AsmParser: Save and restore the parsing state for types using SlotMapping.

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

diff --git a/lib/AsmParser/Parser.cpp b/lib/AsmParser/Parser.cpp
index 0005e11737b8e781c4e79c80dd3231168da7555a..4e55e62ecf5c49c76cb62a82995e35a9d2fde404 100644 (file)
--- a/lib/AsmParser/Parser.cpp
+++ b/lib/AsmParser/Parser.cpp
@@ -1,4 +1,4 @@
-//===- Parser.cpp - Main dispatch module for the Parser library -------------===
+//===- Parser.cpp - Main dispatch module for the Parser library -----------===//
 //
 //                     The LLVM Compiler Infrastructure
 //
@@ -7,84 +7,74 @@
 //
 //===----------------------------------------------------------------------===//
 //
-// 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/ADT/STLExtras.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(MemoryBufferRef F, Module &M, SMDiagnostic &Err,
+                             SlotMapping *Slots) {
+  SourceMgr SM;
+  std::unique_ptr<MemoryBuffer> Buf = MemoryBuffer::getMemBuffer(F);
+  SM.AddNewSourceBuffer(std::move(Buf), SMLoc());
 
-ParseError* TheParseError = 0; /// FIXME: Not threading friendly
-
-Module *llvm::ParseAssemblyFile(const std::string &Filename, ParseError* Err) {
-  std::string ErrorStr;
-  MemoryBuffer *F = MemoryBuffer::getFileOrSTDIN(Filename.c_str(), &ErrorStr);
-  if (F == 0) {
-    if (Err)
-      Err->setError(Filename, "Could not open input file '" + Filename + "'");
-    return 0;
-  }
-  
-  TheParseError = Err;
-  Module *Result = RunVMAsmParser(F);
-  delete F;
-  return Result;
+  return LLParser(F.getBuffer(), SM, Err, &M, Slots).Run();
 }
 
-Module *llvm::ParseAssemblyString(const char *AsmString, Module *M, 
-                                  ParseError *Err) {
-  TheParseError = Err;
-  MemoryBuffer *F = MemoryBuffer::getMemBuffer(AsmString, 
-                                               AsmString+strlen(AsmString),
-                                               "<string>");
-  Module *Result = RunVMAsmParser(F);
-  delete F;
-  return Result;
-}
+std::unique_ptr<Module> llvm::parseAssembly(MemoryBufferRef F,
+                                            SMDiagnostic &Err,
+                                            LLVMContext &Context,
+                                            SlotMapping *Slots) {
+  std::unique_ptr<Module> M =
+      make_unique<Module>(F.getBufferIdentifier(), Context);
 
+  if (parseAssemblyInto(F, *M, Err, Slots))
+    return nullptr;
 
-//===------------------------------------------------------------------------===
-//                              ParseError Class
-//===------------------------------------------------------------------------===
+  return M;
+}
 
+std::unique_ptr<Module> llvm::parseAssemblyFile(StringRef Filename,
+                                                SMDiagnostic &Err,
+                                                LLVMContext &Context,
+                                                SlotMapping *Slots) {
+  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;
+  }
 
-void ParseError::setError(const std::string &filename,
-                          const std::string &message,
-                          int lineNo, int colNo) {
-  Filename = filename;
-  Message = message;
-  LineNo = lineNo;
-  colNo = colNo;
+  return parseAssembly(FileOrErr.get()->getMemBufferRef(), Err, Context, Slots);
 }
 
-ParseError::ParseError(const ParseError &E)
-  : Filename(E.Filename), Message(E.Message) {
-  LineNo = E.LineNo;
-  ColumnNo = E.ColumnNo;
+std::unique_ptr<Module> llvm::parseAssemblyString(StringRef AsmString,
+                                                  SMDiagnostic &Err,
+                                                  LLVMContext &Context,
+                                                  SlotMapping *Slots) {
+  MemoryBufferRef F(AsmString, "<string>");
+  return parseAssembly(F, Err, Context, Slots);
 }
 
-// Includes info from options
-const std::string ParseError::getMessage() const {
-  std::string Result;
-  char Buffer[10];
-
-  if (Filename == "-")
-    Result += "<stdin>";
-  else
-    Result += Filename;
-
-  if (LineNo != -1) {
-    sprintf(Buffer, "%d", LineNo);
-    Result += std::string(":") + Buffer;
-    if (ColumnNo != -1) {
-      sprintf(Buffer, "%d", ColumnNo);
-      Result += std::string(",") + Buffer;
-    }
-  }
-
-  return Result + ": " + Message;
+Constant *llvm::parseConstantValue(StringRef Asm, SMDiagnostic &Err,
+                                   const Module &M, const SlotMapping *Slots) {
+  SourceMgr SM;
+  std::unique_ptr<MemoryBuffer> Buf = MemoryBuffer::getMemBuffer(Asm);
+  SM.AddNewSourceBuffer(std::move(Buf), SMLoc());
+  Constant *C;
+  if (LLParser(Asm, SM, Err, const_cast<Module *>(&M))
+          .parseStandaloneConstantValue(C, Slots))
+    return nullptr;
+  return C;
 }