johnmccutchan@google.com
b7608cc5a4
R=iposva@google.com Review URL: https://codereview.chromium.org//18168003 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@24697 260f80e4-7a28-3924-810f-c04153c831b5
136 lines
2.5 KiB
C++
136 lines
2.5 KiB
C++
// Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#include "platform/assert.h"
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#include "vm/json_stream.h"
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namespace dart {
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JSONStream::JSONStream(TextBuffer* buffer) {
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ASSERT(buffer != NULL);
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buffer_ = buffer;
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open_objects_ = 0;
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}
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JSONStream::~JSONStream() {
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}
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void JSONStream::Clear() {
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buffer_->Clear();
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open_objects_ = 0;
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}
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void JSONStream::OpenObject(const char* property_name) {
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PrintCommaIfNeeded();
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open_objects_++;
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if (property_name != NULL) {
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PrintPropertyName(property_name);
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}
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buffer_->AddChar('{');
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}
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void JSONStream::CloseObject() {
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ASSERT(open_objects_ > 0);
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open_objects_--;
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buffer_->AddChar('}');
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}
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void JSONStream::OpenArray(const char* property_name) {
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PrintCommaIfNeeded();
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if (property_name != NULL) {
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PrintPropertyName(property_name);
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}
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open_objects_++;
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buffer_->AddChar('[');
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}
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void JSONStream::CloseArray() {
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ASSERT(open_objects_ > 0);
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open_objects_--;
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buffer_->AddChar(']');
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}
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void JSONStream::PrintValueBool(bool b) {
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PrintCommaIfNeeded();
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buffer_->Printf("%s", b ? "true" : "false");
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}
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void JSONStream::PrintValue(intptr_t i) {
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PrintCommaIfNeeded();
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buffer_->Printf("%"Pd"", i);
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}
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void JSONStream::PrintValue(double d) {
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PrintCommaIfNeeded();
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buffer_->Printf("%f", d);
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}
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void JSONStream::PrintValue(const char* s) {
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PrintCommaIfNeeded();
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buffer_->Printf("\"%s\"", s);
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}
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void JSONStream::PrintPropertyBool(const char* name, bool b) {
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PrintPropertyName(name);
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PrintValueBool(b);
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}
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void JSONStream::PrintProperty(const char* name, intptr_t i) {
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PrintPropertyName(name);
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PrintValue(i);
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}
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void JSONStream::PrintProperty(const char* name, double d) {
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PrintPropertyName(name);
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PrintValue(d);
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}
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void JSONStream::PrintProperty(const char* name, const char* s) {
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PrintPropertyName(name);
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PrintValue(s);
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}
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void JSONStream::PrintPropertyName(const char* name) {
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ASSERT(name != NULL);
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PrintCommaIfNeeded();
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buffer_->Printf("\"%s\":", name);
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}
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void JSONStream::PrintCommaIfNeeded() {
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if (NeedComma()) {
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buffer_->AddChar(',');
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}
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}
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bool JSONStream::NeedComma() {
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const char* buffer = buffer_->buf();
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intptr_t length = buffer_->length();
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if (length == 0) {
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return false;
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}
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char ch = buffer[length-1];
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return ch != '[' && ch != '{' && ch != ':' && ch != ',';
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}
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} // namespace dart
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