blob: f9ff50713bd2250de89edd352ed7f74c518101ab [file] [log] [blame]
/**
* projectM -- Milkdrop-esque visualisation SDK
* Copyright (C)2003-2007 projectM Team
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
* See 'LICENSE.txt' included within this release
*
*/
/**
* $Id$
*
* MilkdropPreset parser
*
* $Log$
*/
#ifndef _PARSER_H
#define _PARSER_H
//#define PARSE_DEBUG 2
#define PARSE_DEBUG 0
#include <stdio.h>
#include "Expr.hpp"
#include "PerFrameEqn.hpp"
#include "InitCond.hpp"
#include "MilkdropPreset.hpp"
/* Strings that prefix (and denote the type of) equations */
#define PER_FRAME_STRING "per_frame_"
#define PER_FRAME_STRING_LENGTH 10
#define PER_PIXEL_STRING "per_pixel_"
#define PER_PIXEL_STRING_LENGTH 10
#define PER_FRAME_INIT_STRING "per_frame_init_"
#define PER_FRAME_INIT_STRING_LENGTH 15
#define WAVECODE_STRING "wavecode_"
#define WAVECODE_STRING_LENGTH 9
#define WAVE_STRING "wave_"
#define WAVE_STRING_LENGTH 5
#define PER_POINT_STRING "per_point"
#define PER_POINT_STRING_LENGTH 9
#define PER_FRAME_STRING_NO_UNDERSCORE "per_frame"
#define PER_FRAME_STRING_NO_UNDERSCORE_LENGTH 9
#define SHAPECODE_STRING "shapecode_"
#define SHAPECODE_STRING_LENGTH 10
#define WARP_STRING "warp_"
#define WARP_STRING_LENGTH 5
#define COMPOSITE_STRING "comp_"
#define COMPOSITE_STRING_LENGTH 5
#define SHAPE_STRING "shape_"
#define SHAPE_STRING_LENGTH 6
#define SHAPE_INIT_STRING "init"
#define SHAPE_INIT_STRING_LENGTH 4
#define WAVE_INIT_STRING "init"
#define WAVE_INIT_STRING_LENGTH 4
#include <set>
typedef enum {
UNSET_LINE_MODE,
PER_FRAME_LINE_MODE,
PER_PIXEL_LINE_MODE,
PER_FRAME_INIT_LINE_MODE,
INIT_COND_LINE_MODE,
CUSTOM_WAVE_PER_POINT_LINE_MODE,
CUSTOM_WAVE_PER_FRAME_LINE_MODE,
CUSTOM_WAVE_WAVECODE_LINE_MODE,
CUSTOM_SHAPE_SHAPECODE_LINE_MODE,
CUSTOM_SHAPE_PER_FRAME_LINE_MODE,
CUSTOM_SHAPE_PER_FRAME_INIT_LINE_MODE,
CUSTOM_WAVE_PER_FRAME_INIT_LINE_MODE
} line_mode_t;
/** Token enumeration type */
typedef enum {
tEOL, /* end of a line, usually a '/n' or '/r' */
tEOF, /* end of file */
tLPr, /* ( */
tRPr, /* ) */
tLBr, /* [ */
tRBr, /* ] */
tEq, /* = */
tPlus, /* + */
tMinus, /* - */
tMult, /* * */
tMod, /* % */
tDiv, /* / */
tOr, /* | */
tAnd, /* & */
tComma, /* , */
tPositive, /* + as a prefix operator */
tNegative, /* - as a prefix operator */
tSemiColon, /* ; */
tStringTooLong, /* special token to indicate an invalid string length */
tStringBufferFilled /* the string buffer for this line is maxed out */
} token_t;
class CustomShape;
class CustomWave;
class GenExpr;
class InfixOp;
class PerFrameEqn;
class MilkdropPreset;
class TreeExpr;
class Parser {
public:
static std::string lastLinePrefix;
static line_mode_t line_mode;
static CustomWave *current_wave;
static CustomShape *current_shape;
static int string_line_buffer_index;
static char string_line_buffer[STRING_LINE_SIZE];
static unsigned int line_count;
static int per_frame_eqn_count;
static int per_frame_init_eqn_count;
static int last_custom_wave_id;
static int last_custom_shape_id;
static char last_eqn_type[MAX_TOKEN_SIZE];
static int last_token_size;
static bool tokenWrapAroundEnabled;
