Merge remote repo native into ext/native/.

ext/native/json/json_writer.cpp

@@ -0,0 +1,115 @@
+#include "json/json_writer.h"
+
+JsonWriter::JsonWriter() {
+}
+
+JsonWriter::~JsonWriter() {
+}
+
+void JsonWriter::begin() {
+	str_ << "{";
+	stack_.push_back(StackEntry(DICT));
+}
+
+void JsonWriter::end() {
+	pop();
+	str_ << "\n";
+}
+
+const char *JsonWriter::indent(int n) const {
+	static const char * const whitespace = "															";
+	return whitespace + (32 - n);
+}
+
+const char *JsonWriter::indent() const {
+	int amount = (int)stack_.size() + 1;
+	amount *= 2;	// 2-space indent.
+	return indent(amount);
+}
+
+const char *JsonWriter::arrayIndent() const {
+	int amount = (int)stack_.size() + 1;
+	amount *= 2;	// 2-space indent.
+	return stack_.back().first ? indent(amount) : "";
+}
+
+const char *JsonWriter::comma() const {
+	if (stack_.back().first) {
+		return "";
+	} else {
+		return ",";
+	}
+}
+
+const char *JsonWriter::arrayComma() const {
+	if (stack_.back().first) {
+		return "\n";
+	} else {
+		return ", ";
+	}
+}
+
+void JsonWriter::pushDict(const char *name) {
+	str_ << comma() << "\n" << indent() << "\"" << name << "\": {";
+	stack_.push_back(StackEntry(DICT));
+}
+
+void JsonWriter::pushArray(const char *name) {
+	str_ << comma() << "\n" << indent() << "\"" << name << "\": [";
+	stack_.push_back(StackEntry(ARRAY));
+}
+
+void JsonWriter::writeBool(bool value) {
+	str_ << arrayComma() << arrayIndent() << (value ? "true" : "false");
+	stack_.back().first = false;
+}
+
+void JsonWriter::writeBool(const char *name, bool value) {
+	str_ << comma() << "\n" << indent() << "\"" << name << "\": " << (value ? "true" : "false");
+	stack_.back().first = false;
+}
+
+void JsonWriter::writeInt(int value) {
+	str_ << arrayComma() << arrayIndent() << value;
+	stack_.back().first = false;
+}
+
+void JsonWriter::writeInt(const char *name, int value) {
+	str_ << comma() << "\n" << indent() << "\"" << name << "\": " << value;
+	stack_.back().first = false;
+}
+
+void JsonWriter::writeFloat(double value) {
+	str_ << arrayComma() << arrayIndent() << value;
+	stack_.back().first = false;
+}
+
+void JsonWriter::writeFloat(const char *name, double value) {
+	str_ << comma() << "\n" << indent() << "\"" << name << "\": " << value;
+	stack_.back().first = false;
+}
+
+void JsonWriter::writeString(const char *value) {
+	str_ << arrayComma() << arrayIndent() << "\"" << value << "\"";
+	stack_.back().first = false;
+}
+
+void JsonWriter::writeString(const char *name, const char *value) {
+	str_ << comma() << "\n" << indent() << "\"" << name << "\": \"" << value << "\"";
+	stack_.back().first = false;
+}
+
+void JsonWriter::pop() {
+	BlockType type = stack_.back().type;
+	stack_.pop_back();
+	switch (type) {
+	case ARRAY:
+		str_ << "\n" << indent() << "]";
+		break;
+	case DICT:
+		str_ << "\n" << indent() << "}";
+		break;
+	}
+	if (stack_.size() > 0)
+		stack_.back().first = false;
+}