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| <FONT color="green">001</FONT> /*<a name="line.1"></a> |
| <FONT color="green">002</FONT> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a> |
| <FONT color="green">003</FONT> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a> |
| <FONT color="green">004</FONT> * distributed with this work for additional information<a name="line.4"></a> |
| <FONT color="green">005</FONT> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a> |
| <FONT color="green">006</FONT> * to you under the Apache License, Version 2.0 (the "License");<a name="line.6"></a> |
| <FONT color="green">007</FONT> * you may not use this file except in compliance with the License.<a name="line.7"></a> |
| <FONT color="green">008</FONT> * You may obtain a copy of the License at<a name="line.8"></a> |
| <FONT color="green">009</FONT> *<a name="line.9"></a> |
| <FONT color="green">010</FONT> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a> |
| <FONT color="green">011</FONT> *<a name="line.11"></a> |
| <FONT color="green">012</FONT> * Unless required by applicable law or agreed to in writing, software<a name="line.12"></a> |
| <FONT color="green">013</FONT> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.13"></a> |
| <FONT color="green">014</FONT> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.14"></a> |
| <FONT color="green">015</FONT> * See the License for the specific language governing permissions and<a name="line.15"></a> |
| <FONT color="green">016</FONT> * limitations under the License.<a name="line.16"></a> |
| <FONT color="green">017</FONT> */<a name="line.17"></a> |
| <FONT color="green">018</FONT> /*<a name="line.18"></a> |
| <FONT color="green">019</FONT> * $Id: DocumentCall.java 1225842 2011-12-30 15:14:35Z mrglavas $<a name="line.19"></a> |
| <FONT color="green">020</FONT> */<a name="line.20"></a> |
| <FONT color="green">021</FONT> <a name="line.21"></a> |
| <FONT color="green">022</FONT> package org.apache.xalan.xsltc.compiler;<a name="line.22"></a> |
| <FONT color="green">023</FONT> <a name="line.23"></a> |
| <FONT color="green">024</FONT> import java.util.Vector;<a name="line.24"></a> |
| <FONT color="green">025</FONT> <a name="line.25"></a> |
| <FONT color="green">026</FONT> import org.apache.bcel.generic.ConstantPoolGen;<a name="line.26"></a> |
| <FONT color="green">027</FONT> import org.apache.bcel.generic.GETFIELD;<a name="line.27"></a> |
| <FONT color="green">028</FONT> import org.apache.bcel.generic.INVOKESTATIC;<a name="line.28"></a> |
| <FONT color="green">029</FONT> import org.apache.bcel.generic.InstructionList;<a name="line.29"></a> |
| <FONT color="green">030</FONT> import org.apache.bcel.generic.PUSH;<a name="line.30"></a> |
| <FONT color="green">031</FONT> import org.apache.xalan.xsltc.compiler.util.ClassGenerator;<a name="line.31"></a> |
| <FONT color="green">032</FONT> import org.apache.xalan.xsltc.compiler.util.ErrorMsg;<a name="line.32"></a> |
| <FONT color="green">033</FONT> import org.apache.xalan.xsltc.compiler.util.MethodGenerator;<a name="line.33"></a> |
| <FONT color="green">034</FONT> import org.apache.xalan.xsltc.compiler.util.Type;<a name="line.34"></a> |
| <FONT color="green">035</FONT> import org.apache.xalan.xsltc.compiler.util.TypeCheckError;<a name="line.35"></a> |
| <FONT color="green">036</FONT> <a name="line.36"></a> |
