ast_label, and labels later used for goto

[xonotic/gmqcc.git] / ast.h

diff --git a/ast.h b/ast.h
index 4b889554ea1fa0c09891b7e600ea999739523326..62287fe88e05eb6dc39cba1e20ff141221a1c0d3 100644 (file)
--- a/ast.h
+++ b/ast.h
@@ -48,6 +48,7 @@ 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;
 
 enum {
     TYPE_ast_node,
@@ -68,7 +69,8 @@ enum {
     TYPE_ast_member,
     TYPE_ast_array_index,
     TYPE_ast_breakcont,
-    TYPE_ast_switch
+    TYPE_ast_switch,
+    TYPE_ast_label
 };
 
 #define ast_istype(x, t) ( ((ast_node_common*)x)->nodetype == (TYPE_##t) )
@@ -489,6 +491,22 @@ 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_label* ast_label_new(lex_ctx ctx, const char *name);
+void ast_label_delete(ast_label*);
+
+bool ast_label_codegen(ast_label*, ast_function*, bool lvalue, ir_value**);
+
 /* CALL node
  *
  * Contains an ast_expression as target, rather than an ast_function/value.