ソースコードから読み解く - Quick はどのように実装されているのか？/quick-code-reading

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ۙگ ⁃ J04%$Ͱ෼ൃද ⁃ ੔ମ͸͍͍ͧʂ Copyright (C) DeNA Co.,Ltd. All Rights Reserved. 3 @tobi462ʢτϏʣ Swift 4.2

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ۙگ ⁃ J04%$Ͱ෼ൃද ⁃ ੔ମ͸͍͍ͧʂ Copyright (C) DeNA Co.,Ltd. All Rights Reserved. 4 @tobi462ʢτϏʣ Swift 4.2 ݄ࠒʹ։࠵ʁ

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ൃදεϥΠυ΁ͷϦϯΫ iosdc-cfps.penginmura.tech

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9$5FTUͱ౷߹ • ςετφϏήʔλͰදࣔ • Τϥʔϝοηʔδ΋ͪΌΜͱग़Δ Quick 34QFDΠϯεύΠΞ

Nimble 10 Copyright (C) DeNA Co.,Ltd. All Rights Reserved. ΞαʔγϣϯϥΠϒϥϦ
.BUIDFS"1* 2VJDL͔Β͸ಠཱ Nimble

11 Copyright (C) DeNA Co.,Ltd. All Rights Reserved. import XCTest
import Quick import Nimble class CalcSpec: QuickSpec { override func spec() { describe("calc") { var calc: Calc! beforeEach { calc = Calc() } describe("add") { context("1 + 1") { it("works") { expect(calc.add(1, 1)).to(equal(2)) } } } } } }

import Quick import Nimble class CalcSpec: QuickSpec { override func spec() { describe("calc") { var calc: Calc! beforeEach { calc = Calc() } describe("add") { context("1 + 1") { it("works") { expect(calc.add(1, 1)).to(equal(2)) } } } } } } ςετߏ଄Խͱͯ͠ͷ2VJDL

import Quick import Nimble class CalcSpec: QuickSpec { override func spec() { describe("calc") { var calc: Calc! beforeEach { calc = Calc() } describe("add") { context("1 + 1") { it("works") { expect(calc.add(1, 1)).to(equal(2)) } } } } } } Ξαʔγϣϯͱͯ͠ͷ/JNCMF

17 Copyright (C) DeNA Co.,Ltd. All Rights Reserved. Τϥʔ͕ΤσΟλʹදࣔ Xcode
Quick ͸Α͘Ͱ͖ͯΔͳ͊ Swift ΫϩʔδϟʹΑΔ DSL ΋ૉఢͩ

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͋ΒͨΊͯݟͯΈΔ

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Զͨͪ͸งғؾͰ Quick Λॻ͍͍ͯΔ

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ΤϯτϦϙΠϯτ %4-͔Βͷߏ଄ͷ૊Έཱͯ 9$5FTU͔Βͷݺͼग़͠ Let’s Code Reading !

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9$5FTU 'PVOEBUJPO ࠓ͔Βݟ͍ͯ͘ ϥΠϒϥϦͷؔ܎

import Quick import Nimble class CalcSpec: QuickSpec { override func spec() { describe("calc") { var calc: Calc! beforeEach { calc = Calc() } describe("add") { context("1 + 1") { it("works") { expect(calc.add(1, 1)).to(equal(2)) } } } } } }

import Quick import Nimble class CalcSpec: QuickSpec { override func spec() { describe("calc") { var calc: Calc! beforeEach { calc = Calc() } describe("add") { context("1 + 1") { it("works") { expect(calc.add(1, 1)).to(equal(2)) } } } } } } ࠓճͷαϯϓϧͷ4QFD

import Quick import Nimble class CalcSpec: QuickSpec { override func spec() { describe("calc") { var calc: Calc! beforeEach { calc = Calc() } describe("add") { context("1 + 1") { it("works") { expect(calc.add(1, 1)).to(equal(2)) } } } } } } Ͳ͔͜Βݺ͹Ε͍ͯΔ͔ʁ

import Quick import Nimble class CalcSpec: QuickSpec { override func spec() { describe("calc") { var calc: Calc! beforeEach { calc = Calc() } describe("add") { context("1 + 1") { it("works") { expect(calc.add(1, 1)).to(equal(2)) } } } } } } ਌ΫϥεΛݟͯΈΔ

38 Copyright (C) DeNA Co.,Ltd. All Rights Reserved. #import <XCTest/XCTest.h>
@interface QuickSpec : XCTestCase - (void)spec; @property (class, nonatomic, readonly) QuickSpec *current; @end QuickSpec.h

39 Copyright (C) DeNA Co.,Ltd. All Rights Reserved. #import <XCTest/XCTest.h>
@interface QuickSpec : XCTestCase - (void)spec; @property (class, nonatomic, readonly) QuickSpec *current; @end QuickSpec.h ͍͖ͳΓ Objective-C ʂ Ͱ΋ɺ਺গͳ͍͏ͪͷ1ιʔε

40 Copyright (C) DeNA Co.,Ltd. All Rights Reserved. // QuickSpec.h
#import <XCTest/XCTest.h> @interface QuickSpec : XCTestCase - (void)spec; @property (class, nonatomic, readonly) QuickSpec *current; @end 9$5FTU$BTFΛܧঝ͍ͯ͠Δ QuickSpec.h

41 Copyright (C) DeNA Co.,Ltd. All Rights Reserved. // QuickSpec.m
@implementation QuickSpec + (void)initialize { [QuickConfiguration initialize]; World *world = [World sharedWorld]; [world performWithCurrentExampleGroup:[world rootExampleGroupForSpecClass:self] closure:^{ QuickSpec *spec = [self new]; @try { [spec spec]; } @catch (NSException *exception) { ... } [self testInvocations]; }]; } QuickSpec.m

@implementation QuickSpec + (void)initialize { [QuickConfiguration initialize]; World *world = [World sharedWorld]; [world performWithCurrentExampleGroup:[world rootExampleGroupForSpecClass:self] closure:^{ QuickSpec *spec = [self new]; @try { [spec spec]; } @catch (NSException *exception) { ... } [self testInvocations]; }]; } 0CKFDUJWF$3VOUJNFʹΫϥε͕ ϩʔυ͞Εͨͱ͖ʹݺͼग़͞ΕΔ QuickSpec.m

@implementation QuickSpec + (void)initialize { [QuickConfiguration initialize]; World *world = [World sharedWorld]; [world performWithCurrentExampleGroup:[world rootExampleGroupForSpecClass:self] closure:^{ QuickSpec *spec = [self new]; @try { [spec spec]; } @catch (NSException *exception) { ... } [self testInvocations]; }]; } 8PSMEͷ4JOHMFUPOΛऔಘ͠ ΫϩʔδϟΛ࣮ߦ͠Α͏ͱ͍ͯ͠Δ QuickSpec.m

