feat: add scope-based memory management with push/pop and variable isolation

Introduce a new scope system that replaces manual stack frame management with structured scope_push/scope_pop calls. The implementation includes a Scope struct with dedicated memory and local symbol arrays, along with helper functions for variable lookup, memory access, and state synchronization. This change touches context.c, main.c, oop.c, parser.c, and async_stdlib.c to integrate scope initialization, cleanup, and frame transitions during function calls and destructor execution.
2025-11-25 01:27:25 +00:00
parent 09e3339855
commit e7fe6d2e56
8 changed files with 466 additions and 94 deletions
@@ -0,0 +1,54 @@
+#ifndef SCOPE_H
+#define SCOPE_H
+
+#include "types.h"
+
+#define SCOPE_MEM_SIZE 10000
+#define SCOPE_VAR_MAX 500
+
+typedef struct Scope {
+    struct Scope *parent;
+    long *memory;
+    int mem_size;
+    Symbol *locals;
+    int loc_capacity;
+    int sp;
+    int bp;
+    int loc_cnt;
+    int depth;
+} Scope;
+
+extern Scope *current_scope;
+extern Scope *root_scope;
+
+Scope* scope_create(Scope *parent);
+void scope_destroy(Scope *scope);
+Scope* scope_push(void);
+Scope* scope_pop(void);
+
+int scope_find_local(const char *name, int len);
+int scope_find_local_current_only(const char *name, int len);
+Symbol* scope_get_local(int idx);
+Symbol* scope_add_local(const char *name, int len, int type, int addr, int is_array);
+
+long scope_mem_read(int addr);
+void scope_mem_write(int addr, long value);
+int scope_mem_alloc(int size);
+int scope_check_sp(int required);
+int scope_check_addr(int addr);
+
+void scope_init(void);
+void scope_cleanup(void);
+
+void scope_save_state(int *out_sp, int *out_bp, int *out_loc_cnt);
+void scope_restore_state(int saved_sp, int saved_bp, int saved_loc_cnt);
+
+void scope_sync_to_globals(void);
+void scope_sync_from_globals(void);
+
+Symbol* scope_find_local_symbol(const char *name, int len);
+int scope_find_local_with_scope(const char *name, int len, Scope **out_scope);
+long scope_read_var(const char *name, int len);
+void scope_write_var(const char *name, int len, long value);
+
+#endif