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<pre><span class="sourceLineNo">001</span>package serp.bytecode;<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><a name="line.4"></a>
<span class="sourceLineNo">005</span>import serp.bytecode.visitor.*;<a name="line.5"></a>
<span class="sourceLineNo">006</span><a name="line.6"></a>
<span class="sourceLineNo">007</span>/**<a name="line.7"></a>
<span class="sourceLineNo">008</span> * The <code>wide</code> instruction, which is used to allow other<a name="line.8"></a>
<span class="sourceLineNo">009</span> * instructions to index values beyond what they can normally index baed<a name="line.9"></a>
<span class="sourceLineNo">010</span> * on the length of their arguments.<a name="line.10"></a>
<span class="sourceLineNo">011</span> *<a name="line.11"></a>
<span class="sourceLineNo">012</span> * @author Abe White<a name="line.12"></a>
<span class="sourceLineNo">013</span> */<a name="line.13"></a>
<span class="sourceLineNo">014</span>public class WideInstruction extends LocalVariableInstruction {<a name="line.14"></a>
<span class="sourceLineNo">015</span> private static final Class[][] _mappings = new Class[][] {<a name="line.15"></a>
<span class="sourceLineNo">016</span> { byte.class, int.class },<a name="line.16"></a>
<span class="sourceLineNo">017</span> { boolean.class, int.class },<a name="line.17"></a>
<span class="sourceLineNo">018</span> { char.class, int.class },<a name="line.18"></a>
<span class="sourceLineNo">019</span> { short.class, int.class },<a name="line.19"></a>
<span class="sourceLineNo">020</span> { void.class, int.class },<a name="line.20"></a>
<span class="sourceLineNo">021</span> };<a name="line.21"></a>
<span class="sourceLineNo">022</span> private int _ins = Constants.NOP;<a name="line.22"></a>
<span class="sourceLineNo">023</span> private int _inc = -1;<a name="line.23"></a>
<span class="sourceLineNo">024</span><a name="line.24"></a>
<span class="sourceLineNo">025</span> WideInstruction(Code owner) {<a name="line.25"></a>
<span class="sourceLineNo">026</span> super(owner, Constants.WIDE);<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> int getLength() {<a name="line.29"></a>
<span class="sourceLineNo">030</span> // opcode, ins, index<a name="line.30"></a>
<span class="sourceLineNo">031</span> int length = super.getLength() + 1 + 2;<a name="line.31"></a>
<span class="sourceLineNo">032</span><a name="line.32"></a>
<span class="sourceLineNo">033</span> // increment<a name="line.33"></a>
<span class="sourceLineNo">034</span> if (_ins == Constants.IINC)<a name="line.34"></a>
<span class="sourceLineNo">035</span> length += 2;<a name="line.35"></a>
<span class="sourceLineNo">036</span> return length;<a name="line.36"></a>
<span class="sourceLineNo">037</span> }<a name="line.37"></a>
<span class="sourceLineNo">038</span><a name="line.38"></a>
<span class="sourceLineNo">039</span> public int getStackChange() {<a name="line.39"></a>
<span class="sourceLineNo">040</span> switch (_ins) {<a name="line.40"></a>
<span class="sourceLineNo">041</span> case Constants.ILOAD:<a name="line.41"></a>
<span class="sourceLineNo">042</span> case Constants.FLOAD:<a name="line.42"></a>
<span class="sourceLineNo">043</span> case Constants.ALOAD:<a name="line.43"></a>
<span class="sourceLineNo">044</span> return 1;<a name="line.44"></a>
<span class="sourceLineNo">045</span> case Constants.LLOAD:<a name="line.45"></a>
<span class="sourceLineNo">046</span> case Constants.DLOAD:<a name="line.46"></a>
<span class="sourceLineNo">047</span> return 2;<a name="line.47"></a>
