IsOperation.ceylon
import ceylon.ast.core {
IsOperation,
ExistsNonemptyExpression,
Node
}
import com.redhat.ceylon.compiler.typechecker.tree {
JNode=Node,
Tree {
JIsOp=IsOp,
JStaticType=StaticType
}
}
"Converts a RedHat AST [[IsOp|JIsOp]] to a `ceylon.ast` [[IsOperation]]."
shared IsOperation isOperationToCeylon(JIsOp isOperation, Anything(JNode,Node) update = noop) {
"Check precedence"
assert (is ExistsNonemptyExpression operand = expressionToCeylon(isOperation.term, update));
"Must be a real type"
assert (is JStaticType type = isOperation.type);
value result = IsOperation(operand, typeToCeylon(type, update));
update(isOperation, result);
return result;
}
"Compiles the given [[code]] for an Is Operation
into an [[IsOperation]] using the Ceylon compiler
(more specifically, the rule for a `comparisonExpression`)."
shared IsOperation? compileIsOperation(String code, Anything(JNode,Node) update = noop) {
if (is JIsOp jComparisonExpression = createParser(code).comparisonExpression()) {
return isOperationToCeylon(jComparisonExpression, update);
} else {
return null;
}
}