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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: XNumber.java 469368 2006-10-31 04:41:36Z minchau $<a name="line.19"></a> |
| <FONT color="green">020</FONT> */<a name="line.20"></a> |
| <FONT color="green">021</FONT> package org.apache.xpath.objects;<a name="line.21"></a> |
| <FONT color="green">022</FONT> <a name="line.22"></a> |
| <FONT color="green">023</FONT> import org.apache.xpath.ExpressionOwner;<a name="line.23"></a> |
| <FONT color="green">024</FONT> import org.apache.xpath.XPathContext;<a name="line.24"></a> |
| <FONT color="green">025</FONT> import org.apache.xpath.XPathVisitor;<a name="line.25"></a> |
| <FONT color="green">026</FONT> <a name="line.26"></a> |
| <FONT color="green">027</FONT> /**<a name="line.27"></a> |
| <FONT color="green">028</FONT> * This class represents an XPath number, and is capable of<a name="line.28"></a> |
| <FONT color="green">029</FONT> * converting the number to other types, such as a string.<a name="line.29"></a> |
| <FONT color="green">030</FONT> * @xsl.usage general<a name="line.30"></a> |
| <FONT color="green">031</FONT> */<a name="line.31"></a> |
| <FONT color="green">032</FONT> public class XNumber extends XObject<a name="line.32"></a> |
| <FONT color="green">033</FONT> {<a name="line.33"></a> |
| <FONT color="green">034</FONT> static final long serialVersionUID = -2720400709619020193L;<a name="line.34"></a> |
| <FONT color="green">035</FONT> <a name="line.35"></a> |
| <FONT color="green">036</FONT> /** Value of the XNumber object.<a name="line.36"></a> |
| <FONT color="green">037</FONT> * @serial */<a name="line.37"></a> |
| <FONT color="green">038</FONT> double m_val;<a name="line.38"></a> |
| <FONT color="green">039</FONT> <a name="line.39"></a> |
| <FONT color="green">040</FONT> /**<a name="line.40"></a> |
| <FONT color="green">041</FONT> * Construct a XNodeSet object.<a name="line.41"></a> |
| <FONT color="green">042</FONT> *<a name="line.42"></a> |
| <FONT color="green">043</FONT> * @param d Value of the object<a name="line.43"></a> |
| <FONT color="green">044</FONT> */<a name="line.44"></a> |
| <FONT color="green">045</FONT> public XNumber(double d)<a name="line.45"></a> |
| <FONT color="green">046</FONT> {<a name="line.46"></a> |
| <FONT color="green">047</FONT> super();<a name="line.47"></a> |
| <FONT color="green">048</FONT> <a name="line.48"></a> |
| <FONT color="green">049</FONT> m_val = d;<a name="line.49"></a> |
| <FONT color="green">050</FONT> }<a name="line.50"></a> |
| <FONT color="green">051</FONT> <a name="line.51"></a> |
| <FONT color="green">052</FONT> /**<a name="line.52"></a> |
| <FONT color="green">053</FONT> * Construct a XNodeSet object.<a name="line.53"></a> |
| <FONT color="green">054</FONT> *<a name="line.54"></a> |
| <FONT color="green">055</FONT> * @param num Value of the object<a name="line.55"></a> |
| <FONT color="green">056</FONT> */<a name="line.56"></a> |
| <FONT color="green">057</FONT> public XNumber(Number num)<a name="line.57"></a> |
| <FONT color="green">058</FONT> {<a name="line.58"></a> |
| <FONT color="green">059</FONT> <a name="line.59"></a> |
| <FONT color="green">060</FONT> super();<a name="line.60"></a> |
| <FONT color="green">061</FONT> <a name="line.61"></a> |
| <FONT color="green">062</FONT> m_val = num.doubleValue();<a name="line.62"></a> |
| <FONT color="green">063</FONT> setObject(num);<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> * Tell that this is a CLASS_NUMBER.<a name="line.67"></a> |
| <FONT color="green">068</FONT> *<a name="line.68"></a> |
| <FONT color="green">069</FONT> * @return node type CLASS_NUMBER <a name="line.69"></a> |
| <FONT color="green">070</FONT> */<a name="line.70"></a> |
| <FONT color="green">071</FONT> public int getType()<a name="line.71"></a> |
| <FONT color="green">072</FONT> {<a name="line.72"></a> |
| <FONT color="green">073</FONT> return CLASS_NUMBER;<a name="line.73"></a> |