@implementation QuickSpec + (void)initialize { [QuickConfiguration initialize]; World *world = [World sharedWorld]; [world performWithCurrentExampleGroup:[world rootExampleGroupForSpecClass:self] closure:^{ QuickSpec *spec = [self new]; @try { [spec spec]; } @catch (NSException *exception) { ... } [self testInvocations]; }]; } ͜͜Ͱࣗ਎ͷΠϯελϯεΛੜ੒ͯ͠ TQFDΛ࣮ߦ͍ͯ͠Δʂ QuickSpec.m

@implementation QuickSpec + (void)initialize { [QuickConfiguration initialize]; World *world = [World sharedWorld]; [world performWithCurrentExampleGroup:[world rootExampleGroupForSpecClass:self] closure:^{ QuickSpec *spec = [self new]; @try { [spec spec]; } @catch (NSException *exception) { ... } [self testInvocations]; }]; } ͜͜Ͱࣗ਎ͷΠϯελϯεΛੜ੒ͯ͠ TQFDΛ࣮ߦ͍ͯ͠Δʂ QuickSpec.m spec ͕ݺ͹ΕΔ࢓૊Έ͸ ͳΜͱͳ͘Θ͔ͬͨͧʂ

46 Copyright (C) DeNA Co.,Ltd. All Rights Reserved. ͜͜·Ͱग़͖ͯͨιʔε CalcSpec.swift
QuickSpec.h / m

48 Copyright (C) DeNA Co.,Ltd. All Rights Reserved. class CalcSpec:
QuickSpec { override func spec() { describe("calc") { var calc: Calc! beforeEach { calc = Calc() } describe("add") { context("1 + 1") { it("works") { expect(calc.add(1, 1)).to(equal(2)) } } } } } } CalcSpec.swift

QuickSpec { override func spec() { describe("calc") { var calc: Calc! beforeEach { calc = Calc() } describe("add") { context("1 + 1") { it("works") { expect(calc.add(1, 1)).to(equal(2)) } } } } } } ߏ଄తʹ͸͜͏ͳͬͯΔ CalcSpec.swift beforeEach describe context it describe

QuickSpec { override func spec() { describe("calc") { var calc: Calc! beforeEach { calc = Calc() } describe("add") { context("1 + 1") { it("works") { expect(calc.add(1, 1)).to(equal(2)) } } } } } } ߏ଄తʹ͸͜͏ͳͬͯΔ CalcSpec.swift beforeEach describe context it describe ॱ൪ʹݟ͍ͯ͘

QuickSpec { override func spec() { describe("calc") { var calc: Calc! beforeEach { calc = Calc() } describe("add") { context("1 + 1") { it("works") { expect(calc.add(1, 1)).to(equal(2)) } } } } } } CalcSpec.swift beforeEach describe context it describe

53 Copyright (C) DeNA Co.,Ltd. All Rights Reserved. public func
describe(_ description: String, flags: FilterFlags = [:], closure: () -> Void) { World.sharedWorld.describe(description, flags: flags, closure: closure) } public func context(_ description: String, flags: FilterFlags = [:], closure: () -> Void) { World.sharedWorld.context(description, flags: flags, closure: closure) } public func beforeEach(_ closure: @escaping BeforeExampleClosure) { World.sharedWorld.beforeEach(closure) } DSL.swift

describe(_ description: String, flags: FilterFlags = [:], closure: () -> Void) { World.sharedWorld.describe(description, flags: flags, closure: closure) } public func context(_ description: String, flags: FilterFlags = [:], closure: () -> Void) { World.sharedWorld.context(description, flags: flags, closure: closure) } public func beforeEach(_ closure: @escaping BeforeExampleClosure) { World.sharedWorld.beforeEach(closure) } ... 8PSMEͷγϯάϧτϯʹରͯ͠ ҕৡ͍ͯ͠Δ͚ͩ DSL.swift

55 Copyright (C) DeNA Co.,Ltd. All Rights Reserved. extension World
{ internal func describe(_ description: String, flags: FilterFlags, closure: () -> Void) { let group = ExampleGroup(description: description, flags: flags) currentExampleGroup.appendExampleGroup(group) performWithCurrentExampleGroup(group, closure: closure) } } World+DSL.swift

{ internal func describe(_ description: String, flags: FilterFlags, closure: () -> Void) { let group = ExampleGroup(description: description, flags: flags) currentExampleGroup.appendExampleGroup(group) performWithCurrentExampleGroup(group, closure: closure) } } 8PSMEͷFYUFOTJPO World+DSL.swift

{ internal func describe(_ description: String, flags: FilterFlags, closure: () -> Void) { let group = ExampleGroup(description: description, flags: flags) currentExampleGroup.appendExampleGroup(group) performWithCurrentExampleGroup(group, closure: closure) } } &YBNQMF(SPVQΛੜ੒ͯ͠ World+DSL.swift

{ internal func describe(_ description: String, flags: FilterFlags, closure: () -> Void) { let group = ExampleGroup(description: description, flags: flags) currentExampleGroup.appendExampleGroup(group) performWithCurrentExampleGroup(group, closure: closure) } } ݱࡏͷ&YBNQMF(SPVQʹ௥Ճ͠ World+DSL.swift

{ internal func describe(_ description: String, flags: FilterFlags, closure: () -> Void) { let group = ExampleGroup(description: description, flags: flags) currentExampleGroup.appendExampleGroup(group) performWithCurrentExampleGroup(group, closure: closure) } } ΫϩʔδϟΛ౉࣮ͯ͠ߦ͍ͯ͠Δʂ World+DSL.swift

