corda/sdk/edger8r/linux/Lexer.mll
Angie Chinchilla 9441de4c38 Initial release of Intel SGX for Linux.
This release is used in conjunction with the linux-sgx-driver Intial release:
https://github.com/01org/linux-sgx-driver
commit-id: 0e865ce5e6b297a787bcdc12d98bada8174be6d7

Intel-id: 33399

Signed-off-by: Angie Chinchilla <angie.v.chinchilla@intel.com>
2016-06-23 18:51:53 -04:00

125 lines
4.1 KiB
OCaml

(*
* Copyright (C) 2011-2016 Intel Corporation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*)
{
open Parser
let string_to_int32 s = int_of_string s
}
(* These are some regular expression definitions *)
let open_comment = "/*"
let close_comment = "*/"
let line_comment = "//"
let space = [' ' '\t']
let newline = ('\n' | '\r' '\n')
let digit = ['0' - '9']
let ident = ['_' 'a' - 'z' 'A' - 'Z']
let identifier = ident(ident|digit)*
let number = digit+
let string = '"' [^'"']* '"' (* No embedded '\"' *)
rule tokenize = parse
(* space and newline *)
| space { tokenize lexbuf }
| newline { Lexing.new_line lexbuf; tokenize lexbuf }
(* data types *)
| "char" { Tchar }
| "short" { Tshort }
| "unsigned" { Tunsigned }
| "int" { Tint }
| "float" { Tfloat }
| "double" { Tdouble }
| "int8_t" { Tint8 }
| "int16_t" { Tint16 }
| "int32_t" { Tint32 }
| "int64_t" { Tint64 }
| "uint8_t" { Tuint8 }
| "uint16_t" { Tuint16 }
| "uint32_t" { Tuint32 }
| "uint64_t" { Tuint64 }
| "size_t" { Tsizet }
| "wchar_t" { Twchar }
| "long" { Tlong }
| "void" { Tvoid }
| "struct" { Tstruct }
| "union" { Tunion }
| "enum" { Tenum }
(* specifier *)
| "enclave" { Tenclave }
| "trusted" { Ttrusted }
| "untrusted" { Tuntrusted }
| "from" { Tfrom }
| "import" { Timport }
| "allow" { Tallow }
| "public" { Tpublic }
| "include" { Tinclude }
| "propagate_errno" { Tpropagate_errno }
(* Type qualifier *)
| "const" { Tconst }
(* symbols *)
| '{' { TLBrace }
| '}' { TRBrace }
| '(' { TLParen }
| ')' { TRParen }
| '[' { TLBrack }
| ']' { TRBrack }
| '*' { TPtr }
| '.' { TDot }
| ',' { TComma }
| ';' { TSemicolon }
| '=' { TEqual }
| identifier { Tidentifier(Lexing.lexeme lexbuf) }
| number { Tnumber(string_to_int32(Lexing.lexeme lexbuf)) }
| string { let s = Lexing.lexeme lexbuf in Tstring(String.sub s 1 (String.length s - 2)) }
(* comments *)
| line_comment { eat_until_nl lexbuf }
| open_comment { comment lexbuf }
| eof { EOF }
| _ { failwith ("Invalid token: " ^ Lexing.lexeme(lexbuf)) }
and eat_until_nl = parse
| newline { Lexing.new_line lexbuf; tokenize lexbuf }
| _ { eat_until_nl lexbuf }
and comment = parse (* comments can't be nested *)
close_comment { tokenize lexbuf }
| newline { Lexing.new_line lexbuf; comment lexbuf }
| _ { comment lexbuf }