/*
* Copyright 2009 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package com.google.gwt.dev.jjs.impl.gflow;
import com.google.gwt.core.ext.UnableToCompleteException;
import com.google.gwt.dev.jjs.ast.JMethodBody;
import com.google.gwt.dev.jjs.ast.JProgram;
import com.google.gwt.dev.jjs.impl.JJSTestBase;
import com.google.gwt.dev.jjs.impl.gflow.cfg.AssumptionsPrinter;
import com.google.gwt.dev.jjs.impl.gflow.cfg.Cfg;
import com.google.gwt.dev.jjs.impl.gflow.cfg.CfgBuilder;
import com.google.gwt.dev.jjs.impl.gflow.cfg.CfgEdge;
import com.google.gwt.dev.jjs.impl.gflow.cfg.CfgNode;
import com.google.gwt.thirdparty.guava.common.base.Joiner;
import java.util.Map;
/**
* A base class for tests of {@link DataflowAnalyzer} components.
*/
public abstract class CfgAnalysisTestBase<A extends Assumption<A>>
extends JJSTestBase {
protected boolean forward = true;
protected AnalysisResult analyze(String returnType, String... codeSnippet)
throws UnableToCompleteException {
return analyzeWithParams(returnType, "", codeSnippet);
}
protected AnalysisResult analyzeWithParams(String returnType, String params,
String... codeSnippet) throws UnableToCompleteException {
JProgram program = compileSnippet(returnType, params, Joiner.on("\n").join(codeSnippet), true);
JMethodBody body = (JMethodBody) findMainMethod(program).getBody();
Cfg cfgGraph = CfgBuilder.build(program, body.getBlock());
assertNotNull(cfgGraph);
Map<CfgEdge, A> map = AnalysisSolver.solve(cfgGraph, createAnalysis(), forward);
return new AnalysisResult(cfgGraph, map);
}
protected abstract Analysis<CfgNode<?>, CfgEdge, Cfg, A> createAnalysis();
/**
* The result of an analysis.
*/
protected class AnalysisResult {
private final Map<CfgEdge, A> assumptions;
private final Cfg graph;
public AnalysisResult(Cfg graph,
Map<CfgEdge, A> assumptions) {
this.graph = graph;
this.assumptions = assumptions;
}
public void into(String... expected) {
String actual = new AssumptionsPrinter<A>(graph, assumptions).print();
assertEquals(Joiner.on("\n").join(expected), actual);
}
}
}