stdlib/public/core/StrideMirrors.swift.gyb

//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2016 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 [['StrideTo','from','to','by'],['StrideThrough','from','through','by']]:
%   MirrorDecl = gyb.executeTemplate(TMirrorDecl,introspecteeType=Self[0],genericArgs=['T'],genericConstraints={'T':'Strideable'})
%   MirrorConformance = gyb.executeTemplate(TMirrorConformance,introspecteeType=Self[0],genericArgs=['T'],genericConstraints={'T':'Strideable'})
%   MirrorBoilerplate = gyb.executeTemplate(TMirrorBoilerplate,introspecteeType=Self[0],genericArgs=['T'],genericConstraints={'T':'Strideable'})

${MirrorDecl} {
  ${MirrorBoilerplate}

    var count: Int { return 3 }

    subscript(i: Int) -> (String, _MirrorType) {
      _precondition(i >= 0 && i < count, "_MirrorType access out of bounds")
      switch i {
      case 0: return ("${Self[1]}",_reflect(_value.start))
      case 1: return ("${Self[2]}",_reflect(_value.end))
      case 2: fallthrough
      default: return ("${Self[3]}",_reflect(_value.stride))
      }
    }

    var summary: String { return "" }

    var quickLookObject: PlaygroundQuickLook? { return nil }
}

${MirrorConformance}