UnionOperation.ceylon
import ceylon.ast.core {
IntersectingExpression,
Node,
UnioningExpression,
UnionOperation
}
import com.redhat.ceylon.compiler.typechecker.tree {
JNode=Node,
Tree {
JUnionOp=UnionOp
}
}
"Converts a RedHat AST [[UnionOp|JUnionOp]] to a `ceylon.ast` [[UnionOperation]]."
shared UnionOperation unionOperationToCeylon(JUnionOp unionOperation, Anything(JNode,Node) update = noop) {
"Check precedence"
assert (is UnioningExpression left = expressionToCeylon(unionOperation.leftTerm, update),
is IntersectingExpression right = expressionToCeylon(unionOperation.rightTerm, update));
value result = UnionOperation(left, right);
update(unionOperation, result);
return result;
}
"Compiles the given [[code]] for a Union Operation
into an [[UnionOperation]] using the Ceylon compiler
(more specifically, the rule for a `unionExpression`)."
shared UnionOperation? compileUnionOperation(String code, Anything(JNode,Node) update = noop) {
if (is JUnionOp jUnionExpression = createParser(code).unionExpression()) {
return unionOperationToCeylon(jUnionExpression, update);
} else {
return null;
}
}