1 files changed, 109 insertions, 0 deletions
diff --git a/include/llvm/ADT/SmallString.h b/include/llvm/ADT/SmallString.h
new file mode 100644
index 0000000..687fa2d
--- /dev/null
+++ b/include/llvm/ADT/SmallString.h
@@ -0,0 +1,109 @@
+//===- llvm/ADT/SmallString.h - 'Normally small' strings --------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file defines the SmallString class.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_ADT_SMALLSTRING_H
+#define LLVM_ADT_SMALLSTRING_H
+
+#include "llvm/ADT/SmallVector.h"
+#include "llvm/Support/DataTypes.h"
+#include <cstring>
+
+namespace llvm {
+
+/// SmallString - A SmallString is just a SmallVector with methods and accessors
+/// that make it work better as a string (e.g. operator+ etc).
+template<unsigned InternalLen>
+class SmallString : public SmallVector<char, InternalLen> {
+public:
+  // Default ctor - Initialize to empty.
+  SmallString() {}
+
+  // Initialize with a range.
+  template<typename ItTy>
+  SmallString(ItTy S, ItTy E) : SmallVector<char, InternalLen>(S, E) {}
+
+  // Copy ctor.
+  SmallString(const SmallString &RHS) : SmallVector<char, InternalLen>(RHS) {}
+
+
+  // Extra methods.
+  const char *c_str() const {
+    SmallString *This = const_cast<SmallString*>(this);
+    // Ensure that there is a \0 at the end of the string.
+    This->reserve(this->size()+1);
+    This->End[0] = 0;
+    return this->begin();
+  }
+
+  // Extra operators.
+  const SmallString &operator=(const char *RHS) {
+    this->clear();
+    return *this += RHS;
+  }
+
+  SmallString &operator+=(const char *RHS) {
+    this->append(RHS, RHS+strlen(RHS));
+    return *this;
+  }
+  SmallString &operator+=(char C) {
+    this->push_back(C);
+    return *this;
+  }
+
+  SmallString &append_uint_32(uint32_t N) {
+    char Buffer[20];
+    char *BufPtr = Buffer+20;
+
+    if (N == 0) *--BufPtr = '0';  // Handle special case.
+
+    while (N) {
+      *--BufPtr = '0' + char(N % 10);
+      N /= 10;
+    }
+    this->append(BufPtr, Buffer+20);
+    return *this;
+  }
+
+  SmallString &append_uint(uint64_t N) {
+    if (N == uint32_t(N))
+      return append_uint_32(uint32_t(N));
+
+    char Buffer[40];
+    char *BufPtr = Buffer+40;
+
+    if (N == 0) *--BufPtr = '0';  // Handle special case...
+
+    while (N) {
+      *--BufPtr = '0' + char(N % 10);
+      N /= 10;
+    }
+
+    this->append(BufPtr, Buffer+40);
+    return *this;
+  }
+
+  SmallString &append_sint(int64_t N) {
+    // TODO, wrong for minint64.
+    if (N < 0) {
+      this->push_back('-');
+      N = -N;
+    }
+    return append_uint(N);
+  }
+
+};
+
+
+}
+
+#endif