f0d3cf5bae
This exposes scopes for suspended generator objects by adding a [[Scopes]] internal property to generator objects, similar to how scopes for functions currently not on the stack are handled. BUG=chromium:667286 Review-Url: https://codereview.chromium.org/2516973003 Cr-Commit-Position: refs/heads/master@{#41244}
79 lines
2.2 KiB
JavaScript
79 lines
2.2 KiB
JavaScript
// Copyright 2016 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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InspectorTest.addScript(
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`function *gen(a) {
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var b = 42;
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yield a;
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return b;
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}
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function testSuspendedGenerator()
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{
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var g = gen(420);
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g.next();
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debugger;
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}`);
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Protocol.Debugger.enable().then(testSuite);
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function dumpInnermostScope(msg) {
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var scopes = msg.result.result;
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var inner_scope = scopes[0].value;
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return Protocol.Runtime.getProperties({ objectId : inner_scope.objectId })
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.then(InspectorTest.logMessage);
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}
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function dumpGeneratorScopes(msg)
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{
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var props = msg.result.internalProperties;
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var promises = props
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.filter(prop => prop.name == "[[Scopes]]")
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.map(prop => prop.value.objectId)
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.map(scopesId => Protocol.Runtime.getProperties({ objectId : scopesId })
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.then(dumpInnermostScope));
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return Promise.all(promises);
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}
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function fetchGeneratorProperties(objectId) {
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return Protocol.Runtime.getProperties({ objectId : objectId });
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}
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function extractGeneratorObjectFromScope(scopeId) {
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return Protocol.Runtime.getProperties({ objectId : scopeId })
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.then(msg => {
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var generatorObjectId = msg.result.result[0].value.objectId;
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return fetchGeneratorProperties(generatorObjectId);
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});
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}
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function dumpGeneratorScopesOnPause(msg) {
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var scopeChain = msg.params.callFrames[0].scopeChain;
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var promises = scopeChain
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.filter(scope => scope.type === "local")
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.map(scope => scope.object.objectId)
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.map(scopeId => extractGeneratorObjectFromScope(scopeId)
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.then(dumpGeneratorScopes));
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return Promise.all(promises).then(Protocol.Debugger.resume);
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}
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function testSuite() {
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InspectorTest.runTestSuite([
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function testScopesPaused(next) {
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Protocol.Debugger.oncePaused()
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.then(dumpGeneratorScopesOnPause)
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.then(next);
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Protocol.Runtime.evaluate({ expression : "testSuspendedGenerator()" });
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},
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function testScopesNonPaused(next) {
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Protocol.Runtime.evaluate({ expression : "gen(430)"})
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.then(msg => fetchGeneratorProperties(msg.result.result.objectId))
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.then(dumpGeneratorScopes)
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.then(next);
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},
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]);
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}
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