781 lines
18 KiB
Java
781 lines
18 KiB
Java
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/*
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* Copyright 2008 The Closure Compiler Authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.google.javascript.jscomp;
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/**
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* Tests for {@link CrossModuleCodeMotion}.
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*
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*/
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public class CrossModuleCodeMotionTest extends CompilerTestCase {
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private static final String EXTERNS = "alert";
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public CrossModuleCodeMotionTest() {
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super(EXTERNS);
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}
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@Override
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public void setUp() {
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super.enableLineNumberCheck(true);
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}
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@Override
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public CompilerPass getProcessor(Compiler compiler) {
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return new CrossModuleCodeMotion(compiler, compiler.getModuleGraph());
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}
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public void testFunctionMovement1() {
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// This tests lots of things:
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// 1) f1 is declared in m1, and used in m2. Move it to m2
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// 2) f2 is declared in m1, and used in m3 twice. Move it to m3
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// 3) f3 is declared in m1, and used in m2+m3. It stays put
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// 4) g declared in m1 and never used. It stays put
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// 5) h declared in m2 and never used. It stays put
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// 6) f4 declared in m1 and used in m2 as var. It moves to m2
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JSModule[] modules = createModuleStar(
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// m1
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"function f1(a) { alert(a); }" +
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"function f2(a) { alert(a); }" +
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"function f3(a) { alert(a); }" +
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"function f4() { alert(1); }" +
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"function g() { alert('ciao'); }",
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// m2
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"f1('hi'); f3('bye'); var a = f4;" +
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"function h(a) { alert('h:' + a); }",
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// m3
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"f2('hi'); f2('hi'); f3('bye');");
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test(modules, new String[] {
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// m1
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"function f3(a) { alert(a); }" +
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"function g() { alert('ciao'); }",
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// m2
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"function f4() { alert(1); }" +
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"function f1(a) { alert(a); }" +
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"f1('hi'); f3('bye'); var a = f4;" +
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"function h(a) { alert('h:' + a); }",
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// m3
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"function f2(a) { alert(a); }" +
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"f2('hi'); f2('hi'); f3('bye');",
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});
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}
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public void testFunctionMovement2() {
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// having f declared as a local variable should block the migration to m2
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JSModule[] modules = createModuleStar(
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// m1
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"function f(a) { alert(a); }" +
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"function g() {var f = 1; f++}",
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// m2
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"f(1);");
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test(modules, new String[] {
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// m1
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"function g() {var f = 1; f++}",
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// m2
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"function f(a) { alert(a); }" +
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"f(1);",
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});
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}
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public void testFunctionMovement3() {
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// having f declared as a arg should block the migration to m2
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JSModule[] modules = createModuleStar(
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// m1
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"function f(a) { alert(a); }" +
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"function g(f) {f++}",
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// m2
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"f(1);");
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test(modules, new String[] {
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// m1
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"function g(f) {f++}",
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// m2
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"function f(a) { alert(a); }" +
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"f(1);",
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});
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}
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public void testFunctionMovement4() {
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// Try out moving a function which returns a closure
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JSModule[] modules = createModuleStar(
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// m1
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"function f(){return function(a){}}",
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// m2
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"var a = f();"
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);
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test(modules, new String[] {
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// m1
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"",
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// m2
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"function f(){return function(a){}}" +
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"var a = f();",
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});
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}
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public void testFunctionMovement5() {
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// Try moving a recursive function [using factorials for kicks]
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JSModule[] modules = createModuleStar(
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// m1
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"function f(n){return (n<1)?1:f(n-1)}",
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// m2
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"var a = f(4);"
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);
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test(modules, new String[] {
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// m1
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"",
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// m2
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"function f(n){return (n<1)?1:f(n-1)}" +
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"var a = f(4);",
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});
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}
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public void testFunctionMovement5b() {
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// Try moving a recursive function declared differently.
