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// Copyright 2006-2008 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// -------------------------------------------------------------------
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// Lazily initialized.
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var kVowelSounds = 0;
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var kCapitalVowelSounds = 0;
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function GetInstanceName(cons) {
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if (cons.length == 0) {
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return "";
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}
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var first = %StringToLowerCase(StringCharAt.call(cons, 0));
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if (kVowelSounds === 0) {
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kVowelSounds = {a: true, e: true, i: true, o: true, u: true, y: true};
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kCapitalVowelSounds = {a: true, e: true, i: true, o: true, u: true, h: true,
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f: true, l: true, m: true, n: true, r: true, s: true, x: true, y: true};
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}
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var vowel_mapping = kVowelSounds;
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if (cons.length > 1 && (StringCharAt.call(cons, 0) != first)) {
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// First char is upper case
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var second = %StringToLowerCase(StringCharAt.call(cons, 1));
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// Second char is upper case
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if (StringCharAt.call(cons, 1) != second) {
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vowel_mapping = kCapitalVowelSounds;
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}
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}
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var s = vowel_mapping[first] ? "an " : "a ";
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return s + cons;
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}
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var kMessages = 0;
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function FormatString(format, args) {
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var result = format;
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for (var i = 0; i < args.length; i++) {
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var str;
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try { str = ToDetailString(args[i]); }
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catch (e) { str = "#<error>"; }
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result = ArrayJoin.call(StringSplit.call(result, "%" + i), str);
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}
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return result;
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}
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function ToDetailString(obj) {
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if (obj != null && IS_OBJECT(obj) && obj.toString === $Object.prototype.toString) {
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var constructor = obj.constructor;
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if (!constructor) return ToString(obj);
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var constructorName = constructor.name;
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if (!constructorName) return ToString(obj);
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return "#<" + GetInstanceName(constructorName) + ">";
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} else {
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return ToString(obj);
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}
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}
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function MakeGenericError(constructor, type, args) {
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if (IS_UNDEFINED(args)) {
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args = [];
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}
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var e = new constructor(kAddMessageAccessorsMarker);
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e.type = type;
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e.arguments = args;
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return e;
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}
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/**
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* Setup the Script function and constructor.
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*/
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%FunctionSetInstanceClassName(Script, 'Script');
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%SetProperty(Script.prototype, 'constructor', Script, DONT_ENUM);
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%SetCode(Script, function(x) {
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// Script objects can only be created by the VM.
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throw new $Error("Not supported");
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});
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// Helper functions; called from the runtime system.
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function FormatMessage(message) {
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if (kMessages === 0) {
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kMessages = {
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// Error
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cyclic_proto: "Cyclic __proto__ value",
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// TypeError
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unexpected_token: "Unexpected token %0",
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unexpected_token_number: "Unexpected number",
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unexpected_token_string: "Unexpected string",
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unexpected_token_identifier: "Unexpected identifier",
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unexpected_eos: "Unexpected end of input",
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malformed_regexp: "Invalid regular expression: /%0/: %1",
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unterminated_regexp: "Invalid regular expression: missing /",
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regexp_flags: "Cannot supply flags when constructing one RegExp from another",
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invalid_lhs_in_assignment: "Invalid left-hand side in assignment",
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invalid_lhs_in_for_in: "Invalid left-hand side in for-in",
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invalid_lhs_in_postfix_op: "Invalid left-hand side expression in postfix operation",
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invalid_lhs_in_prefix_op: "Invalid left-hand side expression in prefix operation",
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multiple_defaults_in_switch: "More than one default clause in switch statement",
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newline_after_throw: "Illegal newline after throw",
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redeclaration: "%0 '%1' has already been declared",
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no_catch_or_finally: "Missing catch or finally after try",
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unknown_label: "Undefined label '%0'",
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uncaught_exception: "Uncaught %0",
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stack_trace: "Stack Trace:\n%0",
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called_non_callable: "%0 is not a function",
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undefined_method: "Object %1 has no method '%0'",
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property_not_function: "Property '%0' of object %1 is not a function",
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cannot_convert_to_primitive: "Cannot convert object to primitive value",
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not_constructor: "%0 is not a constructor",
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not_defined: "%0 is not defined",
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non_object_property_load: "Cannot read property '%0' of %1",
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non_object_property_store: "Cannot set property '%0' of %1",
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non_object_property_call: "Cannot call method '%0' of %1",
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with_expression: "%0 has no properties",
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illegal_invocation: "Illegal invocation",
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no_setter_in_callback: "Cannot set property %0 of %1 which has only a getter",
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apply_non_function: "Function.prototype.apply was called on %0, which is a %1 and not a function",
