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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.lowlevel.*;<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> * An instruction that that loads a constant onto the stack.<a name="line.10"></a>
<span class="sourceLineNo">011</span> * The opcode represented by this instruction may change depending on the<a name="line.11"></a>
<span class="sourceLineNo">012</span> * type and value of the constant set. For example, if the constant value<a name="line.12"></a>
<span class="sourceLineNo">013</span> * is initially set to 5, the opcode will be <code>iconst5</code>; if later<a name="line.13"></a>
<span class="sourceLineNo">014</span> * incremented to 6, the opcode will be changed to <code>bipush(6)</code>.<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 ConstantInstruction extends TypedInstruction {<a name="line.18"></a>
<span class="sourceLineNo">019</span> private int _arg = -1;<a name="line.19"></a>
<span class="sourceLineNo">020</span><a name="line.20"></a>
<span class="sourceLineNo">021</span> ConstantInstruction(Code owner) {<a name="line.21"></a>
<span class="sourceLineNo">022</span> super(owner);<a name="line.22"></a>
<span class="sourceLineNo">023</span> }<a name="line.23"></a>
<span class="sourceLineNo">024</span><a name="line.24"></a>
<span class="sourceLineNo">025</span> ConstantInstruction(Code owner, int opcode) {<a name="line.25"></a>
<span class="sourceLineNo">026</span> super(owner, opcode);<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> switch (getOpcode()) {<a name="line.30"></a>
<span class="sourceLineNo">031</span> case Constants.BIPUSH:<a name="line.31"></a>
<span class="sourceLineNo">032</span> case Constants.LDC:<a name="line.32"></a>
<span class="sourceLineNo">033</span> return super.getLength() + 1;<a name="line.33"></a>
<span class="sourceLineNo">034</span> case Constants.SIPUSH:<a name="line.34"></a>
<span class="sourceLineNo">035</span> case Constants.LDCW:<a name="line.35"></a>
<span class="sourceLineNo">036</span> case Constants.LDC2W:<a name="line.36"></a>
<span class="sourceLineNo">037</span> return super.getLength() + 2;<a name="line.37"></a>
<span class="sourceLineNo">038</span> default:<a name="line.38"></a>
<span class="sourceLineNo">039</span> return super.getLength();<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> public int getStackChange() {<a name="line.43"></a>
<span class="sourceLineNo">044</span> String type = getTypeName();<a name="line.44"></a>
<span class="sourceLineNo">045</span> if (double.class.getName().equals(type) <a name="line.45"></a>
<span class="sourceLineNo">046</span> || long.class.getName().equals(type))<a name="line.46"></a>
<span class="sourceLineNo">047</span> return 2;<a name="line.47"></a>
<span class="sourceLineNo">048</span> return 1;<a name="line.48"></a>
<span class="sourceLineNo">049</span> }<a name="line.49"></a>
<span class="sourceLineNo">050</span><a name="line.50"></a>
<span class="sourceLineNo">051</span> public int getLogicalStackChange() {<a name="line.51"></a>
<span class="sourceLineNo">052</span> return 1;<a name="line.52"></a>
<span class="sourceLineNo">053</span> }<a name="line.53"></a>
<span class="sourceLineNo">054</span><a name="line.54"></a>
<span class="sourceLineNo">055</span> public String getTypeName() {<a name="line.55"></a>
<span class="sourceLineNo">056</span> int opcode = getOpcode();<a name="line.56"></a>
<span class="sourceLineNo">057</span> switch (opcode) {<a name="line.57"></a>
<span class="sourceLineNo">058</span> case Constants.NOP:<a name="line.58"></a>
<span class="sourceLineNo">059</span> return null;<a name="line.59"></a>
<span class="sourceLineNo">060</span> case Constants.ACONSTNULL:<a name="line.60"></a>
<span class="sourceLineNo">061</span> return Object.class.getName();<a name="line.61"></a>
<span class="sourceLineNo">062</span> case Constants.ICONSTM1:<a name="line.62"></a>
<span class="sourceLineNo">063</span> case Constants.ICONST0:<a name="line.63"></a>
<span class="sourceLineNo">064</span> case Constants.ICONST1:<a name="line.64"></a>
<span class="sourceLineNo">065</span> case Constants.ICONST2:<a name="line.65"></a>
<span class="sourceLineNo">066</span> case Constants.ICONST3:<a name="line.66"></a>
<span class="sourceLineNo">067</span> case Constants.ICONST4:<a name="line.67"></a>
<span class="sourceLineNo">068</span> case Constants.ICONST5:<a name="line.68"></a>
<span class="sourceLineNo">069</span> case Constants.BIPUSH:<a name="line.69"></a>
<span class="sourceLineNo">070</span> case Constants.SIPUSH:<a name="line.70"></a>
<span class="sourceLineNo">071</span> return int.class.getName();<a name="line.71"></a>
