From 4974b4763bd60eb875f93a71dbe2fe82ecfed9fc Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Sat, 5 Sep 2009 16:29:23 +0200
Subject: Add semantic graph and traversal mechanism

The parser now builds the semantic graph.
---
 cli/semantics/expression.hxx | 79 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 79 insertions(+)
 create mode 100644 cli/semantics/expression.hxx

(limited to 'cli/semantics/expression.hxx')

diff --git a/cli/semantics/expression.hxx b/cli/semantics/expression.hxx
new file mode 100644
index 0000000..00f62da
--- /dev/null
+++ b/cli/semantics/expression.hxx
@@ -0,0 +1,79 @@
+// file      : cli/semantics/expression.hxx
+// author    : Boris Kolpackov <boris@codesynthesis.com>
+// copyright : Copyright (c) 2009 Code Synthesis Tools CC
+// license   : MIT; see accompanying LICENSE file
+
+#ifndef CLI_SEMANTICS_EXPRESSION_HXX
+#define CLI_SEMANTICS_EXPRESSION_HXX
+
+#include <string>
+#include <semantics/elements.hxx>
+
+namespace semantics
+{
+  //
+  //
+  class initialized;
+
+  //
+  //
+  class expression: public node
+  {
+  public:
+    enum expression_type
+    {
+      string_lit,
+      char_lit,
+      bool_lit,
+      int_lit,
+      float_lit,
+      call_expr,
+      identifier
+    };
+
+    expression_type
+    type () const
+    {
+      return type_;
+    }
+
+    std::string const&
+    value () const
+    {
+      return value_;
+    }
+
+  public:
+    initialized&
+    initializes () const
+    {
+      return *initializes_;
+    }
+
+  protected:
+    friend class graph<node, edge>;
+
+    expression (path const& file,
+                size_t line,
+                size_t column,
+                expression_type type,
+                std::string const& value)
+        : node (file, line, column), type_ (type), value_ (value)
+    {
+    }
+
+    void
+    add_edge_right (initialized& e)
+    {
+      initializes_ = &e;
+    }
+
+  private:
+    initialized* initializes_;
+
+    expression_type type_;
+    std::string value_;
+  };
+}
+
+#endif // CLI_SEMANTICS_EXPRESSION_HXX
-- 
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