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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: WithParam.java 468650 2006-10-28 07:03:30Z minchau $<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 org.apache.bcel.generic.ConstantPoolGen;<a name="line.24"></a> |
| <FONT color="green">025</FONT> import org.apache.bcel.generic.INVOKEVIRTUAL;<a name="line.25"></a> |
| <FONT color="green">026</FONT> import org.apache.bcel.generic.InstructionList;<a name="line.26"></a> |
| <FONT color="green">027</FONT> import org.apache.bcel.generic.PUSH;<a name="line.27"></a> |
| <FONT color="green">028</FONT> import org.apache.xalan.xsltc.compiler.util.ClassGenerator;<a name="line.28"></a> |
| <FONT color="green">029</FONT> import org.apache.xalan.xsltc.compiler.util.ErrorMsg;<a name="line.29"></a> |
| <FONT color="green">030</FONT> import org.apache.xalan.xsltc.compiler.util.MethodGenerator;<a name="line.30"></a> |
| <FONT color="green">031</FONT> import org.apache.xalan.xsltc.compiler.util.ReferenceType;<a name="line.31"></a> |
| <FONT color="green">032</FONT> import org.apache.xalan.xsltc.compiler.util.Type;<a name="line.32"></a> |
| <FONT color="green">033</FONT> import org.apache.xalan.xsltc.compiler.util.TypeCheckError;<a name="line.33"></a> |
| <FONT color="green">034</FONT> import org.apache.xalan.xsltc.compiler.util.Util;<a name="line.34"></a> |
| <FONT color="green">035</FONT> import org.apache.xml.utils.XML11Char;<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 Santiago Pericas-Geertsen<a name="line.39"></a> |
| <FONT color="green">040</FONT> * @author Morten Jorgensen<a name="line.40"></a> |
| <FONT color="green">041</FONT> * @author John Howard <JohnH@schemasoft.com><a name="line.41"></a> |
| <FONT color="green">042</FONT> */<a name="line.42"></a> |
| <FONT color="green">043</FONT> final class WithParam extends Instruction {<a name="line.43"></a> |
| <FONT color="green">044</FONT> <a name="line.44"></a> |
| <FONT color="green">045</FONT> /**<a name="line.45"></a> |
| <FONT color="green">046</FONT> * Parameter's name.<a name="line.46"></a> |
| <FONT color="green">047</FONT> */<a name="line.47"></a> |
| <FONT color="green">048</FONT> private QName _name;<a name="line.48"></a> |
| <FONT color="green">049</FONT> <a name="line.49"></a> |
| <FONT color="green">050</FONT> /**<a name="line.50"></a> |
| <FONT color="green">051</FONT> * The escaped qname of the with-param.<a name="line.51"></a> |
| <FONT color="green">052</FONT> */<a name="line.52"></a> |
| <FONT color="green">053</FONT> protected String _escapedName;<a name="line.53"></a> |
| <FONT color="green">054</FONT> <a name="line.54"></a> |
| <FONT color="green">055</FONT> /**<a name="line.55"></a> |
| <FONT color="green">056</FONT> * Parameter's default value.<a name="line.56"></a> |
| <FONT color="green">057</FONT> */<a name="line.57"></a> |
| <FONT color="green">058</FONT> private Expression _select;<a name="line.58"></a> |
| <FONT color="green">059</FONT> <a name="line.59"></a> |
| <FONT color="green">060</FONT> /**<a name="line.60"></a> |
| <FONT color="green">061</FONT> * %OPT% This is set to true when the WithParam is used in a CallTemplate<a name="line.61"></a> |
| <FONT color="green">062</FONT> * for a simple named template. If this is true, the parameters are <a name="line.62"></a> |
| <FONT color="green">063</FONT> * passed to the named template through method arguments rather than<a name="line.63"></a> |
| <FONT color="green">064</FONT> * using the expensive Translet.addParameter() call.<a name="line.64"></a> |
| <FONT color="green">065</FONT> */<a name="line.65"></a> |
| <FONT color="green">066</FONT> private boolean _doParameterOptimization = false;<a name="line.66"></a> |
| <FONT color="green">067</FONT> <a name="line.67"></a> |
| <FONT color="green">068</FONT> /**<a name="line.68"></a> |
| <FONT color="green">069</FONT> * Displays the contents of this element<a name="line.69"></a> |
