ComplementOperation.ceylon
import ceylon.ast.core {
IntersectingExpression,
UnioningExpression,
ComplementOperation
}
import com.redhat.ceylon.compiler.typechecker.tree {
Tree {
JComplementOp=ComplementOp
}
}
"Converts a RedHat AST [[ComplementOp|JComplementOp]] to a `ceylon.ast` [[ComplementOperation]]."
shared ComplementOperation complementOperationToCeylon(JComplementOp complementOperation) {
"Check precedence"
assert (is UnioningExpression left = expressionToCeylon(complementOperation.leftTerm),
is IntersectingExpression right = expressionToCeylon(complementOperation.rightTerm));
return ComplementOperation(left, right);
}
"Compiles the given [[code]] for a Complement Operation
into a [[ComplementOperation]] using the Ceylon compiler
(more specifically, the rule for a `unionExpression`)."
shared ComplementOperation? compileComplementOperation(String code) {
if (is JComplementOp jComplementOperation = createParser(code).unionExpression()) {
return complementOperationToCeylon(jComplementOperation);
} else {
return null;
}
}