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apply_wrong_args: "Function.prototype.apply: Arguments list has wrong type",
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invalid_in_operator_use: "Cannot use 'in' operator to search for '%0' in %1",
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instanceof_function_expected: "Expecting a function in instanceof check, but got %0",
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instanceof_nonobject_proto: "Function has non-object prototype '%0' in instanceof check",
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null_to_object: "Cannot convert null to object",
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reduce_no_initial: "Reduce of empty array with no initial value",
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// RangeError
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invalid_array_length: "Invalid array length",
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stack_overflow: "Maximum call stack size exceeded",
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apply_overflow: "Function.prototype.apply cannot support %0 arguments",
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// SyntaxError
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unable_to_parse: "Parse error",
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duplicate_regexp_flag: "Duplicate RegExp flag %0",
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invalid_regexp: "Invalid RegExp pattern /%0/",
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illegal_break: "Illegal break statement",
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illegal_continue: "Illegal continue statement",
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illegal_return: "Illegal return statement",
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error_loading_debugger: "Error loading debugger",
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no_input_to_regexp: "No input to %0",
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result_not_primitive: "Result of %0 must be a primitive, was %1",
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invalid_json: "String '%0' is not valid JSON",
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circular_structure: "Converting circular structure to JSON"
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};
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}
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var format = kMessages[message.type];
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if (!format) return "<unknown message " + message.type + ">";
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return FormatString(format, message.args);
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}
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function GetLineNumber(message) {
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if (message.startPos == -1) return -1;
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var location = message.script.locationFromPosition(message.startPos, true);
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if (location == null) return -1;
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return location.line + 1;
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}
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// Returns the source code line containing the given source
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// position, or the empty string if the position is invalid.
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function GetSourceLine(message) {
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var location = message.script.locationFromPosition(message.startPos, true);
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if (location == null) return "";
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location.restrict();
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return location.sourceText();
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}
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function MakeTypeError(type, args) {
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return MakeGenericError($TypeError, type, args);
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}
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function MakeRangeError(type, args) {
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return MakeGenericError($RangeError, type, args);
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}
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function MakeSyntaxError(type, args) {
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return MakeGenericError($SyntaxError, type, args);
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}
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function MakeReferenceError(type, args) {
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return MakeGenericError($ReferenceError, type, args);
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}
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function MakeEvalError(type, args) {
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return MakeGenericError($EvalError, type, args);
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}
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function MakeError(type, args) {
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return MakeGenericError($Error, type, args);
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}
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/**
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* Find a line number given a specific source position.
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* @param {number} position The source position.
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* @return {number} 0 if input too small, -1 if input too large,
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else the line number.
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*/
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Script.prototype.lineFromPosition = function(position) {
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var lower = 0;
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var upper = this.lineCount() - 1;
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// We'll never find invalid positions so bail right away.
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if (position > this.line_ends[upper]) {
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return -1;
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}
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// This means we don't have to safe-guard indexing line_ends[i - 1].
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if (position <= this.line_ends[0]) {
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return 0;
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}
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// Binary search to find line # from position range.
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while (upper >= 1) {
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var i = (lower + upper) >> 1;
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if (position > this.line_ends[i]) {
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lower = i + 1;
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} else if (position <= this.line_ends[i - 1]) {
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upper = i - 1;
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} else {
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return i;
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}
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}
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return -1;
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}
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/**
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* Get information on a specific source position.
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* @param {number} position The source position
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* @param {boolean} include_resource_offset Set to true to have the resource
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* offset added to the location
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* @return {SourceLocation}
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* If line is negative or not in the source null is returned.
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*/
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Script.prototype.locationFromPosition = function (position,
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include_resource_offset) {
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var line = this.lineFromPosition(position);
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if (line == -1) return null;
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// Determine start, end and column.
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var start = line == 0 ? 0 : this.line_ends[line - 1] + 1;
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var end = this.line_ends[line];
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if (end > 0 && StringCharAt.call(this.source, end - 1) == '\r') end--;
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var column = position - start;
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// Adjust according to the offset within the resource.
