From 449a510671c21d766abdb3f21a5e7a476fed9f0b Mon Sep 17 00:00:00 2001
From: Josh Holtrop <jholtrop+git@gmail.com>
Date: Thu, 20 May 2010 15:59:06 -0400
Subject: [PATCH] re-worked defines in generated parser; writing TK_ #define's
 for token types now

---
 Parser.cc     | 35 +++++++++++++++++++++--------------
 Parser.h      | 15 +++++++++------
 tmpl/parser.h |  2 ++
 3 files changed, 32 insertions(+), 20 deletions(-)

diff --git a/Parser.cc b/Parser.cc
index a34697e..6e2460f 100644
--- a/Parser.cc
+++ b/Parser.cc
@@ -20,17 +20,14 @@ using namespace std;
 
 Parser::Parser()
     : m_classname("Parser"), m_namespace(""), m_extension("cc"),
-    m_token_data(new string()), m_token_code(new string())
+    m_token_data(new string()), m_token_code(new string()),
+    m_defines(new string())
 {
 }
 
-static void writeDefine(ostream & out,
-        const string & defname, const string & definition)
+void Parser::makeDefine(const string & defname, const string & definition)
 {
-    out << "#ifdef " << defname << endl;
-    out << "#undef " << defname << endl;
-    out << "#endif" << endl;
-    out << "#define " << defname << " " << definition << endl;
+    *m_defines += string("#define ") + defname + " " + definition + "\n";
 }
 
 bool Parser::write(const string & fname)
@@ -44,24 +41,34 @@ bool Parser::write(const string & fname)
     ofstream header(header_fname.c_str());
     ofstream body(body_fname.c_str());
 
+    /* make some #define's */
+    int i = 0;
+    for (list<TokenDefinitionRef>::const_iterator it = m_tokens.begin();
+            it != m_tokens.end();
+            it++)
+    {
+        char buff[20];
+        sprintf(buff, "%d", i++);
+        makeDefine(string("TK_") + (*it)->getName(), buff);
+    }
+    if (m_namespace != "")
+    {
+        makeDefine("I_NAMESPACE", m_namespace);
+    }
+    makeDefine("I_CLASSNAME", m_classname);
+
     /* set up replacements */
     setReplacement("token_list", buildTokenList());
     setReplacement("header_name",
             new string(string("\"") + header_fname + "\""));
     setReplacement("token_code", m_token_code);
     setReplacement("token_data", m_token_data);
+    setReplacement("defines", m_defines);
 
     /* write the header */
-    if (m_namespace != "")
-    {
-        writeDefine(header, "I_NAMESPACE", m_namespace);
-    }
-    writeDefine(header, "I_CLASSNAME", m_classname);
-    header << endl;
     writeTmpl(header, (char *) tmpl_parser_h, tmpl_parser_h_len);
 
     /* write the body */
-    body << endl;
     writeTmpl(body, (char *) tmpl_parser_cc, tmpl_parser_cc_len);
 
     header.close();
diff --git a/Parser.h b/Parser.h
index 6b0aa35..12b4eb2 100644
--- a/Parser.h
+++ b/Parser.h
@@ -24,12 +24,6 @@ class Parser
             m_rules.push_back(rd);
         }
         bool write(const std::string & fname);
-        bool writeTmpl(std::ostream & out, char * dat, int len);
-        refptr<std::string> getReplacement(const std::string & name);
-        void setReplacement(const std::string & name, refptr<std::string> val)
-        {
-            m_replacements[name] = val;
-        }
         bool parseInputFile(char * buff, int size);
 
         void setClassName(const std::string & cn) { m_classname = cn; }
@@ -43,6 +37,14 @@ class Parser
 
     protected:
         refptr<std::string> buildTokenList();
+        bool writeTmpl(std::ostream & out, char * dat, int len);
+        refptr<std::string> getReplacement(const std::string & name);
+        void setReplacement(const std::string & name, refptr<std::string> val)
+        {
+            m_replacements[name] = val;
+        }
+        void makeDefine(const std::string & defname,
+                const std::string & definition);
 
         std::list<TokenDefinitionRef> m_tokens;
         std::vector< refptr< RuleDefinition > > m_rules;
@@ -52,6 +54,7 @@ class Parser
         std::map< std::string, refptr<std::string> > m_replacements;
         refptr<std::string> m_token_data;
         refptr<std::string> m_token_code;
+        refptr<std::string> m_defines;
 };
 
 #endif
diff --git a/tmpl/parser.h b/tmpl/parser.h
index 506510b..fe657e1 100644
--- a/tmpl/parser.h
+++ b/tmpl/parser.h
@@ -8,6 +8,8 @@
 #include <map>
 #include <vector>
 
+{%defines%}
+
 #ifdef I_NAMESPACE
 namespace I_NAMESPACE {
 #endif