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authorGravatar Adam Chlipala <adam@chlipala.net>2015-12-20 14:18:52 -0500
committerGravatar Adam Chlipala <adam@chlipala.net>2015-12-20 14:18:52 -0500
commit68b355524cc20056d8c059138be225aaa9762e0a (patch)
tree6c9a407a965d2cdd5f30815cc3e642a6f9b3d451 /src
parent7bf4f9f063dcdc9fc50ad6ac6143b113535b68f0 (diff)
parent0271786bacdf9c12a142367a479b24ba111ebd17 (diff)
Merge Sqlcache
Diffstat (limited to 'src')
-rw-r--r--src/c/openssl.c2
-rw-r--r--src/c/urweb.c364
-rw-r--r--src/cache.sml17
-rw-r--r--src/cjr_print.sml31
-rw-r--r--src/cjrize.sml8
-rw-r--r--src/compiler.sig8
-rw-r--r--src/compiler.sml22
-rw-r--r--src/iflow.sml124
-rw-r--r--src/jscomp.sml14
-rw-r--r--src/list_key_fn.sml14
-rw-r--r--src/lru_cache.sml203
-rw-r--r--src/main.mlton.sml6
-rw-r--r--src/mono.sml4
-rw-r--r--src/mono_env.sig2
-rw-r--r--src/mono_env.sml2
-rw-r--r--src/mono_fooify.sig39
-rw-r--r--src/mono_fooify.sml346
-rw-r--r--src/mono_inline.sml28
-rw-r--r--src/mono_opt.sml12
-rw-r--r--src/mono_print.sml6
-rw-r--r--src/mono_util.sig4
-rw-r--r--src/mono_util.sml7
-rw-r--r--src/monoize.sig2
-rw-r--r--src/monoize.sml369
-rw-r--r--src/multimap_fn.sml16
-rw-r--r--src/option_key_fn.sml12
-rw-r--r--src/pair_key_fn.sml12
-rw-r--r--src/settings.sig3
-rw-r--r--src/settings.sml7
-rw-r--r--src/sources25
-rw-r--r--src/sql.sig104
-rw-r--r--src/sql.sml200
-rw-r--r--src/sqlcache.sig11
-rw-r--r--src/sqlcache.sml1730
-rw-r--r--src/toy_cache.sml207
-rw-r--r--src/triple_key_fn.sml15
-rw-r--r--src/union_find_fn.sml58
-rw-r--r--src/urweb.lex12
38 files changed, 3536 insertions, 510 deletions
diff --git a/src/c/openssl.c b/src/c/openssl.c
index 206a3bc8..981d48da 100644
--- a/src/c/openssl.c
+++ b/src/c/openssl.c
@@ -79,7 +79,7 @@ void uw_init_crypto() {
if (access(uw_sig_file, F_OK)) {
random_password();
-
+
if ((fd = open(uw_sig_file, O_WRONLY | O_CREAT, 0700)) < 0) {
fprintf(stderr, "Can't open signature file %s\n", uw_sig_file);
perror("open");
diff --git a/src/c/urweb.c b/src/c/urweb.c
index 169152dc..50aac5e8 100644
--- a/src/c/urweb.c
+++ b/src/c/urweb.c
@@ -22,6 +22,8 @@
#include "types.h"
+#include "uthash.h"
+
uw_unit uw_unit_v = 0;
@@ -70,6 +72,9 @@ void uw_buffer_free(uw_buffer *b) {
void uw_buffer_reset(uw_buffer *b) {
b->front = b->start;
+ if (b->front != b->back) {
+ *b->front = 0;
+ }
}
int uw_buffer_check(uw_buffer *b, size_t extra) {
@@ -361,6 +366,9 @@ void uw_global_init() {
uw_global_custom();
uw_init_crypto();
+
+ // Fast non-cryptographic strength randomness for Sqlcache.
+ srandom(clock());
}
void uw_app_init(uw_app *app) {
@@ -419,6 +427,18 @@ typedef struct {
void (*free)(void*);
} global;
+typedef struct uw_Sqlcache_Update {
+ uw_Sqlcache_Cache *cache;
+ char **keys;
+ uw_Sqlcache_Value *value;
+ struct uw_Sqlcache_Update *next;
+} uw_Sqlcache_Update;
+
+typedef struct uw_Sqlcache_Unlock {
+ pthread_rwlock_t *lock;
+ struct uw_Sqlcache_Unlock *next;
+} uw_Sqlcache_Unlock;
+
struct uw_context {
uw_app *app;
int id;
@@ -483,6 +503,13 @@ struct uw_context {
char *output_buffer;
size_t output_buffer_size;
+ // Sqlcache.
+ int numRecording, recordingCapacity;
+ int *recordingOffsets;
+ uw_Sqlcache_Update *cacheUpdate;
+ uw_Sqlcache_Update *cacheUpdateTail;
+ uw_Sqlcache_Unlock *cacheUnlock;
+
int remoteSock;
};
@@ -567,8 +594,16 @@ uw_context uw_init(int id, uw_loggers *lg) {
ctx->output_buffer = malloc(1);
ctx->output_buffer_size = 1;
+ ctx->numRecording = 0;
+ ctx->recordingCapacity = 0;
+ ctx->recordingOffsets = malloc(0);
+ ctx->cacheUpdate = NULL;
+ ctx->cacheUpdateTail = NULL;
+
ctx->remoteSock = -1;
+ ctx->cacheUnlock = NULL;
+
return ctx;
}
@@ -634,6 +669,8 @@ void uw_free(uw_context ctx) {
free(ctx->output_buffer);
+ free(ctx->recordingOffsets);
+
free(ctx);
}
@@ -657,6 +694,7 @@ void uw_reset_keep_error_message(uw_context ctx) {
ctx->usedSig = 0;
ctx->needsResig = 0;
ctx->remoteSock = -1;
+ ctx->numRecording = 0;
}
void uw_reset_keep_request(uw_context ctx) {
@@ -1703,6 +1741,20 @@ void uw_write(uw_context ctx, const char* s) {
*ctx->page.front = 0;
}
+void uw_recordingStart(uw_context ctx) {
+ if (ctx->numRecording == ctx->recordingCapacity) {
+ ++ctx->recordingCapacity;
+ ctx->recordingOffsets = realloc(ctx->recordingOffsets, sizeof(int) * ctx->recordingCapacity);
+ }
+ ctx->recordingOffsets[ctx->numRecording] = ctx->page.front - ctx->page.start;
+ ++ctx->numRecording;
+}
+
+char *uw_recordingRead(uw_context ctx) {
+ char *recording = ctx->page.start + ctx->recordingOffsets[--ctx->numRecording];
+ return strdup(recording);
+}
+
char *uw_Basis_attrifyInt(uw_context ctx, uw_Basis_int n) {
char *result;
int len;
@@ -3633,7 +3685,7 @@ failure_kind uw_initialize(uw_context ctx) {
if (r == 0) {
uw_ensure_transaction(ctx);
ctx->app->initializer(ctx);
- if (ctx->app->db_commit(ctx))
+ if (uw_commit(ctx))
uw_error(ctx, FATAL, "Error running SQL COMMIT");
}
@@ -4506,3 +4558,313 @@ int uw_remoteSock(uw_context ctx) {
void uw_set_remoteSock(uw_context ctx, int sock) {
ctx->remoteSock = sock;
}
+
+
+// Sqlcache
+
+typedef struct uw_Sqlcache_Entry {
+ char *key;
+ uw_Sqlcache_Value *value;
+ unsigned long timeInvalid;
+ UT_hash_handle hh;
+} uw_Sqlcache_Entry;
+
+static void uw_Sqlcache_freeValue(uw_Sqlcache_Value *value) {
+ if (value) {
+ free(value->result);
+ free(value->output);
+ free(value);
+ }
+}
+
+static void uw_Sqlcache_freeEntry(uw_Sqlcache_Entry* entry) {
+ if (entry) {
+ free(entry->key);
+ uw_Sqlcache_freeValue(entry->value);
+ free(entry);
+ }
+}
+
+// TODO: pick a number.
+static unsigned int uw_Sqlcache_maxSize = 1234567890;
+
+static void uw_Sqlcache_delete(uw_Sqlcache_Cache *cache, uw_Sqlcache_Entry *entry) {
+ if (entry) {
+ HASH_DEL(cache->table, entry);
+ uw_Sqlcache_freeEntry(entry);
+ }
+}
+
+static uw_Sqlcache_Entry *uw_Sqlcache_find(uw_Sqlcache_Cache *cache, char *key, size_t len, int bump) {
+ uw_Sqlcache_Entry *entry = NULL;
+ HASH_FIND(hh, cache->table, key, len, entry);
+ if (entry && bump) {
+ // Bump for LRU purposes.
+ HASH_DEL(cache->table, entry);
+ // Important that we use [entry->key], because [key] might be ephemeral.
+ HASH_ADD_KEYPTR(hh, cache->table, entry->key, len, entry);
+ }
+ return entry;
+}
+
+static void uw_Sqlcache_add(uw_Sqlcache_Cache *cache, uw_Sqlcache_Entry *entry, size_t len) {
+ HASH_ADD_KEYPTR(hh, cache->table, entry->key, len, entry);
+ if (HASH_COUNT(cache->table) > uw_Sqlcache_maxSize) {
+ // Deletes the first element of the cache.
+ uw_Sqlcache_delete(cache, cache->table);
+ }
+}
+
+static unsigned long uw_Sqlcache_getTimeNow(uw_Sqlcache_Cache *cache) {
+ // TODO: verify that this makes time comparisons do the Right Thing.
+ return cache->timeNow++;
+}
+
+static unsigned long uw_Sqlcache_timeMax(unsigned long x, unsigned long y) {
+ return x > y ? x : y;
+}
+
+static char uw_Sqlcache_keySep = '_';
+
+static char *uw_Sqlcache_allocKeyBuffer(char **keys, size_t numKeys) {
+ size_t len = 0;
+ while (numKeys-- > 0) {
+ char* k = keys[numKeys];
+ if (!k) {
+ // Can only happen when flushing, in which case we don't need anything past the null key.
+ break;
+ }
+ // Leave room for separator.
+ len += 1 + strlen(k);
+ }
+ char *buf = malloc(len+1);
+ // If nothing is copied into the buffer, it should look like it has length 0.
+ buf[0] = 0;
+ return buf;
+}
+
+static char *uw_Sqlcache_keyCopy(char *buf, char *key) {
+ *buf++ = uw_Sqlcache_keySep;
+ return stpcpy(buf, key);
+}
+
+// The NUL-terminated prefix of [key] below always looks something like "_k1_k2_k3..._kn".
+
+uw_Sqlcache_Value *uw_Sqlcache_check(uw_context ctx, uw_Sqlcache_Cache *cache, char **keys) {
+ int doBump = random() % 1024 == 0;
+ if (doBump) {
+ pthread_rwlock_wrlock(&cache->lockIn);
+ } else {
+ pthread_rwlock_rdlock(&cache->lockIn);
+ }
+ size_t numKeys = cache->numKeys;
+ char *key = uw_Sqlcache_allocKeyBuffer(keys, numKeys);
+ char *buf = key;
+ time_t timeInvalid = cache->timeInvalid;
+ uw_Sqlcache_Entry *entry;
+ if (numKeys == 0) {
+ entry = cache->table;
+ if (!entry) {
+ free(key);
+ pthread_rwlock_unlock(&cache->lockIn);
+ return NULL;
+ }
+ } else {
+ while (numKeys-- > 0) {
+ buf = uw_Sqlcache_keyCopy(buf, keys[numKeys]);
+ size_t len = buf - key;
+ entry = uw_Sqlcache_find(cache, key, len, doBump);
+ if (!entry) {
+ free(key);
+ pthread_rwlock_unlock(&cache->lockIn);
+ return NULL;
+ }
+ timeInvalid = uw_Sqlcache_timeMax(timeInvalid, entry->timeInvalid);
+ }
+ free(key);
+ }
+ uw_Sqlcache_Value *value = entry->value;
+ pthread_rwlock_unlock(&cache->lockIn);
+ // ASK: though the argument isn't trivial, this is safe, right?
+ // Returning outside the lock is safe because updates happen at commit time.
+ // Those are the only times the returned value or its strings can get freed.
+ // Handler output is a new string, so it's safe to free this at commit time.
+ return value && timeInvalid < value->timeValid ? value : NULL;
+}
+
+static void uw_Sqlcache_storeCommitOne(uw_Sqlcache_Cache *cache, char **keys, uw_Sqlcache_Value *value) {
+ pthread_rwlock_wrlock(&cache->lockIn);
+ size_t numKeys = cache->numKeys;
+ time_t timeNow = uw_Sqlcache_getTimeNow(cache);
+ uw_Sqlcache_Entry *entry;
+ if (numKeys == 0) {
+ entry = cache->table;
+ if (!entry) {
+ entry = calloc(1, sizeof(uw_Sqlcache_Entry));
+ entry->key = NULL;
+ entry->value = NULL;
+ entry->timeInvalid = 0;
+ cache->table = entry;
+ }
+ } else {
+ char *key = uw_Sqlcache_allocKeyBuffer(keys, numKeys);
+ char *buf = key;
+ while (numKeys-- > 0) {
+ buf = uw_Sqlcache_keyCopy(buf, keys[numKeys]);
+ size_t len = buf - key;
+
+ entry = uw_Sqlcache_find(cache, key, len, 1);
+ if (!entry) {
+ entry = calloc(1, sizeof(uw_Sqlcache_Entry));
+ entry->key = strdup(key);
+ entry->value = NULL;
+ entry->timeInvalid = 0;
+ uw_Sqlcache_add(cache, entry, len);
+ }
+ }
+ free(key);
+ }
+ if (!entry->value || entry->value->timeValid < value->timeValid) {
+ uw_Sqlcache_freeValue(entry->value);
+ entry->value = value;
+ entry->value->timeValid = timeNow;
+ }
+ pthread_rwlock_unlock(&cache->lockIn);
+}
+
+static void uw_Sqlcache_flushCommitOne(uw_Sqlcache_Cache *cache, char **keys) {
+}
+
+static void uw_Sqlcache_commit(void *data) {
+ uw_context ctx = (uw_context)data;
+ uw_Sqlcache_Update *update = ctx->cacheUpdate;
+ while (update) {
+ uw_Sqlcache_Cache *cache = update->cache;
+ char **keys = update->keys;
+ if (update->value) {
+ uw_Sqlcache_storeCommitOne(cache, keys, update->value);
+ } else {
+ uw_Sqlcache_flushCommitOne(cache, keys);
+ }
+ update = update->next;
+ }
+}
+
+static void uw_Sqlcache_free(void *data, int dontCare) {
+ uw_context ctx = (uw_context)data;
+ uw_Sqlcache_Update *update = ctx->cacheUpdate;
+ while (update) {
+ char** keys = update->keys;
+ size_t numKeys = update->cache->numKeys;
+ while (numKeys-- > 0) {
+ free(keys[numKeys]);
+ }
+ free(keys);
+ // Don't free [update->value]: it's in the cache now!
+ uw_Sqlcache_Update *nextUpdate = update->next;
+ free(update);
+ update = nextUpdate;
+ }
+ ctx->cacheUpdate = NULL;
+ ctx->cacheUpdateTail = NULL;
+ uw_Sqlcache_Unlock *unlock = ctx->cacheUnlock;
+ while (unlock) {
+ pthread_rwlock_unlock(unlock->lock);
+ uw_Sqlcache_Unlock *nextUnlock = unlock->next;
+ free(unlock);
+ unlock = nextUnlock;
+ }
+ ctx->cacheUnlock = NULL;
+}
+
+static void uw_Sqlcache_pushUnlock(uw_context ctx, pthread_rwlock_t *lock) {
+ if (!ctx->cacheUnlock) {
+ // Just need one registered commit for both updating and unlocking.
+ uw_register_transactional(ctx, ctx, uw_Sqlcache_commit, NULL, uw_Sqlcache_free);
+ }
+ uw_Sqlcache_Unlock *unlock = malloc(sizeof(uw_Sqlcache_Unlock));
+ unlock->lock = lock;
+ unlock->next = ctx->cacheUnlock;
+ ctx->cacheUnlock = unlock;
+}
+
+void uw_Sqlcache_rlock(uw_context ctx, uw_Sqlcache_Cache *cache) {
+ pthread_rwlock_rdlock(&cache->lockOut);
+ uw_Sqlcache_pushUnlock(ctx, &cache->lockOut);
+}
+
+void uw_Sqlcache_wlock(uw_context ctx, uw_Sqlcache_Cache *cache) {
+ pthread_rwlock_wrlock(&cache->lockOut);
+ uw_Sqlcache_pushUnlock(ctx, &cache->lockOut);
+}
+
+static char **uw_Sqlcache_copyKeys(char **keys, size_t numKeys) {
+ char **copy = malloc(sizeof(char *) * numKeys);
+ while (numKeys-- > 0) {
+ char *k = keys[numKeys];
+ copy[numKeys] = k ? strdup(k) : NULL;
+ }
+ return copy;
+}
+
+void uw_Sqlcache_store(uw_context ctx, uw_Sqlcache_Cache *cache, char **keys, uw_Sqlcache_Value *value) {
+ uw_Sqlcache_Update *update = malloc(sizeof(uw_Sqlcache_Update));
+ update->cache = cache;
+ update->keys = uw_Sqlcache_copyKeys(keys, cache->numKeys);
+ update->value = value;
+ update->next = NULL;
+ // Can't use [uw_Sqlcache_getTimeNow] because it modifies state and we don't have the lock.
+ pthread_rwlock_rdlock(&cache->lockIn);
+ value->timeValid = cache->timeNow;
+ pthread_rwlock_unlock(&cache->lockIn);
+ if (ctx->cacheUpdateTail) {
+ ctx->cacheUpdateTail->next = update;
+ } else {
+ ctx->cacheUpdate = update;
+ }
+ ctx->cacheUpdateTail = update;
+}
+
+void uw_Sqlcache_flush(uw_context ctx, uw_Sqlcache_Cache *cache, char **keys) {
+ // A flush has to happen immediately so that subsequent stores in the same transaction fail.
+ // This is safe to do because we will always call [uw_Sqlcache_wlock] earlier.
+ // If the transaction fails, the only harm done is a few extra cache misses.
+ pthread_rwlock_wrlock(&cache->lockIn);
+ size_t numKeys = cache->numKeys;
+ if (numKeys == 0) {
+ uw_Sqlcache_Entry *entry = cache->table;
+ if (entry) {
+ uw_Sqlcache_freeValue(entry->value);
+ entry->value = NULL;
+ }
+ } else {
+ char *key = uw_Sqlcache_allocKeyBuffer(keys, numKeys);
+ char *buf = key;
+ time_t timeNow = uw_Sqlcache_getTimeNow(cache);
+ while (numKeys-- > 0) {
+ char *k = keys[numKeys];
+ if (!k) {
+ size_t len = buf - key;
+ if (len == 0) {
+ // The first key was null.
+ cache->timeInvalid = timeNow;
+ } else {
+ uw_Sqlcache_Entry *entry = uw_Sqlcache_find(cache, key, len, 0);
+ if (entry) {
+ entry->timeInvalid = timeNow;
+ }
+ }
+ free(key);
+ pthread_rwlock_unlock(&cache->lockIn);
+ return;
+ }
+ buf = uw_Sqlcache_keyCopy(buf, k);
+ }
+ // All the keys were non-null, so we delete the pointed-to entry.
