Engine directory for ticket #1

Engine/source/shaderGen/shaderOp.cpp

@@ -0,0 +1,158 @@
+//-----------------------------------------------------------------------------
+// Copyright (c) 2012 GarageGames, LLC
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to
+// deal in the Software without restriction, including without limitation the
+// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+// sell copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+// IN THE SOFTWARE.
+//-----------------------------------------------------------------------------
+
+#include "core/strings/stringFunctions.h"
+#include <stdarg.h>
+
+
+#include "shaderOp.h"
+
+//**************************************************************************
+// Shader Operations
+//**************************************************************************
+ShaderOp::ShaderOp( LangElement *in1, LangElement *in2 )
+{
+   mInput[0] = in1;
+   mInput[1] = in2;
+}
+
+//**************************************************************************
+// Declaration Operation - for variables
+//**************************************************************************
+DecOp::DecOp( Var *in1 ) : Parent( in1, NULL )
+{
+   mInput[0] = in1;
+}
+
+//--------------------------------------------------------------------------
+// Print
+//--------------------------------------------------------------------------
+void DecOp::print( Stream &stream )
+{
+   Var *var = dynamic_cast<Var*>( mInput[0] );
+
+   WRITESTR( (char*)var->type );
+   WRITESTR( " " );
+
+   mInput[0]->print( stream );
+}
+
+//**************************************************************************
+// Echo operation - deletes incoming statement!
+//**************************************************************************
+EchoOp::EchoOp( const char * statement ) : Parent( NULL, NULL )
+{
+   mStatement = statement;
+}
+
+//--------------------------------------------------------------------------
+// Destructor
+//--------------------------------------------------------------------------
+EchoOp::~EchoOp()
+{
+   delete [] mStatement;
+}
+
+//--------------------------------------------------------------------------
+// Print
+//--------------------------------------------------------------------------
+void EchoOp::print( Stream &stream )
+{
+   WRITESTR( mStatement );
+}
+
+
+//**************************************************************************
+// General operation
+//**************************************************************************
+GenOp::GenOp( const char * statement, ... ) : Parent( NULL, NULL )
+{
+   VECTOR_SET_ASSOCIATION( mElemList );
+
+   va_list args;
+   va_start(args, statement);
+
+   char* lastEntry = (char*)statement;
+
+   while( 1 )
+   {
+      // search 'statement' for @ symbol
+      char * str = dStrstr( lastEntry, (char *)"@" );
+
+      if( !str )
+      {
+         // not found, handle end of line
+         str = (char*)&statement[ dStrlen( (char*)statement ) ];
+
+         U32 diff = str - lastEntry + 1;
+         if( diff == 1 ) break;
+
+         char * newStr = new char[diff];
+
+         dMemcpy( (void*)newStr, lastEntry, diff );
+
+         mElemList.push_back( new EchoOp( newStr ) );
+
+         break;
+      }
+
+      // create and store statement fragment
+      U32 diff = str - lastEntry + 1;
+
+      if( diff == 1 )
+      {
+         // store langElement
+         LangElement *elem = va_arg(args, LangElement* );
+         AssertFatal( elem, "NULL arguement." );
+         mElemList.push_back( elem );
+         lastEntry++;
+         continue;
+      }
+
+      char * newStr = new char[diff];
+
+      dMemcpy( (void*)newStr, lastEntry, diff );
+      newStr[diff-1] = '\0';
+
+      lastEntry = str + 1;
+
+      mElemList.push_back( new EchoOp( newStr ) );
+
+      // store langElement
+      LangElement *elem = va_arg(args, LangElement* );
+      AssertFatal( elem, "NULL argument." );
+      mElemList.push_back( elem );
+   }
+
+   va_end( args );
+}
+
+//--------------------------------------------------------------------------
+// Print
+//--------------------------------------------------------------------------
+void GenOp::print( Stream &stream )
+{
+   for( U32 i=0; i<mElemList.size(); i++ )
+   {
+      mElemList[i]->print( stream );
+   }
+}