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<pre><span class="sourceLineNo">001</span>package serp.bytecode.lowlevel;<a name="line.1"></a>
<span class="sourceLineNo">002</span><a name="line.2"></a>
<span class="sourceLineNo">003</span>import java.io.*;<a name="line.3"></a>
<span class="sourceLineNo">004</span>import java.util.*;<a name="line.4"></a>
<span class="sourceLineNo">005</span><a name="line.5"></a>
<span class="sourceLineNo">006</span>import serp.bytecode.visitor.*;<a name="line.6"></a>
<span class="sourceLineNo">007</span>import serp.util.*;<a name="line.7"></a>
<span class="sourceLineNo">008</span><a name="line.8"></a>
<span class="sourceLineNo">009</span>/**<a name="line.9"></a>
<span class="sourceLineNo">010</span> * A bytecode constant pool, containing entries for all strings,<a name="line.10"></a>
<span class="sourceLineNo">011</span> * constants, classes, etc referenced in the class structure and method<a name="line.11"></a>
<span class="sourceLineNo">012</span> * opcodes. In keeping with the low-level bytecode representation, all pool<a name="line.12"></a>
<span class="sourceLineNo">013</span> * indexes are 1-based and {@link LongEntry}s and {@link DoubleEntry}s each<a name="line.13"></a>
<span class="sourceLineNo">014</span> * occupy two indexes in the pool.<a name="line.14"></a>
<span class="sourceLineNo">015</span> *<a name="line.15"></a>
<span class="sourceLineNo">016</span> * @author Abe White<a name="line.16"></a>
<span class="sourceLineNo">017</span> */<a name="line.17"></a>
<span class="sourceLineNo">018</span>public class ConstantPool implements VisitAcceptor {<a name="line.18"></a>
<span class="sourceLineNo">019</span> private List _entries = new ArrayList(50);<a name="line.19"></a>
<span class="sourceLineNo">020</span> private Map _lookup = new HashMap(50);<a name="line.20"></a>
<span class="sourceLineNo">021</span><a name="line.21"></a>
<span class="sourceLineNo">022</span> /**<a name="line.22"></a>
<span class="sourceLineNo">023</span> * Default constructor.<a name="line.23"></a>
<span class="sourceLineNo">024</span> */<a name="line.24"></a>
<span class="sourceLineNo">025</span> public ConstantPool() {<a name="line.25"></a>
<span class="sourceLineNo">026</span> }<a name="line.26"></a>
<span class="sourceLineNo">027</span><a name="line.27"></a>
<span class="sourceLineNo">028</span> /**<a name="line.28"></a>
<span class="sourceLineNo">029</span> * Return all the entries in the pool.<a name="line.29"></a>
<span class="sourceLineNo">030</span> */<a name="line.30"></a>
<span class="sourceLineNo">031</span> public Entry[] getEntries() {<a name="line.31"></a>
<span class="sourceLineNo">032</span> List entries = new ArrayList(_entries.size());<a name="line.32"></a>
<span class="sourceLineNo">033</span> Entry entry;<a name="line.33"></a>
<span class="sourceLineNo">034</span> for (Iterator itr = _entries.iterator(); itr.hasNext();) {<a name="line.34"></a>
<span class="sourceLineNo">035</span> entry = (Entry) itr.next();<a name="line.35"></a>
<span class="sourceLineNo">036</span> if (entry != null)<a name="line.36"></a>
<span class="sourceLineNo">037</span> entries.add(entry);<a name="line.37"></a>
<span class="sourceLineNo">038</span> }<a name="line.38"></a>
<span class="sourceLineNo">039</span> return (Entry[]) entries.toArray(new Entry[entries.size()]);<a name="line.39"></a>
<span class="sourceLineNo">040</span> }<a name="line.40"></a>
<span class="sourceLineNo">041</span><a name="line.41"></a>
<span class="sourceLineNo">042</span> /**<a name="line.42"></a>
<span class="sourceLineNo">043</span> * Retrieve the entry at the specified 1-based index.<a name="line.43"></a>
<span class="sourceLineNo">044</span> *<a name="line.44"></a>
<span class="sourceLineNo">045</span> * @throws IndexOutOfBoundsException if index is invalid,<a name="line.45"></a>
<span class="sourceLineNo">046</span> * including the case that it points to the second slot of a<a name="line.46"></a>
<span class="sourceLineNo">047</span> * long or double entry<a name="line.47"></a>
<span class="sourceLineNo">048</span> */<a name="line.48"></a>
<span class="sourceLineNo">049</span> public Entry getEntry(int index) {<a name="line.49"></a>
<span class="sourceLineNo">050</span> Entry entry = (Entry) _entries.get(index - 1);<a name="line.50"></a>
<span class="sourceLineNo">051</span> if (entry == null)<a name="line.51"></a>
<span class="sourceLineNo">052</span> throw new IndexOutOfBoundsException("index = " + index);<a name="line.52"></a>
<span class="sourceLineNo">053</span> return entry;<a name="line.53"></a>
<span class="sourceLineNo">054</span> }<a name="line.54"></a>
<span class="sourceLineNo">055</span><a name="line.55"></a>
<span class="sourceLineNo">056</span> /**<a name="line.56"></a>
<span class="sourceLineNo">057</span> * Return the index of the given entry, or 0 if it is not in the pool.<a name="line.57"></a>
<span class="sourceLineNo">058</span> */<a name="line.58"></a>
<span class="sourceLineNo">059</span> public int indexOf(Entry entry) {<a name="line.59"></a>
<span class="sourceLineNo">060</span> if (entry == null || entry.getPool() != this)<a name="line.60"></a>
<span class="sourceLineNo">061</span> return 0;<a name="line.61"></a>
<span class="sourceLineNo">062</span> return entry.getIndex();<a name="line.62"></a>
<span class="sourceLineNo">063</span> }<a name="line.63"></a>
<span class="sourceLineNo">064</span><a name="line.64"></a>
<span class="sourceLineNo">065</span> /**<a name="line.65"></a>
