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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: StringType.java 468649 2006-10-28 07:00:55Z 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.util;<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.ALOAD;<a name="line.24"></a> |
| <FONT color="green">025</FONT> import org.apache.bcel.generic.ASTORE;<a name="line.25"></a> |
| <FONT color="green">026</FONT> import org.apache.bcel.generic.BranchHandle;<a name="line.26"></a> |
| <FONT color="green">027</FONT> import org.apache.bcel.generic.ConstantPoolGen;<a name="line.27"></a> |
| <FONT color="green">028</FONT> import org.apache.bcel.generic.GOTO;<a name="line.28"></a> |
| <FONT color="green">029</FONT> import org.apache.bcel.generic.IFEQ;<a name="line.29"></a> |
| <FONT color="green">030</FONT> import org.apache.bcel.generic.IFNONNULL;<a name="line.30"></a> |
| <FONT color="green">031</FONT> import org.apache.bcel.generic.INVOKESTATIC;<a name="line.31"></a> |
| <FONT color="green">032</FONT> import org.apache.bcel.generic.INVOKEVIRTUAL;<a name="line.32"></a> |
| <FONT color="green">033</FONT> import org.apache.bcel.generic.Instruction;<a name="line.33"></a> |
| <FONT color="green">034</FONT> import org.apache.bcel.generic.InstructionList;<a name="line.34"></a> |
| <FONT color="green">035</FONT> import org.apache.bcel.generic.PUSH;<a name="line.35"></a> |
| <FONT color="green">036</FONT> import org.apache.xalan.xsltc.compiler.Constants;<a name="line.36"></a> |
| <FONT color="green">037</FONT> import org.apache.xalan.xsltc.compiler.FlowList;<a name="line.37"></a> |
| <FONT color="green">038</FONT> <a name="line.38"></a> |
| <FONT color="green">039</FONT> /**<a name="line.39"></a> |
| <FONT color="green">040</FONT> * @author Jacek Ambroziak<a name="line.40"></a> |
| <FONT color="green">041</FONT> * @author Santiago Pericas-Geertsen<a name="line.41"></a> |
| <FONT color="green">042</FONT> */<a name="line.42"></a> |
| <FONT color="green">043</FONT> public class StringType extends Type {<a name="line.43"></a> |
| <FONT color="green">044</FONT> protected StringType() {}<a name="line.44"></a> |
| <FONT color="green">045</FONT> <a name="line.45"></a> |
| <FONT color="green">046</FONT> public String toString() {<a name="line.46"></a> |
| <FONT color="green">047</FONT> return "string";<a name="line.47"></a> |
| <FONT color="green">048</FONT> }<a name="line.48"></a> |
| <FONT color="green">049</FONT> <a name="line.49"></a> |
| <FONT color="green">050</FONT> public boolean identicalTo(Type other) {<a name="line.50"></a> |
| <FONT color="green">051</FONT> return this == other;<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> public String toSignature() {<a name="line.54"></a> |
| <FONT color="green">055</FONT> return "Ljava/lang/String;";<a name="line.55"></a> |
| <FONT color="green">056</FONT> }<a name="line.56"></a> |
| <FONT color="green">057</FONT> <a name="line.57"></a> |
| <FONT color="green">058</FONT> public boolean isSimple() {<a name="line.58"></a> |
| <FONT color="green">059</FONT> return true;<a name="line.59"></a> |
| <FONT color="green">060</FONT> }<a name="line.60"></a> |
| <FONT color="green">061</FONT> <a name="line.61"></a> |
| <FONT color="green">062</FONT> public org.apache.bcel.generic.Type toJCType() {<a name="line.62"></a> |
| <FONT color="green">063</FONT> return org.apache.bcel.generic.Type.STRING;<a name="line.63"></a> |
| <FONT color="green">064</FONT> }<a name="line.64"></a> |
| <FONT color="green">065</FONT> <a name="line.65"></a> |
