last commit for helena 0.8.2

[helm.git] / helm / software / helena / src / text / txtParser.mly

diff --git a/helm/software/helena/src/text/txtParser.mly b/helm/software/helena/src/text/txtParser.mly
index d9336b189f142a8d4e6a58546fb076941b0f2dbe..d08fb87d9ede95119ffdab5c7ce44a1ee2e608f0 100644 (file)
--- a/helm/software/helena/src/text/txtParser.mly
+++ b/helm/software/helena/src/text/txtParser.mly
@@ -24,22 +24,19 @@
  */
 
 %{
-   module G = Options
-   module N = Layer
-   module T = Txt
+   module G  = Options
+   module N  = Layer
+   module T  = Txt
    
    let _ = Parsing.set_trace !G.debug_parser
 %}
    %token <int> IX
    %token <string> ID STR
-   %token OP CP OB CB OA CA FS CN CM EQ STAR HASH PLUS TE WTO STO CT
+   %token OP CP OB CB OA CA OC CC FS CN CM EQ STAR HASH TE CT
    %token GRAPH MAIN DECL AX CONG DEF TH GEN REQ OPEN CLOSE SORTS EOF
 
    %start entry
    %type <Txt.command option> entry
-
-   %nonassoc CP CB CA
-   %right WTO STO
 %%
    hash:
       |      {}
@@ -70,59 +67,46 @@
       | sort          { [$1]     }
       | sort CM sorts { $1 :: $3 }
    ;
-   level:
-      |       { N.infinite }
-      | CT IX { N.finite $2}
+   layer:
+      |       { N.infinite  }
+      | CT IX { N.finite $2 }
+   ;
+
+   binder:
+      | OB ID CN term CB layer { T.Abst ($6, $2, true, $4)  }
+      | OB term CB layer       { T.Abst ($4, "", false, $2) }
+      | OB ID TE term CB layer { T.Abst ($6, $2, false, $4) }
+      | OB ID EQ term CB       { T.Abbr ($2, $4)            }
+   ;
+   binders:
+      | binder fs binder       { [$1; $3] }
+      | binder fs binders      { $1 :: $3 }
+   ;
+   lenv:
+      | binder        { [$1] }
+      | OC binders CC { $2   }
    ;
 
-   abst:
-      | ID CN term { $1, true, $3  }
-      | TE term    { "", false, $2 }
-      | ID TE term { $1, false, $3 }
-   ;
-   abbr:
-      | ID EQ term { $1, $3 }
-   ;
-   absts:
-      | abst          { [$1]     }
-      | abst CM absts { $1 :: $3 }
-   ;
-   abbrs:
-      | abbr          { [$1]     }
-      | abbr CM abbrs { $1 :: $3 }
-   ;   
-   binder: 
-      | absts { T.Abst $1 }
-      | abbrs { T.Abbr $1 }
-      | ids   { T.Void $1 }
-   ;      
    atom:
-      | STAR IX          { T.Sort $2         }
-      | STAR ID          { T.NSrt $2         }
-      | hash IX          { T.LRef ($2, 0)    }
-      | hash IX PLUS IX  { T.LRef ($2, $4)   }
-      | ID               { T.NRef $1         }
-      | HASH ID          { T.NRef $2         }
-      | atom OP term CP  { T.Inst ($1, [$3]) }
-      | atom OP terms CP { T.Inst ($1, $3)   }
+      | STAR IX          { T.Sort $2       }
+      | STAR ID          { T.NSrt $2       }
+      | hash IX          { T.LRef $2       }
+      | ID               { T.NRef $1       }
+      | HASH ID          { T.NRef $2       }
+      | atom OP terms CP { T.Inst ($1, $3) }
    ;
    term:
-      | atom                       { $1                             }
-      | OA term CA fs term         { T.Cast ($2, $5)                }
-      | OP term CP fs term         { T.Appl ([$2], $5)              }
-      | OP terms CP fs term        { T.Appl ($2, $5)                }
-      | OB binder CB level fs term { T.Bind ($4, $2, $6)            }
-      | term WTO level term        { T.Impl ($3, false, "", $1, $4) }
-      | ID TE term WTO level term  { T.Impl ($5, false, $1, $3, $6) }
-      | term STO level term        { T.Impl ($3, true, "", $1, $4)  }
-      | ID TE term STO level term  { T.Impl ($5, true, $1, $3, $6)  }
-      | OP term CP                 { $2                             }
+      | atom               { $1              }
+      | OA term CA fs term { T.Cast ($2, $5) }
+      | OP term CP fs term { T.Appl ($2, $5) }
+      | lenv fs term       { T.Proj ($1, $3) }
+      | OP term CP         { $2              }
    ;
    terms:
-      | term CM term  { [$1; $3] }
+      | term          { [$1] }
       | term CM terms { $1 :: $3 }
    ;
-   
+
    decl:
       | DECL { T.Decl }
       | AX   { T.Ax   }
@@ -132,33 +116,32 @@
       | DEF  { T.Def } 
       | TH   { T.Th  }
    ;
-   xentity:
+   command:
       | GRAPH ID
-         { T.Graph $2                                     }
-      | main decl level comment ID CN term
-         { T.Entity ($1, $2, $3, $5, $4, $7)              }
-      | main def level comment ID EQ term
-         { T.Entity ($1, $2, $3, $5, $4, $7)              }
-      | main def level comment ID EQ term CN term
-         { T.Entity ($1, $2, $3, $5, $4, T.Cast ($9, $7)) }
-      | GEN term
-         { T.Generate [$2]                                }
+         { T.Graph $2                                   }
+      | main decl comment ID CN term
+         { T.Constant ($1, $2, $4, $3, $6)              }
+      | main def comment ID EQ term
+         { T.Constant ($1, $2, $4, $3, $6)              }
+      | main def comment ID EQ term CN term
+         { T.Constant ($1, $2, $4, $3, T.Cast ($8, $6)) }
       | GEN terms
-         { T.Generate $2                                  }      
+         { T.Generate $2                                }      
       | REQ ids
-         { T.Require $2                                   }
+         { T.Require $2                                 }
       | OPEN ID                           
-         { T.Section (Some $2)                            }
+         { T.Section (Some $2)                          }
       | CLOSE                             
-         { T.Section None                                 }
+         { T.Section None                               }
       | SORTS sorts
-         { T.Sorts $2                                     }
+         { T.Sorts $2                                   }
    ;
+
    start: 
       | GRAPH {} | decl {} | def {} | GEN {} |
       | REQ {} | OPEN {} | CLOSE {} | SORTS {} | EOF {}
    ;
    entry:
-      | xentity start { Some $1 }
+      | command start { Some $1 }
       | EOF           { None    }
    ;