Refactored the textual parser, to allow easy extensions in Python.

src/textual.h

@@ -37,20 +37,113 @@
 
 namespace ledger {
 
+#define TIMELOG_SUPPORT 1
+
+#if defined(TIMELOG_SUPPORT)
+class time_log_t;
+#endif
+
 class textual_parser_t : public journal_t::parser_t
 {
 public:
   virtual bool test(std::istream& in) const;
 
-  virtual unsigned int parse(std::istream& in,
-			     session_t&    session,
-			     journal_t&    journal,
-			     account_t *   master        = NULL,
-			     const path *  original_file = NULL);
-};
+  virtual std::size_t parse(std::istream& in,
+			    session_t&    session,
+			    journal_t&    journal,
+			    account_t *   master        = NULL,
+			    const path *  original_file = NULL);
 
-xact_t * parse_xact_text(char * line, account_t * account);
-xact_t * parse_xact(std::istream& in, account_t * account);
+protected:
+  class instance_t : public noncopyable, public scope_t
+  {
+    static const std::size_t MAX_LINE = 1024;
+
+  public:
+    std::list<account_t *>& account_stack;
+#if defined(TIMELOG_SUPPORT)
+    time_log_t&		    timelog;
+#endif
+
+    instance_t *      parent;
+    std::istream&     in;
+    session_t&	      session;
+    journal_t&	      journal;
+    account_t *	      master;
+    const path *      original_file;
+    accounts_map      account_aliases;
+
+    path	      pathname;
+    std::size_t       linenum;
+    std::size_t       src_idx;
+    istream_pos_type  beg_pos;
+    istream_pos_type  end_pos;
+    unsigned long     beg_line;
+    std::size_t       count;
+    std::size_t       errors;
+
+    char	      linebuf[MAX_LINE + 1];
+
+    scoped_ptr<auto_entry_finalizer_t> auto_entry_finalizer;
+
+    instance_t(std::list<account_t *>& _account_stack,
+#if defined(TIMELOG_SUPPORT)
+	       time_log_t&             _timelog,
+#endif
+	       std::istream&	       _in,
+	       session_t&	       _session,
+	       journal_t&	       _journal,
+	       account_t *	       _master        = NULL,
+	       const path *	       _original_file = NULL,
+	       instance_t *            _parent        = NULL);
+
+    ~instance_t();
+
+    void parse();
+    void read_next_directive(); 
+
+#if defined(TIMELOG_SUPPORT)
+    void clock_in_directive(char * line, bool capitalized);
+    void clock_out_directive(char * line, bool capitalized);
+#endif
+
+    void default_commodity_directive(char * line);
+    void default_account_directive(char * line);
+    void price_conversion_directive(char * line);
+    void price_entry_directive(char * line);
+    void nomarket_directive(char * line);
+    void year_directive(char * line);
+    void option_directive(char * line);
+    void automated_entry_directive(char * line);
+    void period_entry_directive(char * line);
+    void entry_directive(char * line);
+    void include_directive(char * line);
+    void account_directive(char * line);
+    void end_directive(char * line);
+    void alias_directive(char * line);
+    void define_directive(char * line);
+    void general_directive(char * line);
+
+    xact_t * parse_xact(char *	    line,
+			account_t * account,
+			entry_t *   entry);
+
+    bool parse_xacts(std::istream&    in,
+		     account_t *      account,
+		     entry_base_t&    entry,
+		     const string&    kind,
+		     istream_pos_type beg_pos);
+
+    entry_t * parse_entry(std::istream&     in,
+			  char *	    line,
+			  account_t *	    master,
+			  istream_pos_type& pos);
+
+    virtual expr_t::ptr_op_t lookup(const string& name);
+  };
+
+  friend class instance_t;
+};
 
 void write_textual_journal(journal_t&	     journal,
 			   const path&	     pathname,
@@ -58,24 +151,6 @@ void write_textual_journal(journal_t&	     journal,
 			   const string&     write_hdr_format,
 			   std::ostream&     out);
 
-#if 0
-class include_context : public file_context
-{
- public:
-  include_context(const path& file, unsigned long line,
-		  const string& desc = "") throw()
-    : file_context(file, line, desc) {}
-  virtual ~include_context() throw() {}
-
-  virtual void describe(std::ostream& out) const throw() {
-    if (! desc.empty())
-      out << desc << ": ";
-    out << "\"" << file.string() << "\", line " << line << ":"
-	<< std::endl;
-  }
-};
-#endif
-
 } // namespace ledger
 
 #endif // _TEXTUAL_H

src/timelog.cc

@@ -29,6 +29,8 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include "timelog.h"
+
 namespace ledger {
 
 namespace {
@@ -119,8 +121,8 @@ time_log_t::~time_log_t()
 }
 
 void time_log_t::clock_in(const datetime_t& checkin,
-			  account_t *	    account = NULL,
-			  const string&     desc    = "")
+			  account_t *	    account,
+			  const string&     desc)
 {
   time_entry_t event(checkin, account, desc);
 
@@ -133,13 +135,14 @@ void time_log_t::clock_in(const datetime_t& checkin,
 }
 
 void time_log_t::clock_out(const datetime_t& checkin,
-			   account_t *	     account = NULL,
-			   const string&     desc    = "")
+			   account_t *	     account,
+			   const string&     desc)
 {
   if (time_entries.empty())
     throw std::logic_error("Timelog check-out event without a check-in");
 
-  clock_out_from_timelog(time_entries, checkin, account, desc, journal);
+  clock_out_from_timelog(time_entries, checkin, account, desc.c_str(),
+			 journal);
 }
 
 } // namespace ledger

src/timelog.h

@@ -32,6 +32,8 @@
 #ifndef _TIMELOG_H
 #define _TIMELOG_H
 
+#include "journal.h"
+
 namespace ledger {
 
 class time_entry_t