Moved around most of the files so that source code is in src/, documentation

is in doc/, etc.

1 files changed, 125 insertions, 0 deletions

diff --git a/src/expr.h b/src/expr.h
new file mode 100644
index 00000000..8c110ad9
--- /dev/null
+++ b/src/expr.h
@@ -0,0 +1,125 @@
+/*
+ * Copyright (c) 2003-2008, John Wiegley.  All rights reserved.
+ *
+ * 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 New Artisans LLC 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 _EXPR_H
+#define _EXPR_H
+
+#include "value.h"
+
+namespace ledger {
+
+DECLARE_EXCEPTION(parse_error, std::runtime_error);
+DECLARE_EXCEPTION(compile_error, std::runtime_error);
+DECLARE_EXCEPTION(calc_error, std::runtime_error);
+DECLARE_EXCEPTION(usage_error, std::runtime_error);
+
+class scope_t;
+class call_scope_t;
+
+typedef function<value_t (call_scope_t&)> function_t;
+
+class expr_t
+{
+  struct token_t;
+
+  class parser_t;
+  static std::auto_ptr<parser_t> parser;
+
+public:
+  class op_t;
+  typedef intrusive_ptr<op_t> ptr_op_t;
+
+private:
+  ptr_op_t ptr;
+  string   str;
+  bool     compiled;
+
+  static void initialize();
+  static void shutdown();
+
+  friend class session_t;
+
+public:
+  expr_t();
+  expr_t(const expr_t& other);
+  expr_t(const ptr_op_t& _ptr, const string& _str = "");
+
+  expr_t(const string& _str, const unsigned int flags = 0);
+  expr_t(std::istream& in, const unsigned int flags = 0);
+
+  virtual ~expr_t() throw();
+
+  expr_t& operator=(const expr_t& _expr);
+  expr_t& operator=(const string& _expr) {
+    parse(_expr);
+    return *this;
+  }
+
+  operator bool() const throw() {
+    return ptr.get() != NULL;
+  }
+  string text() const throw() {
+    return str;
+  }
+
+  // This has special use in the textual parser
+  void set_text(const string& txt) {
+    str = txt;
+  }
+
+  void     parse(const string& _str, const unsigned int flags = 0);
+  void     parse(std::istream& in, const unsigned int flags = 0);
+	   
+  void     compile(scope_t& scope);
+  value_t  calc(scope_t& scope);
+  value_t  calc(scope_t& scope) const;
+
+  bool	   is_constant() const;
+  bool     is_function() const;
+
+  value_t& constant_value();
+  const value_t& constant_value() const;
+
+  function_t& get_function();
+
+  void     print(std::ostream& out, scope_t& scope) const;
+  void     dump(std::ostream& out) const;
+  void     read(const char *& data);
+  void     write(std::ostream& out) const;
+
+  static value_t eval(const string& _expr, scope_t& scope);
+};
+
+std::ostream& operator<<(std::ostream& out, const expr_t& expr);
+
+} // namespace ledger
+
+#endif // _EXPR_H