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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 serp.bytecode.lowlevel.*;<a name="line.3"></a>
<span class="sourceLineNo">004</span>import serp.bytecode.visitor.*;<a name="line.4"></a>
<span class="sourceLineNo">005</span>import serp.util.*;<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> * A field of a class.<a name="line.8"></a>
<span class="sourceLineNo">009</span> *<a name="line.9"></a>
<span class="sourceLineNo">010</span> * @author Abe White<a name="line.10"></a>
<span class="sourceLineNo">011</span> */<a name="line.11"></a>
<span class="sourceLineNo">012</span>public class BCField extends BCMember implements VisitAcceptor {<a name="line.12"></a>
<span class="sourceLineNo">013</span> BCField(BCClass owner) {<a name="line.13"></a>
<span class="sourceLineNo">014</span> super(owner);<a name="line.14"></a>
<span class="sourceLineNo">015</span> if (owner.isEnum())<a name="line.15"></a>
<span class="sourceLineNo">016</span> setEnum(true);<a name="line.16"></a>
<span class="sourceLineNo">017</span> }<a name="line.17"></a>
<span class="sourceLineNo">018</span><a name="line.18"></a>
<span class="sourceLineNo">019</span> /**<a name="line.19"></a>
<span class="sourceLineNo">020</span> * Manipulate the field access flags.<a name="line.20"></a>
<span class="sourceLineNo">021</span> */<a name="line.21"></a>
<span class="sourceLineNo">022</span> public boolean isVolatile() {<a name="line.22"></a>
<span class="sourceLineNo">023</span> return (getAccessFlags() & Constants.ACCESS_VOLATILE) > 0;<a name="line.23"></a>
<span class="sourceLineNo">024</span> }<a name="line.24"></a>
<span class="sourceLineNo">025</span><a name="line.25"></a>
<span class="sourceLineNo">026</span> /**<a name="line.26"></a>
<span class="sourceLineNo">027</span> * Manipulate the field access flags.<a name="line.27"></a>
<span class="sourceLineNo">028</span> */<a name="line.28"></a>
<span class="sourceLineNo">029</span> public void setVolatile(boolean on) {<a name="line.29"></a>
<span class="sourceLineNo">030</span> if (on)<a name="line.30"></a>
<span class="sourceLineNo">031</span> setAccessFlags(getAccessFlags() | Constants.ACCESS_VOLATILE);<a name="line.31"></a>
<span class="sourceLineNo">032</span> else<a name="line.32"></a>
<span class="sourceLineNo">033</span> setAccessFlags(getAccessFlags() & ~Constants.ACCESS_VOLATILE);<a name="line.33"></a>
<span class="sourceLineNo">034</span> }<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> * Manipulate the field access flags.<a name="line.37"></a>
<span class="sourceLineNo">038</span> */<a name="line.38"></a>
<span class="sourceLineNo">039</span> public boolean isTransient() {<a name="line.39"></a>
<span class="sourceLineNo">040</span> return (getAccessFlags() & Constants.ACCESS_TRANSIENT) > 0;<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> /**<a name="line.43"></a>
<span class="sourceLineNo">044</span> * Manipulate the field access flags.<a name="line.44"></a>
<span class="sourceLineNo">045</span> */<a name="line.45"></a>
<span class="sourceLineNo">046</span> public void setTransient(boolean on) {<a name="line.46"></a>
<span class="sourceLineNo">047</span> if (on)<a name="line.47"></a>
<span class="sourceLineNo">048</span> setAccessFlags(getAccessFlags() | Constants.ACCESS_TRANSIENT);<a name="line.48"></a>
<span class="sourceLineNo">049</span> else<a name="line.49"></a>
<span class="sourceLineNo">050</span> setAccessFlags(getAccessFlags() & ~Constants.ACCESS_TRANSIENT);<a name="line.50"></a>
<span class="sourceLineNo">051</span> }<a name="line.51"></a>
<span class="sourceLineNo">052</span><a name="line.52"></a>
<span class="sourceLineNo">053</span> /**<a name="line.53"></a>
<span class="sourceLineNo">054</span> * Manipulate the field access flags. Defaults to true for fields added<a name="line.54"></a>
<span class="sourceLineNo">055</span> * to enum classes.<a name="line.55"></a>
<span class="sourceLineNo">056</span> */<a name="line.56"></a>
<span class="sourceLineNo">057</span> public boolean isEnum() {<a name="line.57"></a>