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JSModule[] modules = createModuleStar(
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// m1
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"var f = function(n){return (n<1)?1:f(n-1)};",
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// m2
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"var a = f(4);"
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);
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test(modules, new String[] {
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// m1
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"",
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// m2
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"var f = function(n){return (n<1)?1:f(n-1)};" +
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"var a = f(4);",
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});
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}
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public void testFunctionMovement6() {
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// Try out moving to the common ancestor
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JSModule[] modules = createModuleChain(
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// m1
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"function f(){return 1}",
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// m2
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"var a = f();",
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// m3
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"var b = f();"
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);
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test(modules, new String[] {
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// m1
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"",
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// m2
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"function f(){return 1}" +
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"var a = f();",
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// m3
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"var b = f();",
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});
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}
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public void testFunctionMovement7() {
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// Try out moving to the common ancestor with deeper ancestry chain
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JSModule[] modules = createModules(
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// m1
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"function f(){return 1}",
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// m2
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"",
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// m3
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"var a = f();",
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// m4
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"var b = f();",
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// m5
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"var c = f();"
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);
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modules[1].addDependency(modules[0]);
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modules[2].addDependency(modules[1]);
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modules[3].addDependency(modules[1]);
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modules[4].addDependency(modules[1]);
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test(modules, new String[] {
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// m1
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"",
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// m2
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"function f(){return 1}",
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// m3
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"var a = f();",
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// m4
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"var b = f();",
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// m5
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"var c = f();",
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});
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}
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public void testFunctionMovement8() {
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// Check what happens with named functions
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JSModule[] modules = createModuleChain(
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// m1
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"var v = function f(){return 1}",
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// m2
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"v();"
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);
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test(modules, new String[] {