| <FONT color="green">074</FONT> }<a name="line.74"></a> |
| <FONT color="green">075</FONT> <a name="line.75"></a> |
| <FONT color="green">076</FONT> /**<a name="line.76"></a> |
| <FONT color="green">077</FONT> * Given a request type, return the equivalent string.<a name="line.77"></a> |
| <FONT color="green">078</FONT> * For diagnostic purposes.<a name="line.78"></a> |
| <FONT color="green">079</FONT> *<a name="line.79"></a> |
| <FONT color="green">080</FONT> * @return type string "#NUMBER" <a name="line.80"></a> |
| <FONT color="green">081</FONT> */<a name="line.81"></a> |
| <FONT color="green">082</FONT> public String getTypeString()<a name="line.82"></a> |
| <FONT color="green">083</FONT> {<a name="line.83"></a> |
| <FONT color="green">084</FONT> return "#NUMBER";<a name="line.84"></a> |
| <FONT color="green">085</FONT> }<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> * Cast result object to a number.<a name="line.88"></a> |
| <FONT color="green">089</FONT> *<a name="line.89"></a> |
| <FONT color="green">090</FONT> * @return the value of the XNumber object<a name="line.90"></a> |
| <FONT color="green">091</FONT> */<a name="line.91"></a> |
| <FONT color="green">092</FONT> public double num()<a name="line.92"></a> |
| <FONT color="green">093</FONT> {<a name="line.93"></a> |
| <FONT color="green">094</FONT> return m_val;<a name="line.94"></a> |
| <FONT color="green">095</FONT> }<a name="line.95"></a> |
| <FONT color="green">096</FONT> <a name="line.96"></a> |
| <FONT color="green">097</FONT> /**<a name="line.97"></a> |
| <FONT color="green">098</FONT> * Evaluate expression to a number.<a name="line.98"></a> |
| <FONT color="green">099</FONT> *<a name="line.99"></a> |
| <FONT color="green">100</FONT> * @return 0.0<a name="line.100"></a> |
| <FONT color="green">101</FONT> *<a name="line.101"></a> |
| <FONT color="green">102</FONT> * @throws javax.xml.transform.TransformerException<a name="line.102"></a> |
| <FONT color="green">103</FONT> */<a name="line.103"></a> |
| <FONT color="green">104</FONT> public double num(XPathContext xctxt) <a name="line.104"></a> |
| <FONT color="green">105</FONT> throws javax.xml.transform.TransformerException<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> return m_val;<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> /**<a name="line.111"></a> |
| <FONT color="green">112</FONT> * Cast result object to a boolean.<a name="line.112"></a> |
| <FONT color="green">113</FONT> *<a name="line.113"></a> |
| <FONT color="green">114</FONT> * @return false if the value is NaN or equal to 0.0<a name="line.114"></a> |
| <FONT color="green">115</FONT> */<a name="line.115"></a> |
| <FONT color="green">116</FONT> public boolean bool()<a name="line.116"></a> |
| <FONT color="green">117</FONT> {<a name="line.117"></a> |
| <FONT color="green">118</FONT> return (Double.isNaN(m_val) || (m_val == 0.0)) ? false : true;<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> // * Cast result object to a string.<a name="line.122"></a> |
| <FONT color="green">123</FONT> // *<a name="line.123"></a> |
| <FONT color="green">124</FONT> // * @return "NaN" if the number is NaN, Infinity or -Infinity if<a name="line.124"></a> |
| <FONT color="green">125</FONT> // * the number is infinite or the string value of the number.<a name="line.125"></a> |
| <FONT color="green">126</FONT> // */<a name="line.126"></a> |
| <FONT color="green">127</FONT> // private static final int PRECISION = 16;<a name="line.127"></a> |
| <FONT color="green">128</FONT> // public String str()<a name="line.128"></a> |
| <FONT color="green">129</FONT> // {<a name="line.129"></a> |
| <FONT color="green">130</FONT> //<a name="line.130"></a> |
| <FONT color="green">131</FONT> // if (Double.isNaN(m_val))<a name="line.131"></a> |
| <FONT color="green">132</FONT> // {<a name="line.132"></a> |
| <FONT color="green">133</FONT> // return "NaN";<a name="line.133"></a> |
