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-rw-r--r--src/google/protobuf/io/printer.cc134
1 files changed, 112 insertions, 22 deletions
diff --git a/src/google/protobuf/io/printer.cc b/src/google/protobuf/io/printer.cc
index 7d886506..de67cef1 100644
--- a/src/google/protobuf/io/printer.cc
+++ b/src/google/protobuf/io/printer.cc
@@ -42,13 +42,25 @@ namespace protobuf {
namespace io {
Printer::Printer(ZeroCopyOutputStream* output, char variable_delimiter)
- : variable_delimiter_(variable_delimiter),
- output_(output),
- buffer_(NULL),
- buffer_size_(0),
- at_start_of_line_(true),
- failed_(false) {
-}
+ : variable_delimiter_(variable_delimiter),
+ output_(output),
+ buffer_(NULL),
+ buffer_size_(0),
+ offset_(0),
+ at_start_of_line_(true),
+ failed_(false),
+ annotation_collector_(NULL) {}
+
+Printer::Printer(ZeroCopyOutputStream* output, char variable_delimiter,
+ AnnotationCollector* annotation_collector)
+ : variable_delimiter_(variable_delimiter),
+ output_(output),
+ buffer_(NULL),
+ buffer_size_(0),
+ offset_(0),
+ at_start_of_line_(true),
+ failed_(false),
+ annotation_collector_(annotation_collector) {}
Printer::~Printer() {
// Only BackUp() if we have called Next() at least once and never failed.
@@ -57,9 +69,49 @@ Printer::~Printer() {
}
}
-void Printer::Print(const map<string, string>& variables, const char* text) {
+bool Printer::GetSubstitutionRange(const char* varname,
+ std::pair<size_t, size_t>* range) {
+ std::map<string, std::pair<size_t, size_t> >::const_iterator iter =
+ substitutions_.find(varname);
+ if (iter == substitutions_.end()) {
+ GOOGLE_LOG(DFATAL) << " Undefined variable in annotation: " << varname;
+ return false;
+ }
+ if (iter->second.first > iter->second.second) {
+ GOOGLE_LOG(DFATAL) << " Variable used for annotation used multiple times: "
+ << varname;
+ return false;
+ }
+ *range = iter->second;
+ return true;
+}
+
+void Printer::Annotate(const char* begin_varname, const char* end_varname,
+ const string& file_path, const std::vector<int>& path) {
+ if (annotation_collector_ == NULL) {
+ // Can't generate signatures with this Printer.
+ return;
+ }
+ std::pair<size_t, size_t> begin, end;
+ if (!GetSubstitutionRange(begin_varname, &begin) ||
+ !GetSubstitutionRange(end_varname, &end)) {
+ return;
+ }
+ if (begin.first > end.second) {
+ GOOGLE_LOG(DFATAL) << " Annotation has negative length from " << begin_varname
+ << " to " << end_varname;
+ } else {
+ annotation_collector_->AddAnnotation(begin.first, end.second, file_path,
+ path);
+ }
+}
+
+void Printer::Print(const std::map<string, string>& variables,
+ const char* text) {
int size = strlen(text);
int pos = 0; // The number of bytes we've written so far.
+ substitutions_.clear();
+ line_start_variables_.clear();
for (int i = 0; i < size; i++) {
if (text[i] == '\n') {
@@ -71,6 +123,7 @@ void Printer::Print(const map<string, string>& variables, const char* text) {
// Setting this true will cause the next WriteRaw() to insert an indent
// first.
at_start_of_line_ = true;
+ line_start_variables_.clear();
} else if (text[i] == variable_delimiter_) {
// Saw the start of a variable name.
@@ -93,11 +146,25 @@ void Printer::Print(const map<string, string>& variables, const char* text) {
WriteRaw(&variable_delimiter_, 1);
} else {
// Replace with the variable's value.
- map<string, string>::const_iterator iter = variables.find(varname);
+ std::map<string, string>::const_iterator iter = variables.find(varname);
if (iter == variables.end()) {
GOOGLE_LOG(DFATAL) << " Undefined variable: " << varname;
} else {
+ if (at_start_of_line_ && iter->second.empty()) {
+ line_start_variables_.push_back(varname);
+ }
WriteRaw(iter->second.data(), iter->second.size());
+ std::pair<std::map<string, std::pair<size_t, size_t> >::iterator,
+ bool>
+ inserted = substitutions_.insert(std::make_pair(
+ varname,
+ std::make_pair(offset_ - iter->second.size(), offset_)));
+ if (!inserted.second) {
+ // This variable was used multiple times. Make its span have
+ // negative length so we can detect it if it gets used in an
+ // annotation.
