private void doConvertAndCast(ClassNode targetType, boolean coerce) { int size = stack.size(); throwExceptionForNoStackElement(size, targetType, coerce); ClassNode top = stack.get(size - 1); targetType = targetType.redirect(); if (targetType == top) return; if (coerce) { controller.getInvocationWriter().coerce(top, targetType); return; } boolean primTarget = ClassHelper.isPrimitiveType(targetType); boolean primTop = ClassHelper.isPrimitiveType(top); if (primTop && primTarget) { // here we box and unbox to get the goal type if (convertPrimitive(top, targetType)) { replace(targetType); return; } box(); } else if (primTop) { // top is primitive, target is not // so box and do groovy cast controller.getInvocationWriter().castToNonPrimitiveIfNecessary(top, targetType); } else if (primTarget) { // top is not primitive so unbox // leave that BH#doCast later } else { controller.getInvocationWriter().castToNonPrimitiveIfNecessary(top, targetType); } MethodVisitor mv = controller.getMethodVisitor(); if (primTarget && !ClassHelper.boolean_TYPE.equals(targetType) && !primTop && ClassHelper.getWrapper(targetType).equals(top)) { BytecodeHelper.doCastToPrimitive(mv, top, targetType); } else { top = stack.get(size - 1); if (!WideningCategories.implementsInterfaceOrSubclassOf(top, targetType)) { BytecodeHelper.doCast(mv, targetType); } } replace(targetType); }
/** * ensure last marked parameter on the stack is a primitive boolean if mark==stack size, we assume * an empty expression or statement. was used and we will use the value given in emptyDefault as * boolean if mark==stack.size()-1 the top element will be cast to boolean using Groovy truth. In * other cases we throw a GroovyBugError */ public void castToBool(int mark, boolean emptyDefault) { int size = stack.size(); MethodVisitor mv = controller.getMethodVisitor(); if (mark == size) { // no element, so use emptyDefault if (emptyDefault) { mv.visitIntInsn(BIPUSH, 1); } else { mv.visitIntInsn(BIPUSH, 0); } stack.add(null); } else if (mark == stack.size() - 1) { ClassNode last = stack.get(size - 1); // nothing to do in that case if (last == ClassHelper.boolean_TYPE) return; // not a primitive type, so call booleanUnbox if (!ClassHelper.isPrimitiveType(last)) { controller.getInvocationWriter().castNonPrimitiveToBool(last); } else { primitive2b(mv, last); } } else { throw new GroovyBugError( "operand stack contains " + stack.size() + " elements, but we expected only " + mark); } stack.set(mark, ClassHelper.boolean_TYPE); }
protected void evaluateBinaryExpression(String message, BinaryExpression binExp) { CompileStack compileStack = controller.getCompileStack(); Expression receiver = binExp.getLeftExpression(); Expression arguments = binExp.getRightExpression(); // ensure VariableArguments are read, not stored compileStack.pushLHS(false); controller.getInvocationWriter().makeSingleArgumentCall(receiver, message, arguments); compileStack.popLHS(); }
protected void assignToArray( Expression parent, Expression receiver, Expression index, Expression rhsValueLoader) { // let's replace this assignment to a subscript operator with a // method call // e.g. x[5] = 10 // -> (x, [], 5), =, 10 // -> methodCall(x, "putAt", [5, 10]) ArgumentListExpression ae = new ArgumentListExpression(index, rhsValueLoader); controller .getInvocationWriter() .makeCall( parent, receiver, new ConstantExpression("putAt"), ae, InvocationWriter.invokeMethod, false, false, false); controller.getOperandStack().pop(); // return value of assignment rhsValueLoader.visit(controller.getAcg()); }
@Override public void makeGroovyObjectGetPropertySite( final Expression receiver, final String methodName, final boolean safe, final boolean implicitThis) { TypeChooser typeChooser = controller.getTypeChooser(); ClassNode classNode = controller.getClassNode(); ClassNode receiverType = typeChooser.resolveType(receiver, classNode); if (receiver instanceof VariableExpression && ((VariableExpression) receiver).isThisExpression() && !controller.isInClosure()) { receiverType = classNode; } String property = methodName; if (implicitThis) { if (controller.getInvocationWriter() instanceof StaticInvocationWriter) { MethodCallExpression currentCall = ((StaticInvocationWriter) controller.getInvocationWriter()).getCurrentCall(); if (currentCall != null && currentCall.getNodeMetaData(StaticTypesMarker.IMPLICIT_RECEIVER) != null) { property = (String) currentCall.getNodeMetaData(StaticTypesMarker.IMPLICIT_RECEIVER); String[] props = property.split("\\."); BytecodeExpression thisLoader = new BytecodeExpression() { @Override public void visit(final MethodVisitor mv) { mv.visitVarInsn(ALOAD, 0); // load this } }; thisLoader.setType(CLOSURE_TYPE); Expression pexp = new PropertyExpression(thisLoader, new ConstantExpression(props[0]), safe); for (int i = 1, propsLength = props.length; i < propsLength; i++) { final String prop = props[i]; pexp.putNodeMetaData(StaticTypesMarker.INFERRED_TYPE, CLOSURE_TYPE); pexp = new PropertyExpression(pexp, prop); } pexp.visit(controller.getAcg()); return; } } } if (makeGetPropertyWithGetter(receiver, receiverType, property, safe, implicitThis)) return; if (makeGetField( receiver, receiverType, property, implicitThis, samePackages(receiverType.getPackageName(), classNode.getPackageName()))) return; MethodCallExpression call = new MethodCallExpression( receiver, "getProperty", new ArgumentListExpression(new ConstantExpression(property))); call.setImplicitThis(implicitThis); call.setSafe(safe); call.setMethodTarget(GROOVYOBJECT_GETPROPERTY_METHOD); call.visit(controller.getAcg()); return; }