<span class="sourceLineNo">066</span> * Add an entry to the pool.<a name="line.66"></a>
<span class="sourceLineNo">067</span> *<a name="line.67"></a>
<span class="sourceLineNo">068</span> * @return the index at which the entry was added<a name="line.68"></a>
<span class="sourceLineNo">069</span> */<a name="line.69"></a>
<span class="sourceLineNo">070</span> public int addEntry(Entry entry) {<a name="line.70"></a>
<span class="sourceLineNo">071</span> if (entry.getPool() != this)<a name="line.71"></a>
<span class="sourceLineNo">072</span> addEntry(getKey(entry), entry);<a name="line.72"></a>
<span class="sourceLineNo">073</span> return entry.getIndex();<a name="line.73"></a>
<span class="sourceLineNo">074</span> }<a name="line.74"></a>
<span class="sourceLineNo">075</span><a name="line.75"></a>
<span class="sourceLineNo">076</span> /**<a name="line.76"></a>
<span class="sourceLineNo">077</span> * Add an entry to the pool using the given key.<a name="line.77"></a>
<span class="sourceLineNo">078</span> */<a name="line.78"></a>
<span class="sourceLineNo">079</span> private int addEntry(Object key, Entry entry) {<a name="line.79"></a>
<span class="sourceLineNo">080</span> entry.setPool(this);<a name="line.80"></a>
<span class="sourceLineNo">081</span> _entries.add(entry);<a name="line.81"></a>
<span class="sourceLineNo">082</span> entry.setIndex(_entries.size());<a name="line.82"></a>
<span class="sourceLineNo">083</span> _lookup.put(key, entry);<a name="line.83"></a>
<span class="sourceLineNo">084</span> if (entry.isWide())<a name="line.84"></a>
<span class="sourceLineNo">085</span> _entries.add(null);<a name="line.85"></a>
<span class="sourceLineNo">086</span> return entry.getIndex();<a name="line.86"></a>
<span class="sourceLineNo">087</span> }<a name="line.87"></a>
<span class="sourceLineNo">088</span><a name="line.88"></a>
<span class="sourceLineNo">089</span> /**<a name="line.89"></a>
<span class="sourceLineNo">090</span> * Remove the given entry from the pool.<a name="line.90"></a>
<span class="sourceLineNo">091</span> *<a name="line.91"></a>
<span class="sourceLineNo">092</span> * @return false if the entry is not in the pool, true otherwise<a name="line.92"></a>
<span class="sourceLineNo">093</span> */<a name="line.93"></a>
<span class="sourceLineNo">094</span> public boolean removeEntry(Entry entry) {<a name="line.94"></a>
<span class="sourceLineNo">095</span> if (entry == null || entry.getPool() != this)<a name="line.95"></a>
<span class="sourceLineNo">096</span> return false;<a name="line.96"></a>
<span class="sourceLineNo">097</span><a name="line.97"></a>
<span class="sourceLineNo">098</span> int index = entry.getIndex() - 1;<a name="line.98"></a>
<span class="sourceLineNo">099</span> entry.setPool(null);<a name="line.99"></a>
<span class="sourceLineNo">100</span> entry.setIndex(0);<a name="line.100"></a>
<span class="sourceLineNo">101</span> _entries.remove(index);<a name="line.101"></a>
<span class="sourceLineNo">102</span> if (entry.isWide())<a name="line.102"></a>
<span class="sourceLineNo">103</span> _entries.remove(index);<a name="line.103"></a>
<span class="sourceLineNo">104</span> _lookup.remove(getKey(entry));<a name="line.104"></a>
<span class="sourceLineNo">105</span><a name="line.105"></a>
<span class="sourceLineNo">106</span> // rehash all the entries after the removed one with their new index<a name="line.106"></a>
<span class="sourceLineNo">107</span> Object key;<a name="line.107"></a>
<span class="sourceLineNo">108</span> for (int i = index; i < _entries.size(); i++) {<a name="line.108"></a>
<span class="sourceLineNo">109</span> entry = (Entry) _entries.get(i);<a name="line.109"></a>
<span class="sourceLineNo">110</span> if (entry != null) {<a name="line.110"></a>
<span class="sourceLineNo">111</span> key = getKey(entry);<a name="line.111"></a>
<span class="sourceLineNo">112</span> _lookup.remove(key);<a name="line.112"></a>
<span class="sourceLineNo">113</span> entry.setIndex(i + 1);<a name="line.113"></a>
<span class="sourceLineNo">114</span> _lookup.put(key, entry);<a name="line.114"></a>
<span class="sourceLineNo">115</span> }<a name="line.115"></a>
<span class="sourceLineNo">116</span> }<a name="line.116"></a>
<span class="sourceLineNo">117</span> return true;<a name="line.117"></a>
<span class="sourceLineNo">118</span> }<a name="line.118"></a>
<span class="sourceLineNo">119</span><a name="line.119"></a>
<span class="sourceLineNo">120</span> /**<a name="line.120"></a>
<span class="sourceLineNo">121</span> * Clear all entries from the pool.<a name="line.121"></a>
<span class="sourceLineNo">122</span> */<a name="line.122"></a>
<span class="sourceLineNo">123</span> public void clear() {<a name="line.123"></a>
<span class="sourceLineNo">124</span> Entry entry;<a name="line.124"></a>
<span class="sourceLineNo">125</span> for (Iterator itr = _entries.iterator(); itr.hasNext();) {<a name="line.125"></a>
<span class="sourceLineNo">126</span> entry = (Entry) itr.next();<a name="line.126"></a>
<span class="sourceLineNo">127</span> if (entry != null) {<a name="line.127"></a>
<span class="sourceLineNo">128</span> entry.setPool(null);<a name="line.128"></a>
<span class="sourceLineNo">129</span> entry.setIndex(0);<a name="line.129"></a>
<span class="sourceLineNo">130</span> }<a name="line.130"></a>
<span class="sourceLineNo">131</span> }<a name="line.131"></a>
<span class="sourceLineNo">132</span> _entries.clear();<a name="line.132"></a>
<span class="sourceLineNo">133</span> _lookup.clear();<a name="line.133"></a>
<span class="sourceLineNo">134</span> }<a name="line.134"></a>