60 Copyright (C) DeNA Co.,Ltd. All Rights Reserved. final internal
class World: _WorldBase { internal func performWithCurrentExampleGroup(_ group: ExampleGroup, closure: () -> Void) { let previousExampleGroup = currentExampleGroup currentExampleGroup = group closure() currentExampleGroup = previousExampleGroup } } World.swift

class World: _WorldBase { internal func performWithCurrentExampleGroup(_ group: ExampleGroup, closure: () -> Void) { let previousExampleGroup = currentExampleGroup currentExampleGroup = group closure() currentExampleGroup = previousExampleGroup } } ୀආͯ͠ݱࡏͷ&YBNQMF(SPVQΛஔ͖׵͑ World.swift

class World: _WorldBase { internal func performWithCurrentExampleGroup(_ group: ExampleGroup, closure: () -> Void) { let previousExampleGroup = currentExampleGroup currentExampleGroup = group closure() currentExampleGroup = previousExampleGroup } } ΫϩʔδϟΛ࣮ߦ͠ World.swift

class World: _WorldBase { internal func performWithCurrentExampleGroup(_ group: ExampleGroup, closure: () -> Void) { let previousExampleGroup = currentExampleGroup currentExampleGroup = group closure() currentExampleGroup = previousExampleGroup } } ୀආͯͨ͠&YBNQMF(SPVQΛݩʹ໭͍ͯ͠Δ World.swift

class World: _WorldBase { internal func performWithCurrentExampleGroup(_ group: ExampleGroup, closure: () -> Void) { let previousExampleGroup = currentExampleGroup currentExampleGroup = group closure() currentExampleGroup = previousExampleGroup } } ୀආͯͨ͠&YBNQMF(SPVQΛݩʹ໭͍ͯ͠Δ World.swift closure ͬͯͳΜ͚ͩͬʁ ͦ͏͍͑͹

65 Copyright (C) DeNA Co.,Ltd. All Rights Reserved. // World.swift
final internal class World: _WorldBase { internal func performWithCurrentExampleGroup(_ group: ExampleGroup, closure: () -> Void) { let previousExampleGroup = currentExampleGroup currentExampleGroup = group closure() currentExampleGroup = previousExampleGroup } } class CalcSpec: QuickSpec { override func spec() { describe("calc") { var calc: Calc! beforeEach { calc = Calc() } describe("add") { context("1 + 1") { it("works") { expect(calc.add(1, 1)).to(equal(2)) } } } } } }

final internal class World: _WorldBase { internal func performWithCurrentExampleGroup(_ group: ExampleGroup, closure: () -> Void) { let previousExampleGroup = currentExampleGroup currentExampleGroup = group closure() currentExampleGroup = previousExampleGroup } } class CalcSpec: QuickSpec { override func spec() { describe("calc") { var calc: Calc! beforeEach { calc = Calc() } describe("add") { context("1 + 1") { it("works") { expect(calc.add(1, 1)).to(equal(2)) } } } } } } EFTDSJCFͷத਎ͩʂ

final internal class World: _WorldBase { internal func performWithCurrentExampleGroup(_ group: ExampleGroup, closure: () -> Void) { let previousExampleGroup = currentExampleGroup currentExampleGroup = group closure() currentExampleGroup = previousExampleGroup } } class CalcSpec: QuickSpec { override func spec() { describe("calc") { var calc: Calc! beforeEach { calc = Calc() } describe("add") { context("1 + 1") { it("works") { expect(calc.add(1, 1)).to(equal(2)) } } } } } } EFTDSJCFͷத਎ͩʂ ͳΜͱͳ͘ݟ͖͑ͯͨͧʂ

QuickSpec.h / m World+DSL.swift World.swift

describe(_ description: String, flags: FilterFlags = [:], closure: () -> Void) { World.sharedWorld.describe(description, flags: flags, closure: closure) } public func context(_ description: String, flags: FilterFlags = [:], closure: () -> Void) { World.sharedWorld.context(description, flags: flags, closure: closure) } public func beforeEach(_ closure: @escaping BeforeExampleClosure) { World.sharedWorld.beforeEach(closure) } DSL.swift

describe(_ description: String, flags: FilterFlags = [:], closure: () -> Void) { World.sharedWorld.describe(description, flags: flags, closure: closure) } public func context(_ description: String, flags: FilterFlags = [:], closure: () -> Void) { World.sharedWorld.context(description, flags: flags, closure: closure) } public func beforeEach(_ closure: @escaping BeforeExampleClosure) { World.sharedWorld.beforeEach(closure) } DSL.swift ΍͸Γ8PSMEͷγϯάϧτϯʹରͯ͠ Ҡৡ͍ͯ͠Δ͚ͩ

describe(_ description: String, flags: FilterFlags = [:], closure: () -> Void) { World.sharedWorld.describe(description, flags: flags, closure: closure) } public func context(_ description: String, flags: FilterFlags = [:], closure: () -> Void) { World.sharedWorld.context(description, flags: flags, closure: closure) } public func beforeEach(_ closure: @escaping BeforeExampleClosure) { World.sharedWorld.beforeEach(closure) } DSL.swift ΍͸Γ8PSMEͷγϯάϧτϯʹରͯ͠ Ҡৡ͍ͯ͠Δ͚ͩ DSL ෦෼͸ શ෦͜ͷ࢓૊ͬΆ͍ͧʁ

{ internal func beforeEach(_ closure: @escaping BeforeExampleClosure) { guard currentExampleMetadata == nil else { raiseError("...") } currentExampleGroup.hooks.appendBefore(closure) } } World+DSL.swift

{ internal func beforeEach(_ closure: @escaping BeforeExampleClosure) { guard currentExampleMetadata == nil else { raiseError("...") } currentExampleGroup.hooks.appendBefore(closure) } } ݱࡏͷ&YBNQMF(SPVQͷ World+DSL.swift

{ internal func beforeEach(_ closure: @escaping BeforeExampleClosure) { guard currentExampleMetadata == nil else { raiseError("...") } currentExampleGroup.hooks.appendBefore(closure) } } IPPLTʹΫϩʔδϟΛ௥Ճͯ͠Δ World+DSL.swift

{ internal func beforeEach(_ closure: @escaping BeforeExampleClosure) { guard currentExampleMetadata == nil else { raiseError("...") } currentExampleGroup.hooks.appendBefore(closure) } } // ExampleGroup.swift final public class ExampleGroup: NSObject { internal let hooks = ExampleHooks() } // ExampleHooks.swift final internal class ExampleHooks { internal var befores: [BeforeExampleWithMetadataClosure] = [] internal func appendBefore(_ closure: @escaping BeforeExampleClosure) { befores.append { (_: ExampleMetadata) in closure() } } } ExampleGroup.swift / ExampleHooks.swift

{ internal func beforeEach(_ closure: @escaping BeforeExampleClosure) { guard currentExampleMetadata == nil else { raiseError("...") } currentExampleGroup.hooks.appendBefore(closure) } } // ExampleGroup.swift final public class ExampleGroup: NSObject { internal let hooks = ExampleHooks() } // ExampleHooks.swift final internal class ExampleHooks { internal var befores: [BeforeExampleWithMetadataClosure] = [] internal func appendBefore(_ closure: @escaping BeforeExampleClosure) { befores.append { (_: ExampleMetadata) in closure() } } } ഑ྻʹΫϩʔδϟΛBQQFOEͯ͠Δ ExampleGroup.swift / ExampleHooks.swift

