/*
* Copyright 2014 Alexey Andreev.
*
* 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 org.teavm.cache;
import static org.hamcrest.CoreMatchers.instanceOf;
import static org.hamcrest.CoreMatchers.is;
import static org.junit.Assert.assertThat;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.junit.Test;
import org.teavm.model.BasicBlock;
import org.teavm.model.Program;
import org.teavm.model.ValueType;
import org.teavm.model.instructions.*;
/**
*
* @author Alexey Andreev
*/
public class ProgramIOTest {
@Test
public void emptyInstruction() {
Program program = new Program();
BasicBlock block = program.createBasicBlock();
block.getInstructions().add(new EmptyInstruction());
program = inputOutput(program);
block = program.basicBlockAt(0);
assertThat(block.getInstructions().size(), is(1));
assertThat(block.getInstructions().get(0), instanceOf(EmptyInstruction.class));
}
@Test
public void constants() {
Program program = new Program();
BasicBlock block = program.createBasicBlock();
ClassConstantInstruction classConstInsn = new ClassConstantInstruction();
classConstInsn.setConstant(ValueType.BYTE);
classConstInsn.setReceiver(program.createVariable());
block.getInstructions().add(classConstInsn);
NullConstantInstruction nullConstInsn = new NullConstantInstruction();
nullConstInsn.setReceiver(program.createVariable());
block.getInstructions().add(nullConstInsn);
IntegerConstantInstruction intConsInsn = new IntegerConstantInstruction();
intConsInsn.setReceiver(program.createVariable());
intConsInsn.setConstant(23);
block.getInstructions().add(intConsInsn);
LongConstantInstruction longConsInsn = new LongConstantInstruction();
longConsInsn.setReceiver(program.createVariable());
longConsInsn.setConstant(234);
block.getInstructions().add(longConsInsn);
FloatConstantInstruction floatConsInsn = new FloatConstantInstruction();
floatConsInsn.setReceiver(program.createVariable());
floatConsInsn.setConstant(3.14f);
block.getInstructions().add(floatConsInsn);
DoubleConstantInstruction doubleConsInsn = new DoubleConstantInstruction();
doubleConsInsn.setReceiver(program.createVariable());
doubleConsInsn.setConstant(3.14159);
block.getInstructions().add(doubleConsInsn);
StringConstantInstruction stringConsInsn = new StringConstantInstruction();
stringConsInsn.setReceiver(program.createVariable());
stringConsInsn.setConstant("foo");
block.getInstructions().add(stringConsInsn);
program = inputOutput(program);
block = program.basicBlockAt(0);
assertThat(block.getInstructions().size(), is(7));
assertThat(block.getInstructions().get(0), instanceOf(ClassConstantInstruction.class));
assertThat(block.getInstructions().get(1), instanceOf(NullConstantInstruction.class));
assertThat(block.getInstructions().get(2), instanceOf(IntegerConstantInstruction.class));
assertThat(block.getInstructions().get(3), instanceOf(LongConstantInstruction.class));
assertThat(block.getInstructions().get(4), instanceOf(FloatConstantInstruction.class));
assertThat(block.getInstructions().get(5), instanceOf(DoubleConstantInstruction.class));
assertThat(block.getInstructions().get(6), instanceOf(StringConstantInstruction.class));
classConstInsn = (ClassConstantInstruction)block.getInstructions().get(0);
assertThat(classConstInsn.getReceiver().getIndex(), is(0));
assertThat(classConstInsn.getConstant().toString(), is(ValueType.BYTE.toString()));
nullConstInsn = (NullConstantInstruction)block.getInstructions().get(1);
assertThat(nullConstInsn.getReceiver().getIndex(), is(1));
intConsInsn = (IntegerConstantInstruction)block.getInstructions().get(2);
assertThat(intConsInsn.getConstant(), is(23));
assertThat(intConsInsn.getReceiver().getIndex(), is(2));
