/*
* Copyright 2003-2011 JetBrains s.r.o.
*
* 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 jetbrains.mps.dataFlow.lang;
import org.junit.Test;
import org.junit.Assert;
import jetbrains.mps.lang.dataFlow.framework.analyzers.LivenessAnalyzer;
import jetbrains.mps.lang.dataFlow.framework.SimpleProgramBuilder;
import jetbrains.mps.lang.dataFlow.framework.AnalysisResult;
import jetbrains.mps.lang.dataFlow.framework.Program;
import jetbrains.mps.lang.dataFlow.framework.VarSet;
public class LivenessAnalysisTest {
@Test
public void linearProgram() {
Program p =
new SimpleProgramBuilder()
.emitRead("x")
.emitWrite("y")
.emitRead("z")
.buildProgram();
AnalysisResult<VarSet> analysisResult = p.analyze(new LivenessAnalyzer());
Assert.assertEquals(
"0: read x [x, z]\n" +
"1: write y [z]\n" +
"2: read z [z]\n" +
"3: end []\n",
analysisResult.toString()
);
}
@Test
public void overwrite() {
Program p =
new SimpleProgramBuilder()
.emitRead("x")
.emitWrite("x")
.buildProgram();
AnalysisResult<VarSet> analysisResult = p.analyze(new LivenessAnalyzer());
Assert.assertEquals(
"0: read x [x]\n" +
"1: write x []\n" +
"2: end []\n",
analysisResult.toString()
);
}
@Test
public void cyclicProgram() {
Program p =
new SimpleProgramBuilder()
.emitRead("y")
.emitRead("x")
.emitIfJump(0)
.buildProgram();
AnalysisResult<VarSet> analysisResult = p.analyze(new LivenessAnalyzer());
Assert.assertEquals(
"0: read y [x, y]\n" +
"1: read x [x, y]\n" +
"2: ifjump 0 [x, y]\n" +
"3: end []\n",
analysisResult.toString()
);
}
}