| <FONT color="green">037</FONT> /**<a name="line.37"></a> |
| <FONT color="green">038</FONT> * @author Jacek Ambroziak<a name="line.38"></a> |
| <FONT color="green">039</FONT> * @author Morten Jorgensen<a name="line.39"></a> |
| <FONT color="green">040</FONT> */<a name="line.40"></a> |
| <FONT color="green">041</FONT> final class DocumentCall extends FunctionCall {<a name="line.41"></a> |
| <FONT color="green">042</FONT> <a name="line.42"></a> |
| <FONT color="green">043</FONT> private Expression _arg1 = null;<a name="line.43"></a> |
| <FONT color="green">044</FONT> private Expression _arg2 = null;<a name="line.44"></a> |
| <FONT color="green">045</FONT> private Type _arg1Type;<a name="line.45"></a> |
| <FONT color="green">046</FONT> <a name="line.46"></a> |
| <FONT color="green">047</FONT> /**<a name="line.47"></a> |
| <FONT color="green">048</FONT> * Default function call constructor<a name="line.48"></a> |
| <FONT color="green">049</FONT> */<a name="line.49"></a> |
| <FONT color="green">050</FONT> public DocumentCall(QName fname, Vector arguments) {<a name="line.50"></a> |
| <FONT color="green">051</FONT> super(fname, arguments);<a name="line.51"></a> |
| <FONT color="green">052</FONT> }<a name="line.52"></a> |
| <FONT color="green">053</FONT> <a name="line.53"></a> |
| <FONT color="green">054</FONT> /**<a name="line.54"></a> |
| <FONT color="green">055</FONT> * Type checks the arguments passed to the document() function. The first<a name="line.55"></a> |
| <FONT color="green">056</FONT> * argument can be any type (we must cast it to a string) and contains the<a name="line.56"></a> |
| <FONT color="green">057</FONT> * URI of the document<a name="line.57"></a> |
| <FONT color="green">058</FONT> */<a name="line.58"></a> |
| <FONT color="green">059</FONT> public Type typeCheck(SymbolTable stable) throws TypeCheckError {<a name="line.59"></a> |
| <FONT color="green">060</FONT> // At least one argument - two at most<a name="line.60"></a> |
| <FONT color="green">061</FONT> final int ac = argumentCount();<a name="line.61"></a> |
| <FONT color="green">062</FONT> if ((ac < 1) || (ac > 2)) {<a name="line.62"></a> |
| <FONT color="green">063</FONT> ErrorMsg msg = new ErrorMsg(ErrorMsg.ILLEGAL_ARG_ERR, this);<a name="line.63"></a> |
| <FONT color="green">064</FONT> throw new TypeCheckError(msg);<a name="line.64"></a> |
| <FONT color="green">065</FONT> }<a name="line.65"></a> |
| <FONT color="green">066</FONT> if (getStylesheet() == null) {<a name="line.66"></a> |
| <FONT color="green">067</FONT> ErrorMsg msg = new ErrorMsg(ErrorMsg.ILLEGAL_ARG_ERR, this);<a name="line.67"></a> |
| <FONT color="green">068</FONT> throw new TypeCheckError(msg);<a name="line.68"></a> |
| <FONT color="green">069</FONT> }<a name="line.69"></a> |
| <FONT color="green">070</FONT> <a name="line.70"></a> |
| <FONT color="green">071</FONT> // Parse the first argument <a name="line.71"></a> |
| <FONT color="green">072</FONT> _arg1 = argument(0);<a name="line.72"></a> |
| <FONT color="green">073</FONT> <a name="line.73"></a> |
| <FONT color="green">074</FONT> if (_arg1 == null) {// should not happened <a name="line.74"></a> |
| <FONT color="green">075</FONT> ErrorMsg msg = new ErrorMsg(ErrorMsg.DOCUMENT_ARG_ERR, this);<a name="line.75"></a> |
| <FONT color="green">076</FONT> throw new TypeCheckError(msg);<a name="line.76"></a> |
| <FONT color="green">077</FONT> }<a name="line.77"></a> |
