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/* FJBG -- Fast Java Bytecode Generator
* Copyright 2002-2012 LAMP/EPFL
* @author Michel Schinz
*/
package ch.epfl.lamp.fjbg;
/**
* Type for Java methods. These types do not really exist in Java, but
* are provided here because they are useful in several places.
*
* @author Michel Schinz
* @version 1.0
*/
public class JMethodType extends JType {
protected final JType returnType;
protected final JType[] argTypes;
protected String signature = null;
public final static JMethodType ARGLESS_VOID_FUNCTION =
new JMethodType(JType.VOID, JType.EMPTY_ARRAY);
public JMethodType(JType returnType, JType[] argTypes) {
this.returnType = returnType;
this.argTypes = argTypes;
}
public JType getReturnType() { return returnType; }
public JType[] getArgumentTypes() { return argTypes; }
public int getSize() {
throw new UnsupportedOperationException();
}
public String getSignature() {
if (signature == null) {
StringBuffer buf = new StringBuffer();
buf.append('(');
for (int i = 0; i < argTypes.length; ++i)
buf.append(argTypes[i].getSignature());
buf.append(')');
buf.append(returnType.getSignature());
signature = buf.toString();
}
return signature;
}
public int getTag() { return T_UNKNOWN; }
public String toString() {
StringBuffer buf = new StringBuffer();
buf.append('(');
for (int i = 0; i < argTypes.length; ++i)
buf.append(argTypes[i].toString());
buf.append(')');
buf.append(returnType.toString());
return buf.toString();
}
public int getArgsSize() {
int size = 0;
for (int i = 0; i < argTypes.length; ++i)
size += argTypes[i].getSize();
return size;
}
public int getProducedStack() {
return returnType.getSize() - getArgsSize();
}
public boolean isCompatibleWith(JType other) {
return false;
}
public boolean equals(Object o) {
if (o instanceof JMethodType)
return ((JMethodType)o).getSignature().equals(this.getSignature());
else
return false;
}
public int hashCode() {
if (signature == null)
return 0;
else
return signature.hashCode();
}
}
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