/// <summary>
/// Gets completions for a statement contained in the given
/// script file at the specified line and column position.
/// </summary>
/// <param name="scriptFile">
/// The script file in which completions will be gathered.
/// </param>
/// <param name="lineNumber">
/// The 1-based line number at which completions will be gathered.
/// </param>
/// <param name="columnNumber">
/// The 1-based column number at which completions will be gathered.
/// </param>
/// <returns>
/// A CommandCompletion instance completions for the identified statement.
/// </returns>
public async Task <CompletionResults> GetCompletionsInFile(
ScriptFile scriptFile,
int lineNumber,
int columnNumber)
{
Validate.IsNotNull("scriptFile", scriptFile);
// Get the offset at the specified position. This method
// will also validate the given position.
int fileOffset =
scriptFile.GetOffsetAtPosition(
lineNumber,
columnNumber);
RunspaceHandle runspaceHandle =
await this.powerShellContext.GetRunspaceHandle(
new CancellationTokenSource(DefaultWaitTimeoutMilliseconds).Token);
CommandCompletion commandCompletion =
AstOperations.GetCompletions(
scriptFile.ScriptAst,
scriptFile.ScriptTokens,
fileOffset,
runspaceHandle.Runspace);
runspaceHandle.Dispose();
if (commandCompletion != null)
{
try
{
CompletionResults completionResults =
CompletionResults.Create(
scriptFile,
commandCompletion);
// save state of most recent completion
mostRecentCompletions = completionResults;
mostRecentRequestFile = scriptFile.Id;
mostRecentRequestLine = lineNumber;
mostRecentRequestOffest = columnNumber;
return(completionResults);
}
catch (ArgumentException e)
{
// Bad completion results could return an invalid
// replacement range, catch that here
Logger.Write(
LogLevel.Error,
$"Caught exception while trying to create CompletionResults:\n\n{e.ToString()}");
}
}
// If all else fails, return empty results
return(new CompletionResults());
}
/// <summary>
/// Gets completions for a statement contained in the given
/// script file at the specified line and column position.
/// </summary>
/// <param name="scriptFile">
/// The script file in which completions will be gathered.
/// </param>
/// <param name="lineNumber">
/// The 1-based line number at which completions will be gathered.
/// </param>
/// <param name="columnNumber">
/// The 1-based column number at which completions will be gathered.
/// </param>
/// <returns>
/// A CommandCompletion instance completions for the identified statement.
/// </returns>
public async Task <CompletionResults> GetCompletionsInFileAsync(
ScriptFile scriptFile,
int lineNumber,
int columnNumber)
{
Validate.IsNotNull(nameof(scriptFile), scriptFile);
// Get the offset at the specified position. This method
// will also validate the given position.
int fileOffset =
scriptFile.GetOffsetAtPosition(
lineNumber,
columnNumber);
CommandCompletion commandCompletion =
await AstOperations.GetCompletionsAsync(
scriptFile.ScriptAst,
scriptFile.ScriptTokens,
fileOffset,
_powerShellContext,
_logger,
new CancellationTokenSource(DefaultWaitTimeoutMilliseconds).Token);
if (commandCompletion == null)
{
return(new CompletionResults());
}
try
{
CompletionResults completionResults =
CompletionResults.Create(
scriptFile,
commandCompletion);
// save state of most recent completion
_mostRecentCompletions = completionResults;
_mostRecentRequestFile = scriptFile.Id;
_mostRecentRequestLine = lineNumber;
_mostRecentRequestOffest = columnNumber;
return(completionResults);
}
catch (ArgumentException e)
{
// Bad completion results could return an invalid
// replacement range, catch that here
_logger.Write(
LogLevel.Error,
$"Caught exception while trying to create CompletionResults:\n\n{e.ToString()}");
return(new CompletionResults());
}
}
/// <summary>
/// Gets completions for a statement contained in the given
/// script file at the specified line and column position.
/// </summary>
/// <param name="scriptFile">
/// The script file in which completions will be gathered.
/// </param>
/// <param name="lineNumber">
/// The 1-based line number at which completions will be gathered.
/// </param>
/// <param name="columnNumber">
/// The 1-based column number at which completions will be gathered.
/// </param>
/// <returns>
/// A CommandCompletion instance completions for the identified statement.
/// </returns>
public async Task <CompletionResults> GetCompletionsInFile(
ScriptFile scriptFile,
int lineNumber,
int columnNumber)
{
Validate.IsNotNull("scriptFile", scriptFile);
// Get the offset at the specified position. This method
// will also validate the given position.
int fileOffset =
scriptFile.GetOffsetAtPosition(
lineNumber,
columnNumber);
RunspaceHandle runspaceHandle =
await this.powerShellContext.GetRunspaceHandle(
new CancellationTokenSource(DefaultWaitTimeoutMilliseconds).Token);
CommandCompletion commandCompletion =
AstOperations.GetCompletions(
scriptFile.ScriptAst,
scriptFile.ScriptTokens,
fileOffset,
runspaceHandle.Runspace);
runspaceHandle.Dispose();
if (commandCompletion != null)
{
CompletionResults completionResults =
CompletionResults.Create(
scriptFile,
commandCompletion);
// save state of most recent completion
mostRecentCompletions = completionResults;
mostRecentRequestFile = scriptFile.Id;
mostRecentRequestLine = lineNumber;
mostRecentRequestOffest = columnNumber;
return(completionResults);
}
else
{
return(new CompletionResults());
}
}
/// <summary>
/// Gets completions for the symbol found in the Ast at
/// the given file offset.
/// </summary>
/// <param name="scriptAst">
/// The Ast which will be traversed to find a completable symbol.
/// </param>
/// <param name="currentTokens">
/// The array of tokens corresponding to the scriptAst parameter.
/// </param>
/// <param name="fileOffset">
/// The 1-based file offset at which a symbol will be located.
/// </param>
/// <param name="runspace">
/// The Runspace to use for gathering completions.
/// </param>
/// <returns>
/// A CommandCompletion instance that contains completions for the
/// symbol at the given offset.
/// </returns>
static public CompletionResults GetCompletions(
Ast scriptAst,
Token[] currentTokens,
int fileOffset,
Runspace runspace)
{
var type = scriptAst.Extent.StartScriptPosition.GetType();
var method =
type.GetMethod(
"CloneWithNewOffset",
BindingFlags.Instance | BindingFlags.NonPublic,
null,
new[] { typeof(int) }, null);
IScriptPosition cursorPosition =
(IScriptPosition)method.Invoke(
scriptAst.Extent.StartScriptPosition,
new object[] { fileOffset });
CommandCompletion commandCompletion = null;
if (runspace.RunspaceAvailability == RunspaceAvailability.Available)
{
using (System.Management.Automation.PowerShell powerShell =
System.Management.Automation.PowerShell.Create())
{
powerShell.Runspace = runspace;
commandCompletion =
CommandCompletion.CompleteInput(
scriptAst,
currentTokens,
cursorPosition,
null,
powerShell);
}
}
return(CompletionResults.Create(commandCompletion));
}