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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.util.*;<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>import serp.util.*;<a name="line.6"></a>
<span class="sourceLineNo">007</span><a name="line.7"></a>
<span class="sourceLineNo">008</span>/**<a name="line.8"></a>
<span class="sourceLineNo">009</span> * A conversion opcode such as <code>i2l, f2i</code>, etc.<a name="line.9"></a>
<span class="sourceLineNo">010</span> * Changing the types of the instruction will automatically<a name="line.10"></a>
<span class="sourceLineNo">011</span> * update the underlying opcode. Converting from one type to the same<a name="line.11"></a>
<span class="sourceLineNo">012</span> * type will result in a <code>nop</code>.<a name="line.12"></a>
<span class="sourceLineNo">013</span> *<a name="line.13"></a>
<span class="sourceLineNo">014</span> * @author Abe White<a name="line.14"></a>
<span class="sourceLineNo">015</span> */<a name="line.15"></a>
<span class="sourceLineNo">016</span>public class ConvertInstruction extends TypedInstruction {<a name="line.16"></a>
<span class="sourceLineNo">017</span> private static final Class[][] _mappings = new Class[][] {<a name="line.17"></a>
<span class="sourceLineNo">018</span> { boolean.class, int.class },<a name="line.18"></a>
<span class="sourceLineNo">019</span> { void.class, int.class },<a name="line.19"></a>
<span class="sourceLineNo">020</span> { Object.class, int.class },<a name="line.20"></a>
<span class="sourceLineNo">021</span> };<a name="line.21"></a>
<span class="sourceLineNo">022</span> private static final Class[][] _fromMappings = new Class[][] {<a name="line.22"></a>
<span class="sourceLineNo">023</span> { boolean.class, int.class },<a name="line.23"></a>
<span class="sourceLineNo">024</span> { void.class, int.class },<a name="line.24"></a>
<span class="sourceLineNo">025</span> { Object.class, int.class },<a name="line.25"></a>
<span class="sourceLineNo">026</span> { byte.class, int.class },<a name="line.26"></a>
<span class="sourceLineNo">027</span> { char.class, int.class },<a name="line.27"></a>
<span class="sourceLineNo">028</span> { short.class, int.class },<a name="line.28"></a>
<span class="sourceLineNo">029</span> };<a name="line.29"></a>
<span class="sourceLineNo">030</span> String _toType = null;<a name="line.30"></a>
<span class="sourceLineNo">031</span> String _fromType = null;<a name="line.31"></a>
<span class="sourceLineNo">032</span><a name="line.32"></a>
<span class="sourceLineNo">033</span> ConvertInstruction(Code owner) {<a name="line.33"></a>
<span class="sourceLineNo">034</span> super(owner);<a name="line.34"></a>
<span class="sourceLineNo">035</span> }<a name="line.35"></a>
<span class="sourceLineNo">036</span><a name="line.36"></a>
<span class="sourceLineNo">037</span> ConvertInstruction(Code owner, int opcode) {<a name="line.37"></a>
<span class="sourceLineNo">038</span> super(owner, opcode);<a name="line.38"></a>
<span class="sourceLineNo">039</span> }<a name="line.39"></a>
<span class="sourceLineNo">040</span><a name="line.40"></a>
<span class="sourceLineNo">041</span> public int getLogicalStackChange() {<a name="line.41"></a>
<span class="sourceLineNo">042</span> return 0;<a name="line.42"></a>
<span class="sourceLineNo">043</span> }<a name="line.43"></a>
<span class="sourceLineNo">044</span><a name="line.44"></a>
<span class="sourceLineNo">045</span> public int getStackChange() {<a name="line.45"></a>
<span class="sourceLineNo">046</span> switch (getOpcode()) {<a name="line.46"></a>
<span class="sourceLineNo">047</span> case Constants.I2L:<a name="line.47"></a>
<span class="sourceLineNo">048</span> case Constants.I2D:<a name="line.48"></a>
<span class="sourceLineNo">049</span> case Constants.F2L:<a name="line.49"></a>
<span class="sourceLineNo">050</span> case Constants.F2D:<a name="line.50"></a>