<span class="sourceLineNo">072</span> case Constants.LCONST0:<a name="line.72"></a>
<span class="sourceLineNo">073</span> case Constants.LCONST1:<a name="line.73"></a>
<span class="sourceLineNo">074</span> return long.class.getName();<a name="line.74"></a>
<span class="sourceLineNo">075</span> case Constants.FCONST0:<a name="line.75"></a>
<span class="sourceLineNo">076</span> case Constants.FCONST1:<a name="line.76"></a>
<span class="sourceLineNo">077</span> case Constants.FCONST2:<a name="line.77"></a>
<span class="sourceLineNo">078</span> return float.class.getName();<a name="line.78"></a>
<span class="sourceLineNo">079</span> case Constants.DCONST0:<a name="line.79"></a>
<span class="sourceLineNo">080</span> case Constants.DCONST1:<a name="line.80"></a>
<span class="sourceLineNo">081</span> return double.class.getName();<a name="line.81"></a>
<span class="sourceLineNo">082</span> }<a name="line.82"></a>
<span class="sourceLineNo">083</span><a name="line.83"></a>
<span class="sourceLineNo">084</span> Entry entry = getPool().getEntry(_arg);<a name="line.84"></a>
<span class="sourceLineNo">085</span> switch (entry.getType()) {<a name="line.85"></a>
<span class="sourceLineNo">086</span> case Entry.UTF8:<a name="line.86"></a>
<span class="sourceLineNo">087</span> case Entry.STRING:<a name="line.87"></a>
<span class="sourceLineNo">088</span> return String.class.getName();<a name="line.88"></a>
<span class="sourceLineNo">089</span> case Entry.INT:<a name="line.89"></a>
<span class="sourceLineNo">090</span> return int.class.getName();<a name="line.90"></a>
<span class="sourceLineNo">091</span> case Entry.FLOAT:<a name="line.91"></a>
<span class="sourceLineNo">092</span> return float.class.getName();<a name="line.92"></a>
<span class="sourceLineNo">093</span> case Entry.LONG:<a name="line.93"></a>
<span class="sourceLineNo">094</span> return long.class.getName();<a name="line.94"></a>
<span class="sourceLineNo">095</span> case Entry.DOUBLE:<a name="line.95"></a>
<span class="sourceLineNo">096</span> return double.class.getName();<a name="line.96"></a>
<span class="sourceLineNo">097</span> case Entry.CLASS:<a name="line.97"></a>
<span class="sourceLineNo">098</span> return Class.class.getName();<a name="line.98"></a>
<span class="sourceLineNo">099</span> default:<a name="line.99"></a>
<span class="sourceLineNo">100</span> return null;<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><a name="line.103"></a>
<span class="sourceLineNo">104</span> public TypedInstruction setType(String type) {<a name="line.104"></a>
<span class="sourceLineNo">105</span> throw new UnsupportedOperationException("Use setValue");<a name="line.105"></a>
<span class="sourceLineNo">106</span> }<a name="line.106"></a>
<span class="sourceLineNo">107</span><a name="line.107"></a>
<span class="sourceLineNo">108</span> /**<a name="line.108"></a>
<span class="sourceLineNo">109</span> * Return the value of the constant as its wrapper type, or null if<a name="line.109"></a>
<span class="sourceLineNo">110</span> * not set. Returns class values as the class name.<a name="line.110"></a>
<span class="sourceLineNo">111</span> */<a name="line.111"></a>
<span class="sourceLineNo">112</span> public Object getValue() {<a name="line.112"></a>
<span class="sourceLineNo">113</span> int opcode = getOpcode();<a name="line.113"></a>
<span class="sourceLineNo">114</span> switch (opcode) {<a name="line.114"></a>
<span class="sourceLineNo">115</span> case Constants.NOP:<a name="line.115"></a>
<span class="sourceLineNo">116</span> case Constants.ACONSTNULL:<a name="line.116"></a>
<span class="sourceLineNo">117</span> return null;<a name="line.117"></a>
<span class="sourceLineNo">118</span> case Constants.ICONSTM1:<a name="line.118"></a>
<span class="sourceLineNo">119</span> case Constants.ICONST0:<a name="line.119"></a>
<span class="sourceLineNo">120</span> case Constants.ICONST1:<a name="line.120"></a>
<span class="sourceLineNo">121</span> case Constants.ICONST2:<a name="line.121"></a>
<span class="sourceLineNo">122</span> case Constants.ICONST3:<a name="line.122"></a>
<span class="sourceLineNo">123</span> case Constants.ICONST4:<a name="line.123"></a>
<span class="sourceLineNo">124</span> case Constants.ICONST5:<a name="line.124"></a>
<span class="sourceLineNo">125</span> return Numbers.valueOf(opcode - Constants.ICONST0);<a name="line.125"></a>
<span class="sourceLineNo">126</span> case Constants.LCONST0:<a name="line.126"></a>
<span class="sourceLineNo">127</span> case Constants.LCONST1:<a name="line.127"></a>
<span class="sourceLineNo">128</span> return Numbers.valueOf((long) (opcode - Constants.LCONST0));<a name="line.128"></a>
