Regis Crelier
ba69c8a898
the error (it was previously only printed for types with identical names). Cleanup and simplify construction of type errors. R=hausner@google.com, srdjan@google.com Review URL: https://codereview.chromium.org/1778133002 .
138 lines
5.3 KiB
C++
138 lines
5.3 KiB
C++
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#include "vm/bootstrap_natives.h"
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#include "vm/exceptions.h"
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#include "vm/object_store.h"
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#include "vm/runtime_entry.h"
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#include "vm/stack_frame.h"
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namespace dart {
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// Allocate and throw a new AssertionError.
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// Arg0: index of the first token of the failed assertion.
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// Arg1: index of the first token after the failed assertion.
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// Return value: none, throws an exception.
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DEFINE_NATIVE_ENTRY(AssertionError_throwNew, 2) {
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// No need to type check the arguments. This function can only be called
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// internally from the VM.
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const TokenPosition assertion_start =
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TokenPosition(Smi::CheckedHandle(arguments->NativeArgAt(0)).Value());
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const TokenPosition assertion_end =
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TokenPosition(Smi::CheckedHandle(arguments->NativeArgAt(1)).Value());
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const Array& args = Array::Handle(Array::New(4));
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DartFrameIterator iterator;
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iterator.NextFrame(); // Skip native call.
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const Script& script = Script::Handle(Exceptions::GetCallerScript(&iterator));
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// Initialize argument 'failed_assertion' with source snippet.
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intptr_t from_line, from_column;
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script.GetTokenLocation(assertion_start, &from_line, &from_column);
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intptr_t to_line, to_column;
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script.GetTokenLocation(assertion_end, &to_line, &to_column);
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// The snippet will extract the correct assertion code even if the source
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// is generated.
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args.SetAt(0, String::Handle(
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script.GetSnippet(from_line, from_column, to_line, to_column)));
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// Initialize location arguments starting at position 1.
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// Do not set a column if the source has been generated as it will be wrong.
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args.SetAt(1, String::Handle(script.url()));
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args.SetAt(2, Smi::Handle(Smi::New(from_line)));
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args.SetAt(3, Smi::Handle(Smi::New(script.HasSource() ? from_column : -1)));
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Exceptions::ThrowByType(Exceptions::kAssertion, args);
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UNREACHABLE();
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return Object::null();
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}
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// Allocate and throw a new TypeError or CastError.
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// Arg0: index of the token of the failed type check.
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// Arg1: src value.
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// Arg2: dst type.
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// Arg3: dst name.
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// Arg4: type error message.
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// Return value: none, throws an exception.
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DEFINE_NATIVE_ENTRY(TypeError_throwNew, 5) {
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// No need to type check the arguments. This function can only be called
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// internally from the VM.
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const TokenPosition location =
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TokenPosition(Smi::CheckedHandle(arguments->NativeArgAt(0)).Value());
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const Instance& src_value =
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Instance::CheckedHandle(arguments->NativeArgAt(1));
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const AbstractType& dst_type =
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AbstractType::CheckedHandle(arguments->NativeArgAt(2));
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const String& dst_name = String::CheckedHandle(arguments->NativeArgAt(3));
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const String& error_msg = String::CheckedHandle(arguments->NativeArgAt(4));
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const AbstractType& src_type = AbstractType::Handle(src_value.GetType());
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Exceptions::CreateAndThrowTypeError(
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location, src_type, dst_type, dst_name, error_msg);
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UNREACHABLE();
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return Object::null();
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}
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// Allocate and throw a new FallThroughError.
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// Arg0: index of the case clause token into which we fall through.
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// Return value: none, throws an exception.
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DEFINE_NATIVE_ENTRY(FallThroughError_throwNew, 1) {
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GET_NON_NULL_NATIVE_ARGUMENT(Smi, smi_pos, arguments->NativeArgAt(0));
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TokenPosition fallthrough_pos = TokenPosition(smi_pos.Value());
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const Array& args = Array::Handle(Array::New(2));
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// Initialize 'url' and 'line' arguments.
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DartFrameIterator iterator;
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iterator.NextFrame(); // Skip native call.
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const Script& script = Script::Handle(Exceptions::GetCallerScript(&iterator));
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args.SetAt(0, String::Handle(script.url()));
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intptr_t line;
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script.GetTokenLocation(fallthrough_pos, &line, NULL);
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args.SetAt(1, Smi::Handle(Smi::New(line)));
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Exceptions::ThrowByType(Exceptions::kFallThrough, args);
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UNREACHABLE();
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return Object::null();
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}
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// Allocate and throw a new AbstractClassInstantiationError.
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// Arg0: Token position of allocation statement.
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// Arg1: class name of the abstract class that cannot be instantiated.
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// Return value: none, throws an exception.
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DEFINE_NATIVE_ENTRY(AbstractClassInstantiationError_throwNew, 2) {
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GET_NON_NULL_NATIVE_ARGUMENT(Smi, smi_pos, arguments->NativeArgAt(0));
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GET_NON_NULL_NATIVE_ARGUMENT(String, class_name, arguments->NativeArgAt(1));
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TokenPosition error_pos = TokenPosition(smi_pos.Value());
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const Array& args = Array::Handle(Array::New(3));
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// Initialize 'className', 'url' and 'line' arguments.
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DartFrameIterator iterator;
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iterator.NextFrame(); // Skip native call.
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const Script& script = Script::Handle(Exceptions::GetCallerScript(&iterator));
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args.SetAt(0, class_name);
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args.SetAt(1, String::Handle(script.url()));
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intptr_t line;
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script.GetTokenLocation(error_pos, &line, NULL);
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args.SetAt(2, Smi::Handle(Smi::New(line)));
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Exceptions::ThrowByType(Exceptions::kAbstractClassInstantiation, args);
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UNREACHABLE();
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return Object::null();
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}
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// Rethrow an error with a stacktrace.
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DEFINE_NATIVE_ENTRY(Async_rethrow, 2) {
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GET_NON_NULL_NATIVE_ARGUMENT(Instance, error, arguments->NativeArgAt(0));
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GET_NON_NULL_NATIVE_ARGUMENT(Instance, stacktrace, arguments->NativeArgAt(1));
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Exceptions::ReThrow(thread, error, stacktrace);
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return Object::null();
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}
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} // namespace dart
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