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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* vim: set ts=8 sts=2 et sw=2 tw=80:
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
#include "vm/JSONPrinter.h"
#include "mozilla/Assertions.h"
#include "mozilla/FloatingPoint.h"
#include "mozilla/IntegerPrintfMacros.h"
#include <stdarg.h>
#include "jsnum.h"
using namespace js;
void JSONPrinter::indent() {
MOZ_ASSERT(indentLevel_ >= 0);
if (inlineLevel_ > 0) {
out_.putChar(' ');
return;
}
if (indent_) {
out_.putChar('\n');
for (int i = 0; i < indentLevel_; i++) {
out_.put(" ");
}
}
}
void JSONPrinter::beforeValue() {
if (!first_) {
out_.putChar(',');
}
indent();
}
void JSONPrinter::propertyName(const char* name) {
beforeValue();
out_.printf("\"%s\":", name);
if (indent_) {
out_.put(" ");
}
first_ = false;
}
void JSONPrinter::beginObject() {
beforeValue();
out_.putChar('{');
indentLevel_++;
first_ = true;
}
void JSONPrinter::beginList() {
beforeValue();
out_.putChar('[');
indentLevel_++;
first_ = true;
}
void JSONPrinter::beginObjectProperty(const char* name) {
propertyName(name);
out_.putChar('{');
indentLevel_++;
first_ = true;
}
void JSONPrinter::beginListProperty(const char* name) {
propertyName(name);
out_.putChar('[');
indentLevel_++;
first_ = true;
}
void JSONPrinter::beginInlineListProperty(const char* name) {
beginListProperty(name);
beginInline();
}
GenericPrinter& JSONPrinter::beginStringProperty(const char* name) {
propertyName(name);
out_.putChar('"');
return out_;
}
void JSONPrinter::endStringProperty() {
endString();
first_ = false;
}
GenericPrinter& JSONPrinter::beginString() {
beforeValue();
out_.putChar('"');
return out_;
}
void JSONPrinter::endString() { out_.putChar('"'); }
void JSONPrinter::boolProperty(const char* name, bool value) {
propertyName(name);
out_.put(value ? "true" : "false");
}
template <typename CharT>
static void JSONString(GenericPrinter& out, const CharT* s, size_t length) {
const CharT* end = s + length;
for (const CharT* t = s; t < end; s = ++t) {
// This quote implementation is probably correct,
// but uses \u even when not strictly necessary.
char16_t c = *t;
if (c == '"' || c == '\\') {
out.printf("\\");
out.printf("%c", char(c));
} else if (!IsAsciiPrintable(c)) {
out.printf("\\u%04x", c);
} else {
out.printf("%c", char(c));
}
}
}
void JSONPrinter::property(const char* name, JSLinearString* str) {
JS::AutoCheckCannotGC nogc;
beginStringProperty(name);
// Limit the string length to reduce the JSON file size.
size_t length = std::min(str->length(), size_t(128));
if (str->hasLatin1Chars()) {
JSONString(out_, str->latin1Chars(nogc), length);
} else {
JSONString(out_, str->twoByteChars(nogc), length);
}
endStringProperty();
}
void JSONPrinter::property(const char* name, const char* value) {
beginStringProperty(name);
out_.put(value);
endStringProperty();
}
void JSONPrinter::formatProperty(const char* name, const char* format, ...) {
va_list ap;
va_start(ap, format);
beginStringProperty(name);
out_.vprintf(format, ap);
endStringProperty();
va_end(ap);
}
void JSONPrinter::formatPropertyVA(const char* name, const char* format,
va_list ap) {
beginStringProperty(name);
out_.vprintf(format, ap);
endStringProperty();
}
void JSONPrinter::value(const char* format, ...) {
va_list ap;
va_start(ap, format);
beforeValue();
out_.putChar('"');
out_.vprintf(format, ap);
out_.putChar('"');
va_end(ap);
first_ = false;
}
void JSONPrinter::property(const char* name, int32_t value) {
propertyName(name);
out_.printf("%" PRId32, value);
}
void JSONPrinter::value(int val) {
beforeValue();
out_.printf("%d", val);
first_ = false;
}
void JSONPrinter::property(const char* name, uint32_t value) {
propertyName(name);
out_.printf("%" PRIu32, value);
}
void JSONPrinter::property(const char* name, int64_t value) {
propertyName(name);
out_.printf("%" PRId64, value);
}
void JSONPrinter::property(const char* name, uint64_t value) {
propertyName(name);
out_.printf("%" PRIu64, value);
}
#if defined(XP_DARWIN) || defined(__OpenBSD__) || defined(__wasi__)
void JSONPrinter::property(const char* name, size_t value) {
propertyName(name);
out_.printf("%zu", value);
}
#endif
void JSONPrinter::floatProperty(const char* name, double value,
size_t precision) {
if (!std::isfinite(value)) {
propertyName(name);
out_.put("null");
return;
}
ToCStringBuf cbuf;
const char* str = NumberToCString(&cbuf, value);
MOZ_ASSERT(str);
property(name, str);
}
void JSONPrinter::property(const char* name, const mozilla::TimeDuration& dur,
TimePrecision precision) {
if (precision == MICROSECONDS) {
property(name, static_cast<int64_t>(dur.ToMicroseconds()));
return;
}
propertyName(name);
lldiv_t split;
switch (precision) {
case SECONDS:
split = lldiv(static_cast<int64_t>(dur.ToMilliseconds()), 1000);
break;
case MILLISECONDS:
split = lldiv(static_cast<int64_t>(dur.ToMicroseconds()), 1000);
break;
case MICROSECONDS:
MOZ_ASSERT_UNREACHABLE("");
};
out_.printf("%lld.%03lld", split.quot, split.rem);
}
void JSONPrinter::nullProperty(const char* name) {
propertyName(name);
out_.put("null");
}
void JSONPrinter::nullValue() {
beforeValue();
out_.put("null");
first_ = false;
}
void JSONPrinter::endObject() {
indentLevel_--;
indent();
out_.putChar('}');
first_ = false;
}
void JSONPrinter::endList() {
indentLevel_--;
indent();
out_.putChar(']');
first_ = false;
}
void JSONPrinter::endInlineList() {
endList();
endInline();
}
void JSONPrinter::beginInline() { inlineLevel_++; }
void JSONPrinter::endInline() { inlineLevel_--; }