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[Format] Skip creating temporary std::strings when filling another string. 

No functional change intended.

llvm-svn: 238466
This commit is contained in:
Benjamin Kramer 2015-05-28 19:55:49 +00:00
parent b32552faf6
commit ddf1cda2c2
1 changed files with 6 additions and 6 deletions
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12
clang/lib/Format/WhitespaceManager.cpp
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@ -402,7 +402,7 @@ void WhitespaceManager::appendNewlineText(std::string &Text, unsigned Newlines,
unsigned Offset = unsigned Offset =
std::min<int>(EscapedNewlineColumn - 1, PreviousEndOfTokenColumn); std::min<int>(EscapedNewlineColumn - 1, PreviousEndOfTokenColumn);
for (unsigned i = 0; i < Newlines; ++i) { for (unsigned i = 0; i < Newlines; ++i) {
Text.append(std::string(EscapedNewlineColumn - Offset - 1, ' ')); Text.append(EscapedNewlineColumn - Offset - 1, ' ');
Text.append(UseCRLF ? "\\\r\n" : "\\\n"); Text.append(UseCRLF ? "\\\r\n" : "\\\n");
Offset = 0; Offset = 0;
} }
@ -414,7 +414,7 @@ void WhitespaceManager::appendIndentText(std::string &Text,
unsigned WhitespaceStartColumn) { unsigned WhitespaceStartColumn) {
switch (Style.UseTab) { switch (Style.UseTab) {
case FormatStyle::UT_Never: case FormatStyle::UT_Never:
Text.append(std::string(Spaces, ' ')); Text.append(Spaces, ' ');
break; break;
case FormatStyle::UT_Always: { case FormatStyle::UT_Always: {
unsigned FirstTabWidth = unsigned FirstTabWidth =
@ -424,8 +424,8 @@ void WhitespaceManager::appendIndentText(std::string &Text,
Spaces -= FirstTabWidth; Spaces -= FirstTabWidth;
Text.append("\t"); Text.append("\t");
} }
Text.append(std::string(Spaces / Style.TabWidth, '\t')); Text.append(Spaces / Style.TabWidth, '\t');
Text.append(std::string(Spaces % Style.TabWidth, ' ')); Text.append(Spaces % Style.TabWidth, ' ');
break; break;
} }
case FormatStyle::UT_ForIndentation: case FormatStyle::UT_ForIndentation:
@ -436,10 +436,10 @@ void WhitespaceManager::appendIndentText(std::string &Text,
if (Indentation > Spaces) if (Indentation > Spaces)
Indentation = Spaces; Indentation = Spaces;
unsigned Tabs = Indentation / Style.TabWidth; unsigned Tabs = Indentation / Style.TabWidth;
Text.append(std::string(Tabs, '\t')); Text.append(Tabs, '\t');
Spaces -= Tabs * Style.TabWidth; Spaces -= Tabs * Style.TabWidth;
} }
Text.append(std::string(Spaces, ' ')); Text.append(Spaces, ' ');
break; break;
} }
} }