added basic message box formatting

components/compiler/exprparser.cpp

@@ -4,11 +4,13 @@
 #include <stdexcept>
 #include <cassert>
 #include <algorithm>
+#include <stack>
 
 #include "generator.hpp"
 #include "scanner.hpp"
 #include "errorhandler.hpp"
 #include "locals.hpp"
+#include "stringparser.hpp"
 
 namespace Compiler
 {
@@ -187,21 +189,7 @@ namespace Compiler
     
     void ExprParser::parseArguments (const std::string& arguments, Scanner& scanner)
     {
-        ExprParser parser (getErrorHandler(), getContext(), mLocals, mLiterals, true);
+        parseArguments (arguments, scanner, mCode);
-        
-        for (std::string::const_iterator iter (arguments.begin()); iter!=arguments.end();
-            ++iter)
-        {
-            parser.reset();    
-            scanner.scan (parser);
-
-            char type = parser.append (mCode);
-
-            if (type!=*iter)
-                Generator::convert (mCode, type, *iter);
-                
-            mOperands.push_back (*iter);
-        }
     }
             
     ExprParser::ExprParser (ErrorHandler& errorHandler, Context& context, Locals& locals,
@@ -285,6 +273,7 @@ namespace Compiler
                 parseArguments ("f", scanner);
 
                 Generator::squareRoot (mCode);
+                mOperands.push_back ('f');
                 
                 mNextOperand = false;
                 return true;
@@ -433,5 +422,60 @@ namespace Compiler
         assert (mOperands.size()==1);
         return mOperands[0];
     }    
+            
+    void ExprParser::parseArguments (const std::string& arguments, Scanner& scanner,
+        std::vector<Interpreter::Type_Code>& code, bool invert)
+    {
+        ExprParser parser (getErrorHandler(), getContext(), mLocals, mLiterals, true);
+        StringParser stringParser (getErrorHandler(), getContext(), mLiterals);
+        
+        std::stack<std::vector<Interpreter::Type_Code> > stack;
+        
+        for (std::string::const_iterator iter (arguments.begin()); iter!=arguments.end();
+            ++iter)
+        {
+            if (*iter=='S')
+            {
+                stringParser.reset();
+                scanner.scan (stringParser);            
+                
+                if (invert)
+                {
+                    std::vector<Interpreter::Type_Code> tmp;
+                    stringParser.append (tmp);
+                    
+                    stack.push (tmp);
+                }
+                else
+                    stringParser.append (code);
+            }
+            else
+            {
+                parser.reset();    
+                scanner.scan (parser);
+
+                std::vector<Interpreter::Type_Code> tmp;
+
+                char type = parser.append (tmp);
+
+                if (type!=*iter)
+                    Generator::convert (tmp, type, *iter);
+                    
+                if (invert)
+                    stack.push (tmp);
+                else
+                    std::copy (tmp.begin(), tmp.end(), std::back_inserter (code));
+            }
+        }
+        
+        while (!stack.empty())
+        {
+            std::vector<Interpreter::Type_Code>& tmp = stack.top();
+        
+            std::copy (tmp.begin(), tmp.end(), std::back_inserter (code));
+        
+            stack.pop();
+        }
+    }    
 }
 

components/compiler/exprparser.hpp

@@ -89,6 +89,13 @@ namespace Compiler
             char append (std::vector<Interpreter::Type_Code>& code);
             ///< Generate code for parsed expression.
             /// \return Type ('l': integer, 'f': float)
+ 
+            void parseArguments (const std::string& arguments, Scanner& scanner,
+                std::vector<Interpreter::Type_Code>& code, bool invert = false);
+            ///< Parse sequence of arguments specified by \a arguments.
+            /// \param arguments Each character represents one arguments ('l': integer,
+            /// 'f': float, 'S': string)                
+            /// \param invert Store arguments in reverted order.
     };
 }
 

components/compiler/generator.cpp

@@ -275,6 +275,12 @@ namespace Compiler
             opFetchFloatLiteral (code);
         }
                 
+        void pushString (CodeContainer& code, Literals& literals, const std::string& value)
+        {
+            int index = literals.addString (value);               
+            opPushInt (code, index);
+        }
+        
         void assignToLocal (CodeContainer& code, char localType,
             int localIndex, const CodeContainer& value, char valueType)
         {               

components/compiler/generator.hpp

@@ -18,6 +18,8 @@ namespace Compiler
 
         void pushFloat (CodeContainer& code, Literals& literals, float value);
         
+        void pushString (CodeContainer& code, Literals& literals, const std::string& value);
+
         void assignToLocal (CodeContainer& code, char localType,
             int localIndex, const CodeContainer& value, char valueType);
             

components/compiler/lineparser.cpp

@@ -78,6 +78,37 @@ namespace Compiler
         
         if (mState==MessageState || mState==MessageCommaState)
         {
+            std::string arguments;
+            
+            for (std::size_t i=0; i<name.size(); ++i)
+            {
+                if (name[i]=='%')
+                {
+                    ++i;
+                    if (i<name.size())
+                    {
+                        if (name[i]=='G' || name[i]=='g')
+                        {
+                            arguments += "l";
+                        }
+                        else if (name[i]=='S' || name[i]=='s')
+                        {
+                            arguments += 'S';
+                        }
+                        else if (name[i]=='.' || name[i]=='f')
+                        {
+                            arguments += 'f';
+                        }
+                    }
+                }
+            }
+
+            if (!arguments.empty())
+            {
+                mExprParser.reset();
+                mExprParser.parseArguments (arguments, scanner, mCode, true);
+            }
+
             Generator::message (mCode, mLiterals, name, 0);
             mState = EndState;
             return false;