| <FONT color="green">134</FONT> // }<a name="line.134"></a> |
| <FONT color="green">135</FONT> // else if (Double.isInfinite(m_val))<a name="line.135"></a> |
| <FONT color="green">136</FONT> // {<a name="line.136"></a> |
| <FONT color="green">137</FONT> // if (m_val > 0)<a name="line.137"></a> |
| <FONT color="green">138</FONT> // return "Infinity";<a name="line.138"></a> |
| <FONT color="green">139</FONT> // else<a name="line.139"></a> |
| <FONT color="green">140</FONT> // return "-Infinity";<a name="line.140"></a> |
| <FONT color="green">141</FONT> // }<a name="line.141"></a> |
| <FONT color="green">142</FONT> //<a name="line.142"></a> |
| <FONT color="green">143</FONT> // long longVal = (long)m_val;<a name="line.143"></a> |
| <FONT color="green">144</FONT> // if ((double)longVal == m_val)<a name="line.144"></a> |
| <FONT color="green">145</FONT> // return Long.toString(longVal);<a name="line.145"></a> |
| <FONT color="green">146</FONT> //<a name="line.146"></a> |
| <FONT color="green">147</FONT> //<a name="line.147"></a> |
| <FONT color="green">148</FONT> // String s = Double.toString(m_val);<a name="line.148"></a> |
| <FONT color="green">149</FONT> // int len = s.length();<a name="line.149"></a> |
| <FONT color="green">150</FONT> //<a name="line.150"></a> |
| <FONT color="green">151</FONT> // if (s.charAt(len - 2) == '.' && s.charAt(len - 1) == '0')<a name="line.151"></a> |
| <FONT color="green">152</FONT> // {<a name="line.152"></a> |
| <FONT color="green">153</FONT> // return s.substring(0, len - 2);<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> |
| <FONT color="green">156</FONT> // int exp = 0;<a name="line.156"></a> |
| <FONT color="green">157</FONT> // int e = s.indexOf('E');<a name="line.157"></a> |
| <FONT color="green">158</FONT> // if (e != -1)<a name="line.158"></a> |
| <FONT color="green">159</FONT> // {<a name="line.159"></a> |
| <FONT color="green">160</FONT> // exp = Integer.parseInt(s.substring(e + 1));<a name="line.160"></a> |
| <FONT color="green">161</FONT> // s = s.substring(0,e);<a name="line.161"></a> |
| <FONT color="green">162</FONT> // len = e;<a name="line.162"></a> |
| <FONT color="green">163</FONT> // }<a name="line.163"></a> |
| <FONT color="green">164</FONT> //<a name="line.164"></a> |
| <FONT color="green">165</FONT> // // Calculate Significant Digits:<a name="line.165"></a> |
| <FONT color="green">166</FONT> // // look from start of string for first digit<a name="line.166"></a> |
| <FONT color="green">167</FONT> // // look from end for last digit<a name="line.167"></a> |
| <FONT color="green">168</FONT> // // significant digits = end - start + (0 or 1 depending on decimal location)<a name="line.168"></a> |
| <FONT color="green">169</FONT> //<a name="line.169"></a> |
| <FONT color="green">170</FONT> // int decimalPos = -1;<a name="line.170"></a> |
| <FONT color="green">171</FONT> // int start = (s.charAt(0) == '-') ? 1 : 0;<a name="line.171"></a> |
| <FONT color="green">172</FONT> // findStart: for( ; start < len; start++ )<a name="line.172"></a> |
| <FONT color="green">173</FONT> // {<a name="line.173"></a> |
| <FONT color="green">174</FONT> // switch (s.charAt(start))<a name="line.174"></a> |
| <FONT color="green">175</FONT> // {<a name="line.175"></a> |
| <FONT color="green">176</FONT> // case '0':<a name="line.176"></a> |
| <FONT color="green">177</FONT> // break;<a name="line.177"></a> |
| <FONT color="green">178</FONT> // case '.':<a name="line.178"></a> |
| <FONT color="green">179</FONT> // decimalPos = start;<a name="line.179"></a> |
| <FONT color="green">180</FONT> // break;<a name="line.180"></a> |
| <FONT color="green">181</FONT> // default:<a name="line.181"></a> |
| <FONT color="green">182</FONT> // break findStart;<a name="line.182"></a> |
| <FONT color="green">183</FONT> // }<a name="line.183"></a> |
| <FONT color="green">184</FONT> // }<a name="line.184"></a> |
