X-Git-Url: https://git.xonotic.org/?a=blobdiff_plain;f=ast.h;h=f1ca3c8d7d6c33c48e9de6ce2a11ad10c83a4f5b;hb=2ec0a96a2120f803fc408b747312bd450963ecb7;hp=00802ca3168aca62fbab474dc20111b78a3465b0;hpb=a7fb45f102d281efe1827c700f1dcc5fc4ce3c68;p=xonotic%2Fgmqcc.git

diff --git a/ast.h b/ast.h
index 00802ca..f1ca3c8 100644
--- 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,
@@ -68,11 +70,14 @@ 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) )
 #define ast_ctx(node) (((ast_node_common*)(node))->context)
+#define ast_side_effects(node) (((ast_node_common*)(node))->side_effects)
 
 /* Node interface with common components
  */
@@ -87,6 +92,7 @@ typedef struct
      * prevents its dtor from destroying this node as well.
      */
     bool             keep;
+    bool             side_effects;
 } ast_node_common;
 
 #define ast_delete(x) ( ( (ast_node*)(x) ) -> node.destroy )((ast_node*)(x))
@@ -153,7 +159,8 @@ struct ast_value_s
     ast_value  *next;
     */
 
-    bool isconst;
+    bool constant;
+    bool hasvalue;
     union {
         double        vfloat;
         int           vint;
@@ -227,6 +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,
@@ -309,8 +318,9 @@ struct ast_member_s
     ast_expression_common expression;
     ast_expression *owner;
     unsigned int    field;
+    const char     *name;
 };
-ast_member* ast_member_new(lex_ctx ctx, ast_expression *owner, unsigned int field);
+ast_member* ast_member_new(lex_ctx ctx, ast_expression *owner, unsigned int field, const char *name);
 void ast_member_delete(ast_member*);
 
 bool ast_member_codegen(ast_member*, ast_function*, bool lvalue, ir_value**);
@@ -485,6 +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.
@@ -525,6 +571,8 @@ bool ast_block_set_type(ast_block*, ast_expression *from);
 bool ast_block_codegen(ast_block*, ast_function*, bool lvalue, ir_value**);
 void ast_block_collect(ast_block*, ast_expression*);
 
+void ast_block_add_expr(ast_block*, ast_expression*);
+
 /* Function
  *
  * Contains a list of blocks... at least in theory.