Files
swift-mirror/stdlib/core/StringInterpolation.swift.gyb
Doug Gregor df33350219 Switch string interpolation protocol over to initializer requirements.
With this, we're now using initializer requirements rather than
"convertFromXXX" requirements everywhere, addressing the rest of
rdar://problem/18154091. r22176 eliminated the performance penalty
that prevented this change from sticking earlier.



Swift SVN r22177
2014-09-22 20:17:55 +00:00

54 lines
1.2 KiB
Swift

//===--- StringInterpolation.swift.gyb - String Interpolation --*- swift -*-==//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2015 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See http://swift.org/LICENSE.txt for license information
// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
%{
from SwiftIntTypes import *
# Number of bits in the Builtin.Word type
word_bits = int(CMAKE_SIZEOF_VOID_P) * 8
StreamableTypes = [
'String',
'Character',
'UnicodeScalar',
]
PrintableTypes = [
'Bool',
'Float32',
'Float64'
]
for int_ty in all_integer_types(word_bits):
PrintableTypes.append(int_ty.stdlib_name)
}%
extension String : StringInterpolationConvertible {
% for Type in StreamableTypes:
public init(stringInterpolationSegment expr: ${Type}) {
self = _toStringReadOnlyStreamable(expr)
}
% end
% for Type in PrintableTypes:
public init(stringInterpolationSegment expr: ${Type}) {
self = _toStringReadOnlyPrintable(expr)
}
% end
}
// ${'Local Variables'}:
// eval: (read-only-mode 1)
// End: