Java Code Examples for org.objectweb.asm.MethodVisitor#visitInvokeDynamicInsn()
The following examples show how to use
org.objectweb.asm.MethodVisitor#visitInvokeDynamicInsn() .
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Example 1
| Source File: IndyCompile.java From cs-summary-reflection with Apache License 2.0 | 7 votes |
|
@Override
void compile(final MethodVisitor mv) {
// compiles e1
e1.compile(mv);
// tests if e1 is false
mv.visitInsn(DUP);
// convert to a boolean
mv.visitInvokeDynamicInsn("asBoolean", "(Ljava/lang/Object;)Z", UNARY);
Label end = new Label();
mv.visitJumpInsn(IFEQ, end);
// case where e1 is true : e1 && e2 is equal to e2
mv.visitInsn(POP);
e2.compile(mv);
// if e1 is false, e1 && e2 is equal to e1:
// we jump directly to this label, without evaluating e2
mv.visitLabel(end);
}
Example 2
| Source File: IndyCompile.java From cs-summary-reflection with Apache License 2.0 | 6 votes |
|
@Override
void compile(final MethodVisitor mv) {
// compiles e1
e1.compile(mv);
// tests if e1 is true
mv.visitInsn(DUP);
// convert to a boolean
mv.visitInvokeDynamicInsn("asBoolean", "(Ljava/lang/Object;)Z", UNARY);
Label end = new Label();
mv.visitJumpInsn(IFNE, end);
// case where e1 is false : e1 || e2 is equal to e2
mv.visitInsn(POP);
e2.compile(mv);
// if e1 is true, e1 || e2 is equal to e1:
// we jump directly to this label, without evaluating e2
mv.visitLabel(end);
}
Example 3
| Source File: BytecodeNegateExpression.java From yql-plus with Apache License 2.0 | 5 votes |
|
@Override
public void generate(CodeEmitter code) {
MethodVisitor mv = code.getMethodVisitor();
Label isNull = new Label();
TypeWidget mathType = getType().unboxed();
if (!mathType.isPrimitive()) {
mv.visitFieldInsn(Opcodes.GETSTATIC, Type.getInternalName(Maths.class), "INSTANCE", Type.getDescriptor(Maths.class));
}
boolean maybeNull = code.cast(mathType, leftExpr.getType(), isNull);
// compute the result
if (mathType.isPrimitive()) {
mv.visitInsn(mathType.getJVMType().getOpcode(Opcodes.INEG));
} else if (mathType.getValueCoreType() == YQLCoreType.ANY) {
String desc = Type.getMethodDescriptor(getType().getJVMType(),
Type.getType(Maths.class),
leftExpr.getType().getJVMType());
mv.visitInvokeDynamicInsn("dyn:callMethod:negate", desc, Dynamic.H_DYNALIB_BOOTSTRAP);
} else {
throw new ProgramCompileException(loc, "Math operation NEGATE is not defined for type %s", mathType.getJVMType());
}
if (!getType().isPrimitive() && mathType.isPrimitive()) {
code.box(mathType);
}
if (maybeNull) {
Label done = new Label();
mv.visitJumpInsn(Opcodes.GOTO, done);
mv.visitLabel(isNull);
mv.visitInsn(Opcodes.ACONST_NULL);
mv.visitLabel(done);
}
}
Example 4
| Source File: InvokeDynamicExpression.java From yql-plus with Apache License 2.0 | 5 votes |
|
@Override
public void generate(CodeEmitter code) {
for (BytecodeExpression arg : arguments) {
arg.generate(code);
}
Type[] argTypes = new Type[arguments.size()];
for (int i = 0; i < arguments.size(); ++i) {
argTypes[i] = arguments.get(i).getType().getJVMType();
}
String desc = Type.getMethodDescriptor(returnType.getJVMType(), argTypes);
MethodVisitor mv = code.getMethodVisitor();
mv.visitInvokeDynamicInsn(operationName, desc, bootstrap, bootstrapArgs);
}
Example 5
| Source File: LambdaTest.java From Despector with MIT License | 5 votes |
|
@Test
public void testMethodRefJavac() {
// apparently javac chooses it add a call to r.getClass() before the
// method ref
TestMethodBuilder builder = new TestMethodBuilder("test_mth", "(Ljava/lang/Runnable;)V");