<span class="sourceLineNo">135</span><a name="line.135"></a>
<span class="sourceLineNo">136</span> /**<a name="line.136"></a>
<span class="sourceLineNo">137</span> * Return the number of places occupied in the pool, including the fact<a name="line.137"></a>
<span class="sourceLineNo">138</span> * that long and double entries occupy two places.<a name="line.138"></a>
<span class="sourceLineNo">139</span> */<a name="line.139"></a>
<span class="sourceLineNo">140</span> public int size() {<a name="line.140"></a>
<span class="sourceLineNo">141</span> return _entries.size();<a name="line.141"></a>
<span class="sourceLineNo">142</span> }<a name="line.142"></a>
<span class="sourceLineNo">143</span><a name="line.143"></a>
<span class="sourceLineNo">144</span> /**<a name="line.144"></a>
<span class="sourceLineNo">145</span> * Return the index of the {@link UTF8Entry} with the given value, or<a name="line.145"></a>
<span class="sourceLineNo">146</span> * 0 if it does not exist.<a name="line.146"></a>
<span class="sourceLineNo">147</span> *<a name="line.147"></a>
<span class="sourceLineNo">148</span> * @param add if true, the entry will be added if it does not<a name="line.148"></a>
<span class="sourceLineNo">149</span> * already exist, and the new entry's index returned<a name="line.149"></a>
<span class="sourceLineNo">150</span> */<a name="line.150"></a>
<span class="sourceLineNo">151</span> public int findUTF8Entry(String value, boolean add) {<a name="line.151"></a>
<span class="sourceLineNo">152</span> if (value == null) {<a name="line.152"></a>
<span class="sourceLineNo">153</span> if (add)<a name="line.153"></a>
<span class="sourceLineNo">154</span> throw new NullPointerException("value = null");<a name="line.154"></a>
<span class="sourceLineNo">155</span> return 0;<a name="line.155"></a>
<span class="sourceLineNo">156</span> }<a name="line.156"></a>
<span class="sourceLineNo">157</span><a name="line.157"></a>
<span class="sourceLineNo">158</span> int index = find(value);<a name="line.158"></a>
<span class="sourceLineNo">159</span> if (!add || index > 0)<a name="line.159"></a>
<span class="sourceLineNo">160</span> return index;<a name="line.160"></a>
<span class="sourceLineNo">161</span> return addEntry(value, new UTF8Entry(value));<a name="line.161"></a>
<span class="sourceLineNo">162</span> }<a name="line.162"></a>
<span class="sourceLineNo">163</span><a name="line.163"></a>
<span class="sourceLineNo">164</span> /**<a name="line.164"></a>
<span class="sourceLineNo">165</span> * Return the constant pool index of the {@link DoubleEntry} for the given<a name="line.165"></a>
<span class="sourceLineNo">166</span> * value, or 0 if it does not exist.<a name="line.166"></a>
<span class="sourceLineNo">167</span> *<a name="line.167"></a>
<span class="sourceLineNo">168</span> * @param value the value to find<a name="line.168"></a>
<span class="sourceLineNo">169</span> * @param add if true, the entry will be added if it does not<a name="line.169"></a>
<span class="sourceLineNo">170</span> * already exist, and the new entry's index returned<a name="line.170"></a>
<span class="sourceLineNo">171</span> */<a name="line.171"></a>
<span class="sourceLineNo">172</span> public int findDoubleEntry(double value, boolean add) {<a name="line.172"></a>
<span class="sourceLineNo">173</span> Double key = new Double(value);<a name="line.173"></a>
<span class="sourceLineNo">174</span> int index = find(key);<a name="line.174"></a>
<span class="sourceLineNo">175</span> if (!add || (index > 0))<a name="line.175"></a>
<span class="sourceLineNo">176</span> return index;<a name="line.176"></a>
<span class="sourceLineNo">177</span> return addEntry(key, new DoubleEntry(value));<a name="line.177"></a>
<span class="sourceLineNo">178</span> }<a name="line.178"></a>
<span class="sourceLineNo">179</span><a name="line.179"></a>
<span class="sourceLineNo">180</span> /**<a name="line.180"></a>
<span class="sourceLineNo">181</span> * Return the constant pool index of the {@link FloatEntry} for the given<a name="line.181"></a>
<span class="sourceLineNo">182</span> * value, or 0 if it does not exist.<a name="line.182"></a>
<span class="sourceLineNo">183</span> *<a name="line.183"></a>
<span class="sourceLineNo">184</span> * @param value the value to find<a name="line.184"></a>
<span class="sourceLineNo">185</span> * @param add if true, the entry will be added if it does not<a name="line.185"></a>
<span class="sourceLineNo">186</span> * already exist, and the new entry's index returned<a name="line.186"></a>
<span class="sourceLineNo">187</span> */<a name="line.187"></a>
<span class="sourceLineNo">188</span> public int findFloatEntry(float value, boolean add) {<a name="line.188"></a>
<span class="sourceLineNo">189</span> Float key = new Float(value);<a name="line.189"></a>
<span class="sourceLineNo">190</span> int index = find(key);<a name="line.190"></a>
<span class="sourceLineNo">191</span> if (!add || index > 0)<a name="line.191"></a>
<span class="sourceLineNo">192</span> return index;<a name="line.192"></a>
<span class="sourceLineNo">193</span> return addEntry(key, new FloatEntry(value));<a name="line.193"></a>
<span class="sourceLineNo">194</span> }<a name="line.194"></a>
<span class="sourceLineNo">195</span><a name="line.195"></a>
<span class="sourceLineNo">196</span> /**<a name="line.196"></a>
<span class="sourceLineNo">197</span> * Return the constant pool index of the {@link IntEntry} for the given<a name="line.197"></a>
<span class="sourceLineNo">198</span> * value, or 0 if it does not exist.<a name="line.198"></a>
