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//
// BaseVsaEngine.cs:
//
// Author:
// Cesar Lopez Nataren (cesar@ciencias.unam.mx)
//
// (C) 2003, Cesar Lopez Nataren
//
using System;
using System.Reflection;
using System.Security.Policy;
using System.Threading;
using Microsoft.JScript;
using Microsoft.JScript.Vsa;
namespace Microsoft.Vsa {
public abstract class BaseVsaEngine : IVsaEngine {
private const int ROOT_MONIKER_MAX_SIZE = 256;
private bool monikerAlreadySet;
private string rootMoniker;
private bool closed;
private bool busy;
private bool empty;
private bool siteAlreadySet;
private bool running;
private bool namespaceNotSet;
private bool supportDebug;
private bool generateDebugInfo;
protected bool compiled;
private bool dirty;
private bool initNewCalled;
private IVsaSite site;
private IVsaItems items;
// its default value has to be "JScript"
private string language;
private string version;
private int lcid;
private Assembly assembly;
private Evidence evidence;
private string name;
private string rootNamespace;
// FIXME: must set vars to proper values
internal BaseVsaEngine ()
{}
public BaseVsaEngine (string language, string version, bool supportDebug)
{
this.language = language;
// FIXME: I think we must ensure that version it's
// compliant with versionformat Major.Minor.Build.Revision.
// Not sure about what Exception throw.
this.version = version;
this.supportDebug = supportDebug;
this.site = null;
this.rootMoniker = "";
this.running = false;
this.evidence = null;
this.compiled = false;
this.dirty = false;
this.lcid = Thread.CurrentThread.CurrentCulture.LCID;
this.name = "";
this.rootNamespace = "";
this.namespaceNotSet = true;
this.initNewCalled = false;
this.generateDebugInfo = false;
this.closed = false;
this.items = null;
this.siteAlreadySet = false;
}
public System._AppDomain AppDomain {
get { throw new NotImplementedException (); }
set { throw new NotImplementedException (); }
}
// FIXME: research if we can use "get" Evidence when: running and busy.
public Evidence Evidence {
get {
if (closed)
throw new VsaException (VsaError.EngineClosed);
else if (!initNewCalled)
throw new VsaException (VsaError.EngineNotInitialized);
return evidence;
}
set {
if (closed)
throw new VsaException (VsaError.EngineClosed);
else if (running)
throw new VsaException (VsaError.EngineRunning);
else if (busy)
throw new VsaException (VsaError.EngineBusy);
else if (!initNewCalled)
throw new VsaException (VsaError.EngineNotInitialized);
evidence = value;
}
}
public string ApplicationBase {
get { throw new NotImplementedException (); }
set { throw new NotImplementedException (); }
}
public Assembly Assembly {
get {
if (closed)
throw new VsaException (VsaError.EngineClosed);
else if (!running)
throw new VsaException (VsaError.EngineNotRunning);
else if (busy)
throw new VsaException (VsaError.EngineBusy);
return assembly;
}
}
// FIXME: research if we can "get" it when running and busy.
// FIXME: when do we throw VsaException with
// VsaError set to DebugInfoNotSupported?
public bool GenerateDebugInfo {
get {
if (closed)
throw new VsaException (VsaError.EngineClosed);
else if (!initNewCalled)
throw new VsaException (VsaError.EngineNotInitialized);
return generateDebugInfo;
}
set {
if (closed)
throw new VsaException (VsaError.EngineClosed);
else if (running)
throw new VsaException (VsaError.EngineRunning);
else if (busy)
throw new VsaException (VsaError.EngineBusy);
else if (!initNewCalled)
throw new VsaException (VsaError.EngineNotInitialized);
else if (!supportDebug)
throw new VsaException (VsaError.DebugInfoNotSupported);
generateDebugInfo = value;
}
}
public bool IsCompiled {
get {
if (dirty)
return false;
else if (closed)
throw new VsaException (VsaError.EngineClosed);
else if (busy)
throw new VsaException (VsaError.EngineBusy);
else if (!initNewCalled)
throw new VsaException (VsaError.EngineNotInitialized);
return compiled;
}
}
// FIXME: Research if we can "set" it when running
public bool IsDirty {
set {
if (closed)
throw new VsaException (VsaError.EngineClosed);
dirty = value;
}
get {
if (closed)
throw new VsaException (VsaError.EngineClosed);
else if (busy)
throw new VsaException (VsaError.EngineBusy);
else if (!initNewCalled)
throw new VsaException (VsaError.EngineNotInitialized);
return dirty;
}
}
public bool IsRunning {
get {
if (closed)
throw new VsaException (VsaError.EngineClosed);
else if (busy)
throw new VsaException (VsaError.EngineBusy);
else if (!initNewCalled)
throw new VsaException (VsaError.EngineNotInitialized);
return running;
}
}
public IVsaItems Items {
get {
if (closed)
throw new VsaException (VsaError.EngineClosed);
else if (busy)
throw new VsaException (VsaError.EngineBusy);
else if (!initNewCalled)
throw new VsaException (VsaError.EngineNotInitialized);
items = new VsaItems ((VsaEngine) this);
return items;
}
}
public string Language {
get {
if (closed)
throw new VsaException (VsaError.EngineClosed);
else if (busy)
throw new VsaException (VsaError.EngineBusy);
else if (!initNewCalled)
throw new VsaException (VsaError.EngineNotInitialized);
return language;
}
}
// FIXME: research when LCIDNotSupported gets thrown.
