blockConst method
Implementation
Parser<List<ConstantDefinitionNode>> blockConst() => seq2(
ref1(token, 'const'),
seq4(ref0(identifier), ref1(token, '='), ref0(constant), ref1(token, ';'))
.map4(
(name, _, value, _) =>
ConstantDefinitionNode(name: name, value: value),
)
.plus(),
).map2((_, constants) => constants);