mixinOop.cpp

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/* Copyright 1994, 1995 LongView Technologies L.L.C. $Revision: 1.13 $ */
/* Copyright (c) 2006, Sun Microsystems, Inc.
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# include "incls/_precompiled.incl"
# include "incls/_mixinOop.cpp.incl"

int mixinOopDesc::inst_var_offset(symbolOop name, int non_indexable_size) const {
  objArrayOop array  = instVars();
  int         length = array->length(); 
  for (int index = 1; index <= length; index++) {
    if (array->obj_at(index) == name) {
      return non_indexable_size - (length - index + 1);
    }
  }
  return -1;
}

void mixinOopDesc::bootstrap_object(bootstrap* st) {
  memOopDesc::bootstrap_header(st);
  st->read_oop((oop*)&addr()->_methods);
  st->read_oop((oop*)&addr()->_inst_vars);
  st->read_oop((oop*)&addr()->_class_vars);
  st->read_oop((oop*)&addr()->_primary_invocation);
  st->read_oop((oop*)&addr()->_class_mixin);
  st->read_oop((oop*)&addr()->_installed);
  memOopDesc::bootstrap_body(st, header_size());
}

int mixinOopDesc::number_of_methods() const {
  return methods()->length();
}

methodOop mixinOopDesc::method_at(int index) const {
  return methodOop(methods()->obj_at(index));
}

void mixinOopDesc::add_method(methodOop method) {
  objArrayOop old_array = methods();
  symbolOop selector = method->selector();
  // Find out if a method with the same selector exists.
  for (int index = 1; index <= old_array->length(); index++) {
    assert(old_array->obj_at(index)->is_method(), "must be method");
    methodOop m = methodOop(old_array->obj_at(index));
    if (m->selector() == selector) {
      objArrayOop new_array = old_array->copy();
      new_array->obj_at_put(index, method);
      set_methods(new_array);
      return;
    }
  }
  // Extend the array
  set_methods(old_array->copy_add(method));
}

methodOop mixinOopDesc::remove_method_at(int index) {
  methodOop method = method_at(index);
  set_methods(methods()->copy_remove(index));
  return method;
}

bool mixinOopDesc::includes_method(methodOop method) {
  objArrayOop array = methods();
  for (int index = 1; index <= array->length(); index++) {
    methodOop m = methodOop(array->obj_at(index));
    if (m == method) return true;
  }
  return false;
}

int mixinOopDesc::number_of_instVars() const {
  return instVars()->length();
}

symbolOop mixinOopDesc::instVar_at(int index) const {
  return symbolOop(instVars()->obj_at(index));
}

void mixinOopDesc::add_instVar(symbolOop name) {
  objArrayOop old_array = instVars();
  // Find out if it already exists.
  for (int index = 1; index <= old_array->length(); index ++) {
    assert(old_array->obj_at(index)->is_symbol(), "must be symbol");
    if (old_array->obj_at(index) == name) return;
  }
  // Extend the array
  set_instVars(old_array->copy_add(name));
}

symbolOop mixinOopDesc::remove_instVar_at(int index) {
  symbolOop name = instVar_at(index);
  set_instVars(instVars()->copy_remove(index, 1));
  return name;
}

bool mixinOopDesc::includes_instVar(symbolOop name) {
  objArrayOop array = instVars();
  for (int index = 1; index <= array->length(); index++) {
    symbolOop elem = symbolOop(array->obj_at(index));
    if (elem == name) return true;
  }
  return false;
}

int mixinOopDesc::number_of_classVars() const {
  return classVars()->length();
}

symbolOop mixinOopDesc::classVar_at(int index) const {
  return symbolOop(classVars()->obj_at(index));
}

void mixinOopDesc::add_classVar(symbolOop name) {
  objArrayOop old_array = classVars();
  // Find out if it already exists.
  for (int index = 1; index <= old_array->length(); index++) {
    symbolOop elem = symbolOop(old_array->obj_at(index));
    if (elem == name) return;
  }
  // Extend the array
  set_classVars(old_array->copy_add(name));
}

symbolOop mixinOopDesc::remove_classVar_at(int index) {
  symbolOop name = classVar_at(index);
  set_classVars(classVars()->copy_remove(index));
  return name;
}


bool mixinOopDesc::includes_classVar(symbolOop name) {
  objArrayOop array = classVars();
  for (int index = 1; index <= array->length(); index++) {
    symbolOop elem = symbolOop(array->obj_at(index));
    if (elem == name) return true;
  }
  return false;
}

bool mixinOopDesc::is_installed() const {
  if (installed() == trueObj) return true;
  assert(installed() == falseObj, "verify installed");
  return false;
}

bool mixinOopDesc::has_primary_invocation() const {
  return primary_invocation()->is_klass();
}

void mixinOopDesc::apply_mixin(mixinOop m) {
  set_methods(m->methods());
}

void mixinOopDesc::customize_for(klassOop klass) {
  objArrayOop array = methods();
  for (int index = 1; index <= array->length(); index++) {
    methodOop m = methodOop(array->obj_at(index));
    m->customize_for(klass, this);
  }
}

void mixinOopDesc::uncustomize_methods() {
  objArrayOop array = methods();
  for (int index = 1; index <= array->length(); index++) {
    methodOop m = methodOop(array->obj_at(index));
    m->uncustomize_for(this);
  }
}

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