+ inserted.first->second = std::make_pair(1, 0);
+ }
}
}
@@ -112,13 +179,13 @@ void Printer::Print(const map<string, string>& variables, const char* text) {
}
void Printer::Print(const char* text) {
- static map<string, string> empty;
+ static std::map<string, string> empty;
Print(empty, text);
}
void Printer::Print(const char* text,
const char* variable, const string& value) {
- map<string, string> vars;
+ std::map<string, string> vars;
vars[variable] = value;
Print(vars, text);
}
@@ -126,7 +193,7 @@ void Printer::Print(const char* text,
void Printer::Print(const char* text,
const char* variable1, const string& value1,
const char* variable2, const string& value2) {
- map<string, string> vars;
+ std::map<string, string> vars;
vars[variable1] = value1;
vars[variable2] = value2;
Print(vars, text);
@@ -136,7 +203,7 @@ void Printer::Print(const char* text,
const char* variable1, const string& value1,
const char* variable2, const string& value2,
const char* variable3, const string& value3) {
- map<string, string> vars;
+ std::map<string, string> vars;
vars[variable1] = value1;
vars[variable2] = value2;
vars[variable3] = value3;
@@ -148,7 +215,7 @@ void Printer::Print(const char* text,
const char* variable2, const string& value2,
const char* variable3, const string& value3,
const char* variable4, const string& value4) {
- map<string, string> vars;
+ std::map<string, string> vars;
vars[variable1] = value1;
vars[variable2] = value2;
vars[variable3] = value3;
@@ -162,7 +229,7 @@ void Printer::Print(const char* text,
const char* variable3, const string& value3,
const char* variable4, const string& value4,
const char* variable5, const string& value5) {
- map<string, string> vars;
+ std::map<string, string> vars;
vars[variable1] = value1;
vars[variable2] = value2;
vars[variable3] = value3;
@@ -178,7 +245,7 @@ void Printer::Print(const char* text,
const char* variable4, const string& value4,
const char* variable5, const string& value5,
const char* variable6, const string& value6) {
- map<string, string> vars;
+ std::map<string, string> vars;
vars[variable1] = value1;
vars[variable2] = value2;
vars[variable3] = value3;
@@ -196,7 +263,7 @@ void Printer::Print(const char* text,
const char* variable5, const string& value5,
const char* variable6, const string& value6,
const char* variable7, const string& value7) {
- map<string, string> vars;
+ std::map<string, string> vars;
vars[variable1] = value1;
vars[variable2] = value2;
vars[variable3] = value3;
@@ -216,7 +283,7 @@ void Printer::Print(const char* text,
const char* variable6, const string& value6,
const char* variable7, const string& value7,
const char* variable8, const string& value8) {
- map<string, string> vars;
+ std::map<string, string> vars;
vars[variable1] = value1;
vars[variable2] = value2;
vars[variable3] = value3;
@@ -257,16 +324,38 @@ void Printer::WriteRaw(const char* data, int size) {
if (at_start_of_line_ && (size > 0) && (data[0] != '\n')) {
// Insert an indent.
at_start_of_line_ = false;
- WriteRaw(indent_.data(), indent_.size());
+ CopyToBuffer(indent_.data(), indent_.size());
if (failed_) return;
+ // Fix up empty variables (e.g., "{") that should be annotated as
+ // coming after the indent.
+ for (std::vector<string>::iterator i = line_start_variables_.begin();
+ i != line_start_variables_.end(); ++i) {
+ substitutions_[*i].first += indent_.size();
+ substitutions_[*i].second += indent_.size();
+ }
}
+ // If we're going to write any data, clear line_start_variables_, since
+ // we've either updated them in the block above or they no longer refer to
+ // the current line.
+ line_start_variables_.clear();
+
+ CopyToBuffer(data, size);
+}
+
+void Printer::CopyToBuffer(const char* data, int size) {
+ if (failed_) return;
+ if (size == 0) return;
+
while (size > buffer_size_) {
// Data exceeds space in the buffer. Copy what we can and request a
// new buffer.
- memcpy(buffer_, data, buffer_size_);
- data += buffer_size_;
- size -= buffer_size_;
+ if (buffer_size_ > 0) {
+ memcpy(buffer_, data, buffer_size_);
+ offset_ += buffer_size_;
+ data += buffer_size_;
+ size -= buffer_size_;
+ }
void* void_buffer;
failed_ = !output_->Next(&void_buffer, &buffer_size_);
if (failed_) return;
@@ -277,6 +366,7 @@ void Printer::WriteRaw(const char* data, int size) {
memcpy(buffer_, data, size);
buffer_ += size;
buffer_size_ -= size;
+ offset_ += size;
}
} // namespace io
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-09 14:33:28 +0000