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ClearScript/ClearScript/Windows/WindowsScriptEngine.Site.cs at master · mbossX/ClearScript · GitHub
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// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT license.
using
System
;
using
System
.
Diagnostics
;
using
System
.
Globalization
;
using
System
.
Linq
;
using
System
.
Runtime
.
InteropServices
;
using
Microsoft
.
ClearScript
.
Util
;
using
EXCEPINFO
=
System
.
Runtime
.
InteropServices
.
ComTypes
.
EXCEPINFO
;
namespace
Microsoft
.
ClearScript
.
Windows
{
public
abstract
partial
class
WindowsScriptEngine
{
#region Nested type: ScriptSite
private
class
ScriptSite
:
IActiveScriptSite
,
IActiveScriptSiteInterruptPoll
,
IActiveScriptSiteWindow
,
IActiveScriptSiteDebug32
,
IActiveScriptSiteDebug64
,
IActiveScriptSiteDebugEx
,
ICustomQueryInterface
{
private
readonly
WindowsScriptEngine
engine
;
public
ScriptSite
(
WindowsScriptEngine
engine
)
{
this
.
engine
=
engine
;
}
private
string
GetDetails
(
object
error
,
string
message
)
{
if
(
engine
.
processDebugManager
!=
null
)
{
try
{
var
syntaxError
=
false
;
var
scriptError
=
error
as
IActiveScriptError
;
if
(
scriptError
!=
null
)
{
EXCEPINFO
excepInfo
;
scriptError
.
GetExceptionInfo
(
out
excepInfo
)
;
if
(
RawCOMHelpers
.
HResult
.
GetFacility
(
excepInfo
.
scode
)
==
RawCOMHelpers
.
HResult
.
FACILITY_CONTROL
)
{
syntaxError
=
engine
.
SyntaxErrorMap
.
ContainsKey
(
RawCOMHelpers
.
HResult
.
GetCode
(
excepInfo
.
scode
)
)
;
}
}
if
(
syntaxError
)
{
var
details
=
message
;
var
errorLocation
=
GetErrorLocation
(
error
)
;
if
(
!
string
.
IsNullOrWhiteSpace
(
errorLocation
)
)
{
details
+=
"
\n
"
+
errorLocation
;
}
var
stackTrace
=
engine
.
GetStackTraceInternal
(
)
;
if
(
!
string
.
IsNullOrWhiteSpace
(
stackTrace
)
)
{
details
+=
"
\n
"
+
stackTrace
;
}
return
details
;
}
else
{
var
stackTrace
=
engine
.
GetStackTraceInternal
(
)
;
if
(
!
string
.
IsNullOrWhiteSpace
(
stackTrace
)
)
{
return
message
+
"
\n
"
+
stackTrace
;
}
var
errorLocation
=
GetErrorLocation
(
error
)
;
if
(
!
string
.
IsNullOrWhiteSpace
(
errorLocation
)
)
{
return
message
+
"
\n
"
+
errorLocation
;
}
}
}
catch
(
Exception
exception
)
{
Debug
.
Assert
(
false
,
"Exception caught during error processing"
,
exception
.
ToString
(
)
)
;
}
}
return
message
;
}
private
string
GetErrorLocation
(
object
error
)
{
var
scriptError
=
error
as
IActiveScriptError
;
if
(
scriptError
!=
null
)
{
uint
sourceContext
;
uint
lineNumber
;
int
offsetInLine
;
scriptError
.
GetSourcePosition
(
out
sourceContext
,
out
lineNumber
,
out
offsetInLine
)
;
DebugDocument
document
;
if
(
engine
.
debugDocumentMap
.
TryGetValue
(
new
UIntPtr
(
sourceContext
)
,
out
document
)
)
{
string
documentName
;
document
.
GetName
(
DocumentNameType
.
Title
,
out
documentName
)
;
int
position
;
if
(
lineNumber
>
0
)
{
uint
linePosition
;
document
.
GetPositionOfLine
(
lineNumber
,
out
linePosition
)
;
position
=
(
int
)
linePosition
+
offsetInLine
;
}
else
{
position
=
offsetInLine
;
}
var
text
=
new
string
(
document
.
Code
.
Skip
(
position
)
.
TakeWhile
(
ch
=>
ch
!=
'
\n
'
)
.
ToArray
(
)
)
;
return
MiscHelpers
.
FormatInvariant
(
" at ({0}:{1}:{2}) -> {3}"
,
documentName
,
lineNumber
,
offsetInLine
,
text
)
;
}
}
return
null
;
}
#region IActiveScriptSite implementation
public
void
GetLCID
(
out
uint
lcid
)
{
lcid
=
(
uint
)
CultureInfo
.