{ internal func beforeEach(_ closure: @escaping BeforeExampleClosure) { guard currentExampleMetadata == nil else { raiseError("...") } currentExampleGroup.hooks.appendBefore(closure) } } // ExampleGroup.swift final public class ExampleGroup: NSObject { internal let hooks = ExampleHooks() } // ExampleHooks.swift final internal class ExampleHooks { internal var befores: [BeforeExampleWithMetadataClosure] = [] internal func appendBefore(_ closure: @escaping BeforeExampleClosure) { befores.append { (_: ExampleMetadata) in closure() } } } ഑ྻʹΫϩʔδϟΛBQQFOEͯ͠Δ ExampleGroup.swift / ExampleHooks.swift currentExampleGropup ͕ ͳΜ͔ͩϙΠϯτΈ͍ͨͧʁ

{ internal func beforeEach(_ closure: @escaping BeforeExampleClosure) { guard currentExampleMetadata == nil else { raiseError("...") } currentExampleGroup.hooks.appendBefore(closure) } } World+DSL.swift

{ internal func beforeEach(_ closure: @escaping BeforeExampleClosure) { guard currentExampleMetadata == nil else { raiseError("...") } currentExampleGroup.hooks.appendBefore(closure) } } // World.swift final internal class World: _WorldBase { internal var currentExampleGroup: ExampleGroup! internal func performWithCurrentExampleGroup(_ group: ExampleGroup, closure: () -> Void) { let previousExampleGroup = currentExampleGroup currentExampleGroup = group closure() currentExampleGroup = previousExampleGroup } } World+DSL.swift / World.swift

{ internal func beforeEach(_ closure: @escaping BeforeExampleClosure) { guard currentExampleMetadata == nil else { raiseError("...") } currentExampleGroup.hooks.appendBefore(closure) } } // World.swift final internal class World: _WorldBase { internal var currentExampleGroup: ExampleGroup! internal func performWithCurrentExampleGroup(_ group: ExampleGroup, closure: () -> Void) { let previousExampleGroup = currentExampleGroup currentExampleGroup = group closure() currentExampleGroup = previousExampleGroup } } 8PSME͕͍࣋ͬͯͯ World+DSL.swift / World.swift

{ internal func beforeEach(_ closure: @escaping BeforeExampleClosure) { guard currentExampleMetadata == nil else { raiseError("...") } currentExampleGroup.hooks.appendBefore(closure) } } // World.swift final internal class World: _WorldBase { internal var currentExampleGroup: ExampleGroup! internal func performWithCurrentExampleGroup(_ group: ExampleGroup, closure: () -> Void) { let previousExampleGroup = currentExampleGroup currentExampleGroup = group closure() currentExampleGroup = previousExampleGroup } } ͖ͬ͞Ұ࣌ୀආͯͨ͠΍ͭͩʂ World+DSL.swift / World.swift

{ internal func beforeEach(_ closure: @escaping BeforeExampleClosure) { guard currentExampleMetadata == nil else { raiseError("...") } currentExampleGroup.hooks.appendBefore(closure) } } // World.swift final internal class World: _WorldBase { internal var currentExampleGroup: ExampleGroup! internal func performWithCurrentExampleGroup(_ group: ExampleGroup, closure: () -> Void) { let previousExampleGroup = currentExampleGroup currentExampleGroup = group closure() currentExampleGroup = previousExampleGroup } } ͖ͬ͞Ұ࣌ୀආͯͨ͠΍ͭͩʂ World+DSL.swift / World.swift ͳΜ͔ͩͭͳ͕͖ͬͯͨͧʁ

QuickSpec.h / m World+DSL.swift World.swift ExampleGroup.swift ExampleHooks.swift

QuickSpec { override func spec() { describe("calc") { var calc: Calc! beforeEach { calc = Calc() } describe("add") { context("1 + 1") { it("works") { expect(calc.add(1, 1)).to(equal(2)) } } } } } } CalcSpec.swift beforeEach describe context it describe ͖ͬ͞ݟͨ΍ͭ

{ internal func describe(_ description: String, flags: FilterFlags, closure: () -> Void) { let group = ExampleGroup(description: description, flags: flags) currentExampleGroup.appendExampleGroup(group) performWithCurrentExampleGroup(group, closure: closure) } } ࠶ܝ World+DSL.swift

{ internal func describe(_ description: String, flags: FilterFlags, closure: () -> Void) { let group = ExampleGroup(description: description, flags: flags) currentExampleGroup.appendExampleGroup(group) performWithCurrentExampleGroup(group, closure: closure) } } ৽͍͠&YBNQMF(SPVQΛੜ੒ͯ͠ ݱࡏͷ&YBNQMF(SPVQʹ௥Ճ World+DSL.swift

{ internal func describe(_ description: String, flags: FilterFlags, closure: () -> Void) { let group = ExampleGroup(description: description, flags: flags) currentExampleGroup.appendExampleGroup(group) performWithCurrentExampleGroup(group, closure: closure) } } ৽͍͠&YBNQMF(SPVQΛੜ੒ͯ͠ ݱࡏͷ&YBNQMF(SPVQʹ௥Ճ World+DSL.swift ExampleGroup ͬͯ describe ͷ͜ͱͰ͸ʁ

{ internal func describe(_ description: String, flags: FilterFlags, closure: () -> Void) { let group = ExampleGroup(description: description, flags: flags) currentExampleGroup.appendExampleGroup(group) performWithCurrentExampleGroup(group, closure: closure) } } class CalcSpec: QuickSpec { override func spec() { describe("calc") { var calc: Calc! beforeEach { calc = Calc() } describe("add") { context("1 + 1") { it("works") { expect(calc.add(1, 1)).to(equal(2)) } } } } } }

{ internal func describe(_ description: String, flags: FilterFlags, closure: () -> Void) { let group = ExampleGroup(description: description, flags: flags) currentExampleGroup.appendExampleGroup(group) performWithCurrentExampleGroup(group, closure: closure) } } class CalcSpec: QuickSpec { override func spec() { describe("calc") { var calc: Calc! beforeEach { calc = Calc() } describe("add") { context("1 + 1") { it("works") { expect(calc.add(1, 1)).to(equal(2)) } } } } } } lBEEz ੜ੒ͯ͠Δͷ͸ࠓճͷEFTDSJCFͰ