| <FONT color="green">185</FONT> // int end = s.length() - 1;<a name="line.185"></a> |
| <FONT color="green">186</FONT> // findEnd: for( ; end > start; end-- )<a name="line.186"></a> |
| <FONT color="green">187</FONT> // {<a name="line.187"></a> |
| <FONT color="green">188</FONT> // switch (s.charAt(end))<a name="line.188"></a> |
| <FONT color="green">189</FONT> // {<a name="line.189"></a> |
| <FONT color="green">190</FONT> // case '0':<a name="line.190"></a> |
| <FONT color="green">191</FONT> // break;<a name="line.191"></a> |
| <FONT color="green">192</FONT> // case '.':<a name="line.192"></a> |
| <FONT color="green">193</FONT> // decimalPos = end;<a name="line.193"></a> |
| <FONT color="green">194</FONT> // break;<a name="line.194"></a> |
| <FONT color="green">195</FONT> // default:<a name="line.195"></a> |
| <FONT color="green">196</FONT> // break findEnd;<a name="line.196"></a> |
| <FONT color="green">197</FONT> // }<a name="line.197"></a> |
| <FONT color="green">198</FONT> // }<a name="line.198"></a> |
| <FONT color="green">199</FONT> //<a name="line.199"></a> |
| <FONT color="green">200</FONT> // int sigDig = end - start;<a name="line.200"></a> |
| <FONT color="green">201</FONT> //<a name="line.201"></a> |
| <FONT color="green">202</FONT> // // clarify decimal location if it has not yet been found<a name="line.202"></a> |
| <FONT color="green">203</FONT> // if (decimalPos == -1)<a name="line.203"></a> |
| <FONT color="green">204</FONT> // decimalPos = s.indexOf('.');<a name="line.204"></a> |
| <FONT color="green">205</FONT> //<a name="line.205"></a> |
| <FONT color="green">206</FONT> // // if decimal is not between start and end, add one to sigDig<a name="line.206"></a> |
| <FONT color="green">207</FONT> // if (decimalPos < start || decimalPos > end)<a name="line.207"></a> |
| <FONT color="green">208</FONT> // ++sigDig;<a name="line.208"></a> |
| <FONT color="green">209</FONT> //<a name="line.209"></a> |
| <FONT color="green">210</FONT> // // reduce significant digits to PRECISION if necessary<a name="line.210"></a> |
| <FONT color="green">211</FONT> // if (sigDig > PRECISION)<a name="line.211"></a> |
| <FONT color="green">212</FONT> // {<a name="line.212"></a> |
| <FONT color="green">213</FONT> // // re-scale BigDecimal in order to get significant digits = PRECISION<a name="line.213"></a> |
| <FONT color="green">214</FONT> // BigDecimal num = new BigDecimal(s);<a name="line.214"></a> |
| <FONT color="green">215</FONT> // int newScale = num.scale() - (sigDig - PRECISION);<a name="line.215"></a> |
| <FONT color="green">216</FONT> // if (newScale < 0)<a name="line.216"></a> |
| <FONT color="green">217</FONT> // newScale = 0;<a name="line.217"></a> |
| <FONT color="green">218</FONT> // s = num.setScale(newScale, BigDecimal.ROUND_HALF_UP).toString();<a name="line.218"></a> |
| <FONT color="green">219</FONT> //<a name="line.219"></a> |
| <FONT color="green">220</FONT> // // remove trailing '0's; keep track of decimalPos<a name="line.220"></a> |
| <FONT color="green">221</FONT> // int truncatePoint = s.length();<a name="line.221"></a> |
| <FONT color="green">222</FONT> // while (s.charAt(--truncatePoint) == '0')<a name="line.222"></a> |
| <FONT color="green">223</FONT> // ;<a name="line.223"></a> |
| <FONT color="green">224</FONT> //<a name="line.224"></a> |
| <FONT color="green">225</FONT> // if (s.charAt(truncatePoint) == '.')<a name="line.225"></a> |
| <FONT color="green">226</FONT> // {<a name="line.226"></a> |
| <FONT color="green">227</FONT> // decimalPos = truncatePoint;<a name="line.227"></a> |
| <FONT color="green">228</FONT> // }<a name="line.228"></a> |
| <FONT color="green">229</FONT> // else<a name="line.229"></a> |
| <FONT color="green">230</FONT> // {<a name="line.230"></a> |
| <FONT color="green">231</FONT> // decimalPos = s.indexOf('.');<a name="line.231"></a> |
| <FONT color="green">232</FONT> // truncatePoint += 1;<a name="line.232"></a> |
| <FONT color="green">233</FONT> // }<a name="line.233"></a> |
