blob: 1fd86bd3dde612c158bf2c670775cdaef7a7e103 [file] [log] [blame]
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
// part of "core_patch.dart";
@patch
class Error {
@patch
static String _objectToString(Object object) {
return Object._toString(object);
}
@patch
static String _stringToSafeString(String string) {
return json.encode(string);
}
@patch
StackTrace get stackTrace => _stackTrace;
@pragma("vm:entry-point")
StackTrace _stackTrace;
}
class _AssertionError extends Error implements AssertionError {
@pragma("vm:entry-point")
_AssertionError._create(
this._failedAssertion, this._url, this._line, this._column, this.message);
// AssertionError_throwNew in errors.cc fishes the assertion source code
// out of the script. It expects a Dart stack frame from class
// _AssertionError. Thus we need a Dart stub that calls the native code.
@pragma("vm:entry-point")
static _throwNew(int assertionStart, int assertionEnd, Object message) {
_doThrowNew(assertionStart, assertionEnd, message);
}
static _doThrowNew(int assertionStart, int assertionEnd, Object message)
native "AssertionError_throwNew";
@pragma("vm:entry-point")
static _evaluateAssertion(condition) {
if (identical(condition, true) || identical(condition, false)) {
return condition;
}
if (condition is _Closure) {
return (condition as dynamic)();
}
if (condition is Function) {
condition = condition();
}
return condition;
}
String get _messageString {
if (message == null) return "is not true.";
if (message is String) return message;
return Error.safeToString(message);
}
String toString() {
if (_url == null) {
if (message == null) return _failedAssertion?.trim();
return "'${_failedAssertion?.trim()}': $_messageString";
}
var columnInfo = "";
if (_column > 0) {
// Only add column information if it is valid.
columnInfo = " pos $_column";
}
return "'$_url': Failed assertion: line $_line$columnInfo: "
"'$_failedAssertion': $_messageString";
}
final String _failedAssertion;
final String _url;
final int _line;
final int _column;
final Object message;
}
class _TypeError extends _AssertionError implements TypeError {
@pragma("vm:entry-point")
_TypeError._create(String url, int line, int column, String errorMsg)
: super._create("is assignable", url, line, column, errorMsg);
static _throwNew(int location, Object src_value, _Type dst_type,
String dst_name) native "TypeError_throwNew";
String toString() => super.message;
}
class _CastError extends Error implements CastError {
@pragma("vm:entry-point")
_CastError._create(this._url, this._line, this._column, this._errorMsg);
// A CastError is allocated by TypeError._throwNew() when dst_name equals
// Symbols::InTypeCast().
String toString() => _errorMsg;
// Fields _url, _line, and _column are only used for debugging purposes.
final String _url;
final int _line;
final int _column;
final String _errorMsg;
}
@patch
class FallThroughError {
@patch
@pragma("vm:entry-point")
FallThroughError._create(String url, int line)
: _url = url,
_line = line;
static _throwNew(int case_clause_pos) native "FallThroughError_throwNew";
@patch
String toString() {
return "'$_url': Switch case fall-through at line $_line.";
}
// These new fields cannot be declared final, because a constructor exists
// in the original version of this patched class.
String _url;
int _line;
}
class _InternalError {
@pragma("vm:entry-point")
const _InternalError(this._msg);
String toString() => "InternalError: '${_msg}'";
final String _msg;
}
@patch
@pragma("vm:entry-point")
class UnsupportedError {
static _throwNew(String msg) {
throw new UnsupportedError(msg);
}
}
@patch
class CyclicInitializationError {
static _throwNew(String variableName) {
throw new CyclicInitializationError(variableName);
}
}
@patch
class AbstractClassInstantiationError {
@pragma("vm:entry-point")
AbstractClassInstantiationError._create(
this._className, this._url, this._line);
static _throwNew(int case_clause_pos, String className)
native "AbstractClassInstantiationError_throwNew";
@patch
String toString() {
return "Cannot instantiate abstract class $_className: "
"_url '$_url' line $_line";
}
// These new fields cannot be declared final, because a constructor exists
// in the original version of this patched class.
String _url;
int _line;
}
@patch
class NoSuchMethodError {
// Deprecated members to be removed.