+ size_t len = buf - key;
+ uw_Sqlcache_Entry *entry = uw_Sqlcache_find(cache, key, len, 0);
+ free(key);
+ uw_Sqlcache_delete(cache, entry);
+ }
+ pthread_rwlock_unlock(&cache->lockIn);
+}
diff --git a/src/cache.sml b/src/cache.sml
new file mode 100644
index 00000000..015c3ff1
--- /dev/null
+++ b/src/cache.sml
@@ -0,0 +1,17 @@
+structure Cache = struct
+
+type cache =
+ {(* Takes a query ID and parameters (and, for store, the value to
+ store) and gives an FFI call that checks, stores, or flushes the
+ relevant entry. The parameters are strings for check and store and
+ optional strings for flush because some parameters might not be
+ fixed. *)
+ check : int * Mono.exp list -> Mono.exp',
+ store : int * Mono.exp list * Mono.exp -> Mono.exp',
+ flush : int * Mono.exp list -> Mono.exp',
+ lock : int * bool (* true = write, false = read *) -> Mono.exp',
+ (* Generates C needed for FFI calls in check, store, and flush. *)
+ setupGlobal : Print.PD.pp_desc,
+ setupQuery : {index : int, params : int} -> Print.PD.pp_desc}
+
+end
diff --git a/src/cjr_print.sml b/src/cjr_print.sml
index 774b95b9..2c2133d6 100644
--- a/src/cjr_print.sml
+++ b/src/cjr_print.sml
@@ -16,7 +16,7 @@
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
@@ -734,7 +734,7 @@ fun unurlify fromClient env (t, loc) =
string (Int.toString (size has_arg)),
string ", ((*request)[0] == '/' ? ++*request : NULL), ",
newline,
-
+
if unboxable then
unurlify' "(*request)" (#1 t)
else
@@ -914,7 +914,7 @@ fun unurlify fromClient env (t, loc) =
space,
string "4, ((*request)[0] == '/' ? ++*request : NULL), ",
newline,
-
+
string "({",
newline,
p_typ env (t, loc),
@@ -1188,7 +1188,7 @@ fun urlify env t =
string "(ctx,",
space,
string "it",
- string (Int.toString level),
+ string (Int.toString level),
string ");",
newline]
else
@@ -1388,7 +1388,7 @@ fun urlify env t =
string (Int.toString level),
string ");",
newline])
-
+
| _ => (ErrorMsg.errorAt loc "Unable to choose a URL encoding function";
space)
in
@@ -1578,7 +1578,7 @@ and p_exp' par tail env (e, loc) =
newline],
string "tmp;",
newline,
- string "})"]
+ string "})"]
end
| ENone _ => string "NULL"
| ESome (t, e) =>
@@ -2078,7 +2078,7 @@ and p_exp' par tail env (e, loc) =
space,
p_exp' false false (E.pushERel
(E.pushERel env "r" (TRecord rnum, loc))
- "acc" state)
+ "acc" state)
body,
string ";",
newline]
@@ -2102,7 +2102,7 @@ and p_exp' par tail env (e, loc) =
newline,
string "uw_ensure_transaction(ctx);",
newline,
-
+
case prepared of
NONE =>
box [string "char *query = ",
@@ -2187,7 +2187,7 @@ and p_exp' par tail env (e, loc) =
string "uw_ensure_transaction(ctx);",
newline,
newline,
-
+
#dmlPrepared (Settings.currentDbms ()) {loc = loc,
id = id,
dml = dml',
@@ -3396,6 +3396,13 @@ fun p_file env (ds, ps) =
newline,
newline,
+ (* For sqlcache. *)
+ let
+ val {setupGlobal, setupQuery, ...} = Sqlcache.getCache ()
+ in
+ box (setupGlobal :: newline :: List.map setupQuery (Sqlcache.getFfiInfo ()))
+ end,
+ newline,
p_list_sep newline (fn x => x) pds,
newline,
@@ -3451,7 +3458,7 @@ fun p_file env (ds, ps) =
makeChecker ("uw_check_envVar", Settings.getEnvVarRules ()),
newline,
-
+
string "extern void uw_sign(const char *in, char *out);",
newline,
string "extern int uw_hash_blocksize;",
@@ -3498,7 +3505,7 @@ fun p_file env (ds, ps) =
newline,
string ("uw_write_header(ctx, \"Last-Modified: " ^ Date.fmt rfcFmt nowD ^ "\\r\\n\");"),
newline,
- string ("uw_write_header(ctx, \"Cache-Control: max-age=31536000, public\\r\\n\");"),
+ string ("uw_write_header(ctx, \"Cache-Control: max-age=31536000, public\\r\\n\");"),
newline,
string "uw_write(ctx, jslib);",
newline,
@@ -3523,7 +3530,7 @@ fun p_file env (ds, ps) =
newline,
string ("uw_write_header(ctx, \"Content-Length: " ^ Int.toString (Word8Vector.length (#Bytes r)) ^ "\\r\\n\");"),
newline,
- string ("uw_write_header(ctx, \"Cache-Control: max-age=31536000, public\\r\\n\");"),
+ string ("uw_write_header(ctx, \"Cache-Control: max-age=31536000, public\\r\\n\");"),
newline,
string "uw_replace_page(ctx, \"",
string (hexify (#Bytes r)),
diff --git a/src/cjrize.sml b/src/cjrize.sml
index 11174162..5f6ae4d8 100644
--- a/src/cjrize.sml
+++ b/src/cjrize.sml
@@ -16,7 +16,7 @@
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
@@ -586,7 +586,7 @@ fun cifyDecl ((d, loc), sm) =
let
val (vis, sm) = ListUtil.foldlMap
(fn ((x, n, t, e, _), sm) =>
- let
+ let
val (t, sm) = cifyTyp (t, sm)
fun unravel (tAll as (t, _), eAll as (e, _)) =
@@ -601,7 +601,7 @@ fun cifyDecl ((d, loc), sm) =
(ErrorMsg.errorAt loc "Function isn't explicit at code generation";
([], tAll, eAll))
| _ => ([], tAll, eAll)
-
+
val (args, ran, e) = unravel (t, e)
val (e, sm) = cifyExp (e, sm)
in
@@ -610,7 +610,7 @@ fun cifyDecl ((d, loc), sm) =
sm vis
in
(SOME (L'.DFunRec vis, loc), NONE, sm)
- end
+ end
| L.DExport (ek, s, n, ts, t, b) =>
let
diff --git a/src/compiler.sig b/src/compiler.sig
index d74ec533..c154240a 100644
--- a/src/compiler.sig
+++ b/src/compiler.sig
@@ -16,7 +16,7 @@
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
@@ -122,6 +122,7 @@ signature COMPILER = sig
val pathcheck : (Mono.file, Mono.file) phase
val sidecheck : (Mono.file, Mono.file) phase
val sigcheck : (Mono.file, Mono.file) phase
+ val sqlcache : (Mono.file, Mono.file) phase
val cjrize : (Mono.file, Cjr.file) phase
val prepare : (Cjr.file, Cjr.file) phase
val checknest : (Cjr.file, Cjr.file) phase
@@ -137,12 +138,12 @@ signature COMPILER = sig
val toCorify : (string, Core.file) transform
val toCore_untangle : (string, Core.file) transform
val toShake1 : (string, Core.file) transform
- val toEspecialize1' : (string, Core.file) transform
+ val toEspecialize1' : (string, Core.file) transform
val toShake1' : (string, Core.file) transform
val toRpcify : (string, Core.file) transform
val toCore_untangle2 : (string, Core.file) transform
val toShake2 : (string, Core.file) transform
- val toEspecialize1 : (string, Core.file) transform
+ val toEspecialize1 : (string, Core.file) transform
val toCore_untangle3 : (string, Core.file) transform
val toShake3 : (string, Core.file) transform
val toTag : (string, Core.file) transform
@@ -187,6 +188,7 @@ signature COMPILER = sig
val toPathcheck : (string, Mono.file) transform
val toSidecheck : (string, Mono.file) transform
val toSigcheck : (string, Mono.file) transform
+ val toSqlcache : (string, Mono.file) transform
val toCjrize : (string, Cjr.file) transform
val toPrepare : (string, Cjr.file) transform
val toChecknest : (string, Cjr.file) transform
diff --git a/src/compiler.sml b/src/compiler.sml
index e2d590b4..bf7491e5 100644
--- a/src/compiler.sml
+++ b/src/compiler.sml
@@ -16,7 +16,7 @@
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
@@ -25,7 +25,7 @@
* POSSIBILITY OF SUCH DAMAGE.
*)
-structure Compiler :> COMPILER = struct
+structure Compiler :> COMPILER = struct
structure UrwebLrVals = UrwebLrValsFn(structure Token = LrParser.Token)
structure Lex = UrwebLexFn(structure Tokens = UrwebLrVals.Tokens)
@@ -268,7 +268,7 @@ val parseUr = {
| _ => absyn
end
handle LrParser.ParseError => [],
- print = SourcePrint.p_file}
+ print = SourcePrint.p_file}
fun p_job ({prefix, database, exe, sql, sources, debug, profile,
timeout, ffi, link, headers, scripts,
@@ -1094,7 +1094,7 @@ val parse = {
ErrorMsg.error ("Rooted module " ^ full ^ " has multiple versions.")
else
();
-
+
makeD true "" pieces
before ignore (foldl (fn (new, path) =>
let
@@ -1449,12 +1449,22 @@ val sigcheck = {
val toSigcheck = transform sigcheck "sigcheck" o toSidecheck
+val sqlcache = {
+ func = (fn file =>
+ if Settings.getSqlcache ()
+ then let val file = MonoInline.inlineFull file in Sqlcache.go file end
+ else file),
+ print = MonoPrint.p_file MonoEnv.empty
+}
+
+val toSqlcache = transform sqlcache "sqlcache" o toSigcheck
+
val cjrize = {
func = Cjrize.cjrize,
print = CjrPrint.p_file CjrEnv.empty
}
-val toCjrize = transform cjrize "cjrize" o toSigcheck
+val toCjrize = transform cjrize "cjrize" o toSqlcache
val prepare = {
func = Prepare.prepare,
@@ -1610,7 +1620,7 @@ fun compile job =
compileC {cname = cname, oname = oname, ename = ename, libs = libs,
profile = #profile job, debug = #debug job, linker = #linker job, link = #link job}
-
+
before cleanup ())
end
handle ex => (((cleanup ()) handle _ => ()); raise ex)
diff --git a/src/iflow.sml b/src/iflow.sml
index 40cf8993..8bde7ea3 100644
--- a/src/iflow.sml
+++ b/src/iflow.sml
@@ -16,7 +16,7 @@
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
@@ -115,36 +115,36 @@ fun p_reln r es =
| PCon1 s => box [string (s ^ "("),
p_list p_exp es,
string ")"]
- | Eq => p_bop "=" es
- | Ne => p_bop "<>" es
- | Lt => p_bop "<" es
- | Le => p_bop "<=" es
- | Gt => p_bop ">" es
- | Ge => p_bop ">=" es
+ | Cmp Eq => p_bop "=" es
+ | Cmp Ne => p_bop "<>" es
+ | Cmp Lt => p_bop "<" es
+ | Cmp Le => p_bop "<=" es
+ | Cmp Gt => p_bop ">" es
+ | Cmp Ge => p_bop ">=" es
fun p_prop p =
case p of
True => string "True"
| False => string "False"
| Unknown => string "??"
- | And (p1, p2) => box [string "(",
- p_prop p1,
- string ")",
- space,
- string "&&",
- space,
- string "(",
- p_prop p2,
- string ")"]
- | Or (p1, p2) => box [string "(",
- p_prop p1,
- string ")",
- space,
- string "||",
- space,
- string "(",
- p_prop p2,
- string ")"]
+ | Lop (And, p1, p2) => box [string "(",
+ p_prop p1,
+ string ")",
+ space,
+ string "&&",
+ space,
+ string "(",
+ p_prop p2,
+ string ")"]
+ | Lop (Or, p1, p2) => box [string "(",
+ p_prop p1,
+ string ")",
+ space,
+ string "||",
+ space,
+ string "(",
+ p_prop p2,
+ string ")"]
| Reln (r, es) => p_reln r es
| Cond (e, p) => box [string "(",
p_exp e,
@@ -518,7 +518,7 @@ fun representative (db : database, e) =
Variety = Nothing,
Known = ref (!(#Known (unNode r))),
Ge = ref NONE})
-
+
val r'' = ref (Node {Id = nodeId (),
Rep = ref NONE,
Cons = #Cons (unNode r),
@@ -529,7 +529,7 @@ fun representative (db : database, e) =
#Rep (unNode r) := SOME r'';
r'
end
- | _ => raise Contradiction
+ | _ => raise Contradiction
end
in
rep e
@@ -687,9 +687,9 @@ fun assert (db, a) =
end
| _ => raise Contradiction
end
- | (Eq, [e1, e2]) =>
+ | (Cmp Eq, [e1, e2]) =>
markEq (representative (db, e1), representative (db, e2))
- | (Ge, [e1, e2]) =>
+ | (Cmp Ge, [e1, e2]) =>
let
val r1 = representative (db, e1)
val r2 = representative (db, e2)
@@ -734,14 +734,14 @@ fun check (db, a) =
(case #Variety (unNode (representative (db, e))) of
Dt1 (f', _) => f' = f
| _ => false)
- | (Eq, [e1, e2]) =>
+ | (Cmp Eq, [e1, e2]) =>
let
val r1 = representative (db, e1)
val r2 = representative (db, e2)
in
repOf r1 = repOf r2
end
- | (Ge, [e1, e2]) =>
+ | (Cmp Ge, [e1, e2]) =>
let
val r1 = representative (db, e1)
val r2 = representative (db, e2)
@@ -848,7 +848,7 @@ fun setHyps (n', hs) =
(hyps := (n', hs, ref false);
Cc.clear db;
app (fn a => Cc.assert (db, a)) hs)
- end
+ end
fun useKeys () =
let
@@ -872,7 +872,7 @@ fun useKeys () =
let
val r =
Cc.check (db,
- AReln (Eq, [Proj (r1, f),
+ AReln (Cmp Eq, [Proj (r1, f),
Proj (r2, f)]))
in
(*Print.prefaces "Fs"
@@ -888,7 +888,7 @@ fun useKeys () =
r
end)) ks then
(changed := true;
- Cc.assert (db, AReln (Eq, [r1, r2]));
+ Cc.assert (db, AReln (Cmp Eq, [r1, r2]));
finder (hyps, acc))
else
finder (hyps, a :: acc)
@@ -1115,7 +1115,7 @@ fun havocCookie cname =
val (_, hs, _) = !hyps
in
hnames := n + 1;
- hyps := (n, List.filter (fn AReln (Eq, [_, Func (Other f, [])]) => f <> cname | _ => true) hs, ref false)
+ hyps := (n, List.filter (fn AReln (Cmp Eq, [_, Func (Other f, [])]) => f <> cname | _ => true) hs, ref false)
end
fun check a = Cc.check (db, a)
@@ -1138,7 +1138,7 @@ fun removeDups (ls : (string * string) list) =
val ls = removeDups ls
in
if List.exists (fn x' => x' = x) ls then
- ls
+ ls
else
x :: ls
end
@@ -1171,7 +1171,7 @@ fun expIn rv env rvOf =
| Null => inl (Func (DtCon0 "None", []))
| SqNot e =>
inr (case expIn e of
- inl e => Reln (Eq, [e, Func (DtCon0 "Basis.bool.False", [])])
+ inl e => Reln (Cmp Eq, [e, Func (DtCon0 "Basis.bool.False", [])])
| inr _ => Unknown)
| Field (v, f) => inl (Proj (rvOf v, f))
| Computed _ => default ()
@@ -1181,15 +1181,15 @@ fun expIn rv env rvOf =
val e2 = expIn e2
in
inr (case (bo, e1, e2) of
- (Exps f, inl e1, inl e2) => f (e1, e2)
- | (Props f, v1, v2) =>
+ (RCmp c, inl e1, inl e2) => Reln (Cmp c, [e1, e2])
+ | (RLop l, v1, v2) =>
let
fun pin v =
case v of
- inl e => Reln (Eq, [e, Func (DtCon0 "Basis.bool.True", [])])
+ inl e => Reln (Cmp Eq, [e, Func (DtCon0 "Basis.bool.True", [])])
| inr p => p
in
- f (pin v1, pin v2)
+ Lop (l, pin v1, pin v2)
end
| _ => Unknown)
end
@@ -1205,7 +1205,7 @@ fun expIn rv env rvOf =
(case expIn e of
inl e => inl (Func (Other f, [e]))
| _ => default ())
-
+
| Unmodeled => inl (Func (Other "allow", [rv ()]))
end
in
@@ -1219,8 +1219,8 @@ fun decomp {Save = save, Restore = restore, Add = add} =
True => (k () handle Cc.Contradiction => ())
| False => ()
| Unknown => ()
- | And (p1, p2) => go p1 (fn () => go p2 k)
- | Or (p1, p2) =>
+ | Lop (And, p1, p2) => go p1 (fn () => go p2 k)
+ | Lop (Or, p1, p2) =>
let
val saved = save ()
in
@@ -1263,7 +1263,7 @@ fun doQuery (arg : 'a doQuery) (e as (_, loc)) =
val new = ref NONE
val old = ref NONE
- val rvs = map (fn (tab, v) =>
+ val rvs = map (fn Table (tab, v) =>
let
val nv = #NextVar arg ()
in
@@ -1272,7 +1272,8 @@ fun doQuery (arg : 'a doQuery) (e as (_, loc)) =
| "Old" => old := SOME (tab, nv)
| _ => ();
(v, nv)
- end) (#From r)
+ end
+ | _ => raise Fail "Iflow: not ready for joins or nesteds") (#From r)
fun rvOf v =
case List.find (fn (v', _) => v' = v) rvs of
@@ -1282,7 +1283,8 @@ fun doQuery (arg : 'a doQuery) (e as (_, loc)) =
val expIn = expIn (#NextVar arg) (#Env arg) rvOf
val saved = #Save arg ()
- fun addFrom () = app (fn (t, v) => #Add arg (AReln (Sql t, [rvOf v]))) (#From r)
+ fun addFrom () = app (fn Table (t, v) => #Add arg (AReln (Sql t, [rvOf v]))
+ | _ => raise Fail "Iflow: not ready for joins or nesteds") (#From r)
fun usedFields e =
case e of
@@ -1351,7 +1353,7 @@ fun doQuery (arg : 'a doQuery) (e as (_, loc)) =
| SOME e =>
let
val p = case expIn e of
- inl e => Reln (Eq, [e, Func (DtCon0 "Basis.bool.True", [])])
+ inl e => Reln (Cmp Eq, [e, Func (DtCon0 "Basis.bool.True", [])])
| inr p => p
val saved = #Save arg ()
@@ -1365,9 +1367,9 @@ fun doQuery (arg : 'a doQuery) (e as (_, loc)) =
fun normal () = doWhere normal'
in
(case #Select r of
- [SqExp (Binop (Exps bo, Count, SqConst (Prim.Int 0)), f)] =>
- (case bo (Const (Prim.Int 1), Const (Prim.Int 2)) of
- Reln (Gt, [Const (Prim.Int 1), Const (Prim.Int 2)]) =>
+ [SqExp (Binop (RCmp bo, Count, SqConst (Prim.Int 0)), f)] =>
+ (case bo of
+ Gt =>
(case #Cont arg of
SomeCol _ => ()
| AllCols k =>
@@ -1469,7 +1471,7 @@ fun evalExp env (e as (_, loc)) k =
evalExp env e (fn e => doArgs (es, e :: acc))
in
doArgs (es, [])
- end
+ end
in
case #1 e of
EPrim p => k (Const p)
@@ -1519,7 +1521,7 @@ fun evalExp env (e as (_, loc)) k =
([], []) => (evalExp env' (#body rf) (fn _ => ());
St.reinstate saved;
default ())
-
+
| (arg :: args, mode :: modes) =>
evalExp env arg (fn arg =>
let
@@ -1663,7 +1665,7 @@ fun evalExp env (e as (_, loc)) k =
Save = St.stash,
Restore = St.reinstate,
Cont = AllCols (fn x =>
- (St.assert [AReln (Eq, [r, x])];
+ (St.assert [AReln (Cmp Eq, [r, x])];
evalExp (acc :: r :: env) b k))} q
end)
| EDml (e, _) =>
@@ -1697,15 +1699,15 @@ fun evalExp env (e as (_, loc)) k =
| Delete (tab, e) =>
let
val old = St.nextVar ()
-
+
val expIn = expIn (Var o St.nextVar) env
(fn "T" => Var old
| _ => raise Fail "Iflow.evalExp: Bad field expression in DELETE")
val p = case expIn e of
- inl e => raise Fail "Iflow.evalExp: DELETE with non-boolean"
+ inl e => raise Fail "Iflow.evalExp: DELETE with non-boolean"
| inr p => p
-
+
val saved = St.stash ()
in
St.assert [AReln (Sql (tab ^ "$Old"), [Var old]),
@@ -1748,7 +1750,7 @@ fun evalExp env (e as (_, loc)) k =
(f, Proj (Var old, f)) :: fs) fs fs'
val p = case expIn e of
- inl e => raise Fail "Iflow.evalExp: UPDATE with non-boolean"
+ inl e => raise Fail "Iflow.evalExp: UPDATE with non-boolean"
| inr p => p
val saved = St.stash ()
in
@@ -1764,7 +1766,7 @@ fun evalExp env (e as (_, loc)) k =
k (Recd []))
handle Cc.Contradiction => ())
end)
-
+
| ENextval (EPrim (Prim.String (_, seq)), _) =>
let
val nv = St.nextVar ()
@@ -1780,7 +1782,7 @@ fun evalExp env (e as (_, loc)) k =
val e = Var (St.nextVar ())
val e' = Func (Other ("cookie/" ^ cname), [])
in
- St.assert [AReln (Known, [e]), AReln (Eq, [e, e'])];
+ St.assert [AReln (Known, [e]), AReln (Cmp Eq, [e, e'])];
k e
end
@@ -2159,7 +2161,7 @@ fun check (file : file) =
end
| _ => ())
end
-
+
| _ => ()
in
app decl (#1 file)
diff --git a/src/jscomp.sml b/src/jscomp.sml
index 9c8effd7..e5a0cb27 100644
--- a/src/jscomp.sml
+++ b/src/jscomp.sml
@@ -16,7 +16,7 @@
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
@@ -195,7 +195,7 @@ fun process (file : file) =
str loc "}"])],
{disc = t, result = s}), loc)
val body = (EAbs ("x", t, s, body), loc)
-
+
val st = {decls = ("jsify", n', (TFun (t, s), loc),
body, "jsify") :: #decls st,
script = #script st,
@@ -575,7 +575,7 @@ fun process (file : file) =
val e = String.translate (fn #"'" => "\\'"
| #"\\" => "\\\\"
| ch => String.str ch) e
-
+
val sc = "urfuncs[" ^ Int.toString n ^ "] = {c:\"t\",f:'"
^ e ^ "'};\n"
in
@@ -801,7 +801,7 @@ fun process (file : file) =
| _ => default ()
in
seek (e', [x])
- end
+ end
| ECase (e', pes, _) =>
let
@@ -1032,7 +1032,7 @@ fun process (file : file) =
| ERel _ => (e, st)
| ENamed _ => (e, st)
| ECon (_, _, NONE) => (e, st)
- | ECon (dk, pc, SOME e) =>
+ | ECon (dk, pc, SOME e) =>
let
val (e, st) = exp outer (e, st)
in
@@ -1084,7 +1084,7 @@ fun process (file : file) =
in
((EBinop (bi, s, e1, e2), loc), st)
end
-
+
| ERecord xets =>
let
val (xets, st) = ListUtil.foldlMap (fn ((x, e, t), st) =>
@@ -1259,7 +1259,7 @@ fun process (file : file) =
in
((ESignalSource e, loc), st)
end
-
+
| EServerCall (e1, t, ef, fm) =>
let
val (e1, st) = exp outer (e1, st)
diff --git a/src/list_key_fn.sml b/src/list_key_fn.sml
new file mode 100644
index 00000000..ec2bd26f
--- /dev/null
+++ b/src/list_key_fn.sml
@@ -0,0 +1,14 @@
+functor ListKeyFn(K : ORD_KEY)
+ : ORD_KEY where type ord_key = K.ord_key list = struct
+
+type ord_key = K.ord_key list
+
+val rec compare =
+ fn ([], []) => EQUAL
+ | ([], _) => LESS
+ | (_, []) => GREATER
+ | (x::xs, y::ys) => case K.compare (x, y) of
+ EQUAL => compare (xs, ys)