MethodVisitor mv = builder.getGenerator();
Label start = new Label();
mv.visitLabel(start);
mv.visitVarInsn(ALOAD, 1);
mv.visitInsn(DUP);
mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Object", "getClass", "()Ljava/lang/Class;", false);
mv.visitInsn(POP);
mv.visitInvokeDynamicInsn("run", "(Ljava/lang/Runnable;)Ljava/lang/Runnable;",
new Handle(H_INVOKESTATIC, "java/lang/invoke/LambdaMetafactory", "metafactory",
"(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;"),
new Object[] {Type.getType("()V"), new Handle(H_INVOKEINTERFACE, "java/lang/Runnable", "run", "()V"), Type.getType("()V")});
mv.visitVarInsn(ASTORE, 2);
Label l1 = new Label();
mv.visitLabel(l1);
mv.visitVarInsn(ALOAD, 2);
mv.visitMethodInsn(INVOKEINTERFACE, "java/lang/Runnable", "run", "()V", true);
mv.visitInsn(RETURN);
Label end = new Label();
mv.visitLabel(end);
mv.visitLocalVariable("this", "Lorg/spongepowered/test/ast/LambdaTest;", null, start, end, 0);
mv.visitLocalVariable("r", "Ljava/lang/Runnable;", null, start, end, 1);
mv.visitLocalVariable("a", "Ljava/lang/Runnable;", null, l1, end, 2);
String insn = TestHelper.getAsString(builder.finish(), "test_mth");
String good = "r.getClass();\n"
+ "Runnable a = r::run;\n"
+ "a.run();";
Assert.assertEquals(good, insn);
}
Example 6
| Source File: IndyCompile.java From cs-summary-reflection with Apache License 2.0 | 5 votes |
|
@Override
void compile(final MethodVisitor mv) {
if (value instanceof String) {
mv.visitLdcInsn(value);
return;
}
// instead of pushing the constant and then box it, we use
// invokedynamic with the constant as bootstrap argument. The
// boxing will be performed by the VM when calling the bootstrap
// method
mv.visitInvokeDynamicInsn("cst", "()Ljava/lang/Object;", CST, value);
}
Example 7
| Source File: IndyCompile.java From cs-summary-reflection with Apache License 2.0 | 5 votes |
|
@Override
void compile(final MethodVisitor mv) {
// compiles e1, e2, and adds an instruction to add the two values
e1.compile(mv);
e2.compile(mv);
mv.visitInvokeDynamicInsn(
"add", "(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;", BINARY);
}
Example 8
| Source File: IndyCompile.java From cs-summary-reflection with Apache License 2.0 | 5 votes |
|
@Override
void compile(final MethodVisitor mv) {
// compiles e1, e2, and adds an instruction to multiply the two
// values
e1.compile(mv);
e2.compile(mv);
mv.visitInvokeDynamicInsn(
"mul", "(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;", BINARY);
}
Example 9
| Source File: LambdaTest.java From Despector with MIT License | 5 votes |
|
@Test
public void testMethodRef() {
TestMethodBuilder builder = new TestMethodBuilder("test_mth", "(Ljava/lang/Runnable;)V");
MethodVisitor mv = builder.getGenerator();
Label start = new Label();
mv.visitLabel(start);
mv.visitVarInsn(ALOAD, 1);
mv.visitInvokeDynamicInsn("run", "(Ljava/lang/Runnable;)Ljava/lang/Runnable;",
new Handle(H_INVOKESTATIC, "java/lang/invoke/LambdaMetafactory", "metafactory",
"(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;"),
new Object[] {Type.getType("()V"), new Handle(H_INVOKEINTERFACE, "java/lang/Runnable", "run", "()V"), Type.getType("()V")});
mv.visitVarInsn(ASTORE, 2);
Label l1 = new Label();
mv.visitLabel(l1);
mv.visitVarInsn(ALOAD, 2);
mv.visitMethodInsn(INVOKEINTERFACE, "java/lang/Runnable", "run", "()V", true);
mv.visitInsn(RETURN);
Label end = new Label();
mv.visitLabel(end);
mv.visitLocalVariable("this", "Lorg/spongepowered/test/ast/LambdaTest;", null, start, end, 0);