public int LCID {
get {
if (closed)
throw new VsaException (VsaError.EngineClosed);
else if (busy)
throw new VsaException (VsaError.EngineBusy);
else if (!initNewCalled)
throw new VsaException (VsaError.EngineNotInitialized);
else if (running)
throw new VsaException (VsaError.EngineRunning);
return lcid;
}
set {
if (closed)
throw new VsaException (VsaError.EngineClosed);
else if (busy)
throw new VsaException (VsaError.EngineBusy);
else if (!initNewCalled)
throw new VsaException (VsaError.EngineNotInitialized);
else if (running)
throw new VsaException (VsaError.EngineRunning);
lcid = value;
}
}
// FIXME: we must throw VsaException, VsaError set to EngineNameInUse
// when setting and name is already in use.
public string Name {
get {
if (closed)
throw new VsaException (VsaError.EngineClosed);
else if (busy)
throw new VsaException (VsaError.EngineBusy);
else if (!initNewCalled)
throw new VsaException (VsaError.EngineNotInitialized);
else if (running)
throw new VsaException (VsaError.EngineRunning);
return name;
}
set {
if (closed)
throw new VsaException (VsaError.EngineClosed);
else if (busy)
throw new VsaException (VsaError.EngineBusy);
else if (!initNewCalled)
throw new VsaException (VsaError.EngineNotInitialized);
else if (running)
throw new VsaException (VsaError.EngineRunning);
name = value;
}
}
// FIXME: We have to check - when setting - that the moniker
// is not already in use.
public string RootMoniker {
get {
if (closed)
throw new VsaException (VsaError.EngineClosed);
else if (busy)
throw new VsaException (VsaError.EngineBusy);
return rootMoniker;
}
set {
if (monikerAlreadySet)
throw new VsaException (VsaError.RootMonikerAlreadySet);
else if (closed)
throw new VsaException (VsaError.EngineClosed);
else if (busy)
throw new VsaException (VsaError.EngineBusy);
else {
MonikerState state = ValidateRootMoniker (value);
switch (state) {
case MonikerState.Valid:
rootMoniker = value;
monikerAlreadySet = true;
break;
case MonikerState.Invalid:
throw new VsaException (VsaError.RootMonikerInvalid);
case MonikerState.ProtocolInvalid:
throw new VsaException (VsaError.RootMonikerProtocolInvalid);
}
}
}
}
internal static MonikerState ValidateRootMoniker (string n)
{
if (n == null || n == "" || n.Length > ROOT_MONIKER_MAX_SIZE)
return MonikerState.Invalid;
try {
Uri uri = new Uri (n);
string protocol = uri.Scheme;
if (protocol == "http" || protocol == "file" ||
protocol == "ftp" || protocol == "gopher" ||
protocol == "https" || protocol == "mailto")
return MonikerState.ProtocolInvalid;
return MonikerState.Valid;
} catch (UriFormatException e) {
return MonikerState.Invalid;
}
}
// FIXME: we must check - when setting - that the value is a valid
// namespace (research what does that mean :-)). If not the case
// VsaException must be thrown, set to VsaError.NamespaceInvalid
public string RootNamespace {
get {
if (closed)
throw new VsaException (VsaError.EngineClosed);
else if (busy)
throw new VsaException (VsaError.EngineBusy);
else if (!initNewCalled)
throw new VsaException (VsaError.EngineNotInitialized);
else if (running)
throw new VsaException (VsaError.EngineRunning);
return rootNamespace;
}
set {
if (closed)
throw new VsaException (VsaError.EngineClosed);
else if (busy)
throw new VsaException (VsaError.EngineBusy);
else if (!initNewCalled)
throw new VsaException (VsaError.EngineNotInitialized);
else if (running)
throw new VsaException (VsaError.EngineRunning);
rootNamespace = value;
namespaceNotSet = false;
}
}
public IVsaSite Site {
get {
if (closed)
throw new VsaException (VsaError.EngineClosed);
else if (busy)
throw new VsaException (VsaError.EngineBusy);
else if (!monikerAlreadySet)
throw new VsaException (VsaError.RootMonikerNotSet);
return site;
}
set {
if (!monikerAlreadySet)
throw new VsaException (VsaError.RootMonikerNotSet);
else if (siteAlreadySet)
throw new VsaException (VsaError.SiteAlreadySet);
else if (closed)
throw new VsaException (VsaError.EngineClosed);
else if (busy)
throw new VsaException (VsaError.EngineBusy);
else if (value == null)
throw new VsaException (VsaError.SiteInvalid);
site = value;
siteAlreadySet = true;
}
}
//
// Version Format: Major.Minor.Revision.Build
//
public string Version {
get {
if (closed)
throw new VsaException (VsaError.EngineClosed);
else if (busy)
throw new VsaException (VsaError.EngineBusy);
else if (!initNewCalled)
throw new VsaException (VsaError.EngineNotInitialized);
return version;
}
}
public virtual void Close ()
{
if (running)
Reset ();
else if (closed)
throw new VsaException (VsaError.EngineClosed);
else if (busy)
throw new VsaException (VsaError.EngineBusy);
running = false;
closed = true;
}
//
// Count that AssemblyExpected exception may be thrown.
