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// Copyright (c) 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "tools/gn/token.h"
#include "base/logging.h"
namespace {
std::string UnescapeString(const base::StringPiece& input) {
std::string result;
result.reserve(input.size());
for (size_t i = 0; i < input.size(); i++) {
if (input[i] == '\\') {
DCHECK(i < input.size() - 1); // Last char shouldn't be a backslash or
// it would have escaped the terminator.
i++; // Skip backslash, next char is a literal.
}
result.push_back(input[i]);
}
return result;
}
} // namespace
Token::Token() : type_(INVALID), value_() {
}
Token::Token(const Location& location,
Type t,
const base::StringPiece& v)
: type_(t),
value_(v),
location_(location) {
}
bool Token::IsIdentifierEqualTo(const char* v) const {
return type_ == IDENTIFIER && value_ == v;
}
bool Token::IsStringEqualTo(const char* v) const {
return type_ == STRING && value_ == v;
}
std::string Token::StringValue() const {
DCHECK(type() == STRING);
// Trim off the string terminators at the end.
return UnescapeString(value_.substr(1, value_.size() - 2));
}
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