mv.visitLocalVariable("r", "Ljava/lang/Runnable;", null, start, end, 1);
mv.visitLocalVariable("a", "Ljava/lang/Runnable;", null, l1, end, 2);
String insn = TestHelper.getAsString(builder.finish(), "test_mth");
String good = "Runnable a = r::run;\n"
+ "a.run();";
Assert.assertEquals(good, insn);
}
Example 10
| Source File: JCasClassConversion.java From uima-uimaj with Apache License 2.0 | 5 votes |
|
void genv3_setter(String name, String type) {
MethodVisitor mv = cv.visitMethod(ACC_PUBLIC, "set" + up1st(name), "(" + type + ")V", null, null);
mv.visitCode();
mv.visitVarInsn(ALOAD, 0);
mv.visitFieldInsn(GETFIELD, classname, "_casView", "Lorg/apache/uima/cas/impl/CASImpl;");
mv.visitVarInsn(ALOAD, 0);
mv.visitFieldInsn(GETSTATIC, classname, "_FI_" + name, "I");
mv.visitVarInsn(ALOAD, 0);
mv.visitVarInsn(ILOAD, 1);
mv.visitInvokeDynamicInsn("run",
"(Lorg/apache/uima/jcas/tcas/Annotation;I)Ljava/lang/Runnable;",
new Handle(Opcodes.H_INVOKESTATIC, "java/lang/invoke/LambdaMetafactory", "metafactory",
"(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;"
+ "Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;"),
new Object[] {
Type.getType("()V"),
new Handle(Opcodes.H_INVOKESPECIAL,
"org/apache/uima/jcas/tcas/Annotation",
"lambda$0",
"(I)V"),
Type.getType("()V") });
mv.visitMethodInsn(INVOKEVIRTUAL, "org/apache/uima/cas/impl/CASImpl",
"setWithCheckAndJournalJFRI", "(Lorg/apache/uima/jcas/cas/TOP;ILjava/lang/Runnable;)V",
false);
mv.visitInsn(RETURN);
mv.visitMaxs(5, 2);
mv.visitEnd();
}
Example 11
| Source File: LambdaTest.java From Despector with MIT License | 5 votes |
|
@Test
public void testConsumer() {
TestMethodBuilder builder = new TestMethodBuilder("test_mth", "()V");
MethodVisitor mv = builder.getGenerator();
Label start = new Label();
mv.visitLabel(start);
if (TestHelper.IS_ECLIPSE) {
mv.visitInvokeDynamicInsn("accept", "()Ljava/util/function/Consumer;",
new Handle(H_INVOKESTATIC, "java/lang/invoke/LambdaMetafactory", "metafactory",
"(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;"),
new Object[] {Type.getType("(Ljava/lang/Object;)V"),
new Handle(H_INVOKESTATIC, "org/spongepowered/test/ast/LambdaTest", "lambda$1", "(Ljava/lang/Object;)V"),
Type.getType("(Ljava/lang/Object;)V")});
} else {
// javac adds an extra decoration to the lambda method name with the
// name of the calling method
mv.visitInvokeDynamicInsn("accept", "()Ljava/util/function/Consumer;",
new Handle(H_INVOKESTATIC, "java/lang/invoke/LambdaMetafactory", "metafactory",
"(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;"),
new Object[] {Type.getType("(Ljava/lang/Object;)V"),
new Handle(H_INVOKESTATIC, "org/spongepowered/test/ast/LambdaTest", "lambda$test_consumer$1", "(Ljava/lang/Object;)V"),
Type.getType("(Ljava/lang/Object;)V")});
}
mv.visitVarInsn(ASTORE, 1);
Label l1 = new Label();
mv.visitLabel(l1);
mv.visitVarInsn(ALOAD, 1);
mv.visitInsn(ACONST_NULL);
mv.visitMethodInsn(INVOKEINTERFACE, "java/util/function/Consumer", "accept", "(Ljava/lang/Object;)V", true);
mv.visitInsn(RETURN);
Label end = new Label();
mv.visitLabel(end);
mv.visitLocalVariable("this", "Lorg/spongepowered/test/ast/LambdaTest;", null, start, end, 0);
mv.visitLocalVariable("r", "Ljava/util/function/Consumer;", "Ljava/util/function/Consumer<Ljava/lang/Object;>;", l1, end, 1);
String insn = TestHelper.getAsString(builder.finish(), "test_mth");
String good = "java.util.function.Consumer<Object> r = (obj) -> System.out.println(\"Hello World\");\n"
+ "r.accept(null);";