| <FONT color="green">234</FONT> //<a name="line.234"></a> |
| <FONT color="green">235</FONT> // s = s.substring(0, truncatePoint);<a name="line.235"></a> |
| <FONT color="green">236</FONT> // len = s.length();<a name="line.236"></a> |
| <FONT color="green">237</FONT> // }<a name="line.237"></a> |
| <FONT color="green">238</FONT> //<a name="line.238"></a> |
| <FONT color="green">239</FONT> // // Account for exponent by adding zeros as needed <a name="line.239"></a> |
| <FONT color="green">240</FONT> // // and moving the decimal place<a name="line.240"></a> |
| <FONT color="green">241</FONT> //<a name="line.241"></a> |
| <FONT color="green">242</FONT> // if (exp == 0)<a name="line.242"></a> |
| <FONT color="green">243</FONT> // return s;<a name="line.243"></a> |
| <FONT color="green">244</FONT> //<a name="line.244"></a> |
| <FONT color="green">245</FONT> // start = 0;<a name="line.245"></a> |
| <FONT color="green">246</FONT> // String sign;<a name="line.246"></a> |
| <FONT color="green">247</FONT> // if (s.charAt(0) == '-')<a name="line.247"></a> |
| <FONT color="green">248</FONT> // {<a name="line.248"></a> |
| <FONT color="green">249</FONT> // sign = "-";<a name="line.249"></a> |
| <FONT color="green">250</FONT> // start++;<a name="line.250"></a> |
| <FONT color="green">251</FONT> // }<a name="line.251"></a> |
| <FONT color="green">252</FONT> // else<a name="line.252"></a> |
| <FONT color="green">253</FONT> // sign = "";<a name="line.253"></a> |
| <FONT color="green">254</FONT> //<a name="line.254"></a> |
| <FONT color="green">255</FONT> // String wholePart = s.substring(start, decimalPos);<a name="line.255"></a> |
| <FONT color="green">256</FONT> // String decimalPart = s.substring(decimalPos + 1);<a name="line.256"></a> |
| <FONT color="green">257</FONT> //<a name="line.257"></a> |
| <FONT color="green">258</FONT> // // get the number of digits right of the decimal<a name="line.258"></a> |
| <FONT color="green">259</FONT> // int decimalLen = decimalPart.length();<a name="line.259"></a> |
| <FONT color="green">260</FONT> //<a name="line.260"></a> |
| <FONT color="green">261</FONT> // if (exp >= decimalLen)<a name="line.261"></a> |
| <FONT color="green">262</FONT> // return sign + wholePart + decimalPart + zeros(exp - decimalLen);<a name="line.262"></a> |
| <FONT color="green">263</FONT> //<a name="line.263"></a> |
| <FONT color="green">264</FONT> // if (exp > 0)<a name="line.264"></a> |
| <FONT color="green">265</FONT> // return sign + wholePart + decimalPart.substring(0, exp) + "."<a name="line.265"></a> |
| <FONT color="green">266</FONT> // + decimalPart.substring(exp);<a name="line.266"></a> |
| <FONT color="green">267</FONT> //<a name="line.267"></a> |
| <FONT color="green">268</FONT> // return sign + "0." + zeros(-1 - exp) + wholePart + decimalPart;<a name="line.268"></a> |
| <FONT color="green">269</FONT> // }<a name="line.269"></a> |
| <FONT color="green">270</FONT> <a name="line.270"></a> |
| <FONT color="green">271</FONT> /**<a name="line.271"></a> |
| <FONT color="green">272</FONT> * Cast result object to a string.<a name="line.272"></a> |
| <FONT color="green">273</FONT> *<a name="line.273"></a> |
| <FONT color="green">274</FONT> * @return "NaN" if the number is NaN, Infinity or -Infinity if<a name="line.274"></a> |
| <FONT color="green">275</FONT> * the number is infinite or the string value of the number.<a name="line.275"></a> |
| <FONT color="green">276</FONT> */<a name="line.276"></a> |
| <FONT color="green">277</FONT> public String str()<a name="line.277"></a> |
| <FONT color="green">278</FONT> {<a name="line.278"></a> |
| <FONT color="green">279</FONT> <a name="line.279"></a> |
| <FONT color="green">280</FONT> if (Double.isNaN(m_val))<a name="line.280"></a> |
| <FONT color="green">281</FONT> {<a name="line.281"></a> |
| <FONT color="green">282</FONT> return "NaN";<a name="line.282"></a> |
