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Change {lookup,make}_reference_type API

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Parameterize lookup_reference_type() and make_reference_type() by the kind of
reference type we want to look up. Create two wrapper functions
lookup_{lvalue,rvalue}_reference_type() for lookup_reference_type() to simplify
the API. Change all callers to use the new API.

gdb/Changelog

	PR gdb/14441
	* dwarf2read.c (read_tag_reference_type): Use
	lookup_lvalue_reference_type() instead of lookup_reference_type().
	* eval.c (evaluate_subexp_standard): Likewise.
	* f-exp.y: Likewise.
	* gdbtypes.c (make_reference_type, lookup_reference_type):
	Generalize with rvalue reference types.
	(lookup_lvalue_reference_type, lookup_rvalue_reference_type): New
	convenience wrappers for lookup_reference_type().
	* gdbtypes.h (make_reference_type, lookup_reference_type): Add a
	reference kind parameter.
	(lookup_lvalue_reference_type, lookup_rvalue_reference_type): Add
	wrappers for lookup_reference_type().
	* guile/scm-type.c (gdbscm_type_reference): Use
	lookup_lvalue_reference_type() instead of lookup_reference_type().
	* guile/scm-value.c (gdbscm_value_dynamic_type): Likewise.
	* parse.c (follow_types): Likewise.
	* python/py-type.c (typy_reference, typy_lookup_type): Likewise.
	* python/py-value.c (valpy_get_dynamic_type, valpy_getitem):
	Likewise.
	* python/py-xmethods.c (gdbpy_get_xmethod_result_type)
	(gdbpy_invoke_xmethod): Likewise.
	* stabsread.c: Provide extra argument to make_reference_type()
	call.
	* valops.c (value_ref, value_rtti_indirect_type): Use
	lookup_lvalue_reference_type() instead of lookup_reference_type().
This commit is contained in:
Artemiy Volkov
2017-03-20 13:47:39 -07:00
committed by Keith Seitz
parent f9aeb8d499
commit 3b22433085
14 changed files with 85 additions and 26 deletions
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42
gdb/gdbtypes.c
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@@ -384,15 +384,21 @@ lookup_pointer_type (struct type *type)
/* Lookup a C++ `reference' to a type TYPE. TYPEPTR, if nonzero,
points to a pointer to memory where the reference type should be
stored. If *TYPEPTR is zero, update it to point to the reference
type we return. We allocate new memory if needed. */
type we return. We allocate new memory if needed. REFCODE denotes
the kind of reference type to lookup (lvalue or rvalue reference). */
struct type *
make_reference_type (struct type *type, struct type **typeptr)
make_reference_type (struct type *type, struct type **typeptr,
enum type_code refcode)
{
struct type *ntype; /* New type */
struct type **reftype;
struct type *chain;
ntype = TYPE_REFERENCE_TYPE (type);
gdb_assert (refcode == TYPE_CODE_REF || refcode == TYPE_CODE_RVALUE_REF);
ntype = (refcode == TYPE_CODE_REF ? TYPE_REFERENCE_TYPE (type)
: TYPE_RVALUE_REFERENCE_TYPE (type));
if (ntype)
{
@@ -421,7 +427,10 @@ make_reference_type (struct type *type, struct type **typeptr)
}
TYPE_TARGET_TYPE (ntype) = type;
TYPE_REFERENCE_TYPE (type) = ntype;
reftype = (refcode == TYPE_CODE_REF ? &TYPE_REFERENCE_TYPE (type)
: &TYPE_RVALUE_REFERENCE_TYPE (type));
*reftype = ntype;
/* FIXME! Assume the machine has only one representation for
references, and that it matches the (only) representation for
@@ -429,10 +438,9 @@ make_reference_type (struct type *type, struct type **typeptr)
TYPE_LENGTH (ntype) =
gdbarch_ptr_bit (get_type_arch (type)) / TARGET_CHAR_BIT;
TYPE_CODE (ntype) = TYPE_CODE_REF;
TYPE_CODE (ntype) = refcode;
if (!TYPE_REFERENCE_TYPE (type)) /* Remember it, if don't have one. */
TYPE_REFERENCE_TYPE (type) = ntype;
*reftype = ntype;
/* Update the length of all the other variants of this type. */
chain = TYPE_CHAIN (ntype);
@@ -449,9 +457,25 @@ make_reference_type (struct type *type, struct type **typeptr)
details. */
struct type *
lookup_reference_type (struct type *type)
lookup_reference_type (struct type *type, enum type_code refcode)
{
return make_reference_type (type, (struct type **) 0);
return make_reference_type (type, (struct type **) 0, refcode);
}
/* Lookup the lvalue reference type for the type TYPE. */
struct type *
lookup_lvalue_reference_type (struct type *type)
{
return lookup_reference_type (type, TYPE_CODE_REF);
}
/* Lookup the rvalue reference type for the type TYPE. */
struct type *
lookup_rvalue_reference_type (struct type *type)
{
return lookup_reference_type (type, TYPE_CODE_RVALUE_REF);
}
/* Lookup a function type that returns type TYPE. TYPEPTR, if