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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 "builtin/TestingUtility.h"
#include <stdint.h> // uint32_t
#include "jsapi.h" // JS_NewPlainObject, JS_WrapValue
#include "frontend/CompilationStencil.h" // js::frontend::CompilationStencil
#include "js/CharacterEncoding.h" // JS_EncodeStringToUTF8
#include "js/ColumnNumber.h" // JS::ColumnNumberOneOrigin
#include "js/CompileOptions.h" // JS::CompileOptions
#include "js/Conversions.h" // JS::ToBoolean, JS::ToString, JS::ToUint32, JS::ToInt32
#include "js/PropertyAndElement.h" // JS_GetProperty, JS_DefineProperty
#include "js/PropertyDescriptor.h" // JSPROP_ENUMERATE
#include "js/RealmOptions.h" // JS::RealmBehaviors
#include "js/RootingAPI.h" // JS::Rooted, JS::Handle
#include "js/Utility.h" // JS::UniqueChars
#include "js/Value.h" // JS::Value, JS::StringValue
#include "vm/JSContext.h" // JS::ReportUsageErrorASCII
#include "vm/JSScript.h"
#include "vm/Realm.h" // JS::Realm
bool js::ParseCompileOptions(JSContext* cx, JS::CompileOptions& options,
JS::Handle<JSObject*> opts,
JS::UniqueChars* fileNameBytes) {
JS::Rooted<JS::Value> v(cx);
JS::Rooted<JSString*> s(cx);
if (!JS_GetProperty(cx, opts, "isRunOnce", &v)) {
return false;
}
if (!v.isUndefined()) {
options.setIsRunOnce(JS::ToBoolean(v));
}
if (!JS_GetProperty(cx, opts, "noScriptRval", &v)) {
return false;
}
if (!v.isUndefined()) {
options.setNoScriptRval(JS::ToBoolean(v));
}
if (!JS_GetProperty(cx, opts, "fileName", &v)) {
return false;
}
if (v.isNull()) {
options.setFile(nullptr);
} else if (!v.isUndefined()) {
s = JS::ToString(cx, v);
if (!s) {
return false;
}
if (fileNameBytes) {
*fileNameBytes = JS_EncodeStringToUTF8(cx, s);
if (!*fileNameBytes) {
return false;
}
options.setFile(fileNameBytes->get());
}
}
if (!JS_GetProperty(cx, opts, "skipFileNameValidation", &v)) {
return false;
}
if (!v.isUndefined()) {
options.setSkipFilenameValidation(JS::ToBoolean(v));
}
if (!JS_GetProperty(cx, opts, "lineNumber", &v)) {
return false;
}
if (!v.isUndefined()) {
uint32_t u;
if (!JS::ToUint32(cx, v, &u)) {
return false;
}
options.setLine(u);
}
if (!JS_GetProperty(cx, opts, "columnNumber", &v)) {
return false;
}
if (!v.isUndefined()) {
int32_t c;
if (!JS::ToInt32(cx, v, &c)) {
return false;
}
if (c < 1) {
c = 1;
}
options.setColumn(JS::ColumnNumberOneOrigin(c));
}
if (!JS_GetProperty(cx, opts, "sourceIsLazy", &v)) {
return false;
}
if (v.isBoolean()) {
options.setSourceIsLazy(v.toBoolean());
}
if (!JS_GetProperty(cx, opts, "forceFullParse", &v)) {
return false;
}
bool forceFullParseIsSet = !v.isUndefined();
if (v.isBoolean() && v.toBoolean()) {
options.setForceFullParse();
}
if (!JS_GetProperty(cx, opts, "eagerDelazificationStrategy", &v)) {
return false;
}
if (forceFullParseIsSet && !v.isUndefined()) {
JS_ReportErrorASCII(
cx, "forceFullParse and eagerDelazificationStrategy are both set.");
return false;
}
if (v.isString()) {
s = JS::ToString(cx, v);
if (!s) {
return false;
}
JSLinearString* str = JS_EnsureLinearString(cx, s);
if (!str) {
return false;
}
bool found = false;
JS::DelazificationOption strategy = JS::DelazificationOption::OnDemandOnly;
#define MATCH_AND_SET_STRATEGY_(NAME) \
if (!found && JS_LinearStringEqualsLiteral(str, #NAME)) { \
strategy = JS::DelazificationOption::NAME; \
found = true; \
}
FOREACH_DELAZIFICATION_STRATEGY(MATCH_AND_SET_STRATEGY_);
#undef MATCH_AND_SET_STRATEGY_
#undef FOR_STRATEGY_NAMES
if (!found) {
JS_ReportErrorASCII(cx,
"eagerDelazificationStrategy does not match any "
"DelazificationOption.");
return false;
}
options.setEagerDelazificationStrategy(strategy);
}
return true;
}
bool js::ParseSourceOptions(JSContext* cx, JS::Handle<JSObject*> opts,