<span class="sourceLineNo">051</span> return 1;<a name="line.51"></a>
<span class="sourceLineNo">052</span> case Constants.L2I:<a name="line.52"></a>
<span class="sourceLineNo">053</span> case Constants.L2F:<a name="line.53"></a>
<span class="sourceLineNo">054</span> case Constants.D2I:<a name="line.54"></a>
<span class="sourceLineNo">055</span> case Constants.D2F:<a name="line.55"></a>
<span class="sourceLineNo">056</span> return -1;<a name="line.56"></a>
<span class="sourceLineNo">057</span> default:<a name="line.57"></a>
<span class="sourceLineNo">058</span> return 0;<a name="line.58"></a>
<span class="sourceLineNo">059</span> }<a name="line.59"></a>
<span class="sourceLineNo">060</span> }<a name="line.60"></a>
<span class="sourceLineNo">061</span><a name="line.61"></a>
<span class="sourceLineNo">062</span> public String getTypeName() {<a name="line.62"></a>
<span class="sourceLineNo">063</span> switch (getOpcode()) {<a name="line.63"></a>
<span class="sourceLineNo">064</span> case Constants.L2I:<a name="line.64"></a>
<span class="sourceLineNo">065</span> case Constants.F2I:<a name="line.65"></a>
<span class="sourceLineNo">066</span> case Constants.D2I:<a name="line.66"></a>
<span class="sourceLineNo">067</span> return int.class.getName();<a name="line.67"></a>
<span class="sourceLineNo">068</span> case Constants.I2L:<a name="line.68"></a>
<span class="sourceLineNo">069</span> case Constants.F2L:<a name="line.69"></a>
<span class="sourceLineNo">070</span> case Constants.D2L:<a name="line.70"></a>
<span class="sourceLineNo">071</span> return long.class.getName();<a name="line.71"></a>
<span class="sourceLineNo">072</span> case Constants.I2F:<a name="line.72"></a>
<span class="sourceLineNo">073</span> case Constants.L2F:<a name="line.73"></a>
<span class="sourceLineNo">074</span> case Constants.D2F:<a name="line.74"></a>
<span class="sourceLineNo">075</span> return float.class.getName();<a name="line.75"></a>
<span class="sourceLineNo">076</span> case Constants.I2D:<a name="line.76"></a>
<span class="sourceLineNo">077</span> case Constants.L2D:<a name="line.77"></a>
<span class="sourceLineNo">078</span> case Constants.F2D:<a name="line.78"></a>
<span class="sourceLineNo">079</span> return double.class.getName();<a name="line.79"></a>
<span class="sourceLineNo">080</span> case Constants.I2B:<a name="line.80"></a>
<span class="sourceLineNo">081</span> return byte.class.getName();<a name="line.81"></a>
<span class="sourceLineNo">082</span> case Constants.I2C:<a name="line.82"></a>
<span class="sourceLineNo">083</span> return char.class.getName();<a name="line.83"></a>
<span class="sourceLineNo">084</span> case Constants.I2S:<a name="line.84"></a>
<span class="sourceLineNo">085</span> return short.class.getName();<a name="line.85"></a>
<span class="sourceLineNo">086</span> default:<a name="line.86"></a>
<span class="sourceLineNo">087</span> return _toType;<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><a name="line.90"></a>
<span class="sourceLineNo">091</span> public TypedInstruction setType(String type) {<a name="line.91"></a>
<span class="sourceLineNo">092</span> String toType = mapType(type, _mappings, true);<a name="line.92"></a>
<span class="sourceLineNo">093</span> String fromType = getFromTypeName();<a name="line.93"></a>
<span class="sourceLineNo">094</span><a name="line.94"></a>
<span class="sourceLineNo">095</span> // if no valid opcode, remember current types in case they reset one<a name="line.95"></a>
<span class="sourceLineNo">096</span> // to create a valid opcode<a name="line.96"></a>
<span class="sourceLineNo">097</span> if (toType == null || fromType == null || toType.equals(fromType)) {<a name="line.97"></a>
<span class="sourceLineNo">098</span> _toType = toType;<a name="line.98"></a>
<span class="sourceLineNo">099</span> _fromType = fromType;<a name="line.99"></a>
