void
set_java_signature (tree type, tree sig)
{
tree old_sig;
while (TREE_CODE (type) == POINTER_TYPE)
type = TREE_TYPE (type);
MAYBE_CREATE_TYPE_TYPE_LANG_SPECIFIC (type);
old_sig = TYPE_SIGNATURE (type);
if (old_sig != NULL_TREE && old_sig != sig)
abort ();
TYPE_SIGNATURE (type) = sig;
#if 0 /* careful about METHOD_TYPE */
if (IDENTIFIER_SIGNATURE_TYPE (sig) == NULL_TREE && TREE_PERMANENT (type))
IDENTIFIER_SIGNATURE_TYPE (sig) = type;
#endif
}
/*
* Constructors for pointer, array and function types.
* (RECORD_TYPE, UNION_TYPE and ENUMERAL_TYPE nodes are
* constructed by language-dependent code, not here.)
*
* Construct, lay out and return the type of pointers
* to TO_TYPE. If such a type has already been
* constructed, reuse it.
*/
tree
build_pointer_type (tree to_type)
{
register tree t = TYPE_POINTER_TO (to_type);
register OBSTACK *ambient_obstack = current_obstack;
register OBSTACK *ambient_saveable_obstack = saveable_obstack;
/*
* First, if we already have a type for
* pointers to TO_TYPE, use it.
*/
if (t)
return t;
/*
* We need a new one.
* If TO_TYPE is permanent, make this permanent too.
*/
if (TREE_PERMANENT (to_type))
{
current_obstack = &permanent_obstack;
saveable_obstack = &permanent_obstack;
}
t = make_node (POINTER_TYPE);
TREE_TYPE (t) = to_type;
/*
* Record this type as the pointer to TO_TYPE.
*/
TYPE_POINTER_TO (to_type) = t;
/*
* Lay out the type. This function has many callers
* that are concerned with expression-construction,
* and this simplifies them all. Also, it guarantees
* the TYPE_SIZE is permanent if the type is.
*/
layout_type (t);
current_obstack = ambient_obstack;
saveable_obstack = ambient_saveable_obstack;
return (t);
} /* end build_pointer_type */
/*
* Return a type like TYPE except that its TREE_READONLY
* is CONSTP and its TREE_VOLATILE is VOLATILEP.
*
* Such variant types already made are recorded so that
* duplicates are not made.
*
* A variant types should never be used as the type of
* an expression. Always copy the variant information into
* the TREE_READONLY and TREE_VOLATILE of the expression,
* and then give the expression as its type the
* "main variant", the variant whose TREE_READONLY
* and TREE_VOLATILE are zero. Use TYPE_MAIN_VARIANT
* to find the main variant.
*/
tree
build_type_variant (tree type, int constp, int volatilep)
{
register tree t, m = TYPE_MAIN_VARIANT (type);
register OBSTACK *ambient_obstack = current_obstack;
/*
* Treat any nonzero argument as 1.
*/
constp = !!constp;
volatilep = !!volatilep;
/*
* First search the chain variants for one
* that is what we want.
*/
for (t = m; t; t = TYPE_NEXT_VARIANT (t))
{
if (constp == TREE_READONLY (t) && volatilep == TREE_VOLATILE (t))
return t;
}
/*
* We need a new one.
*/
current_obstack = TREE_PERMANENT (type) ?
&permanent_obstack : saveable_obstack;
t = copy_node (type);
TREE_READONLY (t) = constp;
TREE_VOLATILE (t) = volatilep;
TYPE_POINTER_TO (t) = NULL_TREE;
TYPE_REFERENCE_TO (t) = NULL_TREE;
/*
* Add this type to the chain of variants of TYPE.
*/
TYPE_NEXT_VARIANT (t) = TYPE_NEXT_VARIANT (m);
TYPE_NEXT_VARIANT (m) = t;
current_obstack = ambient_obstack;
return (t);
} /* end build_type_variant */
/*
****************************************************************
* Build the node for the type of references-to-TO_TYPE *
****************************************************************
*/
tree
build_reference_type (tree to_type)
{
register tree t = TYPE_REFERENCE_TO (to_type);
register OBSTACK *ambient_obstack = current_obstack;
register OBSTACK *ambient_saveable_obstack = saveable_obstack;
/*
* First, if we already have a type for pointers
* to TO_TYPE, use it.
*/
if (t)
return t;
/*
* We need a new one.
* If TO_TYPE is permanent, make this permanent too.
*/
if (TREE_PERMANENT (to_type))
{
current_obstack = &permanent_obstack;
saveable_obstack = &permanent_obstack;
}
t = make_node (REFERENCE_TYPE);
TREE_TYPE (t) = to_type;
/*
* Record this type as the pointer to TO_TYPE.
*/
TYPE_REFERENCE_TO (to_type) = t;
layout_type (t);
current_obstack = ambient_obstack;
saveable_obstack = ambient_saveable_obstack;
return (t);
} /* end build_reference_type */