+ | ord => ord
+
+end
diff --git a/src/lru_cache.sml b/src/lru_cache.sml
new file mode 100644
index 00000000..81000458
--- /dev/null
+++ b/src/lru_cache.sml
@@ -0,0 +1,203 @@
+structure LruCache : sig
+ val cache : Cache.cache
+end = struct
+
+
+(* Mono *)
+
+open Mono
+
+val dummyLoc = ErrorMsg.dummySpan
+val stringTyp = (TFfi ("Basis", "string"), dummyLoc)
+val optionStringTyp = (TOption stringTyp, dummyLoc)
+fun withTyp typ = map (fn exp => (exp, typ))
+
+fun ffiAppCache' (func, index, argTyps) =
+ EFfiApp ("Sqlcache", func ^ Int.toString index, argTyps)
+
+fun check (index, keys) =
+ ffiAppCache' ("check", index, withTyp stringTyp keys)
+
+fun store (index, keys, value) =
+ ffiAppCache' ("store", index, (value, stringTyp) :: withTyp stringTyp keys)
+
+fun flush (index, keys) =
+ ffiAppCache' ("flush", index, withTyp optionStringTyp keys)
+
+fun lock (index, write) =
+ ffiAppCache' ((if write then "w" else "r") ^ "lock", index, [])
+
+
+(* Cjr *)
+
+open Print
+open Print.PD
+
+fun setupQuery {index, params} =
+ let
+
+ val i = Int.toString index
+
+ fun paramRepeat itemi sep =
+ let
+ fun f n =
+ if n < 0 then ""
+ else if n = 0 then itemi (Int.toString 0)
+ else f (n-1) ^ sep ^ itemi (Int.toString n)
+ in
+ f (params - 1)
+ end
+
+ fun paramRepeatRev itemi sep =
+ let
+ fun f n =
+ if n < 0 then ""
+ else if n = 0 then itemi (Int.toString 0)
+ else itemi (Int.toString n) ^ sep ^ f (n-1)
+ in
+ f (params - 1)
+ end
+
+ fun paramRepeatInit itemi sep =
+ if params = 0 then "" else sep ^ paramRepeat itemi sep
+
+ val typedArgs = paramRepeatInit (fn p => "uw_Basis_string p" ^ p) ", "
+
+ val revArgs = paramRepeatRev (fn p => "p" ^ p) ", "
+
+ val argNums = List.tabulate (params, fn i => "p" ^ Int.toString i)
+ in
+ Print.box
+ [string ("static uw_Sqlcache_Cache cacheStruct" ^ i ^ " = {"),
+ newline,
+ string " .lockIn = PTHREAD_RWLOCK_INITIALIZER,",
+ newline,
+ string " .lockOut = PTHREAD_RWLOCK_INITIALIZER,",
+ newline,
+ string " .table = NULL,",
+ newline,
+ string (" .numKeys = " ^ Int.toString params ^ ","),
+ newline,
+ string " .timeInvalid = 0,",
+ newline,
+ string " .timeNow = 0};",
+ newline,
+ string ("static uw_Sqlcache_Cache *cache" ^ i ^ " = &cacheStruct" ^ i ^ ";"),
+ newline,
+ newline,
+
+ string ("static void uw_Sqlcache_rlock" ^ i ^ "(uw_context ctx) {"),
+ newline,
+ string (" uw_Sqlcache_rlock(ctx, cache" ^ i ^ ");"),
+ newline,
+ string "}",
+ newline,
+ newline,
+
+ string ("static void uw_Sqlcache_wlock" ^ i ^ "(uw_context ctx) {"),
+ newline,
+ string (" uw_Sqlcache_wlock(ctx, cache" ^ i ^ ");"),
+ newline,
+ string "}",
+ newline,
+ newline,
+
+ string ("static uw_Basis_string uw_Sqlcache_check" ^ i),
+ string ("(uw_context ctx" ^ typedArgs ^ ") {"),
+ newline,
+ string (" char *ks[] = {" ^ revArgs ^ "};"),
+ newline,
+ string (" uw_Sqlcache_Value *v = uw_Sqlcache_check(ctx, cache" ^ i ^ ", ks);"),
+ newline,
+ (* If the output is null, it means we had too much recursion, so it's a miss. *)
+ string " if (v && v->output != NULL) {",
+ newline,
+ (*string (" puts(\"SQLCACHE: hit " ^ i ^ ".\");"),
+ newline,*)
+ string " uw_write(ctx, v->output);",
+ newline,
+ string " return v->result;",
+ newline,
+ string " } else {",
+ newline,
+ (*string (" printf(\"SQLCACHE: miss " ^ i ^ " " ^ String.concatWith ", " (List.tabulate (params, fn _ => "%s")) ^ ".\\n\""),
+ (case argNums of
+ [] => Print.box []
+ | _ => Print.box [string ", ",
+ p_list string argNums]),
+ string ");",
+ newline,*)
+ string " uw_recordingStart(ctx);",
+ newline,
+ string " return NULL;",
+ newline,
+ string " }",
+ newline,
+ string "}",
+ newline,
+ newline,
+
+ string ("static uw_unit uw_Sqlcache_store" ^ i),
+ string ("(uw_context ctx, uw_Basis_string s" ^ typedArgs ^ ") {"),
+ newline,
+ string (" char *ks[] = {" ^ revArgs ^ "};"),
+ newline,
+ string (" uw_Sqlcache_Value *v = malloc(sizeof(uw_Sqlcache_Value));"),
+ newline,
+ string " v->result = strdup(s);",
+ newline,
+ string " v->output = uw_recordingRead(ctx);",
+ newline,
+ (*string (" puts(\"SQLCACHE: stored " ^ i ^ ".\");"),
+ newline,*)
+ string (" uw_Sqlcache_store(ctx, cache" ^ i ^ ", ks, v);"),
+ newline,
+ string " return uw_unit_v;",
+ newline,
+ string "}",
+ newline,
+ newline,
+
+ string ("static uw_unit uw_Sqlcache_flush" ^ i),
+ string ("(uw_context ctx" ^ typedArgs ^ ") {"),
+ newline,
+ string (" char *ks[] = {" ^ revArgs ^ "};"),
+ newline,
+ string (" uw_Sqlcache_flush(ctx, cache" ^ i ^ ", ks);"),
+ newline,
+ (*string (" puts(\"SQLCACHE: flushed " ^ i ^ ".\");"),
+ newline,*)
+ string " return uw_unit_v;",
+ newline,
+ string "}",
+ newline,
+ newline]
+ end
+
+val setupGlobal = string "/* No global setup for LRU cache. */"
+
+
+(* Bundled up. *)
+
+(* For now, use the toy implementation if there are no arguments. *)
+fun toyIfNoKeys numKeys implLru implToy args =
+ if numKeys args = 0
+ then implToy args
+ else implLru args
+
+val cache =
+ (* let *)
+ (* val {check = toyCheck, *)
+ (* store = toyStore, *)
+ (* flush = toyFlush, *)
+ (* setupQuery = toySetupQuery, *)
+ (* ...} = ToyCache.cache *)
+ (* in *)
+ (* {check = toyIfNoKeys (length o #2) check toyCheck, *)
+ (* store = toyIfNoKeys (length o #2) store toyStore, *)
+ (* flush = toyIfNoKeys (length o #2) flush toyFlush, *)
+ {check = check, store = store, flush = flush, lock = lock,
+ setupQuery = setupQuery, setupGlobal = setupGlobal}
+ (* end *)
+
+end
diff --git a/src/main.mlton.sml b/src/main.mlton.sml
index 7197babf..67732b58 100644
--- a/src/main.mlton.sml
+++ b/src/main.mlton.sml
@@ -159,6 +159,12 @@ fun oneRun args =
| "-iflow" :: rest =>
(Compiler.doIflow := true;
doArgs rest)
+ | "-sqlcache" :: rest =>
+ (Settings.setSqlcache true;
+ doArgs rest)
+ | "-heuristic" :: h :: rest =>
+ (Sqlcache.setHeuristic h;
+ doArgs rest)
| "-moduleOf" :: fname :: _ =>
(print (Compiler.moduleOf fname ^ "\n");
raise Code OS.Process.success)
diff --git a/src/mono.sml b/src/mono.sml
index 1e402e57..b05c3dcc 100644
--- a/src/mono.sml
+++ b/src/mono.sml
@@ -16,7 +16,7 @@
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
@@ -119,7 +119,7 @@ datatype exp' =
| ESignalReturn of exp
| ESignalBind of exp * exp
| ESignalSource of exp
-
+
| EServerCall of exp * typ * effect * failure_mode
| ERecv of exp * typ
| ESleep of exp
diff --git a/src/mono_env.sig b/src/mono_env.sig
index 97d7d9ea..db6fdc95 100644
--- a/src/mono_env.sig
+++ b/src/mono_env.sig
@@ -16,7 +16,7 @@
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
diff --git a/src/mono_env.sml b/src/mono_env.sml
index 7f9a6e62..52e07893 100644
--- a/src/mono_env.sml
+++ b/src/mono_env.sml
@@ -16,7 +16,7 @@
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
diff --git a/src/mono_fooify.sig b/src/mono_fooify.sig
new file mode 100644
index 00000000..0cc72342
--- /dev/null
+++ b/src/mono_fooify.sig
@@ -0,0 +1,39 @@
+signature MONO_FOOIFY = sig
+
+(* TODO: don't expose raw references if possible. *)
+val nextPvar : int ref
+val pvarDefs : ((string * int * (string * int * Mono.typ option) list) list) ref
+
+datatype foo_kind = Attr | Url
+
+structure Fm : sig
+ type t
+
+ type vr = string * int * Mono.typ * Mono.exp * string
+
+ val empty : int -> t
+
+ val lookup : t -> foo_kind -> int -> (int -> t -> vr * t) -> t * int
+ val lookupList : t -> foo_kind -> Mono.typ -> (int -> t -> vr * t) -> t * int
+ val enter : t -> t
+ (* This list should be reversed before adding to list of file declarations. *)
+ val decls : t -> Mono.decl list
+
+ val freshName : t -> int * t
+end
+
+(* General form used in [Monoize]. *)
+val fooifyExp : foo_kind
+ -> (int -> Mono.typ * string)
+ -> (int -> string * (string * int * Mono.typ option) list)
+ -> Fm.t
+ -> Mono.exp * Mono.typ
+ -> Mono.exp * Fm.t
+
+(* Easy-to-use interface in [Sqlcache]. Uses [Fm.canonical]. *)
+val canonicalFm : Fm.t ref (* Set at the end of [Monoize]. *)
+val urlify : MonoEnv.env -> Mono.exp * Mono.typ -> Mono.exp option
+(* This list should be reversed before adding to list of file declarations. *)
+val getNewFmDecls : unit -> Mono.decl list
+
+end
diff --git a/src/mono_fooify.sml b/src/mono_fooify.sml
new file mode 100644
index 00000000..e64207cd
--- /dev/null
+++ b/src/mono_fooify.sml
@@ -0,0 +1,346 @@
+structure MonoFooify :> MONO_FOOIFY = struct
+
+open Mono
+
+datatype foo_kind =
+ Attr
+ | Url
+
+val nextPvar = ref 0
+val pvarDefs = ref ([] : (string * int * (string * int * typ option) list) list)
+
+structure Fm = struct
+
+type vr = string * int * typ * exp * string
+
+structure IM = IntBinaryMap
+
+structure M = BinaryMapFn(struct
+ type ord_key = foo_kind
+ fun compare x =
+ case x of
+ (Attr, Attr) => EQUAL
+ | (Attr, _) => LESS
+ | (_, Attr) => GREATER
+
+ | (Url, Url) => EQUAL
+ end)
+
+structure TM = BinaryMapFn(struct
+ type ord_key = typ
+ val compare = MonoUtil.Typ.compare
+ end)
+
+type t = {
+ count : int,
+ map : int IM.map M.map,
+ listMap : int TM.map M.map,
+ decls : vr list
+}
+
+fun empty count = {
+ count = count,
+ map = M.empty,
+ listMap = M.empty,
+ decls = []
+}
+
+fun chooseNext count =
+ let
+ val n = !nextPvar
+ in
+ if count < n then
+ (count, count+1)
+ else
+ (nextPvar := n + 1;
+ (n, n+1))
+ end
+
+fun enter ({count, map, listMap, ...} : t) = {count = count, map = map, listMap = listMap, decls = []}
+fun freshName {count, map, listMap, decls} =
+ let
+ val (next, count) = chooseNext count
+ in
+ (next, {count = count , map = map, listMap = listMap, decls = decls})
+ end
+fun decls ({decls, ...} : t) =
+ case decls of
+ [] => []
+ | _ => [(DValRec decls, ErrorMsg.dummySpan)]
+
+fun lookup (t as {count, map, listMap, decls}) k n thunk =
+ let
+ val im = Option.getOpt (M.find (map, k), IM.empty)
+ in
+ case IM.find (im, n) of
+ NONE =>
+ let
+ val n' = count
+ val (d, {count, map, listMap, decls}) =
+ thunk count {count = count + 1,
+ map = M.insert (map, k, IM.insert (im, n, n')),
+ listMap = listMap,
+ decls = decls}
+ in
+ ({count = count,
+ map = map,
+ listMap = listMap,
+ decls = d :: decls}, n')
+ end
+ | SOME n' => (t, n')
+ end
+
+fun lookupList (t as {count, map, listMap, decls}) k tp thunk =
+ let
+ val tm = Option.getOpt (M.find (listMap, k), TM.empty)
+ in
+ case TM.find (tm, tp) of
+ NONE =>
+ let
+ val n' = count
+ val (d, {count, map, listMap, decls}) =
+ thunk count {count = count + 1,
+ map = map,
+ listMap = M.insert (listMap, k, TM.insert (tm, tp, n')),
+ decls = decls}
+ in
+ ({count = count,
+ map = map,
+ listMap = listMap,
+ decls = d :: decls}, n')
+ end
+ | SOME n' => (t, n')
+ end
+
+end
+
+fun fk2s fk =
+ case fk of
+ Attr => "attr"
+ | Url => "url"
+
+fun capitalize s =
+ if s = "" then
+ s
+ else
+ str (Char.toUpper (String.sub (s, 0))) ^ String.extract (s, 1, NONE)
+
+structure E = ErrorMsg
+
+exception TypeMismatch of Fm.t * E.span
+exception CantPass of Fm.t * typ
+exception DontKnow of Fm.t * typ
+
+val dummyExp = (EPrim (Prim.Int 0), E.dummySpan)
+
+fun fooifyExpWithExceptions fk lookupENamed lookupDatatype =
+ let
+ fun fooify fm (e, tAll as (t, loc)) =
+ case #1 e of
+ EClosure (fnam, [(ERecord [], _)]) =>
+ let
+ val (_, s) = lookupENamed fnam
+ in
+ ((EPrim (Prim.String (Prim.Normal, Settings.getUrlPrefix () ^ s)), loc), fm)
+ end
+ | EClosure (fnam, args) =>
+ let
+ val (ft, s) = lookupENamed fnam
+ fun attrify (args, ft, e, fm) =
+ case (args, ft) of
+ ([], _) => (e, fm)
+ | (arg :: args, (TFun (t, ft), _)) =>
+ let
+ val (arg', fm) = fooify fm (arg, t)
+ in
+ attrify (args, ft,
+ (EStrcat (e,
+ (EStrcat ((EPrim (Prim.String (Prim.Normal, "/")), loc),
+ arg'), loc)), loc),
+ fm)
+ end
+ | _ => raise TypeMismatch (fm, loc)
+ in
+ attrify (args, ft, (EPrim (Prim.String (Prim.Normal, Settings.getUrlPrefix () ^ s)), loc), fm)
+ end
+ | _ =>
+ case t of
+ TFfi ("Basis", "unit") => ((EPrim (Prim.String (Prim.Normal, "")), loc), fm)
+ | TFfi (m, x) => (if Settings.mayClientToServer (m, x)
+ then ((EFfiApp (m, fk2s fk ^ "ify" ^ capitalize x, [(e, tAll)]), loc), fm)
+ else raise CantPass (fm, tAll))
+
+ | TRecord [] => ((EPrim (Prim.String (Prim.Normal, "")), loc), fm)
+ | TRecord ((x, t) :: xts) =>
+ let
+ val (se, fm) = fooify fm ((EField (e, x), loc), t)
+ in
+ foldl (fn ((x, t), (se, fm)) =>
+ let
+ val (se', fm) = fooify fm ((EField (e, x), loc), t)
+ in
+ ((EStrcat (se,
+ (EStrcat ((EPrim (Prim.String (Prim.Normal, "/")), loc),
+ se'), loc)), loc),
+ fm)
+ end) (se, fm) xts
+ end
+
+ | TDatatype (i, ref (dk, _)) =>
+ let
+ fun makeDecl n fm =
+ let
+ val (x, xncs) =
+ case ListUtil.search (fn (x, i', xncs) =>
+ if i' = i then
+ SOME (x, xncs)
+ else
+ NONE) (!pvarDefs) of
+ NONE => lookupDatatype i
+ | SOME v => v
+
+ val (branches, fm) =
+ ListUtil.foldlMap
+ (fn ((x, n, to), fm) =>
+ case to of
+ NONE =>
+ (((PCon (dk, PConVar n, NONE), loc),
+ (EPrim (Prim.String (Prim.Normal, x)), loc)),
+ fm)
+ | SOME t =>
+ let
+ val (arg, fm) = fooify fm ((ERel 0, loc), t)
+ in
+ (((PCon (dk, PConVar n, SOME (PVar ("a", t), loc)), loc),
+ (EStrcat ((EPrim (Prim.String (Prim.Normal, x ^ "/")), loc),
+ arg), loc)),
+ fm)
+ end)
+ fm xncs
+
+ val dom = tAll
+ val ran = (TFfi ("Basis", "string"), loc)
+ in
+ ((fk2s fk ^ "ify_" ^ x,
+ n,
+ (TFun (dom, ran), loc),
+ (EAbs ("x",
+ dom,
+ ran,
+ (ECase ((ERel 0, loc),
+ branches,
+ {disc = dom,
+ result = ran}), loc)), loc),
+ ""),
+ fm)
+ end
+
+ val (fm, n) = Fm.lookup fm fk i makeDecl
+ in
+ ((EApp ((ENamed n, loc), e), loc), fm)
+ end
+
+ | TOption t =>
+ let
+ val (body, fm) = fooify fm ((ERel 0, loc), t)
+ in
+ ((ECase (e,
+ [((PNone t, loc),
+ (EPrim (Prim.String (Prim.Normal, "None")), loc)),
+
+ ((PSome (t, (PVar ("x", t), loc)), loc),
+ (EStrcat ((EPrim (Prim.String (Prim.Normal, "Some/")), loc),
+ body), loc))],
+ {disc = tAll,
+ result = (TFfi ("Basis", "string"), loc)}), loc),
+ fm)
+ end
+
+ | TList t =>
+ let
+ fun makeDecl n fm =
+ let
+ val rt = (TRecord [("1", t), ("2", (TList t, loc))], loc)
+ val (arg, fm) = fooify fm ((ERel 0, loc), rt)
+
+ val branches = [((PNone rt, loc),
+ (EPrim (Prim.String (Prim.Normal, "Nil")), loc)),
+ ((PSome (rt, (PVar ("a", rt), loc)), loc),
+ (EStrcat ((EPrim (Prim.String (Prim.Normal, "Cons/")), loc),
+ arg), loc))]
+
+ val dom = tAll
+ val ran = (TFfi ("Basis", "string"), loc)
+ in
+ ((fk2s fk ^ "ify_list",
+ n,
+ (TFun (dom, ran), loc),
+ (EAbs ("x",
+ dom,
+ ran,
+ (ECase ((ERel 0, loc),
+ branches,
+ {disc = dom,
+ result = ran}), loc)), loc),
+ ""),
+ fm)
+ end
+
+ val (fm, n) = Fm.lookupList fm fk t makeDecl
+ in
+ ((EApp ((ENamed n, loc), e), loc), fm)
+ end
+
+ | _ => raise DontKnow (fm, tAll)
+ in
+ fooify
+ end
+
+fun fooifyExp fk lookupENamed lookupDatatype fm exp =
+ fooifyExpWithExceptions fk lookupENamed lookupDatatype fm exp
+ handle TypeMismatch (fm, loc) =>
+ (E.errorAt loc "Type mismatch encoding attribute";
+ (dummyExp, fm))
+ | CantPass (fm, typ as (_, loc)) =>
+ (E.errorAt loc "MonoFooify: can't pass type from client to server";
+ Print.eprefaces' [("Type", MonoPrint.p_typ MonoEnv.empty typ)];
+ (dummyExp, fm))
+ | DontKnow (fm, typ as (_, loc)) =>
+ (E.errorAt loc "Don't know how to encode attribute/URL type";
+ Print.eprefaces' [("Type", MonoPrint.p_typ MonoEnv.empty typ)];
+ (dummyExp, fm))
+
+(* Has to be set at the end of [Monoize]. *)
+val canonicalFm = ref (Fm.empty 0 : Fm.t)
+
+fun urlify env expTyp =
+ let
+ val (exp, fm) =
+ fooifyExpWithExceptions
+ Url
+ (fn n =>
+ let
+ val (_, t, _, s) = MonoEnv.lookupENamed env n
+ in
+ (t, s)
+ end)
+ (fn n => MonoEnv.lookupDatatype env n)
+ (!canonicalFm)
+ expTyp
+ in
+ canonicalFm := fm;
+ SOME exp
+ end
+ handle TypeMismatch _ => NONE
+ | CantPass _ => NONE
+ | DontKnow _ => NONE
+
+fun getNewFmDecls () =
+ let
+ val fm = !canonicalFm
+ in
+ canonicalFm := Fm.enter fm;
+ Fm.decls fm
+ end
+
+end
diff --git a/src/mono_inline.sml b/src/mono_inline.sml
new file mode 100644
index 00000000..d23419f3
--- /dev/null
+++ b/src/mono_inline.sml
@@ -0,0 +1,28 @@
+structure MonoInline = struct
+
+fun inlineFull file =
+ let
+ val oldInline = Settings.getMonoInline ()
+ val oldFull = !MonoReduce.fullMode
+ in
+ (Settings.setMonoInline (case Int.maxInt of
+ NONE => 1000000
+ | SOME n => n);
+ MonoReduce.fullMode := true;
+ let
+ val file = MonoReduce.reduce file
+ val file = MonoOpt.optimize file
+ val file = Fuse.fuse file
+ val file = MonoOpt.optimize file
+ val file = MonoShake.shake file
+ in
+ file
+ end before
+ (MonoReduce.fullMode := oldFull;
+ Settings.setMonoInline oldInline))
+ handle ex => (Settings.setMonoInline oldInline;
+ MonoReduce.fullMode := oldFull;
+ raise ex)
+ end
+
+end
diff --git a/src/mono_opt.sml b/src/mono_opt.sml
index 04ef7f50..186f6c62 100644
--- a/src/mono_opt.sml
+++ b/src/mono_opt.sml
@@ -16,7 +16,7 @@
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
@@ -169,7 +169,7 @@ fun exp e =
| EStrcat (e1, (EPrim (Prim.String (_, "")), _)) => #1 e1
| EStrcat ((EPrim (Prim.String (_, "")), _), e2) => #1 e2
-
+
| EStrcat ((EPrim (Prim.String (Prim.Html, s1)), loc), (EPrim (Prim.String (Prim.Html, s2)), _)) =>
let
val s =
@@ -182,7 +182,7 @@ fun exp e =
in
EPrim (Prim.String (Prim.Html, s))
end
-
+
| EStrcat ((EPrim (Prim.String (_, s1)), loc), (EPrim (Prim.String (_, s2)), _)) =>
EPrim (Prim.String (Prim.Normal, s1 ^ s2))
@@ -540,7 +540,7 @@ fun exp e =
else
ENone (TFfi ("Basis", "string"), loc))
- | EFfiApp ("Basis", "checkString", [((EPrim (Prim.String (_, s)), loc), _)]) =>
+ | EFfiApp ("Basis", "checkString", [((EPrim (Prim.String (_, s)), loc), _)]) =>
let
fun uwify (cs, acc) =
case cs of
@@ -568,7 +568,7 @@ fun exp e =
EPrim (Prim.String (Prim.Normal, s))
end
- | EFfiApp ("Basis", "viewify", [((EPrim (Prim.String (_, s)), loc), _)]) =>
+ | EFfiApp ("Basis", "viewify", [((EPrim (Prim.String (_, s)), loc), _)]) =>
let
fun uwify (cs, acc) =
case cs of
@@ -593,7 +593,7 @@ fun exp e =
EPrim (Prim.String (Prim.Normal, s))
end
- | EFfiApp ("Basis", "unAs", [((EPrim (Prim.String (_, s)), _), _)]) =>
+ | EFfiApp ("Basis", "unAs", [((EPrim (Prim.String (_, s)), _), _)]) =>
EPrim (Prim.String (Prim.Normal, unAs s))
| EFfiApp ("Basis", "unAs", [(e', _)]) =>
let
diff --git a/src/mono_print.sml b/src/mono_print.sml
index c81b362a..3e498d2c 100644
--- a/src/mono_print.sml
+++ b/src/mono_print.sml
@@ -16,7 +16,7 @@
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
@@ -391,7 +391,7 @@ fun p_vali env (x, n, t, e, s) =
string "__",
string (Int.toString n)]
else
- string x
+ string x
in
box [xp,
space,