<span class="sourceLineNo">199</span> *<a name="line.199"></a>
<span class="sourceLineNo">200</span> * @param value the value to find<a name="line.200"></a>
<span class="sourceLineNo">201</span> * @param add if true, the entry will be added if it does not<a name="line.201"></a>
<span class="sourceLineNo">202</span> * already exist, and the new entry's index returned<a name="line.202"></a>
<span class="sourceLineNo">203</span> */<a name="line.203"></a>
<span class="sourceLineNo">204</span> public int findIntEntry(int value, boolean add) {<a name="line.204"></a>
<span class="sourceLineNo">205</span> Integer key = Numbers.valueOf(value);<a name="line.205"></a>
<span class="sourceLineNo">206</span> int index = find(key);<a name="line.206"></a>
<span class="sourceLineNo">207</span> if (!add || index > 0)<a name="line.207"></a>
<span class="sourceLineNo">208</span> return index;<a name="line.208"></a>
<span class="sourceLineNo">209</span> return addEntry(key, new IntEntry(value));<a name="line.209"></a>
<span class="sourceLineNo">210</span> }<a name="line.210"></a>
<span class="sourceLineNo">211</span><a name="line.211"></a>
<span class="sourceLineNo">212</span> /**<a name="line.212"></a>
<span class="sourceLineNo">213</span> * Return the constant pool index of the {@link LongEntry} for the given<a name="line.213"></a>
<span class="sourceLineNo">214</span> * value, or 0 if it does not exist.<a name="line.214"></a>
<span class="sourceLineNo">215</span> *<a name="line.215"></a>
<span class="sourceLineNo">216</span> * @param value the value to find<a name="line.216"></a>
<span class="sourceLineNo">217</span> * @param add if true, the entry will be added if it does not<a name="line.217"></a>
<span class="sourceLineNo">218</span> * already exist, and the new entry's index returned<a name="line.218"></a>
<span class="sourceLineNo">219</span> */<a name="line.219"></a>
<span class="sourceLineNo">220</span> public int findLongEntry(long value, boolean add) {<a name="line.220"></a>
<span class="sourceLineNo">221</span> Long key = Numbers.valueOf(value);<a name="line.221"></a>
<span class="sourceLineNo">222</span> int index = find(key);<a name="line.222"></a>
<span class="sourceLineNo">223</span> if (!add || index > 0)<a name="line.223"></a>
<span class="sourceLineNo">224</span> return index;<a name="line.224"></a>
<span class="sourceLineNo">225</span> return addEntry(key, new LongEntry(value));<a name="line.225"></a>
<span class="sourceLineNo">226</span> }<a name="line.226"></a>
<span class="sourceLineNo">227</span><a name="line.227"></a>
<span class="sourceLineNo">228</span> /**<a name="line.228"></a>
<span class="sourceLineNo">229</span> * Return the constant pool index of the {@link StringEntry} for the given<a name="line.229"></a>
<span class="sourceLineNo">230</span> * string value, or 0 if it does not exist.<a name="line.230"></a>
<span class="sourceLineNo">231</span> *<a name="line.231"></a>
<span class="sourceLineNo">232</span> * @param value the value to find<a name="line.232"></a>
<span class="sourceLineNo">233</span> * @param add if true, the entry will be added if it does not<a name="line.233"></a>
<span class="sourceLineNo">234</span> * already exist, and the new entry's index returned<a name="line.234"></a>
<span class="sourceLineNo">235</span> */<a name="line.235"></a>
<span class="sourceLineNo">236</span> public int findStringEntry(String value, boolean add) {<a name="line.236"></a>
<span class="sourceLineNo">237</span> int valueIndex = findUTF8Entry(value, add);<a name="line.237"></a>
<span class="sourceLineNo">238</span> if (valueIndex == 0)<a name="line.238"></a>
<span class="sourceLineNo">239</span> return 0;<a name="line.239"></a>
<span class="sourceLineNo">240</span><a name="line.240"></a>
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<span class="sourceLineNo">265</span> return addEntry(key, new ClassEntry(nameIndex));<a name="line.265"></a>
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<span class="sourceLineNo">268</span> /**<a name="line.268"></a>
<span class="sourceLineNo">269</span> * Return the constant pool index of the {@link NameAndTypeEntry} for the<a name="line.269"></a>
<span class="sourceLineNo">270</span> * given name and descriptor, or 0 if it does not exist.<a name="line.270"></a>
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<span class="sourceLineNo">274</span> * @param add if true, the entry will be added if it does not<a name="line.274"></a>
<span class="sourceLineNo">275</span> * already exist, and the new entry's index returned<a name="line.275"></a>
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<span class="sourceLineNo">284</span><a name="line.284"></a>
<span class="sourceLineNo">285</span> NameAndTypeKey key = new NameAndTypeKey(nameIndex, descIndex);<a name="line.285"></a>
<span class="sourceLineNo">286</span> int index = find(key);<a name="line.286"></a>
<span class="sourceLineNo">287</span> if (!add || index > 0)<a name="line.287"></a>
<span class="sourceLineNo">288</span> return index;<a name="line.288"></a>
<span class="sourceLineNo">289</span> return addEntry(key, new NameAndTypeEntry(nameIndex, descIndex));<a name="line.289"></a>
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<span class="sourceLineNo">291</span><a name="line.291"></a>
<span class="sourceLineNo">292</span> /**<a name="line.292"></a>
<span class="sourceLineNo">293</span> * Return the constant pool index of the {@link FieldEntry} for the<a name="line.293"></a>
