Example usage for org.objectweb.asm Opcodes IFLT

Introduction

In this page you can find the example usage for org.objectweb.asm Opcodes IFLT.

Prototype

int IFLT

To view the source code for org.objectweb.asm Opcodes IFLT.

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Usage

From source file:com.google.template.soy.jbcsrc.restricted.BytecodeUtils.java

License:Apache License

private static void checkIntComparisonOpcode(Type comparisonType, int opcode) {
    switch (opcode) {
    case Opcodes.IFEQ:
    case Opcodes.IFNE:
        return;// w w w .jav a 2 s. c  om
    case Opcodes.IFGT:
    case Opcodes.IFGE:
    case Opcodes.IFLT:
    case Opcodes.IFLE:
        if (comparisonType.getSort() == Type.ARRAY || comparisonType.getSort() == Type.OBJECT) {
            throw new IllegalArgumentException(
                    "Type: " + comparisonType + " cannot be compared via " + Printer.OPCODES[opcode]);
        }
        return;
    default:
        throw new IllegalArgumentException("Unsupported opcode for comparison operation: " + opcode);
    }
}

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From source file:com.google.template.soy.jbcsrc.restricted.BytecodeUtilsTest.java

License:Apache License

@Test
public void testCompareLongs() {
    Expression one = constant(1L);
    Expression two = constant(2L);
    assertThatExpression(compare(Opcodes.IFNE, one, two)).evaluatesTo(true);
    assertThatExpression(compare(Opcodes.IFLT, one, two)).evaluatesTo(true);
    assertThatExpression(compare(Opcodes.IFLE, one, two)).evaluatesTo(true);
    assertThatExpression(compare(Opcodes.IFGT, one, two)).evaluatesTo(false);
    assertThatExpression(compare(Opcodes.IFGE, one, two)).evaluatesTo(false);
    assertThatExpression(compare(Opcodes.IFEQ, one, two)).evaluatesTo(false);

    assertThatExpression(compare(Opcodes.IFLE, two, two)).evaluatesTo(true);
    assertThatExpression(compare(Opcodes.IFGE, two, two)).evaluatesTo(true);
}

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From source file:com.google.template.soy.jbcsrc.restricted.BytecodeUtilsTest.java

License:Apache License

@Test
public void testCompareDoubles() {
    Expression one = constant(1D);
    Expression two = constant(2D);
    Expression nan = constant(Double.NaN);

    assertThatExpression(compare(Opcodes.IFNE, one, two)).evaluatesTo(true);
    assertThatExpression(compare(Opcodes.IFLT, one, two)).evaluatesTo(true);
    assertThatExpression(compare(Opcodes.IFLE, one, two)).evaluatesTo(true);
    assertThatExpression(compare(Opcodes.IFGT, one, two)).evaluatesTo(false);
    assertThatExpression(compare(Opcodes.IFGE, one, two)).evaluatesTo(false);
    assertThatExpression(compare(Opcodes.IFEQ, one, two)).evaluatesTo(false);

    assertThatExpression(compare(Opcodes.IFLE, two, two)).evaluatesTo(true);
    assertThatExpression(compare(Opcodes.IFGE, two, two)).evaluatesTo(true);

    // There are special cases for NaN that we need to test, basically every expression involving
    // NaN should evaluate to false with the exception of NaN != * which always == true
    assertThatExpression(compare(Opcodes.IFNE, nan, two)).evaluatesTo(true);
    assertThatExpression(compare(Opcodes.IFNE, two, nan)).evaluatesTo(true);
    assertThatExpression(compare(Opcodes.IFNE, nan, nan)).evaluatesTo(true);

    assertThatExpression(compare(Opcodes.IFEQ, nan, two)).evaluatesTo(false);
    assertThatExpression(compare(Opcodes.IFEQ, two, nan)).evaluatesTo(false);
    assertThatExpression(compare(Opcodes.IFEQ, nan, nan)).evaluatesTo(false);

    assertThatExpression(compare(Opcodes.IFLE, nan, two)).evaluatesTo(false);
    assertThatExpression(compare(Opcodes.IFLE, two, nan)).evaluatesTo(false);
    assertThatExpression(compare(Opcodes.IFLT, nan, two)).evaluatesTo(false);
    assertThatExpression(compare(Opcodes.IFLT, two, nan)).evaluatesTo(false);
    assertThatExpression(compare(Opcodes.IFGE, nan, two)).evaluatesTo(false);
    assertThatExpression(compare(Opcodes.IFGE, two, nan)).evaluatesTo(false);
    assertThatExpression(compare(Opcodes.IFGT, nan, two)).evaluatesTo(false);
    assertThatExpression(compare(Opcodes.IFGT, two, nan)).evaluatesTo(false);
}