<span class="sourceLineNo">048</span> case Constants.ISTORE:<a name="line.48"></a>
<span class="sourceLineNo">049</span> case Constants.FSTORE:<a name="line.49"></a>
<span class="sourceLineNo">050</span> case Constants.ASTORE:<a name="line.50"></a>
<span class="sourceLineNo">051</span> return -1;<a name="line.51"></a>
<span class="sourceLineNo">052</span> case Constants.LSTORE:<a name="line.52"></a>
<span class="sourceLineNo">053</span> case Constants.DSTORE:<a name="line.53"></a>
<span class="sourceLineNo">054</span> return -2;<a name="line.54"></a>
<span class="sourceLineNo">055</span> default:<a name="line.55"></a>
<span class="sourceLineNo">056</span> return 0;<a name="line.56"></a>
<span class="sourceLineNo">057</span> }<a name="line.57"></a>
<span class="sourceLineNo">058</span> }<a name="line.58"></a>
<span class="sourceLineNo">059</span><a name="line.59"></a>
<span class="sourceLineNo">060</span> public int getLogicalStackChange() {<a name="line.60"></a>
<span class="sourceLineNo">061</span> switch (_ins) {<a name="line.61"></a>
<span class="sourceLineNo">062</span> case Constants.ILOAD:<a name="line.62"></a>
<span class="sourceLineNo">063</span> case Constants.FLOAD:<a name="line.63"></a>
<span class="sourceLineNo">064</span> case Constants.ALOAD:<a name="line.64"></a>
<span class="sourceLineNo">065</span> case Constants.LLOAD:<a name="line.65"></a>
<span class="sourceLineNo">066</span> case Constants.DLOAD:<a name="line.66"></a>
<span class="sourceLineNo">067</span> return 1;<a name="line.67"></a>
<span class="sourceLineNo">068</span> case Constants.ISTORE:<a name="line.68"></a>
<span class="sourceLineNo">069</span> case Constants.FSTORE:<a name="line.69"></a>
<span class="sourceLineNo">070</span> case Constants.ASTORE:<a name="line.70"></a>
<span class="sourceLineNo">071</span> case Constants.LSTORE:<a name="line.71"></a>
<span class="sourceLineNo">072</span> case Constants.DSTORE:<a name="line.72"></a>
<span class="sourceLineNo">073</span> return -1;<a name="line.73"></a>
<span class="sourceLineNo">074</span> default:<a name="line.74"></a>
<span class="sourceLineNo">075</span> return 0;<a name="line.75"></a>
<span class="sourceLineNo">076</span> }<a name="line.76"></a>
<span class="sourceLineNo">077</span> }<a name="line.77"></a>
<span class="sourceLineNo">078</span><a name="line.78"></a>
<span class="sourceLineNo">079</span> public String getTypeName() {<a name="line.79"></a>
<span class="sourceLineNo">080</span> switch (_ins) {<a name="line.80"></a>
<span class="sourceLineNo">081</span> case Constants.ILOAD:<a name="line.81"></a>
<span class="sourceLineNo">082</span> case Constants.ISTORE:<a name="line.82"></a>
<span class="sourceLineNo">083</span> return int.class.getName();<a name="line.83"></a>
<span class="sourceLineNo">084</span> case Constants.LLOAD:<a name="line.84"></a>
<span class="sourceLineNo">085</span> case Constants.LSTORE:<a name="line.85"></a>
<span class="sourceLineNo">086</span> return long.class.getName();<a name="line.86"></a>
<span class="sourceLineNo">087</span> case Constants.FLOAD:<a name="line.87"></a>
<span class="sourceLineNo">088</span> case Constants.FSTORE:<a name="line.88"></a>
<span class="sourceLineNo">089</span> return float.class.getName();<a name="line.89"></a>
<span class="sourceLineNo">090</span> case Constants.DLOAD:<a name="line.90"></a>
<span class="sourceLineNo">091</span> case Constants.DSTORE:<a name="line.91"></a>
<span class="sourceLineNo">092</span> return double.class.getName();<a name="line.92"></a>
<span class="sourceLineNo">093</span> case Constants.ALOAD:<a name="line.93"></a>
