Silencing an MSVC C4334 warning ('<<' : result of 32-bit shift implicitly converted...

[oota-llvm.git] / lib / AsmParser / Parser.cpp

diff --git a/lib/AsmParser/Parser.cpp b/lib/AsmParser/Parser.cpp
index b7921f830581706149353ed292b47605fdf78699..9bc9b241666e1f83a84c46bdf88badbe881ab159 100644 (file)
--- a/lib/AsmParser/Parser.cpp
+++ b/lib/AsmParser/Parser.cpp
@@ -1,92 +1,66 @@
-//===- Parser.cpp - Main dispatch module for the Parser library -------------===
+//===- Parser.cpp - Main dispatch module for the Parser library -----------===//
 //
 //                     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 is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
-// This library implements the functionality defined in llvm/assembly/parser.h
+// This library implements the functionality defined in llvm/AsmParser/Parser.h
 //
-//===------------------------------------------------------------------------===
+//===----------------------------------------------------------------------===//
 
-#include "ParserInternals.h"
-#include "llvm/Module.h"
+#include "llvm/AsmParser/Parser.h"
+#include "LLParser.h"
+#include "llvm/IR/Module.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/Support/SourceMgr.h"
+#include "llvm/Support/raw_ostream.h"
+#include <cstring>
+#include <system_error>
 using namespace llvm;
 
+bool llvm::parseAssemblyInto(std::unique_ptr<MemoryBuffer> F, Module &M,
+                             SMDiagnostic &Err) {
+  SourceMgr SM;
+  StringRef Buf = F->getBuffer();
+  SM.AddNewSourceBuffer(F.release(), SMLoc());
 
-ParseError* TheParseError = 0; /// FIXME: Not threading friendly
-
-Module *llvm::ParseAssemblyFile(const std::string &Filename, ParseError* Err) {
-  FILE *F = stdin;
-
-  if (Filename != "-") {
-    F = fopen(Filename.c_str(), "r");
-
-    if (F == 0) {
-      if (Err)
-        Err->setError(Filename,"Could not open file '" + Filename + "'");
-      return 0;
-    }
-  }
-
-  TheParseError = Err;
-  Module *Result = RunVMAsmParser(Filename, F);
-
-  if (F != stdin)
-    fclose(F);
-
-  return Result;
+  return LLParser(Buf, SM, Err, &M).Run();
 }
 
-Module *llvm::ParseAssemblyString(
-  const char * AsmString, Module * M, ParseError* Err) 
-{
-  TheParseError = Err;
-  return RunVMAsmParser(AsmString, M);
-}
-
-
-//===------------------------------------------------------------------------===
-//                              ParseError Class
-//===------------------------------------------------------------------------===
-
+std::unique_ptr<Module> llvm::parseAssembly(std::unique_ptr<MemoryBuffer> F,
+                                            SMDiagnostic &Err,
+                                            LLVMContext &Context) {
+  std::unique_ptr<Module> M =
+      make_unique<Module>(F->getBufferIdentifier(), Context);
 
-void ParseError::setError(const std::string &filename,
-                         const std::string &message,
-                         int lineNo, int colNo)
-{
-  Filename = filename;
-  Message = message;
-  LineNo = lineNo;
-  colNo = colNo;
-}
+  if (parseAssemblyInto(std::move(F), *M, Err))
+    return nullptr;
 
-ParseError::ParseError(const ParseError &E)
-  : Filename(E.Filename), Message(E.Message) {
-  LineNo = E.LineNo;
-  ColumnNo = E.ColumnNo;
+  return std::move(M);
 }
 
-// Includes info from options
-const std::string ParseError::getMessage() const {
-  std::string Result;
-  char Buffer[10];
+std::unique_ptr<Module> llvm::parseAssemblyFile(StringRef Filename,
+                                                SMDiagnostic &Err,
+                                                LLVMContext &Context) {
+  ErrorOr<std::unique_ptr<MemoryBuffer>> FileOrErr =
+      MemoryBuffer::getFileOrSTDIN(Filename);
+  if (std::error_code EC = FileOrErr.getError()) {
+    Err = SMDiagnostic(Filename, SourceMgr::DK_Error,
+                       "Could not open input file: " + EC.message());
+    return nullptr;
+  }
 
-  if (Filename == "-")
-    Result += "<stdin>";
-  else
-    Result += Filename;
+  return parseAssembly(std::move(FileOrErr.get()), Err, Context);
+}
 
-  if (LineNo != -1) {
-    sprintf(Buffer, "%d", LineNo);
-    Result += std::string(":") + Buffer;
-    if (ColumnNo != -1) {
-      sprintf(Buffer, "%d", ColumnNo);
-      Result += std::string(",") + Buffer;
-    }
-  }
+std::unique_ptr<Module> llvm::parseAssemblyString(StringRef AsmString,
+                                                  SMDiagnostic &Err,
+                                                  LLVMContext &Context) {
+  std::unique_ptr<MemoryBuffer> F(
+      MemoryBuffer::getMemBuffer(AsmString, "<string>"));
 
-  return Result + ": " + Message;
+  return parseAssembly(std::move(F), Err, Context);
 }