<span class="sourceLineNo">100</span> return (TypedInstruction) setOpcode(Constants.NOP);<a name="line.100"></a>
<span class="sourceLineNo">101</span> }<a name="line.101"></a>
<span class="sourceLineNo">102</span><a name="line.102"></a>
<span class="sourceLineNo">103</span> // ok, valid conversion possible, forget saved types<a name="line.103"></a>
<span class="sourceLineNo">104</span> _toType = null;<a name="line.104"></a>
<span class="sourceLineNo">105</span> _fromType = null;<a name="line.105"></a>
<span class="sourceLineNo">106</span><a name="line.106"></a>
<span class="sourceLineNo">107</span> char to = toType.charAt(0);<a name="line.107"></a>
<span class="sourceLineNo">108</span> char from = fromType.charAt(0);<a name="line.108"></a>
<span class="sourceLineNo">109</span> switch (to) {<a name="line.109"></a>
<span class="sourceLineNo">110</span> case 'i':<a name="line.110"></a>
<span class="sourceLineNo">111</span> switch (from) {<a name="line.111"></a>
<span class="sourceLineNo">112</span> case 'l':<a name="line.112"></a>
<span class="sourceLineNo">113</span> return (TypedInstruction) setOpcode(Constants.L2I);<a name="line.113"></a>
<span class="sourceLineNo">114</span> case 'f':<a name="line.114"></a>
<span class="sourceLineNo">115</span> return (TypedInstruction) setOpcode(Constants.F2I);<a name="line.115"></a>
<span class="sourceLineNo">116</span> case 'd':<a name="line.116"></a>
<span class="sourceLineNo">117</span> return (TypedInstruction) setOpcode(Constants.D2I);<a name="line.117"></a>
<span class="sourceLineNo">118</span> }<a name="line.118"></a>
<span class="sourceLineNo">119</span> case 'l':<a name="line.119"></a>
<span class="sourceLineNo">120</span> switch (from) {<a name="line.120"></a>
<span class="sourceLineNo">121</span> case 'i':<a name="line.121"></a>
<span class="sourceLineNo">122</span> return (TypedInstruction) setOpcode(Constants.I2L);<a name="line.122"></a>
<span class="sourceLineNo">123</span> case 'f':<a name="line.123"></a>
<span class="sourceLineNo">124</span> return (TypedInstruction) setOpcode(Constants.F2L);<a name="line.124"></a>
<span class="sourceLineNo">125</span> case 'd':<a name="line.125"></a>
<span class="sourceLineNo">126</span> return (TypedInstruction) setOpcode(Constants.D2L);<a name="line.126"></a>
<span class="sourceLineNo">127</span> }<a name="line.127"></a>
<span class="sourceLineNo">128</span> case 'f':<a name="line.128"></a>
<span class="sourceLineNo">129</span> switch (from) {<a name="line.129"></a>
<span class="sourceLineNo">130</span> case 'i':<a name="line.130"></a>
<span class="sourceLineNo">131</span> return (TypedInstruction) setOpcode(Constants.I2F);<a name="line.131"></a>
<span class="sourceLineNo">132</span> case 'l':<a name="line.132"></a>
<span class="sourceLineNo">133</span> return (TypedInstruction) setOpcode(Constants.L2F);<a name="line.133"></a>
<span class="sourceLineNo">134</span> case 'd':<a name="line.134"></a>
<span class="sourceLineNo">135</span> return (TypedInstruction) setOpcode(Constants.D2F);<a name="line.135"></a>
<span class="sourceLineNo">136</span> }<a name="line.136"></a>
<span class="sourceLineNo">137</span> case 'd':<a name="line.137"></a>
<span class="sourceLineNo">138</span> switch (from) {<a name="line.138"></a>
<span class="sourceLineNo">139</span> case 'i':<a name="line.139"></a>
<span class="sourceLineNo">140</span> return (TypedInstruction) setOpcode(Constants.I2D);<a name="line.140"></a>
<span class="sourceLineNo">141</span> case 'l':<a name="line.141"></a>
<span class="sourceLineNo">142</span> return (TypedInstruction) setOpcode(Constants.L2D);<a name="line.142"></a>
<span class="sourceLineNo">143</span> case 'f':<a name="line.143"></a>
<span class="sourceLineNo">144</span> return (TypedInstruction) setOpcode(Constants.F2D);<a name="line.144"></a>
