Reflow paragraphs in comments.

This is intended as a clean up after the big clang-format commit
(r280751), which unfortunately resulted in many of the comment
paragraphs in LLDB being very hard to read.

FYI, the script I used was:

import textwrap
import commands
import os
import sys
import re
tmp = "%s.tmp"%sys.argv[1]
out = open(tmp, "w+")
with open(sys.argv[1], "r") as f:
  header = ""
  text = ""
  comment = re.compile(r'^( *//) ([^ ].*)$')
  special = re.compile(r'^((([A-Z]+[: ])|([0-9]+ )).*)|(.*;)$')
  for line in f:
      match = comment.match(line)
      if match and not special.match(match.group(2)):
          # skip intentionally short comments.
          if not text and len(match.group(2)) < 40:
              out.write(line)
              continue

          if text:
              text += " " + match.group(2)
          else:
              header = match.group(1)
              text = match.group(2)

          continue

      if text:
          filled = textwrap.wrap(text, width=(78-len(header)),
                                 break_long_words=False)
          for l in filled:
              out.write(header+" "+l+'\n')
              text = ""

      out.write(line)

os.rename(tmp, sys.argv[1])

Differential Revision: https://reviews.llvm.org/D46144

llvm-svn: 331197
diff --git a/lldb/source/DataFormatters/FormatManager.cpp b/lldb/source/DataFormatters/FormatManager.cpp
index 7619b6f..bafee17 100644
--- a/lldb/source/DataFormatters/FormatManager.cpp
+++ b/lldb/source/DataFormatters/FormatManager.cpp
@@ -494,8 +494,8 @@
   if (valobj.GetNumChildren() == 0)
     return false;
 
-  // ask the type if it has any opinion about this
-  // eLazyBoolCalculate == no opinion; other values should be self explanatory
+  // ask the type if it has any opinion about this eLazyBoolCalculate == no
+  // opinion; other values should be self explanatory
   CompilerType compiler_type(valobj.GetCompilerType());
   if (compiler_type.IsValid()) {
     switch (compiler_type.ShouldPrintAsOneLiner(&valobj)) {
@@ -532,8 +532,7 @@
     }
 
     // if we decided to define synthetic children for a type, we probably care
-    // enough
-    // to show them, but avoid nesting children in children
+    // enough to show them, but avoid nesting children in children
     if (child_sp->GetSyntheticChildren().get() != nullptr) {
       ValueObjectSP synth_sp(child_sp->GetSyntheticValue());
       // wait.. wat? just get out of here..
diff --git a/lldb/source/DataFormatters/StringPrinter.cpp b/lldb/source/DataFormatters/StringPrinter.cpp
index 84143a5..89d7a95 100644
--- a/lldb/source/DataFormatters/StringPrinter.cpp
+++ b/lldb/source/DataFormatters/StringPrinter.cpp
@@ -26,9 +26,8 @@
 using namespace lldb_private;
 using namespace lldb_private::formatters;
 
-// we define this for all values of type but only implement it for those we care
-// about
-// that's good because we get linker errors for any unsupported type
+// we define this for all values of type but only implement it for those we
+// care about that's good because we get linker errors for any unsupported type
 template <lldb_private::formatters::StringPrinter::StringElementType type>
 static StringPrinter::StringPrinterBufferPointer<>
 GetPrintableImpl(uint8_t *buffer, uint8_t *buffer_end, uint8_t *&next);
@@ -163,8 +162,8 @@
         (unsigned char)*(buffer + 2), (unsigned char)*(buffer + 3));
     break;
   default:
-    // this is probably some bogus non-character thing
-    // just print it as-is and hope to sync up again soon
+    // this is probably some bogus non-character thing just print it as-is and
+    // hope to sync up again soon
     retval = {buffer, 1};
     next = buffer + 1;
     return retval;
@@ -223,9 +222,9 @@
   return retval;
 }
 