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// m1
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"",
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// m2
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"var v = function f(){return 1};" +
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"v();",
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});
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}
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public void testFunctionNonMovement1() {
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// This tests lots of things:
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// 1) we can't move it if it is a class with non-const attributes accessed
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// 2) if it's in an if statement, we can't move it
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// 3) if it's in an while statement, we can't move it [with some extra
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// block elements]
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testSame(createModuleStar(
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// m1
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"function f(){};f.prototype.bar=new f;" +
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"if(a)function f2(){}" +
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"{{while(a)function f3(){}}}",
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// m2
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"var a = new f();f2();f3();"));
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}
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public void testFunctionNonMovement2() {
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// A generic case where 2 modules depend on the first one. But it's the
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// common ancestor, so we can't move.
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testSame(createModuleStar(
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// m1
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"function f(){return 1}",
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// m2
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"var a = f();",
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// m3
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"var b = f();"));
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}
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public void testClassMovement1() {
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test(createModuleStar(
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// m1
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"function f(){} f.prototype.bar=function (){};",
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// m2
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"var a = new f();"),
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new String[] {
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"",
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"function f(){} f.prototype.bar=function (){};" +
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"var a = new f();"
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});
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}
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public void testClassMovement2() {
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// NOTE: this is the result of two iterations
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test(createModuleChain(
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// m1
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"function f(){} f.prototype.bar=3; f.prototype.baz=5;",
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// m2
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"f.prototype.baq = 7;",
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// m3
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"f.prototype.baz = 9;",
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// m4
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"var a = new f();"),
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new String[] {
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// m1
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"",
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// m2
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"",
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// m3
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"function f(){} f.prototype.bar=3; f.prototype.baz=5;" +
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"f.prototype.baq = 7;" +
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"f.prototype.baz = 9;",
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// m4
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"var a = new f();"
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});
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}
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public void testClassMovement3() {