<span class="sourceLineNo">058</span> return (getAccessFlags() & Constants.ACCESS_ENUM) > 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> * Manipulate the field access flags. Defaults to true for fields added<a name="line.62"></a>
<span class="sourceLineNo">063</span> * to enum classes.<a name="line.63"></a>
<span class="sourceLineNo">064</span> */<a name="line.64"></a>
<span class="sourceLineNo">065</span> public void setEnum(boolean on) {<a name="line.65"></a>
<span class="sourceLineNo">066</span> if (on)<a name="line.66"></a>
<span class="sourceLineNo">067</span> setAccessFlags(getAccessFlags() | Constants.ACCESS_ENUM);<a name="line.67"></a>
<span class="sourceLineNo">068</span> else<a name="line.68"></a>
<span class="sourceLineNo">069</span> setAccessFlags(getAccessFlags() & ~Constants.ACCESS_ENUM);<a name="line.69"></a>
<span class="sourceLineNo">070</span> }<a name="line.70"></a>
<span class="sourceLineNo">071</span><a name="line.71"></a>
<span class="sourceLineNo">072</span> /**<a name="line.72"></a>
<span class="sourceLineNo">073</span> * Return the name of the type of this field. The name will be given in<a name="line.73"></a>
<span class="sourceLineNo">074</span> * a form suitable for a {@link Class#forName} call.<a name="line.74"></a>
<span class="sourceLineNo">075</span> *<a name="line.75"></a>
<span class="sourceLineNo">076</span> * @see BCMember#getDescriptor<a name="line.76"></a>
<span class="sourceLineNo">077</span> */<a name="line.77"></a>
<span class="sourceLineNo">078</span> public String getTypeName() {<a name="line.78"></a>
<span class="sourceLineNo">079</span> return getProject().getNameCache().getExternalForm<a name="line.79"></a>
<span class="sourceLineNo">080</span> (getDescriptor(), false);<a name="line.80"></a>
<span class="sourceLineNo">081</span> }<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> * Return the {@link Class} object for the type of this field.<a name="line.84"></a>
<span class="sourceLineNo">085</span> */<a name="line.85"></a>
<span class="sourceLineNo">086</span> public Class getType() {<a name="line.86"></a>
<span class="sourceLineNo">087</span> return Strings.toClass(getTypeName(), getClassLoader());<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> * Return the bytecode for the type of this field.<a name="line.91"></a>
<span class="sourceLineNo">092</span> */<a name="line.92"></a>
<span class="sourceLineNo">093</span> public BCClass getTypeBC() {<a name="line.93"></a>
<span class="sourceLineNo">094</span> return getProject().loadClass(getTypeName(), getClassLoader());<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> /**<a name="line.97"></a>
<span class="sourceLineNo">098</span> * Set the name of the type of this field.<a name="line.98"></a>
<span class="sourceLineNo">099</span> *<a name="line.99"></a>
<span class="sourceLineNo">100</span> * @see BCMember#setDescriptor<a name="line.100"></a>
<span class="sourceLineNo">101</span> */<a name="line.101"></a>
<span class="sourceLineNo">102</span> public void setType(String type) {<a name="line.102"></a>
<span class="sourceLineNo">103</span> setDescriptor(type);<a name="line.103"></a>
<span class="sourceLineNo">104</span> }<a name="line.104"></a>
<span class="sourceLineNo">105</span><a name="line.105"></a>
<span class="sourceLineNo">106</span> /**<a name="line.106"></a>
<span class="sourceLineNo">107</span> * Set the type of this field.<a name="line.107"></a>
<span class="sourceLineNo">108</span> *<a name="line.108"></a>
<span class="sourceLineNo">109</span> * @see BCMember#setDescriptor<a name="line.109"></a>
<span class="sourceLineNo">110</span> */<a name="line.110"></a>
<span class="sourceLineNo">111</span> public void setType(Class type) {<a name="line.111"></a>
<span class="sourceLineNo">112</span> setType(type.getName());<a name="line.112"></a>
<span class="sourceLineNo">113</span> }<a name="line.113"></a>
<span class="sourceLineNo">114</span><a name="line.114"></a>
<span class="sourceLineNo">115</span> /**<a name="line.115"></a>