| <FONT color="green">066</FONT> /**<a name="line.66"></a> |
| <FONT color="green">067</FONT> * Translates a string into an object of internal type <code>type</code>.<a name="line.67"></a> |
| <FONT color="green">068</FONT> * The translation to int is undefined since strings are always converted<a name="line.68"></a> |
| <FONT color="green">069</FONT> * to reals in arithmetic expressions.<a name="line.69"></a> |
| <FONT color="green">070</FONT> *<a name="line.70"></a> |
| <FONT color="green">071</FONT> * @see org.apache.xalan.xsltc.compiler.util.Type#translateTo<a name="line.71"></a> |
| <FONT color="green">072</FONT> */<a name="line.72"></a> |
| <FONT color="green">073</FONT> public void translateTo(ClassGenerator classGen, MethodGenerator methodGen, <a name="line.73"></a> |
| <FONT color="green">074</FONT> Type type) {<a name="line.74"></a> |
| <FONT color="green">075</FONT> if (type == Type.Boolean) {<a name="line.75"></a> |
| <FONT color="green">076</FONT> translateTo(classGen, methodGen, (BooleanType) type);<a name="line.76"></a> |
| <FONT color="green">077</FONT> }<a name="line.77"></a> |
| <FONT color="green">078</FONT> else if (type == Type.Real) {<a name="line.78"></a> |
| <FONT color="green">079</FONT> translateTo(classGen, methodGen, (RealType) type);<a name="line.79"></a> |
| <FONT color="green">080</FONT> }<a name="line.80"></a> |
| <FONT color="green">081</FONT> else if (type == Type.Reference) {<a name="line.81"></a> |
| <FONT color="green">082</FONT> translateTo(classGen, methodGen, (ReferenceType) type);<a name="line.82"></a> |
| <FONT color="green">083</FONT> }<a name="line.83"></a> |
| <FONT color="green">084</FONT> else {<a name="line.84"></a> |
| <FONT color="green">085</FONT> ErrorMsg err = new ErrorMsg(ErrorMsg.DATA_CONVERSION_ERR,<a name="line.85"></a> |
| <FONT color="green">086</FONT> toString(), type.toString());<a name="line.86"></a> |
| <FONT color="green">087</FONT> classGen.getParser().reportError(Constants.FATAL, err);<a name="line.87"></a> |
| <FONT color="green">088</FONT> }<a name="line.88"></a> |
| <FONT color="green">089</FONT> }<a name="line.89"></a> |
| <FONT color="green">090</FONT> <a name="line.90"></a> |
| <FONT color="green">091</FONT> /**<a name="line.91"></a> |
| <FONT color="green">092</FONT> * Translates a string into a synthesized boolean.<a name="line.92"></a> |
| <FONT color="green">093</FONT> *<a name="line.93"></a> |
| <FONT color="green">094</FONT> * @see org.apache.xalan.xsltc.compiler.util.Type#translateTo<a name="line.94"></a> |
| <FONT color="green">095</FONT> */<a name="line.95"></a> |
| <FONT color="green">096</FONT> public void translateTo(ClassGenerator classGen, MethodGenerator methodGen, <a name="line.96"></a> |
| <FONT color="green">097</FONT> BooleanType type) {<a name="line.97"></a> |
| <FONT color="green">098</FONT> final InstructionList il = methodGen.getInstructionList();<a name="line.98"></a> |
| <FONT color="green">099</FONT> FlowList falsel = translateToDesynthesized(classGen, methodGen, type);<a name="line.99"></a> |
| <FONT color="green">100</FONT> il.append(ICONST_1);<a name="line.100"></a> |
| <FONT color="green">101</FONT> final BranchHandle truec = il.append(new GOTO(null));<a name="line.101"></a> |
| <FONT color="green">102</FONT> falsel.backPatch(il.append(ICONST_0));<a name="line.102"></a> |
| <FONT color="green">103</FONT> truec.setTarget(il.append(NOP));<a name="line.103"></a> |
| <FONT color="green">104</FONT> }<a name="line.104"></a> |