<span class="sourceLineNo">129</span> case Constants.FCONST0:<a name="line.129"></a>
<span class="sourceLineNo">130</span> case Constants.FCONST1:<a name="line.130"></a>
<span class="sourceLineNo">131</span> case Constants.FCONST2:<a name="line.131"></a>
<span class="sourceLineNo">132</span> return new Float(opcode - Constants.FCONST0);<a name="line.132"></a>
<span class="sourceLineNo">133</span> case Constants.DCONST0:<a name="line.133"></a>
<span class="sourceLineNo">134</span> case Constants.DCONST1:<a name="line.134"></a>
<span class="sourceLineNo">135</span> return new Double(opcode - Constants.DCONST0);<a name="line.135"></a>
<span class="sourceLineNo">136</span> case Constants.BIPUSH:<a name="line.136"></a>
<span class="sourceLineNo">137</span> case Constants.SIPUSH:<a name="line.137"></a>
<span class="sourceLineNo">138</span> return Numbers.valueOf(_arg);<a name="line.138"></a>
<span class="sourceLineNo">139</span> default:<a name="line.139"></a>
<span class="sourceLineNo">140</span> Entry entry = getPool().getEntry(_arg);<a name="line.140"></a>
<span class="sourceLineNo">141</span> Object val = ((ConstantEntry) entry).getConstant();<a name="line.141"></a>
<span class="sourceLineNo">142</span> if (entry.getType() == Entry.CLASS)<a name="line.142"></a>
<span class="sourceLineNo">143</span> return getProject().getNameCache().getExternalForm((String) val,<a name="line.143"></a>
<span class="sourceLineNo">144</span> false);<a name="line.144"></a>
<span class="sourceLineNo">145</span> return val;<a name="line.145"></a>
<span class="sourceLineNo">146</span> }<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> * Set the constant to the given value. The value should be<a name="line.150"></a>
<span class="sourceLineNo">151</span> * an instance of String, Integer, Long, Double, Float, Class, BCClass, or<a name="line.151"></a>
<span class="sourceLineNo">152</span> * null depending on the constant type. If the given value is not<a name="line.152"></a>
<span class="sourceLineNo">153</span> * supported directly, it will be converted accordingly.<a name="line.153"></a>
<span class="sourceLineNo">154</span> *<a name="line.154"></a>
<span class="sourceLineNo">155</span> * @return this instruction, for method chaining<a name="line.155"></a>
<span class="sourceLineNo">156</span> */<a name="line.156"></a>
<span class="sourceLineNo">157</span> public ConstantInstruction setValue(Object value) {<a name="line.157"></a>
<span class="sourceLineNo">158</span> boolean clsName = false;<a name="line.158"></a>
<span class="sourceLineNo">159</span> if (value instanceof Boolean)<a name="line.159"></a>
<span class="sourceLineNo">160</span> value = Numbers.valueOf((((Boolean) value).booleanValue()) ? 1 : 0);<a name="line.160"></a>
<span class="sourceLineNo">161</span> else if (value instanceof Character)<a name="line.161"></a>
<span class="sourceLineNo">162</span> value = Numbers.valueOf((int) ((Character) value).charValue());<a name="line.162"></a>
<span class="sourceLineNo">163</span> else if (value instanceof Byte)<a name="line.163"></a>
<span class="sourceLineNo">164</span> value = Numbers.valueOf(((Byte) value).intValue());<a name="line.164"></a>
<span class="sourceLineNo">165</span> else if (value instanceof Short)<a name="line.165"></a>
<span class="sourceLineNo">166</span> value = Numbers.valueOf(((Short) value).intValue());<a name="line.166"></a>
<span class="sourceLineNo">167</span> else if (value instanceof Class) {<a name="line.167"></a>
<span class="sourceLineNo">168</span> value = ((Class) value).getName();<a name="line.168"></a>
<span class="sourceLineNo">169</span> clsName = true;<a name="line.169"></a>
<span class="sourceLineNo">170</span> } else if (value instanceof BCClass) {<a name="line.170"></a>
<span class="sourceLineNo">171</span> value = ((BCClass) value).getName();<a name="line.171"></a>
<span class="sourceLineNo">172</span> clsName = true;<a name="line.172"></a>
<span class="sourceLineNo">173</span> } else if (value != null && !(value instanceof Number) <a name="line.173"></a>
<span class="sourceLineNo">174</span> && !(value instanceof String))<a name="line.174"></a>
<span class="sourceLineNo">175</span> throw new IllegalArgumentException("value = " + value);<a name="line.175"></a>
<span class="sourceLineNo">176</span><a name="line.176"></a>
<span class="sourceLineNo">177</span> calculateOpcode(value, clsName, false);<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> * Return the string value of this constant, or null if not set.<a name="line.182"></a>
<span class="sourceLineNo">183</span> */<a name="line.183"></a>
<span class="sourceLineNo">184</span> public String getStringValue() {<a name="line.184"></a>