components/compiler/stringparser.cpp

@@ -0,0 +1,52 @@
+
+#include "stringparser.hpp"
+
+#include <algorithm>
+#include <iterator>
+
+#include "scanner.hpp"
+#include "generator.hpp"
+
+namespace Compiler
+{
+    StringParser::StringParser (ErrorHandler& errorHandler, Context& context, Literals& literals)
+    : Parser (errorHandler, context), mLiterals (literals), mState (StartState)
+    {
+    
+    }
+
+    bool StringParser::parseName (const std::string& name, const TokenLoc& loc,
+        Scanner& scanner)
+    {
+        if (mState==StartState || mState==CommaState)
+        {
+            Generator::pushString (mCode, mLiterals, name);
+            return false;
+        }
+    
+        return Parser::parseName (name, loc, scanner);
+    }
+
+    bool StringParser::parseSpecial (int code, const TokenLoc& loc, Scanner& scanner)
+    {
+        if (code==Scanner::S_comma && mState==StartState)
+        {
+            mState = CommaState;
+            return true;
+        }
+        
+        return Parser::parseSpecial (code, loc, scanner);
+    }
+    
+    void StringParser::append (std::vector<Interpreter::Type_Code>& code)
+    {
+        std::copy (mCode.begin(), mCode.end(), std::back_inserter (code));
+    }
+
+    void StringParser::reset()
+    {
+        mState = StartState;
+        mCode.clear();
+    }
+}
+

components/compiler/stringparser.hpp

@@ -0,0 +1,46 @@
+#ifndef COMPILER_STRINGPARSER_H_INCLUDED
+#define COMPILER_STRINGPARSER_H_INCLUDED
+
+#include <vector>
+
+#include <components/interpreter/types.hpp>
+
+#include "parser.hpp"
+
+namespace Compiler
+{
+    class Literals;
+    
+    class StringParser : public Parser
+    {
+            enum State
+            {
+                StartState, CommaState
+            };
+    
+            Literals& mLiterals;
+            State mState;
+            std::vector<Interpreter::Type_Code> mCode;
+                
+        public:
+        
+            StringParser (ErrorHandler& errorHandler, Context& context, Literals& literals);
+
+            virtual bool parseName (const std::string& name, const TokenLoc& loc,
+                Scanner& scanner);
+            ///< Handle a name token.
+            /// \return fetch another token?
+
+            virtual bool parseSpecial (int code, const TokenLoc& loc, Scanner& scanner);
+            ///< Handle a special character token.
+            /// \return fetch another token?
+            
+            void append (std::vector<Interpreter::Type_Code>& code);
+            ///< Append code for parsed string.
+            
+            void reset();
+            ///< Reset parser to clean state.    
+    };
+}
+
+#endif

components/interpreter/miscopcodes.hpp

@@ -4,6 +4,7 @@
 #include <stdexcept>
 #include <vector>
 #include <string>
+#include <sstream>
 
 #include "opcodes.hpp"
 #include "runtime.hpp"
@@ -19,10 +20,71 @@ namespace Interpreter
                 if (arg0!=0)
                     throw std::logic_error ("message box buttons not implemented yet");
                 
+                // message    
                 int index = runtime[0];
                 runtime.pop();
+                std::string message = runtime.getStringLiteral (index);
+                
+                // additional parameters
+                std::string formattedMessage;
+                
+                for (std::size_t i=0; i<message.size(); ++i)
+                {
+                    char c = message[i];
+                    
+                    if (c!='%')
+                        formattedMessage += c;
+                    else
+                    {
+                        ++i;
+                        if (i<message.size())
+                        {
+                            c = message[i];
+                            
+                            if (c=='S' || c=='s')
+                            {
+                                int index = runtime[0];
+                                runtime.pop();
+                                formattedMessage += runtime.getStringLiteral (index);
+                            }
+                            else if (c=='g' || c=='G')
+                            {
+                                int value = *reinterpret_cast<const int *> (&runtime[0]);
+                                runtime.pop();
+                                
+                                std::ostringstream out;
+                                out << value;
+                                formattedMessage += out.str();
+                            }
+                            else if (c=='f' || c=='F' || c=='.')
+                            {
+                                while (c!='f' && i<message.size())
+                                {
+                                    ++i;
+                                }
+                            
+                                float value = *reinterpret_cast<const float *> (&runtime[0]);
+                                runtime.pop();
+                                
+                                std::ostringstream out;
+                                out << value;
+                                formattedMessage += out.str();
+                            }
+                            else if (c=='%')
+                                formattedMessage += "%";
+                            else
+                            {
+                                formattedMessage += "%"; 
+                                formattedMessage += c;                    
+                            }
+                        }
+                    }
+                }
+                
+                // buttons (not implemented)
                 std::vector<std::string> buttons;
-                runtime.getContext().messageBox (runtime.getStringLiteral (index), buttons);
+                
+                runtime.getContext().messageBox (formattedMessage, buttons);
             }        
     };
 }