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if (include_resource_offset) {
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line += this.line_offset;
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if (line == this.line_offset) {
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column += this.column_offset;
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}
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}
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return new SourceLocation(this, position, line, column, start, end);
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};
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/**
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* Get information on a specific source line and column possibly offset by a
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* fixed source position. This function is used to find a source position from
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* a line and column position. The fixed source position offset is typically
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* used to find a source position in a function based on a line and column in
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* the source for the function alone. The offset passed will then be the
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* start position of the source for the function within the full script source.
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* @param {number} opt_line The line within the source. Default value is 0
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* @param {number} opt_column The column in within the line. Default value is 0
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* @param {number} opt_offset_position The offset from the begining of the
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* source from where the line and column calculation starts. Default value is 0
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* @return {SourceLocation}
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* If line is negative or not in the source null is returned.
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*/
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Script.prototype.locationFromLine = function (opt_line, opt_column, opt_offset_position) {
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// Default is the first line in the script. Lines in the script is relative
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// to the offset within the resource.
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var line = 0;
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if (!IS_UNDEFINED(opt_line)) {
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line = opt_line - this.line_offset;
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}
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// Default is first column. If on the first line add the offset within the
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// resource.
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var column = opt_column || 0;
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if (line == 0) {
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column -= this.column_offset
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}
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var offset_position = opt_offset_position || 0;
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if (line < 0 || column < 0 || offset_position < 0) return null;
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if (line == 0) {
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return this.locationFromPosition(offset_position + column, false);
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} else {
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// Find the line where the offset position is located.
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var offset_line = this.lineFromPosition(offset_position);
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if (offset_line == -1 || offset_line + line >= this.lineCount()) {
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return null;
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}
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return this.locationFromPosition(this.line_ends[offset_line + line - 1] + 1 + column); // line > 0 here.
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}
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}
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/**
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* Get a slice of source code from the script. The boundaries for the slice is
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* specified in lines.
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* @param {number} opt_from_line The first line (zero bound) in the slice.
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* Default is 0
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* @param {number} opt_to_column The last line (zero bound) in the slice (non
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* inclusive). Default is the number of lines in the script
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* @return {SourceSlice} The source slice or null of the parameters where
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* invalid
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*/
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Script.prototype.sourceSlice = function (opt_from_line, opt_to_line) {
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var from_line = IS_UNDEFINED(opt_from_line) ? this.line_offset : opt_from_line;
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var to_line = IS_UNDEFINED(opt_to_line) ? this.line_offset + this.lineCount() : opt_to_line
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// Adjust according to the offset within the resource.
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|
from_line -= this.line_offset;
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to_line -= this.line_offset;
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|
if (from_line < 0) from_line = 0;
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|
if (to_line > this.lineCount()) to_line = this.lineCount();
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|
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|
// Check parameters.
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|
|
|
if (from_line >= this.lineCount() ||
|
|
|
|
to_line < 0 ||
|
|
|
|
from_line > to_line) {
|
|
|
|
return null;
|
|
|
|
}
|
|
|
|
|
|
|
|
var from_position = from_line == 0 ? 0 : this.line_ends[from_line - 1] + 1;
|
|
|
|
var to_position = to_line == 0 ? 0 : this.line_ends[to_line - 1] + 1;
|
|
|
|
|
|
|
|
// Return a source slice with line numbers re-adjusted to the resource.
|
|
|
|
return new SourceSlice(this, from_line + this.line_offset, to_line + this.line_offset,
|
|
|
|
from_position, to_position);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
Script.prototype.sourceLine = function (opt_line) {
|
|
|
|
// Default is the first line in the script. Lines in the script are relative
|
|
|
|
// to the offset within the resource.
|
|
|
|
var line = 0;
|
|
|
|
if (!IS_UNDEFINED(opt_line)) {
|
|
|
|
line = opt_line - this.line_offset;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Check parameter.
|
|
|
|
if (line < 0 || this.lineCount() <= line) {
|
|
|
|
return null;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Return the source line.
|
|
|
|
var start = line == 0 ? 0 : this.line_ends[line - 1] + 1;
|
|
|
|
var end = this.line_ends[line];
|
|
|
|
return StringSubstring.call(this.source, start, end);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Returns the number of source lines.
|
|
|
|
* @return {number}
|
|
|
|
* Number of source lines.
|
|
|
|
*/
|
|
|
|
Script.prototype.lineCount = function() {
|
|
|
|
// Return number of source lines.