{ internal func describe(_ description: String, flags: FilterFlags, closure: () -> Void) { let group = ExampleGroup(description: description, flags: flags) currentExampleGroup.appendExampleGroup(group) performWithCurrentExampleGroup(group, closure: closure) } } class CalcSpec: QuickSpec { override func spec() { describe("calc") { var calc: Calc! beforeEach { calc = Calc() } describe("add") { context("1 + 1") { it("works") { expect(calc.add(1, 1)).to(equal(2)) } } } } } } લճͷ͕DVSSFOU&YBNQMF(SPVQͰ

{ internal func describe(_ description: String, flags: FilterFlags, closure: () -> Void) { let group = ExampleGroup(description: description, flags: flags) currentExampleGroup.appendExampleGroup(group) performWithCurrentExampleGroup(group, closure: closure) } } class CalcSpec: QuickSpec { override func spec() { describe("calc") { var calc: Calc! beforeEach { calc = Calc() } describe("add") { context("1 + 1") { it("works") { expect(calc.add(1, 1)).to(equal(2)) } } } } } } ৽͍͠ͷΛ௥Ճͯ͠

{ internal func describe(_ description: String, flags: FilterFlags, closure: () -> Void) { let group = ExampleGroup(description: description, flags: flags) currentExampleGroup.appendExampleGroup(group) performWithCurrentExampleGroup(group, closure: closure) } } class CalcSpec: QuickSpec { override func spec() { describe("calc") { var calc: Calc! beforeEach { calc = Calc() } describe("add") { context("1 + 1") { it("works") { expect(calc.add(1, 1)).to(equal(2)) } } } } } } ΫϩʔδϟΛ౉ͯ͠ॲཧͯ͠Δʂ

97 Copyright (C) DeNA Co.,Ltd. All Rights Reserved. // World+DSL.swift
extension World { internal func describe(_ description: String, flags: FilterFlags, closure: () -> Void) { let group = ExampleGroup(description: description, flags: flags) currentExampleGroup.appendExampleGroup(group) performWithCurrentExampleGroup(group, closure: closure) } } class CalcSpec: QuickSpec { override func spec() { describe("calc") { var calc: Calc! beforeEach { calc = Calc() } describe("add") { context("1 + 1") { it("works") { expect(calc.add(1, 1)).to(equal(2)) } } } } } } ΫϩʔδϟΛ౉ͯ͠ॲཧͯ͠Δʂ DSL ߏ଄͕૊ΈཱͯΒΕΔ ࢓૊Έ͕ݟ͖͑ͯͨͧʂ

class World: _WorldBase { internal func performWithCurrentExampleGroup(_ group: ExampleGroup, closure: () -> Void) { let previousExampleGroup = currentExampleGroup currentExampleGroup = group closure() currentExampleGroup = previousExampleGroup } } class CalcSpec: QuickSpec { override func spec() { describe("calc") { var calc: Calc! beforeEach { calc = Calc() } describe("add") { context("1 + 1") { it("works") { expect(calc.add(1, 1)).to(equal(2)) } } } } } World.swift

class World: _WorldBase { internal func performWithCurrentExampleGroup(_ group: ExampleGroup, closure: () -> Void) { let previousExampleGroup = currentExampleGroup currentExampleGroup = group closure() currentExampleGroup = previousExampleGroup } } class CalcSpec: QuickSpec { override func spec() { describe("calc") { var calc: Calc! beforeEach { calc = Calc() } describe("add") { context("1 + 1") { it("works") { expect(calc.add(1, 1)).to(equal(2)) } } } } } ྫͷҰ࣌ୀආͯͨ͠ίʔυ World.swift

class World: _WorldBase { internal func performWithCurrentExampleGroup(_ group: ExampleGroup, closure: () -> Void) { let previousExampleGroup = currentExampleGroup currentExampleGroup = group closure() currentExampleGroup = previousExampleGroup } } class CalcSpec: QuickSpec { override func spec() { describe("calc") { var calc: Calc! beforeEach { calc = Calc() } describe("add") { context("1 + 1") { it("works") { expect(calc.add(1, 1)).to(equal(2)) } } } } } ͖ͬ͞࡞ͬͨ&YBNQMF(SPVQͱ த਎ͷΫϩʔδϟ͕Ҿ਺ʹ World.swift

class World: _WorldBase { internal func performWithCurrentExampleGroup(_ group: ExampleGroup, closure: () -> Void) { let previousExampleGroup = currentExampleGroup currentExampleGroup = group closure() currentExampleGroup = previousExampleGroup } } class CalcSpec: QuickSpec { override func spec() { describe("calc") { var calc: Calc! beforeEach { calc = Calc() } describe("add") { context("1 + 1") { it("works") { expect(calc.add(1, 1)).to(equal(2)) } } } } } World currentExampleGroup ݱࡏͷ&YBNQMF(SPVQΛ World.swift

class World: _WorldBase { internal func performWithCurrentExampleGroup(_ group: ExampleGroup, closure: () -> Void) { let previousExampleGroup = currentExampleGroup currentExampleGroup = group closure() currentExampleGroup = previousExampleGroup } } class CalcSpec: QuickSpec { override func spec() { describe("calc") { var calc: Calc! beforeEach { calc = Calc() } describe("add") { context("1 + 1") { it("works") { expect(calc.add(1, 1)).to(equal(2)) } } } } } World currentExampleGroup ৽͍͠ͷʹ੾Γସ͑ͯ World.swift

class World: _WorldBase { internal func performWithCurrentExampleGroup(_ group: ExampleGroup, closure: () -> Void) { let previousExampleGroup = currentExampleGroup currentExampleGroup = group closure() currentExampleGroup = previousExampleGroup } } class CalcSpec: QuickSpec { override func spec() { describe("calc") { var calc: Calc! beforeEach { calc = Calc() } describe("add") { context("1 + 1") { it("works") { expect(calc.add(1, 1)).to(equal(2)) } } } } } ΫϩʔδϟΛධՁ͠ World currentExampleGroup World.swift

class World: _WorldBase { internal func performWithCurrentExampleGroup(_ group: ExampleGroup, closure: () -> Void) { let previousExampleGroup = currentExampleGroup currentExampleGroup = group closure() currentExampleGroup = previousExampleGroup } } class CalcSpec: QuickSpec { override func spec() { describe("calc") { var calc: Calc! beforeEach { calc = Calc() } describe("add") { context("1 + 1") { it("works") { expect(calc.add(1, 1)).to(equal(2)) } } } } } World currentExampleGroup ݩʹ໭͍ͯ͠Δʂ World.swift

final internal class World: _WorldBase { internal func performWithCurrentExampleGroup(_ group: ExampleGroup, closure: () -> Void) { let previousExampleGroup = currentExampleGroup currentExampleGroup = group closure() currentExampleGroup = previousExampleGroup } } class CalcSpec: QuickSpec { override func spec() { describe("calc") { var calc: Calc! beforeEach { calc = Calc() } describe("add") { context("1 + 1") { it("works") { expect(calc.add(1, 1)).to(equal(2)) } } } World currentExampleGroup ݩʹ໭͍ͯ͠Δʂ World.swift ͜Ε͕୯ͳΔؔ਺ʴΫϩʔδϟͰ ঢ়ଶΛอ࣋ͭͭ͠૊ΈཱͯΔ࢓૊Έ 8PSME͕ίϯςΩετΛ੾Γସ͍͑ͯ͘

