@SuppressWarnings("unchecked")
public void visit(ClassFile file) throws Exception {
List<MethodInfo> methods = file.getMethods();
for (MethodInfo mi : methods) {
try {
CodeAttribute codeAttribute = mi.getCodeAttribute();
// ignore abstract methods
if (codeAttribute == null) {
continue;
}
final int maxStack = codeAttribute.getMaxStack();
int modified = 0;
for (MethodRewriter mr : rewriters) {
modified += mr.visit(mi);
}
if (modified != 0) {
codeAttribute.setMaxStack(maxStack + modified);
}
} catch (Exception e) {
throw new IllegalStateException("Cannot rewrite method: " + mi, e);
}
}
}
/**
* Constructs a copy of <code>Code_attribute</code>. Specified class names are replaced during the
* copy.
*
* @param cp constant pool table.
* @param src source Code attribute.
* @param classnames pairs of replaced and substituted class names.
*/
private CodeAttribute(ConstPool cp, CodeAttribute src, Map classnames) throws BadBytecode {
super(cp, tag);
maxStack = src.getMaxStack();
maxLocals = src.getMaxLocals();
exceptions = src.getExceptionTable().copy(cp, classnames);
attributes = new ArrayList();
List src_attr = src.getAttributes();
int num = src_attr.size();
for (int i = 0; i < num; ++i) {
AttributeInfo ai = (AttributeInfo) src_attr.get(i);
attributes.add(ai.copy(cp, classnames));
}
info = src.copyCode(cp, classnames, exceptions, this);
}