[Support] Add support for "advanced" number formatting.

raw_ostream has not afforded a lot of flexibility in terms of
how to format numbers when outputting.  Wrap this all up into
a set of low level helper functions that can be used to output
numbers with arbitrary precision, alignment, format, etc and
then update raw_ostream to use these functions.

This will be useful for upcoming improvements to llvm's string
formatting libraries, but are still useful independently.

Differential Revision: https://reviews.llvm.org/D25497

llvm-svn: 284425

1 files changed, 19 insertions, 9 deletions

diff --git a/llvm/lib/Support/raw_ostream.cpp b/llvm/lib/Support/raw_ostream.cpp
index 8101bc1..b040e0a 100644
--- a/llvm/lib/Support/raw_ostream.cpp
+++ b/llvm/lib/Support/raw_ostream.cpp
@@ -114,27 +114,27 @@ void raw_ostream::SetBufferAndMode(char *BufferStart, size_t Size,
 }
 
 raw_ostream &raw_ostream::operator<<(unsigned long N) {
-  write_ulong(*this, N, 0);
+  write_ulong(*this, N, IntegerStyle::Integer);
   return *this;
 }
 
 raw_ostream &raw_ostream::operator<<(long N) {
-  write_long(*this, N, 0);
+  write_long(*this, N, IntegerStyle::Integer);
   return *this;
 }
 
 raw_ostream &raw_ostream::operator<<(unsigned long long N) {
-  write_ulonglong(*this, N, 0);
+  write_ulonglong(*this, N, IntegerStyle::Integer);
   return *this;
 }
 
 raw_ostream &raw_ostream::operator<<(long long N) {
-  write_longlong(*this, N, 0);
+  write_longlong(*this, N, IntegerStyle::Integer);
   return *this;
 }
 
 raw_ostream &raw_ostream::write_hex(unsigned long long N) {
-  llvm::write_hex(*this, N, 0, false, false);
+  llvm::write_hex(*this, N, HexStyle::Lower);
   return *this;
 }
 
@@ -179,12 +179,12 @@ raw_ostream &raw_ostream::write_escaped(StringRef Str,
 }
 
 raw_ostream &raw_ostream::operator<<(const void *P) {
-  llvm::write_hex(*this, (uintptr_t)P, 0, false, true);
+  llvm::write_hex(*this, (uintptr_t)P, HexStyle::PrefixLower);
   return *this;
 }
 
 raw_ostream &raw_ostream::operator<<(double N) {
-  llvm::write_double(*this, N, 0, 0, FloatStyle::Exponent);
+  llvm::write_double(*this, N, FloatStyle::Exponent);
   return *this;
 }
 
@@ -331,9 +331,19 @@ raw_ostream &raw_ostream::operator<<(const FormattedString &FS) {
 
 raw_ostream &raw_ostream::operator<<(const FormattedNumber &FN) {
   if (FN.Hex) {
-    llvm::write_hex(*this, FN.HexValue, FN.Width, FN.Upper, FN.HexPrefix);
+    HexStyle Style;
+    if (FN.Upper && FN.HexPrefix)
+      Style = HexStyle::PrefixUpper;
+    else if (FN.Upper && !FN.HexPrefix)
+      Style = HexStyle::Upper;
+    else if (!FN.Upper && FN.HexPrefix)
+      Style = HexStyle::PrefixLower;
+    else
+      Style = HexStyle::Lower;
+    llvm::write_hex(*this, FN.HexValue, Style, FN.Width, None);
   } else {
-    llvm::write_longlong(*this, FN.DecValue, FN.Width);
+    llvm::write_longlong(*this, FN.DecValue, IntegerStyle::Integer, None,
+                         FN.Width);
   }
   return *this;
 }