X-Git-Url: https://git.xonotic.org/?p=xonotic%2Fgmqcc.git;a=blobdiff_plain;f=ast.h;h=bc37eea72888fb3800028997f1f9b4559567224c;hp=62287fe88e05eb6dc39cba1e20ff141221a1c0d3;hb=56568d24ffbc4041f6c0612285a9ad1346394046;hpb=474d8bd6f042d21f01f3e28b9f53cb0e0181291f

diff --git a/ast.h b/ast.h
index 62287fe..bc37eea 100644
--- a/ast.h
+++ b/ast.h
@@ -49,28 +49,30 @@ 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,
-    TYPE_ast_expression,
-    TYPE_ast_value,
-    TYPE_ast_function,
-    TYPE_ast_block,
-    TYPE_ast_binary,
-    TYPE_ast_store,
-    TYPE_ast_binstore,
-    TYPE_ast_entfield,
-    TYPE_ast_ifthen,
-    TYPE_ast_ternary,
-    TYPE_ast_loop,
-    TYPE_ast_call,
-    TYPE_ast_unary,
-    TYPE_ast_return,
-    TYPE_ast_member,
-    TYPE_ast_array_index,
-    TYPE_ast_breakcont,
-    TYPE_ast_switch,
-    TYPE_ast_label
+    TYPE_ast_node,        /*  0 */
+    TYPE_ast_expression,  /*  1 */
+    TYPE_ast_value,       /*  2 */
+    TYPE_ast_function,    /*  3 */
+    TYPE_ast_block,       /*  4 */
+    TYPE_ast_binary,      /*  5 */
+    TYPE_ast_store,       /*  6 */
+    TYPE_ast_binstore,    /*  7 */
+    TYPE_ast_entfield,    /*  8 */
+    TYPE_ast_ifthen,      /*  9 */
+    TYPE_ast_ternary,     /* 10 */
+    TYPE_ast_loop,        /* 11 */
+    TYPE_ast_call,        /* 12 */
+    TYPE_ast_unary,       /* 13 */
+    TYPE_ast_return,      /* 14 */
+    TYPE_ast_member,      /* 15 */
+    TYPE_ast_array_index, /* 16 */
+    TYPE_ast_breakcont,   /* 17 */
+    TYPE_ast_switch,      /* 18 */
+    TYPE_ast_label,       /* 19 */
+    TYPE_ast_goto         /* 20 */
 };
 
 #define ast_istype(x, t) ( ((ast_node_common*)x)->nodetype == (TYPE_##t) )
@@ -129,7 +131,7 @@ typedef struct
     /* arrays get a member-count */
     size_t                  count;
     ast_value*             *params;
-    bool                    variadic;
+    uint32_t                flags;
     /* The codegen functions should store their output values
      * so we can call it multiple times without re-evaluating.
      * Store lvalue and rvalue seperately though. So that
@@ -138,6 +140,8 @@ typedef struct
     ir_value               *outl;
     ir_value               *outr;
 } ast_expression_common;
+#define AST_FLAG_VARIADIC     (1<<0)
+#define AST_FLAG_NORETURN     (1<<1)
 
 /* Value
  *
@@ -157,7 +161,8 @@ struct ast_value_s
     ast_value  *next;
     */
 
-    bool constant;
+    int  cvq;     /* const/var qualifier */
+    bool isfield; /* this declares a field */
     bool hasvalue;
     union {
         double        vfloat;
@@ -166,6 +171,7 @@ struct ast_value_s
         const char   *vstring;
         int           ventity;
         ast_function *vfunc;
+        ast_value    *vfield;
     } constval;
 
     /* usecount for the parser */
@@ -232,6 +238,8 @@ 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,
@@ -318,6 +326,7 @@ struct ast_member_s
 };
 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_set_name(ast_member*, const char *name);
 
 bool ast_member_codegen(ast_member*, ast_function*, bool lvalue, ir_value**);
 
@@ -441,11 +450,19 @@ struct ast_loop_s
     ast_expression *postcond;
     ast_expression *increment;
     ast_expression *body;
+    /* For now we allow a seperate flag on whether or not the condition
+     * is supposed to be true or false.
+     * That way, the parser can generate a 'while not(!x)' for `while(x)`
+     * if desired, which is useful for the new -f{true,false}-empty-strings
+     * flag.
+     */
+    bool pre_not;
+    bool post_not;
 };
 ast_loop* ast_loop_new(lex_ctx ctx,
                        ast_expression *initexpr,
-                       ast_expression *precond,
-                       ast_expression *postcond,
+                       ast_expression *precond, bool pre_not,
+                       ast_expression *postcond, bool post_not,
                        ast_expression *increment,
                        ast_expression *body);
 void ast_loop_delete(ast_loop*);
@@ -500,13 +517,33 @@ 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.
@@ -547,7 +584,7 @@ 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*);
+bool GMQCC_WARN ast_block_add_expr(ast_block*, ast_expression*);
 
 /* Function
  *
@@ -600,6 +637,7 @@ void ast_function_delete(ast_function*);
 const char* ast_function_label(ast_function*, const char *prefix);
 
 bool ast_function_codegen(ast_function *self, ir_builder *builder);
+bool ast_generate_accessors(ast_value *asvalue, ir_builder *ir);
 
 /* Expression union
  */