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factor out integer argument processing

This commit is contained in:
devsaurus 2015-02-03 00:29:11 +01:00
parent 18a44e7c60
commit 6dfb82dbba
1 changed files with 43 additions and 129 deletions
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172
app/modules/u8g.c
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@ -28,6 +28,7 @@ const static u8g_fntpgm_uint8_t *font_array[] =
}; };
// helper function: retrieve and check userdata argument
static lu8g_userdata_t *get_lud( lua_State *L ) static lu8g_userdata_t *get_lud( lua_State *L )
{ {
lu8g_userdata_t *lud = (lu8g_userdata_t *)luaL_checkudata(L, 1, "u8g.display"); lu8g_userdata_t *lud = (lu8g_userdata_t *)luaL_checkudata(L, 1, "u8g.display");
@ -35,6 +36,15 @@ static lu8g_userdata_t *get_lud( lua_State *L )
return lud; return lud;
} }
// helper function: retrieve given number of integer arguments
static void lu8g_get_int_args( lua_State *L, uint8_t stack, uint8_t num, u8g_uint_t *args)
{
while (num-- > 0)
{
*args++ = luaL_checkinteger( L, stack++ );
}
}
// Lua: u8g.setFont( self, font ) // Lua: u8g.setFont( self, font )
static int lu8g_setFont( lua_State *L ) static int lu8g_setFont( lua_State *L )
@ -98,32 +108,27 @@ static int lu8g_generic_drawStr( lua_State *L, uint8_t rot )
if ((lud = get_lud( L )) == NULL) if ((lud = get_lud( L )) == NULL)
return 0; return 0;
uint8_t stack = 2;
u8g_uint_t x = luaL_checkinteger( L, stack ); u8g_uint_t args[2];
stack++; lu8g_get_int_args( L, 2, 2, args );
u8g_uint_t y = luaL_checkinteger( L, stack ); const char *s = luaL_checkstring( L, (1+2) + 1 );
stack++;
const char *s = luaL_checkstring( L, stack );
stack++;
if (s == NULL) if (s == NULL)
return 0; return 0;
switch (rot) switch (rot)
{ {
case 1: case 1:
lua_pushinteger( L, u8g_DrawStr90( &(lud->u8g), x, y, s ) ); lua_pushinteger( L, u8g_DrawStr90( &(lud->u8g), args[0], args[1], s ) );
break; break;
case 2: case 2:
lua_pushinteger( L, u8g_DrawStr180( &(lud->u8g), x, y, s ) ); lua_pushinteger( L, u8g_DrawStr180( &(lud->u8g), args[0], args[1], s ) );
break; break;
case 3: case 3:
lua_pushinteger( L, u8g_DrawStr270( &(lud->u8g), x, y, s ) ); lua_pushinteger( L, u8g_DrawStr270( &(lud->u8g), args[0], args[1], s ) );
break; break;
default: default:
lua_pushinteger( L, u8g_DrawStr( &(lud->u8g), x, y, s ) ); lua_pushinteger( L, u8g_DrawStr( &(lud->u8g), args[0], args[1], s ) );
break; break;
} }
@ -170,21 +175,11 @@ static int lu8g_drawLine( lua_State *L )
if ((lud = get_lud( L )) == NULL) if ((lud = get_lud( L )) == NULL)
return 0; return 0;
uint8_t stack = 2;
u8g_uint_t x1 = luaL_checkinteger( L, stack ); u8g_uint_t args[4];
stack++; lu8g_get_int_args( L, 2, 4, args );
u8g_uint_t y1 = luaL_checkinteger( L, stack ); u8g_DrawLine( &(lud->u8g), args[0], args[1], args[2], args[3] );
stack++;
u8g_uint_t x2 = luaL_checkinteger( L, stack );
stack++;
u8g_uint_t y2 = luaL_checkinteger( L, stack );
stack++;
u8g_DrawLine( &(lud->u8g), x1, y1, x2, y2 );
return 0; return 0;
} }
@ -196,27 +191,11 @@ static int lu8g_drawTriangle( lua_State *L )
if ((lud = get_lud( L )) == NULL) if ((lud = get_lud( L )) == NULL)
return 0; return 0;
uint8_t stack = 2;
u8g_uint_t x0 = luaL_checkinteger( L, stack ); u8g_uint_t args[6];
stack++; lu8g_get_int_args( L, 2, 6, args );
u8g_uint_t y0 = luaL_checkinteger( L, stack ); u8g_DrawTriangle( &(lud->u8g), args[0], args[1], args[2], args[3], args[4], args[5] );
stack++;
u8g_uint_t x1 = luaL_checkinteger( L, stack );
stack++;
u8g_uint_t y1 = luaL_checkinteger( L, stack );
stack++;
u8g_uint_t x2 = luaL_checkinteger( L, stack );
stack++;
u8g_uint_t y2 = luaL_checkinteger( L, stack );
stack++;
u8g_DrawTriangle( &(lud->u8g), x0, y0, x1, y1, x2, y2 );
return 0; return 0;
} }
