X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FAssembly%2FParser.h;h=bc7995eb6f2cdbd50d177febbd3f90b4c095deb3;hb=7adb53e7b1a4ec0cda17cbc946da44147c141d69;hp=02e5d4fbb68745ff059f40d0f9a6355fe66a20db;hpb=697954c15da58bd8b186dbafdedd8b06db770201;p=oota-llvm.git

diff --git a/include/llvm/Assembly/Parser.h b/include/llvm/Assembly/Parser.h
index 02e5d4fbb68..bc7995eb6f2 100644
--- a/include/llvm/Assembly/Parser.h
+++ b/include/llvm/Assembly/Parser.h
@@ -1,6 +1,13 @@
-//===-- llvm/assembly/Parser.h - Parser for VM assembly files ----*- C++ -*--=//
+//===-- llvm/Assembly/Parser.h - Parser for VM assembly files ---*- C++ -*-===//
 //
-//  These classes are implemented by the lib/AssemblyParser 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.
+//
+//===----------------------------------------------------------------------===//
+//
+//  These classes are implemented by the lib/AsmParser library.
 //
 //===----------------------------------------------------------------------===//
 
@@ -9,30 +16,50 @@
 
 #include <string>
 
+namespace llvm {
+
 class Module;
-class ParseException;
+class ParseError;
 
 
-// The useful interface defined by this file... Parse an ascii file, and return
-// the internal representation in a nice slice'n'dice'able representation.
-//
-Module *ParseAssemblyFile(const std::string &Filename);// throw (ParseException)
+/// This function is the main interface to the LLVM Assembly Parse. It parses 
+/// an ascii file that (presumably) contains LLVM Assembly code. It returns a
+/// Module (intermediate representation) with the corresponding features. Note
+/// that this does not verify that the generated Module is valid, so you should
+/// run the verifier after parsing the file to check that it is okay.
+/// @brief Parse LLVM Assembly from a file
+Module *ParseAssemblyFile(
+  const std::string &Filename, ///< The name of the file to parse
+  ParseError* Error = 0        ///< If not null, an object to return errors in.
+);
+
+/// The function is a secondary interface to the LLVM Assembly Parse. It parses 
+/// an ascii string that (presumably) contains LLVM Assembly code. It returns a
+/// Module (intermediate representation) with the corresponding features. Note
+/// that this does not verify that the generated Module is valid, so you should
+/// run the verifier after parsing the file to check that it is okay.
+/// @brief Parse LLVM Assembly from a string
+Module *ParseAssemblyString(
+  const char * AsmString, ///< The string containing assembly
+  Module * M,             ///< A module to add the assembly too.
+  ParseError* Error = 0   ///< If not null, an object to return errors in.
+);
 
 //===------------------------------------------------------------------------===
 //                              Helper Classes
 //===------------------------------------------------------------------------===
 
-// ParseException - For when an exceptional event is generated by the parser.
-// This class lets you print out the exception message
-//
-class ParseException {
+/// An instance of this class can be passed to ParseAssemblyFile or 
+/// ParseAssemblyString functions in order to capture error information from
+/// the parser.  It provides a standard way to print out the error message
+/// including the file name and line number where the error occurred.
+/// @brief An LLVM Assembly Parsing Error Object
+class ParseError {
 public:
-  ParseException(const std::string &filename, const std::string &message, 
-		 int LineNo = -1, int ColNo = -1);
-
-  ParseException(const ParseException &E);
+  ParseError() : Filename("unknown"), Message("none"), LineNo(0), ColumnNo(0) {}
+  ParseError(const ParseError &E);
 
-  // getMessage - Return the message passed in at construction time plus extra 
+  // getMessage - Return the message passed in at construction time plus extra
   // information extracted from the options used to parse with...
   //
   const std::string getMessage() const;
@@ -45,9 +72,12 @@ public:
     return Filename;
   }
 
+  void setError(const std::string &filename, const std::string &message,
+                 int LineNo = -1, int ColNo = -1);
+
   // getErrorLocation - Return the line and column number of the error in the
-  // input source file.  The source filename can be derived from the 
-  // ParserOptions in effect.  If positional information is not applicable, 
+  // input source file.  The source filename can be derived from the
+  // ParserOptions in effect.  If positional information is not applicable,
   // these will return a value of -1.
   //
   inline const void getErrorLocation(int &Line, int &Column) const {
@@ -59,7 +89,9 @@ private :
   std::string Message;
   int LineNo, ColumnNo;                               // -1 if not relevant
 
-  ParseException &operator=(const ParseException &E); // objects by reference
+  ParseError &operator=(const ParseError &E); // objects by reference
 };
 
+} // End llvm namespace
+
 #endif