<span class="sourceLineNo">145</span> }<a name="line.145"></a>
<span class="sourceLineNo">146</span> case 'b':<a name="line.146"></a>
<span class="sourceLineNo">147</span> if (from == 'i')<a name="line.147"></a>
<span class="sourceLineNo">148</span> return (TypedInstruction) setOpcode(Constants.I2B);<a name="line.148"></a>
<span class="sourceLineNo">149</span> case 'C':<a name="line.149"></a>
<span class="sourceLineNo">150</span> if (from == 'i')<a name="line.150"></a>
<span class="sourceLineNo">151</span> return (TypedInstruction) setOpcode(Constants.I2C);<a name="line.151"></a>
<span class="sourceLineNo">152</span> case 'S':<a name="line.152"></a>
<span class="sourceLineNo">153</span> if (from == 'i')<a name="line.153"></a>
<span class="sourceLineNo">154</span> return (TypedInstruction) setOpcode(Constants.I2S);<a name="line.154"></a>
<span class="sourceLineNo">155</span> default:<a name="line.155"></a>
<span class="sourceLineNo">156</span> throw new IllegalStateException();<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><a name="line.159"></a>
<span class="sourceLineNo">160</span> /**<a name="line.160"></a>
<span class="sourceLineNo">161</span> * Return the name of the type being converted from.<a name="line.161"></a>
<span class="sourceLineNo">162</span> * If neither type has been set, this method will return null.<a name="line.162"></a>
<span class="sourceLineNo">163</span> */<a name="line.163"></a>
<span class="sourceLineNo">164</span> public String getFromTypeName() {<a name="line.164"></a>
<span class="sourceLineNo">165</span> switch (getOpcode()) {<a name="line.165"></a>
<span class="sourceLineNo">166</span> case Constants.I2L:<a name="line.166"></a>
<span class="sourceLineNo">167</span> case Constants.I2F:<a name="line.167"></a>
<span class="sourceLineNo">168</span> case Constants.I2D:<a name="line.168"></a>
<span class="sourceLineNo">169</span> case Constants.I2B:<a name="line.169"></a>
<span class="sourceLineNo">170</span> case Constants.I2S:<a name="line.170"></a>
<span class="sourceLineNo">171</span> case Constants.I2C:<a name="line.171"></a>
<span class="sourceLineNo">172</span> return int.class.getName();<a name="line.172"></a>
<span class="sourceLineNo">173</span> case Constants.L2I:<a name="line.173"></a>
<span class="sourceLineNo">174</span> case Constants.L2F:<a name="line.174"></a>
<span class="sourceLineNo">175</span> case Constants.L2D:<a name="line.175"></a>
<span class="sourceLineNo">176</span> return long.class.getName();<a name="line.176"></a>
<span class="sourceLineNo">177</span> case Constants.F2I:<a name="line.177"></a>
<span class="sourceLineNo">178</span> case Constants.F2L:<a name="line.178"></a>
<span class="sourceLineNo">179</span> case Constants.F2D:<a name="line.179"></a>
<span class="sourceLineNo">180</span> return float.class.getName();<a name="line.180"></a>
<span class="sourceLineNo">181</span> case Constants.D2I:<a name="line.181"></a>
<span class="sourceLineNo">182</span> case Constants.D2L:<a name="line.182"></a>
<span class="sourceLineNo">183</span> case Constants.D2F:<a name="line.183"></a>
<span class="sourceLineNo">184</span> return double.class.getName();<a name="line.184"></a>
<span class="sourceLineNo">185</span> default:<a name="line.185"></a>
<span class="sourceLineNo">186</span> return _fromType;<a name="line.186"></a>
<span class="sourceLineNo">187</span> }<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> * Return the {@link Class} of the type being converted from.<a name="line.191"></a>
<span class="sourceLineNo">192</span> * If neither type has been set, this method will return null.<a name="line.192"></a>
<span class="sourceLineNo">193</span> */<a name="line.193"></a>
<span class="sourceLineNo">194</span> public Class getFromType() {<a name="line.194"></a>
<span class="sourceLineNo">195</span> String type = getFromTypeName();<a name="line.195"></a>
