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// Copyright 2015 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "src/parsing/pending-compilation-error-handler.h"
#include "src/ast/ast-value-factory.h"
#include "src/base/export-template.h"
#include "src/base/logging.h"
#include "src/debug/debug.h"
#include "src/execution/isolate.h"
#include "src/execution/messages.h"
#include "src/handles/handles.h"
#include "src/heap/local-heap-inl.h"
#include "src/objects/objects-inl.h"
namespace v8 {
namespace internal {
void PendingCompilationErrorHandler::MessageDetails::SetString(
Handle<String> string, Isolate* isolate) {
DCHECK_NE(type_, kMainThreadHandle);
type_ = kMainThreadHandle;
arg_handle_ = string;
}
void PendingCompilationErrorHandler::MessageDetails::SetString(
Handle<String> string, LocalIsolate* isolate) {
DCHECK_NE(type_, kMainThreadHandle);
type_ = kMainThreadHandle;
arg_handle_ = isolate->heap()->NewPersistentHandle(string);
}
template <typename LocalIsolate>
void PendingCompilationErrorHandler::MessageDetails::Prepare(
LocalIsolate* isolate) {
switch (type_) {
case kAstRawString:
return SetString(arg_->string(), isolate);
case kNone:
case kConstCharString:
// We can delay allocation until ArgumentString(isolate).
// TODO(leszeks): We don't actually have to transfer this string, since
// it's a root.
return;
case kMainThreadHandle:
// The message details might already be prepared, so skip them if this is
// the case.
return;
}
}
Handle<String> PendingCompilationErrorHandler::MessageDetails::ArgumentString(
Isolate* isolate) const {
switch (type_) {
case kMainThreadHandle:
return arg_handle_;
case kNone:
return isolate->factory()->undefined_string();
case kConstCharString:
return isolate->factory()
->NewStringFromUtf8(CStrVector(char_arg_), AllocationType::kOld)
.ToHandleChecked();
case kAstRawString:
UNREACHABLE();
}
}
MessageLocation PendingCompilationErrorHandler::MessageDetails::GetLocation(
Handle<Script> script) const {
return MessageLocation(script, start_position_, end_position_);
}
void PendingCompilationErrorHandler::ReportMessageAt(int start_position,
int end_position,
MessageTemplate message,
const char* arg) {
if (has_pending_error_) return;
has_pending_error_ = true;
error_details_ = MessageDetails(start_position, end_position, message, arg);
}
void PendingCompilationErrorHandler::ReportMessageAt(int start_position,
int end_position,
MessageTemplate message,
const AstRawString* arg) {
if (has_pending_error_) return;
has_pending_error_ = true;
error_details_ = MessageDetails(start_position, end_position, message, arg);
}
void PendingCompilationErrorHandler::ReportWarningAt(int start_position,
int end_position,
MessageTemplate message,
const char* arg) {
warning_messages_.emplace_front(
MessageDetails(start_position, end_position, message, arg));
}
template <typename LocalIsolate>
void PendingCompilationErrorHandler::PrepareWarnings(LocalIsolate* isolate) {
DCHECK(!has_pending_error());
for (MessageDetails& warning : warning_messages_) {
warning.Prepare(isolate);
}
}
template void PendingCompilationErrorHandler::PrepareWarnings(Isolate* isolate);
template void PendingCompilationErrorHandler::PrepareWarnings(
LocalIsolate* isolate);
void PendingCompilationErrorHandler::ReportWarnings(
Isolate* isolate, Handle<Script> script) const {
DCHECK(!has_pending_error());
for (const MessageDetails& warning : warning_messages_) {
MessageLocation location = warning.GetLocation(script);
Handle<String> argument = warning.ArgumentString(isolate);
Handle<JSMessageObject> message =
MessageHandler::MakeMessageObject(isolate, warning.message(), &location,
argument, Handle<FixedArray>::null());
message->set_error_level(v8::Isolate::kMessageWarning);
MessageHandler::ReportMessage(isolate, &location, message);
}
}
template <typename LocalIsolate>
void PendingCompilationErrorHandler::PrepareErrors(
LocalIsolate* isolate, AstValueFactory* ast_value_factory) {
if (stack_overflow()) return;
DCHECK(has_pending_error());
// Internalize ast values for throwing the pending error.
ast_value_factory->Internalize(isolate);
error_details_.Prepare(isolate);
}
template EXPORT_TEMPLATE_DEFINE(
V8_EXPORT_PRIVATE) void PendingCompilationErrorHandler::
PrepareErrors(Isolate* isolate, AstValueFactory* ast_value_factory);
template EXPORT_TEMPLATE_DEFINE(
V8_EXPORT_PRIVATE) void PendingCompilationErrorHandler::
PrepareErrors(LocalIsolate* isolate, AstValueFactory* ast_value_factory);
void PendingCompilationErrorHandler::ReportErrors(Isolate* isolate,
Handle<Script> script) const {
if (stack_overflow()) {
isolate->StackOverflow();
} else {
DCHECK(has_pending_error());
ThrowPendingError(isolate, script);
}
}
void PendingCompilationErrorHandler::ThrowPendingError(
Isolate* isolate, Handle<Script> script) const {
if (!has_pending_error_) return;
MessageLocation location = error_details_.GetLocation(script);
Handle<String> argument = error_details_.ArgumentString(isolate);
isolate->debug()->OnCompileError(script);
Factory* factory = isolate->factory();
Handle<JSObject> error =
factory->NewSyntaxError(error_details_.message(), argument);
isolate->ThrowAt(error, &location);
}
Handle<String> PendingCompilationErrorHandler::FormatErrorMessageForTest(
Isolate* isolate) {
error_details_.Prepare(isolate);
return MessageFormatter::Format(isolate, error_details_.message(),
error_details_.ArgumentString(isolate));
}
} // namespace internal
} // namespace v8
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