Symbol _memberName;
List _arguments;
Map<Symbol, dynamic> _namedArguments;
List _existingArgumentNames;
final Object _receiver;
final _InvocationMirror _invocation;
@patch
NoSuchMethodError.withInvocation(Object receiver, Invocation invocation)
: _receiver = receiver,
_invocation = invocation as _InvocationMirror;
static void _throwNewInvocation(Object receiver, Invocation invocation) {
throw new NoSuchMethodError.withInvocation(receiver, invocation);
}
// The compiler emits a call to _throwNew when it cannot resolve a static
// method at compile time. The receiver is actually the literal class of the
// unresolved method.
@pragma("vm:entry-point")
static void _throwNew(Object receiver, String memberName, int invocation_type,
Object typeArguments, List arguments, List argumentNames) {
throw new NoSuchMethodError._withType(receiver, memberName, invocation_type,
typeArguments, arguments, argumentNames);
}
static void _throwNewIfNotLoaded(
_LibraryPrefix prefix,
Object receiver,
String memberName,
int invocation_type,
Object typeArguments,
List arguments,
List argumentNames) {
if (!prefix.isLoaded()) {
_throwNew(receiver, memberName, invocation_type, typeArguments, arguments,
argumentNames);
}
}
// TODO(regis): Deprecated member still used by dart2js to be removed.
// Remember the type from the invocation mirror or static compilation
// analysis when thrown directly with _throwNew. A negative value means
// that no information is available.
int _invocation_type;
// TODO(regis): Deprecated constructor still used by dart2js to be removed.
@patch
NoSuchMethodError(Object receiver, Symbol memberName,
List positionalArguments, Map<Symbol, dynamic> namedArguments,
[List existingArgumentNames = null])
: _receiver = receiver,
_invocation = null,
_memberName = memberName,
_arguments = positionalArguments,
_namedArguments = namedArguments,
_existingArgumentNames = existingArgumentNames,
_invocation_type = -1;
// Helper to build a map of named arguments.
static Map<Symbol, dynamic> _NamedArgumentsMap(
List arguments, List argumentNames) {
Map<Symbol, dynamic> namedArguments = new Map<Symbol, dynamic>();
int numPositionalArguments = arguments.length - argumentNames.length;
for (int i = 0; i < argumentNames.length; i++) {
var arg_value = arguments[numPositionalArguments + i];
namedArguments[new Symbol(argumentNames[i])] = arg_value;
}
return namedArguments;
}
// Constructor called from Exceptions::ThrowByType(kNoSuchMethod) and from
// _throwNew above, taking a TypeArguments object rather than an unpacked list
// of types, as well as a list of all arguments and a list of names, rather
// than a separate list of positional arguments and a map of named arguments.
@pragma("vm:entry-point")
NoSuchMethodError._withType(
this._receiver,
String memberName,
int invocation_type,
Object typeArguments,
List arguments,
List argumentNames)
: this._invocation = new _InvocationMirror._withType(
new Symbol(memberName),
invocation_type,
typeArguments != null
// TODO(33073): Use actual count of type arguments in place of 0.
? _InvocationMirror._unpackTypeArguments(typeArguments, 0)
: null,
argumentNames != null
? arguments.sublist(0, arguments.length - argumentNames.length)
: arguments,
argumentNames != null
? _NamedArgumentsMap(arguments, argumentNames)
: null);
static String _existingMethodSignature(Object receiver, String methodName,
int invocationType) native "NoSuchMethodError_existingMethodSignature";
@patch
String toString() {
// TODO(regis): Remove this null check once dart2js is updated.
if (_invocation == null) {
// Use deprecated version of toString.
