primary method
Implementation
Parser<ValueNode> primary() => [
ref0(literal),
ref0(variable),
ref0(block),
ref0(parens),
ref0(array),
].toChoiceParser();
Parser<ValueNode> primary() => [
ref0(literal),
ref0(variable),
ref0(block),
ref0(parens),
ref0(array),
].toChoiceParser();