Libraries.Data.Formats.JavaScriptObjectNotationDefaultListener

This class is an implementation of the JavaScriptObjectNotationListener blueprint class used by the parser to perform actions when certain parse events occur.

Example Code

use Libraries.Data.Formats.JavaScriptObjectNotation
use Libraries.Data.Formats.JavaScriptObjectNotationDefaultListener
use Libraries.Data.Formats.JavaScriptObjectNotationLexer
use Libraries.Data.Formats.JavaScriptObjectNotationParser

class Main
    action Main()
        Parse("")
    end

    action Parse(text value) returns JavaScriptObjectNotation
         JavaScriptObjectNotationDefaultListener listen
         JavaScriptObjectNotationLexer lex
         JavaScriptObjectNotationParser parse
         lex:SetListener(listen)
         parse:SetListener(listen)
         lex:Read(value)
         parse:Parse(lex)
         return listen:GetObject()
    end
end

This action compares two object hash codes and returns an integer. The result is larger if this hash code is larger than the object passed as a parameter, smaller, or equal. In this case, -1 means smaller, 0 means equal, and 1 means larger. This action was changed in Quorum 7 to return an integer, instead of a CompareResult object, because the previous implementation was causing efficiency issues.

Example Code

Object o
        Object t
        integer result = o:Compare(t) //1 (larger), 0 (equal), or -1 (smaller)

This method is called by the JavaScriptObjectNotationParser on an EnterArray event.

Example Code

use Libraries.Data.Formats.JavaScriptObjectNotationListener

    private action EnterArray
        JavaScriptObjectNotationListener listener
        listener:EnterArray()
    end

This method is called by the JavaScriptObjectNotationParser on an EnterObject event.

Example Code

use Libraries.Data.Formats.JavaScriptObjectNotationListener

    private action EnterObject
        JavaScriptObjectNotationListener listener
        listener:EnterObject()
    end

This method is called by the JavaScriptObjectNotationParser on an EnterPair event.

Example Code

use Libraries.Data.Formats.JavaScriptObjectNotationListener

    private action Object
        JavaScriptObjectNotationListener listener
        listener:ExitArray()
    end

This method is called by the JavaScriptObjectNotationParser on an EnterStart event.

Example Code

use Libraries.Data.Formats.JavaScriptObjectNotationListener

    private action EnterStart
        JavaScriptObjectNotationListener listener
        listener:EnterStart()
    end

This method is called by the JavaScriptObjectNotationParser on an EnterValue event.

Example Code

use Libraries.Data.Formats.JavaScriptObjectNotationListener

    private action EnterValue
        JavaScriptObjectNotationListener listener
        listener:EnterValue()
    end

This action determines if two objects are equal based on their hash code values.

Example Code

use Libraries.Language.Object
        use Libraries.Language.Types.Text
        Object o
        Text t
        boolean result = o:Equals(t)

This method is called by the JavaScriptObjectNotationParser on an ExitArray event.

Example Code

use Libraries.Data.Formats.JavaScriptObjectNotationListener

    private action ExitArray
        JavaScriptObjectNotationListener listener
        listener:ExitArray()
    end

This method is called by the JavaScriptObjectNotationParser on an ExitObject event.

Example Code

use Libraries.Data.Formats.JavaScriptObjectNotationListener

    private action ExitObject
        JavaScriptObjectNotationListener listener
        listener:ExitObject()
    end

This method is called by the JavaScriptObjectNotationParser on an ExitPair event.

Example Code

use Libraries.Data.Formats.JavaScriptObjectNotationListener

    private action ExitPair
        JavaScriptObjectNotationListener listener
        listener:ExitPair()
    end

This method is called by the JavaScriptObjectNotationParser on an ExitStart event.

Example Code

use Libraries.Data.Formats.JavaScriptObjectNotationListener

    private action ExitStart
        JavaScriptObjectNotationListener listener
        listener:ExitStart()
    end

This method is called by the JavaScriptObjectNotationParser on an ExitValue event.

Example Code

use Libraries.Data.Formats.JavaScriptObjectNotationListener

    private action ExitValue
        JavaScriptObjectNotationListener listener
        listener:ExitValue()
    end

This action gets the hash code for an object.

Example Code

Object o
        integer hash = o:GetHashCode()

This method returns the JavaScriptObjectNotation object created from the parse string.

Example Code

use Libraries.Data.Formats.JavaScriptObjectNotation
    use Libraries.Data.Formats.JavaScriptObjectNotationDefaultListener
    use Libraries.Data.Formats.JavaScriptObjectNotationLexer
    use Libraries.Data.Formats.JavaScriptObjectNotationParser

    class Main
        action Main()
            Parse("")
        end

        action Parse(text value) returns JavaScriptObjectNotation
             JavaScriptObjectNotationDefaultListener listen
             JavaScriptObjectNotationLexer lex
             JavaScriptObjectNotationParser parse
             lex:SetListener(listen)
             parse:SetListener(listen)
             lex:Read(value)
             parse:Parse(lex)
             return listen:GetObject()
        end
    end

This method is called by the JavaScriptObjectNotationParser to visit a text object.