<span class="sourceLineNo">294</span> * given name, descriptor, and owner class name.<a name="line.294"></a>
<span class="sourceLineNo">295</span> *<a name="line.295"></a>
<span class="sourceLineNo">296</span> * @param owner the name of the field's owning class in internal form<a name="line.296"></a>
<span class="sourceLineNo">297</span> * @param name the name of the field<a name="line.297"></a>
<span class="sourceLineNo">298</span> * @param desc the descriptor of the field in internal form<a name="line.298"></a>
<span class="sourceLineNo">299</span> * @param add if true, the entry will be added if it does not<a name="line.299"></a>
<span class="sourceLineNo">300</span> * already exist, and the new entry's index returned<a name="line.300"></a>
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<span class="sourceLineNo">303</span> boolean add) {<a name="line.303"></a>
<span class="sourceLineNo">304</span> return findComplexEntry(owner, name, desc, Entry.FIELD, add);<a name="line.304"></a>
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<span class="sourceLineNo">306</span><a name="line.306"></a>
<span class="sourceLineNo">307</span> /**<a name="line.307"></a>
<span class="sourceLineNo">308</span> * Return the constant pool index of the {@link MethodEntry} for the<a name="line.308"></a>
<span class="sourceLineNo">309</span> * given name, descriptor, and owner class name.<a name="line.309"></a>
<span class="sourceLineNo">310</span> *<a name="line.310"></a>
<span class="sourceLineNo">311</span> * @param owner the name of the method's owning class in internal form<a name="line.311"></a>
<span class="sourceLineNo">312</span> * @param name the name of the method<a name="line.312"></a>
<span class="sourceLineNo">313</span> * @param desc the descriptor of the method in internal form<a name="line.313"></a>
<span class="sourceLineNo">314</span> * @param add if true, the entry will be added if it does not<a name="line.314"></a>
<span class="sourceLineNo">315</span> * already exist, and the new entry's index returned<a name="line.315"></a>
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<span class="sourceLineNo">318</span> boolean add) {<a name="line.318"></a>
<span class="sourceLineNo">319</span> return findComplexEntry(owner, name, desc, Entry.METHOD, add);<a name="line.319"></a>
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<span class="sourceLineNo">321</span><a name="line.321"></a>
<span class="sourceLineNo">322</span> /**<a name="line.322"></a>
<span class="sourceLineNo">323</span> * Return the constant pool index of the {@link InterfaceMethodEntry} for<a name="line.323"></a>
<span class="sourceLineNo">324</span> * the given name, descriptor, and owner class name.<a name="line.324"></a>
<span class="sourceLineNo">325</span> *<a name="line.325"></a>
<span class="sourceLineNo">326</span> * @param owner the name of the method's owning class in internal form<a name="line.326"></a>
<span class="sourceLineNo">327</span> * @param name the name of the method<a name="line.327"></a>
<span class="sourceLineNo">328</span> * @param desc the descriptor of the method in internal form<a name="line.328"></a>
<span class="sourceLineNo">329</span> * @param add if true, the entry will be added if it does not<a name="line.329"></a>
<span class="sourceLineNo">330</span> * already exist, and the new entry's index returned<a name="line.330"></a>
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<span class="sourceLineNo">333</span> boolean add) {<a name="line.333"></a>
<span class="sourceLineNo">334</span> return findComplexEntry(owner, name, desc, Entry.INTERFACEMETHOD, add);<a name="line.334"></a>
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<span class="sourceLineNo">336</span><a name="line.336"></a>
<span class="sourceLineNo">337</span> public int findInvokeDynamicEntry(int bootstrapMethodIndex, String name, String desc, boolean add) { <a name="line.337"></a>
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<span class="sourceLineNo">341</span> <a name="line.341"></a>
<span class="sourceLineNo">342</span> Object key = new InvokeDynamicKey(bootstrapMethodIndex, descIndex);<a name="line.342"></a>
<span class="sourceLineNo">343</span> int index = find(key);<a name="line.343"></a>
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<span class="sourceLineNo">346</span> <a name="line.346"></a>
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<span class="sourceLineNo">350</span> <a name="line.350"></a>
<span class="sourceLineNo">351</span> /**<a name="line.351"></a>
<span class="sourceLineNo">352</span> * Return the constant pool index of the {@link ComplexEntry} for the<a name="line.352"></a>
<span class="sourceLineNo">353</span> * given name, descriptor, and owner class name.<a name="line.353"></a>
<span class="sourceLineNo">354</span> *<a name="line.354"></a>
<span class="sourceLineNo">355</span> * @param owner the name of the owning class in internal form<a name="line.355"></a>
<span class="sourceLineNo">356</span> * @param name the name of the entity<a name="line.356"></a>
<span class="sourceLineNo">357</span> * @param desc the descriptor of the entity in internal form<a name="line.357"></a>
<span class="sourceLineNo">358</span> * @param type the type of entry: field, method, interface method<a name="line.358"></a>
<span class="sourceLineNo">359</span> * @param add if true, the entry will be added if it does not<a name="line.359"></a>
<span class="sourceLineNo">360</span> * already exist, and the new entry's index returned<a name="line.360"></a>
