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daviwildaviwil
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Restore support for PowerShell v3 and v4
This change resolves some compatibility issues with PowerShell v3 and v4. The new PowerShellEditorServices.psm1 file was using the ::new() constructor syntax that is only available in PowerShell v5 and higher. Also, the AstVisitor2 class was causing issues with Add-Type when being loaded into the older versions of PowerShell. Issue #276 tracks the need for bringing AstVisitor2 usage back after a more appropriate multi-version support strategy is designed. Related to PowerShell/vscode-powershell#248
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‎module/PowerShellEditorServices/PowerShellEditorServices.psm1

+4-4
Original file line numberDiff line numberDiff line change
@@ -50,17 +50,17 @@ function Start-EditorServicesHost {
5050
)
5151

5252
$editorServicesHost = $null
53-
$hostDetails = [Microsoft.PowerShell.EditorServices.Session.HostDetails]::new($HostName, $HostProfileId, [System.Version]::new($HostVersion))
53+
$hostDetails = New-Object Microsoft.PowerShell.EditorServices.Session.HostDetails @($HostName, $HostProfileId, (New-Object System.Version @($HostVersion)))
5454

5555
try {
5656
$editorServicesHost =
57-
[Microsoft.PowerShell.EditorServices.Host.EditorServicesHost]::new(
57+
New-Object Microsoft.PowerShell.EditorServices.Host.EditorServicesHost @(
5858
$hostDetails,
5959
$BundledModulesPath,
60-
$WaitForDebugger.IsPresent);
60+
$WaitForDebugger.IsPresent)
6161

6262
# Build the profile paths using the root paths of the current $profile variable
63-
$profilePaths = [Microsoft.PowerShell.EditorServices.Session.ProfilePaths]::new(
63+
$profilePaths = New-Object Microsoft.PowerShell.EditorServices.Session.ProfilePaths @(
6464
$hostDetails.ProfileId,
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[System.IO.Path]::GetDirectoryName($profile.AllUsersAllHosts),
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[System.IO.Path]::GetDirectoryName($profile.CurrentUserAllHosts));

‎src/PowerShellEditorServices/Language/AstOperations.cs

+11-9
Original file line numberDiff line numberDiff line change
@@ -197,15 +197,17 @@ static public IEnumerable<SymbolReference> FindSymbolsInDocument(Ast scriptAst,
197197
{
198198
IEnumerable<SymbolReference> symbolReferences = null;
199199

200-
if (powerShellVersion >= new Version(5,0))
201-
{
202-
#if PowerShellv5
203-
FindSymbolsVisitor2 findSymbolsVisitor = new FindSymbolsVisitor2();
204-
scriptAst.Visit(findSymbolsVisitor);
205-
symbolReferences = findSymbolsVisitor.SymbolReferences;
206-
#endif
207-
}
208-
else
200+
// TODO: Restore this when we figure out how to support multiple
201+
// PS versions in the new PSES-as-a-module world (issue #276)
202+
// if (powerShellVersion >= new Version(5,0))
203+
// {
204+
//#if PowerShellv5
205+
// FindSymbolsVisitor2 findSymbolsVisitor = new FindSymbolsVisitor2();
206+
// scriptAst.Visit(findSymbolsVisitor);
207+
// symbolReferences = findSymbolsVisitor.SymbolReferences;
208+
//#endif
209+
// }
210+
// else
209211
{
210212
FindSymbolsVisitor findSymbolsVisitor = new FindSymbolsVisitor();
211213
scriptAst.Visit(findSymbolsVisitor);

‎src/PowerShellEditorServices/Language/FindSymbolsVisitor2.cs

+62-57
Original file line numberDiff line numberDiff line change
@@ -9,70 +9,75 @@
99
namespace Microsoft.PowerShell.EditorServices
1010
{
1111
#if PowerShellv5
12-
/// <summary>
13-
/// The visitor used to find all the symbols (function and class defs) in the AST.
14-
/// </summary>
15-
/// <remarks>
16-
/// Requires PowerShell v5 or higher
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/// </remarks>
18-
internal class FindSymbolsVisitor2 : AstVisitor2
19-
{
20-
private FindSymbolsVisitor findSymbolsVisitor;
2112

22-
public List<SymbolReference> SymbolReferences
23-
{
24-
get
25-
{
26-
return this.findSymbolsVisitor.SymbolReferences;
27-
}
28-
}
13+
// TODO: Restore this when we figure out how to support multiple
14+
// PS versions in the new PSES-as-a-module world (issue #276)
2915

30-
public FindSymbolsVisitor2()
31-
{
32-
this.findSymbolsVisitor = new FindSymbolsVisitor();
33-
}
16+
///// <summary>
17+
///// The visitor used to find all the symbols (function and class defs) in the AST.
18+
///// </summary>
19+
///// <remarks>
20+
///// Requires PowerShell v5 or higher
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///// </remarks>
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/////
23+
//internal class FindSymbolsVisitor2 : AstVisitor2
24+
//{
25+
// private FindSymbolsVisitor findSymbolsVisitor;
3426

