added basic script parser (can only parse empty script bodies for now)

CMakeLists.txt

@@ -67,7 +67,7 @@ set(MISC_HEADER components/misc/fileops.hpp components/misc/slice_array.hpp
 source_group(misc FILES ${MISC} ${MISC_HEADER})    
     
 set(COMPILER components/compiler/errorhandler.cpp
-    components/compiler/fileparser.cpp
+    components/compiler/fileparser.cpp components/compiler/scriptparser.cpp
     components/compiler/parser.cpp components/compiler/scanner.cpp
     components/compiler/streamerrorhandler.cpp)
 file(GLOB COMPILER_HEADER components/compiler/*.hpp)

components/compiler/fileparser.cpp

@@ -8,7 +8,9 @@
 namespace Compiler
 {
     FileParser::FileParser (ErrorHandler& errorHandler, Context& context)
-    : Parser (errorHandler, context), mState (BeginState)
+    : Parser (errorHandler, context), 
+      mScriptParser (errorHandler, context, true),
+      mState (BeginState)
     {}
 
     std::string FileParser::getName() const
@@ -47,12 +49,6 @@ namespace Compiler
             return true;
         }
         
-        if (mState==EndState && keyword==Scanner::K_end)
-        {
-            mState = EndNameState;
-            return true;
-        }
-        
         return Parser::parseKeyword (keyword, loc, scanner);
     }
 
@@ -62,8 +58,12 @@ namespace Compiler
         {
             if (mState==BeginCompleteState)
             {
-                // TODO: add script parser here
-                mState = EndState;
+                // parse the script body
+                mScriptParser.reset();
+                
+                scanner.scan (mScriptParser);
+                
+                mState = EndNameState;
                 return true;
             }
             
@@ -87,6 +87,7 @@ namespace Compiler
     {
         mState = BeginState;
         mName.clear();
+        mScriptParser.reset();
     }
 }
 

components/compiler/fileparser.hpp

@@ -2,6 +2,7 @@
 #define COMPILER_FILEPARSER_H_INCLUDED
 
 #include "parser.hpp"
+#include "scriptparser.hpp"
 
 namespace Compiler
 {
@@ -11,10 +12,11 @@ namespace Compiler
     {
             enum State
             {
-                BeginState, NameState, BeginCompleteState, EndState, EndNameState,
+                BeginState, NameState, BeginCompleteState, EndNameState,
                 EndCompleteState
             };
             
+            ScriptParser mScriptParser;
             State mState;
             std::string mName;
             

components/compiler/scriptparser.cpp

@@ -0,0 +1,47 @@
+
+#include "scriptparser.hpp"
+
+#include "scanner.hpp"
+
+namespace Compiler
+{
+    ScriptParser::ScriptParser (ErrorHandler& errorHandler, Context& context, bool end)
+    : Parser (errorHandler, context), mEnd (end)
+    {}
+
+    bool ScriptParser::parseName (const std::string& name, const TokenLoc& loc,
+        Scanner& scanner)
+    {
+        return Parser::parseName (name, loc, scanner);
+    }
+
+    bool ScriptParser::parseKeyword (int keyword, const TokenLoc& loc, Scanner& scanner)
+    {
+        if (keyword==Scanner::K_end && mEnd)
+        {
+            return false;
+        }
+    
+        return Parser::parseKeyword (keyword, loc, scanner);
+    }
+
+    bool ScriptParser::parseSpecial (int code, const TokenLoc& loc, Scanner& scanner)
+    {
+        if (code==Scanner::S_newline) // empty line
+            return true;
+            
+        return Parser::parseSpecial (code, loc, scanner);
+    }
+
+    void ScriptParser::parseEOF (Scanner& scanner)
+    {
+        if (mEnd)
+            Parser::parseEOF (scanner);
+    }
+
+    void ScriptParser::reset()
+    {
+    
+    }
+}
+

components/compiler/scriptparser.hpp

@@ -0,0 +1,41 @@
+#ifndef COMPILER_SCRIPTPARSER_H_INCLUDED
+#define COMPILER_SCRIPTPARSER_H_INCLUDED
+
+#include "parser.hpp"
+
+namespace Compiler
+{
+    // Script parser, to be used in dialogue scripts and as part of FileParser
+    
+    class ScriptParser : public Parser
+    {
+            bool mEnd;
+            
+        public:
+        
+            /// \param end of script is marked by end keyword.
+            ScriptParser (ErrorHandler& errorHandler, Context& context, bool end = false);
+    
+            virtual bool parseName (const std::string& name, const TokenLoc& loc,
+                Scanner& scanner);
+            ///< Handle a name token.
+            /// \return fetch another token?
+
+            virtual bool parseKeyword (int keyword, const TokenLoc& loc, Scanner& scanner);
+            ///< Handle a keyword token.
+            /// \return fetch another token?
+
+            virtual bool parseSpecial (int code, const TokenLoc& loc, Scanner& scanner);
+            ///< Handle a special character token.
+            /// \return fetch another token?
+
+            virtual void parseEOF (Scanner& scanner);
+            ///< Handle EOF token.  
+            
+            void reset();
+            ///< Reset parser to clean state.
+    };
+}
+
+#endif
+