| <FONT color="green">078</FONT> <a name="line.78"></a> |
| <FONT color="green">079</FONT> _arg1Type = _arg1.typeCheck(stable);<a name="line.79"></a> |
| <FONT color="green">080</FONT> if ((_arg1Type != Type.NodeSet) && (_arg1Type != Type.String)) {<a name="line.80"></a> |
| <FONT color="green">081</FONT> _arg1 = new CastExpr(_arg1, Type.String);<a name="line.81"></a> |
| <FONT color="green">082</FONT> }<a name="line.82"></a> |
| <FONT color="green">083</FONT> <a name="line.83"></a> |
| <FONT color="green">084</FONT> // Parse the second argument <a name="line.84"></a> |
| <FONT color="green">085</FONT> if (ac == 2) {<a name="line.85"></a> |
| <FONT color="green">086</FONT> _arg2 = argument(1);<a name="line.86"></a> |
| <FONT color="green">087</FONT> <a name="line.87"></a> |
| <FONT color="green">088</FONT> if (_arg2 == null) {// should not happened <a name="line.88"></a> |
| <FONT color="green">089</FONT> ErrorMsg msg = new ErrorMsg(ErrorMsg.DOCUMENT_ARG_ERR, this);<a name="line.89"></a> |
| <FONT color="green">090</FONT> throw new TypeCheckError(msg);<a name="line.90"></a> |
| <FONT color="green">091</FONT> }<a name="line.91"></a> |
| <FONT color="green">092</FONT> <a name="line.92"></a> |
| <FONT color="green">093</FONT> final Type arg2Type = _arg2.typeCheck(stable);<a name="line.93"></a> |
| <FONT color="green">094</FONT> <a name="line.94"></a> |
| <FONT color="green">095</FONT> if (arg2Type.identicalTo(Type.Node)) {<a name="line.95"></a> |
| <FONT color="green">096</FONT> _arg2 = new CastExpr(_arg2, Type.NodeSet);<a name="line.96"></a> |
| <FONT color="green">097</FONT> } else if (arg2Type.identicalTo(Type.NodeSet)) {<a name="line.97"></a> |
| <FONT color="green">098</FONT> // falls through<a name="line.98"></a> |
| <FONT color="green">099</FONT> } else {<a name="line.99"></a> |
| <FONT color="green">100</FONT> ErrorMsg msg = new ErrorMsg(ErrorMsg.DOCUMENT_ARG_ERR, this);<a name="line.100"></a> |
| <FONT color="green">101</FONT> throw new TypeCheckError(msg);<a name="line.101"></a> |
| <FONT color="green">102</FONT> }<a name="line.102"></a> |
| <FONT color="green">103</FONT> }<a name="line.103"></a> |
| <FONT color="green">104</FONT> <a name="line.104"></a> |
| <FONT color="green">105</FONT> return _type = Type.NodeSet;<a name="line.105"></a> |
| <FONT color="green">106</FONT> }<a name="line.106"></a> |
| <FONT color="green">107</FONT> <a name="line.107"></a> |
| <FONT color="green">108</FONT> /**<a name="line.108"></a> |
| <FONT color="green">109</FONT> * Translates the document() function call to a call to LoadDocument()'s<a name="line.109"></a> |
| <FONT color="green">110</FONT> * static method document().<a name="line.110"></a> |
| <FONT color="green">111</FONT> */<a name="line.111"></a> |
| <FONT color="green">112</FONT> public void translate(ClassGenerator classGen, MethodGenerator methodGen) {<a name="line.112"></a> |
| <FONT color="green">113</FONT> final ConstantPoolGen cpg = classGen.getConstantPool();<a name="line.113"></a> |
| <FONT color="green">114</FONT> final InstructionList il = methodGen.getInstructionList();<a name="line.114"></a> |
| <FONT color="green">115</FONT> final int ac = argumentCount();<a name="line.115"></a> |
| <FONT color="green">116</FONT> <a name="line.116"></a> |
| <FONT color="green">117</FONT> final int domField = cpg.addFieldref(classGen.getClassName(),<a name="line.117"></a> |