| <FONT color="green">105</FONT> <a name="line.105"></a> |
| <FONT color="green">106</FONT> /**<a name="line.106"></a> |
| <FONT color="green">107</FONT> * Translates a string into a real by calling stringToReal() from the<a name="line.107"></a> |
| <FONT color="green">108</FONT> * basis library.<a name="line.108"></a> |
| <FONT color="green">109</FONT> *<a name="line.109"></a> |
| <FONT color="green">110</FONT> * @see org.apache.xalan.xsltc.compiler.util.Type#translateTo<a name="line.110"></a> |
| <FONT color="green">111</FONT> */<a name="line.111"></a> |
| <FONT color="green">112</FONT> public void translateTo(ClassGenerator classGen, MethodGenerator methodGen,<a name="line.112"></a> |
| <FONT color="green">113</FONT> RealType type) {<a name="line.113"></a> |
| <FONT color="green">114</FONT> final ConstantPoolGen cpg = classGen.getConstantPool();<a name="line.114"></a> |
| <FONT color="green">115</FONT> final InstructionList il = methodGen.getInstructionList();<a name="line.115"></a> |
| <FONT color="green">116</FONT> il.append(new INVOKESTATIC(cpg.addMethodref(BASIS_LIBRARY_CLASS,<a name="line.116"></a> |
| <FONT color="green">117</FONT> STRING_TO_REAL,<a name="line.117"></a> |
| <FONT color="green">118</FONT> STRING_TO_REAL_SIG)));<a name="line.118"></a> |
| <FONT color="green">119</FONT> }<a name="line.119"></a> |
| <FONT color="green">120</FONT> <a name="line.120"></a> |
| <FONT color="green">121</FONT> /**<a name="line.121"></a> |
| <FONT color="green">122</FONT> * Translates a string into a non-synthesized boolean. It does not push a <a name="line.122"></a> |
| <FONT color="green">123</FONT> * 0 or a 1 but instead returns branchhandle list to be appended to the <a name="line.123"></a> |
| <FONT color="green">124</FONT> * false list.<a name="line.124"></a> |
| <FONT color="green">125</FONT> *<a name="line.125"></a> |
| <FONT color="green">126</FONT> * @see org.apache.xalan.xsltc.compiler.util.Type#translateToDesynthesized<a name="line.126"></a> |
| <FONT color="green">127</FONT> */<a name="line.127"></a> |
| <FONT color="green">128</FONT> public FlowList translateToDesynthesized(ClassGenerator classGen, <a name="line.128"></a> |
| <FONT color="green">129</FONT> MethodGenerator methodGen, <a name="line.129"></a> |
| <FONT color="green">130</FONT> BooleanType type) {<a name="line.130"></a> |
| <FONT color="green">131</FONT> final ConstantPoolGen cpg = classGen.getConstantPool();<a name="line.131"></a> |
| <FONT color="green">132</FONT> final InstructionList il = methodGen.getInstructionList();<a name="line.132"></a> |
| <FONT color="green">133</FONT> <a name="line.133"></a> |
| <FONT color="green">134</FONT> il.append(new INVOKEVIRTUAL(cpg.addMethodref(STRING_CLASS,<a name="line.134"></a> |
| <FONT color="green">135</FONT> "length", "()I")));<a name="line.135"></a> |
| <FONT color="green">136</FONT> return new FlowList(il.append(new IFEQ(null)));<a name="line.136"></a> |
| <FONT color="green">137</FONT> }<a name="line.137"></a> |
| <FONT color="green">138</FONT> <a name="line.138"></a> |
| <FONT color="green">139</FONT> /**<a name="line.139"></a> |
| <FONT color="green">140</FONT> * Expects a string on the stack and pushes a boxed string.<a name="line.140"></a> |
| <FONT color="green">141</FONT> * Strings are already boxed so the translation is just a NOP.<a name="line.141"></a> |
| <FONT color="green">142</FONT> *<a name="line.142"></a> |
| <FONT color="green">143</FONT> * @see org.apache.xalan.xsltc.compiler.util.Type#translateTo<a name="line.143"></a> |