QuickSpec.h / m World+DSL.swift World.swift ExampleGroup.swift ExampleHooks.swift

{ internal func context(_ description: String, flags: FilterFlags, closure: () -> Void) { guard currentExampleMetadata == nil else { raiseError("...") } self.describe(description, flags: flags, closure: closure) } } World+DSL.swift

{ internal func context(_ description: String, flags: FilterFlags, closure: () -> Void) { guard currentExampleMetadata == nil else { raiseError("...") } self.describe(description, flags: flags, closure: closure) } } EFTDSJCFΛݺΜͰΔ͚ͩ World+DSL.swift

{ internal func context(_ description: String, flags: FilterFlags, closure: () -> Void) { guard currentExampleMetadata == nil else { raiseError("...") } self.describe(description, flags: flags, closure: closure) } } EFTDSJCFΛݺΜͰΔ͚ͩ World+DSL.swift describe = context = ExampleGroup %4-ͱ໊ͯ͠લ͕ఏڙ͞Ε͍ͯΔ͚ͩ ࣮ଶ͸

QuickSpec { override func spec() { describe("calc") { var calc: Calc! beforeEach { calc = Calc() } describe("add") { context("1 + 1") { it("works") { expect(calc.add(1, 1)).to(equal(2)) } } } } } } ࠷ޙʂ CalcSpec.swift beforeEach describe context it describe

it(_ description: String, flags: FilterFlags = [:], file: String = #file, line: UInt = #line, closure: @escaping () -> Void) { World.sharedWorld.it(description, flags: flags, file: file, line: line, closure: closure) } DSL.swift

it(_ description: String, flags: FilterFlags = [:], file: String = #file, line: UInt = #line, closure: @escaping () -> Void) { World.sharedWorld.it(description, flags: flags, file: file, line: line, closure: closure) } ϚΫϩͰʮϑΝΠϧʯͱʮߦʯΛड͚औΓ DSL.swift

it(_ description: String, flags: FilterFlags = [:], file: String = #file, line: UInt = #line, closure: @escaping () -> Void) { World.sharedWorld.it(description, flags: flags, file: file, line: line, closure: closure) } ͍ͭ΋ͷΑ͏ʹ8PSMEʹҕৡ DSL.swift

{ @nonobjc internal func it(_ description: String, flags: FilterFlags, file: String, line: UInt, closure: @escaping () -> Void) { let callsite = Callsite(file: file, line: line) let example = Example(description: description, callsite: callsite, flags: flags, closure: closure) currentExampleGroup.appendExample(example) } } World+DSL.swift

{ @nonobjc internal func it(_ description: String, flags: FilterFlags, file: String, line: UInt, closure: @escaping () -> Void) { let callsite = Callsite(file: file, line: line) let example = Example(description: description, callsite: callsite, flags: flags, closure: closure) currentExampleGroup.appendExample(example) } } ϑΝΠϧͱߦΛߏ଄ମʹϥοϓ͠ World+DSL.swift

{ @nonobjc internal func it(_ description: String, flags: FilterFlags, file: String, line: UInt, closure: @escaping () -> Void) { let callsite = Callsite(file: file, line: line) let example = Example(description: description, callsite: callsite, flags: flags, closure: closure) currentExampleGroup.appendExample(example) } } &YBNQMFΛੜ੒͠ World+DSL.swift

{ @nonobjc internal func it(_ description: String, flags: FilterFlags, file: String, line: UInt, closure: @escaping () -> Void) { let callsite = Callsite(file: file, line: line) let example = Example(description: description, callsite: callsite, flags: flags, closure: closure) currentExampleGroup.appendExample(example) } } DVSSFOU&YBNQMF(SPVQʹ௥Ճ World+DSL.swift

extension World { @nonobjc internal func it(_ description: String, flags: FilterFlags, file: String, line: UInt, closure: @escaping () -> Void) { let callsite = Callsite(file: file, line: line) let example = Example(description: description, callsite: callsite, flags: flags, closure: closure) currentExampleGroup.appendExample(example) } } DVSSFOU&YBNQMF(SPVQʹ௥Ճ Έͳ·Ͱݴ͏ͳ ΋͏෼͔͍ͬͯΔ

extension World { @nonobjc internal func it(_ description: String, flags: FilterFlags, file: String, line: UInt, closure: @escaping () -> Void) { let callsite = Callsite(file: file, line: line) let example = Example(description: description, callsite: callsite, flags: flags, closure: closure) currentExampleGroup.appendExample(example) } } DVSSFOU&YBNQMF(SPVQʹ௥Ճ it = Example ͩʂ ಡΊΔɺಡΊΔͧʂ

QuickSpec { override func spec() { describe("calc") { var calc: Calc! beforeEach { calc = Calc() } describe("add") { context("1 + 1") { it("works") { expect(calc.add(1, 1)).to(equal(2)) } } } } } } CalcSpec.swift beforeEach describe context it describe ΦϒδΣΫτͷߏ଄͕ ݟ͖͑ͯͨͧ

QuickSpec { override func spec() { describe("calc") { var calc: Calc! beforeEach { calc = Calc() } describe("add") { context("1 + 1") { it("works") { expect(calc.add(1, 1)).to(equal(2)) } } } } } } CalcSpec.swift beforeEach describe context it describe ExampleGroup: calc EFTDSJCF͸&YBNQMF(SPVQ

QuickSpec { override func spec() { describe("calc") { var calc: Calc! beforeEach { calc = Calc() } describe("add") { context("1 + 1") { it("works") { expect(calc.add(1, 1)).to(equal(2)) } } } } } } CalcSpec.swift beforeEach describe context it describe ExampleGroup: calc hooks.befores

