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nodejs/deps/v8/test/mjsunit/mirror-function.js

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JavaScript

// Copyright 2008 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// Flags: --expose-debug-as debug
// Test the mirror object for functions.
function MirrorRefCache(json_refs) {
var tmp = eval('(' + json_refs + ')');
this.refs_ = [];
for (var i = 0; i < tmp.length; i++) {
this.refs_[tmp[i].handle] = tmp[i];
}
}
MirrorRefCache.prototype.lookup = function(handle) {
return this.refs_[handle];
}
function testFunctionMirror(f) {
// Create mirror and JSON representation.
var mirror = debug.MakeMirror(f);
var serializer = debug.MakeMirrorSerializer();
var json = serializer.serializeValue(mirror);
var refs = new MirrorRefCache(serializer.serializeReferencedObjects());
// Check the mirror hierachy.
assertTrue(mirror instanceof debug.Mirror);
assertTrue(mirror instanceof debug.ValueMirror);
assertTrue(mirror instanceof debug.ObjectMirror);
assertTrue(mirror instanceof debug.FunctionMirror);
// Check the mirror properties.
assertTrue(mirror.isFunction());
assertEquals('function', mirror.type());
assertFalse(mirror.isPrimitive());
assertEquals("Function", mirror.className());
assertEquals(f.name, mirror.name());
assertTrue(mirror.resolved());
assertEquals(f.toString(), mirror.source());
assertTrue(mirror.constructorFunction() instanceof debug.ObjectMirror);
assertTrue(mirror.protoObject() instanceof debug.Mirror);
assertTrue(mirror.prototypeObject() instanceof debug.Mirror);
// Test text representation
assertEquals(f.toString(), mirror.toText());
// Parse JSON representation and check.
var fromJSON = eval('(' + json + ')');
assertEquals('function', fromJSON.type);
assertEquals('Function', fromJSON.className);
assertEquals('function', refs.lookup(fromJSON.constructorFunction.ref).type);
assertEquals('Function', refs.lookup(fromJSON.constructorFunction.ref).name);
assertTrue(fromJSON.resolved);
assertEquals(f.name, fromJSON.name);
assertEquals(f.toString(), fromJSON.source);
// Check the formatted text (regress 1142074).
assertEquals(f.toString(), fromJSON.text);
}
// Test a number of different functions.
testFunctionMirror(function(){});
testFunctionMirror(function a(){return 1;});
testFunctionMirror(Math.sin);