| <FONT color="green">070</FONT> */<a name="line.70"></a> |
| <FONT color="green">071</FONT> public void display(int indent) {<a name="line.71"></a> |
| <FONT color="green">072</FONT> indent(indent);<a name="line.72"></a> |
| <FONT color="green">073</FONT> Util.println("with-param " + _name);<a name="line.73"></a> |
| <FONT color="green">074</FONT> if (_select != null) {<a name="line.74"></a> |
| <FONT color="green">075</FONT> indent(indent + IndentIncrement);<a name="line.75"></a> |
| <FONT color="green">076</FONT> Util.println("select " + _select.toString());<a name="line.76"></a> |
| <FONT color="green">077</FONT> }<a name="line.77"></a> |
| <FONT color="green">078</FONT> displayContents(indent + IndentIncrement);<a name="line.78"></a> |
| <FONT color="green">079</FONT> }<a name="line.79"></a> |
| <FONT color="green">080</FONT> <a name="line.80"></a> |
| <FONT color="green">081</FONT> /**<a name="line.81"></a> |
| <FONT color="green">082</FONT> * Returns the escaped qname of the parameter<a name="line.82"></a> |
| <FONT color="green">083</FONT> */<a name="line.83"></a> |
| <FONT color="green">084</FONT> public String getEscapedName() {<a name="line.84"></a> |
| <FONT color="green">085</FONT> return _escapedName;<a name="line.85"></a> |
| <FONT color="green">086</FONT> } <a name="line.86"></a> |
| <FONT color="green">087</FONT> <a name="line.87"></a> |
| <FONT color="green">088</FONT> /**<a name="line.88"></a> |
| <FONT color="green">089</FONT> * Return the name of this WithParam.<a name="line.89"></a> |
| <FONT color="green">090</FONT> */<a name="line.90"></a> |
| <FONT color="green">091</FONT> public QName getName() {<a name="line.91"></a> |
| <FONT color="green">092</FONT> return _name; <a name="line.92"></a> |
| <FONT color="green">093</FONT> }<a name="line.93"></a> |
| <FONT color="green">094</FONT> <a name="line.94"></a> |
| <FONT color="green">095</FONT> /**<a name="line.95"></a> |
| <FONT color="green">096</FONT> * Set the name of the variable or paremeter. Escape all special chars.<a name="line.96"></a> |
| <FONT color="green">097</FONT> */<a name="line.97"></a> |
| <FONT color="green">098</FONT> public void setName(QName name) {<a name="line.98"></a> |
| <FONT color="green">099</FONT> _name = name;<a name="line.99"></a> |
| <FONT color="green">100</FONT> _escapedName = Util.escape(name.getStringRep());<a name="line.100"></a> |
| <FONT color="green">101</FONT> } <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> * Set the do parameter optimization flag<a name="line.104"></a> |
| <FONT color="green">105</FONT> */<a name="line.105"></a> |
| <FONT color="green">106</FONT> public void setDoParameterOptimization(boolean flag) {<a name="line.106"></a> |
| <FONT color="green">107</FONT> _doParameterOptimization = flag;<a name="line.107"></a> |
| <FONT color="green">108</FONT> }<a name="line.108"></a> |
| <FONT color="green">109</FONT> <a name="line.109"></a> |
| <FONT color="green">110</FONT> /**<a name="line.110"></a> |
| <FONT color="green">111</FONT> * The contents of a <xsl:with-param> elements are either in the element's<a name="line.111"></a> |
| <FONT color="green">112</FONT> * 'select' attribute (this has precedence) or in the element body.<a name="line.112"></a> |
| <FONT color="green">113</FONT> */<a name="line.113"></a> |
| <FONT color="green">114</FONT> public void parseContents(Parser parser) {<a name="line.114"></a> |
| <FONT color="green">115</FONT> final String name = getAttribute("name");<a name="line.115"></a> |
| <FONT color="green">116</FONT> if (name.length() > 0) {<a name="line.116"></a> |
| <FONT color="green">117</FONT> if (!XML11Char.isXML11ValidQName(name)) {<a name="line.117"></a> |
| <FONT color="green">118</FONT> ErrorMsg err = new ErrorMsg(ErrorMsg.INVALID_QNAME_ERR, name,<a name="line.118"></a> |
| <FONT color="green">119</FONT> this);<a name="line.119"></a> |
