[llvm-objdump] - Cleanup the error reporting.

The error reporting function are not consistent.

Before this change:

* They had inconsistent naming (e.g. 'error' vs 'report_error').
* Some of them reported the object name, others - dont.
* Some of them accepted the case when there was no error. (i.e. error code or Error had a success value).

This patch tries to cleanup it a bit.

It also renames report_error -> reportError, report_warning -> reportWarning
and removes a full stop from messages.

Differential revision: https://reviews.llvm.org/D66418

llvm-svn: 369515
diff --git a/llvm/tools/llvm-objdump/llvm-objdump.h b/llvm/tools/llvm-objdump/llvm-objdump.h
index 4d512d2..771e94a 100644
--- a/llvm/tools/llvm-objdump/llvm-objdump.h
+++ b/llvm/tools/llvm-objdump/llvm-objdump.h
@@ -96,8 +96,6 @@
 
 uint64_t getELFSectionLMA(const object::ELFSectionRef& Sec);
 
-void error(std::error_code ec);
-void error(Error E);
 bool isRelocAddressLess(object::RelocationRef A, object::RelocationRef B);
 void parseInputMachO(StringRef Filename);
 void parseInputMachO(object::MachOUniversalBinary *UB);
@@ -129,19 +127,18 @@
 void printSectionContents(const object::ObjectFile *O);
 void printSymbolTable(const object::ObjectFile *O, StringRef ArchiveName,
                       StringRef ArchitectureName = StringRef());
-void warn(Twine Message);
-LLVM_ATTRIBUTE_NORETURN void error(Twine Message);
-LLVM_ATTRIBUTE_NORETURN void report_error(StringRef File, Twine Message);
-LLVM_ATTRIBUTE_NORETURN void report_error(Error E, StringRef File);
+LLVM_ATTRIBUTE_NORETURN void reportError(StringRef File, Twine Message);
+LLVM_ATTRIBUTE_NORETURN void reportError(Error E, StringRef File);
 LLVM_ATTRIBUTE_NORETURN void
-report_error(Error E, StringRef FileName, StringRef ArchiveName,
-             StringRef ArchitectureName = StringRef());
+reportError(Error E, StringRef FileName, StringRef ArchiveName,
+            StringRef ArchitectureName = StringRef());
+void reportWarning(Twine Message, StringRef File);
 
 template <typename T, typename... Ts>
 T unwrapOrError(Expected<T> EO, Ts &&... Args) {
   if (EO)
     return std::move(*EO);
-  report_error(EO.takeError(), std::forward<Ts>(Args)...);
+  reportError(EO.takeError(), std::forward<Ts>(Args)...);
 }
 
 std::string getFileNameForError(const object::Archive::Child &C,