From fbc47dc1e489d62e9c0a1b9efa84a4cf424442c4 Mon Sep 17 00:00:00 2001
From: Paul Beckingham <paul@beckingham.net>
Date: Tue, 22 Dec 2015 12:26:06 -0500
Subject: [PATCH] gr: Added utility to check grammar

---
 CMakeLists.txt     |   2 +-
 src/.gitignore     |   1 +
 src/CMakeLists.txt |   3 ++
 src/gr.cpp         | 106 +++++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 111 insertions(+), 1 deletion(-)
 create mode 100644 src/gr.cpp

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6029cad2..c7e002f1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -119,5 +119,5 @@ set (CPACK_SOURCE_IGNORE_FILES  "CMakeCache" "CMakeFiles" "CPackConfig" "CPackSo
                                 "_CPack_Packages" "cmake_install" "install_manifest" "Makefile$"
                                 "test" "package-config" "misc/*" "src/timew$" "src/common/libcommon.a"
                                 "performance" "src/libtimew.a" "/\\\\.gitignore" "/\\\\.git/" "swp$"
-                                "src/lex$")
+                                "src/gr$")
 include (CPack)
diff --git a/src/.gitignore b/src/.gitignore
index d64ceca8..4df4b855 100644
--- a/src/.gitignore
+++ b/src/.gitignore
@@ -1,4 +1,5 @@
 timew
+gr
 libtimew.a
 CMakeFiles
 Makefile
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 30a7d0af..927f36c5 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -10,10 +10,13 @@ set (timew_SRCS Grammar.cpp     Grammar.h
 
 add_library (timew STATIC ${timew_SRCS})
 add_executable (timew_executable timew.cpp)
+add_executable (gr_executable gr.cpp)
 
 target_link_libraries (timew_executable common timew ${TIMEW_LIBRARIES})
+target_link_libraries (gr_executable common timew ${TIMEW_LIBRARIES})
 
 set_property (TARGET timew_executable PROPERTY OUTPUT_NAME "timew")
+set_property (TARGET gr_executable PROPERTY OUTPUT_NAME "gr")
 
 install (TARGETS timew_executable DESTINATION ${TIMEW_BINDIR})
 
diff --git a/src/gr.cpp b/src/gr.cpp
new file mode 100644
index 00000000..c100ff9f
--- /dev/null
+++ b/src/gr.cpp
@@ -0,0 +1,106 @@
+////////////////////////////////////////////////////////////////////////////////
+//
+// Copyright 2015, Paul Beckingham, Federico Hernandez.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+// http://www.opensource.org/licenses/mit-license.php
+//
+////////////////////////////////////////////////////////////////////////////////
+
+#include <cmake.h>
+#include <FS.h>
+#include <Grammar.h>
+#include <iostream>
+#include <string>
+#include <stdlib.h>
+
+////////////////////////////////////////////////////////////////////////////////
+void usage ()
+{
+  std::cout << "\n"
+            << "Usage: gr [options] <grammar> [<args>]\n"
+            << "\n"
+            << "Options are:\n"
+            << "  -h/--help       Command usage\n"
+            << "\n";
+  exit (-1);
+}
+
+////////////////////////////////////////////////////////////////////////////////
+int main (int argc, char** argv)
+{
+  // Process command line arguments
+  std::string grammarFile = "";
+  std::string commandLine = "";
+/*
+  std::vector <std::string> args;
+*/
+
+  for (int i = 1; i < argc; ++i)
+  {
+    if (argv[i][0] == '-')
+    {
+           if (!strcmp (argv[i], "-h"))         usage ();
+      else if (!strcmp (argv[i], "--help"))     usage ();
+      else
+      {
+        std::cout << "Unrecognized option '" << argv[i] << "'" << std::endl;
+        usage ();
+      }
+    }
+    else if (grammarFile == "")
+    {
+      grammarFile = argv[i];
+    }
+    else
+    {
+      if (commandLine != "")
+        commandLine += " ";
+
+      commandLine += "'" + std::string (argv[i]) + "'";
+    }
+  }
+
+  // Display usage for incorrect command line.
+  if (grammarFile == "")
+    usage ();
+
+  try
+  {
+    File file (grammarFile);
+    Grammar grammar;
+    grammar.loadFromFile (file);
+    std::cout << grammar.dump ();
+
+    // TODO Test commandLine against grammar.
+    if (commandLine != "")
+    {
+    }
+  }
+
+  catch (const std::string& error)
+  {
+    std::cout << error << "\n";
+  }
+
+  return 0;
+}
+
+////////////////////////////////////////////////////////////////////////////////