| <FONT color="green">283</FONT> }<a name="line.283"></a> |
| <FONT color="green">284</FONT> else if (Double.isInfinite(m_val))<a name="line.284"></a> |
| <FONT color="green">285</FONT> {<a name="line.285"></a> |
| <FONT color="green">286</FONT> if (m_val > 0)<a name="line.286"></a> |
| <FONT color="green">287</FONT> return "Infinity";<a name="line.287"></a> |
| <FONT color="green">288</FONT> else<a name="line.288"></a> |
| <FONT color="green">289</FONT> return "-Infinity";<a name="line.289"></a> |
| <FONT color="green">290</FONT> }<a name="line.290"></a> |
| <FONT color="green">291</FONT> <a name="line.291"></a> |
| <FONT color="green">292</FONT> double num = m_val;<a name="line.292"></a> |
| <FONT color="green">293</FONT> String s = Double.toString(num);<a name="line.293"></a> |
| <FONT color="green">294</FONT> int len = s.length();<a name="line.294"></a> |
| <FONT color="green">295</FONT> <a name="line.295"></a> |
| <FONT color="green">296</FONT> if (s.charAt(len - 2) == '.' && s.charAt(len - 1) == '0')<a name="line.296"></a> |
| <FONT color="green">297</FONT> {<a name="line.297"></a> |
| <FONT color="green">298</FONT> s = s.substring(0, len - 2);<a name="line.298"></a> |
| <FONT color="green">299</FONT> <a name="line.299"></a> |
| <FONT color="green">300</FONT> if (s.equals("-0"))<a name="line.300"></a> |
| <FONT color="green">301</FONT> return "0";<a name="line.301"></a> |
| <FONT color="green">302</FONT> <a name="line.302"></a> |
| <FONT color="green">303</FONT> return s;<a name="line.303"></a> |
| <FONT color="green">304</FONT> }<a name="line.304"></a> |
| <FONT color="green">305</FONT> <a name="line.305"></a> |
| <FONT color="green">306</FONT> int e = s.indexOf('E');<a name="line.306"></a> |
| <FONT color="green">307</FONT> <a name="line.307"></a> |
| <FONT color="green">308</FONT> if (e < 0)<a name="line.308"></a> |
| <FONT color="green">309</FONT> {<a name="line.309"></a> |
| <FONT color="green">310</FONT> if (s.charAt(len - 1) == '0')<a name="line.310"></a> |
| <FONT color="green">311</FONT> return s.substring(0, len - 1);<a name="line.311"></a> |
| <FONT color="green">312</FONT> else<a name="line.312"></a> |
| <FONT color="green">313</FONT> return s;<a name="line.313"></a> |
| <FONT color="green">314</FONT> }<a name="line.314"></a> |
| <FONT color="green">315</FONT> <a name="line.315"></a> |
| <FONT color="green">316</FONT> int exp = Integer.parseInt(s.substring(e + 1));<a name="line.316"></a> |
| <FONT color="green">317</FONT> String sign;<a name="line.317"></a> |
| <FONT color="green">318</FONT> <a name="line.318"></a> |
| <FONT color="green">319</FONT> if (s.charAt(0) == '-')<a name="line.319"></a> |
| <FONT color="green">320</FONT> {<a name="line.320"></a> |
| <FONT color="green">321</FONT> sign = "-";<a name="line.321"></a> |
| <FONT color="green">322</FONT> s = s.substring(1);<a name="line.322"></a> |
| <FONT color="green">323</FONT> <a name="line.323"></a> |
| <FONT color="green">324</FONT> --e;<a name="line.324"></a> |
| <FONT color="green">325</FONT> }<a name="line.325"></a> |
| <FONT color="green">326</FONT> else<a name="line.326"></a> |
| <FONT color="green">327</FONT> sign = "";<a name="line.327"></a> |
| <FONT color="green">328</FONT> <a name="line.328"></a> |
| <FONT color="green">329</FONT> int nDigits = e - 2;<a name="line.329"></a> |
| <FONT color="green">330</FONT> <a name="line.330"></a> |
| <FONT color="green">331</FONT> if (exp >= nDigits)<a name="line.331"></a> |
| <FONT color="green">332</FONT> return sign + s.substring(0, 1) + s.substring(2, e)<a name="line.332"></a> |
| <FONT color="green">333</FONT> + zeros(exp - nDigits);<a name="line.333"></a> |
| <FONT color="green">334</FONT> <a name="line.334"></a> |
| <FONT color="green">335</FONT> // Eliminate trailing 0's - bugzilla 14241<a name="line.335"></a> |
| <FONT color="green">336</FONT> while (s.charAt(e-1) == '0')<a name="line.336"></a> |
| <FONT color="green">337</FONT> e--;<a name="line.337"></a> |