//
public virtual bool Compile ()
{
if (closed)
throw new VsaException (VsaError.EngineClosed);
else if (busy)
throw new VsaException (VsaError.EngineBusy);
else if (empty)
throw new VsaException (VsaError.EngineEmpty);
else if (running)
throw new VsaException (VsaError.EngineRunning);
else if (!initNewCalled)
throw new VsaException (VsaError.EngineNotInitialized);
else if (namespaceNotSet)
throw new VsaException (VsaError.RootNamespaceNotSet);
return false;
}
public virtual object GetOption (string name)
{
object opt;
try {
opt = GetSpecificOption (name);
} catch (VsaException e) {
throw;
}
return opt;
}
protected abstract object GetSpecificOption (string name);
protected abstract void SetSpecificOption (string name, object val);
public virtual void InitNew ()
{
if (closed)
throw new VsaException (VsaError.EngineClosed);
else if (busy)
throw new VsaException (VsaError.EngineBusy);
else if (initNewCalled)
throw new VsaException (VsaError.EngineInitialized);
else if (!monikerAlreadySet)
throw new VsaException (VsaError.RootMonikerNotSet);
else if (!siteAlreadySet)
throw new VsaException (VsaError.SiteNotSet);
initNewCalled = true;
}
public virtual void LoadSourceState (IVsaPersistSite site)
{
throw new NotImplementedException ();
}
public virtual void Reset ()
{
if (closed)
throw new VsaException (VsaError.EngineClosed);
else if (busy)
throw new VsaException (VsaError.EngineBusy);
else if (!running)
throw new VsaException (VsaError.EngineNotRunning);
running = false;
assembly = null;
}
public virtual void RevokeCache ()
{
throw new NotImplementedException ();
}
public virtual void Run ()
{
if (closed)
throw new VsaException (VsaError.EngineClosed);
else if (busy)
throw new VsaException (VsaError.EngineBusy);
else if (running)
throw new VsaException (VsaError.EngineRunning);
else if (!monikerAlreadySet)
throw new VsaException (VsaError.RootMonikerNotSet);
else if (!siteAlreadySet)
throw new VsaException (VsaError.SiteNotSet);
else if (namespaceNotSet)
throw new VsaException (VsaError.RootNamespaceNotSet);
running = true;
}
public virtual void SetOption (string name, object value)
{
dirty = true;
}
public virtual void SaveCompiledState (out byte [] pe, out byte [] debugInfo)
{
throw new NotImplementedException ();
}
public virtual void SaveSourceState (IVsaPersistSite site)
{
throw new NotImplementedException ();
}
public abstract bool IsValidIdentifier (string ident);
internal bool Closed {
get { return closed; }
}
internal bool Running {
get { return running; }
}
internal bool Busy {
get { return busy; }
}
internal bool InitNewCalled {
get { return initNewCalled; }
set { initNewCalled = value; }
}
}
public class BaseVsaSite : IVsaSite {
public virtual byte [] Assembly {
get { throw new NotImplementedException (); }
}
public virtual byte [] DebugInfo {
get { throw new NotImplementedException (); }
}
public virtual void GetCompiledState (out byte [] pe, out byte [] debugInfo)
{
throw new NotImplementedException ();
}
public virtual object GetEventSourceInstance (string itemName, string eventSourceName)
{
throw new NotImplementedException ();
}
public virtual object GetGlobalInstance (string name)
{
throw new NotImplementedException ();
}
public virtual void Notify (string notify, object optional)
{
throw new NotImplementedException ();
}
public virtual bool OnCompilerError (IVsaError error)
{
throw new NotImplementedException ();
}
}
public abstract class BaseVsaStartup {
public void SetSite (IVsaSite site)
{
throw new NotImplementedException ();
}
public abstract void Startup ();
public abstract void Shutdown ();
}
internal enum MonikerState {
Valid,
Invalid,
ProtocolInvalid
}
}
|