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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>import java.util.*;<a name="line.4"></a>
<span class="sourceLineNo">005</span><a name="line.5"></a>
<span class="sourceLineNo">006</span>import serp.bytecode.visitor.*;<a name="line.6"></a>
<span class="sourceLineNo">007</span><a name="line.7"></a>
<span class="sourceLineNo">008</span>/**<a name="line.8"></a>
<span class="sourceLineNo">009</span> * The <code>newarray</code> instruction, which is used to create new<a name="line.9"></a>
<span class="sourceLineNo">010</span> * arrays of primitive types.<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 NewArrayInstruction extends TypedInstruction {<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> { void.class, int.class },<a name="line.16"></a>
<span class="sourceLineNo">017</span> { Object.class, int.class },<a name="line.17"></a>
<span class="sourceLineNo">018</span> };<a name="line.18"></a>
<span class="sourceLineNo">019</span> private int _code = -1;<a name="line.19"></a>
<span class="sourceLineNo">020</span><a name="line.20"></a>
<span class="sourceLineNo">021</span> NewArrayInstruction(Code owner) {<a name="line.21"></a>
<span class="sourceLineNo">022</span> super(owner, Constants.NEWARRAY);<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> int getLength() {<a name="line.25"></a>
<span class="sourceLineNo">026</span> return super.getLength() + 1;<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> public String getTypeName() {<a name="line.29"></a>
<span class="sourceLineNo">030</span> switch (getTypeCode()) {<a name="line.30"></a>
<span class="sourceLineNo">031</span> case Constants.ARRAY_BOOLEAN:<a name="line.31"></a>
<span class="sourceLineNo">032</span> return boolean.class.getName();<a name="line.32"></a>
<span class="sourceLineNo">033</span> case Constants.ARRAY_CHAR:<a name="line.33"></a>
<span class="sourceLineNo">034</span> return char.class.getName();<a name="line.34"></a>
<span class="sourceLineNo">035</span> case Constants.ARRAY_FLOAT:<a name="line.35"></a>
<span class="sourceLineNo">036</span> return float.class.getName();<a name="line.36"></a>
<span class="sourceLineNo">037</span> case Constants.ARRAY_DOUBLE:<a name="line.37"></a>
<span class="sourceLineNo">038</span> return double.class.getName();<a name="line.38"></a>
<span class="sourceLineNo">039</span> case Constants.ARRAY_BYTE:<a name="line.39"></a>
<span class="sourceLineNo">040</span> return byte.class.getName();<a name="line.40"></a>
<span class="sourceLineNo">041</span> case Constants.ARRAY_SHORT:<a name="line.41"></a>
<span class="sourceLineNo">042</span> return short.class.getName();<a name="line.42"></a>
<span class="sourceLineNo">043</span> case Constants.ARRAY_INT:<a name="line.43"></a>
<span class="sourceLineNo">044</span> return int.class.getName();<a name="line.44"></a>
<span class="sourceLineNo">045</span> case Constants.ARRAY_LONG:<a name="line.45"></a>
<span class="sourceLineNo">046</span> return long.class.getName();<a name="line.46"></a>
<span class="sourceLineNo">047</span> default:<a name="line.47"></a>
<span class="sourceLineNo">048</span> return null;<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><a name="line.51"></a>
<span class="sourceLineNo">052</span> public TypedInstruction setType(String type) {<a name="line.52"></a>
<span class="sourceLineNo">053</span> type = mapType(type, _mappings, true);<a name="line.53"></a>
<span class="sourceLineNo">054</span> if (type == null)<a name="line.54"></a>
<span class="sourceLineNo">055</span> return setTypeCode(-1);<a name="line.55"></a>
<span class="sourceLineNo">056</span><a name="line.56"></a>
<span class="sourceLineNo">057</span> switch (type.charAt(0)) {<a name="line.57"></a>
<span class="sourceLineNo">058</span> case 'b':<a name="line.58"></a>
<span class="sourceLineNo">059</span> if (boolean.class.getName().equals(type))<a name="line.59"></a>
<span class="sourceLineNo">060</span> return setTypeCode(Constants.ARRAY_BOOLEAN);<a name="line.60"></a>
<span class="sourceLineNo">061</span> return setTypeCode(Constants.ARRAY_BYTE);<a name="line.61"></a>
<span class="sourceLineNo">062</span> case 'c':<a name="line.62"></a>
<span class="sourceLineNo">063</span> return setTypeCode(Constants.ARRAY_CHAR);<a name="line.63"></a>
<span class="sourceLineNo">064</span> case 'f':<a name="line.64"></a>
<span class="sourceLineNo">065</span> return setTypeCode(Constants.ARRAY_FLOAT);<a name="line.65"></a>
<span class="sourceLineNo">066</span> case 'd':<a name="line.66"></a>
<span class="sourceLineNo">067</span> return setTypeCode(Constants.ARRAY_DOUBLE);<a name="line.67"></a>
<span class="sourceLineNo">068</span> case 's':<a name="line.68"></a>
<span class="sourceLineNo">069</span> return setTypeCode(Constants.ARRAY_SHORT);<a name="line.69"></a>
<span class="sourceLineNo">070</span> case 'i':<a name="line.70"></a>