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// NOTE: this is the result of two iterations
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test(createModuleChain(
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// m1
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"var f = function() {}; f.prototype.bar=3; f.prototype.baz=5;",
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// m2
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"f = 7;",
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// m3
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"f = 9;",
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// m4
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"f = 11;"),
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new String[] {
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// m1
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"",
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// m2
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"",
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// m3
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"var f = function() {}; f.prototype.bar=3; f.prototype.baz=5;" +
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"f = 7;" +
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"f = 9;",
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// m4
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"f = 11;"
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});
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}
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public void testClassMovement4() {
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testSame(createModuleStar(
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// m1
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"function f(){} f.prototype.bar=3; f.prototype.baz=5;",
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// m2
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"f.prototype.baq = 7;",
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// m3
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"var a = new f();"));
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}
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public void testClassMovement5() {
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JSModule[] modules = createModules(
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// m1
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"function f(){} f.prototype.bar=3; f.prototype.baz=5;",
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// m2
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"",
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// m3
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"f.prototype.baq = 7;",
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// m4
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"var a = new f();");
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modules[1].addDependency(modules[0]);
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modules[2].addDependency(modules[1]);
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modules[3].addDependency(modules[1]);
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test(modules,
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new String[] {
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// m1
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"",
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// m2
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"function f(){} f.prototype.bar=3; f.prototype.baz=5;",
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// m3
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"f.prototype.baq = 7;",
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// m4 +
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"var a = new f();"
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});
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}
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public void testClassMovement6() {
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test(createModuleChain(
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// m1
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"function Foo(){} function Bar(){} goog.inherits(Bar, Foo);" +
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"new Foo();",
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// m2
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"new Bar();"),
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new String[] {
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// m1
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"function Foo(){} new Foo();",
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// m2
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"function Bar(){} goog.inherits(Bar, Foo); new Bar();"
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});
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}
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public void testClassMovement7() {
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testSame(createModuleChain(
