52 lines
1.5 KiB
C
52 lines
1.5 KiB
C
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// Copyright (c) 2013 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef TOOLS_GN_STRING_UTILS_H_
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#define TOOLS_GN_STRING_UTILS_H_
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#include "base/strings/string_piece.h"
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class Err;
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class Scope;
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class Token;
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class Value;
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inline std::string operator+(const std::string& a, const base::StringPiece& b) {
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std::string ret;
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ret.reserve(a.size() + b.size());
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ret.assign(a);
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ret.append(b.data(), b.size());
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return ret;
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}
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inline std::string operator+(const base::StringPiece& a, const std::string& b) {
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std::string ret;
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ret.reserve(a.size() + b.size());
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ret.assign(a.data(), a.size());
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ret.append(b);
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return ret;
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}
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// Unescapes and expands variables in the given literal, writing the result
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// to the given value. On error, sets |err| and returns false.
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bool ExpandStringLiteral(Scope* scope,
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const Token& literal,
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Value* result,
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Err* err);
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// Removes the given prefix from the string. Asserts if the string does
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// not have the given prefix.
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//
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// Note: could potentially return a StringPiece into the str.
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std::string RemovePrefix(const std::string& str, const std::string& prefix);
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// Appends the given string piece to the given string. This avoids an
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// intermediate copy.
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inline void AppendStringPiece(std::string* dest,
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const base::StringPiece& piece) {
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dest->append(piece.data(), piece.size());
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}
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#endif // TOOLS_GN_STRING_UTILS_H_
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