<span class="sourceLineNo">094</span> case Constants.ASTORE:<a name="line.94"></a>
<span class="sourceLineNo">095</span> return Object.class.getName();<a name="line.95"></a>
<span class="sourceLineNo">096</span> default:<a name="line.96"></a>
<span class="sourceLineNo">097</span> return null;<a name="line.97"></a>
<span class="sourceLineNo">098</span> }<a name="line.98"></a>
<span class="sourceLineNo">099</span> }<a name="line.99"></a>
<span class="sourceLineNo">100</span><a name="line.100"></a>
<span class="sourceLineNo">101</span> public TypedInstruction setType(String type) {<a name="line.101"></a>
<span class="sourceLineNo">102</span> type = mapType(type, _mappings, true);<a name="line.102"></a>
<span class="sourceLineNo">103</span> switch (_ins) {<a name="line.103"></a>
<span class="sourceLineNo">104</span> case Constants.ILOAD:<a name="line.104"></a>
<span class="sourceLineNo">105</span> case Constants.LLOAD:<a name="line.105"></a>
<span class="sourceLineNo">106</span> case Constants.FLOAD:<a name="line.106"></a>
<span class="sourceLineNo">107</span> case Constants.DLOAD:<a name="line.107"></a>
<span class="sourceLineNo">108</span> case Constants.ALOAD:<a name="line.108"></a>
<span class="sourceLineNo">109</span> if (type == null)<a name="line.109"></a>
<span class="sourceLineNo">110</span> throw new IllegalStateException();<a name="line.110"></a>
<span class="sourceLineNo">111</span> switch (type.charAt(0)) {<a name="line.111"></a>
<span class="sourceLineNo">112</span> case 'i':<a name="line.112"></a>
<span class="sourceLineNo">113</span> return (TypedInstruction) setInstruction(Constants.ILOAD);<a name="line.113"></a>
<span class="sourceLineNo">114</span> case 'l':<a name="line.114"></a>
<span class="sourceLineNo">115</span> return (TypedInstruction) setInstruction(Constants.LLOAD);<a name="line.115"></a>
<span class="sourceLineNo">116</span> case 'f':<a name="line.116"></a>
<span class="sourceLineNo">117</span> return (TypedInstruction) setInstruction(Constants.FLOAD);<a name="line.117"></a>
<span class="sourceLineNo">118</span> case 'd':<a name="line.118"></a>
<span class="sourceLineNo">119</span> return (TypedInstruction) setInstruction(Constants.DLOAD);<a name="line.119"></a>
<span class="sourceLineNo">120</span> default:<a name="line.120"></a>
<span class="sourceLineNo">121</span> return (TypedInstruction) setInstruction(Constants.ALOAD);<a name="line.121"></a>
<span class="sourceLineNo">122</span> }<a name="line.122"></a>
<span class="sourceLineNo">123</span> case Constants.ISTORE:<a name="line.123"></a>
<span class="sourceLineNo">124</span> case Constants.LSTORE:<a name="line.124"></a>
<span class="sourceLineNo">125</span> case Constants.FSTORE:<a name="line.125"></a>
<span class="sourceLineNo">126</span> case Constants.DSTORE:<a name="line.126"></a>
<span class="sourceLineNo">127</span> case Constants.ASTORE:<a name="line.127"></a>
<span class="sourceLineNo">128</span> if (type == null)<a name="line.128"></a>
<span class="sourceLineNo">129</span> throw new IllegalStateException();<a name="line.129"></a>
<span class="sourceLineNo">130</span> switch (type.charAt(0)) {<a name="line.130"></a>
<span class="sourceLineNo">131</span> case 'i':<a name="line.131"></a>
<span class="sourceLineNo">132</span> return (TypedInstruction) setInstruction(Constants.ISTORE);<a name="line.132"></a>
<span class="sourceLineNo">133</span> case 'l':<a name="line.133"></a>
<span class="sourceLineNo">134</span> return (TypedInstruction) setInstruction(Constants.LSTORE);<a name="line.134"></a>
<span class="sourceLineNo">135</span> case 'f':<a name="line.135"></a>
