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(* *********************************************************************)
(* *)
(* The Compcert verified compiler *)
(* *)
(* Xavier Leroy, INRIA Paris-Rocquencourt *)
(* *)
(* Copyright Institut National de Recherche en Informatique et en *)
(* Automatique. All rights reserved. This file is distributed *)
(* under the terms of the GNU General Public License as published by *)
(* the Free Software Foundation, either version 2 of the License, or *)
(* (at your option) any later version. This file is also distributed *)
(* under the terms of the INRIA Non-Commercial License Agreement. *)
(* *)
(* *********************************************************************)
{
open Camlcoq
open CMparser
exception Error of string
}
let blank = [' ' '\009' '\012' '\010' '\013']
let floatlit =
['0'-'9'] ['0'-'9' '_']*
('.' ['0'-'9' '_']* )?
(['e' 'E'] ['+' '-']? ['0'-'9'] ['0'-'9' '_']*)?
let ident = ['A'-'Z' 'a'-'z' '_'] ['A'-'Z' 'a'-'z' '_' '$' '0'-'9']*
let temp = "$" ['0'-'9'] ['0'-'9']*
let intlit = "-"? ( ['0'-'9']+ | "0x" ['0'-'9' 'a'-'f' 'A'-'F']+
| "0o" ['0'-'7']+ | "0b" ['0'-'1']+ )
let stringlit = "\"" [ ^ '"' ] * '"'
rule token = parse
| blank + { token lexbuf }
| "/*" { comment lexbuf; token lexbuf }
| "absf" { ABSF }
| "&" { AMPERSAND }
| "&&" { AMPERSANDAMPERSAND }
| "!" { BANG }
| "!=" { BANGEQUAL }
| "!=f" { BANGEQUALF }
| "!=u" { BANGEQUALU }
| "|" { BAR }
| "||" { BARBAR }
| "^" { CARET }
| "case" { CASE }
| ":" { COLON }
| "," { COMMA }
| "default" { DEFAULT }
| "else" { ELSE }
| "=" { EQUAL }
| "==" { EQUALEQUAL }
| "==f" { EQUALEQUALF }
| "==u" { EQUALEQUALU }
| "exit" { EXIT }
| "extern" { EXTERN }
| "float" { FLOAT }
| "float32" { FLOAT32 }
| "float64" { FLOAT64 }
| "floatofint" { FLOATOFINT }
| "floatofintu" { FLOATOFINTU }
| "goto" { GOTO }
| ">" { GREATER }
| ">f" { GREATERF }
| ">u" { GREATERU }
| ">=" { GREATEREQUAL }
| ">=f" { GREATEREQUALF }
| ">=u" { GREATEREQUALU }
| ">>" { GREATERGREATER }
| ">>u" { GREATERGREATERU }
| "if" { IF }
| "in" { IN }
| "inline" { INLINE }
| "int" { INT }
| "int16" { INT16 }
| "int16s" { INT16S }
| "int16u" { INT16U }
| "int32" { INT32 }
| "int8" { INT8 }
| "int8s" { INT8S }
| "int8u" { INT8U }
| "intoffloat" { INTOFFLOAT }
| "intuoffloat" { INTUOFFLOAT }
| "{" { LBRACE }
| "{{" { LBRACELBRACE }
| "[" { LBRACKET }
| "<" { LESS }
| "<u" { LESSU }
| "<f" { LESSF }
| "<=" { LESSEQUAL }
| "<=u" { LESSEQUALU }
| "<=f" { LESSEQUALF }
| "<<" { LESSLESS }
| "let" { LET }
| "loop" { LOOP }
| "(" { LPAREN }
| "match" { MATCH }
| "-" { MINUS }
| "->" { MINUSGREATER }
| "-f" { MINUSF }
| "%" { PERCENT }
| "%u" { PERCENTU }
| "+" { PLUS }
| "+f" { PLUSF }
| "?" { QUESTION }
| "}" { RBRACE }
| "}}" { RBRACERBRACE }
| "]" { RBRACKET }
| "readonly" { READONLY }
| "return" { RETURN }
| ")" { RPAREN }
| ";" { SEMICOLON }
| "/" { SLASH }
| "/f" { SLASHF }
| "/u" { SLASHU }
| "stack" { STACK }
| "*" { STAR }
| "*f" { STARF }
| "switch" { SWITCH }
| "tailcall" { TAILCALL }
| "~" { TILDE }
| "var" { VAR }
| "void" { VOID }
| "volatile" { VOLATILE }
| "while" { WHILE }
| intlit { INTLIT(Int32.of_string(Lexing.lexeme lexbuf)) }
| floatlit { FLOATLIT(float_of_string(Lexing.lexeme lexbuf)) }
| stringlit { let s = Lexing.lexeme lexbuf in
STRINGLIT(intern_string(String.sub s 1 (String.length s - 2))) }
| ident { IDENT(BinPos.Coq_xO (intern_string(Lexing.lexeme lexbuf))) }
| temp { let s = Lexing.lexeme lexbuf in
let n = Int32.of_string(String.sub s 1 (String.length s -1)) in
IDENT(if n = 0l then BinPos.Coq_xH else BinPos.Coq_xI (positive_of_camlint n)) }
| eof { EOF }
| _ { raise(Error("illegal character `" ^ Char.escaped (Lexing.lexeme_char lexbuf 0) ^ "'")) }
and comment = parse
"*/" { () }
| eof { raise(Error "unterminated comment") }
| _ { comment lexbuf }
|
