public override void VisitSwitchStatement(SwitchStatement switchStatement) {
var compiledExpr = CompileExpression(switchStatement.Expression, CompileExpressionFlags.ReturnValueIsImportant);
_result.AddRange(compiledExpr.AdditionalStatements);
var oldGotoCaseMap = _currentGotoCaseMap;
var gotoCaseData = new GatherGotoCaseAndDefaultDataVisitor(_resolver, _nextLabelIndex).Process(switchStatement);
_currentGotoCaseMap = gotoCaseData.Item2;
var caseClauses = new List<JsSwitchSection>();
foreach (var section in switchStatement.SwitchSections) {
SetRegion(section.GetRegion());
var values = new List<JsExpression>();
foreach (var v in section.CaseLabels) {
if (v.Expression.IsNull) {
values.Add(null); // Default
}
else {
var rr = _resolver.Resolve(v.Expression);
object value = rr.ConstantValue;
if (rr is MemberResolveResult && ((MemberResolveResult)rr).Member is IField) {
var sem = _metadataImporter.GetFieldSemantics((IField)((MemberResolveResult)rr).Member);
if (sem.Type == FieldScriptSemantics.ImplType.Constant)
value = sem.Value;
}
if (value == null) {
values.Add(JsExpression.Null);
}
else if (value is string) {
values.Add(JsExpression.String((string)value));
}
else {
values.Add(JsExpression.Number((int)Convert.ChangeType(value, typeof(int))));
}
}
}
var ic = CreateInnerCompiler();
IList<JsStatement> statements;
if (section.Statements.Count == 1 && section.Statements.First() is BlockStatement) {
statements = ic.Compile(section.Statements.First()).Statements;
}
else {
ic.VisitChildren(section);
statements = ic._result;
}
if (gotoCaseData.Item1.ContainsKey(section))
statements = new[] { JsStatement.Label(gotoCaseData.Item1[section], statements[0]) }.Concat(statements.Skip(1)).ToList();
caseClauses.Add(JsStatement.SwitchSection(values, JsStatement.Block(statements)));
}
_result.Add(JsStatement.Switch(compiledExpr.Expression, caseClauses));
_currentGotoCaseMap = oldGotoCaseMap;
}
public override void VisitSwitchStatement(SwitchStatement switchStatement)
{
var compiledExpr = CompileExpression(switchStatement.Expression, true);
_result.AddRange(compiledExpr.AdditionalStatements);
var oldGotoCaseMap = _currentGotoCaseMap;
var gotoCaseData = new GatherGotoCaseAndDefaultDataVisitor(_resolver, _nextLabelIndex).Process(switchStatement);
_currentGotoCaseMap = gotoCaseData.Item2;
var caseClauses = new List<JsSwitchSection>();
foreach (var section in switchStatement.SwitchSections) {
var values = new List<JsExpression>();
foreach (var v in section.CaseLabels) {
if (v.Expression.IsNull) {
values.Add(null); // Default
}
else {
var rr = _resolver.Resolve(v.Expression);
if (rr.ConstantValue == null) {
values.Add(JsExpression.Null);
}
else if (rr.ConstantValue is string) {
values.Add(JsExpression.String((string)rr.ConstantValue));
}
else {
values.Add(JsExpression.Number((int)Convert.ChangeType(rr.ConstantValue, typeof(int))));
}
}
}
var statements = section.Statements.SelectMany(stmt => CreateInnerCompiler().Compile(stmt).Statements);
if (gotoCaseData.Item1.ContainsKey(section))
statements = new[] { new JsLabelStatement(gotoCaseData.Item1[section]) }.Concat(statements);
caseClauses.Add(new JsSwitchSection(values, new JsBlockStatement(statements)));
}
_result.Add(new JsSwitchStatement(compiledExpr.Expression, caseClauses));
_currentGotoCaseMap = oldGotoCaseMap;
}