|
|
|
|
return this.line_ends.length;
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Class for source location. A source location is a position within some
|
|
|
|
* source with the following properties:
|
|
|
|
* script : script object for the source
|
|
|
|
* line : source line number
|
|
|
|
* column : source column within the line
|
|
|
|
* position : position within the source
|
|
|
|
* start : position of start of source context (inclusive)
|
|
|
|
* end : position of end of source context (not inclusive)
|
|
|
|
* Source text for the source context is the character interval [start, end[. In
|
|
|
|
* most cases end will point to a newline character. It might point just past
|
|
|
|
* the final position of the source if the last source line does not end with a
|
|
|
|
* newline character.
|
|
|
|
* @param {Script} script The Script object for which this is a location
|
|
|
|
* @param {number} position Source position for the location
|
|
|
|
* @param {number} line The line number for the location
|
|
|
|
* @param {number} column The column within the line for the location
|
|
|
|
* @param {number} start Source position for start of source context
|
|
|
|
* @param {number} end Source position for end of source context
|
|
|
|
* @constructor
|
|
|
|
*/
|
|
|
|
function SourceLocation(script, position, line, column, start, end) {
|
|
|
|
this.script = script;
|
|
|
|
this.position = position;
|
|
|
|
this.line = line;
|
|
|
|
this.column = column;
|
|
|
|
this.start = start;
|
|
|
|
this.end = end;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
const kLineLengthLimit = 78;
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Restrict source location start and end positions to make the source slice
|
|
|
|
* no more that a certain number of characters wide.
|
|
|
|
* @param {number} opt_limit The with limit of the source text with a default
|
|
|
|
* of 78
|
|
|
|
* @param {number} opt_before The number of characters to prefer before the
|
|
|
|
* position with a default value of 10 less that the limit
|
|
|
|
*/
|
|
|
|
SourceLocation.prototype.restrict = function (opt_limit, opt_before) {
|
|
|
|
// Find the actual limit to use.
|
|
|
|
var limit;
|
|
|
|
var before;
|
|
|
|
if (!IS_UNDEFINED(opt_limit)) {
|
|
|
|
limit = opt_limit;
|
|
|
|
} else {
|
|
|
|
limit = kLineLengthLimit;
|
|
|
|
}
|
|
|
|
if (!IS_UNDEFINED(opt_before)) {
|
|
|
|
before = opt_before;
|
|
|
|
} else {
|
|
|
|
// If no before is specified center for small limits and perfer more source
|
|
|
|
// before the the position that after for longer limits.
|
|
|
|
if (limit <= 20) {
|
|
|
|
before = $floor(limit / 2);
|
|
|
|
} else {
|
|
|
|
before = limit - 10;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (before >= limit) {
|
|
|
|
before = limit - 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
// If the [start, end[ interval is too big we restrict
|
|
|
|
// it in one or both ends. We make sure to always produce
|
|
|
|
// restricted intervals of maximum allowed size.
|
|
|
|
if (this.end - this.start > limit) {
|
|
|
|
var start_limit = this.position - before;
|
|
|
|
var end_limit = this.position + limit - before;
|
|
|
|
if (this.start < start_limit && end_limit < this.end) {
|
|
|
|
this.start = start_limit;
|
|
|
|
this.end = end_limit;
|
|
|
|
} else if (this.start < start_limit) {
|
|
|
|
this.start = this.end - limit;
|
|
|
|
} else {
|
|
|
|
this.end = this.start + limit;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Get the source text for a SourceLocation
|
|
|
|
* @return {String}
|
|
|
|
* Source text for this location.
|
|
|
|
*/
|
|
|
|
SourceLocation.prototype.sourceText = function () {
|
|
|
|
return StringSubstring.call(this.script.source, this.start, this.end);
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Class for a source slice. A source slice is a part of a script source with
|
|
|
|
* the following properties:
|
|
|
|
* script : script object for the source
|
|
|
|
* from_line : line number for the first line in the slice
|
|
|
|
* to_line : source line number for the last line in the slice
|
|
|
|
* from_position : position of the first character in the slice
|
|
|
|
* to_position : position of the last character in the slice
|
|
|
|
* The to_line and to_position are not included in the slice, that is the lines
|
|
|
|
* in the slice are [from_line, to_line[. Likewise the characters in the slice
|
|
|
|
* are [from_position, to_position[.
