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.transformer.bytecode.statement.tag; 020 021import lucee.transformer.bytecode.BytecodeContext; 022import lucee.transformer.bytecode.BytecodeException; 023import lucee.transformer.bytecode.Position; 024import lucee.transformer.bytecode.cast.CastInt; 025import lucee.transformer.bytecode.expression.Expression; 026import lucee.transformer.bytecode.util.Types; 027import lucee.transformer.cfml.evaluator.impl.Argument; 028 029import org.objectweb.asm.Opcodes; 030import org.objectweb.asm.Type; 031import org.objectweb.asm.commons.GeneratorAdapter; 032import org.objectweb.asm.commons.Method; 033 034public final class TagParam extends TagBaseNoFinal { 035 036 // void param(String type, String name, Object defaultValue) 037 private static final Method PARAM_TYPE_NAME_DEFAULTVALUE = new Method( 038 "param", 039 Types.VOID, 040 new Type[]{Types.STRING,Types.STRING,Types.OBJECT} 041 ); 042 private static final Method PARAM_TYPE_NAME_DEFAULTVALUE_REGEX = new Method( 043 "param", 044 Types.VOID, 045 new Type[]{Types.STRING,Types.STRING,Types.OBJECT,Types.STRING} 046 ); 047 private static final Method PARAM_TYPE_NAME_DEFAULTVALUE_MIN_MAX = new Method( 048 "param", 049 Types.VOID, 050 new Type[]{Types.STRING,Types.STRING,Types.OBJECT,Types.DOUBLE_VALUE,Types.DOUBLE_VALUE} 051 ); 052 private static final Method PARAM_TYPE_NAME_DEFAULTVALUE_MAXLENGTH = new Method( 053 "param", 054 Types.VOID, 055 new Type[]{Types.STRING,Types.STRING,Types.OBJECT,Types.INT_VALUE} 056 ); 057 058 public TagParam(Position start,Position end) { 059 super(start,end); 060 } 061 062 /** 063 * 064 * @see lucee.transformer.bytecode.statement.tag.TagBase#_writeOut(org.objectweb.asm.commons.GeneratorAdapter) 065 */ 066 public void _writeOut(BytecodeContext bc) throws BytecodeException { 067 GeneratorAdapter adapter = bc.getAdapter(); 068 //PageContextImpl pc=null; 069 //pc.param("", "", ""); 070 071 Argument.checkDefaultValue(this); 072 073 // pc 074 adapter.loadArg(0); 075 076 // type 077 Attribute attrType = getAttribute("type"); 078 if(attrType!=null) { 079 attrType.getValue().writeOut(bc, Expression.MODE_REF); 080 } 081 else adapter.push("any"); 082 083 // name 084 getAttribute("name").getValue().writeOut(bc, Expression.MODE_REF); 085 086 // default 087 Attribute attrDefault = getAttribute("default"); 088 if(attrDefault!=null) { 089 attrDefault.getValue().writeOut(bc, Expression.MODE_REF); 090 } 091 else adapter.visitInsn(Opcodes.ACONST_NULL); 092 093 Attribute attrMin = getAttribute("min"); 094 Attribute attrMax = getAttribute("max"); 095 Attribute attrPattern = getAttribute("pattern"); 096 Attribute maxLength = getAttribute("maxLength"); 097 098 if(attrMin!=null || attrMax!=null) { 099 // min 100 if(attrMin!=null)attrMin.getValue().writeOut(bc, Expression.MODE_VALUE); 101 else { 102 adapter.visitLdcInsn(new Double("NaN")); 103 } 104 // max 105 if(attrMax!=null)attrMax.getValue().writeOut(bc, Expression.MODE_VALUE); 106 else { 107 adapter.visitLdcInsn(new Double("NaN")); 108 } 109 adapter.invokeVirtual(Types.PAGE_CONTEXT, PARAM_TYPE_NAME_DEFAULTVALUE_MIN_MAX); 110 } 111 else if(attrPattern!=null) { 112 attrPattern.getValue().writeOut(bc, Expression.MODE_REF); 113 adapter.invokeVirtual(Types.PAGE_CONTEXT, PARAM_TYPE_NAME_DEFAULTVALUE_REGEX); 114 } 115 else if(maxLength!=null) { 116 CastInt.toExprInt(maxLength.getValue()).writeOut(bc, Expression.MODE_VALUE); 117 adapter.invokeVirtual(Types.PAGE_CONTEXT, PARAM_TYPE_NAME_DEFAULTVALUE_MAXLENGTH); 118 } 119 else adapter.invokeVirtual(Types.PAGE_CONTEXT, PARAM_TYPE_NAME_DEFAULTVALUE); 120 121 } 122 123}