@@ -541,7 +541,7 @@ fun p_decl env (dAll as (d, _) : decl) =
space,
p_policy env p]
| DOnError _ => string "ONERROR"
-
+
fun p_file env (file, _) =
let
val (pds, _) = ListUtil.foldlMap (fn (d, env) =>
diff --git a/src/mono_util.sig b/src/mono_util.sig
index da8b2e20..5c078a77 100644
--- a/src/mono_util.sig
+++ b/src/mono_util.sig
@@ -16,7 +16,7 @@
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
@@ -68,7 +68,7 @@ structure Exp : sig
val fold : {typ : Mono.typ' * 'state -> 'state,
exp : Mono.exp' * 'state -> 'state}
-> 'state -> Mono.exp -> 'state
-
+
val exists : {typ : Mono.typ' -> bool,
exp : Mono.exp' -> bool} -> Mono.exp -> bool
diff --git a/src/mono_util.sml b/src/mono_util.sml
index cc531625..5d7eb164 100644
--- a/src/mono_util.sml
+++ b/src/mono_util.sml
@@ -16,7 +16,7 @@
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
@@ -281,7 +281,7 @@ fun mapfoldB {typ = fc, exp = fe, bind} =
S.map2 (mft t,
fn t' =>
(ERedirect (e', t'), loc)))
-
+
| EStrcat (e1, e2) =>
S.bind2 (mfe ctx e1,
fn e1' =>
@@ -334,6 +334,7 @@ fun mapfoldB {typ = fc, exp = fe, bind} =
RelE ("acc", dummyt)))
body,
fn body' =>
+ (* ASK: is this the right thing to do? *)
S.map2 (mfe ctx initial,
fn initial' =>
(EQuery {exps = exps',
@@ -624,7 +625,7 @@ fun mapfoldB {typ = fc, exp = fe, decl = fd, bind} =
(x, n, t', e', s)))
in
mfd
- end
+ end
fun mapfold {typ = fc, exp = fe, decl = fd} =
mapfoldB {typ = fc,
diff --git a/src/monoize.sig b/src/monoize.sig
index 838d7c4c..951db01b 100644
--- a/src/monoize.sig
+++ b/src/monoize.sig
@@ -16,7 +16,7 @@
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
diff --git a/src/monoize.sml b/src/monoize.sml
index dd2c41c5..75851a48 100644
--- a/src/monoize.sml
+++ b/src/monoize.sml
@@ -50,9 +50,9 @@ structure RM = BinaryMapFn(struct
(L'.TRecord r2, E.dummySpan))
end)
-val nextPvar = ref 0
+val nextPvar = MonoFooify.nextPvar
val pvars = ref (RM.empty : (int * (string * int * L'.typ) list) RM.map)
-val pvarDefs = ref ([] : (string * int * (string * int * L'.typ option) list) list)
+val pvarDefs = MonoFooify.pvarDefs
val pvarOldDefs = ref ([] : (int * (string * int * L.con option) list) list)
fun choosePvar () =
@@ -374,311 +374,26 @@ fun monoType env =
val dummyExp = (L'.EPrim (Prim.Int 0), E.dummySpan)
-structure IM = IntBinaryMap
-
-datatype foo_kind =
- Attr
- | Url
-
-fun fk2s fk =
- case fk of
- Attr => "attr"
- | Url => "url"
-
-type vr = string * int * L'.typ * L'.exp * string
-
-structure Fm :> sig
- type t
-
- val empty : int -> t
-
- val lookup : t -> foo_kind -> int -> (int -> t -> vr * t) -> t * int
- val lookupList : t -> foo_kind -> L'.typ -> (int -> t -> vr * t) -> t * int
- val enter : t -> t
- val decls : t -> L'.decl list
-
- val freshName : t -> int * t
-end = struct
-
-structure M = BinaryMapFn(struct
- type ord_key = foo_kind
- fun compare x =
- case x of
- (Attr, Attr) => EQUAL
- | (Attr, _) => LESS
- | (_, Attr) => GREATER
-
- | (Url, Url) => EQUAL
- end)
-
-structure TM = BinaryMapFn(struct
- type ord_key = L'.typ
- val compare = MonoUtil.Typ.compare
- end)
-
-type t = {
- count : int,
- map : int IM.map M.map,
- listMap : int TM.map M.map,
- decls : vr list
-}
-
-fun empty count = {
- count = count,
- map = M.empty,
- listMap = M.empty,
- decls = []
-}
-
-fun chooseNext count =
- let
- val n = !nextPvar
- in
- if count < n then
- (count, count+1)
- else
- (nextPvar := n + 1;
- (n, n+1))
- end
-
-fun enter ({count, map, listMap, ...} : t) = {count = count, map = map, listMap = listMap, decls = []}
-fun freshName {count, map, listMap, decls} =
- let
- val (next, count) = chooseNext count
- in
- (next, {count = count , map = map, listMap = listMap, decls = decls})
- end
-fun decls ({decls, ...} : t) =
- case decls of
- [] => []
- | _ => [(L'.DValRec decls, ErrorMsg.dummySpan)]
-
-fun lookup (t as {count, map, listMap, decls}) k n thunk =
- let
- val im = Option.getOpt (M.find (map, k), IM.empty)
- in
- case IM.find (im, n) of
- NONE =>
- let
- val n' = count
- val (d, {count, map, listMap, decls}) =
- thunk count {count = count + 1,
- map = M.insert (map, k, IM.insert (im, n, n')),
- listMap = listMap,
- decls = decls}
- in
- ({count = count,
- map = map,
- listMap = listMap,
- decls = d :: decls}, n')
- end
- | SOME n' => (t, n')
- end
-
-fun lookupList (t as {count, map, listMap, decls}) k tp thunk =
- let
- val tm = Option.getOpt (M.find (listMap, k), TM.empty)
- in
- case TM.find (tm, tp) of
- NONE =>
- let
- val n' = count
- val (d, {count, map, listMap, decls}) =
- thunk count {count = count + 1,
- map = map,
- listMap = M.insert (listMap, k, TM.insert (tm, tp, n')),
- decls = decls}
- in
- ({count = count,
- map = map,
- listMap = listMap,
- decls = d :: decls}, n')
- end
- | SOME n' => (t, n')
- end
-
-end
-
-
-fun capitalize s =
- if s = "" then
- s
- else
- str (Char.toUpper (String.sub (s, 0))) ^ String.extract (s, 1, NONE)
+structure Fm = MonoFooify.Fm
fun fooifyExp fk env =
- let
- fun fooify fm (e, tAll as (t, loc)) =
- case #1 e of
- L'.EClosure (fnam, [(L'.ERecord [], _)]) =>
- let
- val (_, _, _, s) = Env.lookupENamed env fnam
- in
- ((L'.EPrim (Prim.String (Prim.Normal, Settings.getUrlPrefix () ^ s)), loc), fm)
- end
- | L'.EClosure (fnam, args) =>
- let
- val (_, ft, _, s) = Env.lookupENamed env fnam
- val ft = monoType env ft
-
- fun attrify (args, ft, e, fm) =
- case (args, ft) of
- ([], _) => (e, fm)
- | (arg :: args, (L'.TFun (t, ft), _)) =>
- let
- val (arg', fm) = fooify fm (arg, t)
- in
- attrify (args, ft,
- (L'.EStrcat (e,
- (L'.EStrcat ((L'.EPrim (Prim.String (Prim.Normal, "/")), loc),
- arg'), loc)), loc),
- fm)
- end
- | _ => (E.errorAt loc "Type mismatch encoding attribute";
- (e, fm))
- in
- attrify (args, ft, (L'.EPrim (Prim.String (Prim.Normal, Settings.getUrlPrefix () ^ s)), loc), fm)
- end
- | _ =>
- case t of
- L'.TFfi ("Basis", "unit") => ((L'.EPrim (Prim.String (Prim.Normal, "")), loc), fm)
- | L'.TFfi (m, x) => ((L'.EFfiApp (m, fk2s fk ^ "ify" ^ capitalize x, [(e, tAll)]), loc), fm)
-
- | L'.TRecord [] => ((L'.EPrim (Prim.String (Prim.Normal, "")), loc), fm)
- | L'.TRecord ((x, t) :: xts) =>
- let
- val (se, fm) = fooify fm ((L'.EField (e, x), loc), t)
- in
- foldl (fn ((x, t), (se, fm)) =>
- let
- val (se', fm) = fooify fm ((L'.EField (e, x), loc), t)
- in
- ((L'.EStrcat (se,
- (L'.EStrcat ((L'.EPrim (Prim.String (Prim.Normal, "/")), loc),
- se'), loc)), loc),
- fm)
- end) (se, fm) xts
- end
-
- | L'.TDatatype (i, ref (dk, _)) =>
- let
- fun makeDecl n fm =
- let
- val (x, xncs) =
- case ListUtil.search (fn (x, i', xncs) =>
- if i' = i then
- SOME (x, xncs)
- else
- NONE) (!pvarDefs) of
- NONE =>
- let
- val (x, _, xncs) = Env.lookupDatatype env i
- in
- (x, map (fn (x, n, c) => (x, n, Option.map (monoType env) c)) xncs)
- end
- | SOME v => v
-
- val (branches, fm) =
- ListUtil.foldlMap
- (fn ((x, n, to), fm) =>
- case to of
- NONE =>
- (((L'.PCon (dk, L'.PConVar n, NONE), loc),
- (L'.EPrim (Prim.String (Prim.Normal, x)), loc)),
- fm)
- | SOME t =>
- let
- val (arg, fm) = fooify fm ((L'.ERel 0, loc), t)
- in
- (((L'.PCon (dk, L'.PConVar n, SOME (L'.PVar ("a", t), loc)), loc),
- (L'.EStrcat ((L'.EPrim (Prim.String (Prim.Normal, x ^ "/")), loc),
- arg), loc)),
- fm)
- end)
- fm xncs
-
- val dom = tAll
- val ran = (L'.TFfi ("Basis", "string"), loc)
- in
- ((fk2s fk ^ "ify_" ^ x,
- n,
- (L'.TFun (dom, ran), loc),
- (L'.EAbs ("x",
- dom,
- ran,
- (L'.ECase ((L'.ERel 0, loc),
- branches,
- {disc = dom,
- result = ran}), loc)), loc),
- ""),
- fm)
- end
-
- val (fm, n) = Fm.lookup fm fk i makeDecl
- in
- ((L'.EApp ((L'.ENamed n, loc), e), loc), fm)
- end
-
- | L'.TOption t =>
- let
- val (body, fm) = fooify fm ((L'.ERel 0, loc), t)
- in
- ((L'.ECase (e,
- [((L'.PNone t, loc),
- (L'.EPrim (Prim.String (Prim.Normal, "None")), loc)),
-
- ((L'.PSome (t, (L'.PVar ("x", t), loc)), loc),
- (L'.EStrcat ((L'.EPrim (Prim.String (Prim.Normal, "Some/")), loc),
- body), loc))],
- {disc = tAll,
- result = (L'.TFfi ("Basis", "string"), loc)}), loc),
- fm)
- end
-
- | L'.TList t =>
- let
- fun makeDecl n fm =
- let
- val rt = (L'.TRecord [("1", t), ("2", (L'.TList t, loc))], loc)
- val (arg, fm) = fooify fm ((L'.ERel 0, loc), rt)
-
- val branches = [((L'.PNone rt, loc),
- (L'.EPrim (Prim.String (Prim.Normal, "Nil")), loc)),
- ((L'.PSome (rt, (L'.PVar ("a", rt), loc)), loc),
- (L'.EStrcat ((L'.EPrim (Prim.String (Prim.Normal, "Cons/")), loc),
- arg), loc))]
-
- val dom = tAll
- val ran = (L'.TFfi ("Basis", "string"), loc)
- in
- ((fk2s fk ^ "ify_list",
- n,
- (L'.TFun (dom, ran), loc),
- (L'.EAbs ("x",
- dom,
- ran,
- (L'.ECase ((L'.ERel 0, loc),
- branches,
- {disc = dom,
- result = ran}), loc)), loc),
- ""),
- fm)
- end
-
- val (fm, n) = Fm.lookupList fm fk t makeDecl
- in
- ((L'.EApp ((L'.ENamed n, loc), e), loc), fm)
- end
-
- | _ => (E.errorAt loc "Don't know how to encode attribute/URL type";
- Print.eprefaces' [("Type", MonoPrint.p_typ MonoEnv.empty tAll)];
- (dummyExp, fm))
- in
- fooify
- end
+ MonoFooify.fooifyExp
+ fk
+ (fn n =>
+ let
+ val (_, t, _, s) = Env.lookupENamed env n
+ in
+ (monoType env t, s)
+ end)
+ (fn n =>
+ let
+ val (x, _, xncs) = Env.lookupDatatype env n
+ in
+ (x, map (fn (x, n, c) => (x, n, Option.map (monoType env) c)) xncs)
+ end)
-val attrifyExp = fooifyExp Attr
-val urlifyExp = fooifyExp Url
+val attrifyExp = fooifyExp MonoFooify.Attr
+val urlifyExp = fooifyExp MonoFooify.Url
datatype 'a failable_search =
Found of 'a
@@ -1962,7 +1677,6 @@ fun monoExp (env, st, fm) (all as (e, loc)) =
(L'.ERel 1, loc)), loc),
(L'.ERel 0, loc)), loc),
(L'.ERecord [], loc)), loc)
-
val body = (L'.EQuery {exps = exps,
tables = tables,
state = state,
@@ -4653,12 +4367,14 @@ fun monoize env file =
val (nullable, notNullable) = calcClientish xts
fun cond (x, v) =
- (L'.EStrcat (str (Settings.mangleSql x
- ^ (case v of
- Client => ""
- | Channel => " >> 32")
- ^ " = "),
- target), loc)
+ (L'.EStrcat ((L'.EStrcat (str ("(("
+ ^ Settings.mangleSql x
+ ^ (case v of
+ Client => ""
+ | Channel => " >> 32")
+ ^ ") = "),
+ target), loc),
+ str ")"), loc)
val e =
foldl (fn ((x, v), e) =>
@@ -4678,16 +4394,19 @@ fun monoize env file =
[] => e
| eb :: ebs =>
(L'.ESeq (
- (L'.EDml (foldl
- (fn (eb, s) =>
- (L'.EStrcat (s,
- (L'.EStrcat (str " OR ",
- cond eb), loc)), loc))
- (L'.EStrcat (str ("DELETE FROM "
- ^ Settings.mangleSql tab
- ^ " WHERE "),
- cond eb), loc)
- ebs, L'.Error), loc),
+ (L'.EDml ((L'.EStrcat (str ("DELETE FROM "
+ ^ Settings.mangleSql tab
+ ^ " WHERE "),
+ foldl (fn (eb, s) =>
+ (L'.EStrcat (str "(",
+ (L'.EStrcat (s,
+ (L'.EStrcat (str " OR ",
+ (L'.EStrcat (cond eb,
+ str ")"),
+ loc)), loc)), loc)), loc))
+ (cond eb)
+ ebs), loc),
+ L'.Error), loc),
e), loc)
in
e
@@ -4750,7 +4469,7 @@ fun monoize env file =
val mname = CoreUtil.File.maxName file + 1
val () = nextPvar := mname
- val (_, _, ds) = List.foldl (fn (d, (env, fm, ds)) =>
+ val (_, fm, ds) = List.foldl (fn (d, (env, fm, ds)) =>
case #1 d of
L.DDatabase s =>
let
@@ -4793,12 +4512,14 @@ fun monoize env file =
(L'.DDatatype (dts @ !pvarDefs), loc) :: Fm.decls fm @ ds
| _ =>
ds' @ Fm.decls fm @ (L'.DDatatype (!pvarDefs), loc) :: ds)))
- (env, Fm.empty mname, []) file
+ (env, Fm.empty mname, []) file
+ val monoFile = (rev ds, [])
in
pvars := RM.empty;
pvarDefs := [];
pvarOldDefs := [];
- (rev ds, [])
+ MonoFooify.canonicalFm := Fm.empty (MonoUtil.File.maxName monoFile + 1);
+ monoFile
end
end
diff --git a/src/multimap_fn.sml b/src/multimap_fn.sml
new file mode 100644
index 00000000..3dab68a5
--- /dev/null
+++ b/src/multimap_fn.sml
@@ -0,0 +1,16 @@
+functor MultimapFn (structure KeyMap : ORD_MAP structure ValSet : ORD_SET) = struct
+ type key = KeyMap.Key.ord_key
+ type item = ValSet.item
+ type itemSet = ValSet.set
+ type multimap = ValSet.set KeyMap.map
+ val empty : multimap = KeyMap.empty
+ fun insertSet (kToVs : multimap, k : key, vs : itemSet) : multimap =
+ KeyMap.unionWith ValSet.union (kToVs, KeyMap.singleton (k, vs))
+ fun insert (kToVs : multimap, k : key, v : item) : multimap =
+ insertSet (kToVs, k, ValSet.singleton v)
+ fun findSet (kToVs : multimap, k : key) =
+ case KeyMap.find (kToVs, k) of
+ SOME vs => vs
+ | NONE => ValSet.empty
+ val findList : multimap * key -> item list = ValSet.listItems o findSet
+end
diff --git a/src/option_key_fn.sml b/src/option_key_fn.sml
new file mode 100644
index 00000000..27ba9138
--- /dev/null
+++ b/src/option_key_fn.sml
@@ -0,0 +1,12 @@
+functor OptionKeyFn(K : ORD_KEY)
+ : ORD_KEY where type ord_key = K.ord_key option = struct
+
+type ord_key = K.ord_key option
+
+val compare =
+ fn (NONE, NONE) => EQUAL
+ | (NONE, _) => LESS
+ | (_, NONE) => GREATER
+ | (SOME x, SOME y) => K.compare (x, y)
+
+end
diff --git a/src/pair_key_fn.sml b/src/pair_key_fn.sml
new file mode 100644
index 00000000..cd33950d
--- /dev/null
+++ b/src/pair_key_fn.sml
@@ -0,0 +1,12 @@
+functor PairKeyFn (structure I : ORD_KEY
+ structure J : ORD_KEY)
+ : ORD_KEY where type ord_key = I.ord_key * J.ord_key = struct
+
+type ord_key = I.ord_key * J.ord_key
+
+fun compare ((i1, j1), (i2, j2)) =
+ case I.compare (i1, i2) of
+ EQUAL => J.compare (j1, j2)
+ | ord => ord
+
+end
diff --git a/src/settings.sig b/src/settings.sig
index 3f39d3e2..732a31fa 100644
--- a/src/settings.sig
+++ b/src/settings.sig
@@ -283,6 +283,9 @@ signature SETTINGS = sig
val setLessSafeFfi : bool -> unit
val getLessSafeFfi : unit -> bool
+ val setSqlcache : bool -> unit
+ val getSqlcache : unit -> bool
+
val setFilePath : string -> unit
(* Sets the directory where we look for files being added below. *)
diff --git a/src/settings.sml b/src/settings.sml
index 650122ca..94692a2e 100644
--- a/src/settings.sml
+++ b/src/settings.sml
@@ -151,7 +151,8 @@ val effectfulBase = basis ["dml",
val effectful = ref effectfulBase
fun setEffectful ls = effectful := S.addList (effectfulBase, ls)
-fun isEffectful x = S.member (!effectful, x)
+fun isEffectful ("Sqlcache", _) = true
+ | isEffectful x = S.member (!effectful, x)
fun addEffectful x = effectful := S.add (!effectful, x)
val benignBase = basis ["get_cookie",
@@ -801,6 +802,10 @@ val less = ref false
fun setLessSafeFfi b = less := b
fun getLessSafeFfi () = !less
+val sqlcache = ref false
+fun setSqlcache b = sqlcache := b
+fun getSqlcache () = !sqlcache
+
structure SM = BinaryMapFn(struct
type ord_key = string
val compare = String.compare
diff --git a/src/sources b/src/sources
index a5235357..8bf80bc6 100644
--- a/src/sources
+++ b/src/sources
@@ -168,6 +168,27 @@ $(SRC)/mono_env.sml
$(SRC)/mono_print.sig
$(SRC)/mono_print.sml
+$(SRC)/mono_fooify.sig
+$(SRC)/mono_fooify.sml
+
+$(SRC)/sql.sig
+$(SRC)/sql.sml
+
+$(SRC)/union_find_fn.sml
+$(SRC)/multimap_fn.sml
+
+$(SRC)/list_key_fn.sml
+$(SRC)/option_key_fn.sml
+$(SRC)/pair_key_fn.sml
+$(SRC)/triple_key_fn.sml
+
+$(SRC)/cache.sml
+$(SRC)/toy_cache.sml
+$(SRC)/lru_cache.sml
+
+$(SRC)/sqlcache.sig
+$(SRC)/sqlcache.sml
+
$(SRC)/monoize.sig
$(SRC)/monoize.sml
@@ -186,8 +207,6 @@ $(SRC)/mono_shake.sml
$(SRC)/fuse.sig
$(SRC)/fuse.sml
-$(SRC)/sql.sml
-
$(SRC)/iflow.sig
$(SRC)/iflow.sml
@@ -206,6 +225,8 @@ $(SRC)/sidecheck.sml
$(SRC)/sigcheck.sig
$(SRC)/sigcheck.sml
+$(SRC)/mono_inline.sml
+
$(SRC)/cjr.sml
$(SRC)/postgres.sig
diff --git a/src/sql.sig b/src/sql.sig
new file mode 100644
index 00000000..317c157f
--- /dev/null
+++ b/src/sql.sig
@@ -0,0 +1,104 @@
+signature SQL = sig
+
+val debug : bool ref
+
+val sqlcacheMode : bool ref
+
+datatype chunk =
+ String of string
+ | Exp of Mono.exp
+
+val chunkify : Mono.exp -> chunk list
+
+type lvar = int
+
+datatype func =
+ DtCon0 of string
+ | DtCon1 of string
+ | UnCon of string
+ | Other of string
+
+datatype exp =
+ Const of Prim.t
+ | Var of int
+ | Lvar of lvar
+ | Func of func * exp list
+ | Recd of (string * exp) list
+ | Proj of exp * string
+
+datatype cmp =
+ Eq
+ | Ne
+ | Lt
+ | Le
+ | Gt
+ | Ge
+
+datatype reln =
+ Known
+ | Sql of string
+ | PCon0 of string
+ | PCon1 of string
+ | Cmp of cmp
+
+datatype lop =
+ And
+ | Or
+
+datatype prop =
+ True
+ | False
+ | Unknown
+ | Lop of lop * prop * prop
+ | Reln of reln * exp list
+ | Cond of exp * prop
+
+type 'a parser
+
+val parse : 'a parser -> Mono.exp -> 'a option
+
+datatype Rel =
+ RCmp of cmp
+ | RLop of lop
+
+datatype sqexp =
+ SqConst of Prim.t
+ | SqTrue
+ | SqFalse
+ | SqNot of sqexp
+ | Field of string * string
+ | Computed of string
+ | Binop of Rel * sqexp * sqexp
+ | SqKnown of sqexp
+ | Inj of Mono.exp
+ | SqFunc of string * sqexp
+ | Unmodeled
+ | Null
+
+datatype ('a,'b) sum = inl of 'a | inr of 'b
+
+datatype sitem =
+ SqField of string * string
+ | SqExp of sqexp * string
+
+datatype jtype = Inner | Left | Right | Full
+
+datatype fitem =
+ Table of string * string (* table AS name *)
+ | Join of jtype * fitem * fitem * sqexp
+ | Nested of query * string (* query AS name *)
+
+ and query =
+ Query1 of {Select : sitem list, From : fitem list, Where : sqexp option}
+ | Union of query * query
+
+val query : query parser
+
+datatype dml =
+ Insert of string * (string * sqexp) list
+ | Delete of string * sqexp
+ | Update of string * (string * sqexp) list * sqexp
+
+val dml : dml parser
+
+end
diff --git a/src/sql.sml b/src/sql.sml
index 91e303c3..dfe2f968 100644
--- a/src/sql.sml
+++ b/src/sql.sml
@@ -1,4 +1,4 @@
-structure Sql = struct
+structure Sql :> SQL = struct
open Mono
@@ -20,24 +20,30 @@ datatype exp =
| Recd of (string * exp) list
| Proj of exp * string
-datatype reln =
- Known
- | Sql of string
- | PCon0 of string
- | PCon1 of string
- | Eq
+datatype cmp =
+ Eq
| Ne
| Lt
| Le
| Gt
| Ge
+datatype reln =
+ Known
+ | Sql of string
+ | PCon0 of string
+ | PCon1 of string
+ | Cmp of cmp
+
+datatype lop =
+ And
+ | Or
+
datatype prop =
True
| False
| Unknown
- | And of prop * prop
- | Or of prop * prop
+ | Lop of lop * prop * prop
| Reln of reln * exp list
| Cond of exp * prop
@@ -146,6 +152,18 @@ fun keep cp chs =
end
| _ => NONE
+(* Used by primSqlcache. *)
+fun optConst s chs =
+ case chs of
+ String s' :: chs => if String.isPrefix s s' then
+ SOME (s, if size s = size s' then
+ chs
+ else
+ String (String.extract (s', size s, NONE)) :: chs)
+ else
+ SOME ("", String s' :: chs)
+ | _ => NONE
+
fun ws p = wrap (follow (skip (fn ch => ch = #" "))
(follow p (skip (fn ch => ch = #" ")))) (#1 o #2)
@@ -177,14 +195,14 @@ val uw_ident = wrapP ident (fn s => if String.isPrefix "uw_" s andalso size s >=
else
NONE)
-val field = wrap (follow t_ident
- (follow (const ".")
