d498361c5f
Scripts now have a compilation type which can be host, eval or JSON. Host scripts are compiled through the API, eval scripts are compiled through call to evan and JSON scripts are compiled as a result of calling JSON.parse. For scripts scripts compiled through eval the JavaScript function in top of the stack and the pc offset into the code is stored in the script object. This makes it possible to calculate the source position of the eval call later when requested. This information can be obtained through the script mirror object and is part of the script mirror JSON serialization for the debugger protocol. Moved the enumeration ScripType into class Script and remamed to Type. The new compilation type enumeration is also inside the class Script. This information is now shown when using the scripts command in he developer shell debugger. Review URL: http://codereview.chromium.org/119108 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2119 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
101 lines
4.4 KiB
JavaScript
101 lines
4.4 KiB
JavaScript
// Copyright 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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// Flags: --expose-debug-as debug --allow-natives-syntax
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// Test the mirror object for scripts.
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function testScriptMirror(f, file_name, file_lines, type, compilation_type,
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source, eval_from_line) {
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// Create mirror and JSON representation.
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var mirror = debug.MakeMirror(f).script();
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var serializer = debug.MakeMirrorSerializer();
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var json = JSON.stringify(serializer.serializeValue(mirror));
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// Check the mirror hierachy.
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assertTrue(mirror instanceof debug.Mirror);
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assertFalse(mirror instanceof debug.ValueMirror);
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assertTrue(mirror instanceof debug.ScriptMirror);
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// Check the mirror properties.
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assertTrue(mirror.isScript());
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assertEquals('script', mirror.type());
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var name = mirror.name();
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if (name) {
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assertEquals(file_name, name.substring(name.length - file_name.length));
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} else {
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assertTrue(file_name === null);
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}
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assertEquals(0, mirror.lineOffset());
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assertEquals(0, mirror.columnOffset());
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if (file_lines > 0) {
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assertEquals(file_lines, mirror.lineCount());
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}
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assertEquals(type, mirror.scriptType());
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assertEquals(compilation_type, mirror.compilationType(), "compilation type");
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if (source) {
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assertEquals(source, mirror.source());
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}
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if (eval_from_line) {
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assertEquals(eval_from_line, mirror.evalFromLocation().line);
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}
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// Parse JSON representation and check.
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var fromJSON = JSON.parse(json);
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assertEquals('script', fromJSON.type);
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name = fromJSON.name;
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if (name) {
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assertEquals(file_name, name.substring(name.length - file_name.length));
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} else {
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assertTrue(file_name === null);
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}
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assertEquals(0, fromJSON.lineOffset);
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assertEquals(0, fromJSON.columnOffset);
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if (file_lines > 0) {
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assertEquals(file_lines, fromJSON.lineCount);
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}
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assertEquals(type, fromJSON.scriptType);
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assertEquals(compilation_type, fromJSON.compilationType);
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}
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// Test the script mirror for different functions.
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testScriptMirror(function(){}, 'mirror-script.js', 100, 2, 0);
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testScriptMirror(Math.sin, 'native math.js', -1, 0, 0);
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testScriptMirror(eval('function(){}'), null, 1, 2, 1, 'function(){}', 87);
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testScriptMirror(eval('function(){\n }'), null, 2, 2, 1, 'function(){\n }', 88);
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testScriptMirror(%CompileString("({a:1,b:2})", true), null, 1, 2, 2, '({a:1,b:2})');
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testScriptMirror(%CompileString("({a:1,\n b:2})", true), null, 2, 2, 2, '({a:1,\n b:2})');
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// Test taking slices of source.
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var mirror = debug.MakeMirror(eval('function(){\n 1;\n}')).script();
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assertEquals('function(){\n', mirror.sourceSlice(0, 1).sourceText());
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assertEquals(' 1;\n', mirror.sourceSlice(1, 2).sourceText());
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assertEquals('}', mirror.sourceSlice(2, 3).sourceText());
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assertEquals('function(){\n 1;\n', mirror.sourceSlice(0, 2).sourceText());
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assertEquals(' 1;\n}', mirror.sourceSlice(1, 3).sourceText());
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assertEquals('function(){\n 1;\n}', mirror.sourceSlice(0, 3).sourceText());
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