<span class="sourceLineNo">185</span> return (String) getValue();<a name="line.185"></a>
<span class="sourceLineNo">186</span> }<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> * Return the int value of this constant, or 0 if not set.<a name="line.189"></a>
<span class="sourceLineNo">190</span> */<a name="line.190"></a>
<span class="sourceLineNo">191</span> public int getIntValue() {<a name="line.191"></a>
<span class="sourceLineNo">192</span> Object value = getValue();<a name="line.192"></a>
<span class="sourceLineNo">193</span> return (value == null) ? 0 : ((Number) value).intValue();<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 long value of this constant, or 0 if not set.<a name="line.197"></a>
<span class="sourceLineNo">198</span> */<a name="line.198"></a>
<span class="sourceLineNo">199</span> public long getLongValue() {<a name="line.199"></a>
<span class="sourceLineNo">200</span> Object value = getValue();<a name="line.200"></a>
<span class="sourceLineNo">201</span> return (value == null) ? 0L : ((Number) value).longValue();<a name="line.201"></a>
<span class="sourceLineNo">202</span> }<a name="line.202"></a>
<span class="sourceLineNo">203</span><a name="line.203"></a>
<span class="sourceLineNo">204</span> /**<a name="line.204"></a>
<span class="sourceLineNo">205</span> * Return the float value of this constant, or 0 if not set.<a name="line.205"></a>
<span class="sourceLineNo">206</span> */<a name="line.206"></a>
<span class="sourceLineNo">207</span> public float getFloatValue() {<a name="line.207"></a>
<span class="sourceLineNo">208</span> Object value = getValue();<a name="line.208"></a>
<span class="sourceLineNo">209</span> return (value == null) ? 0F : ((Number) value).floatValue();<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 double value of this constant, or 0 if not set.<a name="line.213"></a>
<span class="sourceLineNo">214</span> */<a name="line.214"></a>
<span class="sourceLineNo">215</span> public double getDoubleValue() {<a name="line.215"></a>
<span class="sourceLineNo">216</span> Object value = getValue();<a name="line.216"></a>
<span class="sourceLineNo">217</span> return (value == null) ? 0D : ((Number) value).doubleValue();<a name="line.217"></a>
<span class="sourceLineNo">218</span> }<a name="line.218"></a>
<span class="sourceLineNo">219</span><a name="line.219"></a>
<span class="sourceLineNo">220</span> /**<a name="line.220"></a>
<span class="sourceLineNo">221</span> * Return the class value of this constant, or null if not set.<a name="line.221"></a>
<span class="sourceLineNo">222</span> */<a name="line.222"></a>
<span class="sourceLineNo">223</span> public String getClassNameValue() {<a name="line.223"></a>
<span class="sourceLineNo">224</span> return (String) getValue();<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> /**<a name="line.227"></a>
<span class="sourceLineNo">228</span> * Set this constant to null.<a name="line.228"></a>
<span class="sourceLineNo">229</span> *<a name="line.229"></a>
<span class="sourceLineNo">230</span> * @return this instruction, for method chaining<a name="line.230"></a>
<span class="sourceLineNo">231</span> */<a name="line.231"></a>
<span class="sourceLineNo">232</span> public ConstantInstruction setNull() {<a name="line.232"></a>
<span class="sourceLineNo">233</span> calculateOpcode(null, false, false);<a name="line.233"></a>
<span class="sourceLineNo">234</span> return this;<a name="line.234"></a>
<span class="sourceLineNo">235</span> }<a name="line.235"></a>
<span class="sourceLineNo">236</span><a name="line.236"></a>
<span class="sourceLineNo">237</span> /**<a name="line.237"></a>
<span class="sourceLineNo">238</span> * Set the value of this constant.<a name="line.238"></a>
<span class="sourceLineNo">239</span> *<a name="line.239"></a>
<span class="sourceLineNo">240</span> * @return this instruction, for method chaining<a name="line.240"></a>
<span class="sourceLineNo">241</span> */<a name="line.241"></a>
<span class="sourceLineNo">242</span> public ConstantInstruction setValue(String value) {<a name="line.242"></a>
<span class="sourceLineNo">243</span> return setValue(value, false);<a name="line.243"></a>
<span class="sourceLineNo">244</span> }<a name="line.244"></a>
<span class="sourceLineNo">245</span><a name="line.245"></a>
<span class="sourceLineNo">246</span> public ConstantInstruction setValue(String value, boolean clsName) {<a name="line.246"></a>
<span class="sourceLineNo">247</span> calculateOpcode(value, clsName, false);<a name="line.247"></a>
<span class="sourceLineNo">248</span> return this;<a name="line.248"></a>
<span class="sourceLineNo">249</span> }<a name="line.249"></a>