CurrentCulture
.
LCID
;
}
public
void
GetItemInfo
(
string
name
,
ScriptInfoFlags
mask
,
ref
IntPtr
pUnkItem
,
ref
IntPtr
pTypeInfo
)
{
var
item
=
engine
.
hostItemMap
[
name
]
;
if
(
mask
.
HasFlag
(
ScriptInfoFlags
.
IUnknown
)
)
{
pUnkItem
=
Marshal
.
GetIDispatchForObject
(
item
)
;
}
if
(
mask
.
HasFlag
(
ScriptInfoFlags
.
ITypeInfo
)
)
{
pTypeInfo
=
Marshal
.
GetITypeInfoForType
(
item
.
GetType
(
)
)
;
}
}
public
void
GetDocVersionString
(
out
string
version
)
{
throw
new
NotImplementedException
(
)
;
}
public
void
OnScriptTerminate
(
IntPtr
pVarResult
,
ref
EXCEPINFO
excepInfo
)
{
}
public
void
OnStateChange
(
ScriptState
state
)
{
}
public
void
OnScriptError
(
IActiveScriptError
error
)
{
if
(
(
engine
.
CurrentScriptFrame
!=
null
)
&&
(
error
!=
null
)
)
{
EXCEPINFO
excepInfo
;
error
.
GetExceptionInfo
(
out
excepInfo
)
;
if
(
excepInfo
.
scode
==
RawCOMHelpers
.
HResult
.
E_ABORT
)
{
// Script execution was interrupted explicitly. At this point the script
// engine might be in an odd state; the following call seems to get it back
// to normal.
engine
.
activeScript
.
SetScriptState
(
ScriptState
.
Started
)
;
var
description
=
excepInfo
.
bstrDescription
??
"Script execution interrupted by host"
;
engine
.
CurrentScriptFrame
.
ScriptError
=
new
ScriptInterruptedException
(
engine
.
Name
,
description
,
GetDetails
(
error
,
description
)
,
excepInfo
.
scode
,
false
,
true
,
null
,
null
)
;
}
else
{
var
description
=
excepInfo
.
bstrDescription
;
Exception
innerException
;
if
(
excepInfo
.
scode
!=
RawCOMHelpers
.
HResult
.
CLEARSCRIPT_E_HOSTEXCEPTION
)
{
innerException
=
null
;
}
else
{
innerException
=
engine
.
CurrentScriptFrame
.
HostException
;
if
(
(
innerException
!=
null
)
&&
string
.
IsNullOrWhiteSpace
(
description
)
)
{
description
=
innerException
.
Message
;
}
}
engine
.
CurrentScriptFrame
.
ScriptError
=
new
ScriptEngineException
(
engine
.
Name
,
description
,
GetDetails
(
error
,
description
)
,
excepInfo
.
scode
,
false
,
true
,
null
,
innerException
)
;
}
}
}
public
void
OnEnterScript
(
)
{
Debug
.
Assert
(
engine
.
CheckAccess
(
)
)
;
}
public
void
OnLeaveScript
(
)
{
}
#endregion
#region IActiveScriptSiteInterruptPoll implementation
public
uint
QueryContinue
(
)
{
var
callback
=
engine
.
ContinuationCallback
;
var
keepGoing
=
(
(
callback
==
null
)
||
callback
(
)
)
;
if
(
engine
.
CurrentScriptFrame
!=
null
)
{
keepGoing
=
keepGoing
&&
!
engine
.
CurrentScriptFrame
.
InterruptRequested
;
}
return
keepGoing
?
RawCOMHelpers
.
HResult
.
S_OK
:
RawCOMHelpers
.
HResult
.
E_ABORT
.
ToUnsigned
(
)
;
}
#endregion
#region IActiveScriptSiteWindow implementation
public
void
GetWindow
(
out
IntPtr
hwnd
)
{
var
hostWindow
=
engine
.
HostWindow
;
hwnd
=
(
hostWindow
!=
null
)
?
hostWindow
.
OwnerHandle
:
IntPtr
.
Zero
;
}
public
void
EnableModeless
(
bool
enable
)
{
var
hostWindow
=
engine
.
HostWindow
;
if
(
hostWindow
!=
null
)
hostWindow
.
EnableModeless
(
enable
)
;
}
#endregion
#region IActiveScriptSiteDebug32 implementation
public
void
GetDocumentContextFromPosition
(
uint
sourceContext
,
uint
offset
,
uint
length
,
out
IDebugDocumentContext
context
)
{
context
=
null
;
DebugDocument
document
;
if
(
engine
.
debugDocumentMap
.
TryGetValue
(
new
UIntPtr
(
sourceContext
)
,
out
document
)
)
{
document
.