<span class="sourceLineNo">361</span> */<a name="line.361"></a>
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<span class="sourceLineNo">363</span> int type, boolean add) {<a name="line.363"></a>
<span class="sourceLineNo">364</span> int classIndex = findClassEntry(owner, add);<a name="line.364"></a>
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<span class="sourceLineNo">371</span> Object key = null;<a name="line.371"></a>
<span class="sourceLineNo">372</span> switch (type) {<a name="line.372"></a>
<span class="sourceLineNo">373</span> case Entry.FIELD:<a name="line.373"></a>
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<span class="sourceLineNo">376</span> case Entry.METHOD:<a name="line.376"></a>
<span class="sourceLineNo">377</span> key = new MethodKey(classIndex, descIndex);<a name="line.377"></a>
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<span class="sourceLineNo">380</span> key = new InterfaceMethodKey(classIndex, descIndex);<a name="line.380"></a>
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<span class="sourceLineNo">386</span><a name="line.386"></a>
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<span class="sourceLineNo">392</span> case Entry.METHOD:<a name="line.392"></a>
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<span class="sourceLineNo">403</span> visit.enterConstantPool(this);<a name="line.403"></a>
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<span class="sourceLineNo">410</span> visit.enterEntry(entry);<a name="line.410"></a>
<span class="sourceLineNo">411</span> entry.acceptVisit(visit);<a name="line.411"></a>
<span class="sourceLineNo">412</span> visit.exitEntry(entry);<a name="line.412"></a>
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<span class="sourceLineNo">414</span> visit.exitConstantPool(this);<a name="line.414"></a>
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<span class="sourceLineNo">417</span> /**<a name="line.417"></a>
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<span class="sourceLineNo">419</span> */<a name="line.419"></a>
<span class="sourceLineNo">420</span> public void read(DataInput in) throws IOException {<a name="line.420"></a>
<span class="sourceLineNo">421</span> clear();<a name="line.421"></a>
<span class="sourceLineNo">422</span><a name="line.422"></a>
<span class="sourceLineNo">423</span> int entryCount = in.readUnsignedShort();<a name="line.423"></a>
<span class="sourceLineNo">424</span> Entry entry;<a name="line.424"></a>
<span class="sourceLineNo">425</span> for (int i = 1; i < entryCount; i++) {<a name="line.425"></a>
<span class="sourceLineNo">426</span> entry = Entry.read(in);<a name="line.426"></a>
<span class="sourceLineNo">427</span> addEntry(entry);<a name="line.427"></a>
<span class="sourceLineNo">428</span> if (entry.isWide())<a name="line.428"></a>
<span class="sourceLineNo">429</span> i++;<a name="line.429"></a>
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<span class="sourceLineNo">431</span> }<a name="line.431"></a>
<span class="sourceLineNo">432</span><a name="line.432"></a>
<span class="sourceLineNo">433</span> /**<a name="line.433"></a>
<span class="sourceLineNo">434</span> * Write the constant pool to the given bytecode stream.<a name="line.434"></a>
<span class="sourceLineNo">435</span> */<a name="line.435"></a>
<span class="sourceLineNo">436</span> public void write(DataOutput out) throws IOException {<a name="line.436"></a>
<span class="sourceLineNo">437</span> out.writeShort(_entries.size() + 1);<a name="line.437"></a>
<span class="sourceLineNo">438</span><a name="line.438"></a>
<span class="sourceLineNo">439</span> Entry entry;<a name="line.439"></a>
<span class="sourceLineNo">440</span> for (Iterator itr = _entries.iterator(); itr.hasNext();) {<a name="line.440"></a>
<span class="sourceLineNo">441</span> entry = (Entry) itr.next();<a name="line.441"></a>
<span class="sourceLineNo">442</span> if (entry != null)<a name="line.442"></a>
<span class="sourceLineNo">443</span> Entry.write(entry, out);<a name="line.443"></a>
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<span class="sourceLineNo">445</span> }<a name="line.445"></a>
<span class="sourceLineNo">446</span><a name="line.446"></a>
<span class="sourceLineNo">447</span> /**<a name="line.447"></a>
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<span class="sourceLineNo">449</span> */<a name="line.449"></a>
<span class="sourceLineNo">450</span> void modifyEntry(Object origKey, Entry entry) {<a name="line.450"></a>
<span class="sourceLineNo">451</span> _lookup.remove(origKey);<a name="line.451"></a>
<span class="sourceLineNo">452</span> _lookup.put(getKey(entry), entry);<a name="line.452"></a>
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<span class="sourceLineNo">454</span><a name="line.454"></a>
<span class="sourceLineNo">455</span> /**<a name="line.455"></a>
<span class="sourceLineNo">456</span> * Returns the constant pool index of the entry with the given key.<a name="line.456"></a>
<span class="sourceLineNo">457</span> */<a name="line.457"></a>
<span class="sourceLineNo">458</span> private int find(Object key) {<a name="line.458"></a>
<span class="sourceLineNo">459</span> Entry entry = (Entry) _lookup.get(key);<a name="line.459"></a>
<span class="sourceLineNo">460</span> if (entry == null)<a name="line.460"></a>
<span class="sourceLineNo">461</span> return 0;<a name="line.461"></a>
<span class="sourceLineNo">462</span> return entry.getIndex();<a name="line.462"></a>
