stage1 大量重构

stage1/spl_sema.h

@@ -4,48 +4,23 @@
 #include "spl_ast.h"
 #include "spl_attr.h"
 #include "spl_diag.h"
+#include "spl_lang_type.h"
 #include "spl_mpa.h"
+#include "spl_scope.h"
 #include "spl_type.h"
 
-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 usize spl_scope_id_t; /* 0 is error */
-
-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);
-
-typedef VEC(const char *) spl_symbol_path_t;
+typedef struct spl_module_loader spl_module_loader_t;
+struct spl_module_loader {
+    /* 从 from_fname 所在目录解析 path；返回该文件的 ast（已 init + parse）。
+       失败（文件不存在 / parse 错误 / 环）返回 NULL。
+       loader 拥有 ast 的生命周期；sema 不负责释放。 */
+    spl_ast_t *(*load)(void *user, const char *from_fname, const char *path, spl_diag_t *diag);
+    void *user;
+};
 
 typedef struct {
     spl_ast_t *ast;
-    spl_type_t *type;
+    spl_lang_type_t *type;
     spl_scope_t *scope;
     spl_symbol_t root;
     spl_attr_t *attr;
@@ -53,11 +28,11 @@ typedef struct {
     spl_lang_type_id_t current_fn_ret_tid;
     spl_lang_type_id_t current_loop_break_tid;
     spl_symbol_path_t label_stack;
-
+    const spl_module_loader_t *loader;
     spl_diag_t *diag;
 } spl_sema_t;
 
-void spl_sema_init(spl_sema_t *sema, spl_ast_t *ast, spl_type_t *type, spl_scope_t *scope,
+void spl_sema_init(spl_sema_t *sema, spl_ast_t *ast, spl_lang_type_t *type, spl_scope_t *scope,
                    spl_attr_t *attr);
 void spl_sema_drop(spl_sema_t *sema);