RawLocation::Actions
RawLocation::do_conform_to(int my_index, RawLocation* other, int other_index,
RawLocation::Actions allowed_actions) {
// make sure object registers and locations have object values
if (other->stack_type() == T_OBJECT && stack_type() != T_OBJECT) {
// Conformance code makes it so that this is no longer necessary.
SHOULD_NOT_REACH_HERE();
#if NOT_CURRENTLY_USED
// if we clear an cached object location there's no need to clear
// any registers, since the register cache (due to type conflicts) is
// guaranteed never to be used again
if (other.is_flushed() || other.is_cached()) {
code_generator()->clear_object_location(index());
} else {
GUARANTEE(other.is_changed(), "only case left");
Value other_value(other.type());
other.read_value(other_value);
Oop::Raw null_obj;
code_generator()->move(other_value, &null_obj);
}
return;
#endif
}
// compute the merge action
const Actions required_actions = merge_actions(other);
const Actions actions = required_actions & allowed_actions;
// handle loads/stores from/to locations
if (actions & LOC_LOAD) {
other->update_cache(other_index);
}
if (actions & LOC_STORE) {
write_changes(my_index);
}
// handle register stores
if (actions & REG_STORE && other->in_register()) {
// declare & read values for both source and destination
const Value this_value (this, my_index );
const Value other_value(other, other_index);
// do the register store
if (!other->is_register_identical_to(my_index, this, other_index)) {
code_generator()->move(other_value, this_value);
}
}
return required_actions & ~allowed_actions;
}
jsonpack_token_type scanner::next()
{
switch ( _c )
{
case '{':
advance();
return JTK_OPEN_KEY;
break;
case '}':
advance();
return JTK_CLOSE_KEY;
break;
case '[':
advance();
return JTK_OPEN_BRACKET;
break;
case ']':
advance();
return JTK_CLOSE_BRACKET;
break;
case ':':
advance();
return JTK_COLON;
break;
case ',':
advance();
return JTK_COMMA;
break;
case '\'':
return string_literal();
break;
case '"':
return string_literal();
break;
default:
if(std::isspace( _c ) )
{
advance();
return next();
}
else
{
return other_value();
}
}
}
