stage1 使用切片表达字符串而非C字符串 提供属性系统

stage1/spl_attr.h

@@ -0,0 +1,84 @@
+#ifndef __SPL_ATTR_H__
+#define __SPL_ATTR_H__
+
+#include "../stage0/include/utils.h"
+
+typedef enum {
+    SPL_ATTR_STAGE_SEMA,
+    SPL_ATTR_STAGE_LAYOUT,
+    SPL_ATTR_STAGE_IR,
+    SPL_ATTR_STAGE_OPT,
+    SPL_ATTR_STAGE_BACKEND,
+} spl_attr_stage_t;
+
+typedef enum {
+    SPL_ATTR_TARGET_DECL,
+    SPL_ATTR_TARGET_TYPE,
+    SPL_ATTR_TARGET_EXPR,
+    SPL_ATTR_TARGET_STMT,
+} spl_attr_target_t;
+
+typedef enum {
+    SPL_ATTR_OPTIONAL,
+    SPL_ATTR_REQUIRED,
+} spl_attr_demand_t;
+
+typedef struct {
+    const char *ns;
+    const char *name;
+    spl_attr_stage_t stage;
+    spl_attr_target_t target;
+    spl_attr_demand_t demand;
+    int min_args;
+    int max_args;
+} spl_attr_info_t;
+
+typedef enum {
+    SPL_ATTR_ARG_INT,
+    SPL_ATTR_ARG_STR,
+    SPL_ATTR_ARG_DEF,
+    SPL_ATTR_ARG_TYPE,
+} spl_attr_arg_kind_t;
+
+typedef struct {
+    spl_attr_arg_kind_t kind;
+    union {
+        isize i;
+        const char *s;
+        usize d;
+        usize t;
+    } value;
+} spl_attr_arg_t;
+typedef VEC(spl_attr_arg_t) spl_attr_arg_vec_t;
+
+typedef usize spl_attr_id_t;
+
+typedef struct {
+    spl_attr_info_t *info;
+    spl_attr_arg_vec_t args;
+    uint32_t consumed_mask;
+} spl_attr_node_t;
+typedef VEC(spl_attr_node_t) spl_attr_node_vec_t;
+typedef VEC(spl_attr_id_t) spl_attr_id_vec_t;
+
+typedef VEC(spl_attr_info_t *) spl_attr_registry_t;
+
+typedef struct {
+    spl_attr_node_vec_t table;
+    spl_attr_registry_t registry;
+} spl_attr_t;
+
+void spl_attr_init(spl_attr_t *ctx);
+void spl_attr_drop(spl_attr_t *ctx);
+
+spl_attr_id_t spl_attr_alloc(spl_attr_t *ctx, spl_attr_info_t *info, spl_attr_arg_vec_t args);
+spl_attr_node_t *spl_attr_node(const spl_attr_t *ctx, spl_attr_id_t id);
+
+void spl_attr_registry_add(spl_attr_t *ctx, spl_attr_info_t *info);
+spl_attr_info_t *spl_attr_lookup(spl_attr_t *ctx, const char *ns, const char *name);
+void spl_attr_register_builtins(spl_attr_t *ctx);
+
+void spl_attr_dump(const spl_attr_t *ctx);
+void spl_attr_dump_id(const spl_attr_t *ctx, spl_attr_id_t id);
+
+#endif /* __SPL_ATTR_H__ */