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//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// * Neither the name of NVIDIA CORPORATION nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
// OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Copyright (c) 2008-2018 NVIDIA Corporation. All rights reserved.
// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.
#ifndef ODBLOCK_H
#define ODBLOCK_H
/*----------------------------------------------------------------------------*\
|
| Ageia PhysX Technology
|
| www.ageia.com
|
\*----------------------------------------------------------------------------*/
/*
ObjectDescription Scripts
--------------------------
ODScript = Block
Statement = Block | Terminal
Block = indent '{' {Statement} '}'
Terminal = ident ';'
Comments:
# = line comment
/ * * / = multiline comment. The / character cannot be used in identifiers.
idents may be enclosed in quotes, and should be unique to facilitate searching.
In a typical application, program would look for known Blocks, and read out its user set terminal(s).
Particular users define semantics:
SHIPFILE
{
Shipname
{
Client
{
ShipModel
{
MeshFile
{
Filename;
lodlevels;
}
Texturefile
{
Filename;
}
}
CockpitModel
{
...
}
}
Server
{
...
}
}
}
*/
#include <stdio.h>
#include "FrameworkFoundation.h"
#include "SampleArray.h"
#define OD_MAXID 30 //max identifier length
class ODBlock;
typedef SampleFramework::Array<ODBlock *> ODBlockList;
class ODBlock
/*-------------------------\
| Block = indent '{' {Statement} '}'
| Terminals are simply empty blocks
|
|
\-------------------------*/
{
class ODSyntaxError
{
public:
enum Error { ODSE_UNEX_QUOTE, ODSE_UNEX_OBRACE, ODSE_UNEX_CBRACE, ODSE_UNEX_LITERAL,ODSE_UNEX_EOF,ODSE_ENC_UNKNOWN };
private:
Error err;
public:
ODSyntaxError(Error e) {err = e;}
const char * asString();
};
enum State {WAIT_IDENT,IDENT,WAIT_BLOCK,BLOCK};
char identifier[128];
unsigned identSize; //size of above array.
bool bTerminal;
ODBlockList subBlocks;
ODBlockList::Iterator termiter; //iterator for reading terminals
public:
ODBlock(); //create a new one
~ODBlock();
bool loadScript(SampleFramework::File* fp);
bool saveScript(SampleFramework::File* writeP, bool bQuote);//saves this block to scipt file. set bQuote == true if you want to machine parse output.
//reading:
const char * ident();
inline unsigned numSubBlocks() {return subBlocks.size(); }//returns number of sub blocks
bool isTerminal(); //resets to first statement returns false if its a terminal == no contained Blocks
//writing:
void ident(const char *); //identifier of the block
void addStatement(ODBlock &);
//queries: return true in success
ODBlock * getBlock(const char * identifier,bool bRecursiveSearch=false); //returns block with given identifier, or NULL.
void reset(); //prepares to get first terminal or sub block of current block
//getting terminals:
bool moreTerminals(); //returns true if more terminals are available
char * nextTerminal(); //returns a pointer to the next immediate terminal child of current block's identifier string.
//getting terminals:
bool moreSubBlocks(); //returns true if more sub blocks (including terminals) are available
ODBlock * nextSubBlock(); //returns a pointer to the next sub block.
// hig level macro functs, return true on success: (call for obj containing:)
bool getBlockInt(const char * ident, int* p = 0, unsigned count = 1); //reads blocks of form: ident{ 123;}
bool getBlockU32(const char * ident, physx::PxU32* p = 0, unsigned count = 1); //reads blocks of form: ident{ 123;}
bool getBlockString(const char * ident, const char **); //of form: ident{abcdef;}
bool getBlockStrings(const char * ident, const char **, unsigned count); //of form: ident{abcdef; abcdef; ...}
bool getBlockFloat(const char * ident, float * p = 0); //of form: ident{123.456;}
bool getBlockFloats(const char * ident, float *, unsigned count);//form: ident{12.3; 12.3; 12.3; ... };
bool addBlockFloats(const char * ident, float *, unsigned count);
bool addBlockInts(const char * ident, int *, unsigned count);
//errors
static const char * lastError;
};
#endif //ODBLOCK_H
|