return _toStringDeprecated();
}
String memberName =
internal.Symbol.computeUnmangledName(_invocation.memberName);
var level = (_invocation._type >> _InvocationMirror._LEVEL_SHIFT) &
_InvocationMirror._LEVEL_MASK;
var kind = _invocation._type & _InvocationMirror._KIND_MASK;
if (kind == _InvocationMirror._LOCAL_VAR) {
return "NoSuchMethodError: Cannot assign to final variable '$memberName'";
}
StringBuffer typeArgumentsBuf = null;
var typeArguments = _invocation.typeArguments;
if ((typeArguments != null) && (typeArguments.length > 0)) {
typeArgumentsBuf = new StringBuffer();
typeArgumentsBuf.write("<");
for (int i = 0; i < typeArguments.length; i++) {
if (i > 0) {
typeArgumentsBuf.write(", ");
}
typeArgumentsBuf.write(Error.safeToString(typeArguments[i]));
}
typeArgumentsBuf.write(">");
}
StringBuffer argumentsBuf = new StringBuffer();
var positionalArguments = _invocation.positionalArguments;
int argumentCount = 0;
if (positionalArguments != null) {
for (; argumentCount < positionalArguments.length; argumentCount++) {
if (argumentCount > 0) {
argumentsBuf.write(", ");
}
argumentsBuf
.write(Error.safeToString(positionalArguments[argumentCount]));
}
}
var namedArguments = _invocation.namedArguments;
if (namedArguments != null) {
namedArguments.forEach((Symbol key, var value) {
if (argumentCount > 0) {
argumentsBuf.write(", ");
}
argumentsBuf.write(internal.Symbol.computeUnmangledName(key));
argumentsBuf.write(": ");
argumentsBuf.write(Error.safeToString(value));
argumentCount++;
});
}
String existingSig =
_existingMethodSignature(_receiver, memberName, _invocation._type);
String argsMsg = existingSig != null ? " with matching arguments" : "";
String kindBuf;
if (kind >= 0 && kind < 5) {
kindBuf = (const [
"method",
"getter",
"setter",
"getter or setter",
"variable"
])[kind];
}
StringBuffer msgBuf = new StringBuffer("NoSuchMethodError: ");
bool is_type_call = false;
switch (level) {
case _InvocationMirror._DYNAMIC:
{
if (_receiver == null) {
if (existingSig != null) {
msgBuf.writeln("The null object does not have a $kindBuf "
"'$memberName'$argsMsg.");
} else {
msgBuf.writeln("The $kindBuf '$memberName' was called on null.");
}
} else {
if (_receiver is _Closure) {
msgBuf.writeln("Closure call with mismatched arguments: "
"function '$memberName'");
} else if (_receiver is _Type && memberName == "call") {
is_type_call = true;
String name = _receiver.toString();
msgBuf.writeln("Attempted to use type '$name' as a function. "
"Since types do not define a method 'call', this is not "
"possible. Did you intend to call the $name constructor and "
"forget the 'new' operator?");
} else {
msgBuf.writeln("Class '${_receiver.runtimeType}' has no instance "
"$kindBuf '$memberName'$argsMsg.");
}
}
break;
}
case _InvocationMirror._SUPER:
{
msgBuf.writeln("Super class of class '${_receiver.runtimeType}' has "
"no instance $kindBuf '$memberName'$argsMsg.");
memberName = "super.$memberName";
break;
}
case _InvocationMirror._STATIC:
{
msgBuf.writeln("No static $kindBuf '$memberName'$argsMsg "
"declared in class '$_receiver'.");
break;
}
case _InvocationMirror._CONSTRUCTOR:
{
msgBuf.writeln("No constructor '$memberName'$argsMsg declared "
"in class '$_receiver'.");
memberName = "new $memberName";
break;
}
case _InvocationMirror._TOP_LEVEL:
{
msgBuf.writeln("No top-level $kindBuf '$memberName'$argsMsg "
"declared.");
break;
}
}
if (level == _InvocationMirror._TOP_LEVEL) {
msgBuf.writeln("Receiver: top-level");
} else {
msgBuf.writeln("Receiver: ${Error.safeToString(_receiver)}");
}
if (kind == _InvocationMirror._METHOD) {
String m = is_type_call ? "$_receiver" : "$memberName";
msgBuf.write("Tried calling: $m");
if (typeArgumentsBuf != null) {
msgBuf.write(typeArgumentsBuf);
}
msgBuf.write("($argumentsBuf)");
} else if (argumentCount == 0) {
msgBuf.write("Tried calling: $memberName");
} else if (kind == _InvocationMirror._SETTER) {
msgBuf.write("Tried calling: $memberName$argumentsBuf");
} else {
msgBuf.write("Tried calling: $memberName = $argumentsBuf");
}
if (existingSig != null) {
msgBuf.write("\nFound: $memberName$existingSig");
}
return msgBuf.toString();
}
// TODO(regis): Remove this function once dart2js is updated.
