| // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| #include "platform/assert.h" |
| #include "vm/object.h" |
| #include "vm/json_stream.h" |
| |
| |
| namespace dart { |
| |
| JSONStream::JSONStream(intptr_t buf_size) : buffer_(buf_size) { |
| open_objects_ = 0; |
| arguments_ = NULL; |
| num_arguments_ = 0; |
| option_keys_ = NULL; |
| option_values_ = NULL; |
| num_options_ = 0; |
| } |
| |
| |
| JSONStream::~JSONStream() { |
| } |
| |
| |
| void JSONStream::Clear() { |
| buffer_.Clear(); |
| open_objects_ = 0; |
| } |
| |
| |
| void JSONStream::OpenObject(const char* property_name) { |
| PrintCommaIfNeeded(); |
| open_objects_++; |
| if (property_name != NULL) { |
| PrintPropertyName(property_name); |
| } |
| buffer_.AddChar('{'); |
| } |
| |
| |
| void JSONStream::CloseObject() { |
| ASSERT(open_objects_ > 0); |
| open_objects_--; |
| buffer_.AddChar('}'); |
| } |
| |
| |
| void JSONStream::OpenArray(const char* property_name) { |
| PrintCommaIfNeeded(); |
| if (property_name != NULL) { |
| PrintPropertyName(property_name); |
| } |
| open_objects_++; |
| buffer_.AddChar('['); |
| } |
| |
| |
| void JSONStream::CloseArray() { |
| ASSERT(open_objects_ > 0); |
| open_objects_--; |
| buffer_.AddChar(']'); |
| } |
| |
| |
| void JSONStream::PrintValueBool(bool b) { |
| PrintCommaIfNeeded(); |
| buffer_.Printf("%s", b ? "true" : "false"); |
| } |
| |
| |
| void JSONStream::PrintValue(intptr_t i) { |
| PrintCommaIfNeeded(); |
| buffer_.Printf("%" Pd "", i); |
| } |
| |
| |
| void JSONStream::PrintValue(double d) { |
| PrintCommaIfNeeded(); |
| buffer_.Printf("%f", d); |
| } |
| |
| |
| void JSONStream::PrintValue(const char* s) { |
| PrintCommaIfNeeded(); |
| buffer_.AddChar('"'); |
| buffer_.AddEscapedString(s); |
| buffer_.AddChar('"'); |
| } |
| |
| |
| void JSONStream::PrintfValue(const char* format, ...) { |
| PrintCommaIfNeeded(); |
| |
| va_list args; |
| va_start(args, format); |
| intptr_t len = OS::VSNPrint(NULL, 0, format, args); |
| va_end(args); |
| char* p = reinterpret_cast<char*>(malloc(len+1)); |
| va_start(args, format); |
| intptr_t len2 = OS::VSNPrint(p, len+1, format, args); |
| va_end(args); |
| ASSERT(len == len2); |
| buffer_.AddChar('"'); |
| buffer_.AddEscapedString(p); |
| buffer_.AddChar('"'); |
| free(p); |
| } |
| |
| |
| void JSONStream::PrintValue(const Object& o, bool ref) { |
| PrintCommaIfNeeded(); |
| o.PrintToJSONStream(this, ref); |
| } |
| |
| |
| void JSONStream::PrintPropertyBool(const char* name, bool b) { |
| PrintPropertyName(name); |
| PrintValueBool(b); |
| } |
| |
| |
| void JSONStream::PrintProperty(const char* name, intptr_t i) { |
| PrintPropertyName(name); |
| PrintValue(i); |
| } |
| |
| |
| void JSONStream::PrintProperty(const char* name, double d) { |
| PrintPropertyName(name); |
| PrintValue(d); |
| } |
| |
| |
| void JSONStream::PrintProperty(const char* name, const char* s) { |
| PrintPropertyName(name); |
| PrintValue(s); |
| } |
| |
| |
| void JSONStream::PrintfProperty(const char* name, const char* format, ...) { |
| PrintPropertyName(name); |
| va_list args; |
| va_start(args, format); |
| intptr_t len = OS::VSNPrint(NULL, 0, format, args); |
| va_end(args); |
| char* p = reinterpret_cast<char*>(malloc(len+1)); |
| va_start(args, format); |
| intptr_t len2 = OS::VSNPrint(p, len+1, format, args); |
| va_end(args); |
| ASSERT(len == len2); |
| buffer_.AddChar('"'); |
| buffer_.AddEscapedString(p); |
| buffer_.AddChar('"'); |
| free(p); |
| } |
| |
| |
| void JSONStream::SetArguments(const char** arguments, intptr_t num_arguments) { |
| arguments_ = arguments; |
| num_arguments_ = num_arguments; |
| } |
| |
| |
| void JSONStream::SetOptions(const char** option_keys, |
| const char** option_values, |
| intptr_t num_options) { |
| option_keys_ = option_keys; |
| option_values_ = option_values; |
| num_options_ = num_options; |
| } |
| |
| |
| void JSONStream::PrintProperty(const char* name, const Object& o, bool ref) { |
| PrintPropertyName(name); |
| PrintValue(o, ref); |
| } |
| |
| |
| void JSONStream::PrintPropertyName(const char* name) { |
| ASSERT(name != NULL); |
| PrintCommaIfNeeded(); |
| buffer_.AddChar('"'); |
| buffer_.AddEscapedString(name); |
| buffer_.AddChar('"'); |
| buffer_.AddChar(':'); |
| } |
| |
| |
| void JSONStream::PrintCommaIfNeeded() { |
| if (NeedComma()) { |
| buffer_.AddChar(','); |
| } |
| } |
| |
| |
| bool JSONStream::NeedComma() { |
| const char* buffer = buffer_.buf(); |
| intptr_t length = buffer_.length(); |
| if (length == 0) { |
| return false; |
| } |
| char ch = buffer[length-1]; |
| return (ch != '[') && (ch != '{') && (ch != ':') && (ch != ','); |
| } |
| |
| |
| JSONObject::JSONObject(const JSONArray* arr) : stream_(arr->stream_) { |
| stream_->OpenObject(); |
| } |
| |
| |
| void JSONObject::AddPropertyF(const char* name, |
| const char* format, ...) const { |
| stream_->PrintPropertyName(name); |
| va_list args; |
| va_start(args, format); |
| intptr_t len = OS::VSNPrint(NULL, 0, format, args); |
| va_end(args); |
| char* p = reinterpret_cast<char*>(malloc(len+1)); |
| va_start(args, format); |
| intptr_t len2 = OS::VSNPrint(p, len+1, format, args); |
| va_end(args); |
| ASSERT(len == len2); |
| stream_->buffer_.AddChar('"'); |
| stream_->buffer_.AddEscapedString(p); |
| stream_->buffer_.AddChar('"'); |
| free(p); |
| } |
| |
| |
| void JSONArray::AddValueF(const char* format, ...) const { |
| stream_->PrintCommaIfNeeded(); |
| va_list args; |
| va_start(args, format); |
| intptr_t len = OS::VSNPrint(NULL, 0, format, args); |
| va_end(args); |
| char* p = reinterpret_cast<char*>(malloc(len+1)); |
| va_start(args, format); |
| intptr_t len2 = OS::VSNPrint(p, len+1, format, args); |
| va_end(args); |
| ASSERT(len == len2); |
| stream_->buffer_.AddChar('"'); |
| stream_->buffer_.AddEscapedString(p); |
| stream_->buffer_.AddChar('"'); |
| free(p); |
| } |
| |
| } // namespace dart |
| |