Examples of org.codehaus.groovy.ast.expr.Expression

org.codehaus.groovy.ast.expr.Expression
Represents a base class for expressions which evaluate as an object @author James Strachan @version $Revision: 17114 $

    }
    
    private void visitExpressionOrStatement(Object o) {
        if (o == EmptyExpression.INSTANCE) return;
        if (o instanceof Expression) {
            Expression expr = (Expression) o;
            int mark = controller.getOperandStack().getStackLength();
            expr.visit(controller.getAcg());
            controller.getOperandStack().popDownTo(mark);
        } else {
            ((Statement) o).visit(controller.getAcg());
        }
    }

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        controller.getCompileStack().pushLoop(loop.getStatementLabel());
        Label continueLabel = controller.getCompileStack().getContinueLabel();
        Label breakLabel = controller.getCompileStack().getBreakLabel();


        mv.visitLabel(continueLabel);
        Expression bool = loop.getBooleanExpression();
        boolean boolHandled = false;
        if (bool instanceof ConstantExpression) {
            ConstantExpression constant = (ConstantExpression) bool;
            if (constant.getValue()==Boolean.TRUE) {
                boolHandled = true;
                // do nothing
            } else if (constant.getValue()==Boolean.FALSE) {
                boolHandled = true;
                mv.visitJumpInsn(GOTO, breakLabel);
            }
        }


        if(!boolHandled) {
            bool.visit(controller.getAcg());
            controller.getOperandStack().jump(IFEQ, breakLabel);
        }


        loop.getLoopBlock().visit(controller.getAcg());

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            controller.getCompileStack().applyBlockRecorder();
            mv.visitInsn(RETURN);
            return;
        }


        Expression expression = statement.getExpression();
        expression.visit(controller.getAcg());
        
        if (controller.getCompileStack().hasBlockRecorder()) {
            ClassNode type = operandStack.getTopOperand();
            // value is always saved in boxed form, so no need to have a special load routine here
            int returnValueIdx = controller.getCompileStack().defineTemporaryVariable("returnValue", type, true);

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    public void writeExpressionStatement(ExpressionStatement statement) {
        controller.getAcg().onLineNumber(statement, "visitExpressionStatement: " + statement.getExpression().getClass().getName());
        writeStatementLabel(statement);


        Expression expression = statement.getExpression();


        int mark = controller.getOperandStack().getStackLength();
        expression.visit(controller.getAcg());
        controller.getOperandStack().popDownTo(mark);
    }

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    }


    private void makeInvokeMethodCall(MethodCallExpression call, boolean useSuper, MethodCallerMultiAdapter adapter) {
        // receiver
        // we operate on GroovyObject if possible
        Expression objectExpression = call.getObjectExpression();
        // message name
        Expression messageName = new CastExpression(ClassHelper.STRING_TYPE, call.getMethod());
        if (useSuper) {
            ClassNode classNode = controller.isInClosure() ? controller.getOutermostClass() : controller.getClassNode(); // GROOVY-4035 
            ClassNode superClass = classNode.getSuperClass();
            makeCall(call, new ClassExpression(superClass),
                    objectExpression, messageName,

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            }
        } else if (numberOfArguments > 0) {
            operandsToRemove += numberOfArguments;
            TupleExpression te = (TupleExpression) arguments;
            for (int i = 0; i < numberOfArguments; i++) {
                Expression argument = te.getExpression(i);
                argument.visit(acg);
                operandStack.box();
                if (argument instanceof CastExpression) acg.loadWrapper(argument);
            }
        }

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    private String getMethodName(Expression message) {
        String methodName = null;
        if (message instanceof CastExpression) {
            CastExpression msg = (CastExpression) message;
            if (msg.getType() == ClassHelper.STRING_TYPE) {
                final Expression methodExpr = msg.getExpression();
                if (methodExpr instanceof ConstantExpression)
                  methodName = methodExpr.getText();
            }
        }


        if (methodName == null && message instanceof ConstantExpression) {
            ConstantExpression constantExpression = (ConstantExpression) message;

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        if (!call.isImplicitThis()) return false;
        if (!AsmClassGenerator.isThisExpression(call.getObjectExpression())) return false;
        FieldNode field = classNode.getDeclaredField(methodName);
        if (field == null) return false;
        if (isStaticInvocation(call) && !field.isStatic()) return false;
        Expression arguments = call.getArguments();
        return ! classNode.hasPossibleMethod(methodName, arguments);
    }

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        if (controller.isStaticMethod()) return true;
        return controller.isStaticContext() && !call.isImplicitThis();
    }
    
    private static boolean usesSuper(MethodCallExpression call) {
        Expression expression = call.getObjectExpression();
        if (expression instanceof VariableExpression) {
            VariableExpression varExp = (VariableExpression) expression;
            String variable = varExp.getName();
            return variable.equals("super");
        }

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         if (mce.getObjectExpression() instanceof PropertyExpression)
         {
            PropertyExpression mce_pe = (PropertyExpression)mce.getObjectExpression();


            //
            Expression expr = bilto(mce_pe);
            if (expr != null)
            {
               mce.setObjectExpression(expr);
            }
         }

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