| <FONT color="green">120</FONT> parser.reportError(Constants.ERROR, err);<a name="line.120"></a> |
| <FONT color="green">121</FONT> }<a name="line.121"></a> |
| <FONT color="green">122</FONT> setName(parser.getQNameIgnoreDefaultNs(name));<a name="line.122"></a> |
| <FONT color="green">123</FONT> }<a name="line.123"></a> |
| <FONT color="green">124</FONT> else {<a name="line.124"></a> |
| <FONT color="green">125</FONT> reportError(this, parser, ErrorMsg.REQUIRED_ATTR_ERR, "name");<a name="line.125"></a> |
| <FONT color="green">126</FONT> }<a name="line.126"></a> |
| <FONT color="green">127</FONT> <a name="line.127"></a> |
| <FONT color="green">128</FONT> final String select = getAttribute("select");<a name="line.128"></a> |
| <FONT color="green">129</FONT> if (select.length() > 0) {<a name="line.129"></a> |
| <FONT color="green">130</FONT> _select = parser.parseExpression(this, "select", null);<a name="line.130"></a> |
| <FONT color="green">131</FONT> }<a name="line.131"></a> |
| <FONT color="green">132</FONT> <a name="line.132"></a> |
| <FONT color="green">133</FONT> parseChildren(parser);<a name="line.133"></a> |
| <FONT color="green">134</FONT> }<a name="line.134"></a> |
| <FONT color="green">135</FONT> <a name="line.135"></a> |
| <FONT color="green">136</FONT> /**<a name="line.136"></a> |
| <FONT color="green">137</FONT> * Type-check either the select attribute or the element body, depending<a name="line.137"></a> |
| <FONT color="green">138</FONT> * on which is in use.<a name="line.138"></a> |
| <FONT color="green">139</FONT> */<a name="line.139"></a> |
| <FONT color="green">140</FONT> public Type typeCheck(SymbolTable stable) throws TypeCheckError {<a name="line.140"></a> |
| <FONT color="green">141</FONT> if (_select != null) {<a name="line.141"></a> |
| <FONT color="green">142</FONT> final Type tselect = _select.typeCheck(stable);<a name="line.142"></a> |
| <FONT color="green">143</FONT> if (tselect instanceof ReferenceType == false) {<a name="line.143"></a> |
| <FONT color="green">144</FONT> _select = new CastExpr(_select, Type.Reference);<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> else {<a name="line.147"></a> |
| <FONT color="green">148</FONT> typeCheckContents(stable);<a name="line.148"></a> |
| <FONT color="green">149</FONT> }<a name="line.149"></a> |
| <FONT color="green">150</FONT> return Type.Void;<a name="line.150"></a> |
| <FONT color="green">151</FONT> }<a name="line.151"></a> |
| <FONT color="green">152</FONT> <a name="line.152"></a> |
| <FONT color="green">153</FONT> /**<a name="line.153"></a> |
| <FONT color="green">154</FONT> * Compile the value of the parameter, which is either in an expression in<a name="line.154"></a> |
| <FONT color="green">155</FONT> * a 'select' attribute, or in the with-param element's body<a name="line.155"></a> |
| <FONT color="green">156</FONT> */<a name="line.156"></a> |
| <FONT color="green">157</FONT> public void translateValue(ClassGenerator classGen,<a name="line.157"></a> |
| <FONT color="green">158</FONT> MethodGenerator methodGen) {<a name="line.158"></a> |
| <FONT color="green">159</FONT> // Compile expression is 'select' attribute if present<a name="line.159"></a> |
| <FONT color="green">160</FONT> if (_select != null) {<a name="line.160"></a> |
| <FONT color="green">161</FONT> _select.translate(classGen, methodGen);<a name="line.161"></a> |
| <FONT color="green">162</FONT> _select.startIterator(classGen, methodGen);<a name="line.162"></a> |
| <FONT color="green">163</FONT> }<a name="line.163"></a> |
| <FONT color="green">164</FONT> // If not, compile result tree from parameter body if present.<a name="line.164"></a> |
| <FONT color="green">165</FONT> else if (hasContents()) {<a name="line.165"></a> |
| <FONT color="green">166</FONT> compileResultTree(classGen, methodGen);<a name="line.166"></a> |
| <FONT color="green">167</FONT> }<a name="line.167"></a> |
