From 3be018e1f9c43591e0a1d237ca4fb2189cd84afc Mon Sep 17 00:00:00 2001
From: Bill Currie <bill@taniwha.org>
Date: Tue, 12 Jun 2001 19:44:26 +0000
Subject: [PATCH] beginnings of a bison grammar for qc

---
 tools/qfcc/source/qc-parse.y | 108 +++++++++++++++++++++++++++++++++++
 1 file changed, 108 insertions(+)
 create mode 100644 tools/qfcc/source/qc-parse.y

diff --git a/tools/qfcc/source/qc-parse.y b/tools/qfcc/source/qc-parse.y
new file mode 100644
index 000000000..9e311517d
--- /dev/null
+++ b/tools/qfcc/source/qc-parse.y
@@ -0,0 +1,108 @@
+%{
+%}
+
+%left	OP_OR OP_AND
+%right	'='
+%left	OP_EQ OP_NE OP_LE OP_GE OP_LT OP_GT
+%left	'+' '-'
+%left	'*' '/' '&' '|'
+%left	'!' '.' '('
+
+%token	NAME IMMEDIATE
+
+%token	LOCAL TYPE RETURN WHILE DO IF ELSE FOR
+
+%expect 1
+
+%%
+
+defs
+	: /* empty */
+	| defs def ';'
+	;
+
+def
+	: TYPE def_list
+	| '.' TYPE def_list
+	;
+
+def_list
+	: def_item ',' def_list
+	| def_item
+	;
+
+def_item
+	: NAME opt_initializer
+	| '(' param_list ')' NAME opt_initializer
+	;
+
+param_list
+	: /* emtpy */
+	| param_list ',' param
+	;
+
+param
+	: TYPE NAME
+	;
+
+opt_initializer
+	: /*empty*/
+	| '=' '#' IMMEDIATE
+	| '=' statement_block
+	| '=' IMMEDIATE
+	| '=' '[' expr ',' expr ']' statement_block
+	;
+
+statement_block
+	: '{' statements '}'
+	;
+
+statements
+	: /*empty*/
+	| statements statement ';'
+	;
+
+statement
+	: ';'
+	| statement_block
+	| RETURN expr
+	| RETURN
+	| WHILE '(' expr ')' statement
+	| DO statement WHILE '(' expr ')'
+	| LOCAL def_list
+	| IF '(' expr ')' statement
+	| IF '(' expr ')' statement ELSE statement
+	| FOR '(' expr ';' expr ';' expr ')' statement
+	| expr
+	;
+
+expr
+	: expr OP_AND expr
+	| expr OP_OR expr
+	| expr '=' expr
+	| expr OP_EQ expr
+	| expr OP_NE expr
+	| expr OP_LE expr
+	| expr OP_GE expr
+	| expr OP_LT expr
+	| expr OP_GT expr
+	| expr '+' expr
+	| expr '-' expr
+	| expr '*' expr
+	| expr '/' expr
+	| expr '&' expr
+	| expr '|' expr
+	| expr '.' expr
+	| expr '(' arg_list ')'
+	| '!' expr
+	| NAME
+	| IMMEDIATE
+	| '(' expr ')'
+	;
+
+arg_list
+	: /*empty*/
+	| arg_list ',' expr
+	;
+
+%%