- uw_ident))
- (fn (t, ((), f)) => (t, f))
+val field = wrap (follow (opt (follow t_ident (const ".")))
+ uw_ident)
+ (fn (SOME (t, ()), f) => (t, f)
+ | (NONE, f) => ("T", f)) (* Should probably deal with this MySQL/SQLite case better some day. *)
datatype Rel =
- Exps of exp * exp -> prop
- | Props of prop * prop -> prop
+ RCmp of cmp
+ | RLop of lop
datatype sqexp =
SqConst of Prim.t
@@ -200,7 +218,7 @@ datatype sqexp =
| Unmodeled
| Null
-fun cmp s r = wrap (const s) (fn () => Exps (fn (e1, e2) => Reln (r, [e1, e2])))
+fun cmp s r = wrap (const s) (fn () => RCmp r)
val sqbrel = altL [cmp "=" Eq,
cmp "<>" Ne,
@@ -208,8 +226,8 @@ val sqbrel = altL [cmp "=" Eq,
cmp "<" Lt,
cmp ">=" Ge,
cmp ">" Gt,
- wrap (const "AND") (fn () => Props And),
- wrap (const "OR") (fn () => Props Or)]
+ wrap (const "AND") (fn () => RLop And),
+ wrap (const "OR") (fn () => RLop Or)]
datatype ('a, 'b) sum = inl of 'a | inr of 'b
@@ -238,7 +256,7 @@ fun string chs =
end
else
NONE
- | _ => NONE
+ | _ => NONE
val prim =
altL [wrap (follow (wrapP (follow (keep Char.isDigit) (follow (const ".") (keep Char.isDigit)))
@@ -250,6 +268,23 @@ val prim =
wrap (follow (opt (const "E")) (follow string (opt (const "::text"))))
((fn s => Prim.String (Prim.Normal, s)) o #1 o #2)]
+val primSqlcache =
+ (* Like [prim], but always uses [Prim.String]s. *)
+ let
+ fun wrapS p f = wrap p ((fn s => Prim.String (Prim.Normal, s)) o f)
+ in
+ altL [wrapS (follow (wrap (follow (keep Char.isDigit)
+ (follow (const ".") (keep Char.isDigit)))
+ (fn (x, ((), y)) => x ^ "." ^ y))
+ (optConst "::float8"))
+ op^,
+ wrapS (follow (keep Char.isDigit)
+ (optConst "::int8"))
+ op^,
+ wrapS (follow (optConst "E") (follow string (optConst "::text")))
+ (fn (c1, (s, c2)) => c1 ^ s ^ c2)]
+end
+
fun known' chs =
case chs of
Exp (EFfi ("Basis", "sql_known"), _) :: chs => SOME ((), chs)
@@ -267,9 +302,15 @@ fun sqlify chs =
((PCon (_, PConFfi {mod = "Basis", con = "False", ...}, NONE), _),
(EPrim (Prim.String (Prim.Normal, "FALSE")), _))], _), _) :: chs =>
SOME (e, chs)
-
+
| _ => NONE
+(* For sqlcache, we only care that we can do string equality on injected Mono
+ expressions, so accept any expression without modifying it. *)
+val sqlifySqlcache =
+ fn Exp e :: chs => SOME (e, chs)
+ | _ => NONE
+
fun constK s = wrap (const s) (fn () => s)
val funcName = altL [constK "COUNT",
@@ -278,12 +319,19 @@ val funcName = altL [constK "COUNT",
constK "SUM",
constK "AVG"]
+fun arithmetic pExp = follow (const "(")
+ (follow pExp
+ (follow (altL (map const [" + ", " - ", " * ", " / ", " >> ", " << "]))
+ (follow pExp (const ")"))))
+
val unmodeled = altL [const "COUNT(*)",
const "CURRENT_TIMESTAMP"]
+val sqlcacheMode = ref false;
+
fun sqexp chs =
log "sqexp"
- (altL [wrap prim SqConst,
+ (altL [wrap (if !sqlcacheMode then primSqlcache else prim) SqConst,
wrap (const "TRUE") (fn () => SqTrue),
wrap (const "FALSE") (fn () => SqFalse),
wrap (const "NULL") (fn () => Null),
@@ -291,8 +339,9 @@ fun sqexp chs =
wrap uw_ident Computed,
wrap known SqKnown,
wrap func SqFunc,
+ wrap (arithmetic sqexp) (fn _ => Unmodeled),
wrap unmodeled (fn () => Unmodeled),
- wrap sqlify Inj,
+ wrap (if !sqlcacheMode then sqlifySqlcache else sqlify) Inj,
wrap (follow (const "COALESCE(") (follow sqexp (follow (const ",")
(follow (keep (fn ch => ch <> #")")) (const ")")))))
(fn ((), (e, _)) => e),
@@ -317,7 +366,7 @@ fun sqexp chs =
and known chs = wrap (follow known' (follow (const "(") (follow sqexp (const ")"))))
(fn ((), ((), (e, ()))) => e) chs
-
+
and func chs = wrap (follow funcName (follow (const "(") (follow sqexp (const ")"))))
(fn (f, ((), (e, ()))) => (f, e)) chs
@@ -333,48 +382,71 @@ val select = log "select"
(wrap (follow (const "SELECT ") (list sitem))
(fn ((), ls) => ls))
-val fitem = wrap (follow uw_ident
- (follow (const " AS ")
- t_ident))
- (fn (t, ((), f)) => (t, f))
+datatype jtype = Inner | Left | Right | Full
-val from = log "from"
- (wrap (follow (const "FROM ") (list fitem))
- (fn ((), ls) => ls))
+datatype fitem =
+ Table of string * string (* table AS name *)
+ | Join of jtype * fitem * fitem * sqexp
+ | Nested of query * string (* query AS name *)
+
+ and query =
+ Query1 of {Select : sitem list, From : fitem list, Where : sqexp option}
+ | Union of query * query
val wher = wrap (follow (ws (const "WHERE ")) sqexp)
(fn ((), ls) => ls)
-type query1 = {Select : sitem list,
- From : (string * string) list,
- Where : sqexp option}
-
-val query1 = log "query1"
- (wrap (follow (follow select from) (opt wher))
- (fn ((fs, ts), wher) => {Select = fs, From = ts, Where = wher}))
-
-datatype query =
- Query1 of query1
- | Union of query * query
-
val orderby = log "orderby"
(wrap (follow (ws (const "ORDER BY "))
- (follow (list sqexp)
- (opt (ws (const "DESC")))))
+ (list (follow sqexp
+ (opt (ws (const "DESC"))))))
ignore)
-fun query chs = log "query"
- (wrap
- (follow
- (alt (wrap (follow (const "((")
- (follow query
- (follow (const ") UNION (")
- (follow query (const "))")))))
- (fn ((), (q1, ((), (q2, ())))) => Union (q1, q2)))
- (wrap query1 Query1))
- (opt orderby))
- #1)
- chs
+val jtype = altL [wrap (const "JOIN") (fn () => Inner),
+ wrap (const "LEFT JOIN") (fn () => Left),
+ wrap (const "RIGHT JOIN") (fn () => Right),
+ wrap (const "FULL JOIN") (fn () => Full)]
+
+fun fitem chs = altL [wrap (follow uw_ident
+ (follow (const " AS ")
+ t_ident))
+ (fn (t, ((), f)) => Table (t, f)),
+ wrap (follow (const "(")
+ (follow fitem
+ (follow (ws jtype)
+ (follow fitem
+ (follow (const " ON ")
+ (follow sqexp
+ (const ")")))))))
+ (fn ((), (fi1, (jt, (fi2, ((), (se, ())))))) =>
+ Join (jt, fi1, fi2, se)),
+ wrap (follow (const "(")
+ (follow query
+ (follow (const ") AS ") t_ident)))
+ (fn ((), (q, ((), f))) => Nested (q, f))]
+ chs
+
+and query1 chs = log "query1"
+ (wrap (follow (follow select from) (opt wher))
+ (fn ((fs, ts), wher) => {Select = fs, From = ts, Where = wher}))
+ chs
+
+and from chs = log "from"
+ (wrap (follow (const "FROM ") (list fitem))
+ (fn ((), ls) => ls))
+ chs
+
+and query chs = log "query"
+ (wrap (follow
+ (alt (wrap (follow (const "((")
+ (follow query
+ (follow (const ") UNION (")
+ (follow query (const "))")))))
+ (fn ((), (q1, ((), (q2, ())))) => Union (q1, q2)))
+ (wrap query1 Query1))
+ (opt orderby))
+ #1)
+ chs
datatype dml =
Insert of string * (string * sqexp) list
@@ -396,22 +468,24 @@ val insert = log "insert"
val delete = log "delete"
(wrap (follow (const "DELETE FROM ")
(follow uw_ident
- (follow (const " AS T_T WHERE ")
- sqexp)))
- (fn ((), (tab, ((), es))) => (tab, es)))
+ (follow (opt (const " AS T_T"))
+ (opt (follow (const " WHERE ") sqexp)))))
+ (fn ((), (tab, (_, wher))) => (tab, case wher of
+ SOME (_, es) => es
+ | NONE => SqTrue)))
val setting = log "setting"
- (wrap (follow uw_ident (follow (const " = ") sqexp))
- (fn (f, ((), e)) => (f, e)))
+ (wrap (follow uw_ident (follow (const " = ") sqexp))
+ (fn (f, ((), e)) => (f, e)))
val update = log "update"
(wrap (follow (const "UPDATE ")
(follow uw_ident
- (follow (const " AS T_T SET ")
+ (follow (follow (opt (const " AS T_T")) (const " SET "))
(follow (list setting)
(follow (ws (const "WHERE "))
sqexp)))))
- (fn ((), (tab, ((), (fs, ((), e))))) =>
+ (fn ((), (tab, (_, (fs, ((), e))))) =>
(tab, fs, e)))
val dml = log "dml"
diff --git a/src/sqlcache.sig b/src/sqlcache.sig
new file mode 100644
index 00000000..e264c1f0
--- /dev/null
+++ b/src/sqlcache.sig
@@ -0,0 +1,11 @@
+signature SQLCACHE = sig
+
+val setCache : Cache.cache -> unit
+val getCache : unit -> Cache.cache
+
+val setHeuristic : string -> unit
+
+val getFfiInfo : unit -> {index : int, params : int} list
+val go : Mono.file -> Mono.file
+
+end
diff --git a/src/sqlcache.sml b/src/sqlcache.sml
new file mode 100644
index 00000000..75a17e48
--- /dev/null
+++ b/src/sqlcache.sml
@@ -0,0 +1,1730 @@
+structure Sqlcache :> SQLCACHE = struct
+
+
+(*********************)
+(* General Utilities *)
+(*********************)
+
+structure IK = struct type ord_key = int val compare = Int.compare end
+structure IS = IntBinarySet
+structure IM = IntBinaryMap
+structure SK = struct type ord_key = string val compare = String.compare end
+structure SS = BinarySetFn(SK)
+structure SM = BinaryMapFn(SK)
+structure IIMM = MultimapFn(structure KeyMap = IM structure ValSet = IS)
+structure SIMM = MultimapFn(structure KeyMap = SM structure ValSet = IS)
+
+fun id x = x
+
+fun iterate f n x = if n < 0
+ then raise Fail "Can't iterate function negative number of times."
+ else if n = 0
+ then x
+ else iterate f (n-1) (f x)
+
+(* From the MLton wiki. *)
+infix 3 <\ fun x <\ f = fn y => f (x, y) (* Left section *)
+infix 3 \> fun f \> y = f y (* Left application *)
+
+fun mapFst f (x, y) = (f x, y)
+
+(* Option monad. *)
+fun obind (x, f) = Option.mapPartial f x
+fun oguard (b, x) = if b then x () else NONE
+fun omap f = fn SOME x => SOME (f x) | _ => NONE
+fun omap2 f = fn (SOME x, SOME y) => SOME (f (x,y)) | _ => NONE
+fun osequence ys = List.foldr (omap2 op::) (SOME []) ys
+
+fun concatMap f xs = List.concat (map f xs)
+
+val rec cartesianProduct : 'a list list -> 'a list list =
+ fn [] => [[]]
+ | (xs :: xss) => concatMap (fn ys => concatMap (fn x => [x :: ys]) xs)
+ (cartesianProduct xss)
+
+fun indexOf test =
+ let
+ fun f n =
+ fn [] => NONE
+ | (x::xs) => if test x then SOME n else f (n+1) xs
+ in
+ f 0
+ end
+
+
+(************)
+(* Settings *)
+(************)
+
+open Mono
+
+(* Filled in by [addFlushing]. *)
+val ffiInfoRef : {index : int, params : int} list ref = ref []
+
+fun resetFfiInfo () = ffiInfoRef := []
+
+fun getFfiInfo () = !ffiInfoRef
+
+(* Some FFIs have writing as their only effect, which the caching records. *)
+val ffiEffectful =
+ (* ASK: how can this be less hard-coded? *)
+ let
+ val okayWrites = SS.fromList ["htmlifyInt_w",
+ "htmlifyFloat_w",
+ "htmlifyString_w",
+ "htmlifyBool_w",
+ "htmlifyTime_w",
+ "attrifyInt_w",
+ "attrifyFloat_w",
+ "attrifyString_w",
+ "attrifyChar_w",
+ "urlifyInt_w",
+ "urlifyFloat_w",
+ "urlifyString_w",
+ "urlifyBool_w",
+ "urlifyChannel_w"]
+ in
+ (* ASK: is it okay to hardcode Sqlcache functions as effectful? *)
+ fn (m, f) => Settings.isEffectful (m, f)
+ andalso not (m = "Basis" andalso SS.member (okayWrites, f))
+ end
+
+val cacheRef = ref LruCache.cache
+fun setCache c = cacheRef := c
+fun getCache () = !cacheRef
+
+datatype heuristic = Smart | Always | Never | NoPureAll | NoPureOne | NoCombo
+
+val heuristicRef = ref NoPureOne
+fun setHeuristic h = heuristicRef := (case h of
+ "smart" => Smart
+ | "always" => Always
+ | "never" => Never
+ | "nopureall" => NoPureAll
+ | "nopureone" => NoPureOne
+ | "nocombo" => NoCombo
+ | _ => raise Fail "Sqlcache: setHeuristic")
+fun getHeuristic () = !heuristicRef
+
+
+(************************)
+(* Really Useful Things *)
+(************************)
+
+(* Used to have type context for local variables in MonoUtil functions. *)
+val doBind =
+ fn (env, MonoUtil.Exp.RelE (x, t)) => MonoEnv.pushERel env x t NONE
+ | (env, MonoUtil.Exp.NamedE (x, n, t, eo, s)) => MonoEnv.pushENamed env x n t eo s
+ | (env, MonoUtil.Exp.Datatype (x, n, cs)) => MonoEnv.pushDatatype env x n cs
+
+val dummyLoc = ErrorMsg.dummySpan
+
+(* DEBUG *)
+fun printExp msg exp =
+ (Print.preface ("SQLCACHE: " ^ msg ^ ":", MonoPrint.p_exp MonoEnv.empty exp); exp)
+fun printExp' msg exp' = (printExp msg (exp', dummyLoc); exp')
+fun printTyp msg typ =
+ (Print.preface ("SQLCACHE: " ^ msg ^ ":", MonoPrint.p_typ MonoEnv.empty typ); typ)
+fun printTyp' msg typ' = (printTyp msg (typ', dummyLoc); typ')
+fun obindDebug printer (x, f) =
+ case x of
+ NONE => NONE
+ | SOME x' => case f x' of
+ NONE => (printer (); NONE)
+ | y => y
+
+
+(*******************)
+(* Effect Analysis *)
+(*******************)
+
+(* TODO: test this. *)
+fun transitiveAnalysis doVal state (decls, _) =
+ let
+ val doDecl =
+ fn ((DVal v, _), state) => doVal (v, state)
+ (* Pass over the list of values a number of times equal to its size,
+ making sure whatever property we're testing propagates everywhere
+ it should. This is analagous to the Bellman-Ford algorithm. *)
+ | ((DValRec vs, _), state) =>
+ iterate (fn state => List.foldl doVal state vs) (length vs) state
+ | (_, state) => state
+ in
+ List.foldl doDecl state decls
+ end
+
+(* Makes an exception for [EWrite] (which is recorded when caching). *)
+fun effectful (effs : IS.set) =
+ let
+ val isFunction =
+ fn (TFun _, _) => true
+ | _ => false
+ fun doExp (env, e) =
+ case e of
+ EPrim _ => false
+ (* For now: variables of function type might be effectful, but
+ others are fully evaluated and are therefore not effectful. *)
+ | ERel n => isFunction (#2 (MonoEnv.lookupERel env n))
+ | ENamed n => IS.member (effs, n)
+ | EFfi (m, f) => ffiEffectful (m, f)
+ | EFfiApp (m, f, _) => ffiEffectful (m, f)
+ (* These aren't effectful unless a subexpression is. *)
+ | ECon _ => false
+ | ENone _ => false
+ | ESome _ => false
+ | EApp _ => false
+ | EAbs _ => false
+ | EUnop _ => false
+ | EBinop _ => false
+ | ERecord _ => false
+ | EField _ => false
+ | ECase _ => false
+ | EStrcat _ => false
+ (* EWrite is a special exception because we record writes when caching. *)
+ | EWrite _ => false
+ | ESeq _ => false
+ | ELet _ => false
+ | EUnurlify _ => false
+ (* ASK: what should we do about closures? *)
+ (* Everything else is some sort of effect. We could flip this and
+ explicitly list bits of Mono that are effectful, but this is
+ conservatively robust to future changes (however unlikely). *)
+ | _ => true
+ in
+ MonoUtil.Exp.existsB {typ = fn _ => false, exp = doExp, bind = doBind}
+ end
+
+(* TODO: test this. *)
+fun effectfulDecls file =
+ transitiveAnalysis (fn ((_, name, _, e, _), effs) =>
+ if effectful effs MonoEnv.empty e
+ then IS.add (effs, name)
+ else effs)
+ IS.empty
+ file
+
+
+(*********************************)
+(* Boolean Formula Normalization *)
+(*********************************)
+
+datatype junctionType = Conj | Disj
+
+datatype 'atom formula =
+ Atom of 'atom
+ | Negate of 'atom formula
+ | Combo of junctionType * 'atom formula list
+
+(* Guaranteed to have all negation pushed to the atoms. *)
+datatype 'atom formula' =
+ Atom' of 'atom
+ | Combo' of junctionType * 'atom formula' list
+
+val flipJt = fn Conj => Disj | Disj => Conj
+
+(* Pushes all negation to the atoms.*)
+fun pushNegate (normalizeAtom : bool * 'atom -> 'atom) (negating : bool) =
+ fn Atom x => Atom' (normalizeAtom (negating, x))
+ | Negate f => pushNegate normalizeAtom (not negating) f
+ | Combo (j, fs) => Combo' (if negating then flipJt j else j,
+ map (pushNegate normalizeAtom negating) fs)
+
+val rec flatten =
+ fn Combo' (_, [f]) => flatten f
+ | Combo' (j, fs) =>
+ Combo' (j, List.foldr (fn (f, acc) =>
+ case f of
+ Combo' (j', fs') =>
+ if j = j' orelse length fs' = 1
+ then fs' @ acc
+ else f :: acc
+ | _ => f :: acc)
+ []
+ (map flatten fs))
+ | f => f
+
+(* [simplify] operates on the desired normal form. E.g., if [junc] is [Disj],
+ consider the list of lists to be a disjunction of conjunctions. *)
+fun normalize' (simplify : 'a list list -> 'a list list)
+ (junc : junctionType) =
+ let
+ fun norm junc =
+ simplify
+ o (fn Atom' x => [[x]]
+ | Combo' (j, fs) =>
+ let
+ val fss = map (norm junc) fs
+ in
+ if j = junc
+ then List.concat fss
+ else map List.concat (cartesianProduct fss)
+ end)
+ in
+ norm junc
+ end
+
+fun normalize simplify normalizeAtom junc =
+ normalize' simplify junc
+ o flatten
+ o pushNegate normalizeAtom false
+
+fun mapFormula mf =
+ fn Atom x => Atom (mf x)
+ | Negate f => Negate (mapFormula mf f)
+ | Combo (j, fs) => Combo (j, map (mapFormula mf) fs)
+
+fun mapFormulaExps mf = mapFormula (fn (cmp, e1, e2) => (cmp, mf e1, mf e2))
+
+
+(****************)
+(* SQL Analysis *)
+(****************)
+
+structure CmpKey = struct
+
+ type ord_key = Sql.cmp
+
+ val compare =
+ fn (Sql.Eq, Sql.Eq) => EQUAL
+ | (Sql.Eq, _) => LESS
+ | (_, Sql.Eq) => GREATER
+ | (Sql.Ne, Sql.Ne) => EQUAL
+ | (Sql.Ne, _) => LESS
+ | (_, Sql.Ne) => GREATER
+ | (Sql.Lt, Sql.Lt) => EQUAL
