OptionalType.ceylon
import ceylon.ast.core {
Node,
OptionalType,
PrimaryType
}
import com.redhat.ceylon.compiler.typechecker.tree {
JNode=Node,
Tree {
JOptionalType=OptionalType
}
}
"Converts a RedHat AST [[OptionalType|JOptionalType]] to a `ceylon.ast` [[OptionalType]]."
shared OptionalType optionalTypeToCeylon(JOptionalType optionalType, Anything(JNode,Node) update = noop) {
assert (is PrimaryType definite = typeToCeylon(optionalType.definiteType, update));
value result = OptionalType(definite);
update(optionalType, result);
return result;
}
"Compiles the given [[code]] for an Optional Type
into an [[OptionalType]] using the Ceylon compiler
(more specifically, the rule for an `primaryType`)."
shared OptionalType? compileOptionalType(String code, Anything(JNode,Node) update = noop) {
if (is JOptionalType jOptionalType = createParser(code).primaryType()) {
return optionalTypeToCeylon(jOptionalType, update);
} else {
return null;
}
}