-// Given a sequence of bytes, this function returns:
-// a sequence of bytes to actually print out + a length
-// the following unscanned position of the buffer is in next
+// Given a sequence of bytes, this function returns: a sequence of bytes to
+// actually print out + a length the following unscanned position of the buffer
+// is in next
 static StringPrinter::StringPrinterBufferPointer<>
 GetPrintable(StringPrinter::StringElementType type, uint8_t *buffer,
              uint8_t *buffer_end, uint8_t *&next) {
@@ -321,8 +320,7 @@
           (llvm::UTF8 *)utf8_data_buffer_sp->GetBytes();
     } else {
       // just copy the pointers - the cast is necessary to make the compiler
-      // happy
-      // but this should only happen if we are reading UTF8 data
+      // happy but this should only happen if we are reading UTF8 data
       utf8_data_ptr = const_cast<llvm::UTF8 *>(
           reinterpret_cast<const llvm::UTF8 *>(data_ptr));
       utf8_data_end_ptr = const_cast<llvm::UTF8 *>(
@@ -344,8 +342,8 @@
     }
 
     // since we tend to accept partial data (and even partially malformed data)
-    // we might end up with no NULL terminator before the end_ptr
-    // hence we need to take a slower route and ensure we stay within boundaries
+    // we might end up with no NULL terminator before the end_ptr hence we need
+    // to take a slower route and ensure we stay within boundaries
     for (; utf8_data_ptr < utf8_data_end_ptr;) {
       if (zero_is_terminator && !*utf8_data_ptr)
         break;
@@ -472,8 +470,8 @@
   }
 
   // since we tend to accept partial data (and even partially malformed data)
-  // we might end up with no NULL terminator before the end_ptr
-  // hence we need to take a slower route and ensure we stay within boundaries
+  // we might end up with no NULL terminator before the end_ptr hence we need
+  // to take a slower route and ensure we stay within boundaries
   for (uint8_t *data = buffer_sp->GetBytes(); *data && (data < data_end);) {
     if (escape_non_printables) {
       uint8_t *next_data = nullptr;
diff --git a/lldb/source/DataFormatters/TypeFormat.cpp b/lldb/source/DataFormatters/TypeFormat.cpp
index 333fe91..7902ccb 100644
--- a/lldb/source/DataFormatters/TypeFormat.cpp
+++ b/lldb/source/DataFormatters/TypeFormat.cpp
@@ -111,12 +111,12 @@
             valobj->GetBitfieldBitSize(),   // Bitfield bit size
             valobj->GetBitfieldBitOffset(), // Bitfield bit offset
             exe_scope);
-        // Given that we do not want to set the ValueObject's m_error
-        // for a formatting error (or else we wouldn't be able to reformat
-        // until a next update), an empty string is treated as a "false"
-        // return from here, but that's about as severe as we get
-        // CompilerType::DumpTypeValue() should always return
-        // something, even if that something is an error message
+        // Given that we do not want to set the ValueObject's m_error for a
+        // formatting error (or else we wouldn't be able to reformat until a
+        // next update), an empty string is treated as a "false" return from
+        // here, but that's about as severe as we get
+        // CompilerType::DumpTypeValue() should always return something, even
+        // if that something is an error message
         dest = sstr.GetString();
       }
     }
diff --git a/lldb/source/DataFormatters/ValueObjectPrinter.cpp b/lldb/source/DataFormatters/ValueObjectPrinter.cpp
index 863ff3a..43e91a2 100644
--- a/lldb/source/DataFormatters/ValueObjectPrinter.cpp
+++ b/lldb/source/DataFormatters/ValueObjectPrinter.cpp
@@ -244,8 +244,8 @@
 
