struct coordinates coordinates_of_square(unsigned int square_index) {
struct tetromino tetromino = tetrominos[current_shape.index];
Point topLeftCorner = tetromino.coords[square_index];
Point center = tetromino.rotation_center;
int oy = getAbscissa(topLeftCorner);
int ox = getOrdinate(topLeftCorner);
int cy = getAbscissa(center);
int cx = getOrdinate(center);
struct coordinates result;
switch (current_shape.rotation_angle) {
case ANGLE_0:
result.column = ox;
result.row = oy;
break;
case ANGLE_90:
result.column = oy;
result.row = cx - ox;
break;
case ANGLE_180:
result.column = cx - ox;
result.row = cy - oy;
break;
case ANGLE_270:
result.column = cy - oy;
result.row = ox;
break;
}
result.column += current_shape.column_index;
result.row += current_shape.row_index;
return result;
}
/* Is */ {IND, IND, IND, IND, MDEF, IND, IND, IND, CIND, CIND, CIND, MIND } // NOLINT
};
// Special cases:
// * when a dynamic defined symbol meets a dynamic weak defined symbol, act
// noting.
// * when a undefined symbol meets a dynamic defined symbol, override by
// dynamic defined first, then recover back to undefined symbol later.
// * when a dynamic defined symbol meets a undefined symbol or a weak
// undefined symbol, do not override, instead of marking.
// * When a undefined symbol meets a dynamic defined symbol or a weak
// undefined symbol meets a dynamic defined symbol, should override.
// * When a common symbol meets a weak common symbol, adjust the size of
// common symbol.
unsigned int row = getOrdinate(pNew);
unsigned int col = getOrdinate(pOld);
bool cycle = false;
pOverride = false;
ResolveInfo* old = &pOld;
LinkAction action;
do {
cycle = false;
action = link_action[row][col];
switch (action) {
case FAIL: { /* abort. */
fatal(diag::fail_sym_resolution) << __FILE__ << __LINE__
<< "*****@*****.**";
return false;
