go/gofrontend/expressions.cc

159       // Assigning nil to a slice.
160       Expression* nil = Expression::make_nil(location);
162       return Expression::make_slice_value(lhs_type, nil, zero, zero, location);
212   // When setting an interface to nil, we just set both fields to
217       Expression* nil = Expression::make_nil(location);
218       return Expression::make_interface_value(lhs_type, nil, nil, location);
292   Expression* nil = Expression::make_nil(location);
295       Expression::make_binary(OPERATOR_EQEQ, mtable, nil, location);
296   return Expression::make_conditional(eq, nil, descriptor, location);
325   // NULL for a nil interface.
333       // A type assertion fails when converting a nil interface.
347       // type assertion converting nil will always succeed.
1668 // This is used when indexing, bound-checking, or nil checking a string.
2920 // The nil value.
2959   { exp->write_c_string("nil"); }
2963   { ast_dump_context->ostream() << "nil"; }
2966 // Import a nil expression.
2971   imp->require_c_string("nil");
2975 // Make a nil expression.
3231   // a constant.  For example, []byte(nil).
3722 // Flatten expression if a nil check must be performed and create temporary
4220 	// need to check for nil.  We don't bother to check for small
4221 	// structs because we expect the system to crash on a nil
4223 	// expression is being taken, we must always check for nil.
4233                 Bexpression* nil =
4237                                                        nil, loc);
5565 	  this->report_error(_("invalid comparison of nil with nil"));
6184 	  // An interface is nil if the first field is nil.
6213 // add nil checks.  Introduce a temporary variable so that those nil
6421 // Return an expression to check *REF for nil while dereferencing
6510   // See whether the expression or any embedded pointers are nil.
6853 	  // nil empty interface.
6869 	      error_at(args->front()->location(), "use of untyped nil");
6947 		Expression* nil = Expression::make_nil(loc);
6949 		*pa = Expression::make_slice_value(at, nil, zero, zero, loc);
8305 	Expression* nil = Expression::make_nil(location);
8306 	nil = Expression::convert_for_assignment(gogo, empty, nil, location);
8316             Expression::make_conditional(arg, recover, nil, location);
9747       // pointer is nil.
9899   // index, or it may be a nil expression for the length of the array.
10409   // or it may be a nil expression for the length of the string.
10665 // dereferenced and checked for nil, so flatten into a temporary to avoid
14144 // This is used when indexing, bound-checking, or nil checking a slice.
15223   else if (imp->match_c_string("nil"))