longConsInsn = (LongConstantInstruction)block.getInstructions().get(3);
assertThat(longConsInsn.getConstant(), is(234L));
assertThat(longConsInsn.getReceiver().getIndex(), is(3));
floatConsInsn = (FloatConstantInstruction)block.getInstructions().get(4);
assertThat(floatConsInsn.getConstant(), is(3.14f));
assertThat(floatConsInsn.getReceiver().getIndex(), is(4));
doubleConsInsn = (DoubleConstantInstruction)block.getInstructions().get(5);
assertThat(doubleConsInsn.getConstant(), is(3.14159));
assertThat(doubleConsInsn.getReceiver().getIndex(), is(5));
stringConsInsn = (StringConstantInstruction)block.getInstructions().get(6);
assertThat(stringConsInsn.getConstant(), is("foo"));
assertThat(stringConsInsn.getReceiver().getIndex(), is(6));
}
@Test
public void binaryOperation() {
Program program = new Program();
BasicBlock block = program.createBasicBlock();
IntegerConstantInstruction constInsn = new IntegerConstantInstruction();
constInsn.setConstant(3);
constInsn.setReceiver(program.createVariable());
block.getInstructions().add(constInsn);
constInsn = new IntegerConstantInstruction();
constInsn.setConstant(2);
constInsn.setReceiver(program.createVariable());
block.getInstructions().add(constInsn);
BinaryInstruction addInsn = new BinaryInstruction(BinaryOperation.ADD, NumericOperandType.INT);
addInsn.setFirstOperand(program.variableAt(0));
addInsn.setSecondOperand(program.variableAt(1));
addInsn.setReceiver(program.createVariable());
block.getInstructions().add(addInsn);
BinaryInstruction subInsn = new BinaryInstruction(BinaryOperation.SUBTRACT, NumericOperandType.INT);
subInsn.setFirstOperand(program.variableAt(2));
subInsn.setSecondOperand(program.variableAt(0));
subInsn.setReceiver(program.createVariable());
block.getInstructions().add(subInsn);
assertThat(block.getInstructions().size(), is(4));
assertThat(block.getInstructions().get(2), instanceOf(BinaryInstruction.class));
assertThat(block.getInstructions().get(3), instanceOf(BinaryInstruction.class));
addInsn = (BinaryInstruction)block.getInstructions().get(2);
assertThat(addInsn.getOperation(), is(BinaryOperation.ADD));
assertThat(addInsn.getOperandType(), is(NumericOperandType.INT));
assertThat(addInsn.getFirstOperand().getIndex(), is(0));
assertThat(addInsn.getSecondOperand().getIndex(), is(1));
assertThat(addInsn.getReceiver().getIndex(), is(2));
subInsn = (BinaryInstruction)block.getInstructions().get(3);
assertThat(subInsn.getOperation(), is(BinaryOperation.SUBTRACT));
assertThat(subInsn.getOperandType(), is(NumericOperandType.INT));
assertThat(subInsn.getFirstOperand().getIndex(), is(2));
assertThat(subInsn.getSecondOperand().getIndex(), is(0));
assertThat(subInsn.getReceiver().getIndex(), is(3));
}
private Program inputOutput(Program program) {
InMemorySymbolTable symbolTable = new InMemorySymbolTable();
InMemorySymbolTable fileTable = new InMemorySymbolTable();
ProgramIO programIO = new ProgramIO(symbolTable, fileTable);
try (ByteArrayOutputStream output = new ByteArrayOutputStream()) {
programIO.write(program, output);
try (ByteArrayInputStream input = new ByteArrayInputStream(output.toByteArray())) {
return programIO.read(input);
}
} catch (IOException e) {
throw new AssertionError("This exception should not be thrown", e);
}
}
private static class InMemorySymbolTable implements SymbolTable {
private List<String> symbols = new ArrayList<>();
private Map<String, Integer> indexes = new HashMap<>();
@Override
public String at(int index) {
return symbols.get(index);
}
@Override
public int lookup(String symbol) {
Integer index = indexes.get(symbol);
if (index == null) {
index = symbols.size();
symbols.add(symbol);
indexes.put(symbol, index);
}
return index;
}
}
}