| <FONT color="green">144</FONT> */<a name="line.144"></a> |
| <FONT color="green">145</FONT> public void translateTo(ClassGenerator classGen, MethodGenerator methodGen, <a name="line.145"></a> |
| <FONT color="green">146</FONT> ReferenceType type) {<a name="line.146"></a> |
| <FONT color="green">147</FONT> methodGen.getInstructionList().append(NOP);<a name="line.147"></a> |
| <FONT color="green">148</FONT> }<a name="line.148"></a> |
| <FONT color="green">149</FONT> <a name="line.149"></a> |
| <FONT color="green">150</FONT> /**<a name="line.150"></a> |
| <FONT color="green">151</FONT> * Translates a internal string into an external (Java) string. <a name="line.151"></a> |
| <FONT color="green">152</FONT> *<a name="line.152"></a> |
| <FONT color="green">153</FONT> * @see org.apache.xalan.xsltc.compiler.util.Type#translateFrom<a name="line.153"></a> |
| <FONT color="green">154</FONT> */<a name="line.154"></a> |
| <FONT color="green">155</FONT> public void translateTo(ClassGenerator classGen, MethodGenerator methodGen, <a name="line.155"></a> |
| <FONT color="green">156</FONT> Class clazz) <a name="line.156"></a> |
| <FONT color="green">157</FONT> {<a name="line.157"></a> |
| <FONT color="green">158</FONT> // Is String <: clazz? I.e. clazz in { String, Object }<a name="line.158"></a> |
| <FONT color="green">159</FONT> if (clazz.isAssignableFrom(java.lang.String.class)) {<a name="line.159"></a> |
| <FONT color="green">160</FONT> methodGen.getInstructionList().append(NOP);<a name="line.160"></a> |
| <FONT color="green">161</FONT> }<a name="line.161"></a> |
| <FONT color="green">162</FONT> else {<a name="line.162"></a> |
| <FONT color="green">163</FONT> ErrorMsg err = new ErrorMsg(ErrorMsg.DATA_CONVERSION_ERR,<a name="line.163"></a> |
| <FONT color="green">164</FONT> toString(), clazz.getName());<a name="line.164"></a> |
| <FONT color="green">165</FONT> classGen.getParser().reportError(Constants.FATAL, err);<a name="line.165"></a> |
| <FONT color="green">166</FONT> }<a name="line.166"></a> |
| <FONT color="green">167</FONT> }<a name="line.167"></a> |
| <FONT color="green">168</FONT> <a name="line.168"></a> |
| <FONT color="green">169</FONT> /**<a name="line.169"></a> |
| <FONT color="green">170</FONT> * Translates an external (primitive) Java type into a string. <a name="line.170"></a> |
| <FONT color="green">171</FONT> *<a name="line.171"></a> |
| <FONT color="green">172</FONT> * @see org.apache.xalan.xsltc.compiler.util.Type#translateFrom<a name="line.172"></a> |
| <FONT color="green">173</FONT> */<a name="line.173"></a> |
| <FONT color="green">174</FONT> public void translateFrom(ClassGenerator classGen, <a name="line.174"></a> |
| <FONT color="green">175</FONT> MethodGenerator methodGen, Class clazz) <a name="line.175"></a> |
| <FONT color="green">176</FONT> {<a name="line.176"></a> |
| <FONT color="green">177</FONT> final ConstantPoolGen cpg = classGen.getConstantPool();<a name="line.177"></a> |
| <FONT color="green">178</FONT> final InstructionList il = methodGen.getInstructionList();<a name="line.178"></a> |
| <FONT color="green">179</FONT> <a name="line.179"></a> |
| <FONT color="green">180</FONT> if (clazz.getName().equals("java.lang.String")) {<a name="line.180"></a> |
| <FONT color="green">181</FONT> // same internal representation, convert null to ""<a name="line.181"></a> |
| <FONT color="green">182</FONT> il.append(DUP);<a name="line.182"></a> |
| <FONT color="green">183</FONT> final BranchHandle ifNonNull = il.append(new IFNONNULL(null));<a name="line.183"></a> |