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// m1
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"function Foo(){} function Bar(){} goog.inherits(Bar, Foo);" +
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"new Bar();",
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// m2
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"new Foo();"));
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}
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public void testStubMethodMovement1() {
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test(createModuleChain(
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// m1
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"function Foo(){} " +
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"Foo.prototype.bar = JSCompiler_stubMethod(x);",
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// m2
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"new Foo();"),
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new String[] {
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// m1
|
||
|
|
"",
|
||
|
|
"function Foo(){} " +
|
||
|
|
"Foo.prototype.bar = JSCompiler_stubMethod(x);" +
|
||
|
|
"new Foo();"
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
public void testStubMethodMovement2() {
|
||
|
|
test(createModuleChain(
|
||
|
|
// m1
|
||
|
|
"function Foo(){} " +
|
||
|
|
"Foo.prototype.bar = JSCompiler_unstubMethod(x);",
|
||
|
|
// m2
|
||
|
|
"new Foo();"),
|
||
|
|
new String[] {
|
||
|
|
// m1
|
||
|
|
"",
|
||
|
|
"function Foo(){} " +
|
||
|
|
"Foo.prototype.bar = JSCompiler_unstubMethod(x);" +
|
||
|
|
"new Foo();"
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
public void testNoMoveSideEffectProperty() {
|
||
|
|
testSame(createModuleChain(
|
||
|
|
// m1
|
||
|
|
"function Foo(){} " +
|
||
|
|
"Foo.prototype.bar = createSomething();",
|
||
|
|
// m2
|
||
|
|
"new Foo();"));
|
||
|
|
}
|
||
|
|
|
||
|
|
public void testAssignMovement() {
|
||
|
|
test(createModuleChain(
|
||
|
|
// m1
|
||
|
|
"var f = 3;" +
|
||
|
|
"f = 5;",
|
||
|
|
// m2
|
||
|
|
"var h = f;"),
|
||
|
|
new String[] {
|
||
|
|
// m1
|
||
|
|
"",
|
||
|
|
// m2
|
||
|
|
"var f = 3;" +
|
||
|
|
"f = 5;" +
|
||
|
|
"var h = f;"
|
||
|
|
});
|
||
|
|
|
||
|
|
// don't move nested assigns
|
||
|
|
testSame(createModuleChain(
|
||
|
|
// m1
|
||
|
|
"var f = 3;" +
|
||
|
|
"var g = f = 5;",
|
||
|
|
// m2
|
||
|
|
"var h = f;"));
|
||
|
|
}
|
||
|
|
|
||
|
|
public void testNoClassMovement2() {
|
||
|
|
test(createModuleChain(
|
||
|
|
// m1
|
||
|
|
"var f = {};" +
|
||
|
|
"f.h = 5;",
|
||
|
|
// m2
|
||
|
|
"var h = f;"),
|
||
|
|
new String[] {
|
||
|
|
// m1
|
||
|
|
"",
|
||
|
|
// m2
|
||
|
|
"var f = {};" +
|
||
|
|
"f.h = 5;" +
|
||
|
|
"var h = f;"
|
||
|
|
});
|
||
|
|
|
||
|
|
// don't move nested getprop assigns
|
||
|
|
testSame(createModuleChain(
|
||
|
|
// m1
|
||
|
|
"var f = {};" +
|
||
|
|
"var g = f.h = 5;",
|
||
|
|
// m2
|
||
|
|
"var h = f;"));
|
||
|
|
}
|
||
|
|
|
||
|
|
public void testLiteralMovement1() {
|
||
|
|
test(createModuleChain(
|
||
|
|
// m1
|
||
|
|
"var f = {'hi': 'mom', 'bye': function() {}};",
|
||
|
|
// m2
|
||
|
|
"var h = f;"),
|
||
|
|
new String[] {
|
||
|
|
// m1
|
||
|
|
"",
|
||
|
|
// m2
|
||
|
|
"var f = {'hi': 'mom', 'bye': function() {}};" +
|
||
|
|
"var h = f;"
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
public void testLiteralMovement2() {
|
||
|
|
testSame(createModuleChain(
|
||
|
|
// m1
|
||
|
|
"var f = {'hi': 'mom', 'bye': goog.nullFunction};",
|
||
|
|
// m2
|
||
|
|
"var h = f;"));
|
||
|
|
}
|
||
|
|
|
||
|
|
public void testLiteralMovement3() {
|
||
|
|
test(createModuleChain(
|
||
|
|
// m1
|
||
|
|
"var f = ['hi', function() {}];",
|
||
|
|
// m2
|
||
|
|
"var h = f;"),
|
||
|
|
new String[] {
|
||
|
|
// m1
|
||
|
|
"",
|
||
|
|
// m2
|
||
|
|
"var f = ['hi', function() {}];" +
|
||
|
|
"var h = f;"
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
public void testLiteralMovement4() {
|
||
|
|
testSame(createModuleChain(
|
||
|
|
// m1
|
||
|
|
"var f = ['hi', goog.nullFunction];",
|
||
|
|
// m2
|
||
|
|
"var h = f;"));
|
||
|
|
}
|
||
|
|
|
||
|
|
public void testVarMovement1() {
|
||
|
|
// test moving a variable
|
||
|
|
JSModule[] modules = createModuleStar(
|
||
|
|
// m1
|
||
|
|
"var a = 0;",
|
||
|
|
// m2
|
||
|
|
"var x = a;"
|
||
|
|
);
|
||
|
|
|
||
|
|
test(modules, new String[] {
|
||
|
|
// m1
|
||
|
|
"",
|
||
|
|
// m2
|
||
|
|
"var a = 0;" +
|
||
|
|
"var x = a;",
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
public void testVarMovement2() {
|
||
|
|
// Test moving 1 variable out of the block
|
||
|
|
JSModule[] modules = createModuleStar(
|
||
|
|
// m1
|
||
|
|
"var a = 0; var b = 1; var c = 2;",
|
||
|
|
// m2
|
||
|
|
"var x = b;"
|
||
|
|
);
|
||
|
|
|
||
|
|
test(modules, new String[] {
|
||
|
|
// m1
|
||
|
|
"var a = 0; var c = 2;",
|
||
|
|
// m2
|
||
|
|
"var b = 1;" +
|
||
|
|
"var x = b;"
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
public void testVarMovement3() {
|
||
|
|
// Test moving all variables out of the block
|
||
|
|
JSModule[] modules = createModuleStar(
|
||
|
|
// m1
|
||
|
|
"var a = 0; var b = 1;",
|
||
|
|