QuickSpec { override func spec() { describe("calc") { var calc: Calc! beforeEach { calc = Calc() } describe("add") { context("1 + 1") { it("works") { expect(calc.add(1, 1)).to(equal(2)) } } } } } } CalcSpec.swift beforeEach describe context it describe ExampleGroup: calc hooks.befores ExampleGroup: add

QuickSpec { override func spec() { describe("calc") { var calc: Calc! beforeEach { calc = Calc() } describe("add") { context("1 + 1") { it("works") { expect(calc.add(1, 1)).to(equal(2)) } } } } } } CalcSpec.swift beforeEach describe context it describe ExampleGroup: calc hooks.befores ExampleGroup: add ExampleGroup: 1 + 1 DPOUFYU΋&YBNQMF(SPVQ

QuickSpec { override func spec() { describe("calc") { var calc: Calc! beforeEach { calc = Calc() } describe("add") { context("1 + 1") { it("works") { expect(calc.add(1, 1)).to(equal(2)) } } } } } } CalcSpec.swift beforeEach describe context it describe ExampleGroup: calc hooks.befores ExampleGroup: add ExampleGroup: 1 + 1 Example: works JU͸&YBNQMF

QuickSpec { override func spec() { describe("calc") { var calc: Calc! beforeEach { calc = Calc() } describe("add") { context("1 + 1") { it("works") { expect(calc.add(1, 1)).to(equal(2)) } } } } } } CalcSpec.swift beforeEach describe context it describe ExampleGroup: calc hooks.befores ExampleGroup: add ExampleGroup: 1 + 1 Example: works CallSite (ﬁle, line) expect(calc.add(1, 1)).to(equal(2)) ϑΝΠϧɾߦɺΞαʔγϣϯίʔυΛ࣋ͭ

QuickSpec { override func spec() { describe("calc") { var calc: Calc! beforeEach { calc = Calc() } describe("add") { context("1 + 1") { it("works") { expect(calc.add(1, 1)).to(equal(2)) } } } } } } CalcSpec.swift beforeEach describe context it describe ExampleGroup: calc hooks.befores ExampleGroup: add ExampleGroup: 1 + 1 Example: works CallSite (ﬁle, line) expect(calc.add(1, 1)).to(equal(2)) ϑΝΠϧɾߦɺΞαʔγϣϯίʔυΛ࣋ͭ Quick ͷ DSL ׬શʹཧղͨ͠

QuickSpec { override func spec() { describe("calc") { var calc: Calc! beforeEach { calc = Calc() } describe("add") { context("1 + 1") { it("works") { expect(calc.add(1, 1)).to(equal(2)) } } } } } } CalcSpec.swift

QuickSpec { override func spec() { describe("calc") { var calc: Calc! beforeEach { calc = Calc() } describe("add") { context("1 + 1") { it("works") { expect(calc.add(1, 1)).to(equal(2)) } } } } } } CalcSpec.swift %4-ͷΤϯτϦϙΠϯτҎ֎͸ఆ͍ٛͯ͠ͳ͍

QuickSpec { override func spec() { describe("calc") { var calc: Calc! beforeEach { calc = Calc() } describe("add") { context("1 + 1") { it("works") { expect(calc.add(1, 1)).to(equal(2)) } } } } } } CalcSpec.swift %4-ͷΤϯτϦϙΠϯτҎ֎͸ఆ͍ٛͯ͠ͳ͍ ΤϯτϦϙΠϯτʹ ൿີ͕͋Δʹҧ͍ͳ͍ ΋͏Ұ౓ݟͯΈΔ

137 Copyright (C) DeNA Co.,Ltd. All Rights Reserved. @implementation QuickSpec
+ (void)initialize { [QuickConfiguration initialize]; World *world = [World sharedWorld]; [world performWithCurrentExampleGroup:[world rootExampleGroupForSpecClass:self] closure:^{ QuickSpec *spec = [self new]; @try { [spec spec]; } @catch (NSException *exception) { ... } [self testInvocations]; }]; } QuickSpec.m

+ (void)initialize { [QuickConfiguration initialize]; World *world = [World sharedWorld]; [world performWithCurrentExampleGroup:[world rootExampleGroupForSpecClass:self] closure:^{ QuickSpec *spec = [self new]; @try { [spec spec]; } @catch (NSException *exception) { ... } [self testInvocations]; }]; } TQFD͕ݺ͹ΕͨޙͰ QuickSpec.m

+ (void)initialize { [QuickConfiguration initialize]; World *world = [World sharedWorld]; [world performWithCurrentExampleGroup:[world rootExampleGroupForSpecClass:self] closure:^{ QuickSpec *spec = [self new]; @try { [spec spec]; } @catch (NSException *exception) { ... } [self testInvocations]; }]; } Կ͔ݺΜͰΔʂ QuickSpec.m

+ (NSArray *)testInvocations { NSArray *examples = [[World sharedWorld] examplesForSpecClass:[self class]]; NSMutableArray *invocations = [NSMutableArray arrayWithCapacity:[examples count]]; NSMutableSet<NSString*> *selectorNames = [NSMutableSet set]; for (Example *example in examples) { SEL selector = [self addInstanceMethodForExample:example classSelectorNames:selectorNames]; NSMethodSignature *signature = [self instanceMethodSignatureForSelector:selector]; NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:signature]; invocation.selector = selector; [invocations addObject:invocation]; } return invocations; } QuickSpec.m

+ (NSArray *)testInvocations { NSArray *examples = [[World sharedWorld] examplesForSpecClass:[self class]]; NSMutableArray *invocations = [NSMutableArray arrayWithCapacity:[examples count]]; NSMutableSet<NSString*> *selectorNames = [NSMutableSet set]; for (Example *example in examples) { SEL selector = [self addInstanceMethodForExample:example classSelectorNames:selectorNames]; NSMethodSignature *signature = [self instanceMethodSignatureForSelector:selector]; NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:signature]; invocation.selector = selector; [invocations addObject:invocation]; } return invocations; } JUʹରԠ͢Δ&YBNQMFΛநग़ͯ͠ QuickSpec.m

+ (NSArray *)testInvocations { NSArray *examples = [[World sharedWorld] examplesForSpecClass:[self class]]; NSMutableArray *invocations = [NSMutableArray arrayWithCapacity:[examples count]]; NSMutableSet<NSString*> *selectorNames = [NSMutableSet set]; for (Example *example in examples) { SEL selector = [self addInstanceMethodForExample:example classSelectorNames:selectorNames]; NSMethodSignature *signature = [self instanceMethodSignatureForSelector:selector]; NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:signature]; invocation.selector = selector; [invocations addObject:invocation]; } return invocations; } &YBNQMFΛΠϯελϯεϝιουʹ௥Ճͯ͠ QuickSpec.m

