Initial revision

llvm-svn: 2

1 files changed, 84 insertions, 0 deletions

diff --git a/llvm/lib/AsmParser/Parser.cpp b/llvm/lib/AsmParser/Parser.cpp
new file mode 100644
index 00000000000..57c831e9e17
--- /dev/null
+++ b/llvm/lib/AsmParser/Parser.cpp
@@ -0,0 +1,84 @@
+//===- Parser.cpp - Main dispatch module for the Parser library -------------===
+//
+// This library implements the functionality defined in llvm/assembly/parser.h
+//
+//===------------------------------------------------------------------------===
+
+#include "llvm/Analysis/Verifier.h"
+#include "llvm/Module.h"
+#include "ParserInternals.h"
+#include <stdio.h>  // for sprintf
+
+// 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 ToolCommandLine &Opts) throw (ParseException) {
+  FILE *F = stdin;
+
+  if (Opts.getInputFilename() != "-") 
+    F = fopen(Opts.getInputFilename().c_str(), "r");
+
+  if (F == 0) {
+    throw ParseException(Opts, string("Could not open file '") + 
+			 Opts.getInputFilename() + "'");
+  }
+
+  // TODO: If this throws an exception, F is not closed.
+  Module *Result = RunVMAsmParser(Opts, F);
+
+  if (F != stdin)
+    fclose(F);
+
+  if (Result) {  // Check to see that it is valid...
+    vector<string> Errors;
+    if (verify(Result, Errors)) {
+      delete Result; Result = 0;
+      string Message;
+
+      for (unsigned i = 0; i < Errors.size(); i++)
+	Message += Errors[i] + "\n";
+
+      throw ParseException(Opts, Message);
+    }
+  }
+  return Result;
+}
+
+
+//===------------------------------------------------------------------------===
+//                              ParseException Class
+//===------------------------------------------------------------------------===
+
+
+ParseException::ParseException(const ToolCommandLine &opts, 
+			       const string &message, int lineNo, int colNo) 
+  : Opts(opts), Message(message) {
+  LineNo = lineNo; ColumnNo = colNo;
+}
+
+ParseException::ParseException(const ParseException &E) 
+  : Opts(E.Opts), Message(E.Message) {
+  LineNo = E.LineNo;
+  ColumnNo = E.ColumnNo;
+}
+
+const string ParseException::getMessage() const { // Includes info from options
+  string Result;
+  char Buffer[10];
+
+  if (Opts.getInputFilename() == "-") 
+    Result += "<stdin>";
+  else
+    Result += Opts.getInputFilename();
+
+  if (LineNo != -1) {
+    sprintf(Buffer, "%d", LineNo);
+    Result += string(":") + Buffer;
+    if (ColumnNo != -1) {
+      sprintf(Buffer, "%d", ColumnNo);
+      Result += string(",") + Buffer;
+    }
+  }
+  
+  return Result + ": " + Message;
+}