From 57a47d11437c168d5ee1c6024ae7a48df8a302ba Mon Sep 17 00:00:00 2001
From: Ferruccio Guidi <ferruccio.guidi@unibo.it>
Date: Tue, 10 Sep 2002 17:48:27 +0000
Subject: [PATCH] a small correction to mathQL.ml

---
 helm/ocaml/mathql/mQueryTLexer.mll  | 82 ++++++++++++++---------------
 helm/ocaml/mathql/mQueryTParser.mly | 58 ++++++--------------
 helm/ocaml/mathql/mathQL.ml         |  2 +-
 3 files changed, 55 insertions(+), 87 deletions(-)

diff --git a/helm/ocaml/mathql/mQueryTLexer.mll b/helm/ocaml/mathql/mQueryTLexer.mll
index 0075f3ac1..ca24965b1 100644
--- a/helm/ocaml/mathql/mQueryTLexer.mll
+++ b/helm/ocaml/mathql/mQueryTLexer.mll
@@ -41,48 +41,44 @@ let SPC   = [' ' '\t' '\n']+
 let ALPHA = ['A'-'Z' 'a'-'z']
 let NUM   = ['0'-'9']
 let IDEN  = ALPHA (NUM | ALPHA)*
-let DQ    = '"'
-let SQ    = '''
-let QSTR  = [^ ''']*
-let USTR  = [^ '"' ':' '/' '#' '?' '*']+
+let QSTR  = [^ '"\']*
 
-rule rtoken = parse
-   | DQ               { DQT   }
-   | ":/"             { PROT  }
-   | "/"              { SLASH }
-   | "#1"             { FRAG  }
-   | "?"              { QUEST }
-   | "**"             { SSTAR }
-   | "*"              { STAR  }
-   | USTR             { STR (Lexing.lexeme lexbuf) }
-and stoken = parse
-   | SQ               { SQT   }
-   | QSTR             { STR (Lexing.lexeme lexbuf) }
-and qtoken = parse
-   | SPC              { qtoken lexbuf }
-   | '('              { LPR    }
-   | ')'              { RPR    }
-   | '$'              { DLR    }
-   | SQ               { STR (qstr stoken lexbuf) }
-   | DQ               { REF (ref rtoken lexbuf) }
-   | "name"           { NAME   }
-   | "mainconclusion" { MCONCL }
-   | "conclusion"     { CONCL  }
-   | "true"           { TRUE   }
-   | "false"          { FALSE  }
-   | "and"            { AND    }
-   | "or"             { OR     }
-   | "not"            { NOT    }
-   | "is"             { IS     }
-   | "select"         { SELECT }
-   | "in"             { IN     }
-   | "where"          { WHERE  }
-   | "use"            { USE    }
-   | "position"       { POS    }
-   | "usedby"         { USEDBY }
-   | "pattern"        { PATT   }
-   | "union"          { UNION  }
-   | "intersect"      { INTER  }
-   | IDEN             { ID (Lexing.lexeme lexbuf) }
-   | eof              { EOF   }
+
+rule string_token = parse
+   | '"'         { DQ  }
+   | '\' .       { STR (Lexing.lexeme lexbuf) }
+   | QSTR        { STR (String.sub 1 1 (Lexing.lexeme lexbuf)) }
+   | eof         { EOF }
+and main_token = parse
+   | SPC         { main_token lexbuf }
+   | '('         { LP }
+   | ')'         { RP }
+   | '@'         { AT }
+   | '%'         { PC }
+   | '$'         { DL }
+   | '.'         { FS }
+   | '"'         { STR (qstr string_token lexbuf }
+   | "and"       { AND    }
+   | "attr"      { ATTR   }
+   | "attribute" { ATTRIB }
+   | "diff"      { DIFF   }
+   | "eq"        { EQ     }
+   | "false"     { FALSE  }
+   | "fun"       { FUN    }
+   | "in"        { IN     }
+   | "intersect" { INTER  }
+   | "not"       { NOT    }
+   | "or"        { OR     }
+   | "pattern"   { PAT    }
+   | "ref"       { REF    }
+   | "refof"     { REFOF  }
+   | "relation"  { REL    }
+   | "select"    { SELECT }
+   | "sub"       { SUB    }
+   | "super"     { SUPER  }
+   | "true"      { TRUE   }
+   | "union"     { UNION  }
+   | "where"     { WHERE  }
+   | IDEN        { ID (Lexing.lexeme lexbuf) }
+   | eof         { EOF    }
 
