creating vector's _xyz globals now, accessing them

[xonotic/gmqcc.git] / ast.h

diff --git a/ast.h b/ast.h
index 3dc30b2221c4c278906eb3a076ff7bbb934a1d13..a5eee195eff07d168b9f774e3e0a29831ebae73e 100644 (file)
--- a/ast.h
+++ b/ast.h
@@ -43,6 +43,27 @@ typedef struct ast_loop_s       ast_loop;
 typedef struct ast_call_s       ast_call;
 typedef struct ast_unary_s      ast_unary;
 typedef struct ast_return_s     ast_return;
+typedef struct ast_member_s     ast_member;
+
+enum {
+    TYPE_ast_node,
+    TYPE_ast_expression,
+    TYPE_ast_value,
+    TYPE_ast_function,
+    TYPE_ast_block,
+    TYPE_ast_binary,
+    TYPE_ast_store,
+    TYPE_ast_entfield,
+    TYPE_ast_ifthen,
+    TYPE_ast_ternary,
+    TYPE_ast_loop,
+    TYPE_ast_call,
+    TYPE_ast_unary,
+    TYPE_ast_return,
+    TYPE_ast_member
+};
+
+#define ast_istype(x, t) ( ((ast_node_common*)x)->nodetype == (TYPE_##t) )
 
 /* Node interface with common components
  */
@@ -52,6 +73,7 @@ typedef struct
     lex_ctx          context;
     /* I don't feel comfortable using keywords like 'delete' as names... */
     ast_node_delete *destroy;
+    int              nodetype;
     /* keep: if a node contains this node, 'keep'
      * prevents its dtor from destroying this node as well.
      */
@@ -211,6 +233,22 @@ void ast_entfield_delete(ast_entfield*);
 
 bool ast_entfield_codegen(ast_entfield*, ast_function*, bool lvalue, ir_value**);
 
+/* Member access:
+ *
+ * For now used for vectors. If we get structs or unions
+ * we can have them handled here as well.
+ */
+struct ast_member_s
+{
+    ast_expression_common expression;
+    ast_expression *owner;
+    unsigned int    field;
+};
+ast_member* ast_member_new(lex_ctx ctx, ast_expression *owner, unsigned int field);
+void ast_member_delete(ast_member*);
+
+bool ast_member_codegen(ast_member*, ast_function*, bool lvalue, ir_value**);
+
 /* Store
  *
  * Stores left<-right and returns left.
@@ -220,11 +258,11 @@ struct ast_store_s
 {
     ast_expression_common expression;
     int             op;
-    ast_value      *dest; /* When we add pointers this might have to change to expression */
+    ast_expression *dest;
     ast_expression *source;
 };
 ast_store* ast_store_new(lex_ctx ctx, int op,
-                         ast_value *d, ast_expression *s);
+                         ast_expression *d, ast_expression *s);
 void ast_store_delete(ast_store*);
 
 bool ast_store_codegen(ast_store*, ast_function*, bool lvalue, ir_value**);