don't just store a 'bool constant' in the ast/ir, store the complete qualifier: ...

[xonotic/gmqcc.git] / ast.h

diff --git a/ast.h b/ast.h
index 4b889554ea1fa0c09891b7e600ea999739523326..9d419609157039ce944b2fffcc28901422bd160c 100644 (file)
--- a/ast.h
+++ b/ast.h
@@ -48,6 +48,8 @@ typedef struct ast_member_s      ast_member;
 typedef struct ast_array_index_s ast_array_index;
 typedef struct ast_breakcont_s   ast_breakcont;
 typedef struct ast_switch_s      ast_switch;
+typedef struct ast_label_s       ast_label;
+typedef struct ast_goto_s        ast_goto;
 
 enum {
     TYPE_ast_node,
@@ -68,7 +70,9 @@ enum {
     TYPE_ast_member,
     TYPE_ast_array_index,
     TYPE_ast_breakcont,
-    TYPE_ast_switch
+    TYPE_ast_switch,
+    TYPE_ast_label,
+    TYPE_ast_goto
 };
 
 #define ast_istype(x, t) ( ((ast_node_common*)x)->nodetype == (TYPE_##t) )
@@ -155,7 +159,7 @@ struct ast_value_s
     ast_value  *next;
     */
 
-    bool constant;
+    bool cvq; /* const/var qualifier */
     bool hasvalue;
     union {
         double        vfloat;
@@ -230,6 +234,8 @@ struct ast_binstore_s
     int             opbin;
     ast_expression *dest;
     ast_expression *source;
+    /* for &~= which uses the destination in a binary in source we can use this */
+    bool            keep_dest;
 };
 ast_binstore* ast_binstore_new(lex_ctx    ctx,
                                int        storeop,
@@ -489,6 +495,42 @@ void ast_switch_delete(ast_switch*);
 
 bool ast_switch_codegen(ast_switch*, ast_function*, bool lvalue, ir_value**);
 
+/* Label nodes
+ *
+ * Introduce a label which can be used together with 'goto'
+ */
+struct ast_label_s
+{
+    ast_expression_common expression;
+    const char *name;
+    ir_block   *irblock;
+    ast_goto  **gotos;
+};
+
+ast_label* ast_label_new(lex_ctx ctx, const char *name);
+void ast_label_delete(ast_label*);
+void ast_label_register_goto(ast_label*, ast_goto*);
+
+bool ast_label_codegen(ast_label*, ast_function*, bool lvalue, ir_value**);
+
+/* GOTO nodes
+ *
+ * Go to a label, the label node is filled in at a later point!
+ */
+struct ast_goto_s
+{
+    ast_expression_common expression;
+    const char *name;
+    ast_label  *target;
+    ir_block   *irblock_from;
+};
+
+ast_goto* ast_goto_new(lex_ctx ctx, const char *name);
+void ast_goto_delete(ast_goto*);
+void ast_goto_set_label(ast_goto*, ast_label*);
+
+bool ast_goto_codegen(ast_goto*, ast_function*, bool lvalue, ir_value**);
+
 /* CALL node
  *
  * Contains an ast_expression as target, rather than an ast_function/value.