diff --git a/helm/ocaml/mathql/mQueryTParser.mly b/helm/ocaml/mathql/mQueryTParser.mly
index 9bfcd4e0c..7f1c6e91b 100644
--- a/helm/ocaml/mathql/mQueryTParser.mly
+++ b/helm/ocaml/mathql/mQueryTParser.mly
@@ -34,61 +34,33 @@
 /******************************************************************************/
 
 %{
-   open MathQL
 %}
    %token    <string> ID STR
-   %token    <MathQL.mqtref> REF
-   %token    LPR RPR DLR SQT DQT EOF PROT SLASH FRAG QUEST STAR SSTAR 
-   %token    NAME
-   %token    MCONCL CONCL
-   %token    TRUE FALSE AND OR NOT IS
-   %token    SELECT IN WHERE USE POS USEDBY PATT UNION INTER
+   %token    LC RC CM SC LP RP AT PC DL FS DQ EOF 
+   %token    AND ATTR ATTRIB DIFF EQ FALSE FUN IN INTER NOT OR PAT REF REFOF
+   %token    REL SELECT SUB SUPER TRUE UNION WHERE
+   %left     DIFF
    %left     OR UNION
    %left     AND INTER
    %nonassoc NOT
    %start    qstr ref query
-   %type     <string>        qstr   
-   %type     <MathQL.mqtref> ref   
-   %type     <MathQL.mquery> query   
+   %type     <string>              qstr      
+   %type     <MathQL.resource_set> query   
 %%
-   prot:
-      | STR  { Some $1 }
-      | STAR { None }
-   ;
-   body:
-      |            { []            }
-      | SLASH body { MQBD :: $2    }
-      | QUEST body { MQBQ :: $2    }
-      | SSTAR body { MQBSS :: $2   }
-      | STAR body  { MQBS :: $2    }
-      | STR body   { MQBC $1 :: $2 } 
-   frag:
-      |                  { []          }
-      | SLASH SSTAR frag { MQFSS :: $3 }
-      | SLASH STAR frag  { MQFS :: $3  }
-      | SLASH STR frag   { try let i = int_of_string $2 in
-                               if i < 1 then raise Parsing.Parse_error;
-	     	    	       MQFC i :: $3
-		           with e -> raise Parsing.Parse_error
-                         }
-   ;
-   ref:
-      | prot PROT body DQT           { ($1, $3, []) }
-      | prot PROT body FRAG frag DQT { ($1, $3, $5) }
-   ;   
    qstr:
-      | STR SQT { $1 }
+      | QT       { ""      }
+      | STR qstr { $1 @ $2 }
+   ;
+   svar:
+      | PC ID { $2 }
    ;
    rvar:
-      | ID { $1 }
+      | AT ID { $2 }
    ;
-   svar:
-      | DLR ID { $2 }
+   vvar:
+      | DL ID { $2 }
    ;
-   func:
-      | NAME { MQName }
-   ;   
-   str:
+   val:
       | MCONCL    { MQMConclusion   }
       | CONCL     { MQConclusion    }
       | STR       { MQCons $1       } 
diff --git a/helm/ocaml/mathql/mathQL.ml b/helm/ocaml/mathql/mathQL.ml
index ee10c6acf..e37b03d7c 100644
--- a/helm/ocaml/mathql/mathQL.ml
+++ b/helm/ocaml/mathql/mathQL.ml
@@ -47,7 +47,7 @@ type refine_op = Exact
                | Sub
 	       | Super
 
-type attr_list = string list
+type attr_list = vvar list
 
 type set_exp = SVar of svar
 	     | RVar of rvar
-- 
2.39.2