GetContextOfPosition
(
offset
,
length
,
out
context
)
;
}
}
public
void
GetApplication
(
out
IDebugApplication32
application
)
{
application
=
DebugApplicationWrapper32
.
Unwrap
(
engine
.
debugApplication
)
;
}
public
void
GetRootApplicationNode
(
out
IDebugApplicationNode
node
)
{
engine
.
debugApplication
.
GetRootNode
(
out
node
)
;
}
public
void
OnScriptErrorDebug
(
IActiveScriptErrorDebug
errorDebug
,
out
bool
enterDebugger
,
out
bool
callOnScriptErrorWhenContinuing
)
{
if
(
(
engine
.
CurrentScriptFrame
!=
null
)
&&
(
errorDebug
!=
null
)
)
{
EXCEPINFO
excepInfo
;
errorDebug
.
GetExceptionInfo
(
out
excepInfo
)
;
if
(
excepInfo
.
scode
==
RawCOMHelpers
.
HResult
.
E_ABORT
)
{
var
description
=
excepInfo
.
bstrDescription
??
"Script execution interrupted by host"
;
engine
.
CurrentScriptFrame
.
PendingScriptError
=
new
ScriptInterruptedException
(
engine
.
Name
,
description
,
GetDetails
(
errorDebug
,
description
)
,
excepInfo
.
scode
,
false
,
true
,
null
,
null
)
;
}
else
{
var
description
=
excepInfo
.
bstrDescription
;
Exception
innerException
;
if
(
excepInfo
.
scode
!=
RawCOMHelpers
.
HResult
.
CLEARSCRIPT_E_HOSTEXCEPTION
)
{
innerException
=
null
;
}
else
{
innerException
=
engine
.
CurrentScriptFrame
.
HostException
;
if
(
(
innerException
!=
null
)
&&
string
.
IsNullOrWhiteSpace
(
description
)
)
{
description
=
innerException
.
Message
;
}
}
engine
.
CurrentScriptFrame
.
PendingScriptError
=
new
ScriptEngineException
(
engine
.
Name
,
description
,
GetDetails
(
errorDebug
,
description
)
,
excepInfo
.
scode
,
false
,
true
,
null
,
innerException
)
;
}
}
enterDebugger
=
engine
.
engineFlags
.
HasFlag
(
WindowsScriptEngineFlags
.
EnableJITDebugging
)
;
callOnScriptErrorWhenContinuing
=
true
;
}
#endregion
#region IActiveScriptSiteDebug64 implementation
public
void
GetDocumentContextFromPosition
(
ulong
sourceContext
,
uint
offset
,
uint
length
,
out
IDebugDocumentContext
context
)
{
context
=
null
;
DebugDocument
document
;
if
(
engine
.
debugDocumentMap
.
TryGetValue
(
new
UIntPtr
(
sourceContext
)
,
out
document
)
)
{
document
.
GetContextOfPosition
(
offset
,
length
,
out
context
)
;
}
}
public
void
GetApplication
(
out
IDebugApplication64
application
)
{
application
=
DebugApplicationWrapper64
.
Unwrap
(
engine
.
debugApplication
)
;
}
#endregion
#region IActiveScriptSiteDebugEx implementation
public
void
OnCanNotJITScriptErrorDebug
(
IActiveScriptErrorDebug
errorDebug
,
out
bool
callOnScriptErrorWhenContinuing
)
{
bool
enterDebugger
;
OnScriptErrorDebug
(
errorDebug
,
out
enterDebugger
,
out
callOnScriptErrorWhenContinuing
)
;
}
#endregion
#region ICustomQueryInterface implementation
public
CustomQueryInterfaceResult
GetInterface
(
ref
Guid
iid
,
out
IntPtr
pInterface
)
{
pInterface
=
IntPtr
.
Zero
;
if
(
(
iid
==
typeof
(
IActiveScriptSiteDebug32
)
.
GUID
)
||
(
iid
==
typeof
(
IActiveScriptSiteDebug64
)
.
GUID
)
||
(
iid
==
typeof
(
IActiveScriptSiteDebugEx
)
.
GUID
)
)
{
return
(
engine
.
processDebugManager
!=
null
)
?
CustomQueryInterfaceResult
.
NotHandled
:
CustomQueryInterfaceResult
.
Failed
;
}
if
(
iid
==
typeof
(
IActiveScriptSiteWindow
)
.
GUID
)
{
return
(
engine
.
HostWindow
!=
null
)
?
CustomQueryInterfaceResult
.
NotHandled
:
CustomQueryInterfaceResult
.
Failed
;
}
return
CustomQueryInterfaceResult
.
NotHandled
;
}
#endregion
}
#endregion
}
}
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