public void Visit(WhileStatement statement)
{
statement.Condition.Accept(this);
EnsureIdentifierIsDefined(Result);
while (Result.ToBoolean()) {
statement.Statement.Accept(this);
ResetContinueIfPresent(statement.Label);
if (StopStatementFlow()) {
if (breakStatement != null && statement.Label == breakStatement.Label) {
breakStatement = null;
}
return;
}
statement.Condition.Accept(this);
}
}
public void Visit(BreakStatement expression)
{
Builder.Append("break;");
}
public void Visit(ForStatement statement)
{
if (statement.InitialisationStatement != null)
statement.InitialisationStatement.Accept(this);
if (statement.ConditionExpression != null)
statement.ConditionExpression.Accept(this);
else
Result = Global.BooleanClass.New(true);
EnsureIdentifierIsDefined(Result);
while (Result.ToBoolean()) {
statement.Statement.Accept(this);
ResetContinueIfPresent(statement.Label);
if (StopStatementFlow()) {
if (breakStatement != null && statement.Label == breakStatement.Label) {
breakStatement = null;
}
return;
}
// Goes back in the scopes so that the variables are accessible after the statement
if (statement.IncrementExpression != null)
statement.IncrementExpression.Accept(this);
if (statement.ConditionExpression != null)
statement.ConditionExpression.Accept(this);
else
Result = Global.BooleanClass.New(true);
}
}
public void Visit(SwitchStatement statement)
{
CurrentStatement = statement.Expression;
bool found = false;
if (statement.CaseClauses != null) {
foreach (var clause in statement.CaseClauses) {
CurrentStatement = clause.Expression;
if (found) {
// jumping from one case to the next one
clause.Statements.Accept(this);
if (exit)
break;
} else {
new BinaryExpression(BinaryExpressionType.Equal, (Expression)statement.Expression, clause.Expression).Accept(this);
if (Result.ToBoolean()) {
clause.Statements.Accept(this);
found = true;
if (exit)
break;
}
}
if (breakStatement != null) {
breakStatement = null;
break;
}
}
}
if (!found && statement.DefaultStatements!= null) {
statement.DefaultStatements.Accept(this);
// handle break statements in default case by clearing it
if (breakStatement != null) {
breakStatement = null;
}
}
}
public void Visit(ForEachInStatement statement)
{
// todo: may be declare own property in the current scope if not a globalDeclaration?
bool globalDeclaration = true;
string identifier = String.Empty;
if (statement.InitialisationStatement is VariableDeclarationStatement) {
globalDeclaration = ((VariableDeclarationStatement)statement.InitialisationStatement).Global;
identifier = ((VariableDeclarationStatement)statement.InitialisationStatement).Identifier;
}
else if (statement.InitialisationStatement is Identifier) {
globalDeclaration = true;
identifier = ((Identifier)statement.InitialisationStatement).Text;
}
else {
throw new NotSupportedException("Only variable declaration are allowed in a for in loop");
}
statement.Expression.Accept(this);
var dictionary = Result as JsDictionaryObject;
if (Result.Value is IEnumerable) {
foreach (object value in (IEnumerable)Result.Value) {
CurrentScope[identifier] = Global.WrapClr(value);
statement.Statement.Accept(this);
ResetContinueIfPresent(statement.Label);
if (StopStatementFlow()) {
if (breakStatement != null && statement.Label == breakStatement.Label) {
breakStatement = null;
}
return;
}
ResetContinueIfPresent(statement.Label);
}
}
else if (dictionary != null) {
List<string> keys = new List<string>(dictionary.GetKeys());
// Uses a for loop as it might be changed by the inner statements
for (int i = 0; i < keys.Count; i++) {
string value = keys[i];
CurrentScope[identifier] = Global.StringClass.New(value);
statement.Statement.Accept(this);
ResetContinueIfPresent(statement.Label);
if (StopStatementFlow()) {
if (breakStatement != null && statement.Label == breakStatement.Label) {
breakStatement = null;
}
return;
}
ResetContinueIfPresent(statement.Label);
}
}
else {
throw new InvalidOperationException("The property can't be enumerated");
}
}
public void Visit(BreakStatement statement)
{
breakStatement = statement;
}
public void Visit(WhileStatement statement)
{
JsObject scope = new JsObject();
EnterScope(scope);
try
{
statement.Condition.Accept(this);
while (Result.ToBoolean())
{
statement.Statement.Accept(this);
ResetContinueIfPresent(statement.Label);
if (StopStatementFlow())
{
if (breakStatement != null && statement.Label == breakStatement.Label)
{
breakStatement = null;
}
return;
}
statement.Condition.Accept(this);
}
}
finally
{
ExitScope();
}
}
void Analyze(BreakStatement Stmt)
{
SetCurrentLineAndCharNos(Stmt);
}
public void Visit(DoWhileStatement statement)
{
/*JsObject scope = new JsObject();
EnterScope(scope);
try {*/
do {
statement.Statement.Accept(this);
ResetContinueIfPresent(statement.Label);
if (StopStatementFlow()) {
if (breakStatement != null && statement.Label == breakStatement.Label) {
breakStatement = null;
}
//ExitScope();
return;
}
statement.Condition.Accept(this);
EnsureIdentifierIsDefined(Result);
} while (Result.ToBoolean());
/*}
finally {
ExitScope();
}*/
}