<span class="sourceLineNo">136</span> return (TypedInstruction) setInstruction(Constants.FSTORE);<a name="line.136"></a>
<span class="sourceLineNo">137</span> case 'd':<a name="line.137"></a>
<span class="sourceLineNo">138</span> return (TypedInstruction) setInstruction(Constants.DSTORE);<a name="line.138"></a>
<span class="sourceLineNo">139</span> default:<a name="line.139"></a>
<span class="sourceLineNo">140</span> return (TypedInstruction) setInstruction(Constants.ASTORE);<a name="line.140"></a>
<span class="sourceLineNo">141</span> }<a name="line.141"></a>
<span class="sourceLineNo">142</span> default:<a name="line.142"></a>
<span class="sourceLineNo">143</span> if (type != null)<a name="line.143"></a>
<span class="sourceLineNo">144</span> throw new IllegalStateException("Augmented instruction not " <a name="line.144"></a>
<span class="sourceLineNo">145</span> + "typed");<a name="line.145"></a>
<span class="sourceLineNo">146</span> return this;<a name="line.146"></a>
<span class="sourceLineNo">147</span> }<a name="line.147"></a>
<span class="sourceLineNo">148</span> }<a name="line.148"></a>
<span class="sourceLineNo">149</span><a name="line.149"></a>
<span class="sourceLineNo">150</span> /**<a name="line.150"></a>
<span class="sourceLineNo">151</span> * Return the opcode of the instruction to modify; this will return one<a name="line.151"></a>
<span class="sourceLineNo">152</span> * of the constants defined in {@link Constants}.<a name="line.152"></a>
<span class="sourceLineNo">153</span> */<a name="line.153"></a>
<span class="sourceLineNo">154</span> public int getInstruction() {<a name="line.154"></a>
<span class="sourceLineNo">155</span> return _ins;<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> /**<a name="line.158"></a>
<span class="sourceLineNo">159</span> * Set the type of instruction this wide instruction modifies.<a name="line.159"></a>
<span class="sourceLineNo">160</span> */<a name="line.160"></a>
<span class="sourceLineNo">161</span> public WideInstruction setInstruction(Instruction ins) {<a name="line.161"></a>
<span class="sourceLineNo">162</span> if (ins == null)<a name="line.162"></a>
<span class="sourceLineNo">163</span> return setInstruction(Constants.NOP);<a name="line.163"></a>
<span class="sourceLineNo">164</span> setInstruction(ins.getOpcode());<a name="line.164"></a>
<span class="sourceLineNo">165</span> if (_ins == Constants.IINC)<a name="line.165"></a>
<span class="sourceLineNo">166</span> _inc = ((IIncInstruction) ins).getIncrement();<a name="line.166"></a>
<span class="sourceLineNo">167</span> return this;<a name="line.167"></a>
<span class="sourceLineNo">168</span> }<a name="line.168"></a>
<span class="sourceLineNo">169</span><a name="line.169"></a>
<span class="sourceLineNo">170</span> /**<a name="line.170"></a>
<span class="sourceLineNo">171</span> * Set the type of instruction this wide instruction modifies.<a name="line.171"></a>
<span class="sourceLineNo">172</span> */<a name="line.172"></a>
<span class="sourceLineNo">173</span> public WideInstruction setInstruction(int opcode) {<a name="line.173"></a>
<span class="sourceLineNo">174</span> int len = getLength();<a name="line.174"></a>
<span class="sourceLineNo">175</span> _ins = opcode;<a name="line.175"></a>
<span class="sourceLineNo">176</span> if (len != getLength())<a name="line.176"></a>
<span class="sourceLineNo">177</span> invalidateByteIndexes();<a name="line.177"></a>
<span class="sourceLineNo">178</span> return this;<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> /**<a name="line.181"></a>
<span class="sourceLineNo">182</span> * Set the type of instruction this wide instruction modifies.<a name="line.182"></a>