<span class="sourceLineNo">250</span><a name="line.250"></a>
<span class="sourceLineNo">251</span> /**<a name="line.251"></a>
<span class="sourceLineNo">252</span> * Set the value of this constant.<a name="line.252"></a>
<span class="sourceLineNo">253</span> *<a name="line.253"></a>
<span class="sourceLineNo">254</span> * @return this instruction, for method chaining<a name="line.254"></a>
<span class="sourceLineNo">255</span> */<a name="line.255"></a>
<span class="sourceLineNo">256</span> public ConstantInstruction setValue(Class value) {<a name="line.256"></a>
<span class="sourceLineNo">257</span> if (value == null)<a name="line.257"></a>
<span class="sourceLineNo">258</span> return setNull();<a name="line.258"></a>
<span class="sourceLineNo">259</span> calculateOpcode(value.getName(), true, false);<a name="line.259"></a>
<span class="sourceLineNo">260</span> return this;<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> /**<a name="line.263"></a>
<span class="sourceLineNo">264</span> * Set the value of this constant.<a name="line.264"></a>
<span class="sourceLineNo">265</span> *<a name="line.265"></a>
<span class="sourceLineNo">266</span> * @return this instruction, for method chaining<a name="line.266"></a>
<span class="sourceLineNo">267</span> */<a name="line.267"></a>
<span class="sourceLineNo">268</span> public ConstantInstruction setValue(BCClass value) {<a name="line.268"></a>
<span class="sourceLineNo">269</span> if (value == null)<a name="line.269"></a>
<span class="sourceLineNo">270</span> return setNull();<a name="line.270"></a>
<span class="sourceLineNo">271</span> calculateOpcode(value.getName(), true, false);<a name="line.271"></a>
<span class="sourceLineNo">272</span> return this;<a name="line.272"></a>
<span class="sourceLineNo">273</span> }<a name="line.273"></a>
<span class="sourceLineNo">274</span><a name="line.274"></a>
<span class="sourceLineNo">275</span> /**<a name="line.275"></a>
<span class="sourceLineNo">276</span> * Set the value of this constant.<a name="line.276"></a>
<span class="sourceLineNo">277</span> *<a name="line.277"></a>
<span class="sourceLineNo">278</span> * @return this instruction, for method chaining<a name="line.278"></a>
<span class="sourceLineNo">279</span> */<a name="line.279"></a>
<span class="sourceLineNo">280</span> public ConstantInstruction setValue(int value) {<a name="line.280"></a>
<span class="sourceLineNo">281</span> calculateOpcode(Numbers.valueOf(value), false, false);<a name="line.281"></a>
<span class="sourceLineNo">282</span> return this;<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> /**<a name="line.285"></a>
<span class="sourceLineNo">286</span> * Set the value of this constant.<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 ConstantInstruction setValue(long value) {<a name="line.290"></a>
<span class="sourceLineNo">291</span> calculateOpcode(Numbers.valueOf(value), false, false);<a name="line.291"></a>
<span class="sourceLineNo">292</span> return this;<a name="line.292"></a>
<span class="sourceLineNo">293</span> }<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> * Set the value of this constant.<a name="line.296"></a>
<span class="sourceLineNo">297</span> *<a name="line.297"></a>
<span class="sourceLineNo">298</span> * @return this instruction, for method chaining<a name="line.298"></a>
<span class="sourceLineNo">299</span> */<a name="line.299"></a>
<span class="sourceLineNo">300</span> public ConstantInstruction setValue(float value) {<a name="line.300"></a>
<span class="sourceLineNo">301</span> calculateOpcode(new Float(value), false, false);<a name="line.301"></a>
<span class="sourceLineNo">302</span> return this;<a name="line.302"></a>
<span class="sourceLineNo">303</span> }<a name="line.303"></a>
<span class="sourceLineNo">304</span><a name="line.304"></a>
<span class="sourceLineNo">305</span> /**<a name="line.305"></a>
<span class="sourceLineNo">306</span> * Set the value of this constant.<a name="line.306"></a>
<span class="sourceLineNo">307</span> *<a name="line.307"></a>
<span class="sourceLineNo">308</span> * @return this instruction, for method chaining<a name="line.308"></a>
<span class="sourceLineNo">309</span> */<a name="line.309"></a>
<span class="sourceLineNo">310</span> public ConstantInstruction setValue(double value) {<a name="line.310"></a>
<span class="sourceLineNo">311</span> calculateOpcode(new Double(value), false, false);<a name="line.311"></a>
<span class="sourceLineNo">312</span> return this;<a name="line.312"></a>
<span class="sourceLineNo">313</span> }<a name="line.313"></a>
<span class="sourceLineNo">314</span><a name="line.314"></a>
<span class="sourceLineNo">315</span> /**<a name="line.315"></a>
