Files
swift-mirror/stdlib/core/StringUTFViewsMirrors.swift.gyb
Dmitri Hrybenko 56473c34cd stdlib: change out-of-bounds subscripting traps on mirrors to be
_preconditionFailure()s.  Some of these checks are clearly redundant (for
example, the check of array subscript), but since we have no tests for
these traps (and reflection is not fast in general), I prefer to keep this
transformation as straightforward as possible.


Swift SVN r20971
2014-08-03 18:42:53 +00:00

39 lines
1.5 KiB
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//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
%import gyb
%TMirrorDecl = gyb.parseTemplate("../common/MirrorDecl.gyb")
%TMirrorConformance = gyb.parseTemplate("../common/MirrorConformance.gyb")
%TMirrorBoilerplate = gyb.parseTemplate("../common/MirrorBoilerplate.gyb")
% for Self in ['UTF8View','UTF16View']:
% MirrorDecl = gyb.executeTemplate(TMirrorDecl,introspecteeType=Self)
% MirrorConformance = gyb.executeTemplate(TMirrorConformance,introspecteeType=Self)
% MirrorBoilerplate = gyb.executeTemplate(TMirrorBoilerplate,introspecteeType=Self)
extension String {
${MirrorDecl} {
${MirrorBoilerplate}
var count: Int { return distance(_value.startIndex,_value.endIndex) }
subscript(i: Int) -> (String,MirrorType) {
_precondition(i >= 0 && i < count, "MirrorType access out of bounds")
return ("[\(i)]", reflect(self[i]))
}
var summary: String { return String(_value._core) }
var quickLookObject: QuickLookObject? { return .Some(.Text(summary)) }
}
}