IsOperation.ceylon
import ceylon.ast.core {
IsOperation,
ExistsNonemptyExpression
}
import com.redhat.ceylon.compiler.typechecker.tree {
Tree {
JIsOp=IsOp,
JStaticType=StaticType
}
}
"Converts a RedHat AST [[IsOp|JIsOp]] to a `ceylon.ast` [[IsOperation]]."
shared IsOperation isOperationToCeylon(JIsOp isOperation) {
"Check precedence"
assert (is ExistsNonemptyExpression operand = expressionToCeylon(isOperation.term));
"Must be a real type"
assert (is JStaticType type = isOperation.type);
return IsOperation(operand, typeToCeylon(type));
}
"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) {
if (is JIsOp jComparisonExpression = createParser(code).comparisonExpression()) {
return isOperationToCeylon(jComparisonExpression);
} else {
return null;
}
}