<span class="sourceLineNo">183</span> *<a name="line.183"></a>
<span class="sourceLineNo">184</span> * @return this instruction, for method chaining<a name="line.184"></a>
<span class="sourceLineNo">185</span> */<a name="line.185"></a>
<span class="sourceLineNo">186</span> public WideInstruction iinc() {<a name="line.186"></a>
<span class="sourceLineNo">187</span> return setInstruction(Constants.IINC);<a name="line.187"></a>
<span class="sourceLineNo">188</span> }<a name="line.188"></a>
<span class="sourceLineNo">189</span><a name="line.189"></a>
<span class="sourceLineNo">190</span> /**<a name="line.190"></a>
<span class="sourceLineNo">191</span> * Set the type of instruction this wide instruction modifies.<a name="line.191"></a>
<span class="sourceLineNo">192</span> *<a name="line.192"></a>
<span class="sourceLineNo">193</span> * @return this instruction, for method chaining<a name="line.193"></a>
<span class="sourceLineNo">194</span> */<a name="line.194"></a>
<span class="sourceLineNo">195</span> public WideInstruction ret() {<a name="line.195"></a>
<span class="sourceLineNo">196</span> return setInstruction(Constants.RET);<a name="line.196"></a>
<span class="sourceLineNo">197</span> }<a name="line.197"></a>
<span class="sourceLineNo">198</span><a name="line.198"></a>
<span class="sourceLineNo">199</span> /**<a name="line.199"></a>
<span class="sourceLineNo">200</span> * Set the type of instruction this wide instruction modifies.<a name="line.200"></a>
<span class="sourceLineNo">201</span> *<a name="line.201"></a>
<span class="sourceLineNo">202</span> * @return this instruction, for method chaining<a name="line.202"></a>
<span class="sourceLineNo">203</span> */<a name="line.203"></a>
<span class="sourceLineNo">204</span> public WideInstruction iload() {<a name="line.204"></a>
<span class="sourceLineNo">205</span> return setInstruction(Constants.ILOAD);<a name="line.205"></a>
<span class="sourceLineNo">206</span> }<a name="line.206"></a>
<span class="sourceLineNo">207</span><a name="line.207"></a>
<span class="sourceLineNo">208</span> /**<a name="line.208"></a>
<span class="sourceLineNo">209</span> * Set the type of instruction this wide instruction modifies.<a name="line.209"></a>
<span class="sourceLineNo">210</span> *<a name="line.210"></a>
<span class="sourceLineNo">211</span> * @return this instruction, for method chaining<a name="line.211"></a>
<span class="sourceLineNo">212</span> */<a name="line.212"></a>
<span class="sourceLineNo">213</span> public WideInstruction fload() {<a name="line.213"></a>
<span class="sourceLineNo">214</span> return setInstruction(Constants.FLOAD);<a name="line.214"></a>
<span class="sourceLineNo">215</span> }<a name="line.215"></a>
<span class="sourceLineNo">216</span><a name="line.216"></a>
<span class="sourceLineNo">217</span> /**<a name="line.217"></a>
<span class="sourceLineNo">218</span> * Set the type of instruction this wide instruction modifies.<a name="line.218"></a>
<span class="sourceLineNo">219</span> *<a name="line.219"></a>
<span class="sourceLineNo">220</span> * @return this instruction, for method chaining<a name="line.220"></a>
<span class="sourceLineNo">221</span> */<a name="line.221"></a>
<span class="sourceLineNo">222</span> public WideInstruction aload() {<a name="line.222"></a>
<span class="sourceLineNo">223</span> return setInstruction(Constants.ALOAD);<a name="line.223"></a>
<span class="sourceLineNo">224</span> }<a name="line.224"></a>
<span class="sourceLineNo">225</span><a name="line.225"></a>
<span class="sourceLineNo">226</span> /**<a name="line.226"></a>