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<span class="sourceLineNo">464</span><a name="line.464"></a>
<span class="sourceLineNo">465</span> /**<a name="line.465"></a>
<span class="sourceLineNo">466</span> * Return the hash key used for the specified entry.<a name="line.466"></a>
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<span class="sourceLineNo">468</span> static Object getKey(Entry entry) {<a name="line.468"></a>
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<span class="sourceLineNo">470</span> case Entry.CLASS:<a name="line.470"></a>
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<span class="sourceLineNo">476</span> MethodEntry me = (MethodEntry) entry;<a name="line.476"></a>
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<span class="sourceLineNo">478</span> case Entry.INTERFACEMETHOD:<a name="line.478"></a>
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<span class="sourceLineNo">480</span> return new InterfaceMethodKey(ime.getClassIndex(),<a name="line.480"></a>
<span class="sourceLineNo">481</span> ime.getNameAndTypeIndex());<a name="line.481"></a>
<span class="sourceLineNo">482</span> case Entry.INVOKEDYNAMIC:<a name="line.482"></a>
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<span class="sourceLineNo">485</span> case Entry.STRING:<a name="line.485"></a>
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<span class="sourceLineNo">487</span> case Entry.INT:<a name="line.487"></a>
<span class="sourceLineNo">488</span> case Entry.FLOAT:<a name="line.488"></a>
<span class="sourceLineNo">489</span> case Entry.LONG:<a name="line.489"></a>
<span class="sourceLineNo">490</span> case Entry.DOUBLE:<a name="line.490"></a>
<span class="sourceLineNo">491</span> case Entry.UTF8:<a name="line.491"></a>
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<span class="sourceLineNo">493</span> case Entry.NAMEANDTYPE:<a name="line.493"></a>
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<span class="sourceLineNo">496</span> nte.getDescriptorIndex());<a name="line.496"></a>
<span class="sourceLineNo">497</span> default:<a name="line.497"></a>
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<span class="sourceLineNo">501</span><a name="line.501"></a>
<span class="sourceLineNo">502</span> /**<a name="line.502"></a>
<span class="sourceLineNo">503</span> * Base class key for entries with one ptr to another entry.<a name="line.503"></a>
<span class="sourceLineNo">504</span> */<a name="line.504"></a>
<span class="sourceLineNo">505</span> private static abstract class PtrKey {<a name="line.505"></a>
<span class="sourceLineNo">506</span> private final int _index;<a name="line.506"></a>
<span class="sourceLineNo">507</span><a name="line.507"></a>
<span class="sourceLineNo">508</span> public PtrKey(int index) {<a name="line.508"></a>
<span class="sourceLineNo">509</span> _index = index;<a name="line.509"></a>
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<span class="sourceLineNo">511</span><a name="line.511"></a>
<span class="sourceLineNo">512</span> public int hashCode() {<a name="line.512"></a>
<span class="sourceLineNo">513</span> return _index;<a name="line.513"></a>
<span class="sourceLineNo">514</span> }<a name="line.514"></a>
<span class="sourceLineNo">515</span><a name="line.515"></a>
<span class="sourceLineNo">516</span> public boolean equals(Object other) {<a name="line.516"></a>
<span class="sourceLineNo">517</span> if (other == this)<a name="line.517"></a>
<span class="sourceLineNo">518</span> return true;<a name="line.518"></a>
<span class="sourceLineNo">519</span> if (other.getClass() != getClass())<a name="line.519"></a>
<span class="sourceLineNo">520</span> return false;<a name="line.520"></a>
<span class="sourceLineNo">521</span> return ((PtrKey) other)._index == _index;<a name="line.521"></a>
<span class="sourceLineNo">522</span> }<a name="line.522"></a>
<span class="sourceLineNo">523</span> }<a name="line.523"></a>
<span class="sourceLineNo">524</span><a name="line.524"></a>
<span class="sourceLineNo">525</span> /**<a name="line.525"></a>
<span class="sourceLineNo">526</span> * Key for string entries.<a name="line.526"></a>
<span class="sourceLineNo">527</span> */<a name="line.527"></a>
<span class="sourceLineNo">528</span> private static class StringKey extends PtrKey {<a name="line.528"></a>
<span class="sourceLineNo">529</span> public StringKey(int index) {<a name="line.529"></a>
<span class="sourceLineNo">530</span> super(index);<a name="line.530"></a>
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<span class="sourceLineNo">532</span> }<a name="line.532"></a>
<span class="sourceLineNo">533</span><a name="line.533"></a>
<span class="sourceLineNo">534</span> /**<a name="line.534"></a>
<span class="sourceLineNo">535</span> * Key for class entries.<a name="line.535"></a>
<span class="sourceLineNo">536</span> */<a name="line.536"></a>
<span class="sourceLineNo">537</span> private static class ClassKey extends PtrKey {<a name="line.537"></a>
<span class="sourceLineNo">538</span> public ClassKey(int index) {<a name="line.538"></a>
<span class="sourceLineNo">539</span> super(index);<a name="line.539"></a>
<span class="sourceLineNo">540</span> }<a name="line.540"></a>
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<span class="sourceLineNo">542</span><a name="line.542"></a>
<span class="sourceLineNo">543</span> /**<a name="line.543"></a>
<span class="sourceLineNo">544</span> * Base class key for entries with two ptr to other entries.<a name="line.544"></a>