<span class="sourceLineNo">196</span> if (type == null)<a name="line.196"></a>
<span class="sourceLineNo">197</span> return null;<a name="line.197"></a>
<span class="sourceLineNo">198</span> return Strings.toClass(type, getClassLoader());<a name="line.198"></a>
<span class="sourceLineNo">199</span> }<a name="line.199"></a>
<span class="sourceLineNo">200</span><a name="line.200"></a>
<span class="sourceLineNo">201</span> /**<a name="line.201"></a>
<span class="sourceLineNo">202</span> * Return the bytecode of the type being converted from.<a name="line.202"></a>
<span class="sourceLineNo">203</span> * If neither type has been set, this method will return null.<a name="line.203"></a>
<span class="sourceLineNo">204</span> */<a name="line.204"></a>
<span class="sourceLineNo">205</span> public BCClass getFromTypeBC() {<a name="line.205"></a>
<span class="sourceLineNo">206</span> String type = getFromTypeName();<a name="line.206"></a>
<span class="sourceLineNo">207</span> if (type == null)<a name="line.207"></a>
<span class="sourceLineNo">208</span> return null;<a name="line.208"></a>
<span class="sourceLineNo">209</span> return getProject().loadClass(type, getClassLoader());<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> * Set the type being converted from. Types that have no direct<a name="line.213"></a>
<span class="sourceLineNo">214</span> * support will be converted accordingly.<a name="line.214"></a>
<span class="sourceLineNo">215</span> *<a name="line.215"></a>
<span class="sourceLineNo">216</span> * @return this instruction, for method chaining<a name="line.216"></a>
<span class="sourceLineNo">217</span> */<a name="line.217"></a>
<span class="sourceLineNo">218</span> public ConvertInstruction setFromType(String type) {<a name="line.218"></a>
<span class="sourceLineNo">219</span> String fromType = mapType(type, _fromMappings, true);<a name="line.219"></a>
<span class="sourceLineNo">220</span> String toType = getTypeName();<a name="line.220"></a>
<span class="sourceLineNo">221</span><a name="line.221"></a>
<span class="sourceLineNo">222</span> // if no valid opcode, remember current types in case they reset one<a name="line.222"></a>
<span class="sourceLineNo">223</span> // to create a valid opcode<a name="line.223"></a>
<span class="sourceLineNo">224</span> if ((toType == null) || (fromType == null) || toType.equals(fromType)) {<a name="line.224"></a>
<span class="sourceLineNo">225</span> _toType = toType;<a name="line.225"></a>
<span class="sourceLineNo">226</span> _fromType = fromType;<a name="line.226"></a>
<span class="sourceLineNo">227</span> return (ConvertInstruction) setOpcode(Constants.NOP);<a name="line.227"></a>
<span class="sourceLineNo">228</span> }<a name="line.228"></a>
<span class="sourceLineNo">229</span><a name="line.229"></a>
<span class="sourceLineNo">230</span> // ok, valid conversion possible, forget saved types<a name="line.230"></a>
<span class="sourceLineNo">231</span> _toType = null;<a name="line.231"></a>
<span class="sourceLineNo">232</span> _fromType = null;<a name="line.232"></a>
<span class="sourceLineNo">233</span><a name="line.233"></a>
<span class="sourceLineNo">234</span> char to = toType.charAt(0);<a name="line.234"></a>
<span class="sourceLineNo">235</span> char from = fromType.charAt(0);<a name="line.235"></a>
<span class="sourceLineNo">236</span> switch (from) {<a name="line.236"></a>
<span class="sourceLineNo">237</span> case 'i':<a name="line.237"></a>
<span class="sourceLineNo">238</span> switch (to) {<a name="line.238"></a>
<span class="sourceLineNo">239</span> case 'l':<a name="line.239"></a>
<span class="sourceLineNo">240</span> return (ConvertInstruction) setOpcode(Constants.I2L);<a name="line.240"></a>
<span class="sourceLineNo">241</span> case 'f':<a name="line.241"></a>
