/// <summary>
/// http://www.ecma-international.org/ecma-262/5.1/#sec-12.13
/// </summary>
/// <param name="throwStatement"></param>
/// <returns></returns>
public Completion ExecuteThrowStatement(ThrowStatement throwStatement)
{
var exprRef = _engine.EvaluateExpression(throwStatement.Argument);
Completion c = new Completion(Completion.Throw, _engine.GetValue(exprRef), null);
c.Location = throwStatement.Location;
return c;
}
/// <summary>
/// http://www.ecma-international.org/ecma-262/5.1/#sec-12.10
/// </summary>
/// <param name="withStatement"></param>
/// <returns></returns>
public Completion ExecuteWithStatement(WithStatement withStatement)
{
var val = _engine.EvaluateExpression(withStatement.Object);
var obj = TypeConverter.ToObject(_engine, _engine.GetValue(val));
var oldEnv = _engine.ExecutionContext.LexicalEnvironment;
var newEnv = LexicalEnvironment.NewObjectEnvironment(_engine, obj, oldEnv, true);
_engine.ExecutionContext.LexicalEnvironment = newEnv;
Completion c;
try
{
c = ExecuteStatement(withStatement.Body);
}
catch (JavaScriptException e)
{
c = new Completion(Completion.Throw, e.Error, null);
c.Location = withStatement.Location;
}
finally
{
_engine.ExecutionContext.LexicalEnvironment = oldEnv;
}
return c;
}
public Completion ExecuteStatementList(IEnumerable<Statement> statementList)
{
var c = new Completion(Completion.Normal, null, null);
Completion sl = c;
Statement s = null;
try
{
foreach (var statement in statementList)
{
s = statement;
c = ExecuteStatement(statement);
if (c.Type != Completion.Normal)
{
return new Completion(c.Type, c.Value != null ? c.Value : sl.Value, c.Identifier)
{
Location = c.Location
};
}
sl = c;
}
}
catch(JavaScriptException v)
{
c = new Completion(Completion.Throw, v.Error, null);
c.Location = s.Location;
return c;
}
return new Completion(c.Type, c.GetValueOrDefault(), c.Identifier);
}
public Completion ExecuteStatementList(IList<Statement> statementList)
{
var c = new Completion(Completion.Normal, null, null);
Completion sl = c;
Statement s = null;
try
{
for (var i = 0; i < statementList.Count; i++)
{
s = statementList[i];
c = ExecuteStatement(s);
if (c.Type != Completion.Normal)
{
return new Completion(c.Type, c.Value.HasValue ? c.Value : sl.Value, c.Identifier)
{
Location = c.Location
};
}
sl = c;
}
}
catch (JavaScriptException v)
{
c = new Completion(Completion.Throw, v.Error, null);
if (s != null)
c.Location = s.Location;
return c;
}
return new Completion(c.Type, c.GetValueOrDefault(), c.Identifier);
}