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// Copyright 2011 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef V8_PARSING_PREPARSE_DATA_H_
#define V8_PARSING_PREPARSE_DATA_H_
#include "src/allocation.h"
#include "src/collector.h"
#include "src/hashmap.h"
#include "src/messages.h"
#include "src/parsing/preparse-data-format.h"
namespace v8 {
namespace internal {
class ScriptData {
public:
ScriptData(const byte* data, int length);
~ScriptData() {
if (owns_data_) DeleteArray(data_);
}
const byte* data() const { return data_; }
int length() const { return length_; }
bool rejected() const { return rejected_; }
void Reject() { rejected_ = true; }
void AcquireDataOwnership() {
DCHECK(!owns_data_);
owns_data_ = true;
}
void ReleaseDataOwnership() {
DCHECK(owns_data_);
owns_data_ = false;
}
private:
bool owns_data_ : 1;
bool rejected_ : 1;
const byte* data_;
int length_;
DISALLOW_COPY_AND_ASSIGN(ScriptData);
};
// Abstract interface for preparse data recorder.
class ParserRecorder {
public:
ParserRecorder() { }
virtual ~ParserRecorder() { }
// Logs the scope and some details of a function literal in the source.
virtual void LogFunction(int start, int end, int literals, int properties,
LanguageMode language_mode, bool uses_super_property,
bool calls_eval) = 0;
// Logs an error message and marks the log as containing an error.
// Further logging will be ignored, and ExtractData will return a vector
// representing the error only.
virtual void LogMessage(int start, int end, MessageTemplate::Template message,
const char* argument_opt,
ParseErrorType error_type) = 0;
private:
DISALLOW_COPY_AND_ASSIGN(ParserRecorder);
};
class SingletonLogger : public ParserRecorder {
public:
SingletonLogger()
: has_error_(false), start_(-1), end_(-1), error_type_(kSyntaxError) {}
virtual ~SingletonLogger() {}
void Reset() { has_error_ = false; }
virtual void LogFunction(int start, int end, int literals, int properties,
LanguageMode language_mode, bool uses_super_property,
bool calls_eval) {
DCHECK(!has_error_);
start_ = start;
end_ = end;
literals_ = literals;
properties_ = properties;
language_mode_ = language_mode;
uses_super_property_ = uses_super_property;
calls_eval_ = calls_eval;
}
// Logs an error message and marks the log as containing an error.
// Further logging will be ignored, and ExtractData will return a vector
// representing the error only.
virtual void LogMessage(int start, int end, MessageTemplate::Template message,
const char* argument_opt, ParseErrorType error_type) {
if (has_error_) return;
has_error_ = true;
start_ = start;
end_ = end;
message_ = message;
argument_opt_ = argument_opt;
error_type_ = error_type;
}
bool has_error() const { return has_error_; }
int start() const { return start_; }
int end() const { return end_; }
int literals() const {
DCHECK(!has_error_);
return literals_;
}
int properties() const {
DCHECK(!has_error_);
return properties_;
}
LanguageMode language_mode() const {
DCHECK(!has_error_);
return language_mode_;
}
bool uses_super_property() const {
DCHECK(!has_error_);
return uses_super_property_;
}
bool calls_eval() const {
DCHECK(!has_error_);
return calls_eval_;
}
ParseErrorType error_type() const {
DCHECK(has_error_);
return error_type_;
}
MessageTemplate::Template message() {
DCHECK(has_error_);
return message_;
}
const char* argument_opt() const {
DCHECK(has_error_);
return argument_opt_;
}
private:
bool has_error_;
int start_;
int end_;
// For function entries.
int literals_;
int properties_;
LanguageMode language_mode_;
bool uses_super_property_;
bool calls_eval_;
// For error messages.
MessageTemplate::Template message_;
const char* argument_opt_;
ParseErrorType error_type_;
};
class CompleteParserRecorder : public ParserRecorder {
public:
struct Key {
bool is_one_byte;
Vector<const byte> literal_bytes;
};
CompleteParserRecorder();
virtual ~CompleteParserRecorder() {}
virtual void LogFunction(int start, int end, int literals, int properties,
LanguageMode language_mode, bool uses_super_property,
bool calls_eval) {
function_store_.Add(start);
function_store_.Add(end);
function_store_.Add(literals);
function_store_.Add(properties);
function_store_.Add(language_mode);
function_store_.Add(uses_super_property);
function_store_.Add(calls_eval);
}
// Logs an error message and marks the log as containing an error.
// Further logging will be ignored, and ExtractData will return a vector
// representing the error only.
virtual void LogMessage(int start, int end, MessageTemplate::Template message,
const char* argument_opt, ParseErrorType error_type);
ScriptData* GetScriptData();
bool HasError() {
return static_cast<bool>(preamble_[PreparseDataConstants::kHasErrorOffset]);
}
Vector<unsigned> ErrorMessageData() {
DCHECK(HasError());
return function_store_.ToVector();
}
private:
void WriteString(Vector<const char> str);
Collector<unsigned> function_store_;
unsigned preamble_[PreparseDataConstants::kHeaderSize];
#ifdef DEBUG
int prev_start_;
#endif
};
} // namespace internal
} // namespace v8.
#endif // V8_PARSING_PREPARSE_DATA_H_
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