35-
/// <summary>
36-
/// Adds each function defintion as a
37-
/// </summary>
38-
/// <param name="functionDefinitionAst">A functionDefinitionAst object in the script's AST</param>
39-
/// <returns>A decision to stop searching if the right symbol was found,
40-
/// or a decision to continue if it wasn't found</returns>
41-
public override AstVisitAction VisitFunctionDefinition(FunctionDefinitionAst functionDefinitionAst)
42-
{
43-
return this.findSymbolsVisitor.VisitFunctionDefinition(functionDefinitionAst);
44-
}
27+
// public List<SymbolReference> SymbolReferences
28+
// {
29+
// get
30+
// {
31+
// return this.findSymbolsVisitor.SymbolReferences;
32+
// }
33+
// }
4534

46-
/// <summary>
47-
/// Checks to see if this variable expression is the symbol we are looking for.
48-
/// </summary>
49-
/// <param name="variableExpressionAst">A VariableExpressionAst object in the script's AST</param>
50-
/// <returns>A descion to stop searching if the right symbol was found,
51-
/// or a decision to continue if it wasn't found</returns>
52-
public override AstVisitAction VisitVariableExpression(VariableExpressionAst variableExpressionAst)
53-
{
54-
return this.findSymbolsVisitor.VisitVariableExpression(variableExpressionAst);
55-
}
35+
// public FindSymbolsVisitor2()
36+
// {
37+
// this.findSymbolsVisitor = new FindSymbolsVisitor();
38+
// }
5639

57-
public override AstVisitAction VisitConfigurationDefinition(ConfigurationDefinitionAst configurationDefinitionAst)
58-
{
59-
IScriptExtent nameExtent = new ScriptExtent()
60-
{
61-
Text = configurationDefinitionAst.InstanceName.Extent.Text,
62-
StartLineNumber = configurationDefinitionAst.Extent.StartLineNumber,
63-
EndLineNumber = configurationDefinitionAst.Extent.EndLineNumber,
64-
StartColumnNumber = configurationDefinitionAst.Extent.StartColumnNumber,
65-
EndColumnNumber = configurationDefinitionAst.Extent.EndColumnNumber
66-
};
40+
// /// <summary>
41+
// /// Adds each function defintion as a
42+
// /// </summary>
43+
// /// <param name="functionDefinitionAst">A functionDefinitionAst object in the script's AST</param>
44+
// /// <returns>A decision to stop searching if the right symbol was found,
45+
// /// or a decision to continue if it wasn't found</returns>
46+
// public override AstVisitAction VisitFunctionDefinition(FunctionDefinitionAst functionDefinitionAst)
47+
// {
48+
// return this.findSymbolsVisitor.VisitFunctionDefinition(functionDefinitionAst);
49+
// }
6750

68-
this.findSymbolsVisitor.SymbolReferences.Add(
69-
new SymbolReference(
70-
SymbolType.Configuration,
71-
nameExtent));
51+
// /// <summary>
52+
// /// Checks to see if this variable expression is the symbol we are looking for.
53+
// /// </summary>
54+
// /// <param name="variableExpressionAst">A VariableExpressionAst object in the script's AST</param>
55+
// /// <returns>A descion to stop searching if the right symbol was found,
56+
// /// or a decision to continue if it wasn't found</returns>
57+
// public override AstVisitAction VisitVariableExpression(VariableExpressionAst variableExpressionAst)
58+
// {
59+
// return this.findSymbolsVisitor.VisitVariableExpression(variableExpressionAst);
60+
// }
7261

73-
return AstVisitAction.Continue;
74-
}
75-
}
62+
// public override AstVisitAction VisitConfigurationDefinition(ConfigurationDefinitionAst configurationDefinitionAst)
63+
// {
64+
// IScriptExtent nameExtent = new ScriptExtent()
65+
// {
66+
// Text = configurationDefinitionAst.InstanceName.Extent.Text,
67+
// StartLineNumber = configurationDefinitionAst.Extent.StartLineNumber,
68+
// EndLineNumber = configurationDefinitionAst.Extent.EndLineNumber,
69+
// StartColumnNumber = configurationDefinitionAst.Extent.StartColumnNumber,
70+
// EndColumnNumber = configurationDefinitionAst.Extent.EndColumnNumber
71+
// };
72+
73+
// this.findSymbolsVisitor.SymbolReferences.Add(
74+
// new SymbolReference(
75+
// SymbolType.Configuration,
76+
// nameExtent));
77+
78+
// return AstVisitAction.Continue;
79+
// }
80+
//}
7681
#endif
7782
}
7883

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