fd781bcc84
The parser reads one character beyond EOF to have an additional source position that the rewriter can use to insert the implicit return statement at the end of a script. If we break at that return statement, we need to be able to translate the source position to line and column number. R=jkummerow@chromium.org BUG=chromium:569514 LOG=N Committed: https://crrev.com/0b1076a68e1eadba260cec8afc5acec618561c28 Cr-Commit-Position: refs/heads/master@{#32825} Review URL: https://codereview.chromium.org/1521953003 Cr-Commit-Position: refs/heads/master@{#32835}
99 lines
4.2 KiB
JavaScript
99 lines
4.2 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', 99, 2, 0);
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testScriptMirror(Math.round, '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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// 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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