Implement parsing of C++ module declarations

1 files changed, 60 insertions, 0 deletions

diff --git a/build2/cc/parser.hxx b/build2/cc/parser.hxx
new file mode 100644
index 0000000..d52ddc9
--- /dev/null
+++ b/build2/cc/parser.hxx
@@ -0,0 +1,60 @@
+// file      : build2/cc/parser.hxx -*- C++ -*-
+// copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
+// license   : MIT; see accompanying LICENSE file
+
+#ifndef BUILD2_CC_PARSER_HXX
+#define BUILD2_CC_PARSER_HXX
+
+#include <build2/types.hxx>
+#include <build2/utility.hxx>
+
+#include <build2/diagnostics.hxx>
+
+namespace build2
+{
+  namespace cc
+  {
+    // Extract (currently module) information from a preprocessed C/C++
+    // source.
+    //
+    struct translation_unit
+    {
+      string         module_name;      // If not empty, then a module unit.
+      bool           module_interface; // If true, then module interface unit.
+      vector<string> module_imports;   // Imported modules.
+    };
+
+    struct token;
+    class lexer;
+
+    class parser
+    {
+    public:
+      parser (): fail ("error", &name_), warn ("warning", &name_) {}
+
+      translation_unit
+      parse (istream&, const path& name);
+
+    private:
+      void
+      parse_import (token&);
+
+      void
+      parse_module (token&, bool);
+
+      string
+      parse_module_name (token&);
+
+    private:
+      const path* name_;
+
+      const fail_mark  fail;
+      const basic_mark warn;
+
+      lexer* l_;
+      translation_unit* u_;
+    };
+  }
+}
+
+#endif // BUILD2_CC_PARSER_HXX