Examples with Label org.mvel2.asm.Label used on opensource projects

Example 26 with Label

use of org.mvel2.asm.Label in project mvel by mvel.

the class GeneratorAdapter method catchException.

/**
 * Marks the start of an exception handler.
 *
 * @param start
 *            beginning of the exception handler's scope (inclusive).
 * @param end
 *            end of the exception handler's scope (exclusive).
 * @param exception
 *            internal name of the type of exceptions handled by the
 *            handler.
 */
public void catchException(final Label start, final Label end, final Type exception) {
    Label doCatch = new Label();
    if (exception == null) {
        mv.visitTryCatchBlock(start, end, doCatch, null);
    } else {
        mv.visitTryCatchBlock(start, end, doCatch, exception.getInternalName());
    }
    mark(doCatch);
}

Example 27 with Label

use of org.mvel2.asm.Label in project mvel by mikebrock.

the class ASMAccessorOptimizer method _finishJIT.

private void _finishJIT() {
    if (deferFinish) {
        return;
    }
    if (returnType != null && returnType.isPrimitive()) {
        // noinspection unchecked
        wrapPrimitive(returnType);
    }
    if (returnType == void.class) {
        assert debug("ACONST_NULL");
        mv.visitInsn(ACONST_NULL);
    }
    assert debug("ARETURN");
    mv.visitInsn(ARETURN);
    assert debug("\n{METHOD STATS (maxstack=" + stacksize + ")}\n");
    // dump advanced debugging if necessary
    dumpAdvancedDebugging();
    mv.visitMaxs(stacksize, maxlocals);
    mv.visitEnd();
    mv = cw.visitMethod(ACC_PUBLIC, "getKnownEgressType", "()Ljava/lang/Class;", null, null);
    mv.visitCode();
    mv.visitLdcInsn(org.mvel2.asm.Type.getType(returnType != null ? returnType : Object.class));
    mv.visitInsn(ARETURN);
    mv.visitMaxs(1, 1);
    mv.visitEnd();
    if (propNull) {
        cw.visitField(ACC_PUBLIC, "nullPropertyHandler", "L" + NAMESPACE + "integration/PropertyHandler;", null, null).visitEnd();
    }
    if (methNull) {
        cw.visitField(ACC_PUBLIC, "nullMethodHandler", "L" + NAMESPACE + "integration/PropertyHandler;", null, null).visitEnd();
    }
    buildInputs();
    if (buildLog != null && buildLog.length() != 0 && expr != null) {
        mv = cw.visitMethod(ACC_PUBLIC, "toString", "()Ljava/lang/String;", null, null);
        mv.visitCode();
        Label l0 = new Label();
        mv.visitLabel(l0);
        mv.visitLdcInsn(buildLog.toString() + "\n\n## { " + new String(expr) + " }");
        mv.visitInsn(ARETURN);
        Label l1 = new Label();
        mv.visitLabel(l1);
        mv.visitMaxs(1, 1);
        mv.visitEnd();
    }
    cw.visitEnd();
}

Example 28 with Label

use of org.mvel2.asm.Label in project mvel by mikebrock.

the class ASMAccessorOptimizer method writeFunctionPointerStub.