| <FONT color="green">118</FONT> DOM_FIELD,<a name="line.118"></a> |
| <FONT color="green">119</FONT> DOM_INTF_SIG);<a name="line.119"></a> |
| <FONT color="green">120</FONT> <a name="line.120"></a> |
| <FONT color="green">121</FONT> String docParamList = null;<a name="line.121"></a> |
| <FONT color="green">122</FONT> if (ac == 1) {<a name="line.122"></a> |
| <FONT color="green">123</FONT> // documentF(Object,String,AbstractTranslet,DOM)<a name="line.123"></a> |
| <FONT color="green">124</FONT> docParamList = "("+OBJECT_SIG+STRING_SIG+TRANSLET_SIG+DOM_INTF_SIG<a name="line.124"></a> |
| <FONT color="green">125</FONT> +")"+NODE_ITERATOR_SIG;<a name="line.125"></a> |
| <FONT color="green">126</FONT> } else { //ac == 2; ac < 1 or as >2 was tested in typeChec()<a name="line.126"></a> |
| <FONT color="green">127</FONT> // documentF(Object,DTMAxisIterator,String,AbstractTranslet,DOM)<a name="line.127"></a> |
| <FONT color="green">128</FONT> docParamList = "("+OBJECT_SIG+NODE_ITERATOR_SIG+STRING_SIG<a name="line.128"></a> |
| <FONT color="green">129</FONT> +TRANSLET_SIG+DOM_INTF_SIG+")"+NODE_ITERATOR_SIG; <a name="line.129"></a> |
| <FONT color="green">130</FONT> }<a name="line.130"></a> |
| <FONT color="green">131</FONT> final int docIdx = cpg.addMethodref(LOAD_DOCUMENT_CLASS, "documentF",<a name="line.131"></a> |
| <FONT color="green">132</FONT> docParamList);<a name="line.132"></a> |
| <FONT color="green">133</FONT> <a name="line.133"></a> |
| <FONT color="green">134</FONT> <a name="line.134"></a> |
| <FONT color="green">135</FONT> // The URI can be either a node-set or something else cast to a string<a name="line.135"></a> |
| <FONT color="green">136</FONT> _arg1.translate(classGen, methodGen);<a name="line.136"></a> |
| <FONT color="green">137</FONT> if (_arg1Type == Type.NodeSet) {<a name="line.137"></a> |
| <FONT color="green">138</FONT> _arg1.startIterator(classGen, methodGen);<a name="line.138"></a> |
| <FONT color="green">139</FONT> }<a name="line.139"></a> |
| <FONT color="green">140</FONT> <a name="line.140"></a> |
| <FONT color="green">141</FONT> if (ac == 2) {<a name="line.141"></a> |
| <FONT color="green">142</FONT> //_arg2 == null was tested in typeChec()<a name="line.142"></a> |
| <FONT color="green">143</FONT> _arg2.translate(classGen, methodGen);<a name="line.143"></a> |
| <FONT color="green">144</FONT> _arg2.startIterator(classGen, methodGen); <a name="line.144"></a> |
| <FONT color="green">145</FONT> }<a name="line.145"></a> |
| <FONT color="green">146</FONT> <a name="line.146"></a> |
| <FONT color="green">147</FONT> // Process the rest of the parameters on the stack<a name="line.147"></a> |
| <FONT color="green">148</FONT> il.append(new PUSH(cpg, getStylesheet().getSystemId()));<a name="line.148"></a> |
| <FONT color="green">149</FONT> il.append(classGen.loadTranslet());<a name="line.149"></a> |
| <FONT color="green">150</FONT> il.append(DUP);<a name="line.150"></a> |
| <FONT color="green">151</FONT> il.append(new GETFIELD(domField));<a name="line.151"></a> |
| <FONT color="green">152</FONT> il.append(new INVOKESTATIC(docIdx));<a name="line.152"></a> |
| <FONT color="green">153</FONT> }<a name="line.153"></a> |
| <FONT color="green">154</FONT> <a name="line.154"></a> |
| <FONT color="green">155</FONT> }<a name="line.155"></a> |
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| </PRE> |
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