Source code
Revision control
Copy as Markdown
Other Tools
/* -*- 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 <limits>
#include <string.h>
#include "js/Array.h" // JS::IsArrayObject
#include "js/Exception.h"
#include "js/friend/ErrorMessages.h" // JSMSG_*
#include "js/JSON.h"
#include "js/MemoryFunctions.h"
#include "js/Printf.h"
#include "js/PropertyAndElement.h" // JS_GetProperty
#include "jsapi-tests/tests.h"
using namespace js;
class AutoInflatedString {
JSContext* const cx;
char16_t* chars_;
size_t length_;
public:
explicit AutoInflatedString(JSContext* cx)
: cx(cx), chars_(nullptr), length_(0) {}
~AutoInflatedString() { JS_free(cx, chars_); }
template <size_t N>
void operator=(const char (&str)[N]) {
length_ = N - 1;
chars_ = InflateString(cx, str, length_);
if (!chars_) {
abort();
}
}
void operator=(const char* str) {
length_ = strlen(str);
chars_ = InflateString(cx, str, length_);
if (!chars_) {
abort();
}
}
const char16_t* chars() const { return chars_; }
size_t length() const { return length_; }
};
BEGIN_TEST(testParseJSON_success) {
// Primitives
JS::RootedValue expected(cx);
expected = JS::TrueValue();
CHECK(TryParse(cx, "true", expected));
expected = JS::FalseValue();
CHECK(TryParse(cx, "false", expected));
expected = JS::NullValue();
CHECK(TryParse(cx, "null", expected));
expected.setInt32(0);
CHECK(TryParse(cx, "0", expected));
expected.setInt32(1);
CHECK(TryParse(cx, "1", expected));
expected.setInt32(-1);
CHECK(TryParse(cx, "-1", expected));
expected.setDouble(1);
CHECK(TryParse(cx, "1", expected));
expected.setDouble(1.75);
CHECK(TryParse(cx, "1.75", expected));
expected.setDouble(9e9);
CHECK(TryParse(cx, "9e9", expected));
expected.setDouble(std::numeric_limits<double>::infinity());
CHECK(TryParse(cx, "9e99999", expected));
JS::Rooted<JSLinearString*> str(cx);
const char16_t emptystr[] = {'\0'};
str = js::NewStringCopyN<CanGC>(cx, emptystr, 0);
CHECK(str);
expected = JS::StringValue(str);
CHECK(TryParse(cx, "\"\"", expected));
const char16_t nullstr[] = {'\0'};
str = NewString(cx, nullstr);
CHECK(str);
expected = JS::StringValue(str);
CHECK(TryParse(cx, "\"\\u0000\"", expected));
const char16_t backstr[] = {'\b'};
str = NewString(cx, backstr);
CHECK(str);
expected = JS::StringValue(str);
CHECK(TryParse(cx, "\"\\b\"", expected));
CHECK(TryParse(cx, "\"\\u0008\"", expected));
const char16_t newlinestr[] = {
'\n',
};
str = NewString(cx, newlinestr);
CHECK(str);
expected = JS::StringValue(str);
CHECK(TryParse(cx, "\"\\n\"", expected));
CHECK(TryParse(cx, "\"\\u000A\"", expected));
// Arrays
JS::RootedValue v(cx), v2(cx);
JS::RootedObject obj(cx);
bool isArray;
CHECK(Parse(cx, "[]", &v));
CHECK(v.isObject());
obj = &v.toObject();
CHECK(JS::IsArrayObject(cx, obj, &isArray));
CHECK(isArray);
CHECK(JS_GetProperty(cx, obj, "length", &v2));
CHECK(v2.isInt32(0));
CHECK(Parse(cx, "[1]", &v));
CHECK(v.isObject());
obj = &v.toObject();
CHECK(JS::IsArrayObject(cx, obj, &isArray));
CHECK(isArray);
CHECK(JS_GetProperty(cx, obj, "0", &v2));
CHECK(v2.isInt32(1));
CHECK(JS_GetProperty(cx, obj, "length", &v2));
CHECK(v2.isInt32(1));
// Objects
CHECK(Parse(cx, "{}", &v));
CHECK(v.isObject());
obj = &v.toObject();
CHECK(JS::IsArrayObject(cx, obj, &isArray));
CHECK(!isArray);
CHECK(Parse(cx, "{ \"f\": 17 }", &v));
CHECK(v.isObject());
obj = &v.toObject();
CHECK(JS::IsArrayObject(cx, obj, &isArray));
CHECK(!isArray);
CHECK(JS_GetProperty(cx, obj, "f", &v2));
CHECK(v2.isInt32(17));
return true;
}
template <size_t N>
static JSLinearString* NewString(JSContext* cx, const char16_t (&chars)[N]) {
return js::NewStringCopyN<CanGC>(cx, chars, N);
}
template <size_t N>
inline bool Parse(JSContext* cx, const char (&input)[N],
JS::MutableHandleValue vp) {
AutoInflatedString str(cx);
str = input;
