1 files changed, 93 insertions, 0 deletions
diff --git a/ast.h b/ast.h
new file mode 100644
index 0000000..6679a6b
--- /dev/null
+++ b/ast.h
@@ -0,0 +1,93 @@
+#ifndef AST_H
+#define AST_H
+#include <stdarg.h>
+#include "const.h"
+#include "semantics.h"
+#include "cibic.tab.h"
+
+typedef struct CNode {
+    enum {
+        /* Top Level */
+        PROG,
+        FUNC_DEF,
+        DECL, /* declaration */
+        DECLR, /* declarator */
+        DECLRS,
+        INIT_DECLR,
+        INIT_DECLRS,
+        INITR, /* initializer */
+        TYPE_SPEC,
+        FIELD, /* struct-or-union field */
+        FIELDS,
+        PLAIN_DECL,
+        DECLS,
+        FUNCS,
+        TYPEDEF,
+
+        /* Statments */
+        STMT,
+
+        /* Expressions  */
+        EXP,
+        ID, /* identifier */
+        INT, /* INT_CONST */
+        CHAR,
+        STR,
+        NOP,
+
+        COMP_STMTS,
+        COMP_DECLS,
+        ARGS,
+        PARAMS
+    } type;
+    union {
+        int intval;
+        int subtype;
+        char *strval;
+    } rec;
+    struct {
+        CType_t type;
+        CVar_t var;
+        CVList_t autos;
+        long const_val;
+        int is_const;
+        int offset; /* offset from var */
+    } ext;
+    struct CNode *chd, *next;
+    /* For error reporting */
+    struct {
+        int row, col;
+    } loc;
+} CNode;
+
+CNode *cnode_add_loc(CNode *node, YYLTYPE loc);
+CNode *cnode_create_ast(CNode *wrapped);
+CNode *cnode_create_nop(void);
+CNode *cnode_create_general(int type, int subtype, int pnum, va_list ap);
+CNode *cnode_list_append(CNode *list, CNode *tail);
+CNode *cnode_list_wrap(int type, CNode *list);
+
+CNode *cnode_create_exp(int exp_type, int pnum, ...);
+CNode *cnode_create_type_spec(int spec_type, int pnum, ...);
+CNode *cnode_create_declr(int declr_type, int pnum, ...);
+CNode *cnode_create_stmt(int stmt_type, int pnum, ...);
+CNode *cnode_create_initr(int initr_type, CNode *body);
+
+CNode *cnode_create_decl(CNode *type, CNode *init_declrs);
+CNode *cnode_create_func(CNode *type, CNode *declr, CNode *stmt);
+CNode *cnode_create_init_declr(CNode *declr, CNode *initr);
+CNode *cnode_create_struct_field(CNode *type_spec, CNode *declrs);
+CNode *cnode_create_plain_decl(CNode *type_spec, CNode *declr);
+CNode *cnode_create_typedef(CNode *type, CNode *declrs);
+
+CNode *cnode_create_identifier(char *val);
+CNode *cnode_create_int_const(int val);
+CNode *cnode_create_char_const(char *val);
+CNode *cnode_create_str_const(char *val);
+
+void cnode_debug_print(CNode *ast, int fancy);
+
+extern CNode *ast_root;
+extern CNode *null;
+
+#endif