877d6198e5
Review URL: http://codereview.chromium.org/7308004 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@8534 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
93 lines
3.1 KiB
C++
93 lines
3.1 KiB
C++
// Copyright 2011 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include <stdarg.h>
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#include "../include/v8stdint.h"
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#include "checks.h"
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#include "utils.h"
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namespace v8 {
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namespace internal {
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SimpleStringBuilder::SimpleStringBuilder(int size) {
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buffer_ = Vector<char>::New(size);
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position_ = 0;
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}
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void SimpleStringBuilder::AddString(const char* s) {
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AddSubstring(s, StrLength(s));
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}
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void SimpleStringBuilder::AddSubstring(const char* s, int n) {
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ASSERT(!is_finalized() && position_ + n < buffer_.length());
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ASSERT(static_cast<size_t>(n) <= strlen(s));
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memcpy(&buffer_[position_], s, n * kCharSize);
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position_ += n;
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}
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void SimpleStringBuilder::AddPadding(char c, int count) {
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for (int i = 0; i < count; i++) {
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AddCharacter(c);
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}
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}
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void SimpleStringBuilder::AddDecimalInteger(int32_t value) {
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uint32_t number = static_cast<uint32_t>(value);
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if (value < 0) {
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AddCharacter('-');
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number = static_cast<uint32_t>(-value);
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}
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int digits = 1;
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for (uint32_t factor = 10; digits < 10; digits++, factor *= 10) {
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if (factor > number) break;
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}
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position_ += digits;
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for (int i = 1; i <= digits; i++) {
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buffer_[position_ - i] = '0' + static_cast<char>(number % 10);
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number /= 10;
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}
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}
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char* SimpleStringBuilder::Finalize() {
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ASSERT(!is_finalized() && position_ < buffer_.length());
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buffer_[position_] = '\0';
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// Make sure nobody managed to add a 0-character to the
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// buffer while building the string.
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ASSERT(strlen(buffer_.start()) == static_cast<size_t>(position_));
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position_ = -1;
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ASSERT(is_finalized());
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return buffer_.start();
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}
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} } // namespace v8::internal
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