private void writeFunctionPointerStub(Class c, Method m) {
    ldcClassConstant(c);
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Class", "getMethods", "()[Ljava/lang/reflect/Method;");
    mv.visitVarInsn(ASTORE, 7);
    mv.visitInsn(ICONST_0);
    mv.visitVarInsn(ISTORE, 5);
    mv.visitVarInsn(ALOAD, 7);
    mv.visitInsn(ARRAYLENGTH);
    mv.visitVarInsn(ISTORE, 6);
    Label l1 = new Label();
    mv.visitJumpInsn(GOTO, l1);
    Label l2 = new Label();
    mv.visitLabel(l2);
    mv.visitVarInsn(ALOAD, 7);
    mv.visitVarInsn(ILOAD, 5);
    mv.visitInsn(AALOAD);
    mv.visitVarInsn(ASTORE, 4);
    Label l3 = new Label();
    mv.visitLabel(l3);
    mv.visitLdcInsn(m.getName());
    mv.visitVarInsn(ALOAD, 4);
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/reflect/Method", "getName", "()Ljava/lang/String;");
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/String", "equals", "(Ljava/lang/Object;)Z");
    Label l4 = new Label();
    mv.visitJumpInsn(IFEQ, l4);
    Label l5 = new Label();
    mv.visitLabel(l5);
    mv.visitVarInsn(ALOAD, 4);
    mv.visitInsn(ARETURN);
    mv.visitLabel(l4);
    mv.visitIincInsn(5, 1);
    mv.visitLabel(l1);
    mv.visitVarInsn(ILOAD, 5);
    mv.visitVarInsn(ILOAD, 6);
    mv.visitJumpInsn(IF_ICMPLT, l2);
    Label l6 = new Label();
    mv.visitLabel(l6);
    mv.visitInsn(ACONST_NULL);
    mv.visitInsn(ARETURN);
// deferFinish = true;
}

Example 29 with Label

use of org.mvel2.asm.Label in project mvel by mikebrock.

the class ASMAccessorOptimizer method ldcClassConstant.

private void ldcClassConstant(Class cls) {
    if (OPCODES_VERSION == Opcodes.V1_4) {
        assert debug("LDC \"" + cls.getName() + "\"");
        mv.visitLdcInsn(cls.getName());
        mv.visitMethodInsn(INVOKESTATIC, "java/lang/Class", "forName", "(Ljava/lang/String;)Ljava/lang/Class;");
        Label l4 = new Label();
        mv.visitJumpInsn(GOTO, l4);
        mv.visitTypeInsn(NEW, "java/lang/NoClassDefFoundError");
        mv.visitInsn(DUP_X1);
        mv.visitInsn(SWAP);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Throwable", "getMessage", "()Ljava/lang/String;");
        mv.visitMethodInsn(INVOKESPECIAL, "java/lang/NoClassDefFoundError", "<init>", "(Ljava/lang/String;)V");
        mv.visitInsn(ATHROW);
        mv.visitLabel(l4);
    } else {
        assert debug("LDC " + getType(cls));
        mv.visitLdcInsn(getType(cls));
    }
}

Example 30 with Label

use of org.mvel2.asm.Label in project mvel by mikebrock.

the class ASMAccessorOptimizer method writeOutNullHandler.

private void writeOutNullHandler(Member member, int type) {
    assert debug("DUP");
    mv.visitInsn(DUP);
    Label j = new Label();
    assert debug("IFNONNULL : jump");
    mv.visitJumpInsn(IFNONNULL, j);
    assert debug("POP");
    mv.visitInsn(POP);
    assert debug("ALOAD 0");
    mv.visitVarInsn(ALOAD, 0);
    if (type == 0) {
        this.propNull = true;
        assert debug("GETFIELD 'nullPropertyHandler'");
        mv.visitFieldInsn(GETFIELD, className, "nullPropertyHandler", "L" + NAMESPACE + "integration/PropertyHandler;");
    } else {
        this.methNull = true;
        assert debug("GETFIELD 'nullMethodHandler'");
        mv.visitFieldInsn(GETFIELD, className, "nullMethodHandler", "L" + NAMESPACE + "integration/PropertyHandler;");
    }
    assert debug("LDC '" + member.getName() + "'");
    mv.visitLdcInsn(member.getName());
    assert debug("ALOAD 1");
    mv.visitVarInsn(ALOAD, 1);
    assert debug("ALOAD 3");
    mv.visitVarInsn(ALOAD, 3);
    assert debug("INVOKEINTERFACE PropertyHandler.getProperty");
    mv.visitMethodInsn(INVOKEINTERFACE, NAMESPACE + "integration/PropertyHandler", "getProperty", "(Ljava/lang/String;Ljava/lang/Object;L" + NAMESPACE + "integration/VariableResolverFactory;)Ljava/lang/Object;");
    assert debug("LABEL:jump");
    mv.visitLabel(j);
}