|
|
|
|
* @param {Script} script The Script object for the source slice
|
|
|
|
* @param {number} from_line
|
|
|
|
* @param {number} to_line
|
|
|
|
* @param {number} from_position
|
|
|
|
* @param {number} to_position
|
|
|
|
* @constructor
|
|
|
|
*/
|
|
|
|
function SourceSlice(script, from_line, to_line, from_position, to_position) {
|
|
|
|
this.script = script;
|
|
|
|
this.from_line = from_line;
|
|
|
|
this.to_line = to_line;
|
|
|
|
this.from_position = from_position;
|
|
|
|
this.to_position = to_position;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Get the source text for a SourceSlice
|
|
|
|
* @return {String} Source text for this slice. The last line will include
|
|
|
|
* the line terminating characters (if any)
|
|
|
|
*/
|
|
|
|
SourceSlice.prototype.sourceText = function () {
|
|
|
|
return StringSubstring.call(this.script.source, this.from_position, this.to_position);
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
// Returns the offset of the given position within the containing
|
|
|
|
// line.
|
|
|
|
function GetPositionInLine(message) {
|
|
|
|
var location = message.script.locationFromPosition(message.startPos, false);
|
|
|
|
if (location == null) return -1;
|
|
|
|
location.restrict();
|
|
|
|
return message.startPos - location.start;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
function ErrorMessage(type, args, startPos, endPos, script, stackTrace) {
|
|
|
|
this.startPos = startPos;
|
|
|
|
this.endPos = endPos;
|
|
|
|
this.type = type;
|
|
|
|
this.args = args;
|
|
|
|
this.script = script;
|
|
|
|
this.stackTrace = stackTrace;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
function MakeMessage(type, args, startPos, endPos, script, stackTrace) {
|
|
|
|
return new ErrorMessage(type, args, startPos, endPos, script, stackTrace);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
function GetStackTraceLine(recv, fun, pos, isGlobal) {
|
|
|
|
return FormatSourcePosition(new CallSite(recv, fun, pos));
|
|
|
|
}
|
|
|
|
|
|
|
|
// ----------------------------------------------------------------------------
|
|
|
|
// Error implementation
|
|
|
|
|
|
|
|
// If this object gets passed to an error constructor the error will
|
|
|
|
// get an accessor for .message that constructs a descriptive error
|
|
|
|
// message on access.
|
|
|
|
var kAddMessageAccessorsMarker = { };
|
|
|
|
|
|
|
|
// Defines accessors for a property that is calculated the first time
|
|
|
|
// the property is read.
|
|
|
|
function DefineOneShotAccessor(obj, name, fun) {
|
|
|
|
// Note that the accessors consistently operate on 'obj', not 'this'.
|
|
|
|
// Since the object may occur in someone else's prototype chain we
|
|
|
|
// can't rely on 'this' being the same as 'obj'.
|
|
|
|
var hasBeenSet = false;
|
|
|
|
var value;
|
|
|
|
obj.__defineGetter__(name, function () {
|
|
|
|
if (hasBeenSet) {
|
|
|
|
return value;
|
|
|
|
}
|
|
|
|
hasBeenSet = true;
|
|
|
|
value = fun(obj);
|
|
|
|
return value;
|
|
|
|
});
|
|
|
|
obj.__defineSetter__(name, function (v) {
|
|
|
|
hasBeenSet = true;
|
|
|
|
value = v;
|
|
|
|
});
|
|
|
|
}
|
|
|
|
|
|
|
|
function CallSite(receiver, fun, pos) {
|
|
|
|
this.receiver = receiver;
|
|
|
|
this.fun = fun;
|
|
|
|
this.pos = pos;
|
|
|
|
}
|
|
|
|
|
|
|
|
CallSite.prototype.getThis = function () {
|
|
|
|
return this.receiver;
|
|
|
|
};
|
|
|
|
|
|
|
|
CallSite.prototype.getTypeName = function () {
|
|
|
|
var constructor = this.receiver.constructor;
|
|
|
|
if (!constructor)