   // always show the type at the root level if it is invalid
   if (show_type) {
-    // Some ValueObjects don't have types (like registers sets). Only print
-    // the type if there is one to print
+    // Some ValueObjects don't have types (like registers sets). Only print the
+    // type if there is one to print
     ConstString type_name;
     if (m_compiler_type.IsValid()) {
       if (m_options.m_use_type_display_name)
@@ -402,12 +402,10 @@
     }
     if (m_error.size()) {
       // we need to support scenarios in which it is actually fine for a value
-      // to have no type
-      // but - on the other hand - if we get an error *AND* have no type, we try
-      // to get out
-      // gracefully, since most often that combination means "could not resolve
-      // a type"
-      // and the default failure mode is quite ugly
+      // to have no type but - on the other hand - if we get an error *AND*
+      // have no type, we try to get out gracefully, since most often that
+      // combination means "could not resolve a type" and the default failure
+      // mode is quite ugly
       if (!m_compiler_type.IsValid()) {
         m_stream->Printf(" <could not resolve type>");
         return false;
@@ -416,10 +414,10 @@
       error_printed = true;
       m_stream->Printf(" <%s>\n", m_error.c_str());
     } else {
-      // Make sure we have a value and make sure the summary didn't
-      // specify that the value should not be printed - and do not print
-      // the value if this thing is nil
-      // (but show the value if the user passes a format explicitly)
+      // Make sure we have a value and make sure the summary didn't specify
+      // that the value should not be printed - and do not print the value if
+      // this thing is nil (but show the value if the user passes a format
+      // explicitly)
       TypeSummaryImpl *entry = GetSummaryFormatter();
       if (!IsNil() && !IsUninitialized() && !m_value.empty() &&
           (entry == NULL || (entry->DoesPrintValue(m_valobj) ||
@@ -494,8 +492,8 @@
   if (is_uninit)
     return false;
 
-  // if the user has specified an element count, always print children
-  // as it is explicit user demand being honored
+  // if the user has specified an element count, always print children as it is
+  // explicit user demand being honored
   if (m_options.m_pointer_as_array)
     return true;
 
@@ -505,17 +503,16 @@
     return false;
 
   if (is_failed_description || m_curr_depth < m_options.m_max_depth) {
-    // We will show children for all concrete types. We won't show
-    // pointer contents unless a pointer depth has been specified.
-    // We won't reference contents unless the reference is the
-    // root object (depth of zero).
+    // We will show children for all concrete types. We won't show pointer
+    // contents unless a pointer depth has been specified. We won't reference
+    // contents unless the reference is the root object (depth of zero).
 
-    // Use a new temporary pointer depth in case we override the
-    // current pointer depth below...
+    // Use a new temporary pointer depth in case we override the current
+    // pointer depth below...
 
     if (is_ptr || is_ref) {
-      // We have a pointer or reference whose value is an address.
-      // Make sure that address is not NULL
+      // We have a pointer or reference whose value is an address. Make sure
+      // that address is not NULL
       AddressType ptr_address_type;
       if (m_valobj->GetPointerValue(&ptr_address_type) == 0)
         return false;
@@ -523,10 +520,10 @@
       const bool is_root_level = m_curr_depth == 0;
 
       if (is_ref && is_root_level) {
-        // If this is the root object (depth is zero) that we are showing
-        // and it is a reference, and no pointer depth has been supplied
-        // print out what it references. Don't do this at deeper depths
-        // otherwise we can end up with infinite recursion...
+        // If this is the root object (depth is zero) that we are showing and
+        // it is a reference, and no pointer depth has been supplied print out
+        // what it references. Don't do this at deeper depths otherwise we can
+        // end up with infinite recursion...
         return true;
       }
 
@@ -759,8 +756,7 @@
 void ValueObjectPrinter::PrintChildrenIfNeeded(bool value_printed,
                                                bool summary_printed) {
   // this flag controls whether we tried to display a description for this
-  // object and failed
-  // if that happens, we want to display the children, if any
+  // object and failed if that happens, we want to display the children, if any
   bool is_failed_description =
       !PrintObjectDescriptionIfNeeded(value_printed, summary_printed);
 
diff --git a/lldb/source/DataFormatters/VectorType.cpp b/lldb/source/DataFormatters/VectorType.cpp
index 4fb92ca..d85a7e6 100644
--- a/lldb/source/DataFormatters/VectorType.cpp
+++ b/lldb/source/DataFormatters/VectorType.cpp
@@ -157,9 +157,8 @@
 
   case lldb::eFormatDefault: {
     // special case the (default, char) combination to actually display as an
-    // integer value
-    // most often, you won't want to see the ASCII characters... (and if you do,
-    // eFormatChar is a keystroke away)
+    // integer value most often, you won't want to see the ASCII characters...
+    // (and if you do, eFormatChar is a keystroke away)
     bool is_char = element_type.IsCharType();
     bool is_signed = false;
     element_type.IsIntegerType(is_signed);