<span class="sourceLineNo">227</span> * Set the type of instruction this wide instruction modifies.<a name="line.227"></a>
<span class="sourceLineNo">228</span> *<a name="line.228"></a>
<span class="sourceLineNo">229</span> * @return this instruction, for method chaining<a name="line.229"></a>
<span class="sourceLineNo">230</span> */<a name="line.230"></a>
<span class="sourceLineNo">231</span> public WideInstruction lload() {<a name="line.231"></a>
<span class="sourceLineNo">232</span> return setInstruction(Constants.LLOAD);<a name="line.232"></a>
<span class="sourceLineNo">233</span> }<a name="line.233"></a>
<span class="sourceLineNo">234</span><a name="line.234"></a>
<span class="sourceLineNo">235</span> /**<a name="line.235"></a>
<span class="sourceLineNo">236</span> * Set the type of instruction this wide instruction modifies.<a name="line.236"></a>
<span class="sourceLineNo">237</span> *<a name="line.237"></a>
<span class="sourceLineNo">238</span> * @return this instruction, for method chaining<a name="line.238"></a>
<span class="sourceLineNo">239</span> */<a name="line.239"></a>
<span class="sourceLineNo">240</span> public WideInstruction dload() {<a name="line.240"></a>
<span class="sourceLineNo">241</span> return setInstruction(Constants.DLOAD);<a name="line.241"></a>
<span class="sourceLineNo">242</span> }<a name="line.242"></a>
<span class="sourceLineNo">243</span><a name="line.243"></a>
<span class="sourceLineNo">244</span> /**<a name="line.244"></a>
<span class="sourceLineNo">245</span> * Set the type of instruction this wide instruction modifies.<a name="line.245"></a>
<span class="sourceLineNo">246</span> *<a name="line.246"></a>
<span class="sourceLineNo">247</span> * @return this instruction, for method chaining<a name="line.247"></a>
<span class="sourceLineNo">248</span> */<a name="line.248"></a>
<span class="sourceLineNo">249</span> public WideInstruction istore() {<a name="line.249"></a>
<span class="sourceLineNo">250</span> return setInstruction(Constants.ISTORE);<a name="line.250"></a>
<span class="sourceLineNo">251</span> }<a name="line.251"></a>
<span class="sourceLineNo">252</span><a name="line.252"></a>
<span class="sourceLineNo">253</span> /**<a name="line.253"></a>
<span class="sourceLineNo">254</span> * Set the type of instruction this wide instruction modifies.<a name="line.254"></a>
<span class="sourceLineNo">255</span> *<a name="line.255"></a>
<span class="sourceLineNo">256</span> * @return this instruction, for method chaining<a name="line.256"></a>
<span class="sourceLineNo">257</span> */<a name="line.257"></a>
<span class="sourceLineNo">258</span> public WideInstruction fstore() {<a name="line.258"></a>
<span class="sourceLineNo">259</span> return setInstruction(Constants.FSTORE);<a name="line.259"></a>
<span class="sourceLineNo">260</span> }<a name="line.260"></a>
<span class="sourceLineNo">261</span><a name="line.261"></a>
<span class="sourceLineNo">262</span> /**<a name="line.262"></a>
<span class="sourceLineNo">263</span> * Set the type of instruction this wide instruction modifies.<a name="line.263"></a>
<span class="sourceLineNo">264</span> *<a name="line.264"></a>
<span class="sourceLineNo">265</span> * @return this instruction, for method chaining<a name="line.265"></a>
<span class="sourceLineNo">266</span> */<a name="line.266"></a>
<span class="sourceLineNo">267</span> public WideInstruction astore() {<a name="line.267"></a>
<span class="sourceLineNo">268</span> return setInstruction(Constants.ASTORE);<a name="line.268"></a>
<span class="sourceLineNo">269</span> }<a name="line.269"></a>
