AST no templates

1 files changed, 63 insertions, 0 deletions

diff --git a/parse_productions.cpp b/parse_productions.cpp
new file mode 100644
index 00000000..82bdd0b9
--- /dev/null
+++ b/parse_productions.cpp
@@ -0,0 +1,63 @@
+#include "parse_productions.h"
+
+using namespace parse_productions;
+
+#define PRODUCTIONS(sym) static const Production_t sym##_productions
+
+PRODUCTIONS(job_list) =
+    {
+        {},
+        {symbol_job, symbol_job_list},
+        {parse_token_type_end, symbol_job_list}
+    };
+
+
+
+/* A job_list is a list of jobs, separated by semicolons or newlines */
+
+DEC(job_list) {
+    symbol_job_list,
+    {
+        {},
+        {symbol_job, symbol_job_list},
+        {parse_token_type_end, symbol_job_list}
+    },
+    resolve_job_list
+};
+
+static int resolve_job_list(parse_token_type_t token_type, parse_keyword_t token_keyword)
+    {
+        switch (token_type)
+        {
+            case parse_token_type_string:
+                // 'end' is special
+                switch (token_keyword)
+                {
+                    case parse_keyword_end:
+                    case parse_keyword_else:
+                        // End this job list
+                        return 0;
+
+                    default:
+                        // Normal string
+                        return 1;
+                }
+
+            case parse_token_type_pipe:
+            case parse_token_type_redirection:
+            case parse_token_type_background:
+                return 1;
+
+            case parse_token_type_end:
+                // Empty line
+                return 2;
+
+            case parse_token_type_terminate:
+                // no more commands, just transition to empty
+                return 0;
+                break;
+
+            default:
+                return NO_PRODUCTION;
+        }
+    }
\ No newline at end of file