Tools

Diana provides the Parser and the Lexer of the graphql for anyone to create their own tools and implementations

The lexer is built based on the Tokenize package code and the Parser on the graphql-js package. Thanks people.

Parser

using Diana

Parse("""
      #
      query {
        Region(name: "The North") {
          NobleHouse(name: "Stark") {
            castle {
              name
            }
            members{
              name
              alias
            }
          }
        }
      }
      """)

result:

 < Node :: Document ,definitions : Diana.Node[
 < Node :: OperationDefinition ,operation : query ,selectionSet :
 < Node :: SelectionSet ,selections : Diana.Node[
 < Node :: Field ,name :
 < Node :: Name ,value : Region >  ,arguments : Diana.Argument[
 < Node :: Argument ,name :
 < Node :: Name ,value : name >  ,value : (":",
 < Node :: StringValue ,value : The North > ) > ] ,selectionSet :
 < Node :: SelectionSet ,selections : Diana.Node[
 < Node :: Field ,name :
 < Node :: Name ,value : NobleHouse >  ,arguments : Diana.Argument[
 < Node :: Argument ,name :
 < Node :: Name ,value : name >  ,value : (":",
 < Node :: StringValue ,value : Stark > ) > ] ,selectionSet :
 < Node :: SelectionSet ,selections : Diana.Node[
 < Node :: Field ,name :
 < Node :: Name ,value : castle >  ,selectionSet :
 < Node :: SelectionSet ,selections : Diana.Node[
 < Node :: Field ,name :
 < Node :: Name ,value : name >  > ] >  > ,
 < Node :: Field ,name :
 < Node :: Name ,value : members >  ,selectionSet :
 < Node :: SelectionSet ,selections : Diana.Node[
 < Node :: Field ,name :
 < Node :: Name ,value : name >  > ,
 < Node :: Field ,name :
 < Node :: Name ,value : alias >  > ] >  > ] >  > ] >  > ] >  > ] >

Lexer

using Diana

Tokensgraphql("""
              #
              query {
                Region(name: "The North") {
                  NobleHouse(name: "Stark") {
                    castle {
                      name
                    }
                    members {
                      name
                      alias
                    }
                  }
                }
              }
              """)

result:

29-element Array{Diana.Tokens.Token,1}:
 NAME           query               2,15 - 2,19
 LBRACE         {                   2,21 - 2,21
 NAME           Region              3,31 - 3,36
 LPAREN         (                   3,37 - 3,37
 NAME           name                3,38 - 3,41
 COLON          :                   3,42 - 3,42
 STRING         The North           3,44 - 3,54
 RPAREN         )                   3,55 - 3,55
 LBRACE         {                   3,57 - 3,57
 NAME           NobleHouse          4,49 - 4,58
 LPAREN         (                   4,59 - 4,59
 NAME           name                4,60 - 4,63
 COLON          :                   4,64 - 4,64
 STRING         Stark               4,66 - 4,72
 RPAREN         )                   4,73 - 4,73
 LBRACE         {                   4,75 - 4,75
 NAME           castle              5,69 - 5,74
 LBRACE         {                   5,76 - 5,76
 NAME           name                6,91 - 6,94
 RBRACE         }                   7,111 - 7,111
 NAME           members             8,131 - 8,137
 LBRACE         {                   8,139 - 8,139
 NAME           name                9,153 - 9,156
 NAME           alias               10,175 - 10,179
 RBRACE         }                   11,195 - 11,195
 RBRACE         }                   12,213 - 12,213
 RBRACE         }                   13,229 - 13,229
 RBRACE         }                   14,243 - 14,243
 ENDMARKER                          15,257 - 15,257