| <FONT color="green">338</FONT> <a name="line.338"></a> |
| <FONT color="green">339</FONT> if (exp > 0)<a name="line.339"></a> |
| <FONT color="green">340</FONT> return sign + s.substring(0, 1) + s.substring(2, 2 + exp) + "."<a name="line.340"></a> |
| <FONT color="green">341</FONT> + s.substring(2 + exp, e);<a name="line.341"></a> |
| <FONT color="green">342</FONT> <a name="line.342"></a> |
| <FONT color="green">343</FONT> return sign + "0." + zeros(-1 - exp) + s.substring(0, 1)<a name="line.343"></a> |
| <FONT color="green">344</FONT> + s.substring(2, e);<a name="line.344"></a> |
| <FONT color="green">345</FONT> }<a name="line.345"></a> |
| <FONT color="green">346</FONT> <a name="line.346"></a> |
| <FONT color="green">347</FONT> <a name="line.347"></a> |
| <FONT color="green">348</FONT> /**<a name="line.348"></a> |
| <FONT color="green">349</FONT> * Return a string of '0' of the given length<a name="line.349"></a> |
| <FONT color="green">350</FONT> *<a name="line.350"></a> |
| <FONT color="green">351</FONT> *<a name="line.351"></a> |
| <FONT color="green">352</FONT> * @param n Length of the string to be returned<a name="line.352"></a> |
| <FONT color="green">353</FONT> *<a name="line.353"></a> |
| <FONT color="green">354</FONT> * @return a string of '0' with the given length<a name="line.354"></a> |
| <FONT color="green">355</FONT> */<a name="line.355"></a> |
| <FONT color="green">356</FONT> static private String zeros(int n)<a name="line.356"></a> |
| <FONT color="green">357</FONT> {<a name="line.357"></a> |
| <FONT color="green">358</FONT> if (n < 1)<a name="line.358"></a> |
| <FONT color="green">359</FONT> return "";<a name="line.359"></a> |
| <FONT color="green">360</FONT> <a name="line.360"></a> |
| <FONT color="green">361</FONT> char[] buf = new char[n];<a name="line.361"></a> |
| <FONT color="green">362</FONT> <a name="line.362"></a> |
| <FONT color="green">363</FONT> for (int i = 0; i < n; i++)<a name="line.363"></a> |
| <FONT color="green">364</FONT> {<a name="line.364"></a> |
| <FONT color="green">365</FONT> buf[i] = '0';<a name="line.365"></a> |
| <FONT color="green">366</FONT> }<a name="line.366"></a> |
| <FONT color="green">367</FONT> <a name="line.367"></a> |
| <FONT color="green">368</FONT> return new String(buf);<a name="line.368"></a> |
| <FONT color="green">369</FONT> }<a name="line.369"></a> |
| <FONT color="green">370</FONT> <a name="line.370"></a> |
| <FONT color="green">371</FONT> /**<a name="line.371"></a> |
| <FONT color="green">372</FONT> * Return a java object that's closest to the representation<a name="line.372"></a> |
| <FONT color="green">373</FONT> * that should be handed to an extension.<a name="line.373"></a> |
| <FONT color="green">374</FONT> *<a name="line.374"></a> |
| <FONT color="green">375</FONT> * @return The value of this XNumber as a Double object<a name="line.375"></a> |
| <FONT color="green">376</FONT> */<a name="line.376"></a> |
| <FONT color="green">377</FONT> public Object object()<a name="line.377"></a> |
| <FONT color="green">378</FONT> {<a name="line.378"></a> |
| <FONT color="green">379</FONT> if(null == m_obj)<a name="line.379"></a> |
| <FONT color="green">380</FONT> setObject(new Double(m_val));<a name="line.380"></a> |
| <FONT color="green">381</FONT> return m_obj;<a name="line.381"></a> |
| <FONT color="green">382</FONT> }<a name="line.382"></a> |
| <FONT color="green">383</FONT> <a name="line.383"></a> |
| <FONT color="green">384</FONT> /**<a name="line.384"></a> |
| <FONT color="green">385</FONT> * Tell if two objects are functionally equal.<a name="line.385"></a> |
| <FONT color="green">386</FONT> *<a name="line.386"></a> |
| <FONT color="green">387</FONT> * @param obj2 Object to compare this to<a name="line.387"></a> |
| <FONT color="green">388</FONT> *<a name="line.388"></a> |
| <FONT color="green">389</FONT> * @return true if the two objects are equal <a name="line.389"></a> |