| <FONT color="green">184</FONT> il.append(POP);<a name="line.184"></a> |
| <FONT color="green">185</FONT> il.append(new PUSH(cpg, ""));<a name="line.185"></a> |
| <FONT color="green">186</FONT> ifNonNull.setTarget(il.append(NOP));<a name="line.186"></a> |
| <FONT color="green">187</FONT> }<a name="line.187"></a> |
| <FONT color="green">188</FONT> else {<a name="line.188"></a> |
| <FONT color="green">189</FONT> ErrorMsg err = new ErrorMsg(ErrorMsg.DATA_CONVERSION_ERR,<a name="line.189"></a> |
| <FONT color="green">190</FONT> toString(), clazz.getName());<a name="line.190"></a> |
| <FONT color="green">191</FONT> classGen.getParser().reportError(Constants.FATAL, err);<a name="line.191"></a> |
| <FONT color="green">192</FONT> }<a name="line.192"></a> |
| <FONT color="green">193</FONT> }<a name="line.193"></a> |
| <FONT color="green">194</FONT> <a name="line.194"></a> |
| <FONT color="green">195</FONT> /**<a name="line.195"></a> |
| <FONT color="green">196</FONT> * Translates an object of this type to its boxed representation.<a name="line.196"></a> |
| <FONT color="green">197</FONT> */ <a name="line.197"></a> |
| <FONT color="green">198</FONT> public void translateBox(ClassGenerator classGen,<a name="line.198"></a> |
| <FONT color="green">199</FONT> MethodGenerator methodGen) {<a name="line.199"></a> |
| <FONT color="green">200</FONT> translateTo(classGen, methodGen, Type.Reference);<a name="line.200"></a> |
| <FONT color="green">201</FONT> }<a name="line.201"></a> |
| <FONT color="green">202</FONT> <a name="line.202"></a> |
| <FONT color="green">203</FONT> /**<a name="line.203"></a> |
| <FONT color="green">204</FONT> * Translates an object of this type to its unboxed representation.<a name="line.204"></a> |
| <FONT color="green">205</FONT> */ <a name="line.205"></a> |
| <FONT color="green">206</FONT> public void translateUnBox(ClassGenerator classGen,<a name="line.206"></a> |
| <FONT color="green">207</FONT> MethodGenerator methodGen) {<a name="line.207"></a> |
| <FONT color="green">208</FONT> methodGen.getInstructionList().append(NOP);<a name="line.208"></a> |
| <FONT color="green">209</FONT> }<a name="line.209"></a> |
| <FONT color="green">210</FONT> <a name="line.210"></a> |
| <FONT color="green">211</FONT> /**<a name="line.211"></a> |
| <FONT color="green">212</FONT> * Returns the class name of an internal type's external representation.<a name="line.212"></a> |
| <FONT color="green">213</FONT> */<a name="line.213"></a> |
| <FONT color="green">214</FONT> public String getClassName() {<a name="line.214"></a> |
| <FONT color="green">215</FONT> return(STRING_CLASS);<a name="line.215"></a> |
| <FONT color="green">216</FONT> }<a name="line.216"></a> |
| <FONT color="green">217</FONT> <a name="line.217"></a> |
| <FONT color="green">218</FONT> <a name="line.218"></a> |
| <FONT color="green">219</FONT> public Instruction LOAD(int slot) {<a name="line.219"></a> |
| <FONT color="green">220</FONT> return new ALOAD(slot);<a name="line.220"></a> |
| <FONT color="green">221</FONT> }<a name="line.221"></a> |
| <FONT color="green">222</FONT> <a name="line.222"></a> |
| <FONT color="green">223</FONT> public Instruction STORE(int slot) {<a name="line.223"></a> |
| <FONT color="green">224</FONT> return new ASTORE(slot);<a name="line.224"></a> |
| <FONT color="green">225</FONT> }<a name="line.225"></a> |
| <FONT color="green">226</FONT> }<a name="line.226"></a> |
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