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Fixed null ref exception in GetSignatureHelp (#175)

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- Fixed a few places where ScriptParseInfo was being used before it was verified to be non-null
- Added 1 basic test for GetSignatureHelp scenario
This commit is contained in:
Connor Quagliana
2016-12-09 15:18:08 -08:00
committed by Kevin Cunnane
parent 431dfa4156
commit 40c1434745
3 changed files with 62 additions and 7 deletions
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23
src/Microsoft.SqlTools.ServiceLayer/LanguageServices/ScriptDocumentInfo.cs
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@@ -18,6 +18,16 @@ namespace Microsoft.SqlTools.ServiceLayer.LanguageServices.Completion
/// Create new instance
/// </summary>
public ScriptDocumentInfo(TextDocumentPosition textDocumentPosition, ScriptFile scriptFile, ScriptParseInfo scriptParseInfo)
: this(textDocumentPosition, scriptFile)
{
Validate.IsNotNull(nameof(scriptParseInfo), scriptParseInfo);
ScriptParseInfo = scriptParseInfo;
// need to adjust line & column for base-1 parser indices
Token = GetToken(scriptParseInfo, ParserLine, ParserColumn);
}
private ScriptDocumentInfo(TextDocumentPosition textDocumentPosition, ScriptFile scriptFile)
{
StartLine = textDocumentPosition.Position.Line;
ParserLine = textDocumentPosition.Position.Line + 1;
@@ -30,11 +40,18 @@ namespace Microsoft.SqlTools.ServiceLayer.LanguageServices.Completion
textDocumentPosition.Position.Line,
textDocumentPosition.Position.Character);
ParserColumn = textDocumentPosition.Position.Character + 1;
ScriptParseInfo = scriptParseInfo;
Contents = scriptFile.Contents;
}
// need to adjust line & column for base-1 parser indices
Token = GetToken(scriptParseInfo, ParserLine, ParserColumn);
/// <summary>
/// Creates a new <see cref="ScriptDocumentInfo"/> with no backing <see cref="ScriptParseInfo"/> defined
/// </summary>
/// <param name="textDocumentPosition">A <see cref="TextDocumentPosition"/></param>
/// <param name="scriptFile">A <see cref="ScriptFile"/> to process</param>
/// <returns></returns>
public static ScriptDocumentInfo CreateDefaultDocumentInfo(TextDocumentPosition textDocumentPosition, ScriptFile scriptFile)
{
return new ScriptDocumentInfo(textDocumentPosition, scriptFile);
}
/// <summary>