|
|
|
|
return $Object.prototype.toString.call(this.receiver);
|
|
|
|
var constructorName = constructor.name;
|
|
|
|
if (!constructorName)
|
|
|
|
return $Object.prototype.toString.call(this.receiver);
|
|
|
|
return constructorName;
|
|
|
|
};
|
|
|
|
|
|
|
|
CallSite.prototype.isToplevel = function () {
|
|
|
|
if (this.receiver == null)
|
|
|
|
return true;
|
|
|
|
return IS_GLOBAL(this.receiver);
|
|
|
|
};
|
|
|
|
|
|
|
|
CallSite.prototype.isEval = function () {
|
|
|
|
var script = %FunctionGetScript(this.fun);
|
|
|
|
return script && script.compilation_type == 1;
|
|
|
|
};
|
|
|
|
|
|
|
|
CallSite.prototype.getEvalOrigin = function () {
|
|
|
|
var script = %FunctionGetScript(this.fun);
|
|
|
|
if (!script || script.compilation_type != 1)
|
|
|
|
return null;
|
|
|
|
return new CallSite(null, script.eval_from_function,
|
|
|
|
script.eval_from_position);
|
|
|
|
};
|
|
|
|
|
|
|
|
CallSite.prototype.getFunction = function () {
|
|
|
|
return this.fun;
|
|
|
|
};
|
|
|
|
|
|
|
|
CallSite.prototype.getFunctionName = function () {
|
|
|
|
// See if the function knows its own name
|
|
|
|
var name = this.fun.name;
|
|
|
|
if (name) {
|
|
|
|
return name;
|
|
|
|
} else {
|
|
|
|
return %FunctionGetInferredName(this.fun);
|
|
|
|
}
|
|
|
|
// Maybe this is an evaluation?
|
|
|
|
var script = %FunctionGetScript(this.fun);
|
|
|
|
if (script && script.compilation_type == 1)
|
|
|
|
return "eval";
|
|
|
|
return null;
|
|
|
|
};
|
|
|
|
|
|
|
|
CallSite.prototype.getMethodName = function () {
|
|
|
|
// See if we can find a unique property on the receiver that holds
|
|
|
|
// this function.
|
|
|
|
var ownName = this.fun.name;
|
|
|
|
if (ownName && this.receiver && this.receiver[ownName] === this.fun)
|
|
|
|
// To handle DontEnum properties we guess that the method has
|
|
|
|
// the same name as the function.
|
|
|
|
return ownName;
|
|
|
|
var name = null;
|
|
|
|
for (var prop in this.receiver) {
|
|
|
|
if (this.receiver[prop] === this.fun) {
|
|
|
|
// If we find more than one match bail out to avoid confusion
|
|
|
|
if (name)
|
|
|
|
return null;
|
|
|
|
name = prop;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (name)
|
|
|
|
return name;
|
|
|
|
return null;
|
|
|
|
};
|
|
|
|
|
|
|
|
CallSite.prototype.getFileName = function () {
|
|
|
|
var script = %FunctionGetScript(this.fun);
|
|
|
|
return script ? script.name : null;
|
|
|
|
};
|
|
|
|
|
|
|
|
CallSite.prototype.getLineNumber = function () {
|
|
|
|
if (this.pos == -1)
|
|
|
|
return null;
|
|
|
|
var script = %FunctionGetScript(this.fun);
|
|
|
|
var location = null;
|
|
|
|
if (script) {
|
|
|
|
location = script.locationFromPosition(this.pos, true);
|
|
|
|
}
|
|
|
|
return location ? location.line + 1 : null;
|
|
|
|
};
|
|
|
|
|
|
|
|
CallSite.prototype.getColumnNumber = function () {
|
|
|
|
if (this.pos == -1)
|
|
|
|
return null;
|
|
|
|
var script = %FunctionGetScript(this.fun);
|
|
|
|
var location = null;
|
|
|
|
if (script) {
|
|
|
|
location = script.locationFromPosition(this.pos, true);
|
|
|
|
}
|
|
|
|
return location ? location.column : null;
|
|
|
|
};
|
|
|
|
|
|
|
|
CallSite.prototype.isNative = function () {
|
|
|
|
var script = %FunctionGetScript(this.fun);
|
|
|
|
return script ? (script.type == 0) : false;
|
|
|
|
};
|
|
|
|
|
|
|
|
CallSite.prototype.getPosition = function () {
|
|
|
|
return this.pos;
|
|
|
|
};
|
|
|
|
|
|
|
|
CallSite.prototype.isConstructor = function () {
|
|
|
|
var constructor = this.receiver ? this.receiver.constructor : null;
