mirror of
https://github.com/paparazzi/paparazzi.git
synced 2026-06-07 09:36:19 +08:00
Pascal Brisset
78 lines
2.3 KiB
OCaml
78 lines
2.3 KiB
OCaml
/*
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* $Id$
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*
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* Grammar à la C
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*
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* Copyright (C) 2003-2010 Antoine Drouin, Pascal Brisset, ENAC
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*
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* This file is part of paparazzi.
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*
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* paparazzi is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* paparazzi is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with paparazzi; see the file COPYING. If not, write to
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* the Free Software Foundation, 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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%{
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open Expr_syntax
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%}
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%token <int> INT
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%token <float> FLOAT
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%token <string> IDENT
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%token EOF
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%token DOT COMMA SEMICOLON LP RP LC RC LB RB AND COLON OR
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%token EQ GT ASSIGN GEQ NOT
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%token PLUS MINUS
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%token MULT DIV MOD
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%left AND OR /* lowest precedence */
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%left EQ GT ASSIGN GEQ
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%left PLUS MINUS
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%left MULT DIV MOD
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%nonassoc NOT
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%nonassoc UMINUS /* highest precedence */
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%start expression /* the entry point */
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%type <Expr_syntax.expression> expression
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%%
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expression:
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expression GT expression { CallOperator (">",[$1;$3]) }
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| expression GEQ expression { CallOperator (">=",[$1;$3]) }
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| expression EQ expression { CallOperator ("==",[$1;$3]) }
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| expression AND expression { CallOperator ("&&",[$1;$3]) }
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| expression OR expression { CallOperator ("||",[$1;$3]) }
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| expression PLUS expression { CallOperator ("+",[$1;$3]) }
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| expression MINUS expression { CallOperator ("-",[$1;$3]) }
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| expression MULT expression { CallOperator ("*",[$1;$3]) }
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| expression DIV expression { CallOperator ("/",[$1;$3]) }
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| expression MOD expression { CallOperator ("%",[$1;$3]) }
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| MINUS expression %prec UMINUS { CallOperator ("-",[$2]) }
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| NOT expression { CallOperator ("!",[$2]) }
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| INT { Int $1 }
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| FLOAT { Float $1 }
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| IDENT { Ident $1 }
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| IDENT DOT IDENT { Field ($1,$3) }
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| IDENT LP Args RP { Call ($1, $3) }
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| LP expression RP { $2 }
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| IDENT LB expression RB { Index ($1, $3) }
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;
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Args: { [] }
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| expression NextArgs { $1::$2 }
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;
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NextArgs: { [] }
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| COMMA expression NextArgs { $2::$3 }
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;
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