Blame src/logic/amgc_unit_entities.c

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/**********************************************************/
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/*  apimagic: cparser-based API normalization utility     */
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/*  Copyright (C) 2015--2016  Z. Gilboa                   */
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/*  Released under GPLv2 and GPLv3; see COPYING.APIMAGIC. */
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/**********************************************************/
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#include <cparser/ast/ast_t.h>
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#include <cparser/ast/entity_t.h>
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#include <cparser/ast/type_t.h>
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#include <libfirm/tv.h>
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#include <apimagic/apimagic.h>
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struct amgc_unit_entities_impl {
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	struct amgc_define *		adefines;
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	struct amgc_entity *		aentities;
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	struct amgc_unit_entities	entities;
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};
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static int amgc_free_unit_entities_impl(
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	struct amgc_unit_entities_impl *entities,
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	int				status)
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{
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	if (entities->adefines)
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		free(entities->adefines);
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	if (entities->aentities)
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		free(entities->aentities);
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	free (entities);
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	return status;
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}
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int amgc_get_unit_entities(
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	const struct amgc_unit_ctx *	uctx,
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	struct amgc_unit_meta *		meta,
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	struct amgc_unit_entities **	pentities)
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{
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	struct amgc_unit_meta		umeta;
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	struct amgc_define *		adefine;
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	struct amgc_entity *		aentity;
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	struct amgc_unit_entities *	uentities;
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	union entity_t *		entity;
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	union type_t *			etype;
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	struct amgc_unit_entities_impl *entities;
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	size_t				ndefs;
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	size_t				nelements;
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	int				enumval;
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	int				ptrdepth;
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	if (!meta)
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		meta = &umeta;
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	if (amgc_init_unit_meta(uctx,meta))
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		return -1;
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	if (!(entities = calloc(1,sizeof(*entities))))
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		return -1;
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	/* use first element as a guard */
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	ndefs  = 1;
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	ndefs += meta->ndefines + 1;
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	nelements  = 1;
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	nelements += meta->nenums + 1;
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	nelements += meta->nenumvals + 1;
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	nelements += meta->ntypedefs + 1;
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	nelements += meta->nstructs + 1;
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	nelements += meta->nunions + 1;
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	nelements += meta->nfunctions + 1;
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	nelements += meta->ngenerated + 1;
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	if (!(entities->adefines = calloc(ndefs,sizeof(struct amgc_define))))
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		return amgc_free_unit_entities_impl(entities,-1);
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	if (!(entities->aentities = calloc(nelements,sizeof(struct amgc_entity))))
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		return amgc_free_unit_entities_impl(entities,-1);
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	adefine = &entities->adefines[1];
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	entities->entities.defines = adefine;
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	aentity = &entities->aentities[1];
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	entities->entities.enums = aentity;
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	aentity += meta->nenums + 1;
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	entities->entities.enumvals = aentity;
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	aentity += meta->nenumvals + 1;
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	entities->entities.typedefs = aentity;
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	aentity += meta->ntypedefs + 1;
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	entities->entities.structs = aentity;
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	aentity += meta->nstructs + 1;
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	entities->entities.unions = aentity;
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	aentity += meta->nunions + 1;
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	entities->entities.functions = aentity;
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	aentity += meta->nfunctions + 1;
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	entities->entities.generated = aentity;
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	aentity += meta->ngenerated + 1;
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	meta = &umeta;
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	memset(meta,0,sizeof(*meta));
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	entity    = uctx->ccunit->ast->scope.first_entity;
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	uentities = &entities->entities;
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	for (; entity; entity=entity->base.next) {
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		if (strcmp(*uctx->path,entity->base.pos.input_name))
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			continue;
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		if ((is_declaration(entity)) &&  (entity->declaration.implicit))
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			uentities->generated[meta->ngenerated++].entity = entity;
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		else {
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			switch (entity->kind) {
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				case ENTITY_ENUM:
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					uentities->enums[meta->nenums++].entity = entity;
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					break;
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				case ENTITY_ENUM_VALUE:
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					enumval = (int)get_tarval_long(entity->enum_value.tv);
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					uentities->enumvals[meta->nenumvals].entity  = entity;
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					uentities->enumvals[meta->nenumvals].enumval = enumval;
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					meta->nenumvals++;
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					break;
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				case ENTITY_TYPEDEF:
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					etype = entity->declaration.type;
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					ptrdepth = 0;
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					for (; etype->kind == TYPE_POINTER; etype=etype->pointer.points_to)
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						ptrdepth++;
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					uentities->typedefs[meta->ntypedefs].entity = entity;
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					uentities->typedefs[meta->ntypedefs].reftype = etype;
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					uentities->typedefs[meta->ntypedefs].ptrdepth = ptrdepth;
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					meta->ntypedefs++;
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					break;
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				case ENTITY_STRUCT:
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					if (entity->base.symbol || entity->compound.alias)
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						uentities->structs[meta->nstructs++].entity = entity;
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					break;
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				case ENTITY_UNION:
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					if (entity->base.symbol || entity->compound.alias)
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						uentities->unions[meta->nunions++].entity = entity;
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					break;
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				case ENTITY_FUNCTION:
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					uentities->functions[meta->nfunctions++].entity = entity;
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					break;
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				default:
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					break;
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			}
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		}
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	}
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	*pentities = uentities;
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	return 0;
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}
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void amgc_free_unit_entities(struct amgc_unit_entities * ctx)
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{
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	struct amgc_unit_entities_impl *ictx;
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	uintptr_t			addr;
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	if (ctx) {
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		addr = (uintptr_t)ctx - offsetof(struct amgc_unit_entities_impl,entities);
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		ictx = (struct amgc_unit_entities_impl *)addr;
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		amgc_free_unit_entities_impl(ictx,0);
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	}
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}