|
|
|
|
if (!constructor)
|
|
|
|
return false;
|
|
|
|
return this.fun === constructor;
|
|
|
|
};
|
|
|
|
|
|
|
|
function FormatSourcePosition(frame) {
|
|
|
|
var fileLocation = "";
|
|
|
|
if (frame.isNative()) {
|
|
|
|
fileLocation = "native";
|
|
|
|
} else if (frame.isEval()) {
|
|
|
|
fileLocation = "eval at " + FormatSourcePosition(frame.getEvalOrigin());
|
|
|
|
} else {
|
|
|
|
var fileName = frame.getFileName();
|
|
|
|
if (fileName) {
|
|
|
|
fileLocation += fileName;
|
|
|
|
var lineNumber = frame.getLineNumber();
|
|
|
|
if (lineNumber != null) {
|
|
|
|
fileLocation += ":" + lineNumber;
|
|
|
|
var columnNumber = frame.getColumnNumber();
|
|
|
|
if (columnNumber) {
|
|
|
|
fileLocation += ":" + columnNumber;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (!fileLocation) {
|
|
|
|
fileLocation = "unknown source";
|
|
|
|
}
|
|
|
|
var line = "";
|
|
|
|
var functionName = frame.getFunction().name;
|
|
|
|
var methodName = frame.getMethodName();
|
|
|
|
var addPrefix = true;
|
|
|
|
var isConstructor = frame.isConstructor();
|
|
|
|
var isMethodCall = !(frame.isToplevel() || isConstructor);
|
|
|
|
if (isMethodCall) {
|
|
|
|
line += frame.getTypeName() + ".";
|
|
|
|
if (functionName) {
|
|
|
|
line += functionName;
|
|
|
|
if (methodName && (methodName != functionName)) {
|
|
|
|
line += " [as " + methodName + "]";
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
line += methodName || "<anonymous>";
|
|
|
|
}
|
|
|
|
} else if (isConstructor) {
|
|
|
|
line += "new " + (functionName || "<anonymous>");
|
|
|
|
} else if (functionName) {
|
|
|
|
line += functionName;
|
|
|
|
} else {
|
|
|
|
line += fileLocation;
|
|
|
|
addPrefix = false;
|
|
|
|
}
|
|
|
|
if (addPrefix) {
|
|
|
|
line += " (" + fileLocation + ")";
|
|
|
|
}
|
|
|
|
return line;
|
|
|
|
}
|
|
|
|
|
|
|
|
function FormatStackTrace(error, frames) {
|
|
|
|
var lines = [];
|
|
|
|
try {
|
|
|
|
lines.push(error.toString());
|
|
|
|
} catch (e) {
|
|
|
|
try {
|
|
|
|
lines.push("<error: " + e + ">");
|
|
|
|
} catch (ee) {
|
|
|
|
lines.push("<error>");
|
|
|
|
}
|
|
|
|
}
|
|
|
|
for (var i = 0; i < frames.length; i++) {
|
|
|
|
var frame = frames[i];
|
|
|
|
try {
|
|
|
|
var line = FormatSourcePosition(frame);
|
|
|
|
} catch (e) {
|
|
|
|
try {
|
|
|
|
var line = "<error: " + e + ">";
|
|
|
|
} catch (ee) {
|
|
|
|
// Any code that reaches this point is seriously nasty!
|
|
|
|
var line = "<error>";
|
|
|
|
}
|
|
|
|
}
|
|
|
|
lines.push(" at " + line);
|
|
|
|
}
|
|
|
|
return lines.join("\n");
|
|
|
|
}
|
|
|
|
|
|
|
|
function FormatRawStackTrace(error, raw_stack) {
|
|
|
|
var frames = [ ];
|
|
|
|
for (var i = 0; i < raw_stack.length; i += 3) {
|
|
|
|
var recv = raw_stack[i];
|
|
|
|
var fun = raw_stack[i+1];
|
|
|
|
var pc = raw_stack[i+2];
|
|
|
|
var pos = %FunctionGetPositionForOffset(fun, pc);
|
|
|
|
frames.push(new CallSite(recv, fun, pos));
|
|
|
|
}
|
|
|
|
if (IS_FUNCTION($Error.prepareStackTrace)) {
|
|
|
|
return $Error.prepareStackTrace(error, frames);
|
|
|
|
} else {
|
|
|
|
return FormatStackTrace(error, frames);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
function DefineError(f) {
|
|
|
|
// Store the error function in both the global object
|
|
|
|
// and the runtime object. The function is fetched
|
|
|
|
// from the runtime object when throwing errors from
|
|
|
|
// within the runtime system to avoid strange side
|
|
|
|
// effects when overwriting the error functions from
|
|
|
|
// user code.
