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SpecialVars.cs
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SpecialVars.cs
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//
// Copyright (c) Microsoft Corporation.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
//
using System;
using System.Collections.Generic;
using System.Linq;
using System.Management.Automation;
namespace Microsoft.Windows.PowerShell.ScriptAnalyzer
{
internal class SpecialVars
{
internal static object ThisVariable = new object();
internal const string @foreach = "foreach";
internal const string @switch = "switch";
internal const string Question = "?";
internal const string Underbar = "_";
internal const string Args = "args";
internal const string This = "this";
internal const string Input = "input";
internal const string PSCmdlet = "PSCmdlet";
internal const string PSBoundParameters = "PSBoundParameters";
internal const string MyInvocation = "MyInvocation";
internal const string PSScriptRoot = "PSScriptRoot";
internal const string PSCommandPath = "PSCommandPath";
internal const string ExecutionContext = "ExecutionContext";
internal const string Matches = "Matches";
internal const string PSVersionTable = "PSVersionTable";
internal const string OFS = "OFS";
internal static readonly string[] InitializedVariables;
static SpecialVars()
{
InitializedVariables = new string[]
{
@foreach,
@switch,
Question
};
InitializedVariables = InitializedVariables.Concat(
AutomaticVariables.Concat(
PreferenceVariables.Concat(
OtherInitializedVariables))).ToArray();
}
internal static readonly string[] AutomaticVariables = new string[]
{
Underbar,
Args,
This,
Input,
PSCmdlet,
PSBoundParameters,
MyInvocation,
PSScriptRoot,
PSCommandPath,
ExecutionContext,
Matches,
PSVersionTable,
OFS
};
internal static readonly Type[] AutomaticVariableTypes = new Type[]
{
/* Underbar */ typeof(object),
/* Args */ typeof(object[]),
/* This */ typeof(object),
/* Input */ typeof(object),
/* PSCmdlet */ typeof(PSCmdlet),
/* PSBoundParameters */ typeof(Dictionary<string,object>),
/* MyInvocation */ typeof(InvocationInfo),
/* PSScriptRoot */ typeof(string),
/* PSCommandPath */ typeof(string),
/* ExecutionContext */ typeof(EngineIntrinsics),
/* Matches */ typeof(System.Collections.Hashtable),
/* PSVersionTable */ typeof(System.Collections.Hashtable),
/* OFS */ typeof(object)
};
internal const string DebugPreference = "DebugPreference";
internal const string VerbosePreference = "VerbosePreference";
internal const string ErrorActionPreference = "ErrorActionPreference";
internal const string WhatIfPreference = "WhatIfPreference";
internal const string WarningPreference = "WarningPreference";
internal const string ConfirmPreference = "ConfirmPreference";
internal const string ProgressPreference = "ProgressPreference";
internal const string InformationPreference = "InformationPreference";
internal static readonly string[] PreferenceVariables = new string[]
{
DebugPreference,
VerbosePreference,
ErrorActionPreference,
WhatIfPreference,
WarningPreference,
ConfirmPreference,
ProgressPreference,
InformationPreference
};
internal static readonly Type[] PreferenceVariableTypes = new Type[]
{
/* DebugPreference */ typeof(ActionPreference),
/* VerbosePreference */ typeof(ActionPreference),
/* ErrorPreference */ typeof(ActionPreference),
/* WhatIfPreference */ typeof(SwitchParameter),
/* WarningPreference */ typeof(ActionPreference),
/* ConfirmPreference */ typeof(ConfirmImpact),
/* ProgressPreference */ typeof(Enum),
/* InformationPreference */ typeof(ActionPreference),
};
internal enum AutomaticVariable
{
Underbar = 0,
Args = 1,
This = 2,
Input = 3,
PSCmdlet = 4,
PSBoundParameters = 5,
MyInvocation = 6,
PSScriptRoot = 7,
PSCommandPath = 8,
NumberOfAutomaticVariables // 1 + the last, used to initialize global scope.
}
internal enum PreferenceVariable
{
Debug = 9,
Verbose = 10,
Error = 11,
WhatIf = 12,
Warning = 13,
Confirm = 14,
}
internal const string Host = "Host";
internal const string HistorySize = "MaximumHistoryCount";
internal const string OutputEncoding = "OutputEncoding";
internal const string NestedPromptLevel = "NestedPromptLevel";
internal const string StackTrace = "StackTrace";
internal const string FirstToken = "^";
internal const string LastToken = "$";
internal const string PSItem = "PSItem"; // simple alias for $_
internal const string Error = "error";
internal const string EventError = "error";
internal const string PathExt = "env:PATHEXT";
internal const string PSEmailServer = "PSEmailServer";
internal const string PSDefaultParameterValues = "PSDefaultParameterValues";
internal const string PSModuleAutoLoadingPreference = "PSModuleAutoLoadingPreference";
internal const string pwd = "PWD";
internal const string Null = "null";
internal const string True = "true";
internal const string False = "false";
internal const string LastExitCode = "LastExitCode";
internal static readonly string[] OtherInitializedVariables = new string[]
{
Host,
HistorySize,
OutputEncoding,
NestedPromptLevel,
StackTrace,
FirstToken,
LastToken,
PSItem,
Error,
EventError,
PathExt,
PSEmailServer,
PSDefaultParameterValues,
PSModuleAutoLoadingPreference,
pwd,
Null,
True,
False,
LastExitCode
};
}
}