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/*
Copyright © 2011 MLstate
This file is part of OPA.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
/*(* The parser definition *)*/
%{
open Requestdef
open RequestType
open Printf
%}
/*(* Tokens *)*/
/*(* Literals *)*/
%token <string> WORD
%token <string> SPACE
/*(* The end-of-file marker *)*/
%token EOL
%token EOF
/*(* Special symbols *)*/
%token COLON /*(* ":" *)*/
/*(* Entry points *)*/
%start request
%type <RequestType.parse_request> request
%start response
%type <Requestdef.Value.value Requestdef.RequestHeader.t> response
%%
/*(* Requests *)*/
/*(*+request : {parse_request} <-
/ RequestLineShort{{Complete{request_line=__1; request_header=RequestHeader.empty; request_message_body=""; server_info=None}}}
/ RequestLine headers {{ Complete { request_line=__1; request_header=__2; request_message_body=""; server_info=None} }}
/ RequestLine {{ Incomplete }} *)*/
request:
RequestLineShort
{ Complete { request_line=$1; request_header=RequestHeader.empty; request_message_body=""; server_info=None} }
| RequestLine headers
{ Complete { request_line=$1; request_header=$2; request_message_body=""; server_info=None} }
| RequestLine
{ Incomplete }
;
/*(*+response : {Requestdef.Value.value Requestdef.RequestHeader.t} <-
/ ResponseLine headers {{ __2 }}*)*/
response:
ResponseLine headers { $2 }
;
/*(*RequestLine <- Word Space+ Word Space+ Word EOL
{{ { _method=method_of_string __1; request_uri=__3; http_version=__5 } }}*)*/
RequestLine:
WORD SPACE WORD SPACE WORD EOL
{ { _method=method_of_string $1; request_uri=$3; http_version=$5 } }
;
/*(* We need to accept HTTP/0.9 requests.*)*/
/*(*RequestLineShort <- Word Space+ Word EOL
{{ { _method=method_of_string __1; request_uri=__3; http_version="HTTP/0.9" } }}*)*/
RequestLineShort:
WORD SPACE WORD EOL
{ { _method=method_of_string $1; request_uri=$3; http_version="HTTP/0.9" } }
;
/*(*ResponseLine <- Word Space+ ([0-9]+ $_) (Space+ Word)+ EOL
{{ __1, int_of_string(__3) }} *)*/
ResponseLine:
WORD SPACE WORD Words EOL { ($1,(int_of_string $3)) }
;
Words:
SPACE WORD Words { $2::$3 }
| SPACE WORD { [$2] }
;
/*(*headers<-Header headers {{ let k,v=__1 in try RequestHeader.add (request_header_of_string k) v __2 with (Parsing _) -> __2 }}
/ EOL {{ RequestHeader.empty }}*)*/
headers:
Header headers { let k, v=$1 in try RequestHeader.add (request_header_of_string k) v $2 with (Parsing _) -> $2 }
| EOL { RequestHeader.empty }
;
/*(*Header <- Word [:] Space* field_value EOL {{ __1, __4 }}*)*/
Header:
WORD COLON SPACE field_value EOL { ($1,`string $4) }
;
/*(*field_value <-
(!EOL . {{ __2 }})* {{ `string (string_of_chars __1) }}*)*/
/*(*Really corny...*)*/
field_value:
WORD field_value { $1^$2 }
| COLON field_value { ":"^$2 }
| SPACE field_value { $1^$2 }
| WORD { $1 }
| COLON { ":" }
| SPACE { $1 }
;
%%
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