| package org.apache.commons.ognl; |
| |
| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| import org.apache.commons.ognl.enhance.UnsupportedCompilationException; |
| |
| /** |
| * $Id$ |
| */ |
| public class ASTConst |
| extends SimpleNode |
| implements NodeType |
| { |
| |
| private Object value; |
| |
| private Class getterClass; |
| |
| public ASTConst( int id ) |
| { |
| super( id ); |
| } |
| |
| public ASTConst( OgnlParser p, int id ) |
| { |
| super( p, id ); |
| } |
| |
| /** |
| * Called from parser actions. |
| * @param value the value to set |
| */ |
| public void setValue( Object value ) |
| { |
| this.value = value; |
| } |
| |
| public Object getValue() |
| { |
| return value; |
| } |
| |
| protected Object getValueBody( OgnlContext context, Object source ) |
| throws OgnlException |
| { |
| return this.value; |
| } |
| |
| public boolean isNodeConstant( OgnlContext context ) |
| throws OgnlException |
| { |
| return true; |
| } |
| |
| public Class getGetterClass() |
| { |
| return getterClass; |
| } |
| |
| public Class getSetterClass() |
| { |
| return null; |
| } |
| |
| public String toGetSourceString( OgnlContext context, Object target ) |
| { |
| if ( value == null && parent != null && ExpressionNode.class.isInstance( parent ) ) |
| { |
| context.setCurrentType( null ); |
| return "null"; |
| } |
| if ( value == null ) |
| { |
| context.setCurrentType( null ); |
| return ""; |
| } |
| |
| getterClass = value.getClass(); |
| |
| Object retval = value; |
| if ( parent != null && ASTProperty.class.isInstance( parent ) ) |
| { |
| context.setCurrentObject( value ); |
| |
| return value.toString(); |
| } |
| if ( value != null && Number.class.isAssignableFrom( value.getClass() ) ) |
| { |
| context.setCurrentType( OgnlRuntime.getPrimitiveWrapperClass( value.getClass() ) ); |
| context.setCurrentObject( value ); |
| |
| return value.toString(); |
| } |
| if ( !( parent != null |
| && value != null |
| && NumericExpression.class.isAssignableFrom( parent.getClass() ) ) |
| && String.class.isAssignableFrom( value.getClass() ) ) |
| { |
| context.setCurrentType( String.class ); |
| |
| retval = '\"' + OgnlOps.getEscapeString( value.toString() ) + '\"'; |
| |
| context.setCurrentObject( retval.toString() ); |
| |
| return retval.toString(); |
| } |
| if ( Character.class.isInstance( value ) ) |
| { |
| Character val = (Character) value; |
| |
| context.setCurrentType( Character.class ); |
| |
| if ( Character.isLetterOrDigit( val.charValue() ) ) |
| { |
| retval = "'" + ( (Character) value ).charValue() + "'"; |
| } |
| else |
| { |
| retval = "'" + OgnlOps.getEscapedChar( ( (Character) value ).charValue() ) + "'"; |
| } |
| |
| context.setCurrentObject( retval ); |
| return retval.toString(); |
| } |
| |
| if ( Boolean.class.isAssignableFrom( value.getClass() ) ) |
| { |
| getterClass = Boolean.TYPE; |
| |
| context.setCurrentType( Boolean.TYPE ); |
| context.setCurrentObject( value ); |
| |
| return value.toString(); |
| } |
| |
| return value.toString(); |
| } |
| |
| public String toSetSourceString( OgnlContext context, Object target ) |
| { |
| if ( parent == null ) |
| { |
| throw new UnsupportedCompilationException( "Can't modify constant values." ); |
| } |
| |
| return toGetSourceString( context, target ); |
| } |
| |
| public <R, P> R accept( NodeVisitor<? extends R, ? super P> visitor, P data ) |
| throws OgnlException |
| { |
| return visitor.visit( this, data ); |
| } |
| } |