modelverse-thomas/interface/HUTN/grammars/modellanguage.g

// a simpler action language for the MvK

grammar{
    start: NEWLINE? modeldecl+;
    modeldecl: name name? (((LBRA name RBRA)? ASSIGN (name | value)) | (LPAR name COMMA name RPAR))? NEWLINE (indent modeldecl)#*;
    name: IDENTIFIER;
    value: DEC_NUMBER | FLOAT_NUMBER | STRVALUE;
    indent: TAB;

    tokens{
        // TOKENS (written in CAPS)
        IDENTIFIER: '[a-zA-Z_][a-zA-Z_0-9]*' @Msg 'Identifier';

        COMMA: ',';

        LPAR: '\(';
        RPAR: '\)';

        LBRA: '\[';
        RBRA: '\]';

        ASSIGN: '=';

        DEC_NUMBER: '[+-]?(0|[1-9]\d*[lL]?)';
        FLOAT_NUMBER: '[+-]?((\d+\.\d*|\.\d+)([eE][-+]?\d+)?|\d+[eE][-+]?\d+)';
        STRVALUE : 'u?r?("(?!"").*?(?<!\\)(\\\\)*?"|\'(?!\'\').*?(?<!\\)(\\\\)*?\')';

        NEWLINE: '\r?\n+'  @Msg 'Newline';
        WS: '[ ]+' @Msg 'Whitespace' @Impl;
        TAB: '\t' @Msg 'Tabspace';
    }
}