Example Code

use Libraries.Data.Formats.JavaScriptObjectNotationListener
    use Libraries.Data.Formats.JavaScriptObjectNotationTerminal
    use Libraries.Data.Formats.JavaScriptObjectNotationToken
    use Libraries.Data.Formats.JavaScriptObjectNotationLexer

    private action ThrowError(JavaScriptObjectNotationToken start, text message, JavaScriptObjectNotationListener listener)
        JavaScriptObjectNotationError error
        error:SetLineNumber(start:startLine)
        error:SetColumnNumber(start:startColumn)
        error:SetIndex(start:startIndex)
        error:SetErrorMessage(message)
        listener:VisitError(error)
    end

This method is called by the JavaScriptObjectNotationParser to visit a text object.

Example Code

use Libraries.Data.Formats.JavaScriptObjectNotationListener
    use Libraries.Data.Formats.JavaScriptObjectNotationTerminal
    use Libraries.Data.Formats.JavaScriptObjectNotationToken
    use Libraries.Data.Formats.JavaScriptObjectNotationLexer

    private action ParseValue
        JavaScriptObjectNotationListener listener
        JavaScriptObjectNotationLexer lexer
        JavaScriptObjectNotationToken token = lexer:GetToken(1)
        JavaScriptObjectNotationTerminal terminal
        terminal:SetToken(lexer:GetToken(currentToken))
        if token:tokenID = lexer:FALSE
            listener:VisitFalse(terminal)
        end
    end

This method is called by the JavaScriptObjectNotationParser to visit a text object.

Example Code

use Libraries.Data.Formats.JavaScriptObjectNotationListener
    use Libraries.Data.Formats.JavaScriptObjectNotationTerminal
    use Libraries.Data.Formats.JavaScriptObjectNotationToken
    use Libraries.Data.Formats.JavaScriptObjectNotationLexer

    private action ParseValue
        JavaScriptObjectNotationListener listener
        JavaScriptObjectNotationLexer lexer
        JavaScriptObjectNotationToken token = lexer:GetToken(1)
        JavaScriptObjectNotationTerminal terminal
        terminal:SetToken(lexer:GetToken(currentToken))
        if token:tokenID = lexer:INTEGER
            listener:VisitInteger(terminal)
        end
    end

This method is called by the JavaScriptObjectNotationParser to visit a text object.

Example Code

use Libraries.Data.Formats.JavaScriptObjectNotationListener
    use Libraries.Data.Formats.JavaScriptObjectNotationTerminal
    use Libraries.Data.Formats.JavaScriptObjectNotationToken
    use Libraries.Data.Formats.JavaScriptObjectNotationLexer

    private action ParseValue
        JavaScriptObjectNotationListener listener
        JavaScriptObjectNotationLexer lexer
        JavaScriptObjectNotationToken token = lexer:GetToken(1)
        JavaScriptObjectNotationTerminal terminal
        terminal:SetToken(lexer:GetToken(currentToken))
        if token:tokenID = lexer:NUMBER
            listener:VisitNumber(terminal)
        end
    end

This method is called by the JavaScriptObjectNotationParser to visit a text object.

Example Code

use Libraries.Data.Formats.JavaScriptObjectNotationListener
    use Libraries.Data.Formats.JavaScriptObjectNotationTerminal
    use Libraries.Data.Formats.JavaScriptObjectNotationToken
    use Libraries.Data.Formats.JavaScriptObjectNotationLexer

    private action ParseValue
        JavaScriptObjectNotationListener listener
        JavaScriptObjectNotationLexer lexer
        JavaScriptObjectNotationToken token = lexer:GetToken(1)
        JavaScriptObjectNotationTerminal terminal
        terminal:SetToken(lexer:GetToken(currentToken))
        if token:tokenID = lexer:TEXT
            listener:VisitText(terminal)
        end
    end

This method is called by the JavaScriptObjectNotationParser to visit a text object.

Example Code

use Libraries.Data.Formats.JavaScriptObjectNotationListener
    use Libraries.Data.Formats.JavaScriptObjectNotationTerminal
    use Libraries.Data.Formats.JavaScriptObjectNotationToken
    use Libraries.Data.Formats.JavaScriptObjectNotationLexer

    private action ParseValue
        JavaScriptObjectNotationListener listener
        JavaScriptObjectNotationLexer lexer
        JavaScriptObjectNotationToken token = lexer:GetToken(1)
        JavaScriptObjectNotationTerminal terminal
        terminal:SetToken(lexer:GetToken(currentToken))
        if token:tokenID = lexer:TRUE
            listener:VisitTrue(terminal)
        end
    end

This method is called by the JavaScriptObjectNotationParser to visit a text object.

Example Code

use Libraries.Data.Formats.JavaScriptObjectNotationListener
    use Libraries.Data.Formats.JavaScriptObjectNotationTerminal
    use Libraries.Data.Formats.JavaScriptObjectNotationToken
    use Libraries.Data.Formats.JavaScriptObjectNotationLexer

    private action ParseValue
        JavaScriptObjectNotationListener listener
        JavaScriptObjectNotationLexer lexer
        JavaScriptObjectNotationToken token = lexer:GetToken(1)
        JavaScriptObjectNotationTerminal terminal
        terminal:SetToken(lexer:GetToken(currentToken))
        if token:tokenID = lexer:NULL
            listener:VisitUndefined(terminal)
        end
    end