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PlaceCommasBeforeNextStatement should handle correctly formatted text (#247)

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- Fixed handling of PlaceCommasBeforeNextStatement so that it doesn't add whitespace unnecessarily. This ensures that repeated formats of the same text shouldn't keep adding whitespace
- Added tests covering a number of scenarios related to this
This commit is contained in:
Kevin Cunnane
2017-02-22 11:08:57 -08:00
committed by Raymond Martin
parent 7f20f84add
commit 0c0bd3125b
8 changed files with 168 additions and 59 deletions
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143
src/Microsoft.SqlTools.ServiceLayer/Formatter/Impl/CommaSeparatedListFormatter.cs
View File

@@ -52,43 +52,15 @@ namespace Microsoft.SqlTools.ServiceLayer.Formatter
int start = previousChild.Position.endTokenNumber;
int end = nextChild.Position.startTokenNumber;
bool foundNonWhitespaceTokenBeforeComma = false;
int commaToken = -1;
bool foundWhitespaceTokenBeforeComma;
int commaToken = FindCommaToken(start, end, out foundWhitespaceTokenBeforeComma);
for (int i = start; i < end && HasToken(i); i++)
{
TokenData td = GetTokenData(i);
if (td.TokenId == 44)
{
commaToken = i;
break;
}
else if (IsTokenWhitespace(td))
{
foundNonWhitespaceTokenBeforeComma = true;
}
}
Debug.Assert(commaToken > -1, "No comma separating the children.");
if (foundNonWhitespaceTokenBeforeComma)
if (foundWhitespaceTokenBeforeComma)
{
ProcessTokenRange(start, commaToken);
}
else
{
#if DEBUG
for (int i = start; i < commaToken && HasToken(i); i++)
{
TokenData td = GetTokenData(i);
if (!IsTokenWhitespace(td))
{
Debug.Fail("unexpected token type of " + td.TokenId);
}
}
#endif
// strip whitespace before comma
for (int i = start; i < commaToken; i++)
{
@@ -96,50 +68,105 @@ namespace Microsoft.SqlTools.ServiceLayer.Formatter
}
}
// include comma after each element?
if (!FormatOptions.PlaceCommasBeforeNextStatement)
if (FormatOptions.PlaceCommasBeforeNextStatement)
{
ProcessTokenRange(commaToken, commaToken + 1);
ProcessCommaListWithCommaMove(commaToken, end, foundWhitespaceTokenBeforeComma);
}
else
{
TokenData token = GetTokenData(commaToken);
AddReplacement(new Replacement(token.StartIndex, ",", ""));
ProcessCommaList(commaToken, end);
}
}
private void ProcessCommaListWithCommaMove(int commaToken, int end, bool foundWhitespaceTokenBeforeComma)
{
// Strip comma from current position
TokenData token = GetTokenData(commaToken);
AddReplacement(token.StartIndex, ",", string.Empty);
// Process text between comma and next token
// special case if there is no white space between comma token and end of region
if (commaToken + 1 == end)
{
string newValue = PlaceEachElementOnNewLine ? Environment.NewLine + GetIndentString() : " ";
AddReplacement(new Replacement(
GetTokenData(end).StartIndex,
string.Empty,
newValue
));
// Only handle this case if there is no whitespace before the comma. Otherwise can
// ignore as we'll process & squash whitespace
if (!foundWhitespaceTokenBeforeComma)
{
AddNewlineOrSpace(end);
}
}
else
{
NormalizeWhitespace f = FormatterUtilities.NormalizeNewLinesOrCondenseToOneSpace;
if (PlaceEachElementOnNewLine)
{
f = FormatterUtilities.NormalizeNewLinesEnsureOneNewLineMinimum;
}
for (int i = commaToken + 1; i < end; i++)
{
SimpleProcessToken(i, f);
}
ProcessWhitespaceInRange(commaToken, end);
}
// do we need to place the comma before the next statement in the list?
if (FormatOptions.PlaceCommasBeforeNextStatement)
// Add the comma just before the next token
SimpleProcessToken(commaToken, FormatterUtilities.NormalizeNewLinesInWhitespace);
TokenData tok = GetTokenData(end);
AddReplacement(tok.StartIndex, string.Empty, ",");
}
private void ProcessCommaList(int commaToken, int end)
{
ProcessTokenRange(commaToken, commaToken + 1);
// special case if there is no white space between comma token and end of region
if (commaToken + 1 == end)
{
SimpleProcessToken(commaToken, FormatterUtilities.NormalizeNewLinesInWhitespace);
TokenData tok = GetTokenData(end);
AddReplacement(new Replacement(tok.StartIndex, "", ","));
AddNewlineOrSpace(end);
}
else
{
ProcessWhitespaceInRange(commaToken, end);
}
}
}
private void ProcessWhitespaceInRange(int commaToken, int end)
{
NormalizeWhitespace f = FormatterUtilities.NormalizeNewLinesOrCondenseToOneSpace;
if (PlaceEachElementOnNewLine)
{
f = FormatterUtilities.NormalizeNewLinesEnsureOneNewLineMinimum;
}
for (int i = commaToken + 1; i <= end; i++)
{
SimpleProcessToken(i, f);
}
}
private void AddNewlineOrSpace(int end)
{
string newValue = PlaceEachElementOnNewLine ? Environment.NewLine + GetIndentString() : " ";
AddReplacement(
GetTokenData(end).StartIndex,
string.Empty,
newValue);
}
private int FindCommaToken(int start, int end, out bool foundWhitespaceTokenBeforeComma)
{
foundWhitespaceTokenBeforeComma = false;
int commaToken = -1;
for (int i = start; i < end && HasToken(i); i++)
{
TokenData td = GetTokenData(i);
if (td.TokenId == FormatterTokens.TOKEN_COMMA)
{
commaToken = i;
break;
}
else if (IsTokenWhitespace(td))
{
foundWhitespaceTokenBeforeComma = true;
}
}
Debug.Assert(commaToken > -1, "No comma separating the children.");
return commaToken;
}
}
}

1
src/Microsoft.SqlTools.ServiceLayer/Formatter/Impl/FormatterTokens.cs
View File

@@ -22,6 +22,7 @@ namespace Microsoft.SqlTools.ServiceLayer.Formatter
return (int)converter.ConvertFromString(tokenName);
}
public static readonly int TOKEN_COMMA = 44; // not included in Tokens enum for some reason
public static readonly int TOKEN_FOR = ResolveTokenId("TOKEN_FOR");
public static readonly int TOKEN_REPLICATION = ResolveTokenId("TOKEN_REPLICATION");
public static readonly int TOKEN_ID = ResolveTokenId("TOKEN_ID");

2
src/Microsoft.SqlTools.ServiceLayer/Formatter/Impl/FormatterVisitor.cs
View File

@@ -70,7 +70,7 @@ namespace Microsoft.SqlTools.ServiceLayer.Formatter
internal static bool IsTokenWhitespaceOrComma(SqlScript script, int tokenIndex)
{
int tokenId = script.TokenManager.TokenList[tokenIndex].TokenId;
return script.TokenManager.IsTokenWhitespace(tokenId) || (tokenId == 44);
return script.TokenManager.IsTokenWhitespace(tokenId) || (tokenId == FormatterTokens.TOKEN_COMMA);
}
internal static bool IsTokenWhitespaceOrComment(SqlScript script, int tokenIndex)