| <FONT color="green">390</FONT> *<a name="line.390"></a> |
| <FONT color="green">391</FONT> * @throws javax.xml.transform.TransformerException<a name="line.391"></a> |
| <FONT color="green">392</FONT> */<a name="line.392"></a> |
| <FONT color="green">393</FONT> public boolean equals(XObject obj2)<a name="line.393"></a> |
| <FONT color="green">394</FONT> {<a name="line.394"></a> |
| <FONT color="green">395</FONT> <a name="line.395"></a> |
| <FONT color="green">396</FONT> // In order to handle the 'all' semantics of <a name="line.396"></a> |
| <FONT color="green">397</FONT> // nodeset comparisons, we always call the <a name="line.397"></a> |
| <FONT color="green">398</FONT> // nodeset function.<a name="line.398"></a> |
| <FONT color="green">399</FONT> int t = obj2.getType();<a name="line.399"></a> |
| <FONT color="green">400</FONT> try<a name="line.400"></a> |
| <FONT color="green">401</FONT> {<a name="line.401"></a> |
| <FONT color="green">402</FONT> if (t == XObject.CLASS_NODESET)<a name="line.402"></a> |
| <FONT color="green">403</FONT> return obj2.equals(this);<a name="line.403"></a> |
| <FONT color="green">404</FONT> else if(t == XObject.CLASS_BOOLEAN)<a name="line.404"></a> |
| <FONT color="green">405</FONT> return obj2.bool() == bool();<a name="line.405"></a> |
| <FONT color="green">406</FONT> else<a name="line.406"></a> |
| <FONT color="green">407</FONT> return m_val == obj2.num();<a name="line.407"></a> |
| <FONT color="green">408</FONT> }<a name="line.408"></a> |
| <FONT color="green">409</FONT> catch(javax.xml.transform.TransformerException te)<a name="line.409"></a> |
| <FONT color="green">410</FONT> {<a name="line.410"></a> |
| <FONT color="green">411</FONT> throw new org.apache.xml.utils.WrappedRuntimeException(te);<a name="line.411"></a> |
| <FONT color="green">412</FONT> }<a name="line.412"></a> |
| <FONT color="green">413</FONT> }<a name="line.413"></a> |
| <FONT color="green">414</FONT> <a name="line.414"></a> |
| <FONT color="green">415</FONT> /**<a name="line.415"></a> |
| <FONT color="green">416</FONT> * Tell if this expression returns a stable number that will not change during <a name="line.416"></a> |
| <FONT color="green">417</FONT> * iterations within the expression. This is used to determine if a proximity <a name="line.417"></a> |
| <FONT color="green">418</FONT> * position predicate can indicate that no more searching has to occur.<a name="line.418"></a> |
| <FONT color="green">419</FONT> * <a name="line.419"></a> |
| <FONT color="green">420</FONT> *<a name="line.420"></a> |
| <FONT color="green">421</FONT> * @return true if the expression represents a stable number.<a name="line.421"></a> |
| <FONT color="green">422</FONT> */<a name="line.422"></a> |
| <FONT color="green">423</FONT> public boolean isStableNumber()<a name="line.423"></a> |
| <FONT color="green">424</FONT> {<a name="line.424"></a> |
| <FONT color="green">425</FONT> return true;<a name="line.425"></a> |
| <FONT color="green">426</FONT> }<a name="line.426"></a> |
| <FONT color="green">427</FONT> <a name="line.427"></a> |
| <FONT color="green">428</FONT> /**<a name="line.428"></a> |
| <FONT color="green">429</FONT> * @see org.apache.xpath.XPathVisitable#callVisitors(ExpressionOwner, XPathVisitor)<a name="line.429"></a> |
| <FONT color="green">430</FONT> */<a name="line.430"></a> |
| <FONT color="green">431</FONT> public void callVisitors(ExpressionOwner owner, XPathVisitor visitor)<a name="line.431"></a> |
| <FONT color="green">432</FONT> {<a name="line.432"></a> |
| <FONT color="green">433</FONT> visitor.visitNumberLiteral(owner, this);<a name="line.433"></a> |
| <FONT color="green">434</FONT> }<a name="line.434"></a> |
| <FONT color="green">435</FONT> <a name="line.435"></a> |
| <FONT color="green">436</FONT> <a name="line.436"></a> |
| <FONT color="green">437</FONT> }<a name="line.437"></a> |
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| </PRE> |
| </BODY> |
| </HTML> |
