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Move UnescapeString to a static function for its sole client; its inefficient and broken.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84358 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Daniel Dunbar 2009-10-17 20:43:42 +00:00
parent ca107c5c18
commit 9bd34602fb
3 changed files with 23 additions and 35 deletions
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5
include/llvm/ADT/StringExtras.h
View File

@ -217,11 +217,6 @@ void SplitString(const std::string &Source,
std::vector<std::string> &OutFragments,
const char *Delimiters = " \t\n\v\f\r");
/// UnescapeString - Modify the argument string, turning two character sequences
/// like '\\' 'n' into '\n'. This handles: \e \a \b \f \n \r \t \v \' \\ and
/// \num (where num is a 1-3 byte octal value).
void UnescapeString(std::string &Str);
/// HashString - Hash funtion for strings.
///
/// This is the Bernstein hash function.

30
lib/Support/StringExtras.cpp
View File

@ -56,33 +56,3 @@ void llvm::SplitString(const std::string &Source,
S2 = getToken(S, Delimiters);
}
}
/// UnescapeString - Modify the argument string, turning two character sequences
/// @verbatim
/// like '\\' 'n' into '\n'. This handles: \e \a \b \f \n \r \t \v \' \ and
/// \num (where num is a 1-3 byte octal value).
/// @endverbatim
void llvm::UnescapeString(std::string &Str) {
for (unsigned i = 0; i != Str.size(); ++i) {
if (Str[i] == '\\' && i != Str.size()-1) {
switch (Str[i+1]) {
default: continue; // Don't execute the code after the switch.
case 'a': Str[i] = '\a'; break;
case 'b': Str[i] = '\b'; break;
case 'e': Str[i] = 27; break;
case 'f': Str[i] = '\f'; break;
case 'n': Str[i] = '\n'; break;
case 'r': Str[i] = '\r'; break;
case 't': Str[i] = '\t'; break;
case 'v': Str[i] = '\v'; break;
case '"': Str[i] = '\"'; break;
case '\'': Str[i] = '\''; break;
case '\\': Str[i] = '\\'; break;
}
// Nuke the second character.
Str.erase(Str.begin()+i+1);
}
}
}

23
utils/TableGen/AsmWriterEmitter.cpp
View File

@ -538,6 +538,29 @@ FindUniqueOperandCommands(std::vector<std::string> &UniqueOperandCommands,
}
static void UnescapeString(std::string &Str) {
for (unsigned i = 0; i != Str.size(); ++i) {
if (Str[i] == '\\' && i != Str.size()-1) {
switch (Str[i+1]) {
default: continue; // Don't execute the code after the switch.
case 'a': Str[i] = '\a'; break;
case 'b': Str[i] = '\b'; break;
case 'e': Str[i] = 27; break;
case 'f': Str[i] = '\f'; break;
case 'n': Str[i] = '\n'; break;
case 'r': Str[i] = '\r'; break;
case 't': Str[i] = '\t'; break;
case 'v': Str[i] = '\v'; break;
case '"': Str[i] = '\"'; break;
case '\'': Str[i] = '\''; break;
case '\\': Str[i] = '\\'; break;
}
// Nuke the second character.
Str.erase(Str.begin()+i+1);
}
}
}
/// EmitPrintInstruction - Generate the code for the "printInstruction" method
/// implementation.
void AsmWriterEmitter::EmitPrintInstruction(raw_ostream &O) {