source: trunk/orbital/gun-parser.y @ 1519 Tweet

%{
//
// Orbital
//
// Copyright: (c) 2009-2012 Cédric Lecacheur <jordx@free.fr>
//            (c) 2009-2012 Benjamin Huet <huet.benjamin@gmail.com>
//            (c) 2012 Sam Hocevar <sam@hocevar.net>
//

#if defined HAVE_CONFIG_H
#   include "config.h"
#endif

#include "core.h"
#include "loldebug.h"

using namespace lol;

#include "../gun.h"

#include <string>
%}

%require "2.3"
%debug
%defines
%skeleton "lalr1.cc"
%name-prefix="orbital"
%define parser_class_name "GunParser"
%locations
%parse-param { class GunCompiler& gc }
%error-verbose

%union
{
    float fval;
    struct { float f0, f1, f2, f3, f4, f5, f6, f7; } args;
}

%start gun_description

%token T_AI
%token T_PAI
%token T_CA
%token T_SA
%token T_TIM
%token T_SO
%token T_RD
%token T_SPD
%token T_MODA
%token T_MODB
%token T_FFB
%token T_FFP
%token T_FB
%token T_FP
%token T_SK
%token T_LOOP

%token T_END 0

%token <fval> NUMBER

%type <fval> number
%type <args> args1 args2 args3

%{
#include "../gun-compiler.h"

#undef yylex
#define yylex gc.m_lexer->lex
%}

%%

gun_description:
    gun_command_list T_END
    ;

gun_command_list:
    gun_command
  | gun_command_list ',' gun_command
    ;

gun_command:
    T_AI            { gc.m_gun.m_angle = gc.m_gun.AimActor(); }
  | T_PAI args1     { gc.m_gun.PreAimActor($2.f0); }
  | T_CA args1      { gc.m_gun.m_pre_aim = $2.f0; }
  | T_SA args1      { gc.m_gun.m_angle = $2.f0; }
  | T_TIM args1     { gc.m_gun.m_round_duration = $2.f0; }
  | T_SO args1      { gc.m_gun.m_angle_offset = $2.f0; }
  | T_RD args1      { gc.m_gun.m_radius = $2.f0; }
  | T_SPD args1     { gc.m_gun.m_shoot_speed = $2.f0; }
  | T_MODA args3    { /* FIXME: 1st modifier */ }
  | T_MODB args3    { /* FIXME: 2nd modifier */ }
  | T_FFB args1     { for (int i = 0; i < (int)$2.f0; i++) gc.m_gun.Shoot(1);
                      gc.m_gun.m_shoot_type = 1;
                      gc.m_gun.m_round_timer = gc.m_gun.m_round_duration; }
  | T_FFP args1     { for (int i = 0; i < (int)$2.f0; i++) gc.m_gun.Shoot(0);
                      gc.m_gun.m_shoot_type = 0;
                      gc.m_gun.m_round_timer = gc.m_gun.m_round_duration; }
  | T_FB args1      { gc.m_gun.Shoot(1); gc.m_gun.m_nbshoots = (int)$2.f0 - 1;
                      gc.m_gun.m_shoot_type = 1;
                      gc.m_gun.m_round_timer = gc.m_gun.m_round_duration; }
  | T_FP args1      { gc.m_gun.Shoot(0); gc.m_gun.m_nbshoots = (int)$2.f0 - 1;
                      gc.m_gun.m_shoot_type = 0;
                      gc.m_gun.m_round_timer = gc.m_gun.m_round_duration; }
  | T_SK args1      { gc.m_gun.m_round_timer = gc.m_gun.m_round_duration * $2.f0;
                      /* FIXME: modifiers */ }
  | T_LOOP          { /* FIXME: loops */ }
    ;

args1: number { $$.f0 = $1; } ;
args2: args1 ',' number { $$ = $1; $$.f1 = $3; } ;
args3: args2 ',' number { $$ = $1; $$.f2 = $3; } ;

number:
    NUMBER       { $$ = $1; }
  | '-' number   { $$ = -$2; }
    ;

%%

void orbital::GunParser::error(const GunParser::location_type& l,
                               const std::string& m)
{
    gc.Error(l, m);
}