@ -228,21 +207,11 @@ static int lu8g_drawBox( lua_State *L )
if ((lud = get_lud( L )) == NULL) if ((lud = get_lud( L )) == NULL)
return 0; return 0;
uint8_t stack = 2;
u8g_uint_t x = luaL_checkinteger( L, stack ); u8g_uint_t args[4];
stack++; lu8g_get_int_args( L, 2, 4, args );
u8g_uint_t y = luaL_checkinteger( L, stack ); u8g_DrawBox( &(lud->u8g), args[0], args[1], args[2], args[3] );
stack++;
u8g_uint_t w = luaL_checkinteger( L, stack );
stack++;
u8g_uint_t h = luaL_checkinteger( L, stack );
stack++;
u8g_DrawBox( &(lud->u8g), x, y, w, h );
return 0; return 0;
} }
@ -254,24 +223,11 @@ static int lu8g_drawRBox( lua_State *L )
if ((lud = get_lud( L )) == NULL) if ((lud = get_lud( L )) == NULL)
return 0; return 0;
uint8_t stack = 2;
u8g_uint_t x = luaL_checkinteger( L, stack ); u8g_uint_t args[5];
stack++; lu8g_get_int_args( L, 2, 5, args );
u8g_uint_t y = luaL_checkinteger( L, stack ); u8g_DrawRBox( &(lud->u8g), args[0], args[1], args[2], args[3], args[4] );
stack++;
u8g_uint_t w = luaL_checkinteger( L, stack );
stack++;
u8g_uint_t h = luaL_checkinteger( L, stack );
stack++;
u8g_uint_t r = luaL_checkinteger( L, stack );
stack++;
u8g_DrawRBox( &(lud->u8g), x, y, w, h, r );
return 0; return 0;
} }
@ -283,21 +239,11 @@ static int lu8g_drawFrame( lua_State *L )
if ((lud = get_lud( L )) == NULL) if ((lud = get_lud( L )) == NULL)
return 0; return 0;
uint8_t stack = 2;
u8g_uint_t x = luaL_checkinteger( L, stack ); u8g_uint_t args[4];
stack++; lu8g_get_int_args( L, 2, 4, args );
u8g_uint_t y = luaL_checkinteger( L, stack ); u8g_DrawFrame( &(lud->u8g), args[0], args[1], args[2], args[3] );
stack++;
u8g_uint_t w = luaL_checkinteger( L, stack );
stack++;
u8g_uint_t h = luaL_checkinteger( L, stack );
stack++;
u8g_DrawFrame( &(lud->u8g), x, y, w, h );
return 0; return 0;
} }
@ -309,27 +255,11 @@ static int lu8g_drawRFrame( lua_State *L )
if ((lud = get_lud( L )) == NULL) if ((lud = get_lud( L )) == NULL)
return 0; return 0;
uint8_t stack = 2;
if (lud == NULL) u8g_uint_t args[5];
return 0; lu8g_get_int_args( L, 2, 5, args );
u8g_uint_t x = luaL_checkinteger( L, stack ); u8g_DrawRFrame( &(lud->u8g), args[0], args[1], args[2], args[3], args[4] );
stack++;
u8g_uint_t y = luaL_checkinteger( L, stack );
stack++;
u8g_uint_t w = luaL_checkinteger( L, stack );
stack++;
u8g_uint_t h = luaL_checkinteger( L, stack );
stack++;
u8g_uint_t r = luaL_checkinteger( L, stack );
stack++;
u8g_DrawRFrame( &(lud->u8g), x, y, w, h, r );
return 0; return 0;
} }
@ -341,21 +271,13 @@ static int lu8g_drawDisc( lua_State *L )
if ((lud = get_lud( L )) == NULL) if ((lud = get_lud( L )) == NULL)
return 0; return 0;
uint8_t stack = 2;
u8g_uint_t x0 = luaL_checkinteger( L, stack ); u8g_uint_t args[3];
stack++; lu8g_get_int_args( L, 2, 3, args );
u8g_uint_t y0 = luaL_checkinteger( L, stack ); u8g_uint_t opt = luaL_optinteger( L, (1+3) + 1, U8G_DRAW_ALL );
stack++;
u8g_uint_t rad = luaL_checkinteger( L, stack ); u8g_DrawDisc( &(lud->u8g), args[0], args[1], args[2], opt );
stack++;
u8g_uint_t opt = luaL_optinteger( L, stack, U8G_DRAW_ALL );
stack++;
u8g_DrawDisc( &(lud->u8g), x0, y0, rad, opt );
return 0; return 0;
} }
@ -367,21 +289,13 @@ static int lu8g_drawCircle( lua_State *L )
if ((lud = get_lud( L )) == NULL) if ((lud = get_lud( L )) == NULL)
return 0; return 0;
uint8_t stack = 2;
u8g_uint_t x0 = luaL_checkinteger( L, stack ); u8g_uint_t args[3];
stack++; lu8g_get_int_args( L, 2, 3, args );
u8g_uint_t y0 = luaL_checkinteger( L, stack ); u8g_uint_t opt = luaL_optinteger( L, (1+3) + 1, U8G_DRAW_ALL );
stack++;
u8g_uint_t rad = luaL_checkinteger( L, stack ); u8g_DrawCircle( &(lud->u8g), args[0], args[1], args[2], opt );
stack++;
u8g_uint_t opt = luaL_optinteger( L, stack, U8G_DRAW_ALL );
stack++;
u8g_DrawCircle( &(lud->u8g), x0, y0, rad, opt );
return 0; return 0;
} }