JavaTX/JavaCompilerCore
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Änderungen an IFStmt

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This commit is contained in:
JanUlrich 2015-10-15 16:15:13 +02:00
parent f23a341d72
commit a541b353cd
7 changed files with 84 additions and 3 deletions
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6
BCEL/bcelifier/BooleanValue.java Normal file
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@ -0,0 +1,6 @@
package bcelifier;
public class BooleanValue {
Boolean c = true;
Boolean b = c.booleanValue();
}

63
BCEL/bcelifier/BooleanValueCreator.java Normal file
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@ -0,0 +1,63 @@
package bcelifier;
import org.apache.commons.bcel6.generic.*;
import org.apache.commons.bcel6.classfile.*;
import org.apache.commons.bcel6.*;
import java.io.*;
public class BooleanValueCreator implements Constants {
private InstructionFactory _factory;
private ConstantPoolGen _cp;
private ClassGen _cg;
public BooleanValueCreator() {
_cg = new ClassGen("bcelifier.BooleanValue", "java.lang.Object", "BooleanValue.java", ACC_PUBLIC | ACC_SUPER, new String[] { });
_cp = _cg.getConstantPool();
_factory = new InstructionFactory(_cg, _cp);
}
public void create(OutputStream out) throws IOException {
createFields();
createMethod_0();
_cg.getJavaClass().dump(out);
}
private void createFields() {
FieldGen field;
field = new FieldGen(0, new ObjectType("java.lang.Boolean"), "c", _cp);
_cg.addField(field.getField());
field = new FieldGen(0, new ObjectType("java.lang.Boolean"), "b", _cp);
_cg.addField(field.getField());
}
private void createMethod_0() {
InstructionList il = new InstructionList();
MethodGen method = new MethodGen(ACC_PUBLIC, Type.VOID, Type.NO_ARGS, new String[] { }, "<init>", "bcelifier.BooleanValue", il, _cp);
InstructionHandle ih_0 = il.append(_factory.createLoad(Type.OBJECT, 0));
il.append(_factory.createInvoke("java.lang.Object", "<init>", Type.VOID, Type.NO_ARGS, Constants.INVOKESPECIAL));
InstructionHandle ih_4 = il.append(_factory.createLoad(Type.OBJECT, 0));
il.append(new PUSH(_cp, 1));
il.append(_factory.createInvoke("java.lang.Boolean", "valueOf", new ObjectType("java.lang.Boolean"), new Type[] { Type.BOOLEAN }, Constants.INVOKESTATIC));
il.append(_factory.createFieldAccess("bcelifier.BooleanValue", "c", new ObjectType("java.lang.Boolean"), Constants.PUTFIELD));
InstructionHandle ih_12 = il.append(_factory.createLoad(Type.OBJECT, 0));
il.append(_factory.createLoad(Type.OBJECT, 0));
il.append(_factory.createFieldAccess("bcelifier.BooleanValue", "c", new ObjectType("java.lang.Boolean"), Constants.GETFIELD));
il.append(_factory.createInvoke("java.lang.Boolean", "booleanValue", Type.BOOLEAN, Type.NO_ARGS, Constants.INVOKEVIRTUAL));
il.append(_factory.createInvoke("java.lang.Boolean", "valueOf", new ObjectType("java.lang.Boolean"), new Type[] { Type.BOOLEAN }, Constants.INVOKESTATIC));
il.append(_factory.createFieldAccess("bcelifier.BooleanValue", "b", new ObjectType("java.lang.Boolean"), Constants.PUTFIELD));
InstructionHandle ih_26 = il.append(_factory.createReturn(Type.VOID));
method.setMaxStack();
method.setMaxLocals();
_cg.addMethod(method.getMethod());
il.dispose();
}
public static void main(String[] args) throws Exception {
bcelifier.BooleanValueCreator creator = new bcelifier.BooleanValueCreator();
creator.create(new FileOutputStream("bcelifier.BooleanValue.class"));
}
}

1
BCEL/bcelifier/JavaToBCEL.java
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@ -31,6 +31,7 @@ public class JavaToBCEL {
new BCELifier(new ClassParser(rootDirectory+"Null.class").parse(), new FileOutputStream(new File(rootDirectory+"NullCreator.java"))).start();
new BCELifier(new ClassParser(rootDirectory+"LocalVarAccess.class").parse(), new FileOutputStream(new File(rootDirectory+"LocalVarAccessCreator.java"))).start();
new BCELifier(new ClassParser(rootDirectory+"Wildcard.class").parse(), new FileOutputStream(new File(rootDirectory+"WildcardCreator.java"))).start();
new BCELifier(new ClassParser(rootDirectory+"BooleanValue.class").parse(), new FileOutputStream(new File(rootDirectory+"BooleanValueCreator.java"))).start();
} catch (ClassFormatException | IOException e) {
e.printStackTrace();

2
src/de/dhbwstuttgart/syntaxtree/statement/IfStmt.java
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@ -185,6 +185,8 @@ public class IfStmt extends Statement
IfInstruction ifInstruction = new IFEQ(null);
il.append(expr.genByteCode(_cg));
//Anmerkung: expr ist vom Typ java.lang.Boolean (per Definition)
il.append(_factory.createInvoke("java.lang.Boolean", "booleanValue", org.apache.commons.bcel6.generic.Type.BOOLEAN, org.apache.commons.bcel6.generic.Type.NO_ARGS, Constants.INVOKEVIRTUAL));
il.append(ifInstruction);
il.append(then_block.genByteCode(_cg));

2
src/de/dhbwstuttgart/syntaxtree/type/RefType.java
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@ -814,7 +814,7 @@ public class RefType extends ObjectType implements IMatchable
}
public org.apache.commons.bcel6.generic.Type getBytecodeType(ClassGenerator cg) {
return new org.apache.commons.bcel6.generic.ObjectType(this.getTypeName());
return new org.apache.commons.bcel6.generic.ObjectType(this.getTypeName());
}
@Override

4
test/bytecode/IfElseStatement.jav
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@ -1,9 +1,9 @@
class IfElseStatement{
method(flag){
if(flag){
return 0;
}else{
return 1;
}
}
}

9
test/bytecode/IfTest.java Normal file
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@ -0,0 +1,9 @@
class IfTest{
public static void main(String[] args){
System.out.println(new IfElseStatement().method(true));
System.out.println(new IfElseStatement().method(false));
}
}