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From source file:com.google.template.soy.jbcsrc.SoyNodeCompiler.java

License:Apache License

@Override
protected Statement visitForeachNode(ForeachNode node) {
    ForeachNonemptyNode nonEmptyNode = (ForeachNonemptyNode) node.getChild(0);
    SoyExpression expr = exprCompiler.compile(node.getExpr()).unboxAs(List.class);
    Scope scope = variables.enterScope();
    final Variable listVar = scope.createSynthetic(SyntheticVarName.foreachLoopList(nonEmptyNode), expr, STORE);
    final Variable indexVar = scope.createSynthetic(SyntheticVarName.foreachLoopIndex(nonEmptyNode),
            constant(0), STORE);//from w w  w  .  j a v a 2s  .com
    final Variable listSizeVar = scope.createSynthetic(SyntheticVarName.foreachLoopLength(nonEmptyNode),
            MethodRef.LIST_SIZE.invoke(listVar.local()), DERIVED);
    final Variable itemVar = scope.create(nonEmptyNode.getVarName(),
            MethodRef.LIST_GET.invoke(listVar.local(), indexVar.local()).cast(SOY_VALUE_PROVIDER_TYPE),
            SaveStrategy.DERIVED);
    final Statement loopBody = visitChildrenInNewScope(nonEmptyNode);
    final Statement exitScope = scope.exitScope();

    // it important for this to be generated after exitScope is called (or before enterScope)
    final Statement emptyBlock = node.numChildren() == 2
            ? visitChildrenInNewScope((ForeachIfemptyNode) node.getChild(1))
            : null;
    return new Statement() {
        @Override
        void doGen(CodeBuilder adapter) {
            listVar.initializer().gen(adapter);
            listSizeVar.initializer().gen(adapter);
            listSizeVar.local().gen(adapter);
            Label emptyListLabel = new Label();
            adapter.ifZCmp(Opcodes.IFEQ, emptyListLabel);
            indexVar.initializer().gen(adapter);
            Label loopStart = adapter.mark();
            itemVar.initializer().gen(adapter);

            loopBody.gen(adapter);

            adapter.iinc(indexVar.local().index(), 1); // index++
            indexVar.local().gen(adapter);
            listSizeVar.local().gen(adapter);
            adapter.ifICmp(Opcodes.IFLT, loopStart); // if index < list.size(), goto loopstart
            // exit the loop
            exitScope.gen(adapter);

            if (emptyBlock != null) {
                Label skipIfEmptyBlock = new Label();
                adapter.goTo(skipIfEmptyBlock);
                adapter.mark(emptyListLabel);
                emptyBlock.gen(adapter);
                adapter.mark(skipIfEmptyBlock);
            } else {
                adapter.mark(emptyListLabel);
            }
        }
    };
}

---

From source file:com.google.test.metric.asm.MethodVisitorBuilder.java

License:Apache License

public void visitJumpInsn(final int opcode, final Label label) {
    if (opcode == Opcodes.GOTO) {
        recorder.add(new Runnable() {
            public void run() {
                block.addOp(new Transform(lineNumber, "GOTO", null, null, null));
                block.unconditionalGoto(label);
            }//from w w  w  .j a  va2 s  . co m
        });
    } else if (opcode == Opcodes.JSR) {
        recorder.add(new Runnable() {
            public void run() {
                block.jumpSubroutine(label, lineNumber);
            }
        });
    } else {
        recorder.add(new Runnable() {
            public void run() {
                cyclomaticComplexity.add(lineNumber);
                switch (opcode) {
                case Opcodes.IFEQ:
                    if1("IFEQ");
                    break;
                case Opcodes.IFNE:
                    if1("IFNE");
                    break;
                case Opcodes.IFLT:
                    if1("IFLT");
                    break;
                case Opcodes.IFGE:
                    if1("IFGE");
                    break;
                case Opcodes.IFGT:
                    if1("IFGT");
                    break;
                case Opcodes.IFLE:
                    if1("IFLE");
                    break;
                case Opcodes.IFNONNULL:
                    if1("IFNONNULL");
                    break;
                case Opcodes.IFNULL:
                    if1("IFNULL");
                    break;
                case Opcodes.IF_ACMPEQ:
                    if2("IF_ACMPEQ");
                    break;
                case Opcodes.IF_ACMPNE:
                    if2("IF_ACMPNE");
                    break;
                case Opcodes.IF_ICMPEQ:
                    if2("IF_ICMPEQ");
                    break;
                case Opcodes.IF_ICMPGE:
                    if2("IF_ICMPGE");
                    break;
                case Opcodes.IF_ICMPGT:
                    if2("IF_ICMPGT");
                    break;
                case Opcodes.IF_ICMPLE:
                    if2("IF_ICMPLE");
                    break;
                case Opcodes.IF_ICMPLT:
                    if2("IF_ICMPLT");
                    break;
                case Opcodes.IF_ICMPNE:
                    if2("IF_ICMPNE");
                    break;
                default:
                    throw new UnsupportedOperationException("" + opcode);
                }
                block.conditionalGoto(label);
            }