<span class="sourceLineNo">316</span> * Set the value of this constant; note that this type is converted to int.<a name="line.316"></a>
<span class="sourceLineNo">317</span> *<a name="line.317"></a>
<span class="sourceLineNo">318</span> * @return this instruction, for method chaining<a name="line.318"></a>
<span class="sourceLineNo">319</span> */<a name="line.319"></a>
<span class="sourceLineNo">320</span> public ConstantInstruction setValue(boolean value) {<a name="line.320"></a>
<span class="sourceLineNo">321</span> return setValue((value) ? 1 : 0);<a name="line.321"></a>
<span class="sourceLineNo">322</span> }<a name="line.322"></a>
<span class="sourceLineNo">323</span><a name="line.323"></a>
<span class="sourceLineNo">324</span> /**<a name="line.324"></a>
<span class="sourceLineNo">325</span> * Set the value of this constant; note that this type is converted to int.<a name="line.325"></a>
<span class="sourceLineNo">326</span> *<a name="line.326"></a>
<span class="sourceLineNo">327</span> * @return this instruction, for method chaining<a name="line.327"></a>
<span class="sourceLineNo">328</span> */<a name="line.328"></a>
<span class="sourceLineNo">329</span> public ConstantInstruction setValue(short value) {<a name="line.329"></a>
<span class="sourceLineNo">330</span> return setValue((int) value);<a name="line.330"></a>
<span class="sourceLineNo">331</span> }<a name="line.331"></a>
<span class="sourceLineNo">332</span><a name="line.332"></a>
<span class="sourceLineNo">333</span> /**<a name="line.333"></a>
<span class="sourceLineNo">334</span> * Set the value of this constant; note that this type is converted to int.<a name="line.334"></a>
<span class="sourceLineNo">335</span> *<a name="line.335"></a>
<span class="sourceLineNo">336</span> * @return this instruction, for method chaining<a name="line.336"></a>
<span class="sourceLineNo">337</span> */<a name="line.337"></a>
<span class="sourceLineNo">338</span> public ConstantInstruction setValue(char value) {<a name="line.338"></a>
<span class="sourceLineNo">339</span> return setValue((int) value);<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> /**<a name="line.342"></a>
<span class="sourceLineNo">343</span> * ConstantInstructions are equal if the const they reference is the same,<a name="line.343"></a>
<span class="sourceLineNo">344</span> * or if the const of either is unset.<a name="line.344"></a>
<span class="sourceLineNo">345</span> */<a name="line.345"></a>
<span class="sourceLineNo">346</span> public boolean equalsInstruction(Instruction other) {<a name="line.346"></a>
<span class="sourceLineNo">347</span> if (this == other)<a name="line.347"></a>
<span class="sourceLineNo">348</span> return true;<a name="line.348"></a>
<span class="sourceLineNo">349</span> if (!(other instanceof ConstantInstruction))<a name="line.349"></a>
<span class="sourceLineNo">350</span> return false;<a name="line.350"></a>
<span class="sourceLineNo">351</span><a name="line.351"></a>
<span class="sourceLineNo">352</span> ConstantInstruction ci = (ConstantInstruction) other;<a name="line.352"></a>
<span class="sourceLineNo">353</span> Object value = getValue();<a name="line.353"></a>
<span class="sourceLineNo">354</span> Object otherValue = ci.getValue();<a name="line.354"></a>
<span class="sourceLineNo">355</span> if (value == null || otherValue == null)<a name="line.355"></a>
<span class="sourceLineNo">356</span> return true;<a name="line.356"></a>
<span class="sourceLineNo">357</span> if (getTypeName() == null || ci.getTypeName() == null)<a name="line.357"></a>
<span class="sourceLineNo">358</span> return true;<a name="line.358"></a>
<span class="sourceLineNo">359</span> return value.equals(otherValue) <a name="line.359"></a>
<span class="sourceLineNo">360</span> && getTypeName().equals(ci.getTypeName());<a name="line.360"></a>
<span class="sourceLineNo">361</span> }<a name="line.361"></a>
<span class="sourceLineNo">362</span><a name="line.362"></a>
<span class="sourceLineNo">363</span> public void acceptVisit(BCVisitor visit) {<a name="line.363"></a>
<span class="sourceLineNo">364</span> visit.enterConstantInstruction(this);<a name="line.364"></a>
<span class="sourceLineNo">365</span> visit.exitConstantInstruction(this);<a name="line.365"></a>
<span class="sourceLineNo">366</span> }<a name="line.366"></a>
<span class="sourceLineNo">367</span><a name="line.367"></a>
<span class="sourceLineNo">368</span> void read(Instruction orig) {<a name="line.368"></a>
<span class="sourceLineNo">369</span> super.read(orig);<a name="line.369"></a>
<span class="sourceLineNo">370</span> ConstantInstruction ci = (ConstantInstruction) orig;<a name="line.370"></a>
