Add src/rt for core runtime support.

4 files changed, 138 insertions, 0 deletions

diff --git a/src/include/Constructor.H b/src/include/Constructor.H
new file mode 100644
index 00000000..bfab3940
--- /dev/null
+++ b/src/include/Constructor.H
@@ -0,0 +1,80 @@
+// Copyright (C) 2013, Gabriel Dos Reis.
+// All rights reserved.
+// Written by Gabriel Dos Reis.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     - Redistributions of source code must retain the above copyright
+//       notice, this list of conditions and the following disclaimer.
+//
+//     - Redistributions in binary form must reproduce the above copyright
+//       notice, this list of conditions and the following disclaimer in
+//       the documentation and/or other materials provided with the
+//       distribution.
+//
+//     - Neither the name of OpenAxiom. nor the names of its contributors
+//       may be used to endorse or promote products derived from this
+//       software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+// IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+// TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+// PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+// OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#ifndef OPENAXIOM_CONSTRUCTOR_included
+#define OPENAXIOM_CONSTRUCTOR_included
+
+#include <open-axiom/string-pool>
+
+namespace OpenAxiom {
+   namespace VM {
+      // -- identifier
+      using Identifier = String;
+
+      // -- A constructor kind.
+      enum class ConstructorKind { category, domain, package };
+      
+      // -- Data structure for a constructor.
+      struct Constructor {
+         Identifier name;
+         Identifier abbrev;
+         String source_file;
+         String object_file;
+         ConstructorKind kind;
+      };
+   }
+}
+
+// -- specialize helper function objects
+namespace std {
+   template<>
+   struct hash<OpenAxiom::VM::Constructor> {
+      using H = hash<OpenAxiom::VM::Identifier>;
+      H::result_type operator()(const Constructor& c) const {
+         return h(c.name);
+      }
+
+      H h;
+   };
+
+   template<>
+   struct equal_to<OpenAxiom::VM::Constructor> {
+      using E = equal_to<OpenAxiom::VM::Identifier>;
+      using arg_type = OpenAxiom::VM::Constructor;
+      bool operator()(const arg_type& x, const arg_type& y) const {
+         return e(x.name, y.name);
+      }
+      E e;
+   };
+}
+
+#endif  // OPENAXIOM_CONSTRUCTOR_included
diff --git a/src/include/Database.H b/src/include/Database.H
new file mode 100644
index 00000000..cea082c8
--- /dev/null
+++ b/src/include/Database.H
@@ -0,0 +1,54 @@
+// Copyright (C) 2013, Gabriel Dos Reis.
+// All rights reserved.
+// Written by Gabriel Dos Reis.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     - Redistributions of source code must retain the above copyright
+//       notice, this list of conditions and the following disclaimer.
+//
+//     - Redistributions in binary form must reproduce the above copyright
+//       notice, this list of conditions and the following disclaimer in
+//       the documentation and/or other materials provided with the
+//       distribution.
+//
+//     - Neither the name of OpenAxiom. nor the names of its contributors
+//       may be used to endorse or promote products derived from this
+//       software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+// IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+// TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+// PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+// OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#ifndef OPENAXIOM_DATABASE_included
+#define OPENAXIOM_DATABASE_included
+
+#include <open-axiom/FileMapping>
+#include <open-axiom/sexpr>
+#include <open-axiom/Lisp>
+
+namespace OpenAxiom {
+   namespace VM {
+      struct Database {
+         explicit Database(const std::string&);
+         Value find_with(Value, Lisp::Evaluator&);
+      private:
+         Memory::FileMapping file;
+         Sexpr::Reader reader;
+         Pair toc;
+         std::map<Value, Value> dict;
+      };
+   }
+}
+
+#endif  // OPENAXIOM_DATABASE_included
diff --git a/src/include/Lisp.H b/src/include/Lisp.H
index cfd79f38..e10aeaf6 100644
--- a/src/include/Lisp.H
+++ b/src/include/Lisp.H
@@ -109,6 +109,9 @@ namespace OpenAxiom {
       Fixnum retract_to_fixnum(Value);
       Pair retract_to_pair(Value);
       Symbol* retract_to_symbol(Value);
+
+      // -- Alist functions
+      Value assoc(Value, Pair);
    }
 }
 
diff --git a/src/include/sexpr.H b/src/include/sexpr.H
index aa4cfc09..d425b6d8 100644
--- a/src/include/sexpr.H
+++ b/src/include/sexpr.H
@@ -382,6 +382,7 @@ namespace OpenAxiom {
 
          Reader(const Byte*, const Byte*);
          const Byte* position(Ordinal);
+         bool at_start() const { return st.cur == st.start; }
          const Syntax* read();
       private:
          State st;