SwitchCaseElseExpression.ceylon
import ceylon.ast.core {
DisjoiningExpression,
IfElseExpression,
LetExpression,
Node,
SwitchCaseElseExpression
}
import com.redhat.ceylon.compiler.typechecker.tree {
JNode=Node,
Tree {
JSwitchExpression=SwitchExpression
}
}
import ceylon.interop.java {
CeylonIterable
}
"Converts a RedHat AST [[SwitchExpression|JSwitchExpression]] to a `ceylon.ast` [[SwitchCaseElseExpression]]."
shared SwitchCaseElseExpression switchCaseElseExpressionToCeylon(JSwitchExpression switchCaseElseExpression, Anything(JNode,Node) update = noop) {
assert (nonempty caseClauses = CeylonIterable(switchCaseElseExpression.switchCaseList.caseClauses).collect(propagateUpdate(caseExpressionToCeylon, update)));
DisjoiningExpression|IfElseExpression|LetExpression? elseExpression;
if (exists jElseClause = switchCaseElseExpression.switchCaseList.elseClause) {
assert (is DisjoiningExpression|IfElseExpression|LetExpression expr = expressionToCeylon(jElseClause.expression, update));
elseExpression = expr;
} else {
elseExpression = null;
}
value result = SwitchCaseElseExpression(switchClauseToCeylon(switchCaseElseExpression.switchClause, update), caseClauses, elseExpression);
update(switchCaseElseExpression, result);
return result;
}
"Compiles the given [[code]] for a Switch Case Else Expression
into a [[SwitchCaseElseExpression]] using the Ceylon compiler
(more specifically, the rule for a `switchExpression`)."
shared SwitchCaseElseExpression? compileSwitchCaseElseExpression(String code, Anything(JNode,Node) update = noop) {
if (exists jSwitchExpression = createParser(code).switchExpression()) {
return switchCaseElseExpressionToCeylon(jSwitchExpression, update);
} else {
return null;
}
}