// m2
|
||
|
|
"var x = a + b;"
|
||
|
|
);
|
||
|
|
|
||
|
|
test(modules, new String[] {
|
||
|
|
// m1
|
||
|
|
"",
|
||
|
|
// m2
|
||
|
|
"var b = 1;" +
|
||
|
|
"var a = 0;" +
|
||
|
|
"var x = a + b;"
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
public void testVarMovement4() {
|
||
|
|
// Test moving a function
|
||
|
|
JSModule[] modules = createModuleStar(
|
||
|
|
// m1
|
||
|
|
"var a = function(){alert(1)};",
|
||
|
|
// m2
|
||
|
|
"var x = a;"
|
||
|
|
);
|
||
|
|
|
||
|
|
test(modules, new String[] {
|
||
|
|
// m1
|
||
|
|
"",
|
||
|
|
// m2
|
||
|
|
"var a = function(){alert(1)};" +
|
||
|
|
"var x = a;"
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
public void testVarMovement5() {
|
||
|
|
// Don't move a function outside of scope
|
||
|
|
testSame(createModuleStar(
|
||
|
|
// m1
|
||
|
|
"var a = alert;",
|
||
|
|
// m2
|
||
|
|
"var x = a;"));
|
||
|
|
}
|
||
|
|
|
||
|
|
public void testVarMovement6() {
|
||
|
|
// Test moving a var with no assigned value
|
||
|
|
JSModule[] modules = createModuleStar(
|
||
|
|
// m1
|
||
|
|
"var a;",
|
||
|
|
// m2
|
||
|
|
"var x = a;"
|
||
|
|
);
|
||
|
|
|
||
|
|
test(modules, new String[] {
|
||
|
|
// m1
|
||
|
|
"",
|
||
|
|
// m2
|
||
|
|
"var a;" +
|
||
|
|
"var x = a;"
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
public void testVarMovement7() {
|
||
|
|
// Don't move a variable higher in the dependency tree
|
||
|
|
testSame(createModuleStar(
|
||
|
|
// m1
|
||
|
|
"function f() {g();}",
|
||
|
|
// m2
|
||
|
|
"function g(){};"));
|
||
|
|
}
|
||
|
|
|
||
|
|
public void testVarMovement8() {
|
||
|
|
JSModule[] modules = createModuleBush(
|
||
|
|
// m1
|
||
|
|
"var a = 0;",
|
||
|
|
// m2 -> m1
|
||
|
|
"",
|
||
|
|
// m3 -> m2
|
||
|
|
"var x = a;",
|
||
|
|
// m4 -> m2
|
||
|
|
"var y = a;"
|
||
|
|
);
|
||
|
|
|
||
|
|
test(modules, new String[] {
|
||
|
|
// m1
|
||
|
|
"",
|
||
|
|
// m2
|
||
|
|
"var a = 0;",
|
||
|
|
// m3
|
||
|
|
"var x = a;",
|
||
|
|
// m4
|
||
|
|
"var y = a;"
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
public void testVarMovement9() {
|
||
|
|
JSModule[] modules = createModuleTree(
|
||
|
|
// m1
|
||
|
|
"var a = 0; var b = 1; var c = 3;",
|
||
|
|
// m2 -> m1
|
||
|
|
"",
|
||
|
|
// m3 -> m1
|
||
|
|
"",
|
||
|
|
// m4 -> m2
|
||
|
|
"a;",
|
||
|
|
// m5 -> m2
|
||
|
|
"a;c;",
|
||
|
|
// m6 -> m3
|
||
|
|
"b;",
|
||
|
|
// m7 -> m4
|
||
|
|
"b;c;"
|
||
|
|
);
|
||
|
|
|
||
|
|
test(modules, new String[] {
|
||
|
|
// m1
|
||
|
|
"var c = 3;",
|
||
|
|
// m2
|
||
|
|
"var a = 0;",
|
||
|
|
// m3
|
||
|
|
"var b = 1;",
|
||
|
|
// m4
|
||
|
|
"a;",
|
||
|
|
// m5
|
||
|
|
"a;c;",
|
||
|
|
// m6
|
||
|
|
"b;",
|
||
|
|
// m7
|
||
|
|
"b;c;"
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
public void testClone1() {
|
||
|
|
test(createModuleChain(
|
||
|
|
// m1
|
||
|
|
"function f(){} f.prototype.clone = function() { return new f };",
|
||
|
|
// m2
|
||
|
|
"var a = (new f).clone();"),
|
||
|
|
new String[] {
|
||
|
|
// m1
|
||
|
|
"",
|
||
|
|
"function f(){} f.prototype.clone = function() { return new f() };" +
|
||
|
|
// m2
|
||
|
|
"var a = (new f).clone();"
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
public void testClone2() {
|
||
|
|
test(createModuleChain(
|
||
|
|
// m1
|
||
|
|
"function f(){}" +
|
||
|
|
"f.prototype.cloneFun = function() {" +
|
||
|
|
" return function() {new f}" +
|
||
|
|
"};",
|
||
|
|
// m2
|
||
|
|
"var a = (new f).cloneFun();"),
|
||
|
|
new String[] {
|
||
|
|
// m1
|
||
|
|
"",
|
||
|
|
"function f(){}" +
|
||
|
|
"f.prototype.cloneFun = function() {" +
|
||
|
|
" return function() {new f}" +
|
||
|
|
"};" +
|
||
|
|
// m2
|
||
|
|
"var a = (new f).cloneFun();"
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
public void testBug4118005() {
|
||
|
|
testSame(createModuleChain(
|
||
|
|
// m1
|
||
|
|
"var m = 1;\n" +
|
||
|
|
"(function () {\n" +
|
||
|
|
" var x = 1;\n" +
|
||
|
|
" m = function() { return x };\n" +
|
||
|
|
"})();\n",
|
||
|
|
// m2
|
||
|
|
"m();"));
|
||
|
|
}
|
||
|
|
|
||
|
|
public void testEmptyModule() {
|
||
|
|
// When the dest module is empty, it might try to move the code to the
|
||
|
|
// one of the modules that the empty module depends on. In some cases
|
||
|
|
// this might ended up to be the same module as the definition of the code.
|
||
|
|
// When that happens, CrossModuleCodeMotion might report a code change
|
||
|
|
// while nothing is moved. This should not be a problem if we know all
|
||
|
|
// modules are non-empty.
|
||
|
|
JSModule m1 = new JSModule("m1");
|
||
|
|
m1.add(SourceFile.fromCode("m1", "function x() {}"));
|
||
|
|
|
||
|
|
JSModule empty = new JSModule("empty");
|
||
|
|
empty.addDependency(m1);
|
||
|
|
|
||
|
|
JSModule m2 = new JSModule("m2");
|
||
|
|
m2.add(SourceFile.fromCode("m2", "x()"));
|
||
|
|
m2.addDependency(empty);
|
||
|
|
|
||
|
|
JSModule m3 = new JSModule("m3");
|
||
|
|
m3.add(SourceFile.fromCode("m3", "x()"));
|
||
|
|
m3.addDependency(empty);
|
||
|
|
|
||
|
|
test(new JSModule[] {m1,empty,m2,m3},
|
||
|
|
new String[] {
|
||
|
|
"",
|
||
|
|
"function x() {}",
|
||
|
|
"x()",
|
||
|
|
"x()"
|
||
|
|
});
|
||
|
|
}
|
||
|
|
}
|