BNF for AQL.jj

<DEFAULT> TOKEN : {
<CARET: "^">
}

   

<DEFAULT> TOKEN : {
<DATASET: "dataset">
}

   

<DEFAULT> TOKEN : {
<LEFTPAREN: "(">
}

   

<DEFAULT> TOKEN : {
<RIGHTPAREN: ")">
}

   

<DEFAULT> TOKEN : {
<INTEGER_LITERAL: (<DIGIT>)+>
}

   

<DEFAULT> TOKEN : {
<NULL: "null">
}

   

<DEFAULT> TOKEN : {
<TRUE: "true">
}

   

<DEFAULT> TOKEN : {
<FALSE: "false">
}

   

<DEFAULT> TOKEN : {
<#DIGIT: ["0"-"9"]>
}

   

<DEFAULT> TOKEN : {
<DOUBLE_LITERAL: <INTEGER> | <INTEGER> ("." <INTEGER>)? | "." <INTEGER>>
| <FLOAT_LITERAL: <INTEGER> ("f" | "F") | <INTEGER> ("." <INTEGER> ("f" | "F"))? | "." <INTEGER> ("f" | "F")>
| <INTEGER: (<DIGIT>)+>
}

   

<DEFAULT> TOKEN : {
<#LETTER: ["A"-"Z","a"-"z"]>
}

   

<DEFAULT> TOKEN : {
<SPECIALCHARS: ["$","_","-"]>
}

   

<DEFAULT> TOKEN : {
<STRING_LITERAL: "\"" (<EscapeQuot> | ~["\""])* "\"" | "\'" (<EscapeApos> | ~["\'"])* "\'">
| <#EscapeQuot: "\\\"">
| <#EscapeApos: "\\\'">
}

   

<DEFAULT> TOKEN : {
<IDENTIFIER: (<LETTER>)+ (<LETTER> | <DIGIT> | <SPECIALCHARS>)*>
}

   

<DEFAULT> TOKEN : {
<VARIABLE: "$" <IDENTIFIER>>
}

   

<DEFAULT> SKIP : {
" "
| "\t"
| "\r"
| "\n"
}

   

<DEFAULT> SKIP : {
<"//" (~["\n"])* "\n">
}

   

<DEFAULT> SKIP : {
<"//" (~["\n","\r"])* ("\n" | "\r" | "\r\n")?>
}

   

<DEFAULT> SKIP : {
"/*" : INSIDE_COMMENT
}

   

<INSIDE_COMMENT> SPECIAL : {
<"+" (" ")* (~["*"])*>
}

   

<INSIDE_COMMENT> SKIP : {
"/*" : {
}

   

<INSIDE_COMMENT> SKIP : {
"*/" : {
| <~[]>
}