<span class="sourceLineNo">071</span> return setTypeCode(Constants.ARRAY_INT);<a name="line.71"></a>
<span class="sourceLineNo">072</span> case 'l':<a name="line.72"></a>
<span class="sourceLineNo">073</span> return setTypeCode(Constants.ARRAY_LONG);<a name="line.73"></a>
<span class="sourceLineNo">074</span> default:<a name="line.74"></a>
<span class="sourceLineNo">075</span> throw new IllegalStateException();<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> /**<a name="line.79"></a>
<span class="sourceLineNo">080</span> * Return the array code used in the lowlevel bytecode, or -1 if unset.<a name="line.80"></a>
<span class="sourceLineNo">081</span> */<a name="line.81"></a>
<span class="sourceLineNo">082</span> public int getTypeCode() {<a name="line.82"></a>
<span class="sourceLineNo">083</span> return _code;<a name="line.83"></a>
<span class="sourceLineNo">084</span> }<a name="line.84"></a>
<span class="sourceLineNo">085</span><a name="line.85"></a>
<span class="sourceLineNo">086</span> /**<a name="line.86"></a>
<span class="sourceLineNo">087</span> * Set the array code used in the lowlevel bytecode.<a name="line.87"></a>
<span class="sourceLineNo">088</span> *<a name="line.88"></a>
<span class="sourceLineNo">089</span> * @return this instruction, for method chaining<a name="line.89"></a>
<span class="sourceLineNo">090</span> */<a name="line.90"></a>
<span class="sourceLineNo">091</span> public NewArrayInstruction setTypeCode(int code) {<a name="line.91"></a>
<span class="sourceLineNo">092</span> _code = code;<a name="line.92"></a>
<span class="sourceLineNo">093</span> return this;<a name="line.93"></a>
<span class="sourceLineNo">094</span> }<a name="line.94"></a>
<span class="sourceLineNo">095</span><a name="line.95"></a>
<span class="sourceLineNo">096</span> /**<a name="line.96"></a>
<span class="sourceLineNo">097</span> * NewArray instructions are equal if the array type is the same,<a name="line.97"></a>
<span class="sourceLineNo">098</span> * of if the array type of either is unset.<a name="line.98"></a>
<span class="sourceLineNo">099</span> */<a name="line.99"></a>
<span class="sourceLineNo">100</span> public boolean equalsInstruction(Instruction other) {<a name="line.100"></a>
<span class="sourceLineNo">101</span> if (this == other)<a name="line.101"></a>
<span class="sourceLineNo">102</span> return true;<a name="line.102"></a>
<span class="sourceLineNo">103</span> if (!(other instanceof NewArrayInstruction))<a name="line.103"></a>
<span class="sourceLineNo">104</span> return false;<a name="line.104"></a>
<span class="sourceLineNo">105</span><a name="line.105"></a>
<span class="sourceLineNo">106</span> NewArrayInstruction ins = (NewArrayInstruction) other;<a name="line.106"></a>
<span class="sourceLineNo">107</span> int code = getTypeCode();<a name="line.107"></a>
<span class="sourceLineNo">108</span> int otherCode = ins.getTypeCode();<a name="line.108"></a>
<span class="sourceLineNo">109</span> return code == -1 || otherCode == -1 || code == otherCode;<a name="line.109"></a>
<span class="sourceLineNo">110</span> }<a name="line.110"></a>
<span class="sourceLineNo">111</span><a name="line.111"></a>
<span class="sourceLineNo">112</span> public void acceptVisit(BCVisitor visit) {<a name="line.112"></a>
<span class="sourceLineNo">113</span> visit.enterNewArrayInstruction(this);<a name="line.113"></a>
<span class="sourceLineNo">114</span> visit.exitNewArrayInstruction(this);<a name="line.114"></a>
<span class="sourceLineNo">115</span> }<a name="line.115"></a>
<span class="sourceLineNo">116</span><a name="line.116"></a>
<span class="sourceLineNo">117</span> void read(Instruction orig) {<a name="line.117"></a>
<span class="sourceLineNo">118</span> super.read(orig);<a name="line.118"></a>
<span class="sourceLineNo">119</span> _code = ((NewArrayInstruction) orig).getTypeCode();<a name="line.119"></a>
<span class="sourceLineNo">120</span> }<a name="line.120"></a>
<span class="sourceLineNo">121</span><a name="line.121"></a>
<span class="sourceLineNo">122</span> void read(DataInput in) throws IOException {<a name="line.122"></a>
<span class="sourceLineNo">123</span> super.read(in);<a name="line.123"></a>
<span class="sourceLineNo">124</span> _code = in.readUnsignedByte();<a name="line.124"></a>
<span class="sourceLineNo">125</span> }<a name="line.125"></a>
<span class="sourceLineNo">126</span><a name="line.126"></a>
<span class="sourceLineNo">127</span> void write(DataOutput out) throws IOException {<a name="line.127"></a>
<span class="sourceLineNo">128</span> super.write(out);<a name="line.128"></a>
<span class="sourceLineNo">129</span> out.writeByte(_code);<a name="line.129"></a>
<span class="sourceLineNo">130</span> }<a name="line.130"></a>
<span class="sourceLineNo">131</span>}<a name="line.131"></a>
</pre>
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