+ | (Sql.Lt, _) => LESS
+ | (_, Sql.Lt) => GREATER
+ | (Sql.Le, Sql.Le) => EQUAL
+ | (Sql.Le, _) => LESS
+ | (_, Sql.Le) => GREATER
+ | (Sql.Gt, Sql.Gt) => EQUAL
+ | (Sql.Gt, _) => LESS
+ | (_, Sql.Gt) => GREATER
+ | (Sql.Ge, Sql.Ge) => EQUAL
+
+end
+
+val rec chooseTwos : 'a list -> ('a * 'a) list =
+ fn [] => []
+ | x :: ys => map (fn y => (x, y)) ys @ chooseTwos ys
+
+fun removeRedundant madeRedundantBy zs =
+ let
+ fun removeRedundant' (xs, ys) =
+ case xs of
+ [] => ys
+ | x :: xs' =>
+ removeRedundant' (xs',
+ if List.exists (fn y => madeRedundantBy (x, y)) (xs' @ ys)
+ then ys
+ else x :: ys)
+ in
+ removeRedundant' (zs, [])
+ end
+
+datatype atomExp =
+ True
+ | False
+ | QueryArg of int
+ | DmlRel of int
+ | Prim of Prim.t
+ | Field of string * string
+
+structure AtomExpKey : ORD_KEY = struct
+
+ type ord_key = atomExp
+
+ val compare =
+ fn (True, True) => EQUAL
+ | (True, _) => LESS
+ | (_, True) => GREATER
+ | (False, False) => EQUAL
+ | (False, _) => LESS
+ | (_, False) => GREATER
+ | (QueryArg n1, QueryArg n2) => Int.compare (n1, n2)
+ | (QueryArg _, _) => LESS
+ | (_, QueryArg _) => GREATER
+ | (DmlRel n1, DmlRel n2) => Int.compare (n1, n2)
+ | (DmlRel _, _) => LESS
+ | (_, DmlRel _) => GREATER
+ | (Prim p1, Prim p2) => Prim.compare (p1, p2)
+ | (Prim _, _) => LESS
+ | (_, Prim _) => GREATER
+ | (Field (t1, f1), Field (t2, f2)) =>
+ case String.compare (t1, t2) of
+ EQUAL => String.compare (f1, f2)
+ | ord => ord
+
+end
+
+structure AtomOptionKey = OptionKeyFn(AtomExpKey)
+
+val rec tablesOfQuery =
+ fn Sql.Query1 {From = fitems, ...} => List.foldl SS.union SS.empty (map tableOfFitem fitems)
+ | Sql.Union (q1, q2) => SS.union (tablesOfQuery q1, tablesOfQuery q2)
+and tableOfFitem =
+ fn Sql.Table (t, _) => SS.singleton t
+ | Sql.Nested (q, _) => tablesOfQuery q
+ | Sql.Join (_, f1, f2, _) => SS.union (tableOfFitem f1, tableOfFitem f2)
+
+val tableOfDml =
+ fn Sql.Insert (tab, _) => tab
+ | Sql.Delete (tab, _) => tab
+ | Sql.Update (tab, _, _) => tab
+
+val freeVars =
+ MonoUtil.Exp.foldB
+ {typ = #2,
+ exp = fn (bound, ERel n, vars) => if n < bound
+ then vars
+ else IS.add (vars, n - bound)
+ | (_, _, vars) => vars,
+ bind = fn (bound, MonoUtil.Exp.RelE _) => bound + 1
+ | (bound, _) => bound}
+ 0
+ IS.empty
+
+(* A path is a number of field projections of a variable. *)
+type path = int * string list
+structure PK = PairKeyFn(structure I = IK structure J = ListKeyFn(SK))
+structure PS = BinarySetFn(PK)
+
+val pathOfExp =
+ let
+ fun readFields acc exp =
+ acc
+ <\obind\>
+ (fn fs =>
+ case #1 exp of
+ ERel n => SOME (n, fs)
+ | EField (exp, f) => readFields (SOME (f::fs)) exp
+ | _ => NONE)
+ in
+ readFields (SOME [])
+ end
+
+fun expOfPath (n, fs) =
+ List.foldl (fn (f, exp) => (EField (exp, f), dummyLoc)) (ERel n, dummyLoc) fs
+
+fun freePaths'' bound exp paths =
+ case pathOfExp (exp, dummyLoc) of
+ NONE => paths
+ | SOME (n, fs) => if n < bound then paths else PS.add (paths, (n - bound, fs))
+
+(* ASK: nicer way? :( *)
+fun freePaths' bound exp =
+ case #1 exp of
+ EPrim _ => id
+ | e as ERel _ => freePaths'' bound e
+ | ENamed _ => id
+ | ECon (_, _, data) => (case data of NONE => id | SOME e => freePaths' bound e)
+ | ENone _ => id
+ | ESome (_, e) => freePaths' bound e
+ | EFfi _ => id
+ | EFfiApp (_, _, args) =>
+ List.foldl (fn ((e, _), acc) => freePaths' bound e o acc) id args
+ | EApp (e1, e2) => freePaths' bound e1 o freePaths' bound e2
+ | EAbs (_, _, _, e) => freePaths' (bound + 1) e
+ | EUnop (_, e) => freePaths' bound e
+ | EBinop (_, _, e1, e2) => freePaths' bound e1 o freePaths' bound e2
+ | ERecord fields => List.foldl (fn ((_, e, _), acc) => freePaths' bound e o acc) id fields
+ | e as EField _ => freePaths'' bound e
+ | ECase (e, cases, _) =>
+ List.foldl (fn ((p, e), acc) => freePaths' (MonoEnv.patBindsN p + bound) e o acc)
+ (freePaths' bound e)
+ cases
+ | EStrcat (e1, e2) => freePaths' bound e1 o freePaths' bound e2
+ | EError (e, _) => freePaths' bound e
+ | EReturnBlob {blob, mimeType = e, ...} =>
+ freePaths' bound e o (case blob of NONE => id | SOME e => freePaths' bound e)
+ | ERedirect (e, _) => freePaths' bound e
+ | EWrite e => freePaths' bound e
+ | ESeq (e1, e2) => freePaths' bound e1 o freePaths' bound e2
+ | ELet (_, _, e1, e2) => freePaths' bound e1 o freePaths' (bound + 1) e2
+ | EClosure (_, es) => List.foldl (fn (e, acc) => freePaths' bound e o acc) id es
+ | EQuery {query = e1, body = e2, initial = e3, ...} =>
+ freePaths' bound e1 o freePaths' (bound + 2) e2 o freePaths' bound e3
+ | EDml (e, _) => freePaths' bound e
+ | ENextval e => freePaths' bound e
+ | ESetval (e1, e2) => freePaths' bound e1 o freePaths' bound e2
+ | EUnurlify (e, _, _) => freePaths' bound e
+ | EJavaScript (_, e) => freePaths' bound e
+ | ESignalReturn e => freePaths' bound e
+ | ESignalBind (e1, e2) => freePaths' bound e1 o freePaths' bound e2
+ | ESignalSource e => freePaths' bound e
+ | EServerCall (e, _, _, _) => freePaths' bound e
+ | ERecv (e, _) => freePaths' bound e
+ | ESleep e => freePaths' bound e
+ | ESpawn e => freePaths' bound e
+
+fun freePaths exp = freePaths' 0 exp PS.empty
+
+datatype unbind = Known of exp | Unknowns of int
+
+datatype cacheArg = AsIs of exp | Urlify of exp
+
+structure InvalInfo :> sig
+ type t
+ type state = {tableToIndices : SIMM.multimap,
+ indexToInvalInfo : (t * int) IntBinaryMap.map,
+ ffiInfo : {index : int, params : int} list,
+ index : int}
+ val empty : t
+ val singleton : Sql.query -> t
+ val query : t -> Sql.query
+ val orderArgs : t * Mono.exp -> cacheArg list option
+ val unbind : t * unbind -> t option
+ val union : t * t -> t
+ val updateState : t * int * state -> state
+end = struct
+
+ (* Variable, field projections, possible wrapped sqlification FFI call. *)
+ type sqlArg = path * (string * string * typ) option
+
+ type subst = sqlArg IM.map
+
+ (* TODO: store free variables as well? *)
+ type t = (Sql.query * subst) list
+
+ type state = {tableToIndices : SIMM.multimap,
+ indexToInvalInfo : (t * int) IntBinaryMap.map,
+ ffiInfo : {index : int, params : int} list,
+ index : int}
+
+ structure AK = PairKeyFn(
+ structure I = PK
+ structure J = OptionKeyFn(TripleKeyFn(
+ structure I = SK
+ structure J = SK
+ structure K = struct type ord_key = Mono.typ val compare = MonoUtil.Typ.compare end)))
+ structure AS = BinarySetFn(AK)
+ structure AM = BinaryMapFn(AK)
+
+ (* Traversal Utilities *)
+ (* TODO: get rid of unused ones. *)
+
+ (* Need lift', etc. because we don't have rank-2 polymorphism. This should
+ probably use a functor (an ML one, not Haskell) but works for now. *)
+ fun traverseSqexp (pure, _, _, _, lift, lift', _, _, lift2, _, _, _, _, _) f =
+ let
+ val rec tr =
+ fn Sql.SqNot se => lift Sql.SqNot (tr se)
+ | Sql.Binop (r, se1, se2) =>
+ lift2 (fn (trse1, trse2) => Sql.Binop (r, trse1, trse2)) (tr se1, tr se2)
+ | Sql.SqKnown se => lift Sql.SqKnown (tr se)
+ | Sql.Inj (e', loc) => lift' (fn fe' => Sql.Inj (fe', loc)) (f e')
+ | Sql.SqFunc (s, se) => lift (fn trse => Sql.SqFunc (s, trse)) (tr se)
+ | se => pure se
+ in
+ tr
+ end
+
+ fun traverseFitem (ops as (_, _, _, pure''', _, _, _, lift''', _, _, _, _, lift2'''', lift2''''')) f =
+ let
+ val rec tr =
+ fn Sql.Table t => pure''' (Sql.Table t)
+ | Sql.Join (jt, fi1, fi2, se) =>
+ lift2'''' (fn ((trfi1, trfi2), trse) => Sql.Join (jt, trfi1, trfi2, trse))
+ (lift2''''' id (tr fi1, tr fi2), traverseSqexp ops f se)
+ | Sql.Nested (q, s) => lift''' (fn trq => Sql.Nested (trq, s))
+ (traverseQuery ops f q)
+ in
+ tr
+ end
+
+ and traverseQuery (ops as (_, pure', pure'', _, _, _, lift'', _, _, lift2', lift2'', lift2''', _, _)) f =
+ let
+ val rec seqList =
+ fn [] => pure'' []
+ | (x::xs) => lift2''' op:: (x, seqList xs)
+ val rec tr =
+ fn Sql.Query1 q =>
+ (* TODO: make sure we don't need to traverse [#Select q]. *)
+ lift2' (fn (trfrom, trwher) => Sql.Query1 {Select = #Select q,
+ From = trfrom,
+ Where = trwher})
+ (seqList (map (traverseFitem ops f) (#From q)),
+ case #Where q of
+ NONE => pure' NONE
+ | SOME se => lift'' SOME (traverseSqexp ops f se))
+ | Sql.Union (q1, q2) => lift2'' Sql.Union (tr q1, tr q2)
+ in
+ tr
+ end
+
+ (* Include unused tuple elements in argument for convenience of using same
+ argument as [traverseQuery]. *)
+ fun traverseIM (pure, _, _, _, _, _, _, _, _, lift2, _, _, _, _) f =
+ IM.foldli (fn (k, v, acc) => lift2 (fn (acc, w) => IM.insert (acc, k, w)) (acc, f (k,v)))
+ (pure IM.empty)
+
+ fun traverseSubst (ops as (_, pure', _, _, lift, _, _, _, _, lift2', _, _, _, _)) f =
+ let
+ fun mp ((n, fields), sqlify) =
+ lift (fn ((n', fields'), sqlify') =>
+ let
+ fun wrap sq = ((n', fields' @ fields), sq)
+ in
+ case (fields', sqlify', fields, sqlify) of
+ (_, NONE, _, NONE) => wrap NONE
+ | (_, NONE, _, sq as SOME _) => wrap sq
+ (* Last case should suffice because we don't
+ project from a sqlified value (which is a
+ string). *)
+ | (_, sq as SOME _, [], NONE) => wrap sq
+ | _ => raise Fail "Sqlcache: traverseSubst"
+ end)
+ (f n)
+ in
+ traverseIM ops (fn (_, v) => mp v)
+ end
+
+ fun monoidOps plus zero =
+ (fn _ => zero, fn _ => zero, fn _ => zero, fn _ => zero,
+ fn _ => fn x => x, fn _ => fn x => x, fn _ => fn x => x, fn _ => fn x => x,
+ fn _ => plus, fn _ => plus, fn _ => plus, fn _ => plus, fn _ => plus, fn _ => plus)
+
+ val optionOps = (SOME, SOME, SOME, SOME,
+ omap, omap, omap, omap,
+ omap2, omap2, omap2, omap2, omap2, omap2)
+
+ fun foldMapQuery plus zero = traverseQuery (monoidOps plus zero)
+ val omapQuery = traverseQuery optionOps
+ fun foldMapIM plus zero = traverseIM (monoidOps plus zero)
+ fun omapIM f = traverseIM optionOps f
+ fun foldMapSubst plus zero = traverseSubst (monoidOps plus zero)
+ fun omapSubst f = traverseSubst optionOps f
+
+ val varsOfQuery = foldMapQuery IS.union
+ IS.empty
+ (fn e' => freeVars (e', dummyLoc))
+
+ fun varsOfSubst subst = foldMapSubst IS.union IS.empty IS.singleton subst
+
+ val varsOfList =
+ fn [] => IS.empty
+ | (q::qs) => varsOfQuery (List.foldl Sql.Union q qs)
+
+ (* Signature Implementation *)
+
+ val empty = []
+
+ fun singleton q = [(q, IS.foldl (fn (n, acc) => IM.insert (acc, n, ((n, []), NONE)))
+ IM.empty
+ (varsOfQuery q))]
+
+ val union = op@
+
+ fun sqlArgsSet (q, subst) =
+ IM.foldl AS.add' AS.empty subst
+
+ fun sqlArgsMap (qs : t) =
+ let
+ val args =
+ List.foldl (fn ((q, subst), acc) =>
+ IM.foldl (fn (arg, acc) => AM.insert (acc, arg, ())) acc subst)
+ AM.empty
+ qs
+ val countRef = ref (~1)
+ fun count () = (countRef := !countRef + 1; !countRef)
+ in
+ (* Maps each arg to a different consecutive integer, starting from 0. *)
+ AM.map count args
+ end
+
+ fun expOfArg (path, sqlify) =
+ let
+ val exp = expOfPath path
+ in
+ case sqlify of
+ NONE => exp
+ | SOME (m, x, typ) => (EFfiApp (m, x, [(exp, typ)]), dummyLoc)
+ end
+
+ fun orderArgs (qs : t, exp) =
+ let
+ val paths = freePaths exp
+ fun erel n = (ERel n, dummyLoc)
+ val argsMap = sqlArgsMap qs
+ val args = map (expOfArg o #1) (AM.listItemsi argsMap)
+ val invalPaths = List.foldl PS.union PS.empty (map freePaths args)
+ (* TODO: make sure these variables are okay to remove from the argument list. *)
+ val pureArgs = PS.difference (paths, invalPaths)
+ val shouldCache =
+ case getHeuristic () of
+ Smart =>
+ (case (qs, PS.numItems pureArgs) of
+ ((q::qs), 0) =>
+ let
+ val args = sqlArgsSet q
+ val argss = map sqlArgsSet qs
+ fun test (args, acc) =
+ acc
+ <\obind\>
+ (fn args' =>
+ let
+ val both = AS.union (args, args')
+ in
+ (AS.numItems args = AS.numItems both
+ orelse AS.numItems args' = AS.numItems both)
+ <\oguard\>
+ (fn _ => SOME both)
+ end)
+ in
+ case List.foldl test (SOME args) argss of
+ NONE => false
+ | SOME _ => true
+ end
+ | _ => false)
+ | Always => true
+ | Never => (case qs of [_] => PS.numItems pureArgs = 0 | _ => false)
+ | NoPureAll => (case qs of [] => false | _ => true)
+ | NoPureOne => (case qs of [] => false | _ => PS.numItems pureArgs = 0)
+ | NoCombo => PS.numItems pureArgs = 0 orelse AM.numItems argsMap = 0
+ in
+ (* Put arguments we might invalidate by first. *)
+ if shouldCache
+ then SOME (map AsIs args @ map (Urlify o expOfPath) (PS.listItems pureArgs))
+ else NONE
+ end
+
+ (* As a kludge, we rename the variables in the query to correspond to the
+ argument of the cache they're part of. *)
+ fun query (qs : t) =
+ let
+ val argsMap = sqlArgsMap qs
+ fun substitute subst =
+ fn ERel n => IM.find (subst, n)
+ <\obind\>
+ (fn arg =>
+ AM.find (argsMap, arg)
+ <\obind\>
+ (fn n' => SOME (ERel n')))
+ | _ => raise Fail "Sqlcache: query (a)"
+ in
+ case (map #1 qs) of
+ (q :: qs) =>
+ let
+ val q = List.foldl Sql.Union q qs
+ val ns = IS.listItems (varsOfQuery q)
+ val rename =
+ fn ERel n => omap ERel (indexOf (fn n' => n' = n) ns)
+ | _ => raise Fail "Sqlcache: query (b)"
+ in
+ case omapQuery rename q of
+ SOME q => q
+ (* We should never get NONE because indexOf should never fail. *)
+ | NONE => raise Fail "Sqlcache: query (c)"
+ end
+ (* We should never reach this case because [updateState] won't
+ put anything in the state if there are no queries. *)
+ | [] => raise Fail "Sqlcache: query (d)"
+ end
+
+ val argOfExp =
+ let
+ fun doFields acc exp =
+ acc
+ <\obind\>
+ (fn (fs, sqlify) =>
+ case #1 exp of
+ ERel n => SOME (n, fs, sqlify)
+ | EField (exp, f) => doFields (SOME (f::fs, sqlify)) exp
+ | _ => NONE)
+ in
+ fn (EFfiApp ("Basis", x, [(exp, typ)]), _) =>
+ if String.isPrefix "sqlify" x
+ then omap (fn path => (path, SOME ("Basis", x, typ))) (pathOfExp exp)
+ else NONE
+ | exp => omap (fn path => (path, NONE)) (pathOfExp exp)
+ end
+
+ val unbind1 =
+ fn Known e =>
+ let
+ val replacement = argOfExp e
+ in
+ omapSubst (fn 0 => replacement
+ | n => SOME ((n-1, []), NONE))
+ end
+ | Unknowns k => omapSubst (fn n => if n < k then NONE else SOME ((n-k, []), NONE))
+
+ fun unbind (qs, ub) =
+ case ub of
+ (* Shortcut if nothing's changing. *)
+ Unknowns 0 => SOME qs
+ | _ => osequence (map (fn (q, subst) => unbind1 ub subst
+ <\obind\>
+ (fn subst' => SOME (q, subst'))) qs)
+
+ fun updateState (qs, numArgs, state as {index, ...} : state) =
+ {tableToIndices = List.foldr (fn ((q, _), acc) =>
+ SS.foldl (fn (tab, acc) =>
+ SIMM.insert (acc, tab, index))
+ acc
+ (tablesOfQuery q))
+ (#tableToIndices state)
+ qs,
+ indexToInvalInfo = IM.insert (#indexToInvalInfo state, index, (qs, numArgs)),
+ ffiInfo = {index = index, params = numArgs} :: #ffiInfo state,
+ index = index + 1}
+
+end
+
+structure UF = UnionFindFn(AtomExpKey)
+
+val rec sqexpToFormula =
+ fn Sql.SqTrue => Combo (Conj, [])
+ | Sql.SqFalse => Combo (Disj, [])
+ | Sql.SqNot e => Negate (sqexpToFormula e)
+ | Sql.Binop (Sql.RCmp c, e1, e2) => Atom (c, e1, e2)
+ | Sql.Binop (Sql.RLop l, p1, p2) => Combo (case l of Sql.And => Conj | Sql.Or => Disj,
+ [sqexpToFormula p1, sqexpToFormula p2])
+ | e as Sql.Field f => Atom (Sql.Eq, e, Sql.SqTrue)
+ (* ASK: any other sqexps that can be props? *)
+ | Sql.SqConst prim =>
+ (case prim of
+ (Prim.String (Prim.Normal, s)) =>
+ if s = #trueString (Settings.currentDbms ())
+ then Combo (Conj, [])
+ else if s = #falseString (Settings.currentDbms ())
+ then Combo (Disj, [])
+ else raise Fail "Sqlcache: sqexpToFormula (SqConst a)"
+ | _ => raise Fail "Sqlcache: sqexpToFormula (SqConst b)")
+ | Sql.Computed _ => raise Fail "Sqlcache: sqexpToFormula (Computed)"
+ | Sql.SqKnown _ => raise Fail "Sqlcache: sqexpToFormula (SqKnown)"
+ | Sql.Inj _ => raise Fail "Sqlcache: sqexpToFormula (Inj)"
+ | Sql.SqFunc _ => raise Fail "Sqlcache: sqexpToFormula (SqFunc)"
+ | Sql.Unmodeled => raise Fail "Sqlcache: sqexpToFormula (Unmodeled)"
+ | Sql.Null => raise Fail "Sqlcache: sqexpToFormula (Null)"
+
+fun mapSqexpFields f =
+ fn Sql.Field (t, v) => f (t, v)
+ | Sql.SqNot e => Sql.SqNot (mapSqexpFields f e)
+ | Sql.Binop (r, e1, e2) => Sql.Binop (r, mapSqexpFields f e1, mapSqexpFields f e2)
+ | Sql.SqKnown e => Sql.SqKnown (mapSqexpFields f e)
+ | Sql.SqFunc (s, e) => Sql.SqFunc (s, mapSqexpFields f e)
+ | e => e
+
+fun renameTables tablePairs =
+ let
+ fun rename table =
