public virtual object VisitDoLoopStatement(DoLoopStatement doLoopStatement, object data) {
Debug.Assert((doLoopStatement != null));
Debug.Assert((doLoopStatement.Condition != null));
Debug.Assert((doLoopStatement.EmbeddedStatement != null));
doLoopStatement.Condition.AcceptVisitor(this, data);
return doLoopStatement.EmbeddedStatement.AcceptVisitor(this, data);
}
public virtual object VisitDoLoopStatement(DoLoopStatement doLoopStatement, object data) {
Debug.Assert((doLoopStatement != null));
Debug.Assert((doLoopStatement.Condition != null));
Debug.Assert((doLoopStatement.EmbeddedStatement != null));
nodeStack.Push(doLoopStatement.Condition);
doLoopStatement.Condition.AcceptVisitor(this, data);
doLoopStatement.Condition = ((Expression)(nodeStack.Pop()));
nodeStack.Push(doLoopStatement.EmbeddedStatement);
doLoopStatement.EmbeddedStatement.AcceptVisitor(this, data);
doLoopStatement.EmbeddedStatement = ((Statement)(nodeStack.Pop()));
return null;
}
public virtual object VisitDoLoopStatement(DoLoopStatement doLoopStatement, object data) {
throw new global::System.NotImplementedException("DoLoopStatement");
}
void DoLoopStatement(out Statement statement) {
Expression expr = null; Statement embeddedStatement; statement = null;
Expect(108);
ConditionType conditionType = ConditionType.None;
if (la.kind == 224 || la.kind == 231) {
WhileOrUntil(out conditionType);
Expr(out expr);
EndOfStmt();
Block(out embeddedStatement);
Expect(152);
statement = new DoLoopStatement(expr,
embeddedStatement,
conditionType == ConditionType.While ? ConditionType.DoWhile : conditionType,
ConditionPosition.Start);
} else if (la.kind == 1 || la.kind == 21) {
EndOfStmt();
Block(out embeddedStatement);
Expect(152);
if (la.kind == 224 || la.kind == 231) {
WhileOrUntil(out conditionType);
Expr(out expr);
}
statement = new DoLoopStatement(expr, embeddedStatement, conditionType, ConditionPosition.End);
} else SynErr(308);
}
void WhileStatement(out Statement statement) {
Expression expr = null; Statement embeddedStatement;
Expect(231);
Expr(out expr);
EndOfStmt();
Block(out embeddedStatement);
Expect(113);
Expect(231);
statement = new DoLoopStatement(expr, embeddedStatement, ConditionType.While, ConditionPosition.Start);
}
public virtual object TrackedVisitDoLoopStatement(DoLoopStatement doLoopStatement, object data) {
return base.VisitDoLoopStatement(doLoopStatement, data);
}
public sealed override object VisitDoLoopStatement(DoLoopStatement doLoopStatement, object data) {
this.BeginVisit(doLoopStatement);
object result = this.TrackedVisitDoLoopStatement(doLoopStatement, data);
this.EndVisit(doLoopStatement);
return result;
}
// RG:
public override object VisitDoLoopStatement(DoLoopStatement doLoopStatement, object data)
{
CodeIterationStatement forLoop = new CodeIterationStatement();
breakableStack.Push(new Breakable());
codeStack.Push(NullStmtCollection);
if (doLoopStatement.ConditionPosition == ConditionPosition.End)
{
// do { } while (expr);
//
// emulate with:
// for (bool _do = true; _do; _do = expr) {}
//
doId++;
string name = "_do" + doId;
forLoop.InitStatement = new CodeVariableDeclarationStatement(typeof(System.Boolean), name, new CodePrimitiveExpression(true));
forLoop.TestExpression = new CodeVariableReferenceExpression(name);
forLoop.IncrementStatement = new CodeAssignStatement(new CodeVariableReferenceExpression(name),
doLoopStatement.Condition == null ? new CodePrimitiveExpression(true) : (CodeExpression)doLoopStatement.Condition.AcceptVisitor(this, data));
}
else
{
// while (expr) {}
//
// emulate with:
// for (; expr;) {}
//
// Empty Init and Increment Statements
forLoop.InitStatement = new CodeExpressionStatement(new CodeSnippetExpression());
forLoop.IncrementStatement = new CodeExpressionStatement(new CodeSnippetExpression());
if (doLoopStatement.Condition == null)
{
forLoop.TestExpression = new CodePrimitiveExpression(true);
}
else
{
forLoop.TestExpression = (CodeExpression)doLoopStatement.Condition.AcceptVisitor(this, data);
}
}
codeStack.Pop();
codeStack.Push(forLoop.Statements);
doLoopStatement.EmbeddedStatement.AcceptVisitor(this, data);
codeStack.Pop();
if (forLoop.Statements.Count == 0)
{
forLoop.Statements.Add(new CodeSnippetStatement());
}
Breakable breakable = breakableStack.Pop();
if (breakable.IsContinue)
{
forLoop.Statements.Add(new CodeSnippetStatement());
forLoop.Statements.Add(new CodeLabeledStatement("continue" + breakable.Id, new CodeExpressionStatement(new CodeSnippetExpression())));
}
AddStmt(forLoop);
if (breakable.IsBreak)
{
AddStmt(new CodeLabeledStatement("break" + breakable.Id, new CodeExpressionStatement(new CodeSnippetExpression())));
}
return forLoop;
}
