From d10f91dce5ecc2643496b7ef78149c0cdf37aaae Mon Sep 17 00:00:00 2001
From: Roland Reichwein <mail@reichwein.it>
Date: Sun, 16 Feb 2020 18:41:49 +0100
Subject: Try to match lex grammar (WIP)

---
 cpp.cpp        | 37 +++++++++++++++++++++++++++++++++++--
 debug.h        |  3 +++
 grammer.cpp    |  2 +-
 test-lexer.cpp |  5 ++++-
 4 files changed, 43 insertions(+), 4 deletions(-)
 create mode 100644 debug.h

diff --git a/cpp.cpp b/cpp.cpp
index 2f65a19..8526cff 100644
--- a/cpp.cpp
+++ b/cpp.cpp
@@ -4,6 +4,7 @@
 #include "cppbnf.h"
 #include "grammer.h"
 #include "minicc.h"
+#include "debug.h"
 
 #include <gtest/gtest.h>
 #include <gmock/gmock.h>
@@ -49,7 +50,29 @@ void CPP::preprocessing_tokenize(const std::string& s)
  auto charTokens {sourceToCharTokens(s)};
 
  auto bnf{SubBNF(GetCppBNFLex(), "preprocessing-token")};
- Gram::Compiler compiler(bnf, "preprocessing-token");
+
+ // add to bnf to match whole file
+ bnf["file"] = {
+  {"preprocessing-token-list"},
+  {"whitespace-list", "preprocessing-token-list"}
+ };
+ bnf["preprocessing-token-list"] = {
+  {"preprocessing-token-padded"},
+  {"preprocessing-token-list", "preprocessing-token-padded"}
+ };
+ bnf["preprocessing-token-padded"] = {
+  {"preprocessing-token"},
+  {"preprocessing-token", "whitespace-list"}
+ };
+ bnf["whitespace-list"] = {
+  {"whitespace-char"},
+  {"whitespace-list", "whitespace-char" }
+ };
+ bnf["whitespace-char"] = {
+  {" "}, {"\t"}, {"\n"}, {"\r"}
+ };
+ Gram::Compiler compiler(bnf, "file");
+ debug = true;
  auto Tree = compiler.compile(charTokens);
 }
 
@@ -111,7 +134,17 @@ void CPP::translate(const std::string& code)
  link();
 }
 
-TEST(Cpp, preprocessing_tokenize) {
+class CppTest: public ::testing::Test
+{
+protected:
+ CppTest() {
+  debug = false;
+ }
+ ~CppTest() {
+ }
+};
+
+TEST_F(CppTest, preprocessing_tokenize) {
  CPP::preprocessing_tokenize("int main() { return 1; }");
 }
 
diff --git a/debug.h b/debug.h
new file mode 100644
index 0000000..28502dd
--- /dev/null
+++ b/debug.h
@@ -0,0 +1,3 @@
+#pragma once
+
+extern bool debug;
diff --git a/grammer.cpp b/grammer.cpp
index 808c49e..9df4703 100644
--- a/grammer.cpp
+++ b/grammer.cpp
@@ -4,7 +4,7 @@
 
 using namespace Gram;
 
-static bool debug{false};
+bool debug{false};
 
 void Debug(std::string s)
 {
diff --git a/test-lexer.cpp b/test-lexer.cpp
index 651dfae..b0706df 100644
--- a/test-lexer.cpp
+++ b/test-lexer.cpp
@@ -3,6 +3,7 @@
 #include "lexer.h"
 #include "grammer.h"
 #include "minicc.h"
+#include "debug.h"
 
 #include <boost/algorithm/string.hpp>
 
@@ -20,7 +21,9 @@
 
 class Test: public ::testing::Test {
 protected:
- Test(){}
+ Test(){
+  debug = false;
+ }
  ~Test() override {}
 };
 
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