-//===-- Support/StringExtras.h - Useful string functions ---------*- C++ -*--=//
+//===-- Support/StringExtras.h - Useful string functions --------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file was developed by the LLVM research group and is distributed under
+// the University of Illinois Open Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
//
// This file contains some functions that are useful when dealing with strings.
//
//===----------------------------------------------------------------------===//
-#ifndef SUPPORT_STRING_EXTRAS_H
-#define SUPPORT_STRING_EXTRAS_H
+#ifndef SUPPORT_STRINGEXTRAS_H
+#define SUPPORT_STRINGEXTRAS_H
#include "Support/DataTypes.h"
#include <string>
#include <stdio.h>
-static inline string utostr(uint64_t X, bool isNeg = false) {
+namespace llvm {
+
+static inline std::string utohexstr(uint64_t X) {
+ char Buffer[40];
+ char *BufPtr = Buffer+39;
+
+ *BufPtr = 0; // Null terminate buffer...
+ if (X == 0) *--BufPtr = '0'; // Handle special case...
+
+ while (X) {
+ unsigned Mod = X & 15;
+ if (Mod < 10)
+ *--BufPtr = '0' + Mod;
+ else
+ *--BufPtr = 'A' + Mod-10;
+ X >>= 4;
+ }
+ return std::string(BufPtr);
+}
+
+static inline std::string utostr(unsigned long long X, bool isNeg = false) {
char Buffer[40];
char *BufPtr = Buffer+39;
if (isNeg) *--BufPtr = '-'; // Add negative sign...
- return string(BufPtr);
+ return std::string(BufPtr);
}
-static inline string itostr(int64_t X) {
+static inline std::string itostr(int64_t X) {
if (X < 0)
- return utostr((uint64_t)-X, true);
+ return utostr(static_cast<uint64_t>(-X), true);
else
- return utostr((uint64_t)X);
+ return utostr(static_cast<uint64_t>(X));
}
-static inline string utostr(unsigned X, bool isNeg = false) {
+static inline std::string utostr(unsigned long X, bool isNeg = false) {
+ return utostr(static_cast<unsigned long long>(X), isNeg);
+}
+
+static inline std::string utostr(unsigned X, bool isNeg = false) {
char Buffer[20];
char *BufPtr = Buffer+19;
if (isNeg) *--BufPtr = '-'; // Add negative sign...
- return string(BufPtr);
+ return std::string(BufPtr);
}
-static inline string itostr(int X) {
+static inline std::string itostr(int X) {
if (X < 0)
- return utostr((unsigned)-X, true);
+ return utostr(static_cast<unsigned>(-X), true);
else
- return utostr((unsigned)X);
+ return utostr(static_cast<unsigned>(X));
}
-static inline string ftostr(double V) {
+static inline std::string ftostr(double V) {
char Buffer[200];
- snprintf(Buffer, 200, "%e", V);
+ snprintf(Buffer, 200, "%20.6e", V);
return Buffer;
}
+
+/// getToken - This function extracts one token from source, ignoring any
+/// leading characters that appear in the Delimiters string, and ending the
+/// token at any of the characters that appear in the Delimiters string. If
+/// there are no tokens in the source string, an empty string is returned.
+/// The Source source string is updated in place to remove the returned string
+/// and any delimiter prefix from it.
+std::string getToken(std::string &Source,
+ const char *Delimiters = " \t\n\v\f\r");
+
+} // End llvm namespace
+
#endif