static PerFrameEqn *parse_per_frame_eqn( std::istream & fs, int index,
MilkdropPreset * preset);
static int parse_per_pixel_eqn( std::istream & fs, MilkdropPreset * preset,
char * init_string);
static InitCond *parse_init_cond( std::istream & fs, char * name, MilkdropPreset * preset );
static int parse_preset_name( std::istream & fs, char * name );
static int parse_top_comment( std::istream & fs );
static int parse_line( std::istream & fs, MilkdropPreset * preset );
static int get_string_prefix_len(char * string);
static TreeExpr * insert_gen_expr(GenExpr * gen_expr, TreeExpr ** root);
static TreeExpr * insert_infix_op(InfixOp * infix_op, TreeExpr ** root);
static token_t parseToken(std::istream & fs, char * string);
static GenExpr ** parse_prefix_args(std::istream & fs, int num_args, MilkdropPreset * preset);
static GenExpr * parse_infix_op(std::istream & fs, token_t token, TreeExpr * tree_expr, MilkdropPreset * preset);
static GenExpr * parse_sign_arg(std::istream & fs);
static int parse_float(std::istream & fs, float * float_ptr);
static int parse_int(std::istream & fs, int * int_ptr);
static int insert_gen_rec(GenExpr * gen_expr, TreeExpr * root);
static int insert_infix_rec(InfixOp * infix_op, TreeExpr * root);
static GenExpr * parse_gen_expr(std::istream & fs, TreeExpr * tree_expr, MilkdropPreset * preset);
static PerFrameEqn * parse_implicit_per_frame_eqn(std::istream & fs, char * param_string, int index, MilkdropPreset * preset);
static InitCond * parse_per_frame_init_eqn(std::istream & fs, MilkdropPreset * preset, std::map<std::string,Param*> * database);
static int parse_wavecode_prefix(char * token, int * id, char ** var_string);
static int parse_wavecode(char * token, std::istream & fs, MilkdropPreset * preset);
static int parse_wave_prefix(char * token, int * id, char ** eqn_string);
static int parse_wave_helper(std::istream & fs, MilkdropPreset * preset, int id, char * eqn_type, char * init_string);
static int parse_shapecode(char * eqn_string, std::istream & fs, MilkdropPreset * preset);
static int parse_shapecode_prefix(char * token, int * id, char ** var_string);
static void parse_string_block(std::istream & fs, std::string * out_string);
static bool scanForComment(std::istream & fs);
static int parse_wave(char * eqn_string, std::istream & fs, MilkdropPreset * preset);
static int parse_shape(char * eqn_string, std::istream & fs, MilkdropPreset * preset);
static int parse_shape_prefix(char * token, int * id, char ** eqn_string);
static void readStringUntil(std::istream & fs, std::string * out_buffer, bool wrapAround = true, const std::set<char> & skipList = std::set<char>()) ;
static int string_to_float(char * string, float * float_ptr);
static int parse_shape_per_frame_init_eqn(std::istream & fs, CustomShape * custom_shape, MilkdropPreset * preset);
static int parse_shape_per_frame_eqn(std::istream & fs, CustomShape * custom_shape, MilkdropPreset * preset);
static int parse_wave_per_frame_eqn(std::istream & fs, CustomWave * custom_wave, MilkdropPreset * preset);
static bool wrapsToNextLine(const std::string & str);
};
#endif /** !_PARSER_H */