+ case List.find (fn (_, t) => table = t) tablePairs of
+ NONE => table
+ | SOME (realTable, _) => realTable
+ in
+ mapSqexpFields (fn (t, f) => Sql.Field (rename t, f))
+ end
+
+structure FlattenQuery = struct
+
+ datatype substitution = RenameTable of string | SubstituteExp of Sql.sqexp SM.map
+
+ fun applySubst substTable =
+ let
+ fun substitute (table, field) =
+ case SM.find (substTable, table) of
+ NONE => Sql.Field (table, field)
+ | SOME (RenameTable realTable) => Sql.Field (realTable, field)
+ | SOME (SubstituteExp substField) =>
+ case SM.find (substField, field) of
+ NONE => raise Fail "Sqlcache: applySubst"
+ | SOME se => se
+ in
+ mapSqexpFields substitute
+ end
+
+ fun addToSubst (substTable, table, substField) =
+ SM.insert (substTable,
+ table,
+ case substField of
+ RenameTable _ => substField
+ | SubstituteExp subst => SubstituteExp (SM.map (applySubst substTable) subst))
+
+ fun newSubst (t, s) = addToSubst (SM.empty, t, s)
+
+ datatype sitem' = Named of Sql.sqexp * string | Unnamed of Sql.sqexp
+
+ type queryFlat = {Select : sitem' list, Where : Sql.sqexp}
+
+ val sitemsToSubst =
+ List.foldl (fn (Named (se, s), acc) => SM.insert (acc, s, se)
+ | (Unnamed _, _) => raise Fail "Sqlcache: sitemsToSubst")
+ SM.empty
+
+ fun unionSubst (s1, s2) = SM.unionWith (fn _ => raise Fail "Sqlcache: unionSubst") (s1, s2)
+
+ fun sqlAnd (se1, se2) = Sql.Binop (Sql.RLop Sql.And, se1, se2)
+
+ val rec flattenFitem : Sql.fitem -> (Sql.sqexp * substitution SM.map) list =
+ fn Sql.Table (real, alias) => [(Sql.SqTrue, newSubst (alias, RenameTable real))]
+ | Sql.Nested (q, s) =>
+ let
+ val qfs = flattenQuery q
+ in
+ map (fn (qf, subst) =>
+ (#Where qf, addToSubst (subst, s, SubstituteExp (sitemsToSubst (#Select qf)))))
+ qfs
+ end
+ | Sql.Join (jt, fi1, fi2, se) =>
+ concatMap (fn ((wher1, subst1)) =>
+ map (fn (wher2, subst2) =>
+ let
+ val subst = unionSubst (subst1, subst2)
+ in
+ (* ON clause becomes part of the accumulated WHERE. *)
+ (sqlAnd (sqlAnd (wher1, wher2), applySubst subst se), subst)
+ end)
+ (flattenFitem fi2))
+ (flattenFitem fi1)
+
+ and flattenQuery : Sql.query -> (queryFlat * substitution SM.map) list =
+ fn Sql.Query1 q =>
+ let
+ val fifss = cartesianProduct (map flattenFitem (#From q))
+ in
+ map (fn fifs =>
+ let
+ val subst = List.foldl (fn ((_, subst), acc) => unionSubst (acc, subst))
+ SM.empty
+ fifs
+ val wher = List.foldr (fn ((wher, _), acc) => sqlAnd (wher, acc))
+ (case #Where q of
+ NONE => Sql.SqTrue
+ | SOME wher => wher)
+ fifs
+ in
+ (* ASK: do we actually need to pass the substitution through here? *)
+ (* We use the substitution later, but it's not clear we
+ need any of its currently present fields again. *)
+ ({Select = map (fn Sql.SqExp (se, s) => Named (applySubst subst se, s)
+ | Sql.SqField tf =>
+ Unnamed (applySubst subst (Sql.Field tf)))
+ (#Select q),
+ Where = applySubst subst wher},
+ subst)
+ end)
+ fifss
+ end
+ | Sql.Union (q1, q2) => (flattenQuery q1) @ (flattenQuery q2)
+
+end
+
+val flattenQuery = map #1 o FlattenQuery.flattenQuery
+
+fun queryFlatToFormula marker {Select = sitems, Where = wher} =
+ let
+ val fWhere = sqexpToFormula wher
+ in
+ case marker of
+ NONE => fWhere
+ | SOME markFields =>
+ let
+ val fWhereMarked = mapFormulaExps markFields fWhere
+ val toSqexp =
+ fn FlattenQuery.Named (se, _) => se
+ | FlattenQuery.Unnamed se => se
+ fun ineq se = Atom (Sql.Ne, se, markFields se)
+ val fIneqs = Combo (Disj, map (ineq o toSqexp) sitems)
+ in
+ (Combo (Conj,
+ [fWhere,
+ Combo (Disj,
+ [Negate fWhereMarked,
+ Combo (Conj, [fWhereMarked, fIneqs])])]))
+ end
+ end
+
+fun queryToFormula marker q = Combo (Disj, map (queryFlatToFormula marker) (flattenQuery q))
+
+fun valsToFormula (markLeft, markRight) (table, vals) =
+ Combo (Conj,
+ map (fn (field, v) => Atom (Sql.Eq, markLeft (Sql.Field (table, field)), markRight v))
+ vals)
+
+(* TODO: verify logic for insertion and deletion. *)
+val rec dmlToFormulaMarker =
+ fn Sql.Insert (table, vals) => (valsToFormula (id, id) (table, vals), NONE)
+ | Sql.Delete (table, wher) => (sqexpToFormula (renameTables [(table, "T")] wher), NONE)
+ | Sql.Update (table, vals, wher) =>
+ let
+ val fWhere = sqexpToFormula (renameTables [(table, "T")] wher)
+ fun fVals marks = valsToFormula marks (table, vals)
+ val modifiedFields = SS.addList (SS.empty, map #1 vals)
+ (* TODO: don't use field name hack. *)
+ val markFields =
+ mapSqexpFields (fn (t, v) => if t = table andalso SS.member (modifiedFields, v)
+ then Sql.Field (t, v ^ "'")
+ else Sql.Field (t, v))
+ val mark = mapFormulaExps markFields
+ in
+ ((Combo (Disj, [Combo (Conj, [fVals (id, markFields), mark fWhere]),
+ Combo (Conj, [fVals (markFields, id), fWhere])])),
+ SOME markFields)
+ end
+
+fun pairToFormulas (query, dml) =
+ let
+ val (fDml, marker) = dmlToFormulaMarker dml
+ in
+ (queryToFormula marker query, fDml)
+ end
+
+structure ConflictMaps = struct
+
+ structure TK = TripleKeyFn(structure I = CmpKey
+ structure J = AtomOptionKey
+ structure K = AtomOptionKey)
+
+ structure TS : ORD_SET = BinarySetFn(TK)
+
+ val toKnownEquality =
+ (* [NONE] here means unkown. Anything that isn't a comparison between two
+ knowns shouldn't be used, and simply dropping unused terms is okay in
+ disjunctive normal form. *)
+ fn (Sql.Eq, SOME e1, SOME e2) => SOME (e1, e2)
+ | _ => NONE
+
+ fun equivClasses atoms : atomExp list list option =
+ let
+ val uf = List.foldl UF.union' UF.empty (List.mapPartial toKnownEquality atoms)
+ val contradiction =
+ fn (cmp, SOME ae1, SOME ae2) => (cmp = Sql.Ne orelse cmp = Sql.Lt orelse cmp = Sql.Gt)
+ andalso UF.together (uf, ae1, ae2)
+ (* If we don't know one side of the comparision, not a contradiction. *)
+ | _ => false
+ in
+ not (List.exists contradiction atoms) <\oguard\> (fn _ => SOME (UF.classes uf))
+ end
+
+ fun addToEqs (eqs, n, e) =
+ case IM.find (eqs, n) of
+ (* Comparing to a constant is probably better than comparing to a
+ variable? Checking that existing constants match a new ones is
+ handled by [accumulateEqs]. *)
+ SOME (Prim _) => eqs
+ | _ => IM.insert (eqs, n, e)
+
+ val accumulateEqs =
+ (* [NONE] means we have a contradiction. *)
+ fn (_, NONE) => NONE
+ | ((Prim p1, Prim p2), eqso) =>
+ (case Prim.compare (p1, p2) of
+ EQUAL => eqso
+ | _ => NONE)
+ | ((QueryArg n, Prim p), SOME eqs) => SOME (addToEqs (eqs, n, Prim p))
+ | ((QueryArg n, DmlRel r), SOME eqs) => SOME (addToEqs (eqs, n, DmlRel r))
+ | ((Prim p, QueryArg n), SOME eqs) => SOME (addToEqs (eqs, n, Prim p))
+ | ((DmlRel r, QueryArg n), SOME eqs) => SOME (addToEqs (eqs, n, DmlRel r))
+ (* TODO: deal with equalities between [DmlRel]s and [Prim]s.
+ This would involve guarding the invalidation with a check for the
+ relevant comparisons. *)
+ | (_, eqso) => eqso
+
+ val eqsOfClass : atomExp list -> atomExp IM.map option =
+ List.foldl accumulateEqs (SOME IM.empty)
+ o chooseTwos
+
+ fun toAtomExps rel (cmp, e1, e2) =
+ let
+ val qa =
+ (* Here [NONE] means unkown. *)
+ fn Sql.SqConst p => SOME (Prim p)
+ | Sql.Field tf => SOME (Field tf)
+ | Sql.Inj (EPrim p, _) => SOME (Prim p)
+ | Sql.Inj (ERel n, _) => SOME (rel n)
+ (* We can't deal with anything else, e.g., CURRENT_TIMESTAMP
+ becomes Sql.Unmodeled, which becomes NONE here. *)
+ | _ => NONE
+ in
+ (cmp, qa e1, qa e2)
+ end
+
+ val negateCmp =
+ fn Sql.Eq => Sql.Ne
+ | Sql.Ne => Sql.Eq
+ | Sql.Lt => Sql.Ge
+ | Sql.Le => Sql.Gt
+ | Sql.Gt => Sql.Le
+ | Sql.Ge => Sql.Lt
+
+ fun normalizeAtom (negating, (cmp, e1, e2)) =
+ (* Restricting to Le/Lt and sorting the expressions in Eq/Ne helps with
+ simplification, where we put the triples in sets. *)
+ case (if negating then negateCmp cmp else cmp) of
+ Sql.Eq => (case AtomOptionKey.compare (e1, e2) of
+ LESS => (Sql.Eq, e2, e1)
+ | _ => (Sql.Eq, e1, e2))
+ | Sql.Ne => (case AtomOptionKey.compare (e1, e2) of
+ LESS => (Sql.Ne, e2, e1)
+ | _ => (Sql.Ne, e1, e2))
+ | Sql.Lt => (Sql.Lt, e1, e2)
+ | Sql.Le => (Sql.Le, e1, e2)
+ | Sql.Gt => (Sql.Lt, e2, e1)
+ | Sql.Ge => (Sql.Le, e2, e1)
+
+ val markQuery : (Sql.cmp * Sql.sqexp * Sql.sqexp) formula ->
+ (Sql.cmp * atomExp option * atomExp option) formula =
+ mapFormula (toAtomExps QueryArg)
+
+ val markDml : (Sql.cmp * Sql.sqexp * Sql.sqexp) formula ->
+ (Sql.cmp * atomExp option * atomExp option) formula =
+ mapFormula (toAtomExps DmlRel)
+
+ (* No eqs should have key conflicts because no variable is in two
+ equivalence classes. *)
+ val mergeEqs : (atomExp IntBinaryMap.map option list
+ -> atomExp IntBinaryMap.map option) =
+ List.foldr (omap2 (IM.unionWith (fn _ => raise Fail "Sqlcache: ConflictMaps.mergeEqs")))
+ (SOME IM.empty)
+
+ val simplify =
+ map TS.listItems
+ o removeRedundant (fn (x, y) => TS.isSubset (y, x))
+ o map (fn xs => TS.addList (TS.empty, xs))
+
+ fun dnf (fQuery, fDml) =
+ normalize simplify normalizeAtom Disj (Combo (Conj, [markQuery fQuery, markDml fDml]))
+
+ val conflictMaps =
+ List.mapPartial (mergeEqs o map eqsOfClass)
+ o List.mapPartial equivClasses
+ o dnf
+
+end
+
+val conflictMaps = ConflictMaps.conflictMaps
+
+
+(*************************************)
+(* Program Instrumentation Utilities *)
+(*************************************)
+
+val {check, store, flush, lock, ...} = getCache ()
+
+val dummyTyp = (TRecord [], dummyLoc)
+
+fun stringExp s = (EPrim (Prim.String (Prim.Normal, s)), dummyLoc)
+
+val stringTyp = (TFfi ("Basis", "string"), dummyLoc)
+
+val sequence =
+ fn (exp :: exps) =>
+ let
+ val loc = dummyLoc
+ in
+ List.foldl (fn (e', seq) => ESeq ((seq, loc), (e', loc))) exp exps
+ end
+ | _ => raise Fail "Sqlcache: sequence"
+
+(* Always increments negative indices as a hack we use later. *)
+fun incRels inc =
+ MonoUtil.Exp.mapB
+ {typ = fn t' => t',
+ exp = fn bound =>
+ (fn ERel n => ERel (if n >= bound orelse n < 0 then n + inc else n)
+ | e' => e'),
+ bind = fn (bound, MonoUtil.Exp.RelE _) => bound + 1 | (bound, _) => bound}
+ 0
+
+fun fileTopLevelMapfoldB doTopLevelExp (decls, sideInfo) state =
+ let
+ fun doVal env ((x, n, t, exp, s), state) =
+ let
+ val (exp, state) = doTopLevelExp env exp state
+ in
+ ((x, n, t, exp, s), state)
+ end
+ fun doDecl' env (decl', state) =
+ case decl' of
+ DVal v =>
+ let
+ val (v, state) = doVal env (v, state)
+ in
+ (DVal v, state)
+ end
+ | DValRec vs =>
+ let
+ val (vs, state) = ListUtil.foldlMap (doVal env) state vs
+ in
+ (DValRec vs, state)
+ end
+ | _ => (decl', state)
+ fun doDecl (decl as (decl', loc), (env, state)) =
+ let
+ val env = MonoEnv.declBinds env decl
+ val (decl', state) = doDecl' env (decl', state)
+ in
+ ((decl', loc), (env, state))
+ end
+ val (decls, (_, state)) = (ListUtil.foldlMap doDecl (MonoEnv.empty, state) decls)
+ in
+ ((decls, sideInfo), state)
+ end
+
+fun fileAllMapfoldB doExp file start =
+ case MonoUtil.File.mapfoldB
+ {typ = Search.return2,
+ exp = fn env => fn e' => fn s => Search.Continue (doExp env e' s),
+ decl = fn _ => Search.return2,
+ bind = doBind}
+ MonoEnv.empty file start of
+ Search.Continue x => x
+ | Search.Return _ => raise Fail "Sqlcache: fileAllMapfoldB"
+
+fun fileMap doExp file = #1 (fileAllMapfoldB (fn _ => fn e => fn _ => (doExp e, ())) file ())
+
+(* TODO: make this a bit prettier.... *)
+(* TODO: factour out identical subexpressions to the same variable.... *)
+val simplifySql =
+ let
+ fun factorOutNontrivial text =
+ let
+ val loc = dummyLoc
+ val strcat =
+ fn (e1, (EPrim (Prim.String (Prim.Normal, "")), _)) => e1
+ | ((EPrim (Prim.String (Prim.Normal, "")), _), e2) => e2
+ | (e1, e2) => (EStrcat (e1, e2), loc)
+ val chunks = Sql.chunkify text
+ val (newText, newVariables) =
+ (* Important that this is foldr (to oppose foldl below). *)
+ List.foldr
+ (fn (chunk, (qText, newVars)) =>
+ (* Variable bound to the head of newVars will have the lowest index. *)
+ case chunk of
+ (* EPrim should always be a string in this case. *)
+ Sql.Exp (e as (EPrim _, _)) => (strcat (e, qText), newVars)
+ | Sql.Exp e =>
+ let
+ val n = length newVars
+ in
+ (* This is the (n+1)th new variable, so there are
+ already n new variables bound, so we increment
+ indices by n. *)
+ (strcat ((ERel (~(n+1)), loc), qText), incRels n e :: newVars)
+ end
+ | Sql.String s => (strcat (stringExp s, qText), newVars))
+ (stringExp "", [])
+ chunks
+ fun wrapLets e' =
+ (* Important that this is foldl (to oppose foldr above). *)
+ List.foldl (fn (v, e') => ELet ("sqlArg", stringTyp, v, (e', loc)))
+ e'
+ newVariables
+ val numArgs = length newVariables
+ in
+ (newText, wrapLets, numArgs)
+ end
+ fun doExp exp' =
+ let
+ val text = case exp' of
+ EQuery {query = text, ...} => text
+ | EDml (text, _) => text
+ | _ => raise Fail "Sqlcache: simplifySql (a)"
+ val (newText, wrapLets, numArgs) = factorOutNontrivial text
+ val newExp' = case exp' of
+ EQuery q => EQuery {query = newText,
+ exps = #exps q,
+ tables = #tables q,
+ state = #state q,
+ body = #body q,
+ initial = #initial q}
+ | EDml (_, failureMode) => EDml (newText, failureMode)
+ | _ => raise Fail "Sqlcache: simplifySql (b)"
+ in
+ (* Increment once for each new variable just made. This is
+ where we use the negative De Bruijn indices hack. *)
+ (* TODO: please don't use that hack. As anyone could have
+ predicted, it was incomprehensible a year later.... *)
+ wrapLets (#1 (incRels numArgs (newExp', dummyLoc)))
+ end
+ in
+ fileMap (fn exp' => case exp' of
+ EQuery _ => doExp exp'
+ | EDml _ => doExp exp'
+ | _ => exp')
+ end
+
+
+(**********************)
+(* Mono Type Checking *)
+(**********************)
+
+fun typOfExp' (env : MonoEnv.env) : exp' -> typ option =
+ fn EPrim p => SOME (TFfi ("Basis", case p of
+ Prim.Int _ => "int"
+ | Prim.Float _ => "double"
+ | Prim.String _ => "string"
+ | Prim.Char _ => "char"),
+ dummyLoc)
+ | ERel n => SOME (#2 (MonoEnv.lookupERel env n))
+ | ENamed n => SOME (#2 (MonoEnv.lookupENamed env n))
+ (* ASK: okay to make a new [ref] each time? *)
+ | ECon (dk, PConVar nCon, _) =>
+ let
+ val (_, _, nData) = MonoEnv.lookupConstructor env nCon
+ val (_, cs) = MonoEnv.lookupDatatype env nData
+ in
+ SOME (TDatatype (nData, ref (dk, cs)), dummyLoc)
+ end
+ | ECon (_, PConFfi {mod = s, datatyp, ...}, _) => SOME (TFfi (s, datatyp), dummyLoc)
+ | ENone t => SOME (TOption t, dummyLoc)
+ | ESome (t, _) => SOME (TOption t, dummyLoc)
+ | EFfi _ => NONE
+ | EFfiApp _ => NONE
+ | EApp (e1, e2) => (case typOfExp env e1 of
+ SOME (TFun (_, t), _) => SOME t
+ | _ => NONE)
+ | EAbs (_, t1, t2, _) => SOME (TFun (t1, t2), dummyLoc)
+ (* ASK: is this right? *)
+ | EUnop (unop, e) => (case unop of
+ "!" => SOME (TFfi ("Basis", "bool"), dummyLoc)
+ | "-" => typOfExp env e
+ | _ => NONE)
+ (* ASK: how should this (and other "=> NONE" cases) work? *)
+ | EBinop _ => NONE
+ | ERecord fields => SOME (TRecord (map (fn (s, _, t) => (s, t)) fields), dummyLoc)
+ | EField (e, s) => (case typOfExp env e of
+ SOME (TRecord fields, _) =>
+ omap #2 (List.find (fn (s', _) => s = s') fields)
+ | _ => NONE)
+ | ECase (_, _, {result, ...}) => SOME result
+ | EStrcat _ => SOME (TFfi ("Basis", "string"), dummyLoc)
+ | EWrite _ => SOME (TRecord [], dummyLoc)
+ | ESeq (_, e) => typOfExp env e
+ | ELet (s, t, e1, e2) => typOfExp (MonoEnv.pushERel env s t (SOME e1)) e2
+ | EClosure _ => NONE
+ | EUnurlify (_, t, _) => SOME t
+ | EQuery {state, ...} => SOME state
+ | e => NONE
+
+and typOfExp env (e', loc) = typOfExp' env e'
+
+
+(***********)
+(* Caching *)
+(***********)
+
+type state = InvalInfo.state
+
+datatype subexp = Cachable of InvalInfo.t * (state -> exp * state) | Impure of exp
+
+val isImpure =
+ fn Cachable _ => false
+ | Impure _ => true
+
+val runSubexp : subexp * state -> exp * state =
+ fn (Cachable (_, f), state) => f state
+ | (Impure e, state) => (e, state)
+
+val invalInfoOfSubexp =
+ fn Cachable (invalInfo, _) => invalInfo
+ | Impure _ => raise Fail "Sqlcache: invalInfoOfSubexp"
+
+fun cacheWrap (env, exp, typ, args, index) =
+ let
+ val loc = dummyLoc
+ val rel0 = (ERel 0, loc)
+ in
+ case MonoFooify.urlify env (rel0, typ) of
+ NONE => NONE
+ | SOME urlified =>
+ let
+ (* We ensure before this step that all arguments aren't effectful.