<span class="sourceLineNo">270</span><a name="line.270"></a>
<span class="sourceLineNo">271</span> /**<a name="line.271"></a>
<span class="sourceLineNo">272</span> * Set the type of instruction this wide instruction modifies.<a name="line.272"></a>
<span class="sourceLineNo">273</span> *<a name="line.273"></a>
<span class="sourceLineNo">274</span> * @return this instruction, for method chaining<a name="line.274"></a>
<span class="sourceLineNo">275</span> */<a name="line.275"></a>
<span class="sourceLineNo">276</span> public WideInstruction lstore() {<a name="line.276"></a>
<span class="sourceLineNo">277</span> return setInstruction(Constants.LSTORE);<a name="line.277"></a>
<span class="sourceLineNo">278</span> }<a name="line.278"></a>
<span class="sourceLineNo">279</span><a name="line.279"></a>
<span class="sourceLineNo">280</span> /**<a name="line.280"></a>
<span class="sourceLineNo">281</span> * Set the type of instruction this wide instruction modifies.<a name="line.281"></a>
<span class="sourceLineNo">282</span> *<a name="line.282"></a>
<span class="sourceLineNo">283</span> * @return this instruction, for method chaining<a name="line.283"></a>
<span class="sourceLineNo">284</span> */<a name="line.284"></a>
<span class="sourceLineNo">285</span> public WideInstruction dstore() {<a name="line.285"></a>
<span class="sourceLineNo">286</span> return setInstruction(Constants.DSTORE);<a name="line.286"></a>
<span class="sourceLineNo">287</span> }<a name="line.287"></a>
<span class="sourceLineNo">288</span><a name="line.288"></a>
<span class="sourceLineNo">289</span> /**<a name="line.289"></a>
<span class="sourceLineNo">290</span> * Return the increment for this instruction if it augments IINC, or -1<a name="line.290"></a>
<span class="sourceLineNo">291</span> * if unset.<a name="line.291"></a>
<span class="sourceLineNo">292</span> */<a name="line.292"></a>
<span class="sourceLineNo">293</span> public int getIncrement() {<a name="line.293"></a>
<span class="sourceLineNo">294</span> return _inc;<a name="line.294"></a>
<span class="sourceLineNo">295</span> }<a name="line.295"></a>
<span class="sourceLineNo">296</span><a name="line.296"></a>
<span class="sourceLineNo">297</span> /**<a name="line.297"></a>
<span class="sourceLineNo">298</span> * Set the increment on this instruction if it augments IINC.<a name="line.298"></a>
<span class="sourceLineNo">299</span> *<a name="line.299"></a>
<span class="sourceLineNo">300</span> * @return this Instruction, for method chaining<a name="line.300"></a>
<span class="sourceLineNo">301</span> */<a name="line.301"></a>
<span class="sourceLineNo">302</span> public WideInstruction setIncrement(int val) {<a name="line.302"></a>
<span class="sourceLineNo">303</span> _inc = val;<a name="line.303"></a>
<span class="sourceLineNo">304</span> return this;<a name="line.304"></a>
<span class="sourceLineNo">305</span> }<a name="line.305"></a>
<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> * WideInstructions are equal if the instruction they augment is the same<a name="line.308"></a>
<span class="sourceLineNo">309</span> * or unset.<a name="line.309"></a>
<span class="sourceLineNo">310</span> */<a name="line.310"></a>
<span class="sourceLineNo">311</span> public boolean equalsInstruction(Instruction other) {<a name="line.311"></a>
<span class="sourceLineNo">312</span> if (other == this)<a name="line.312"></a>
<span class="sourceLineNo">313</span> return true;<a name="line.313"></a>
<span class="sourceLineNo">314</span> if (!super.equalsInstruction(other))<a name="line.314"></a>