|
|
|
|
var name = f.name;
|
|
|
|
%SetProperty(global, name, f, DONT_ENUM);
|
|
|
|
this['$' + name] = f;
|
|
|
|
// Configure the error function.
|
|
|
|
if (name == 'Error') {
|
|
|
|
// The prototype of the Error object must itself be an error.
|
|
|
|
// However, it can't be an instance of the Error object because
|
|
|
|
// it hasn't been properly configured yet. Instead we create a
|
|
|
|
// special not-a-true-error-but-close-enough object.
|
|
|
|
function ErrorPrototype() {}
|
|
|
|
%FunctionSetPrototype(ErrorPrototype, $Object.prototype);
|
|
|
|
%FunctionSetInstanceClassName(ErrorPrototype, 'Error');
|
|
|
|
%FunctionSetPrototype(f, new ErrorPrototype());
|
|
|
|
} else {
|
|
|
|
%FunctionSetPrototype(f, new $Error());
|
|
|
|
}
|
|
|
|
%FunctionSetInstanceClassName(f, 'Error');
|
|
|
|
%SetProperty(f.prototype, 'constructor', f, DONT_ENUM);
|
|
|
|
f.prototype.name = name;
|
|
|
|
%SetCode(f, function(m) {
|
|
|
|
if (%_IsConstructCall()) {
|
|
|
|
if (m === kAddMessageAccessorsMarker) {
|
|
|
|
DefineOneShotAccessor(this, 'message', function (obj) {
|
|
|
|
return FormatMessage({type: obj.type, args: obj.arguments});
|
|
|
|
});
|
|
|
|
} else if (!IS_UNDEFINED(m)) {
|
|
|
|
this.message = ToString(m);
|
|
|
|
}
|
|
|
|
captureStackTrace(this, f);
|
|
|
|
} else {
|
|
|
|
return new f(m);
|
|
|
|
}
|
|
|
|
});
|
|
|
|
}
|
|
|
|
|
|
|
|
function captureStackTrace(obj, cons_opt) {
|
|
|
|
var stackTraceLimit = $Error.stackTraceLimit;
|
|
|
|
if (!stackTraceLimit) return;
|
|
|
|
if (stackTraceLimit < 0 || stackTraceLimit > 10000)
|
|
|
|
stackTraceLimit = 10000;
|
|
|
|
var raw_stack = %CollectStackTrace(cons_opt ? cons_opt : captureStackTrace,
|
|
|
|
stackTraceLimit);
|
|
|
|
DefineOneShotAccessor(obj, 'stack', function (obj) {
|
|
|
|
return FormatRawStackTrace(obj, raw_stack);
|
|
|
|
});
|
|
|
|
};
|
|
|
|
|
|
|
|
$Math.__proto__ = global.Object.prototype;
|
|
|
|
|
|
|
|
DefineError(function Error() { });
|
|
|
|
DefineError(function TypeError() { });
|
|
|
|
DefineError(function RangeError() { });
|
|
|
|
DefineError(function SyntaxError() { });
|
|
|
|
DefineError(function ReferenceError() { });
|
|
|
|
DefineError(function EvalError() { });
|
|
|
|
DefineError(function URIError() { });
|
|
|
|
|
|
|
|
$Error.captureStackTrace = captureStackTrace;
|
|
|
|
|
|
|
|
// Setup extra properties of the Error.prototype object.
|
|
|
|
$Error.prototype.message = '';
|
|
|
|
|
|
|
|
%SetProperty($Error.prototype, 'toString', function toString() {
|
|
|
|
var type = this.type;
|
|
|
|
if (type && !this.hasOwnProperty("message")) {
|
|
|
|
return this.name + ": " + FormatMessage({ type: type, args: this.arguments });
|
|
|
|
}
|
|
|
|
var message = this.message;
|
|
|
|
return this.name + (message ? (": " + message) : "");
|
|
|
|
}, DONT_ENUM);
|
|
|
|
|
|
|
|
|
|
|
|
// Boilerplate for exceptions for stack overflows. Used from
|
|
|
|
// Top::StackOverflow().
|
|
|
|
const kStackOverflowBoilerplate = MakeRangeError('stack_overflow', []);
|