<span class="sourceLineNo">545</span> */<a name="line.545"></a>
<span class="sourceLineNo">546</span> private static abstract class DoublePtrKey {<a name="line.546"></a>
<span class="sourceLineNo">547</span> private final int _index1;<a name="line.547"></a>
<span class="sourceLineNo">548</span> private final int _index2;<a name="line.548"></a>
<span class="sourceLineNo">549</span><a name="line.549"></a>
<span class="sourceLineNo">550</span> public DoublePtrKey(int index1, int index2) {<a name="line.550"></a>
<span class="sourceLineNo">551</span> _index1 = index1;<a name="line.551"></a>
<span class="sourceLineNo">552</span> _index2 = index2;<a name="line.552"></a>
<span class="sourceLineNo">553</span> }<a name="line.553"></a>
<span class="sourceLineNo">554</span><a name="line.554"></a>
<span class="sourceLineNo">555</span> public int hashCode() {<a name="line.555"></a>
<span class="sourceLineNo">556</span> return _index1 ^ _index2;<a name="line.556"></a>
<span class="sourceLineNo">557</span> }<a name="line.557"></a>
<span class="sourceLineNo">558</span><a name="line.558"></a>
<span class="sourceLineNo">559</span> public boolean equals(Object other) {<a name="line.559"></a>
<span class="sourceLineNo">560</span> if (other == this)<a name="line.560"></a>
<span class="sourceLineNo">561</span> return true;<a name="line.561"></a>
<span class="sourceLineNo">562</span> if (other.getClass() != getClass())<a name="line.562"></a>
<span class="sourceLineNo">563</span> return false;<a name="line.563"></a>
<span class="sourceLineNo">564</span> DoublePtrKey key = (DoublePtrKey) other;<a name="line.564"></a>
<span class="sourceLineNo">565</span> return key._index1 == _index1 && key._index2 == _index2;<a name="line.565"></a>
<span class="sourceLineNo">566</span> }<a name="line.566"></a>
<span class="sourceLineNo">567</span> }<a name="line.567"></a>
<span class="sourceLineNo">568</span><a name="line.568"></a>
<span class="sourceLineNo">569</span> /**<a name="line.569"></a>
<span class="sourceLineNo">570</span> * Key for name and type entries.<a name="line.570"></a>
<span class="sourceLineNo">571</span> */<a name="line.571"></a>
<span class="sourceLineNo">572</span> private static class NameAndTypeKey extends DoublePtrKey {<a name="line.572"></a>
<span class="sourceLineNo">573</span> public NameAndTypeKey(int index1, int index2) {<a name="line.573"></a>
<span class="sourceLineNo">574</span> super(index1, index2);<a name="line.574"></a>
<span class="sourceLineNo">575</span> }<a name="line.575"></a>
<span class="sourceLineNo">576</span> }<a name="line.576"></a>
<span class="sourceLineNo">577</span><a name="line.577"></a>
<span class="sourceLineNo">578</span> /**<a name="line.578"></a>
<span class="sourceLineNo">579</span> * Key for field entries.<a name="line.579"></a>
<span class="sourceLineNo">580</span> */<a name="line.580"></a>
<span class="sourceLineNo">581</span> private static class FieldKey extends DoublePtrKey {<a name="line.581"></a>
<span class="sourceLineNo">582</span> public FieldKey(int index1, int index2) {<a name="line.582"></a>
<span class="sourceLineNo">583</span> super(index1, index2);<a name="line.583"></a>
<span class="sourceLineNo">584</span> }<a name="line.584"></a>
<span class="sourceLineNo">585</span> }<a name="line.585"></a>
<span class="sourceLineNo">586</span><a name="line.586"></a>
<span class="sourceLineNo">587</span> /**<a name="line.587"></a>
<span class="sourceLineNo">588</span> * Key for method entries.<a name="line.588"></a>
<span class="sourceLineNo">589</span> */<a name="line.589"></a>
<span class="sourceLineNo">590</span> private static class MethodKey extends DoublePtrKey {<a name="line.590"></a>
<span class="sourceLineNo">591</span> public MethodKey(int index1, int index2) {<a name="line.591"></a>
<span class="sourceLineNo">592</span> super(index1, index2);<a name="line.592"></a>
<span class="sourceLineNo">593</span> }<a name="line.593"></a>
<span class="sourceLineNo">594</span> }<a name="line.594"></a>
<span class="sourceLineNo">595</span><a name="line.595"></a>
<span class="sourceLineNo">596</span> /**<a name="line.596"></a>
<span class="sourceLineNo">597</span> * Key for interface method entries.<a name="line.597"></a>
<span class="sourceLineNo">598</span> */<a name="line.598"></a>
<span class="sourceLineNo">599</span> private static class InterfaceMethodKey extends DoublePtrKey {<a name="line.599"></a>
<span class="sourceLineNo">600</span> public InterfaceMethodKey(int index1, int index2) {<a name="line.600"></a>
<span class="sourceLineNo">601</span> super(index1, index2);<a name="line.601"></a>
<span class="sourceLineNo">602</span> }<a name="line.602"></a>
<span class="sourceLineNo">603</span> }<a name="line.603"></a>
<span class="sourceLineNo">604</span> <a name="line.604"></a>
<span class="sourceLineNo">605</span> /**<a name="line.605"></a>
<span class="sourceLineNo">606</span> * Key for method entries.<a name="line.606"></a>
<span class="sourceLineNo">607</span> */<a name="line.607"></a>
<span class="sourceLineNo">608</span> private static class InvokeDynamicKey extends DoublePtrKey {<a name="line.608"></a>
<span class="sourceLineNo">609</span> public InvokeDynamicKey(int index1, int index2) {<a name="line.609"></a>
<span class="sourceLineNo">610</span> super(index1, index2);<a name="line.610"></a>
<span class="sourceLineNo">611</span> }<a name="line.611"></a>
<span class="sourceLineNo">612</span> }<a name="line.612"></a>
<span class="sourceLineNo">613</span>}<a name="line.613"></a>
</pre>
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