Assert.assertEquals(good, insn);
}
Example 12
| Source File: LambdaTest.java From Despector with MIT License | 5 votes |
|
@Test
public void testLambda() {
TestMethodBuilder builder = new TestMethodBuilder("test_mth", "()V");
MethodVisitor mv = builder.getGenerator();
Label start = new Label();
mv.visitLabel(start);
if (TestHelper.IS_ECLIPSE) {
mv.visitInvokeDynamicInsn("run", "()Ljava/lang/Runnable;",
new Handle(H_INVOKESTATIC, "java/lang/invoke/LambdaMetafactory", "metafactory",
"(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;"),
new Object[] {Type.getType("()V"), new Handle(H_INVOKESTATIC, "org/spongepowered/test/ast/LambdaTest", "lambda$0", "()V"),
Type.getType("()V")});
} else {
// javac adds an extra decoration to the lambda method name with the
// name of the calling method
mv.visitInvokeDynamicInsn("run", "()Ljava/lang/Runnable;",
new Handle(H_INVOKESTATIC, "java/lang/invoke/LambdaMetafactory", "metafactory",
"(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;"),
new Object[] {Type.getType("()V"),
new Handle(H_INVOKESTATIC, "org/spongepowered/test/ast/LambdaTest", "lambda$test_lambda$0", "()V"),
Type.getType("()V")});
}
mv.visitVarInsn(ASTORE, 1);
Label l1 = new Label();
mv.visitLabel(l1);
mv.visitVarInsn(ALOAD, 1);
mv.visitMethodInsn(INVOKEINTERFACE, "java/lang/Runnable", "run", "()V", true);
mv.visitInsn(RETURN);
Label end = new Label();
mv.visitLabel(end);
mv.visitLocalVariable("this", "Lorg/spongepowered/test/ast/LambdaTest;", null, start, end, 0);
mv.visitLocalVariable("r", "Ljava/lang/Runnable;", null, l1, end, 1);
String insn = TestHelper.getAsString(builder.finish(), "test_mth");
String good = "Runnable r = () -> System.out.println(\"Hello World\");\n"
+ "r.run();";
Assert.assertEquals(good, insn);
}
Example 13
| Source File: BytecodeArithmeticExpression.java From yql-plus with Apache License 2.0 | 4 votes |
|
@Override
public void generate(CodeEmitter code) {
MethodVisitor mv = code.getMethodVisitor();
Label isNull = new Label();
TypeWidget mathType = getType().unboxed();
if (!mathType.isPrimitive() || op == ArithmeticOperation.POW) {
mv.visitFieldInsn(Opcodes.GETSTATIC, Type.getInternalName(Maths.class), "INSTANCE", Type.getDescriptor(Maths.class));
mv.visitFieldInsn(Opcodes.GETSTATIC, Type.getInternalName(ArithmeticOperation.class), op.name(), Type.getDescriptor(ArithmeticOperation.class));
}
CodeEmitter.Unification out = code.unifyAs(mathType, leftExpr, rightExpr, isNull, isNull, isNull);
// now we have both sides unified as (if possible) a primitive type
// compute the result
if (mathType.isPrimitive()) {
switch (op) {
case ADD:
mv.visitInsn(mathType.getJVMType().getOpcode(Opcodes.IADD));
break;
case SUB:
mv.visitInsn(mathType.getJVMType().getOpcode(Opcodes.ISUB));
break;
case MULT:
mv.visitInsn(mathType.getJVMType().getOpcode(Opcodes.IMUL));
break;
case DIV:
mv.visitInsn(mathType.getJVMType().getOpcode(Opcodes.IDIV));
break;
case MOD:
mv.visitInsn(mathType.getJVMType().getOpcode(Opcodes.IREM));
break;
case POW:
mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, Type.getInternalName(Maths.class), "binaryMath",
Type.getMethodDescriptor(mathType.getJVMType(),
Type.getType(ArithmeticOperation.class),
mathType.getJVMType(),
mathType.getJVMType()), false);
break;
default:
throw new ProgramCompileException(loc, "Unknown BinaryMath operation: " + op);
}
} else if (mathType.getValueCoreType() == YQLCoreType.ANY) {
String desc = Type.getMethodDescriptor(getType().getJVMType(),
Type.getType(Maths.class),
