add antlr source code and ReadMe

[toc] / src / main.cpp

diff --git a/src/main.cpp b/src/main.cpp
index 5b53b1004c3641114bf820cad06fabdd4a749c10..a075a800fd3f97ddf0145d7b4892ab91d28d3990 100644 (file)
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -15,29 +15,38 @@ using namespace antlr4;
 \r
 int main(int argc, const char * argv[])\r
 {\r
-  std::ifstream ifs("test/test.toc");\r
+  std::ifstream ifs("test/test2.toc");\r
 \r
+  // create ANTLR input from filestream\r
   ANTLRInputStream input(ifs);\r
 \r
+  // lex input\r
   TocLexer lexer(&input);\r
   CommonTokenStream tokens(&lexer);\r
 \r
+  // parse\r
   TocParser parser(&tokens);\r
+\r
+  // get Prog (root node)\r
   TocParser::ProgContext * prog = parser.prog();\r
-  tree::ParseTree * tree = prog;\r
 \r
+  // dont continue on parse error\r
   if (parser.getNumberOfSyntaxErrors() > 0)\r
   {\r
     std::cerr << "Parsing error" << std::endl;\r
     return 1;\r
   }\r
 \r
+  // print raw parse tree\r
+  //tree::ParseTree * tree = prog;\r
   //std::string s = tree->toStringTree(&parser) + "\n";\r
   //std::cout << "Parse Tree: " << s << std::endl;\r
 \r
+  // generate IR from tree and instantiate generics\r
   Program prg = getProgram(prog, nullptr);\r
   instantiateGenerics(prg);\r
 \r
+  // print to cout and file\r
   try\r
   {\r
     tocProgram(std::cout, prg);\r