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Unified Diff: lib/dartdoc/frog/lib/function_implementation.dart

Issue 10696191: Frog removed from dartdoc. (Closed) Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart
Patch Set: Created 8 years, 5 months ago
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Index: lib/dartdoc/frog/lib/function_implementation.dart
diff --git a/lib/dartdoc/frog/lib/function_implementation.dart b/lib/dartdoc/frog/lib/function_implementation.dart
deleted file mode 100644
index c7e5c5ec5dcab2a4d383ad6d5bb518c510dac7f2..0000000000000000000000000000000000000000
--- a/lib/dartdoc/frog/lib/function_implementation.dart
+++ /dev/null
@@ -1,94 +0,0 @@
-// Copyright (c) 2011, 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.
-
-/// Exception thrown when a function receives the wrong number of arguments at
-/// runtime. Overridden to provide a more informative error message.
-// TODO(jmesserly): should the base class support a message?
-class _ArgumentMismatchException extends ClosureArgumentMismatchException {
- final String _message;
- const _ArgumentMismatchException(this._message);
- String toString() => "Closure argument mismatch: $_message";
-}
-
-/// Implementation details for [Function]
-/// Note: we don't expose this because it has no useful API. It's just some
-/// helpers for our dynamic calling convention. Maybe in the future there will
-/// be more stuff here, though.
-class _FunctionImplementation implements Function native "Function" {
- /**
- * Generates a dynamic call stub for a function.
- * Our goal is to create a stub method like this on-the-fly:
- * function($0, $1, capture) { return this($0, $1, true, capture); }
- *
- * This stub then replaces the dynamic one on Function, with one that is
- * specialized for that particular function, taking into account its default
- * arguments.
- */
- _genStub(argsLength, [names]) native @'''
- // Fast path #1: if no named arguments and arg count matches.
- var thisLength = this.$length || this.length;
- if (thisLength == argsLength && !names) {
- return this;
- }
-
- var paramsNamed = this.$optional ? (this.$optional.length / 2) : 0;
- var paramsBare = thisLength - paramsNamed;
- var argsNamed = names ? names.length : 0;
- var argsBare = argsLength - argsNamed;
-
- // Check we got the right number of arguments
- if (argsBare < paramsBare || argsLength > thisLength ||
- argsNamed > paramsNamed) {
- return function() {
- $throw(new _ArgumentMismatchException(
- 'Wrong number of arguments to function. Expected ' + paramsBare +
- ' positional arguments and at most ' + paramsNamed +
- ' named arguments, but got ' + argsBare +
- ' positional arguments and ' + argsNamed + ' named arguments.'));
- };
- }
-
- // First, fill in all of the default values
- var p = new Array(paramsBare);
- if (paramsNamed) {
- p = p.concat(this.$optional.slice(paramsNamed));
- }
- // Fill in positional args
- var a = new Array(argsLength);
- for (var i = 0; i < argsBare; i++) {
- p[i] = a[i] = '$' + i;
- }
- // Then overwrite with supplied values for optional args
- var lastParameterIndex;
- var namesInOrder = true;
- for (var i = 0; i < argsNamed; i++) {
- var name = names[i];
- a[i + argsBare] = name;
- var j = this.$optional.indexOf(name);
- if (j < 0 || j >= paramsNamed) {
- return function() {
- $throw(new _ArgumentMismatchException(
- 'Named argument "' + name + '" was not expected by function.' +
- ' Did you forget to mark the function parameter [optional]?'));
- };
- } else if (lastParameterIndex && lastParameterIndex > j) {
- namesInOrder = false;
- }
- p[j + paramsBare] = name;
- lastParameterIndex = j;
- }
-
- if (thisLength == argsLength && namesInOrder) {
- // Fast path #2: named arguments, but they're in order and all supplied.
- return this;
- }
-
- // Note: using Function instead of 'eval' to get a clean scope.
- // TODO(jmesserly): evaluate the performance of these stubs.
- var f = 'function(' + a.join(',') + '){return $f(' + p.join(',') + ');}';
- return new Function('$f', 'return ' + f + '').call(null, this);
- ''' {
- throw new _ArgumentMismatchException('');
- }
-}

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