<span class="sourceLineNo">315</span> return false;<a name="line.315"></a>
<span class="sourceLineNo">316</span> if (!(other instanceof WideInstruction))<a name="line.316"></a>
<span class="sourceLineNo">317</span> return false;<a name="line.317"></a>
<span class="sourceLineNo">318</span><a name="line.318"></a>
<span class="sourceLineNo">319</span> WideInstruction ins = (WideInstruction) other;<a name="line.319"></a>
<span class="sourceLineNo">320</span> int code = getInstruction();<a name="line.320"></a>
<span class="sourceLineNo">321</span> int otherCode = ins.getInstruction();<a name="line.321"></a>
<span class="sourceLineNo">322</span> if (code != otherCode)<a name="line.322"></a>
<span class="sourceLineNo">323</span> return false;<a name="line.323"></a>
<span class="sourceLineNo">324</span> if (code == Constants.IINC) {<a name="line.324"></a>
<span class="sourceLineNo">325</span> int inc = getIncrement();<a name="line.325"></a>
<span class="sourceLineNo">326</span> int otherInc = ins.getIncrement();<a name="line.326"></a>
<span class="sourceLineNo">327</span> return (inc == -1) || (otherInc == -1) || (inc == otherInc);<a name="line.327"></a>
<span class="sourceLineNo">328</span> }<a name="line.328"></a>
<span class="sourceLineNo">329</span> return true;<a name="line.329"></a>
<span class="sourceLineNo">330</span> }<a name="line.330"></a>
<span class="sourceLineNo">331</span><a name="line.331"></a>
<span class="sourceLineNo">332</span> public void acceptVisit(BCVisitor visit) {<a name="line.332"></a>
<span class="sourceLineNo">333</span> visit.enterWideInstruction(this);<a name="line.333"></a>
<span class="sourceLineNo">334</span> visit.exitWideInstruction(this);<a name="line.334"></a>
<span class="sourceLineNo">335</span> }<a name="line.335"></a>
<span class="sourceLineNo">336</span><a name="line.336"></a>
<span class="sourceLineNo">337</span> void read(Instruction orig) {<a name="line.337"></a>
<span class="sourceLineNo">338</span> super.read(orig);<a name="line.338"></a>
<span class="sourceLineNo">339</span> setInstruction(((WideInstruction) orig).getInstruction());<a name="line.339"></a>
<span class="sourceLineNo">340</span> }<a name="line.340"></a>
<span class="sourceLineNo">341</span><a name="line.341"></a>
<span class="sourceLineNo">342</span> void read(DataInput in) throws IOException {<a name="line.342"></a>
<span class="sourceLineNo">343</span> super.read(in);<a name="line.343"></a>
<span class="sourceLineNo">344</span> _ins = in.readUnsignedByte();<a name="line.344"></a>
<span class="sourceLineNo">345</span> setLocal(in.readUnsignedShort());<a name="line.345"></a>
<span class="sourceLineNo">346</span> if (_ins == Constants.IINC)<a name="line.346"></a>
<span class="sourceLineNo">347</span> _inc = in.readUnsignedShort();<a name="line.347"></a>
<span class="sourceLineNo">348</span> }<a name="line.348"></a>
<span class="sourceLineNo">349</span><a name="line.349"></a>
<span class="sourceLineNo">350</span> void write(DataOutput out) throws IOException {<a name="line.350"></a>
<span class="sourceLineNo">351</span> super.write(out);<a name="line.351"></a>
<span class="sourceLineNo">352</span> out.writeByte(_ins);<a name="line.352"></a>
<span class="sourceLineNo">353</span> out.writeShort(getLocal());<a name="line.353"></a>
<span class="sourceLineNo">354</span> if (_ins == Constants.IINC)<a name="line.354"></a>
<span class="sourceLineNo">355</span> out.writeShort(_inc);<a name="line.355"></a>
<span class="sourceLineNo">356</span> }<a name="line.356"></a>
<span class="sourceLineNo">357</span>}<a name="line.357"></a>
</pre>
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