JS::MutableHandle<JSString*> displayURL,
JS::MutableHandle<JSString*> sourceMapURL) {
JS::Rooted<JS::Value> v(cx);
if (!JS_GetProperty(cx, opts, "displayURL", &v)) {
return false;
}
if (!v.isUndefined()) {
displayURL.set(ToString(cx, v));
if (!displayURL) {
return false;
}
}
if (!JS_GetProperty(cx, opts, "sourceMapURL", &v)) {
return false;
}
if (!v.isUndefined()) {
sourceMapURL.set(ToString(cx, v));
if (!sourceMapURL) {
return false;
}
}
return true;
}
bool js::SetSourceOptions(JSContext* cx, FrontendContext* fc,
ScriptSource* source,
JS::Handle<JSString*> displayURL,
JS::Handle<JSString*> sourceMapURL) {
if (displayURL && !source->hasDisplayURL()) {
JS::UniqueTwoByteChars chars = JS_CopyStringCharsZ(cx, displayURL);
if (!chars) {
return false;
}
if (!source->setDisplayURL(fc, std::move(chars))) {
return false;
}
}
if (sourceMapURL && !source->hasSourceMapURL()) {
JS::UniqueTwoByteChars chars = JS_CopyStringCharsZ(cx, sourceMapURL);
if (!chars) {
return false;
}
if (!source->setSourceMapURL(fc, std::move(chars))) {
return false;
}
}
return true;
}
JSObject* js::CreateScriptPrivate(JSContext* cx,
JS::Handle<JSString*> path /* = nullptr */) {
JS::Rooted<JSObject*> info(cx, JS_NewPlainObject(cx));
if (!info) {
return nullptr;
}
if (path) {
JS::Rooted<JS::Value> pathValue(cx, JS::StringValue(path));
if (!JS_DefineProperty(cx, info, "path", pathValue, JSPROP_ENUMERATE)) {
return nullptr;
}
}
return info;
}
bool js::ParseDebugMetadata(JSContext* cx, JS::Handle<JSObject*> opts,
JS::MutableHandle<JS::Value> privateValue,
JS::MutableHandle<JSString*> elementAttributeName) {
JS::Rooted<JS::Value> v(cx);
JS::Rooted<JSString*> s(cx);
if (!JS_GetProperty(cx, opts, "element", &v)) {
return false;
}
if (v.isObject()) {
JS::Rooted<JSObject*> infoObject(cx, CreateScriptPrivate(cx));
if (!infoObject) {
return false;
}
JS::Rooted<JS::Value> elementValue(cx, v);
if (!JS_WrapValue(cx, &elementValue)) {
return false;
}
if (!JS_DefineProperty(cx, infoObject, "element", elementValue, 0)) {
return false;
}
privateValue.set(JS::ObjectValue(*infoObject));
}
if (!JS_GetProperty(cx, opts, "elementAttributeName", &v)) {
return false;
}
if (!v.isUndefined()) {
s = ToString(cx, v);
if (!s) {
return false;
}
elementAttributeName.set(s);
}
return true;
}
JS::UniqueChars js::StringToLocale(JSContext* cx, JS::Handle<JSObject*> callee,
JS::Handle<JSString*> str_) {
Rooted<JSLinearString*> str(cx, str_->ensureLinear(cx));
if (!str) {
return nullptr;
}
if (!StringIsAscii(str)) {
ReportUsageErrorASCII(cx, callee,
"First argument contains non-ASCII characters");
return nullptr;
}
UniqueChars locale = JS_EncodeStringToASCII(cx, str);
if (!locale) {
return nullptr;
}
bool containsOnlyValidBCP47Characters =
mozilla::IsAsciiAlpha(locale[0]) &&
std::all_of(locale.get(), locale.get() + str->length(), [](auto c) {
return mozilla::IsAsciiAlphanumeric(c) || c == '-';
});
if (!containsOnlyValidBCP47Characters) {
ReportUsageErrorASCII(cx, callee,
"First argument should be a BCP47 language tag");
return nullptr;
}
return locale;
}
bool js::ValidateLazinessOfStencilAndGlobal(
JSContext* cx, const js::frontend::CompilationStencil& stencil) {
if (cx->realm()->behaviors().discardSource() && stencil.canLazilyParse) {
JS_ReportErrorASCII(cx,
"Stencil compiled with with lazy parse option cannot "
"be used in a realm with discardSource");
return false;
}
return true;
}
bool js::ValidateModuleCompileOptions(JSContext* cx,
JS::CompileOptions& options) {
if (options.lineno == 0) {
JS_ReportErrorASCII(cx, "Module cannot be compiled with lineNumber == 0");
return false;
}
if (!options.filename()) {
JS_ReportErrorASCII(cx, "Module should have filename");
return false;
}
return true;
}