CHECK(JS_ParseJSON(cx, str.chars(), str.length(), vp));
return true;
}
template <size_t N>
inline bool TryParse(JSContext* cx, const char (&input)[N],
JS::HandleValue expected) {
AutoInflatedString str(cx);
RootedValue v(cx);
str = input;
CHECK(JS_ParseJSON(cx, str.chars(), str.length(), &v));
CHECK_SAME(v, expected);
return true;
}
END_TEST(testParseJSON_success)
BEGIN_TEST(testParseJSON_error) {
CHECK(Error(cx, "", 1, 1));
CHECK(Error(cx, "\n", 2, 1));
CHECK(Error(cx, "\r", 2, 1));
CHECK(Error(cx, "\r\n", 2, 1));
CHECK(Error(cx, "[", 1, 2));
CHECK(Error(cx, "[,]", 1, 2));
CHECK(Error(cx, "[1,]", 1, 4));
CHECK(Error(cx, "{a:2}", 1, 2));
CHECK(Error(cx, "{\"a\":2,}", 1, 8));
CHECK(Error(cx, "]", 1, 1));
CHECK(Error(cx, "\"", 1, 2));
CHECK(Error(cx, "{]", 1, 2));
CHECK(Error(cx, "[}", 1, 2));
CHECK(Error(cx, "'wrongly-quoted string'", 1, 1));
CHECK(Error(cx, "{\"a\":2 \n b:3}", 2, 2));
CHECK(Error(cx, "\n[", 2, 2));
CHECK(Error(cx, "\n[,]", 2, 2));
CHECK(Error(cx, "\n[1,]", 2, 4));
CHECK(Error(cx, "\n{a:2}", 2, 2));
CHECK(Error(cx, "\n{\"a\":2,}", 2, 8));
CHECK(Error(cx, "\n]", 2, 1));
CHECK(Error(cx, "\"bad string\n\"", 1, 12));
CHECK(Error(cx, "\r'wrongly-quoted string'", 2, 1));
CHECK(Error(cx, "\n\"", 2, 2));
CHECK(Error(cx, "\n{]", 2, 2));
CHECK(Error(cx, "\n[}", 2, 2));
CHECK(Error(cx, "{\"a\":[2,3],\n\"b\":,5,6}", 2, 5));
CHECK(Error(cx, "{\"a\":2 \r b:3}", 2, 2));
CHECK(Error(cx, "\r[", 2, 2));
CHECK(Error(cx, "\r[,]", 2, 2));
CHECK(Error(cx, "\r[1,]", 2, 4));
CHECK(Error(cx, "\r{a:2}", 2, 2));
CHECK(Error(cx, "\r{\"a\":2,}", 2, 8));
CHECK(Error(cx, "\r]", 2, 1));
CHECK(Error(cx, "\"bad string\r\"", 1, 12));
CHECK(Error(cx, "\r'wrongly-quoted string'", 2, 1));
CHECK(Error(cx, "\r\"", 2, 2));
CHECK(Error(cx, "\r{]", 2, 2));
CHECK(Error(cx, "\r[}", 2, 2));
CHECK(Error(cx, "{\"a\":[2,3],\r\"b\":,5,6}", 2, 5));
CHECK(Error(cx, "{\"a\":2 \r\n b:3}", 2, 2));
CHECK(Error(cx, "\r\n[", 2, 2));
CHECK(Error(cx, "\r\n[,]", 2, 2));
CHECK(Error(cx, "\r\n[1,]", 2, 4));
CHECK(Error(cx, "\r\n{a:2}", 2, 2));
CHECK(Error(cx, "\r\n{\"a\":2,}", 2, 8));
CHECK(Error(cx, "\r\n]", 2, 1));
CHECK(Error(cx, "\"bad string\r\n\"", 1, 12));
CHECK(Error(cx, "\r\n'wrongly-quoted string'", 2, 1));
CHECK(Error(cx, "\r\n\"", 2, 2));
CHECK(Error(cx, "\r\n{]", 2, 2));
CHECK(Error(cx, "\r\n[}", 2, 2));
CHECK(Error(cx, "{\"a\":[2,3],\r\n\"b\":,5,6}", 2, 5));
CHECK(Error(cx, "\n\"bad string\n\"", 2, 12));
CHECK(Error(cx, "\r\"bad string\r\"", 2, 12));
CHECK(Error(cx, "\r\n\"bad string\r\n\"", 2, 12));
CHECK(Error(cx, "{\n\"a\":[2,3],\r\"b\":,5,6}", 3, 5));
CHECK(Error(cx, "{\r\"a\":[2,3],\n\"b\":,5,6}", 3, 5));
CHECK(Error(cx, "[\"\\t\\q", 1, 6));
CHECK(Error(cx, "[\"\\t\x00", 1, 5));
CHECK(Error(cx, "[\"\\t\x01", 1, 5));
CHECK(Error(cx, "[\"\\t\\\x00", 1, 6));
CHECK(Error(cx, "[\"\\t\\\x01", 1, 6));
// Unicode escape errors are messy. The first bad character could be
// non-hexadecimal, or it could be absent entirely. Include tests where
// there's a bad character, followed by zero to as many characters as are
// needed to form a complete Unicode escape sequence, plus one. (The extra
// characters beyond are valuable because our implementation checks for
// too-few subsequent characters first, before checking for subsequent
// non-hexadecimal characters. So \u<END>, \u0<END>, \u00<END>, and
// \u000<END> are all *detected* as invalid by the same code path, but the
// process of computing the first invalid character follows a different
// code path for each. And \uQQQQ, \u0QQQ, \u00QQ, and \u000Q are detected
// as invalid by the same code path [ignoring which precise subexpression
// triggers failure of a single condition], but the computation of the
// first invalid character follows a different code path for each.)