<span class="sourceLineNo">371</span> calculateOpcode(ci.getValue(), <a name="line.371"></a>
<span class="sourceLineNo">372</span> Class.class.getName().equals(ci.getTypeName()),<a name="line.372"></a>
<span class="sourceLineNo">373</span> ci.getOpcode() == Constants.LDCW);<a name="line.373"></a>
<span class="sourceLineNo">374</span> }<a name="line.374"></a>
<span class="sourceLineNo">375</span><a name="line.375"></a>
<span class="sourceLineNo">376</span> void read(DataInput in) throws IOException {<a name="line.376"></a>
<span class="sourceLineNo">377</span> super.read(in);<a name="line.377"></a>
<span class="sourceLineNo">378</span> switch (getOpcode()) {<a name="line.378"></a>
<span class="sourceLineNo">379</span> case Constants.BIPUSH:<a name="line.379"></a>
<span class="sourceLineNo">380</span> case Constants.LDC:<a name="line.380"></a>
<span class="sourceLineNo">381</span> _arg = in.readUnsignedByte();<a name="line.381"></a>
<span class="sourceLineNo">382</span> break;<a name="line.382"></a>
<span class="sourceLineNo">383</span> case Constants.SIPUSH:<a name="line.383"></a>
<span class="sourceLineNo">384</span> case Constants.LDCW:<a name="line.384"></a>
<span class="sourceLineNo">385</span> case Constants.LDC2W:<a name="line.385"></a>
<span class="sourceLineNo">386</span> _arg = in.readUnsignedShort();<a name="line.386"></a>
<span class="sourceLineNo">387</span> }<a name="line.387"></a>
<span class="sourceLineNo">388</span> }<a name="line.388"></a>
<span class="sourceLineNo">389</span><a name="line.389"></a>
<span class="sourceLineNo">390</span> void write(DataOutput out) throws IOException {<a name="line.390"></a>
<span class="sourceLineNo">391</span> super.write(out);<a name="line.391"></a>
<span class="sourceLineNo">392</span> switch (getOpcode()) {<a name="line.392"></a>
<span class="sourceLineNo">393</span> case Constants.BIPUSH:<a name="line.393"></a>
<span class="sourceLineNo">394</span> case Constants.LDC:<a name="line.394"></a>
<span class="sourceLineNo">395</span> out.writeByte(_arg);<a name="line.395"></a>
<span class="sourceLineNo">396</span> break;<a name="line.396"></a>
<span class="sourceLineNo">397</span> case Constants.SIPUSH:<a name="line.397"></a>
<span class="sourceLineNo">398</span> case Constants.LDCW:<a name="line.398"></a>
<span class="sourceLineNo">399</span> case Constants.LDC2W:<a name="line.399"></a>
<span class="sourceLineNo">400</span> out.writeShort(_arg);<a name="line.400"></a>
<span class="sourceLineNo">401</span> break;<a name="line.401"></a>
<span class="sourceLineNo">402</span> }<a name="line.402"></a>
<span class="sourceLineNo">403</span> }<a name="line.403"></a>
<span class="sourceLineNo">404</span><a name="line.404"></a>
<span class="sourceLineNo">405</span> private void calculateOpcode(Object value, boolean clsName, boolean wide) {<a name="line.405"></a>
<span class="sourceLineNo">406</span> int len = getLength();<a name="line.406"></a>
<span class="sourceLineNo">407</span> _arg = -1;<a name="line.407"></a>
<span class="sourceLineNo">408</span> if (value == null)<a name="line.408"></a>
<span class="sourceLineNo">409</span> setOpcode(Constants.ACONSTNULL);<a name="line.409"></a>
<span class="sourceLineNo">410</span> else if (clsName) {<a name="line.410"></a>
<span class="sourceLineNo">411</span> String name = getProject().getNameCache().getInternalForm((String) <a name="line.411"></a>
<span class="sourceLineNo">412</span> value, false);<a name="line.412"></a>
<span class="sourceLineNo">413</span> _arg = getPool().findClassEntry(name, true);<a name="line.413"></a>
<span class="sourceLineNo">414</span> setOpcode(Constants.LDCW);<a name="line.414"></a>
<span class="sourceLineNo">415</span> ensureBytecodeVersion();<a name="line.415"></a>
<span class="sourceLineNo">416</span> } else if (value instanceof Float) {<a name="line.416"></a>
<span class="sourceLineNo">417</span> float floatVal = ((Float) value).floatValue();<a name="line.417"></a>
<span class="sourceLineNo">418</span> if ((floatVal == 0) || (floatVal == 1) || (floatVal == 2))<a name="line.418"></a>
<span class="sourceLineNo">419</span> setOpcode(Constants.FCONST0 + (int) floatVal);<a name="line.419"></a>
<span class="sourceLineNo">420</span> else {<a name="line.420"></a>
<span class="sourceLineNo">421</span> _arg = getPool().findFloatEntry((float) floatVal, true);<a name="line.421"></a>
<span class="sourceLineNo">422</span> setOpcode((_arg > 255 || wide) ? Constants.LDCW <a name="line.422"></a>
<span class="sourceLineNo">423</span> : Constants.LDC);<a name="line.423"></a>
<span class="sourceLineNo">424</span> }<a name="line.424"></a>
