001/** 002 * 003 * Copyright (c) 2014, the Railo Company Ltd. All rights reserved. 004 * 005 * This library is free software; you can redistribute it and/or 006 * modify it under the terms of the GNU Lesser General Public 007 * License as published by the Free Software Foundation; either 008 * version 2.1 of the License, or (at your option) any later version. 009 * 010 * This library is distributed in the hope that it will be useful, 011 * but WITHOUT ANY WARRANTY; without even the implied warranty of 012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 013 * Lesser General Public License for more details. 014 * 015 * You should have received a copy of the GNU Lesser General Public 016 * License along with this library. If not, see <http://www.gnu.org/licenses/>. 017 * 018 **/ 019package lucee.runtime.interpreter.ref.var; 020 021import lucee.runtime.PageContext; 022import lucee.runtime.exp.PageException; 023import lucee.runtime.interpreter.InterpreterException; 024import lucee.runtime.interpreter.ref.Ref; 025import lucee.runtime.interpreter.ref.RefSupport; 026import lucee.runtime.interpreter.ref.Set; 027import lucee.runtime.interpreter.ref.literal.LString; 028import lucee.runtime.op.Caster; 029import lucee.runtime.type.Query; 030import lucee.runtime.type.StructImpl; 031 032/** 033 * 034 */ 035public final class Variable extends RefSupport implements Set { 036 037 private String key; 038 private Ref parent; 039 private Ref refKey; 040 private boolean limited; 041 042 /** 043 * @param pc 044 * @param parent 045 * @param key 046 */ 047 public Variable( Ref parent,String key, boolean limited) { 048 this.parent=parent; 049 this.key=key; 050 this.limited=limited; 051 } 052 053 /** 054 * @param pc 055 * @param parent 056 * @param refKey 057 */ 058 public Variable(Ref parent,Ref refKey, boolean limited) { 059 this.parent=parent; 060 this.refKey=refKey; 061 this.limited=limited; 062 } 063 064 @Override 065 public Object getValue(PageContext pc) throws PageException { 066 if(limited) throw new InterpreterException("invalid syntax, variables are not supported in a json string."); 067 return pc.get(parent.getCollection(pc),getKeyAsString(pc)); 068 } 069 070 @Override 071 public Object touchValue(PageContext pc) throws PageException { 072 if(limited) throw new InterpreterException("invalid syntax, variables are not supported in a json string."); 073 Object p = parent.touchValue(pc); 074 if(p instanceof Query) { 075 Object o= ((Query)p).getColumn(getKeyAsString(pc),null); 076 if(o!=null) return o; 077 return setValue(pc,new StructImpl()); 078 } 079 080 return pc.touch(p,getKeyAsString(pc)); 081 } 082 083 @Override 084 public Object getCollection(PageContext pc) throws PageException { 085 if(limited) throw new InterpreterException("invalid syntax, variables are not supported in a json string."); 086 Object p = parent.getValue(pc); 087 if(p instanceof Query) { 088 return ((Query)p).getColumn(getKeyAsString(pc)); 089 } 090 return pc.get(p,getKeyAsString(pc)); 091 } 092 093 @Override 094 public Object setValue(PageContext pc,Object obj) throws PageException { 095 if(limited) throw new InterpreterException("invalid syntax, variables are not supported in a json string."); 096 return pc.set(parent.touchValue(pc),getKeyAsString(pc),obj); 097 } 098 099 @Override 100 public String getTypeName() { 101 return "variable"; 102 } 103 104 @Override 105 public Ref getKey(PageContext pc) throws PageException { 106 if(key==null)return refKey; 107 return new LString(key); 108 } 109 110 @Override 111 public String getKeyAsString(PageContext pc) throws PageException { 112 if(key==null)key=Caster.toString(refKey.getValue(pc)); 113 return key; 114 } 115 116 @Override 117 public Ref getParent(PageContext pc) throws PageException { 118 return parent; 119 } 120}