Type.getType(ArithmeticOperation.class),
leftExpr.getType().boxed().getJVMType(),
rightExpr.getType().boxed().getJVMType());
mv.visitInvokeDynamicInsn("dyn:callMethod:binaryMath", desc, Dynamic.H_DYNALIB_BOOTSTRAP);
} else {
throw new ProgramCompileException(loc, "Math operation %s is not defined for type %s", op, mathType.getJVMType());
}
if (!getType().isPrimitive() && mathType.isPrimitive()) {
code.box(mathType);
}
if (out.nullPossible) {
Label done = new Label();
mv.visitJumpInsn(Opcodes.GOTO, done);
mv.visitLabel(isNull);
if (!mathType.isPrimitive() || op == ArithmeticOperation.POW) {
mv.visitInsn(Opcodes.POP2);
}
mv.visitInsn(Opcodes.ACONST_NULL);
mv.visitLabel(done);
}
}
Example 14
| Source File: InvokeDynamicInsnNode.java From JReFrameworker with MIT License | 4 votes |
|
@Override
public void accept(final MethodVisitor methodVisitor) {
methodVisitor.visitInvokeDynamicInsn(name, desc, bsm, bsmArgs);
acceptAnnotations(methodVisitor);
}
Example 15
| Source File: InvokeDynamicInsnNode.java From JReFrameworker with MIT License | 4 votes |
|
@Override
public void accept(final MethodVisitor methodVisitor) {
methodVisitor.visitInvokeDynamicInsn(name, desc, bsm, bsmArgs);
acceptAnnotations(methodVisitor);
}
Example 16
| Source File: IndyCompile.java From cs-summary-reflection with Apache License 2.0 | 4 votes |
|
@Override
void compile(final MethodVisitor mv) {
// compiles e, and applies 'not'
e.compile(mv);
mv.visitInvokeDynamicInsn("not", "(Ljava/lang/Object;)Ljava/lang/Object;", UNARY);
}
Example 17
| Source File: IndyStaticTypesMultiTypeDispatcher.java From groovy with Apache License 2.0 | 4 votes |
|
@Override public void call(MethodVisitor mv) {
mv.visitInvokeDynamicInsn(name, signature, BSM);
}
Example 18
| Source File: ComplexIndyGenerator.java From bumblebench with Apache License 2.0 | 4 votes |
|
public static byte[] makeExample() throws Throwable {
ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES);
cw.visit(V1_7, ACC_PUBLIC | ACC_SUPER, "ComplexIndy", null, "java/lang/Object", null);
MethodVisitor mv;
{
mv = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "gwtTest", "(Ljava/lang/Object;)Ljava/lang/String;", null, null);
mv.visitCode();
mv.visitVarInsn(ALOAD, 0);
mv.visitInvokeDynamicInsn("gwtBootstrap", "(Ljava/lang/Object;)Ljava/lang/String;",
new Handle(
H_INVOKESTATIC,
"BootstrapMethods",
"fibBootstrap",
Type.getType(
"(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;"
).getDescriptor())
);
mv.visitInsn(ARETURN);
mv.visitMaxs(0, 0);
mv.visitEnd();
}
{
mv = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "fibIndy", "(I)I", null, null);
mv.visitCode();
mv.visitVarInsn(ILOAD, 0);
mv.visitInvokeDynamicInsn("fibBootstrap", "(I)I",
new Handle(
H_INVOKESTATIC,
"BootstrapMethods",
"fibBootstrap",
Type.getType(
"(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;"
).getDescriptor())
);
mv.visitInsn(IRETURN);
mv.visitMaxs(0, 0);
mv.visitEnd();
}
cw.visitEnd();
return cw.toByteArray();
}
Example 19
| Source File: DynamicInvocationExpr.java From maple-ir with GNU General Public License v3.0 | 4 votes |
|
@Override
protected void generateCallCode(MethodVisitor visitor) {
visitor.visitInvokeDynamicInsn(boundName, getBootstrapDesc(), bootstrapMethod, bootstrapArgs);
}
Example 20
| Source File: InvokeDynamicInsnNode.java From Concurnas with MIT License | 4 votes |
|
@Override
public void accept(final MethodVisitor methodVisitor) {
methodVisitor.visitInvokeDynamicInsn(name, desc, bsm, bsmArgs);
acceptAnnotations(methodVisitor);
}