            private void if1(String name) {
                block.addOp(new Transform(lineNumber, name, JavaType.INT, null, null));
            }

            private void if2(String name) {
                block.addOp(new Transform(lineNumber, name, JavaType.INT, JavaType.INT, null));
            }
        });
    }
}

---

From source file:com.mebigfatguy.junitflood.jvm.OperandStack.java

License:Apache License

public void performJumpInsn(int opcode, Label label) {
    switch (opcode) {
    case Opcodes.IFEQ:
    case Opcodes.IFNE:
    case Opcodes.IFLT:
    case Opcodes.IFGE:
    case Opcodes.IFGT:
    case Opcodes.IFLE:
    case Opcodes.IFNULL:
    case Opcodes.IFNONNULL:
        pop();/*w  w  w  .jav  a 2 s.  com*/
        break;

    case Opcodes.IF_ICMPEQ:
    case Opcodes.IF_ICMPNE:
    case Opcodes.IF_ICMPLT:
    case Opcodes.IF_ICMPGE:
    case Opcodes.IF_ICMPGT:
    case Opcodes.IF_ICMPLE:
    case Opcodes.IF_ACMPEQ:
    case Opcodes.IF_ACMPNE:
        pop2();
        break;

    case Opcodes.GOTO:
        //nop
        break;

    case Opcodes.JSR:
        //nop -- a fudge
        break;
    }
}

---

From source file:com.nginious.http.xsp.expr.LessEqualsOperator.java

License:Apache License

/**
 * Creates bytecode for evaluating the argument values as doubles. The bytecode
 * is generated using the specified method visitor.
 * /*from  w w w .j  a  v a  2  s.  c om*/
 * @param visitor the method visitor
 */
private void compileDouble(MethodVisitor visitor) {
    Label labelFalse = new Label();
    Label labelEnd = new Label();

    value2.compile(visitor, Type.DOUBLE);
    value1.compile(visitor, Type.DOUBLE);

    visitor.visitInsn(Opcodes.DCMPL);
    visitor.visitJumpInsn(Opcodes.IFLT, labelFalse);

    // True
    visitor.visitLdcInsn(true);
    visitor.visitJumpInsn(Opcodes.GOTO, labelEnd);

    // False
    visitor.visitLabel(labelFalse);
    visitor.visitLdcInsn(false);

    visitor.visitLabel(labelEnd);
}

---

From source file:com.nginious.http.xsp.expr.MoreEqualsOperator.java

License:Apache License

/**
 * Creates bytecode for evaluating the argument values as doubles. The bytecode
 * is generated using the specified method visitor.
 * /*from  w  ww  .  ja va 2 s  .  c  o  m*/
 * @param visitor the method visitor
 */
private void compileDouble(MethodVisitor visitor) {
    Label labelFalse = new Label();
    Label labelEnd = new Label();

    value1.compile(visitor, Type.DOUBLE);
    value2.compile(visitor, Type.DOUBLE);

    visitor.visitInsn(Opcodes.DCMPL);
    visitor.visitJumpInsn(Opcodes.IFLT, labelFalse);

    // True
    visitor.visitLdcInsn(true);
    visitor.visitJumpInsn(Opcodes.GOTO, labelEnd);

    // False
    visitor.visitLabel(labelFalse);
    visitor.visitLdcInsn(false);

    visitor.visitLabel(labelEnd);
}

---

From source file:com.retroduction.carma.transformer.asm.ror.IFGE_2_IFLT_Transition.java

License:Open Source License

public IFGE_2_IFLT_Transition() {
    super();
    this.sourceInstruction = Opcodes.IFGE;
    this.targetInstruction = Opcodes.IFLT;
}

---

From source file:com.retroduction.carma.transformer.asm.ror.IFLT_2_IFGE_Transition.java

License:Open Source License

public IFLT_2_IFGE_Transition() {
    super();
    this.sourceInstruction = Opcodes.IFLT;
    this.targetInstruction = Opcodes.IFGE;
}

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