CHECK(Error(cx, "[\"\\t\\u", 1, 7));
CHECK(Error(cx, "[\"\\t\\uZ", 1, 7));
CHECK(Error(cx, "[\"\\t\\uZZ", 1, 7));
CHECK(Error(cx, "[\"\\t\\uZZZ", 1, 7));
CHECK(Error(cx, "[\"\\t\\uZZZZ", 1, 7));
CHECK(Error(cx, "[\"\\t\\uZZZZZ", 1, 7));
CHECK(Error(cx, "[\"\\t\\u0", 1, 8));
CHECK(Error(cx, "[\"\\t\\u0Z", 1, 8));
CHECK(Error(cx, "[\"\\t\\u0ZZ", 1, 8));
CHECK(Error(cx, "[\"\\t\\u0ZZZ", 1, 8));
CHECK(Error(cx, "[\"\\t\\u0ZZZZ", 1, 8));
CHECK(Error(cx, "[\"\\t\\u00", 1, 9));
CHECK(Error(cx, "[\"\\t\\u00Z", 1, 9));
CHECK(Error(cx, "[\"\\t\\u00ZZ", 1, 9));
CHECK(Error(cx, "[\"\\t\\u00ZZZ", 1, 9));
CHECK(Error(cx, "[\"\\t\\u000", 1, 10));
CHECK(Error(cx, "[\"\\t\\u000Z", 1, 10));
CHECK(Error(cx, "[\"\\t\\u000ZZ", 1, 10));
return true;
}
template <size_t N>
inline bool Error(JSContext* cx, const char (&input)[N], uint32_t expectedLine,
uint32_t expectedColumn) {
AutoInflatedString str(cx);
RootedValue dummy(cx);
str = input;
bool ok = JS_ParseJSON(cx, str.chars(), str.length(), &dummy);
CHECK(!ok);
JS::ExceptionStack exnStack(cx);
CHECK(StealPendingExceptionStack(cx, &exnStack));
JS::ErrorReportBuilder report(cx);
CHECK(report.init(cx, exnStack, JS::ErrorReportBuilder::WithSideEffects));
CHECK(report.report()->errorNumber == JSMSG_JSON_BAD_PARSE);
UniqueChars lineAndColumnASCII =
JS_smprintf("line %d column %d", expectedLine, expectedColumn);
CHECK(strstr(report.toStringResult().c_str(), lineAndColumnASCII.get()) !=
nullptr);
/* We do not execute JS, so there should be no exception thrown. */
CHECK(!JS_IsExceptionPending(cx));
return true;
}
END_TEST(testParseJSON_error)
static bool Censor(JSContext* cx, unsigned argc, JS::Value* vp) {
JS::CallArgs args = JS::CallArgsFromVp(argc, vp);
MOZ_RELEASE_ASSERT(args.length() == 2);
MOZ_RELEASE_ASSERT(args[0].isString());
args.rval().setNull();
return true;
}
BEGIN_TEST(testParseJSON_reviver) {
JSFunction* fun = JS_NewFunction(cx, Censor, 0, 0, "censor");
CHECK(fun);
JS::RootedValue filter(cx, JS::ObjectValue(*JS_GetFunctionObject(fun)));
CHECK(TryParse(cx, "true", filter));
CHECK(TryParse(cx, "false", filter));
CHECK(TryParse(cx, "null", filter));
CHECK(TryParse(cx, "1", filter));
CHECK(TryParse(cx, "1.75", filter));
CHECK(TryParse(cx, "[]", filter));
CHECK(TryParse(cx, "[1]", filter));
CHECK(TryParse(cx, "{}", filter));
return true;
}
template <size_t N>
inline bool TryParse(JSContext* cx, const char (&input)[N],
JS::HandleValue filter) {
AutoInflatedString str(cx);
JS::RootedValue v(cx);
str = input;
CHECK(JS_ParseJSONWithReviver(cx, str.chars(), str.length(), filter, &v));
CHECK(v.isNull());
return true;
}
END_TEST(testParseJSON_reviver)