ast_return

[xonotic/gmqcc.git] / ast.h

diff --git a/ast.h b/ast.h
index f355716f70d04aeb39fa33f656b1d42217d2f3b6..86bb18379f277ca1710e8856f1655ef510d40cc3 100644 (file)
--- a/ast.h
+++ b/ast.h
@@ -41,6 +41,8 @@ typedef struct ast_ifthen_s     ast_ifthen;
 typedef struct ast_ternary_s    ast_ternary;
 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;
 
 /* Node interface with common components
  */
@@ -116,6 +118,8 @@ struct ast_value_s
      */
     MEM_VECTOR_MAKE(ast_value*, params);
 };
+MEM_VECTOR_PROTO(ast_value, ast_value*, params);
+
 ast_value* ast_value_new(lex_ctx ctx, const char *name, int qctype);
 /* This will NOT delete an underlying ast_function */
 void ast_value_delete(ast_value*);
@@ -123,7 +127,7 @@ void ast_value_delete(ast_value*);
 bool ast_value_set_name(ast_value*, const char *name);
 
 bool ast_value_codegen(ast_value*, ast_function*, bool lvalue, ir_value**);
-bool ast_local_codegen(ast_value *self, ir_function *func);
+bool ast_local_codegen(ast_value *self, ir_function *func, bool isparam);
 bool ast_global_codegen(ast_value *self, ir_builder *ir);
 
 /* Binary
@@ -146,6 +150,42 @@ void ast_binary_delete(ast_binary*);
 
 bool ast_binary_codegen(ast_binary*, ast_function*, bool lvalue, ir_value**);
 
+/* Unary
+ *
+ * Regular unary expressions: not,neg
+ */
+struct ast_unary_s
+{
+    ast_expression_common expression;
+
+    int             op;
+    ast_expression *operand;
+};
+ast_unary* ast_unary_new(lex_ctx    ctx,
+                         int        op,
+                         ast_expression *expr);
+void ast_unary_delete(ast_unary*);
+
+bool ast_unary_codegen(ast_unary*, ast_function*, bool lvalue, ir_value**);
+
+/* Return
+ *
+ * Make sure 'return' only happens at the end of a block, otherwise the IR
+ * will refuse to create further instructions.
+ * This should be honored by the parser.
+ */
+struct ast_return_s
+{
+    ast_expression_common expression;
+    ast_expression *operand;
+};
+ast_return* ast_return_new(lex_ctx    ctx,
+                           int        op,
+                           ast_expression *expr);
+void ast_return_delete(ast_return*);
+
+bool ast_return_codegen(ast_return*, ast_function*, bool lvalue, ir_value**);
+
 /* Entity-field
  *
  * This must do 2 things:
@@ -343,6 +383,8 @@ struct ast_function_s
     ast_value  *vtype;
     const char *name;
 
+    int builtin;
+
     ir_function *ir_func;
     ir_block    *curblock;
     ir_block    *breakblock;
@@ -356,6 +398,13 @@ struct ast_function_s
     char         labelbuf[64];
 
     MEM_VECTOR_MAKE(ast_block*, blocks);
+
+    /* contrary to the params in ast_value, these are the parameter variables
+     * which are to be used in expressions.
+     * The ast_value for the function contains only the parameter types used
+     * to generate ast_calls, and ast_call contains the parameter values
+     * used in that call.
+     */
 };
 ast_function* ast_function_new(lex_ctx ctx, const char *name, ast_value *vtype);
 /* This will NOT delete the underlying ast_value */