+ by turning them into local variables as needed. *)
+ val argsInc = map (incRels 1) args
+ val check = (check (index, args), loc)
+ val store = (store (index, argsInc, urlified), loc)
+ in
+ SOME (ECase (check,
+ [((PNone stringTyp, loc),
+ (ELet ("q", typ, exp, (ESeq (store, rel0), loc)), loc)),
+ ((PSome (stringTyp, (PVar ("hit", stringTyp), loc)), loc),
+ (* Boolean is false because we're not unurlifying from a cookie. *)
+ (EUnurlify (rel0, typ, false), loc))],
+ {disc = (TOption stringTyp, loc), result = typ}))
+ end
+ end
+
+val expSize = MonoUtil.Exp.fold {typ = #2, exp = fn (_, n) => n+1} 0
+
+(* TODO: pick a number. *)
+val sizeWorthCaching = 5
+
+val worthCaching =
+ fn EQuery _ => true
+ | exp' => expSize (exp', dummyLoc) > sizeWorthCaching
+
+fun cacheExp (env, exp', invalInfo, state : state) =
+ case worthCaching exp' <\oguard\> (fn _ => typOfExp' env exp') of
+ NONE => NONE
+ | SOME (TFun _, _) => NONE
+ | SOME typ =>
+ InvalInfo.orderArgs (invalInfo, (exp', dummyLoc))
+ <\obind\>
+ (fn args =>
+ List.foldr (fn (arg, acc) =>
+ acc
+ <\obind\>
+ (fn args' =>
+ (case arg of
+ AsIs exp => SOME exp
+ | Urlify exp =>
+ typOfExp env exp
+ <\obind\>
+ (fn typ => (MonoFooify.urlify env (exp, typ))))
+ <\obind\>
+ (fn arg' => SOME (arg' :: args'))))
+ (SOME [])
+ args
+ <\obind\>
+ (fn args' =>
+ cacheWrap (env, (exp', dummyLoc), typ, args', #index state)
+ <\obind\>
+ (fn cachedExp =>
+ SOME (cachedExp,
+ InvalInfo.updateState (invalInfo, length args', state)))))
+
+fun cacheQuery (effs, env, q) : subexp =
+ let
+ (* We use dummyTyp here. I think this is okay because databases don't
+ store (effectful) functions, but perhaps there's some pathalogical
+ corner case missing.... *)
+ fun safe bound =
+ not
+ o effectful effs
+ (iterate (fn env => MonoEnv.pushERel env "_" dummyTyp NONE)
+ bound
+ env)
+ val {query = queryText, initial, body, ...} = q
+ val attempt =
+ (* Ziv misses Haskell's do notation.... *)
+ (safe 0 queryText andalso safe 0 initial andalso safe 2 body)
+ <\oguard\>
+ (fn _ =>
+ Sql.parse Sql.query queryText
+ <\obind\>
+ (fn queryParsed =>
+ let
+ val invalInfo = InvalInfo.singleton queryParsed
+ fun mkExp state =
+ case cacheExp (env, EQuery q, invalInfo, state) of
+ NONE => ((EQuery q, dummyLoc), state)
+ | SOME (cachedExp, state) => ((cachedExp, dummyLoc), state)
+ in
+ SOME (Cachable (invalInfo, mkExp))
+ end))
+ in
+ case attempt of
+ NONE => Impure (EQuery q, dummyLoc)
+ | SOME subexp => subexp
+ end
+
+fun cacheTree (effs : IS.set) ((env, exp as (exp', loc)), state) =
+ let
+ fun wrapBindN (f : exp list -> exp')
+ (args : ((MonoEnv.env * exp) * unbind) list) =
+ let
+ val (subexps, state) =
+ ListUtil.foldlMap (cacheTree effs)
+ state
+ (map #1 args)
+ fun mkExp state = mapFst (fn exps => (f exps, loc))
+ (ListUtil.foldlMap runSubexp state subexps)
+ val attempt =
+ if List.exists isImpure subexps
+ then NONE
+ else (List.foldl (omap2 InvalInfo.union)
+ (SOME InvalInfo.empty)
+ (ListPair.map
+ (fn (subexp, (_, unbinds)) =>
+ InvalInfo.unbind (invalInfoOfSubexp subexp, unbinds))
+ (subexps, args)))
+ <\obind\>
+ (fn invalInfo =>
+ SOME (Cachable (invalInfo,
+ fn state =>
+ case cacheExp (env,
+ f (map (#2 o #1) args),
+ invalInfo,
+ state) of
+ NONE => mkExp state
+ | SOME (e', state) => ((e', loc), state)),
+ state))
+ in
+ case attempt of
+ SOME (subexp, state) => (subexp, state)
+ | NONE => mapFst Impure (mkExp state)
+ end
+ fun wrapBind1 f arg =
+ wrapBindN (fn [arg] => f arg
+ | _ => raise Fail "Sqlcache: cacheTree (a)") [arg]
+ fun wrapBind2 f (arg1, arg2) =
+ wrapBindN (fn [arg1, arg2] => f (arg1, arg2)
+ | _ => raise Fail "Sqlcache: cacheTree (b)") [arg1, arg2]
+ fun wrapN f es = wrapBindN f (map (fn e => ((env, e), Unknowns 0)) es)
+ fun wrap1 f e = wrapBind1 f ((env, e), Unknowns 0)
+ fun wrap2 f (e1, e2) = wrapBind2 f (((env, e1), Unknowns 0), ((env, e2), Unknowns 0))
+ in
+ case exp' of
+ ECon (dk, pc, SOME e) => wrap1 (fn e => ECon (dk, pc, SOME e)) e
+ | ESome (t, e) => wrap1 (fn e => ESome (t, e)) e
+ | EFfiApp (s1, s2, args) =>
+ if ffiEffectful (s1, s2)
+ then (Impure exp, state)
+ else wrapN (fn es =>
+ EFfiApp (s1, s2, ListPair.map (fn (e, (_, t)) => (e, t)) (es, args)))
+ (map #1 args)
+ | EApp (e1, e2) => wrap2 EApp (e1, e2)
+ | EAbs (s, t1, t2, e) =>
+ wrapBind1 (fn e => EAbs (s, t1, t2, e))
+ ((MonoEnv.pushERel env s t1 NONE, e), Unknowns 1)
+ | EUnop (s, e) => wrap1 (fn e => EUnop (s, e)) e
+ | EBinop (bi, s, e1, e2) => wrap2 (fn (e1, e2) => EBinop (bi, s, e1, e2)) (e1, e2)
+ | ERecord fields =>
+ wrapN (fn es => ERecord (ListPair.map (fn (e, (s, _, t)) => (s, e, t)) (es, fields)))
+ (map #2 fields)
+ | EField (e, s) => wrap1 (fn e => EField (e, s)) e
+ | ECase (e, cases, {disc, result}) =>
+ wrapBindN (fn (e::es) =>
+ ECase (e,
+ (ListPair.map (fn (e, (p, _)) => (p, e)) (es, cases)),
+ {disc = disc, result = result})
+ | _ => raise Fail "Sqlcache: cacheTree (c)")
+ (((env, e), Unknowns 0)
+ :: map (fn (p, e) =>
+ ((MonoEnv.patBinds env p, e), Unknowns (MonoEnv.patBindsN p)))
+ cases)
+ | EStrcat (e1, e2) => wrap2 EStrcat (e1, e2)
+ (* We record page writes, so they're cachable. *)
+ | EWrite e => wrap1 EWrite e
+ | ESeq (e1, e2) => wrap2 ESeq (e1, e2)
+ | ELet (s, t, e1, e2) =>
+ wrapBind2 (fn (e1, e2) => ELet (s, t, e1, e2))
+ (((env, e1), Unknowns 0),
+ ((MonoEnv.pushERel env s t (SOME e1), e2), Known e1))
+ (* ASK: | EClosure (n, es) => ? *)
+ | EUnurlify (e, t, b) => wrap1 (fn e => EUnurlify (e, t, b)) e
+ | EQuery q => (cacheQuery (effs, env, q), state)
+ | _ => (if effectful effs env exp
+ then Impure exp
+ else Cachable (InvalInfo.empty,
+ fn state =>
+ case cacheExp (env, exp', InvalInfo.empty, state) of
+ NONE => ((exp', loc), state)
+ | SOME (exp', state) => ((exp', loc), state)),
+ state)
+ end
+
+fun addCaching file =
+ let
+ val effs = effectfulDecls file
+ fun doTopLevelExp env exp state = runSubexp (cacheTree effs ((env, exp), state))
+ in
+ (fileTopLevelMapfoldB doTopLevelExp
+ file
+ {tableToIndices = SIMM.empty,
+ indexToInvalInfo = IM.empty,
+ ffiInfo = [],
+ index = 0},
+ effs)
+ end
+
+
+(************)
+(* Flushing *)
+(************)
+
+structure Invalidations = struct
+
+ val loc = dummyLoc
+
+ val optionAtomExpToExp =
+ fn NONE => (ENone stringTyp, loc)
+ | SOME e => (ESome (stringTyp,
+ (case e of
+ DmlRel n => ERel n
+ | Prim p => EPrim p
+ (* TODO: make new type containing only these two. *)
+ | _ => raise Fail "Sqlcache: Invalidations.optionAtomExpToExp",
+ loc)),
+ loc)
+
+ fun eqsToInvalidation numArgs eqs =
+ List.tabulate (numArgs, (fn n => IM.find (eqs, n)))
+
+ (* Tests if [ys] makes [xs] a redundant cache invalidation. [NONE] here
+ represents unknown, which means a wider invalidation. *)
+ val rec madeRedundantBy : atomExp option list * atomExp option list -> bool =
+ fn ([], []) => true
+ | (_ :: xs, NONE :: ys) => madeRedundantBy (xs, ys)
+ | (SOME x :: xs, SOME y :: ys) => (case AtomExpKey.compare (x, y) of
+ EQUAL => madeRedundantBy (xs, ys)
+ | _ => false)
+ | _ => false
+
+ fun invalidations ((invalInfo, numArgs), dml) =
+ let
+ val query = InvalInfo.query invalInfo
+ in
+ (map (map optionAtomExpToExp)
+ o removeRedundant madeRedundantBy
+ o map (eqsToInvalidation numArgs)
+ o conflictMaps)
+ (pairToFormulas (query, dml))
+ end
+
+end
+
+val invalidations = Invalidations.invalidations
+
+fun addFlushing ((file, {tableToIndices, indexToInvalInfo, ffiInfo, ...} : state), effs) =
+ let
+ val flushes = List.concat
+ o map (fn (i, argss) => map (fn args => flush (i, args)) argss)
+ val doExp =
+ fn dmlExp as EDml (dmlText, failureMode) =>
+ let
+ val inval =
+ case Sql.parse Sql.dml dmlText of
+ SOME dmlParsed =>
+ SOME (map (fn i => (case IM.find (indexToInvalInfo, i) of
+ SOME invalInfo =>
+ (i, invalidations (invalInfo, dmlParsed))
+ (* TODO: fail more gracefully. *)
+ (* This probably means invalidating everything.... *)
+ | NONE => raise Fail "Sqlcache: addFlushing (a)"))
+ (SIMM.findList (tableToIndices, tableOfDml dmlParsed)))
+ | NONE => NONE
+ in
+ case inval of
+ (* TODO: fail more gracefully. *)
+ NONE => raise Fail "Sqlcache: addFlushing (b)"
+ | SOME invs => sequence (flushes invs @ [dmlExp])
+ end
+ | e' => e'
+ val file = fileMap doExp file
+
+ in
+ ffiInfoRef := ffiInfo;
+ file
+ end
+
+
+(***********)
+(* Locking *)
+(***********)
+
+(* TODO: do this less evilly by not relying on specific FFI names, please? *)
+fun locksNeeded (lockMap : {store : IIMM.multimap, flush : IIMM.multimap}) =
+ MonoUtil.Exp.fold
+ {typ = #2,
+ exp = fn (EFfiApp ("Sqlcache", x, _), state as {store, flush}) =>
+ (case Int.fromString (String.extract (x, 5, NONE)) of
+ NONE => state
+ | SOME index =>
+ if String.isPrefix "flush" x
+ then {store = store, flush = IS.add (flush, index)}
+ else if String.isPrefix "store" x
+ then {store = IS.add (store, index), flush = flush}
+ else state)
+ | (ENamed n, {store, flush}) =>
+ {store = IS.union (store, IIMM.findSet (#store lockMap, n)),
+ flush = IS.union (flush, IIMM.findSet (#flush lockMap, n))}
+ | (_, state) => state}
+ {store = IS.empty, flush = IS.empty}
+
+fun lockMapOfFile file =
+ transitiveAnalysis
+ (fn ((_, name, _, e, _), state) =>
+ let
+ val locks = locksNeeded state e
+ in
+ {store = IIMM.insertSet (#store state, name, #store locks),
+ flush = IIMM.insertSet (#flush state, name, #flush locks)}
+ end)
+ {store = IIMM.empty, flush = IIMM.empty}
+ file
+
+fun exports (decls, _) =
+ List.foldl (fn ((DExport (_, _, n, _, _, _), _), ns) => IS.add (ns, n)
+ | (_, ns) => ns)
+ IS.empty
+ decls
+
+fun wrapLocks (locks, (exp', loc)) =
+ case exp' of
+ EAbs (s, t1, t2, exp) => (EAbs (s, t1, t2, wrapLocks (locks, exp)), loc)
+ | _ => (List.foldr (fn (l, e') => sequence [lock l, e']) exp' locks, loc)
+
+fun addLocking file =
+ let
+ val lockMap = lockMapOfFile file
+ fun lockList {store, flush} =
+ let
+ val ls = map (fn i => (i, true)) (IS.listItems flush)
+ @ map (fn i => (i, false)) (IS.listItems (IS.difference (store, flush)))
+ in
+ ListMergeSort.sort (fn ((i, _), (j, _)) => i > j) ls
+ end
+ fun locksOfName n =
+ lockList {flush = IIMM.findSet (#flush lockMap, n),
+ store = IIMM.findSet (#store lockMap, n)}
+ val locksOfExp = lockList o locksNeeded lockMap
+ val expts = exports file
+ fun doVal (v as (x, n, t, exp, s)) =
+ if IS.member (expts, n)
+ then (x, n, t, wrapLocks ((locksOfName n), exp), s)
+ else v
+ val doDecl =
+ fn (DVal v, loc) => (DVal (doVal v), loc)
+ | (DValRec vs, loc) => (DValRec (map doVal vs), loc)
+ | (DTask (exp1, exp2), loc) => (DTask (exp1, wrapLocks (locksOfExp exp2, exp2)), loc)
+ | decl => decl
+ in
+ mapFst (map doDecl) file
+ end
+
+
+(************************)
+(* Compiler Entry Point *)
+(************************)
+
+val inlineSql =
+ let
+ val doExp =
+ (* TODO: EQuery, too? *)
+ (* ASK: should this live in [MonoOpt]? *)
+ fn EDml ((ECase (disc, cases, {disc = dTyp, ...}), loc), failureMode) =>
+ let
+ val newCases = map (fn (p, e) => (p, (EDml (e, failureMode), loc))) cases
+ in
+ ECase (disc, newCases, {disc = dTyp, result = (TRecord [], loc)})
+ end
+ | e => e
+ in
+ fileMap doExp
+ end
+
+fun insertAfterDatatypes ((decls, sideInfo), newDecls) =
+ let
+ val (datatypes, others) = List.partition (fn (DDatatype _, _) => true | _ => false) decls
+ in
+ (datatypes @ newDecls @ others, sideInfo)
+ end
+
+val go' = addLocking o addFlushing o addCaching o simplifySql o inlineSql
+
+fun go file =
+ let
+ (* TODO: do something nicer than [Sql] being in one of two modes. *)
+ val () = (resetFfiInfo (); Sql.sqlcacheMode := true)
+ val file = go' file
+ (* Important that this happens after [MonoFooify.urlify] calls! *)
+ val fmDecls = MonoFooify.getNewFmDecls ()
+ val () = Sql.sqlcacheMode := false
+ in
+ insertAfterDatatypes (file, rev fmDecls)
+ end
+
+end
diff --git a/src/toy_cache.sml b/src/toy_cache.sml
new file mode 100644
index 00000000..5c5aa459
--- /dev/null
+++ b/src/toy_cache.sml
@@ -0,0 +1,207 @@
+structure ToyCache : sig
+ val cache : Cache.cache
+end = struct
+
+
+(* Mono *)
+
+open Mono
+
+val dummyLoc = ErrorMsg.dummySpan
+val stringTyp = (TFfi ("Basis", "string"), dummyLoc)
+val optionStringTyp = (TOption stringTyp, dummyLoc)
+fun withTyp typ = map (fn exp => (exp, typ))
+
+fun ffiAppCache' (func, index, argTyps) =
+ EFfiApp ("Sqlcache", func ^ Int.toString index, argTyps)
+
+fun check (index, keys) =
+ ffiAppCache' ("check", index, withTyp stringTyp keys)
+
+fun store (index, keys, value) =
+ ffiAppCache' ("store", index, (value, stringTyp) :: withTyp stringTyp keys)
+
+fun flush (index, keys) =
+ ffiAppCache' ("flush", index, withTyp optionStringTyp keys)
+
+fun lock (index, keys) =
+ raise Fail "ToyCache doesn't yet implement lock"
+
+
+(* Cjr *)
+
+open Print
+open Print.PD
+
+fun setupQuery {index, params} =
+ let
+
+ val i = Int.toString index
+
+ fun paramRepeat itemi sep =
+ let
+ fun f n =
+ if n < 0 then ""
+ else if n = 0 then itemi (Int.toString 0)
+ else f (n-1) ^ sep ^ itemi (Int.toString n)
+ in
+ f (params - 1)
+ end
+
+ fun paramRepeatInit itemi sep =
+ if params = 0 then "" else sep ^ paramRepeat itemi sep
+
+ val args = paramRepeatInit (fn p => "uw_Basis_string p" ^ p) ", "
+
+ val decls = paramRepeat (fn p => "uw_Basis_string param" ^ i ^ "_"
+ ^ p ^ " = NULL;")
+ "\n"
+
+ val sets = paramRepeat (fn p => "param" ^ i ^ "_" ^ p
+ ^ " = strdup(p" ^ p ^ ");")
+ "\n"
+
+ val frees = paramRepeat (fn p => "free(param" ^ i ^ "_" ^ p ^ ");")
+ "\n"
+
+ val eqs = paramRepeatInit (fn p => "strcmp(param" ^ i ^ "_" ^ p
+ ^ ", p" ^ p ^ ")")
+ " || "
+
+ (* Using [!=] instead of [==] to mimic [strcmp]. *)
+ val eqsNull = paramRepeatInit (fn p => "(p" ^ p ^ " == NULL || "
+ ^ "!strcmp(param" ^ i ^ "_"
+ ^ p ^ ", p" ^ p ^ "))")
+ " && "
+
+ in
+ Print.box
+ [string "static char *cacheQuery",
+ string i,
+ string " = NULL;",
+ newline,
+ string "static char *cacheWrite",
+ string i,
+ string " = NULL;",
+ newline,
+ string decls,
+ newline,
+ string "static uw_Basis_string uw_Sqlcache_check",
+ string i,
+ string "(uw_context ctx",
+ string args,
+ string ") {",
+ newline,
+ string "if (cacheWrite",
+ string i,
+ (* ASK: is returning the pointer okay? Should we duplicate? *)
+ string " == NULL",
+ string eqs,
+ string ") {",
+ newline,
+ string "puts(\"SQLCACHE: miss ",
+ string i,
+ string ".\");",
+ newline,
+ string "uw_recordingStart(ctx);",
+ newline,
+ string "return NULL;",
+ newline,
+ string "} else {",
+ newline,
+ string "puts(\"SQLCACHE: hit ",
+ string i,
+ string ".\");",
+ newline,
+ string " if (cacheWrite",
+ string i,
+ string " != NULL) { uw_write(ctx, cacheWrite",
+ string i,
+ string "); }",
+ newline,
+ string "return cacheQuery",
+ string i,
+ string ";",
+ newline,
+ string "} };",
+ newline,
+ string "static uw_unit uw_Sqlcache_store",
+ string i,
+ string "(uw_context ctx, uw_Basis_string s",
+ string args,
+ string ") {",
+ newline,
+ string "free(cacheQuery",
+ string i,
+ string "); free(cacheWrite",
+ string i,
+ string ");",
+ newline,
+ string frees,
+ newline,
+ string "cacheQuery",
+ string i,
+ string " = strdup(s); cacheWrite",
+ string i,
+ string " = uw_recordingRead(ctx);",
+ newline,
+ string sets,
+ newline,
+ string "puts(\"SQLCACHE: store ",
+ string i,
+ string ".\");",
+ newline,
+ string "return uw_unit_v;",
+ newline,
+ string "};",
+ newline,
+ string "static uw_unit uw_Sqlcache_flush",
+ string i,
+ string "(uw_context ctx",
+ string args,
+ string ") {",
+ newline,
+ string "if (cacheQuery",
+ string i,
+ string " != NULL",
+ string eqsNull,
+ string ") {",
+ newline,
+ string "free(cacheQuery",
+ string i,
+ string ");",
+ newline,
+ string "cacheQuery",
+ string i,
+ string " = NULL;",
+ newline,
+ string "free(cacheWrite",
+ string i,
+ string ");",
+ newline,
+ string "cacheWrite",
+ string i,
+ string " = NULL;",
+ newline,
+ string "puts(\"SQLCACHE: flush ",
+ string i,
+ string ".\");}",
+ newline,
+ string "else { puts(\"SQLCACHE: keep ",
+ string i,
+ string ".\"); } return uw_unit_v;",
+ newline,
+ string "};",
+ newline,
+ newline]
+ end
+
+val setupGlobal = string "/* No global setup for toy cache. */"
+
+
+(* Bundled up. *)
+
+val cache = {check = check, store = store, flush = flush, lock = lock,
+ setupQuery = setupQuery, setupGlobal = setupGlobal}
+
+end
diff --git a/src/triple_key_fn.sml b/src/triple_key_fn.sml
new file mode 100644
index 00000000..ba77c60b
--- /dev/null
+++ b/src/triple_key_fn.sml
@@ -0,0 +1,15 @@
+functor TripleKeyFn (structure I : ORD_KEY
+ structure J : ORD_KEY
+ structure K : ORD_KEY)
+ : ORD_KEY where type ord_key = I.ord_key * J.ord_key * K.ord_key = struct
+
+type ord_key = I.ord_key * J.ord_key * K.ord_key
+
+fun compare ((i1, j1, k1), (i2, j2, k2)) =
+ case I.compare (i1, i2) of
+ EQUAL => (case J.compare (j1, j2) of
+ EQUAL => K.compare (k1, k2)
+ | ord => ord)
+ | ord => ord
+
+end
diff --git a/src/union_find_fn.sml b/src/union_find_fn.sml
new file mode 100644
index 00000000..7880591f
--- /dev/null
+++ b/src/union_find_fn.sml
@@ -0,0 +1,58 @@
+functor UnionFindFn(K : ORD_KEY) :> sig
+ type unionFind
+ val empty : unionFind
+ val union : unionFind * K.ord_key * K.ord_key -> unionFind
+ val union' : (K.ord_key * K.ord_key) * unionFind -> unionFind
+ val together : unionFind * K.ord_key * K.ord_key -> bool
+ val classes : unionFind -> K.ord_key list list
+end = struct
+
+structure M = BinaryMapFn(K)
+structure S = BinarySetFn(K)
+
+datatype entry =
+ Set of S.set
+ | Pointer of K.ord_key
+
+(* First map is the union-find tree, second stores equivalence classes. *)
+type unionFind = entry M.map ref * S.set M.map
+
+val empty : unionFind = (ref M.empty, M.empty)
+
+fun findPair (uf, x) =
+ case M.find (!uf, x) of
+ NONE => (S.singleton x, x)
+ | SOME (Set set) => (set, x)
+ | SOME (Pointer parent) =>
+ let
+ val (set, rep) = findPair (uf, parent)
+ in
+ uf := M.insert (!uf, x, Pointer rep);
+ (set, rep)
+ end
+
+fun find ((uf, _), x) = (S.listItems o #1 o findPair) (uf, x)
+
+fun classes (_, cs) = (map S.listItems o M.listItems) cs
+
+fun together ((uf, _), x, y) = case K.compare (#2 (findPair (uf, x)), #2 (findPair (uf, y))) of
+ EQUAL => true
+ | _ => false
+
+fun union ((uf, cs), x, y) =
+ let
+ val (xSet, xRep) = findPair (uf, x)
+ val (ySet, yRep) = findPair (uf, y)
+ val xySet = S.union (xSet, ySet)
+ in
+ (ref (M.insert (M.insert (!uf, yRep, Pointer xRep),
+ xRep, Set xySet)),
+ M.insert (case M.find (cs, yRep) of
+ NONE => cs
+ | SOME _ => #1 (M.remove (cs, yRep)),
+ xRep, xySet))
+ end
+
+fun union' ((x, y), uf) = union (uf, x, y)
+
+end
diff --git a/src/urweb.lex b/src/urweb.lex
index f32ddf1e..ca45eb6d 100644
--- a/src/urweb.lex
+++ b/src/urweb.lex
@@ -18,7 +18,7 @@
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
@@ -50,7 +50,7 @@ in
else
();
commentLevel := !commentLevel + 1)
-
+
fun exitComment () =
(ignore (commentLevel := !commentLevel - 1);
if !commentLevel = 0 then
@@ -58,15 +58,15 @@ in
else
())
- fun eof () =
- let
+ fun eof () =
+ let
val pos = ErrorMsg.lastLineStart ()
in
if !commentLevel > 0 then
ErrorMsg.errorAt' (!commentPos, !commentPos) "Unterminated comment"
else
();
- Tokens.EOF (pos, pos)
+ Tokens.EOF (pos, pos)
end
end
@@ -301,7 +301,7 @@ xint = x[0-9a-fA-F][0-9a-fA-F];
Tokens.XML_END (yypos, yypos + size yytext))
else
Tokens.END_TAG (id, yypos, yypos + size yytext)
- | _ =>
+ | _ =>
Tokens.END_TAG (id, yypos, yypos + size yytext)
end);