<span class="sourceLineNo">242</span> return (ConvertInstruction) setOpcode(Constants.I2F);<a name="line.242"></a>
<span class="sourceLineNo">243</span> case 'd':<a name="line.243"></a>
<span class="sourceLineNo">244</span> return (ConvertInstruction) setOpcode(Constants.I2D);<a name="line.244"></a>
<span class="sourceLineNo">245</span> case 'b':<a name="line.245"></a>
<span class="sourceLineNo">246</span> return (ConvertInstruction) setOpcode(Constants.I2B);<a name="line.246"></a>
<span class="sourceLineNo">247</span> case 'c':<a name="line.247"></a>
<span class="sourceLineNo">248</span> return (ConvertInstruction) setOpcode(Constants.I2C);<a name="line.248"></a>
<span class="sourceLineNo">249</span> case 's':<a name="line.249"></a>
<span class="sourceLineNo">250</span> return (ConvertInstruction) setOpcode(Constants.I2S);<a name="line.250"></a>
<span class="sourceLineNo">251</span> }<a name="line.251"></a>
<span class="sourceLineNo">252</span> case 'l':<a name="line.252"></a>
<span class="sourceLineNo">253</span> switch (to) {<a name="line.253"></a>
<span class="sourceLineNo">254</span> case 'i':<a name="line.254"></a>
<span class="sourceLineNo">255</span> return (ConvertInstruction) setOpcode(Constants.L2I);<a name="line.255"></a>
<span class="sourceLineNo">256</span> case 'f':<a name="line.256"></a>
<span class="sourceLineNo">257</span> return (ConvertInstruction) setOpcode(Constants.L2F);<a name="line.257"></a>
<span class="sourceLineNo">258</span> case 'd':<a name="line.258"></a>
<span class="sourceLineNo">259</span> return (ConvertInstruction) setOpcode(Constants.L2D);<a name="line.259"></a>
<span class="sourceLineNo">260</span> }<a name="line.260"></a>
<span class="sourceLineNo">261</span> case 'f':<a name="line.261"></a>
<span class="sourceLineNo">262</span> switch (to) {<a name="line.262"></a>
<span class="sourceLineNo">263</span> case 'i':<a name="line.263"></a>
<span class="sourceLineNo">264</span> return (ConvertInstruction) setOpcode(Constants.F2I);<a name="line.264"></a>
<span class="sourceLineNo">265</span> case 'l':<a name="line.265"></a>
<span class="sourceLineNo">266</span> return (ConvertInstruction) setOpcode(Constants.F2L);<a name="line.266"></a>
<span class="sourceLineNo">267</span> case 'd':<a name="line.267"></a>
<span class="sourceLineNo">268</span> return (ConvertInstruction) setOpcode(Constants.F2D);<a name="line.268"></a>
<span class="sourceLineNo">269</span> }<a name="line.269"></a>
<span class="sourceLineNo">270</span> case 'd':<a name="line.270"></a>
<span class="sourceLineNo">271</span> switch (to) {<a name="line.271"></a>
<span class="sourceLineNo">272</span> case 'i':<a name="line.272"></a>
<span class="sourceLineNo">273</span> return (ConvertInstruction) setOpcode(Constants.D2I);<a name="line.273"></a>
<span class="sourceLineNo">274</span> case 'l':<a name="line.274"></a>
<span class="sourceLineNo">275</span> return (ConvertInstruction) setOpcode(Constants.D2L);<a name="line.275"></a>
<span class="sourceLineNo">276</span> case 'f':<a name="line.276"></a>
<span class="sourceLineNo">277</span> return (ConvertInstruction) setOpcode(Constants.D2F);<a name="line.277"></a>
<span class="sourceLineNo">278</span> }<a name="line.278"></a>
<span class="sourceLineNo">279</span> default:<a name="line.279"></a>
<span class="sourceLineNo">280</span> throw new IllegalStateException();<a name="line.280"></a>
<span class="sourceLineNo">281</span> }<a name="line.281"></a>
<span class="sourceLineNo">282</span> }<a name="line.282"></a>
<span class="sourceLineNo">283</span><a name="line.283"></a>
<span class="sourceLineNo">284</span> /**<a name="line.284"></a>
<span class="sourceLineNo">285</span> * Set the type being converted from. Types that have no direct<a name="line.285"></a>
<span class="sourceLineNo">286</span> * support will be converted accordingly.<a name="line.286"></a>
<span class="sourceLineNo">287</span> *<a name="line.287"></a>