<span class="sourceLineNo">425</span> } else if (value instanceof Long) {<a name="line.425"></a>
<span class="sourceLineNo">426</span> long longVal = ((Long) value).longValue();<a name="line.426"></a>
<span class="sourceLineNo">427</span> if (longVal == 0 || longVal == 1)<a name="line.427"></a>
<span class="sourceLineNo">428</span> setOpcode(Constants.LCONST0 + (int) longVal);<a name="line.428"></a>
<span class="sourceLineNo">429</span> else {<a name="line.429"></a>
<span class="sourceLineNo">430</span> _arg = getPool().findLongEntry(longVal, true);<a name="line.430"></a>
<span class="sourceLineNo">431</span> setOpcode(Constants.LDC2W);<a name="line.431"></a>
<span class="sourceLineNo">432</span> }<a name="line.432"></a>
<span class="sourceLineNo">433</span> } else if (value instanceof Double) {<a name="line.433"></a>
<span class="sourceLineNo">434</span> double doubleVal = ((Double) value).doubleValue();<a name="line.434"></a>
<span class="sourceLineNo">435</span> if (doubleVal == 0 || doubleVal == 1)<a name="line.435"></a>
<span class="sourceLineNo">436</span> setOpcode(Constants.DCONST0 + (int) doubleVal);<a name="line.436"></a>
<span class="sourceLineNo">437</span> else {<a name="line.437"></a>
<span class="sourceLineNo">438</span> _arg = getPool().findDoubleEntry(doubleVal, true);<a name="line.438"></a>
<span class="sourceLineNo">439</span> setOpcode(Constants.LDC2W);<a name="line.439"></a>
<span class="sourceLineNo">440</span> }<a name="line.440"></a>
<span class="sourceLineNo">441</span> } else if (value instanceof Integer) {<a name="line.441"></a>
<span class="sourceLineNo">442</span> int intVal = ((Integer) value).intValue();<a name="line.442"></a>
<span class="sourceLineNo">443</span> if (intVal >= -1 && intVal <= 5)<a name="line.443"></a>
<span class="sourceLineNo">444</span> setOpcode(Constants.ICONST0 + intVal);<a name="line.444"></a>
<span class="sourceLineNo">445</span> else if ((intVal >= -(2 << 6)) && (intVal < (2 << 6))) {<a name="line.445"></a>
<span class="sourceLineNo">446</span> setOpcode(Constants.BIPUSH);<a name="line.446"></a>
<span class="sourceLineNo">447</span> _arg = intVal;<a name="line.447"></a>
<span class="sourceLineNo">448</span> } else if (intVal >= -(2 << 14) && intVal < (2 << 14)) {<a name="line.448"></a>
<span class="sourceLineNo">449</span> setOpcode(Constants.SIPUSH);<a name="line.449"></a>
<span class="sourceLineNo">450</span> _arg = intVal;<a name="line.450"></a>
<span class="sourceLineNo">451</span> } else {<a name="line.451"></a>
<span class="sourceLineNo">452</span> _arg = getPool().findIntEntry(intVal, true);<a name="line.452"></a>
<span class="sourceLineNo">453</span> setOpcode((_arg > 255 || wide) ? Constants.LDCW <a name="line.453"></a>
<span class="sourceLineNo">454</span> : Constants.LDC);<a name="line.454"></a>
<span class="sourceLineNo">455</span> }<a name="line.455"></a>
<span class="sourceLineNo">456</span> } else if (value instanceof String) {<a name="line.456"></a>
<span class="sourceLineNo">457</span> _arg = getPool().findStringEntry((String) value, true);<a name="line.457"></a>
<span class="sourceLineNo">458</span> setOpcode((_arg > 255 || wide) ? Constants.LDCW : Constants.LDC);<a name="line.458"></a>
<span class="sourceLineNo">459</span> } else <a name="line.459"></a>
<span class="sourceLineNo">460</span> throw new IllegalArgumentException(String.valueOf(value));<a name="line.460"></a>
<span class="sourceLineNo">461</span><a name="line.461"></a>
<span class="sourceLineNo">462</span> if (len != getLength())<a name="line.462"></a>
<span class="sourceLineNo">463</span> invalidateByteIndexes();<a name="line.463"></a>
<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> /**<a name="line.466"></a>
<span class="sourceLineNo">467</span> * When adding class entries, make sure the bytecode spec supports them.<a name="line.467"></a>
<span class="sourceLineNo">468</span> */<a name="line.468"></a>
<span class="sourceLineNo">469</span> private void ensureBytecodeVersion() {<a name="line.469"></a>
<span class="sourceLineNo">470</span> BCClass bc = getCode().getMethod().getDeclarer();<a name="line.470"></a>
<span class="sourceLineNo">471</span> if (bc.getMajorVersion() < Constants.MAJOR_VERSION_JAVA5) {<a name="line.471"></a>
<span class="sourceLineNo">472</span> bc.setMajorVersion(Constants.MAJOR_VERSION_JAVA5);<a name="line.472"></a>
<span class="sourceLineNo">473</span> bc.setMinorVersion(Constants.MINOR_VERSION_JAVA5);<a name="line.473"></a>
<span class="sourceLineNo">474</span> }<a name="line.474"></a>
<span class="sourceLineNo">475</span> }<a name="line.475"></a>
<span class="sourceLineNo">476</span>}<a name="line.476"></a>
</pre>
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