| <FONT color="green">168</FONT> // If neither are present then store empty string in parameter slot<a name="line.168"></a> |
| <FONT color="green">169</FONT> else {<a name="line.169"></a> |
| <FONT color="green">170</FONT> final ConstantPoolGen cpg = classGen.getConstantPool();<a name="line.170"></a> |
| <FONT color="green">171</FONT> final InstructionList il = methodGen.getInstructionList();<a name="line.171"></a> |
| <FONT color="green">172</FONT> il.append(new PUSH(cpg, Constants.EMPTYSTRING));<a name="line.172"></a> |
| <FONT color="green">173</FONT> }<a name="line.173"></a> |
| <FONT color="green">174</FONT> }<a name="line.174"></a> |
| <FONT color="green">175</FONT> <a name="line.175"></a> |
| <FONT color="green">176</FONT> /**<a name="line.176"></a> |
| <FONT color="green">177</FONT> * This code generates a sequence of bytecodes that call the<a name="line.177"></a> |
| <FONT color="green">178</FONT> * addParameter() method in AbstractTranslet. The method call will add<a name="line.178"></a> |
| <FONT color="green">179</FONT> * (or update) the parameter frame with the new parameter value.<a name="line.179"></a> |
| <FONT color="green">180</FONT> */<a name="line.180"></a> |
| <FONT color="green">181</FONT> public void translate(ClassGenerator classGen, MethodGenerator methodGen) {<a name="line.181"></a> |
| <FONT color="green">182</FONT> final ConstantPoolGen cpg = classGen.getConstantPool();<a name="line.182"></a> |
| <FONT color="green">183</FONT> final InstructionList il = methodGen.getInstructionList();<a name="line.183"></a> |
| <FONT color="green">184</FONT> <a name="line.184"></a> |
| <FONT color="green">185</FONT> // Translate the value and put it on the stack<a name="line.185"></a> |
| <FONT color="green">186</FONT> if (_doParameterOptimization) {<a name="line.186"></a> |
| <FONT color="green">187</FONT> translateValue(classGen, methodGen);<a name="line.187"></a> |
| <FONT color="green">188</FONT> return;<a name="line.188"></a> |
| <FONT color="green">189</FONT> }<a name="line.189"></a> |
| <FONT color="green">190</FONT> <a name="line.190"></a> |
| <FONT color="green">191</FONT> // Make name acceptable for use as field name in class<a name="line.191"></a> |
| <FONT color="green">192</FONT> String name = Util.escape(getEscapedName());<a name="line.192"></a> |
| <FONT color="green">193</FONT> <a name="line.193"></a> |
| <FONT color="green">194</FONT> // Load reference to the translet (method is in AbstractTranslet)<a name="line.194"></a> |
| <FONT color="green">195</FONT> il.append(classGen.loadTranslet());<a name="line.195"></a> |
| <FONT color="green">196</FONT> <a name="line.196"></a> |
| <FONT color="green">197</FONT> // Load the name of the parameter<a name="line.197"></a> |
| <FONT color="green">198</FONT> il.append(new PUSH(cpg, name)); // TODO: namespace ?<a name="line.198"></a> |
| <FONT color="green">199</FONT> // Generete the value of the parameter (use value in 'select' by def.)<a name="line.199"></a> |
| <FONT color="green">200</FONT> translateValue(classGen, methodGen);<a name="line.200"></a> |
| <FONT color="green">201</FONT> // Mark this parameter value is not being the default value<a name="line.201"></a> |
| <FONT color="green">202</FONT> il.append(new PUSH(cpg, false));<a name="line.202"></a> |
| <FONT color="green">203</FONT> // Pass the parameter to the template<a name="line.203"></a> |
| <FONT color="green">204</FONT> il.append(new INVOKEVIRTUAL(cpg.addMethodref(TRANSLET_CLASS,<a name="line.204"></a> |
| <FONT color="green">205</FONT> ADD_PARAMETER,<a name="line.205"></a> |
| <FONT color="green">206</FONT> ADD_PARAMETER_SIG)));<a name="line.206"></a> |
| <FONT color="green">207</FONT> il.append(POP); // cleanup stack<a name="line.207"></a> |
| <FONT color="green">208</FONT> }<a name="line.208"></a> |
| <FONT color="green">209</FONT> }<a name="line.209"></a> |
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