<span class="sourceLineNo">116</span> * Set the type of this field.<a name="line.116"></a>
<span class="sourceLineNo">117</span> *<a name="line.117"></a>
<span class="sourceLineNo">118</span> * @see BCMember#setDescriptor<a name="line.118"></a>
<span class="sourceLineNo">119</span> */<a name="line.119"></a>
<span class="sourceLineNo">120</span> public void setType(BCClass type) {<a name="line.120"></a>
<span class="sourceLineNo">121</span> setType(type.getName());<a name="line.121"></a>
<span class="sourceLineNo">122</span> }<a name="line.122"></a>
<span class="sourceLineNo">123</span><a name="line.123"></a>
<span class="sourceLineNo">124</span> /**<a name="line.124"></a>
<span class="sourceLineNo">125</span> * Return the constant value information for the field.<a name="line.125"></a>
<span class="sourceLineNo">126</span> * Acts internally through the {@link Attributes} interface.<a name="line.126"></a>
<span class="sourceLineNo">127</span> *<a name="line.127"></a>
<span class="sourceLineNo">128</span> * @param add if true, a new constant value attribute will be added<a name="line.128"></a>
<span class="sourceLineNo">129</span> * if not already present<a name="line.129"></a>
<span class="sourceLineNo">130</span> * @return the constant value information, or null if none and the<a name="line.130"></a>
<span class="sourceLineNo">131</span> * <code>add</code> param is set to false<a name="line.131"></a>
<span class="sourceLineNo">132</span> */<a name="line.132"></a>
<span class="sourceLineNo">133</span> public ConstantValue getConstantValue(boolean add) {<a name="line.133"></a>
<span class="sourceLineNo">134</span> ConstantValue constant = (ConstantValue) getAttribute<a name="line.134"></a>
<span class="sourceLineNo">135</span> (Constants.ATTR_CONST);<a name="line.135"></a>
<span class="sourceLineNo">136</span> if (!add || (constant != null))<a name="line.136"></a>
<span class="sourceLineNo">137</span> return constant;<a name="line.137"></a>
<span class="sourceLineNo">138</span> if (constant == null)<a name="line.138"></a>
<span class="sourceLineNo">139</span> constant = (ConstantValue) addAttribute(Constants.ATTR_CONST);<a name="line.139"></a>
<span class="sourceLineNo">140</span> return constant;<a name="line.140"></a>
<span class="sourceLineNo">141</span> }<a name="line.141"></a>
<span class="sourceLineNo">142</span><a name="line.142"></a>
<span class="sourceLineNo">143</span> /**<a name="line.143"></a>
<span class="sourceLineNo">144</span> * Remove the constant value attribute for the field.<a name="line.144"></a>
<span class="sourceLineNo">145</span> * Acts internally through the {@link Attributes} interface.<a name="line.145"></a>
<span class="sourceLineNo">146</span> *<a name="line.146"></a>
<span class="sourceLineNo">147</span> * @return true if there was a value to remove<a name="line.147"></a>
<span class="sourceLineNo">148</span> */<a name="line.148"></a>
<span class="sourceLineNo">149</span> public boolean removeConstantValue() {<a name="line.149"></a>
<span class="sourceLineNo">150</span> return removeAttribute(Constants.ATTR_CONST);<a name="line.150"></a>
<span class="sourceLineNo">151</span> }<a name="line.151"></a>
<span class="sourceLineNo">152</span><a name="line.152"></a>
<span class="sourceLineNo">153</span> public void acceptVisit(BCVisitor visit) {<a name="line.153"></a>
<span class="sourceLineNo">154</span> visit.enterBCField(this);<a name="line.154"></a>
<span class="sourceLineNo">155</span> visitAttributes(visit);<a name="line.155"></a>
<span class="sourceLineNo">156</span> visit.exitBCField(this);<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> void initialize(String name, String descriptor) {<a name="line.159"></a>
<span class="sourceLineNo">160</span> super.initialize(name, descriptor);<a name="line.160"></a>
<span class="sourceLineNo">161</span> makePrivate();<a name="line.161"></a>
<span class="sourceLineNo">162</span> }<a name="line.162"></a>
<span class="sourceLineNo">163</span>}<a name="line.163"></a>
</pre>
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