<span class="sourceLineNo">288</span> * @return this instruction, for method chaining<a name="line.288"></a>
<span class="sourceLineNo">289</span> */<a name="line.289"></a>
<span class="sourceLineNo">290</span> public ConvertInstruction setFromType(Class type) {<a name="line.290"></a>
<span class="sourceLineNo">291</span> if (type == null)<a name="line.291"></a>
<span class="sourceLineNo">292</span> return setFromType((String) null);<a name="line.292"></a>
<span class="sourceLineNo">293</span> return setFromType(type.getName());<a name="line.293"></a>
<span class="sourceLineNo">294</span> }<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> * Set the type being converted from. Types that have no direct<a name="line.297"></a>
<span class="sourceLineNo">298</span> * support will be converted accordingly.<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 ConvertInstruction setFromType(BCClass type) {<a name="line.302"></a>
<span class="sourceLineNo">303</span> if (type == null)<a name="line.303"></a>
<span class="sourceLineNo">304</span> return setFromType((String) null);<a name="line.304"></a>
<span class="sourceLineNo">305</span> return setFromType(type.getName());<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> /**<a name="line.308"></a>
<span class="sourceLineNo">309</span> * ConvertInstructions are equal if the types they convert between are<a name="line.309"></a>
<span class="sourceLineNo">310</span> * either equal or unset.<a name="line.310"></a>
<span class="sourceLineNo">311</span> */<a name="line.311"></a>
<span class="sourceLineNo">312</span> public boolean equalsInstruction(Instruction other) {<a name="line.312"></a>
<span class="sourceLineNo">313</span> if (other == this)<a name="line.313"></a>
<span class="sourceLineNo">314</span> return true;<a name="line.314"></a>
<span class="sourceLineNo">315</span> if (!(other instanceof ConvertInstruction))<a name="line.315"></a>
<span class="sourceLineNo">316</span> return false;<a name="line.316"></a>
<span class="sourceLineNo">317</span><a name="line.317"></a>
<span class="sourceLineNo">318</span> ConvertInstruction ins = (ConvertInstruction) other;<a name="line.318"></a>
<span class="sourceLineNo">319</span> if (getOpcode() != Constants.NOP && getOpcode() == ins.getOpcode())<a name="line.319"></a>
<span class="sourceLineNo">320</span> return true;<a name="line.320"></a>
<span class="sourceLineNo">321</span><a name="line.321"></a>
<span class="sourceLineNo">322</span> String type = getTypeName();<a name="line.322"></a>
<span class="sourceLineNo">323</span> String otherType = ins.getTypeName();<a name="line.323"></a>
<span class="sourceLineNo">324</span> if (!(type == null || otherType == null || type.equals(otherType)))<a name="line.324"></a>
<span class="sourceLineNo">325</span> return false;<a name="line.325"></a>
<span class="sourceLineNo">326</span><a name="line.326"></a>
<span class="sourceLineNo">327</span> type = getFromTypeName();<a name="line.327"></a>
<span class="sourceLineNo">328</span> otherType = ins.getFromTypeName();<a name="line.328"></a>
<span class="sourceLineNo">329</span> return type == null || otherType == null || type.equals(otherType);<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.enterConvertInstruction(this);<a name="line.333"></a>
<span class="sourceLineNo">334</span> visit.exitConvertInstruction(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> ConvertInstruction ins = (ConvertInstruction) orig;<a name="line.339"></a>
<span class="sourceLineNo">340</span> _toType = ins._toType;<a name="line.340"></a>
<span class="sourceLineNo">341</span> _fromType = ins._fromType;<a name="line.341"></a>
<span class="sourceLineNo">342</span> }<a name="line.342"></a>
<span class="sourceLineNo">343</span>}<a name="line.343"></a>
</pre>
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