ElseOperation.ceylon
import ceylon.ast.core {
ElseOperation,
DisjoiningExpression,
Node,
ThenElseExpression
}
import com.redhat.ceylon.compiler.typechecker.tree {
JNode=Node,
Tree {
JDefaultOp=DefaultOp
}
}
"Converts a RedHat AST [[DefaultOp|JDefaultOp]] to a `ceylon.ast` [[ElseOperation]]."
shared ElseOperation elseOperationToCeylon(JDefaultOp elseOperation, Anything(JNode,Node) update = noop) {
"Check precedence"
assert (is ThenElseExpression left = expressionToCeylon(elseOperation.leftTerm, update),
is DisjoiningExpression right = expressionToCeylon(elseOperation.rightTerm, update));
value result = ElseOperation(left, right);
update(elseOperation, result);
return result;
}
"Compiles the given [[code]] for an Else Operation
into an [[ElseOperation]] using the Ceylon compiler
(more specifically, the rule for a `thenElseExpression`)."
shared ElseOperation? compileElseOperation(String code, Anything(JNode,Node) update = noop) {
if (is JDefaultOp jThenElseExpression = createParser(code).thenElseExpression()) {
return elseOperationToCeylon(jThenElseExpression, update);
} else {
return null;
}
}