public Compiler()
{
_engine = new ScriptEngine("jscript");
Debug.Assert(!string.IsNullOrWhiteSpace(LoadResource("compiler.js")));
_vm = _engine.Parse(LoadResource("compiler.js"));
}
private object Parse(string text, bool expression)
{
const string varName = "x___";
System.Runtime.InteropServices.ComTypes.EXCEPINFO exceptionInfo;
object result;
_engine.SetScriptState(ScriptState.Connected);
ScriptText flags = ScriptText.None;
if (expression)
{
flags |= ScriptText.IsExpression;
}
try
{
// immediate expression computation seems to work only for 64-bit
// so hack something for 32-bit...
if (_parse32 != null)
{
if (expression)
{
// should work for jscript & vbscript at least...
text = varName + "=" + text;
}
_parse32.ParseScriptText(text, null, null, null, IntPtr.Zero, 0, flags, out result, out exceptionInfo);
}
else
{
_parse64.ParseScriptText(text, null, null, null, IntPtr.Zero, 0, flags, out result, out exceptionInfo);
}
}
catch
{
if (_site._lastException != null)
throw _site._lastException;
throw;
}
IntPtr dispatch;
if (expression)
{
// continue out 32-bit hack...
if (_parse32 != null)
{
_engine.GetScriptDispatch(null, out dispatch);
object dp = Marshal.GetObjectForIUnknown(dispatch);
try
{
return dp.GetType().InvokeMember(varName, BindingFlags.GetProperty, null, dp, null);
}
catch
{
if (_site._lastException != null)
throw _site._lastException;
throw;
}
}
return result;
}
_engine.GetScriptDispatch(null, out dispatch);
ParsedScript parsed = new ParsedScript(this, dispatch);
return parsed;
}
