stage1 大量重构

stage1/spl_scope.h

@@ -0,0 +1,42 @@
+#ifndef __SPL_SCOPE_H__
+#define __SPL_SCOPE_H__
+
+#include "spl_lang_type.h"
+
+typedef usize spl_scope_id_t;
+
+typedef enum {
+    SPL_SYMBOL_KIND_ERROR,
+    SPL_SYMBOL_KIND_VAR,
+    SPL_SYMBOL_KIND_MEMBER,
+    SPL_SYMBOL_KIND_FN,
+    SPL_SYMBOL_KIND_TYPE,
+} spl_symbol_kind_t;
+
+typedef struct {
+    const char *name;
+    spl_symbol_kind_t kind;
+    spl_def_id_t node;
+} spl_symbol_t;
+
+typedef VEC(const char *) spl_symbol_path_t;
+
+typedef struct {
+    spl_scope_id_t parent;
+    MAP(const char *, spl_symbol_t) symbols;
+} spl_scope_node_t;
+typedef VEC(spl_scope_node_t) spl_scope_node_vec_t;
+
+typedef struct {
+    spl_scope_node_vec_t scopes;
+    spl_scope_id_t root_scope;
+    spl_scope_id_t current_scope;
+} spl_scope_t;
+
+void spl_scope_init(spl_scope_t *scope);
+void spl_scope_drop(spl_scope_t *scope);
+spl_scope_id_t spl_scope_alloc(spl_scope_t *scope);
+bool spl_scope_insert(spl_scope_t *scope, spl_scope_id_t id, spl_symbol_t symbol);
+bool spl_scope_find(spl_scope_t *scop, const char *symbol_name, spl_symbol_t *out);
+
+#endif /* __SPL_SCOPE_H__ */