native erlang parser done (#2)

breacking changes

Author: mrChex

.gitignore

@@ -15,3 +15,6 @@ erl_crash.dump
 logs
 _build
 .idea
+
+src/graphql_parser_yecc.erl
+src/graphql_lexer.erl

Makefile

@@ -2,7 +2,3 @@
 {deps, [
   {jsx, "2.8.1"}
 ]}.
-
-{pre_hooks, [
-  {"(linux|darwin|solaris)", compile, "make priv/graphql_parser.so"}
-]}.

c_src/graphqlparser.c

@@ -0,0 +1,58 @@
+% GraphQL Lexer
+%
+% See the spec reference http://facebook.github.io/graphql/#sec-Appendix-Grammar-Summary
+% The relevant version is also copied into this repo
+
+Definitions.
+
+% Ignored tokens
+WhiteSpace          = [\x{0009}\x{000B}\x{000C}\x{0020}\x{00A0}]
+_LineTerminator     = \x{000A}\x{000D}\x{2028}\x{2029}
+LineTerminator      = [{_LineTerminator}]
+Comment             = #[^{_LineTerminator}]*
+Comma               = ,
+Ignored             = {WhiteSpace}|{LineTerminator}|{Comment}|{Comma}
+
+% Lexical tokens
+Punctuator          = [!$():=@\[\]{|}]|\.\.\.
+Name                = [_A-Za-z][_0-9A-Za-z]*
+
+% Int Value
+Digit               = [0-9]
+NonZeroDigit        = [1-9]
+NegativeSign        = -
+IntegerPart         = {NegativeSign}?(0|{NonZeroDigit}{Digit}*)
+IntValue            = {IntegerPart}
+
+% Float Value
+FractionalPart      = \.{Digit}+
+Sign                = [+\-]
+ExponentIndicator   = [eE]
+ExponentPart        = {ExponentIndicator}{Sign}?{Digit}+
+FloatValue          = {IntegerPart}{FractionalPart}|{IntegerPart}{ExponentPart}|{IntegerPart}{FractionalPart}{ExponentPart}
+
+% String Value
+HexDigit            = [0-9A-Fa-f]
+EscapedUnicode      = u{HexDigit}{HexDigit}{HexDigit}{HexDigit}
+EscapedCharacter    = ["\\\/bfnrt]
+StringCharacter     = ([^\"{_LineTerminator}]|\\{EscapedUnicode}|\\{EscapedCharacter})
+StringValue         = "{StringCharacter}*"
+
+% Boolean Value
+BooleanValue        = true|false
+
+% Reserved words
+ReservedWord        = query|mutation|fragment|on|type|implements|interface|union|scalar|enum|input|extend|null
+
+Rules.
+
+{Ignored}           : skip_token.
+{Punctuator}        : {token, {list_to_atom(TokenChars), TokenLine}}.
+{ReservedWord}      : {token, {list_to_atom(TokenChars), TokenLine}}.
+{IntValue}          : {token, {int_value, TokenLine, TokenChars}}.
+{FloatValue}        : {token, {float_value, TokenLine, TokenChars}}.
+{StringValue}       : {token, {string_value, TokenLine, TokenChars}}.
+{BooleanValue}      : {token, {boolean_value, TokenLine, TokenChars}}.
+{Name}              : {token, {name, TokenLine, TokenChars}}.
+
+Erlang code.

c_src/graphqlparser_nif.c

@@ -7,9 +7,14 @@
 ]).
 
 
--spec parse(binary()) -> map().
-parse(RawGraphqlQuery)->
-  case graphql_parser_nif:parse(RawGraphqlQuery) of
-    {ok, Json} -> {ok, jsx:decode(Json, [return_maps])};
-    {error, Error}-> {error, Error}
-  end.
+-spec parse(binary() | list()) -> map().
+parse(Q) when is_binary(Q) ->
+  ListQ = binary_to_list(Q),
+  parse_list(ListQ);
+parse(Q) when is_list(Q)->
+  parse_list(Q).
+
+-spec parse_list(list()) -> map().
+parse_list(Document)->
+  {ok, Tokens, _} = graphql_lexer:string(Document),
+  graphql_parser_yecc:parse(Tokens).