X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;ds=sidebyside;f=entity.c;h=d828c8af8a60df33a2b1f2a6504d6c819b45930d;hb=bf92df408b5fef01d5ee065b02c1deb7e4289a5b;hp=a31b8865e6ba9bdbe478e8e9806ef636a21ee1bd;hpb=bc20f75554ba62fcbea337664cae66243ba974b4;p=cparser

diff --git a/entity.c b/entity.c
index a31b886..d828c8a 100644
--- a/entity.c
+++ b/entity.c
@@ -19,8 +19,13 @@
  */
 #include <config.h>
 
+#include <assert.h>
+
 #include "entity_t.h"
+#include "ast_t.h"
 #include "adt/error.h"
+#include "adt/util.h"
+#include "adt/strutil.h"
 
 const char *get_entity_kind_name(entity_kind_t kind)
 {
@@ -43,3 +48,60 @@ const char *get_entity_kind_name(entity_kind_t kind)
 
 	panic("Invalid entity kind encountered in get_entity_kind_name");
 }
+
+/**
+ * Returns the size of an entity node.
+ *
+ * @param kind  the entity kind
+ */
+static size_t get_entity_struct_size(entity_kind_t kind)
+{
+	static const size_t sizes[] = {
+		[ENTITY_VARIABLE]        = sizeof(variable_t),
+		[ENTITY_PARAMETER]       = sizeof(parameter_t),
+		[ENTITY_COMPOUND_MEMBER] = sizeof(compound_member_t),
+		[ENTITY_FUNCTION]        = sizeof(function_t),
+		[ENTITY_TYPEDEF]         = sizeof(typedef_t),
+		[ENTITY_STRUCT]          = sizeof(compound_t),
+		[ENTITY_UNION]           = sizeof(compound_t),
+		[ENTITY_ENUM]            = sizeof(enum_t),
+		[ENTITY_ENUM_VALUE]      = sizeof(enum_value_t),
+		[ENTITY_LABEL]           = sizeof(label_t),
+		[ENTITY_LOCAL_LABEL]     = sizeof(label_t),
+		[ENTITY_NAMESPACE]       = sizeof(namespace_t)
+	};
+	assert(kind < lengthof(sizes));
+	assert(sizes[kind] != 0);
+	return sizes[kind];
+}
+
+/**
+ * Allocate an entity of given kind and initialize all
+ * fields with zero.
+ *
+ * @param kind   the kind of the entity to allocate
+ */
+entity_t *allocate_entity_zero(entity_kind_t const kind, entity_namespace_t const namespc, symbol_t *const symbol)
+{
+	size_t    size       = get_entity_struct_size(kind);
+	entity_t *entity     = allocate_ast_zero(size);
+	entity->kind         = kind;
+	entity->base.namespc = namespc;
+	entity->base.symbol  = symbol;
+	return entity;
+}
+
+elf_visibility_tag_t get_elf_visibility_from_string(const char *string)
+{
+	if (streq(string, "default")) {
+		return ELF_VISIBILITY_DEFAULT;
+	} else if (streq(string, "hidden")) {
+		return ELF_VISIBILITY_HIDDEN;
+	} else if (streq(string, "internal")) {
+		return ELF_VISIBILITY_INTERNAL;
+	} else if (streq(string, "protected")) {
+		return ELF_VISIBILITY_PROTECTED;
+	} else {
+		return ELF_VISIBILITY_ERROR;
+	}
+}