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 $

        visitClassCodeContainer(statement);


        statement = node.getSetterBlock();
        visitClassCodeContainer(statement);


        Expression init = node.getInitialExpression();
        if (init != null) init.visit(this);
    }

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                paramField.setOriginType(ClassHelper.getWrapper(param.getOriginType()));
                paramField.setHolder(true);
                String methodName = Verifier.capitalize(paramName);


                // let's add a getter & setter
                Expression fieldExp = new FieldExpression(paramField);
                answer.addMethod(
                        "get" + methodName,
                        ACC_PUBLIC,
                        realType,
                        Parameter.EMPTY_ARRAY,

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        Label cond = new Label();
        mv.visitLabel(cond);
        // visit condition leave boolean on stack
        {
            Expression condExpr = (Expression) expressions.get(condIndex);
            int mark = controller.getOperandStack().getStackLength();
            condExpr.visit(controller.getAcg());
            controller.getOperandStack().castToBool(mark,true);
        }
        // jump if we don't want to continue
        // note: ifeq tests for ==0, a boolean is 0 if it is false
        controller.getOperandStack().jump(IFEQ, breakLabel);

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        if (expression instanceof VariableExpression) {
            VariableExpression ve = (VariableExpression) expression;
            v = ve.getAccessedVariable();
        } else {
          PropertyExpression propExp = ((PropertyExpression) expression);
          Expression objectExpression = propExp.getObjectExpression();
          if(objectExpression instanceof VariableExpression) {
            VariableExpression varExp = (VariableExpression) objectExpression;
            if(varExp.isThisExpression()) {
              v = currentClass.getDeclaredField(propExp.getPropertyAsString());
            }

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        super.visitCatchStatement(cs);
    }


    public void visitMethodCallExpression(MethodCallExpression mce) {
        super.visitMethodCallExpression(mce);
        Expression aexp = mce.getArguments();
        if (aexp instanceof TupleExpression) {
            TupleExpression arguments = (TupleExpression) aexp;
            for (Expression e : arguments.getExpressions()) {
                checkForInvalidDeclaration(e);
            }

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        if (statementList.isEmpty()) return null;


        final Statement statement = statementList.get(0);
        if (!(statement instanceof ExpressionStatement)) return null;


        Expression expression = ((ExpressionStatement) statement).getExpression();
        if (!(expression instanceof ConstructorCallExpression)) return null;
        ConstructorCallExpression cce = (ConstructorCallExpression) expression;
        if (cce.isSpecialCall()) return cce;
        return null;
    }

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    }


    @Override
    public void visitProperty(PropertyNode node) {
        final FieldNode field = node.getField();
        final Expression init = field.getInitialExpression();
        field.setInitialValueExpression(null);
        super.visitProperty(node);
        field.setInitialValueExpression(init);
    }

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        // if constructor call is not in static context, return
        if (isInStaticContext) {
            // constructor call is in static context and the inner class is non-static - 1st arg is supposed to be
            // passed as enclosing "this" instance
            //
            Expression args = call.getArguments();
            if (args instanceof TupleExpression && ((TupleExpression) args).getExpressions().isEmpty()) {
                addError("No enclosing instance passed in constructor call of a non-static inner class", call);
            }
            return;
        }


        // calculate outer class which we need for this$0
        ClassNode parent = classNode;
        int level = 0;
        for (; parent != null && parent != cn.getOuterClass(); parent = parent.getOuterClass()) {
            level++;
        }


        // if constructor call is not in outer class, don't pass 'this' implicitly. Return.
        if (parent == null) return;


        //add this parameter to node
        Expression argsExp = call.getArguments();
        if (argsExp instanceof TupleExpression) {
            TupleExpression argsListExp = (TupleExpression) argsExp;
            Expression this0 = VariableExpression.THIS_EXPRESSION;
            for (int i = 0; i != level; ++i)
                this0 = new PropertyExpression(this0, "this$0");
            argsListExp.getExpressions().add(0, this0);
        }
    }

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    public Expression getMember(String name) {
        return members.get(name);
    }


    public void addMember(String name, Expression value) {
        Expression oldValue = members.get(name);
        if (oldValue == null) {
            members.put(name, value);
        }
        else {
            throw new GroovyBugError(String.format("Annotation member %s has already been added", name));

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            return new ReturnStatement(ConstantExpression.NULL);
        }


        if (statement instanceof ExpressionStatement) {
            ExpressionStatement expStmt = (ExpressionStatement) statement;
            Expression expr = expStmt.getExpression();
            ReturnStatement ret = new ReturnStatement(expr);
            ret.setSourcePosition(expr);
            ret.setStatementLabel(statement.getStatementLabel());
            return ret;
        }

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