String _toStringDeprecated() {
var level = (_invocation_type >> _InvocationMirror._LEVEL_SHIFT) &
_InvocationMirror._LEVEL_MASK;
var type = _invocation_type & _InvocationMirror._KIND_MASK;
String memberName = (_memberName == null)
? ""
: internal.Symbol.computeUnmangledName(_memberName);
if (type == _InvocationMirror._LOCAL_VAR) {
return "NoSuchMethodError: Cannot assign to final variable '$memberName'";
}
StringBuffer arguments = new StringBuffer();
int argumentCount = 0;
if (_arguments != null) {
for (; argumentCount < _arguments.length; argumentCount++) {
if (argumentCount > 0) {
arguments.write(", ");
}
arguments.write(Error.safeToString(_arguments[argumentCount]));
}
}
if (_namedArguments != null) {
_namedArguments.forEach((Symbol key, var value) {
if (argumentCount > 0) {
arguments.write(", ");
}
arguments.write(internal.Symbol.computeUnmangledName(key));
arguments.write(": ");
arguments.write(Error.safeToString(value));
argumentCount++;
});
}
bool args_mismatch = _existingArgumentNames != null;
String args_message = args_mismatch ? " with matching arguments" : "";
String type_str;
if (type >= 0 && type < 5) {
type_str = (const [
"method",
"getter",
"setter",
"getter or setter",
"variable"
])[type];
}
StringBuffer msg_buf = new StringBuffer("NoSuchMethodError: ");
bool is_type_call = false;
switch (level) {
case _InvocationMirror._DYNAMIC:
{
if (_receiver == null) {
if (args_mismatch) {
msg_buf.writeln("The null object does not have a $type_str "
"'$memberName'$args_message.");
} else {
msg_buf
.writeln("The $type_str '$memberName' was called on null.");
}
} else {
if (_receiver is _Closure) {
msg_buf.writeln("Closure call with mismatched arguments: "
"function '$memberName'");
} else if (_receiver is _Type && memberName == "call") {
is_type_call = true;
String name = _receiver.toString();
msg_buf.writeln("Attempted to use type '$name' as a function. "
"Since types do not define a method 'call', this is not "
"possible. Did you intend to call the $name constructor and "
"forget the 'new' operator?");
} else {
msg_buf
.writeln("Class '${_receiver.runtimeType}' has no instance "
"$type_str '$memberName'$args_message.");
}
}
break;
}
case _InvocationMirror._SUPER:
{
msg_buf.writeln("Super class of class '${_receiver.runtimeType}' has "
"no instance $type_str '$memberName'$args_message.");
memberName = "super.$memberName";
break;
}
case _InvocationMirror._STATIC:
{
msg_buf.writeln("No static $type_str '$memberName'$args_message "
"declared in class '$_receiver'.");
break;
}
case _InvocationMirror._CONSTRUCTOR:
{
msg_buf.writeln("No constructor '$memberName'$args_message declared "
"in class '$_receiver'.");
memberName = "new $memberName";
break;
}
case _InvocationMirror._TOP_LEVEL:
{
msg_buf.writeln("No top-level $type_str '$memberName'$args_message "
"declared.");
break;
}
}
if (level == _InvocationMirror._TOP_LEVEL) {
msg_buf.writeln("Receiver: top-level");
} else {
msg_buf.writeln("Receiver: ${Error.safeToString(_receiver)}");
}
if (type == _InvocationMirror._METHOD) {
String m = is_type_call ? "$_receiver" : "$memberName";
msg_buf.write("Tried calling: $m($arguments)");
} else if (argumentCount == 0) {
msg_buf.write("Tried calling: $memberName");
} else if (type == _InvocationMirror._SETTER) {
msg_buf.write("Tried calling: $memberName$arguments");
} else {
msg_buf.write("Tried calling: $memberName = $arguments");
}
if (args_mismatch) {
StringBuffer formalParameters = new StringBuffer();
for (int i = 0; i < _existingArgumentNames.length; i++) {
if (i > 0) {
formalParameters.write(", ");
}
formalParameters.write(_existingArgumentNames[i]);
}
msg_buf.write("\nFound: $memberName($formalParameters)");
}
return msg_buf.toString();
}
}
@pragma("vm:entry-point")
class _CompileTimeError extends Error {
final String _errorMsg;
_CompileTimeError(this._errorMsg);
String toString() => _errorMsg;
}
/// Used by Fasta to report a runtime error when a final field with an
/// initializer is also initialized in a generative constructor.
///
/// Note: in strong mode, this is a compile-time error and this class becomes
/// obsolete.
class _DuplicatedFieldInitializerError extends Error {
final String _name;
_DuplicatedFieldInitializerError(this._name);
toString() => "Error: field '$_name' is already initialized.";
}