+ (NSArray *)testInvocations { NSArray *examples = [[World sharedWorld] examplesForSpecClass:[self class]]; NSMutableArray *invocations = [NSMutableArray arrayWithCapacity:[examples count]]; NSMutableSet<NSString*> *selectorNames = [NSMutableSet set]; for (Example *example in examples) { SEL selector = [self addInstanceMethodForExample:example classSelectorNames:selectorNames]; NSMethodSignature *signature = [self instanceMethodSignatureForSelector:selector]; NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:signature]; invocation.selector = selector; [invocations addObject:invocation]; } return invocations; } 4FMFDUPS͔Β/4*OWPDBUJPOΛੜ੒ͯ͠ QuickSpec.m

+ (NSArray *)testInvocations { NSArray *examples = [[World sharedWorld] examplesForSpecClass:[self class]]; NSMutableArray *invocations = [NSMutableArray arrayWithCapacity:[examples count]]; NSMutableSet<NSString*> *selectorNames = [NSMutableSet set]; for (Example *example in examples) { SEL selector = [self addInstanceMethodForExample:example classSelectorNames:selectorNames]; NSMethodSignature *signature = [self instanceMethodSignatureForSelector:selector]; NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:signature]; invocation.selector = selector; [invocations addObject:invocation]; } return invocations; } ͦͷҰཡΛฦͯ͠Δʂ QuickSpec.m

+ (NSArray *)testInvocations { NSArray *examples = [[World sharedWorld] examplesForSpecClass:[self class]]; NSMutableArray *invocations = [NSMutableArray arrayWithCapacity:[examples count]]; NSMutableSet<NSString*> *selectorNames = [NSMutableSet set]; for (Example *example in examples) { SEL selector = [self addInstanceMethodForExample:example classSelectorNames:selectorNames]; NSMethodSignature *signature = [self instanceMethodSignatureForSelector:selector]; NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:signature]; invocation.selector = selector; [invocations addObject:invocation]; } return invocations; } ͦͷҰཡΛฦͯ͠Δʂ QuickSpec.m Selector ͸෼͔Δ͚Ͳ NSInvocation ͬͯԿͩʁ TFMFDUPSͱ͔Ͱ

0CKFDUJWF$3VOUJNFݶఆͷػೳ ଞݴޠͰݴ͑͹ʮϦϑϨΫγϣϯʯʹ͍ۙ 0CKFDUJWF$ʹ͓͚Δϝιουݺͼग़͠ Dog walk(time: Time) NSInvocation XBML

0CKFDUJWF$3VOUJNFݶఆͷػೳ ଞݴޠͰݴ͑͹ʮϦϑϨΫγϣϯʯʹ͍ۙ 0CKFDUJWF$ʹ͓͚Δϝιουݺͼग़͠ Dog walk(time: Time) NSInvocation XBML ίϯύΠϧ࣌ʹ֬ఆͯ͠ͳ͍ ϝιου΋ಈతʹݺͼग़ͤΔʂ 0CKFDUJWF$Ͱ͸

+ (NSArray *)testInvocations { NSArray *examples = [[World sharedWorld] examplesForSpecClass:[self class]]; NSMutableArray *invocations = [NSMutableArray arrayWithCapacity:[examples count]]; NSMutableSet<NSString*> *selectorNames = [NSMutableSet set]; for (Example *example in examples) { SEL selector = [self addInstanceMethodForExample:example classSelectorNames:selectorNames]; NSMethodSignature *signature = [self instanceMethodSignatureForSelector:selector]; NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:signature]; invocation.selector = selector; [invocations addObject:invocation]; } return invocations; } QuickSpec.m

+ (NSArray *)testInvocations { NSArray *examples = [[World sharedWorld] examplesForSpecClass:[self class]]; NSMutableArray *invocations = [NSMutableArray arrayWithCapacity:[examples count]]; NSMutableSet<NSString*> *selectorNames = [NSMutableSet set]; for (Example *example in examples) { SEL selector = [self addInstanceMethodForExample:example classSelectorNames:selectorNames]; NSMethodSignature *signature = [self instanceMethodSignatureForSelector:selector]; NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:signature]; invocation.selector = selector; [invocations addObject:invocation]; } return invocations; } it("works") { expect(calc.add(1, 1)).to(equal(2)) } Example: works NSInvocation JUʹର͢Δݺͼग़͠Λੜ੒ͯ͠ฦͯ͠Δʂ QuickSpec.m

+ (NSArray *)testInvocations { NSArray *examples = [[World sharedWorld] examplesForSpecClass:[self class]]; NSMutableArray *invocations = [NSMutableArray arrayWithCapacity:[examples count]]; NSMutableSet<NSString*> *selectorNames = [NSMutableSet set]; for (Example *example in examples) { SEL selector = [self addInstanceMethodForExample:example classSelectorNames:selectorNames]; NSMethodSignature *signature = [self instanceMethodSignatureForSelector:selector]; NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:signature]; invocation.selector = selector; [invocations addObject:invocation]; } return invocations; } it("works") { expect(calc.add(1, 1)).to(equal(2)) } Example: works NSInvocation JUʹର͢Δݺͼग़͠Λੜ੒ͯ͠ฦͯ͠Δʂ QuickSpec.m ͜Εͬͯ΋͔ͯ͠͠ ͋ͷҰཡʹରԠͯ͠Δʁ ͋Εʁ

168 Copyright (C) DeNA Co.,Ltd. All Rights Reserved. ·ͱΊ 2VJDL͕Ͳ͏ಈ͔͘ݟ͖ͯͨ
• ΤϯτϦϙΠϯτ • %4-͔ΒΦϒδΣΫτߏ଄ͷੜ੒ • 9$5FTUʹςετର৅ҰཡΛ౉͢ 0CKFDUJWF$ϥϯλΠϜͷ׆༻ • Ϋϥεϩʔυ࣌ͷJOJUJBMJ[F • /4*OWPDBUJPOʹΑΔಈతϝοηʔδϯά 8PSME͕ίϯςΩετΛҡ࣋

169 Copyright (C) DeNA Co.,Ltd. All Rights Reserved. ·ͱΊ 2VJDL͕Ͳ͏ಈ͔͘ݟ͖ͯͨ
• ΤϯτϦϙΠϯτɿTQFD • %4-͔ΒΦϒδΣΫτߏ଄ͷੜ੒ • 8PSMEΛ࢖ͬͨίϯςΩετҡ࣋ • 9$5FTUʹςετର৅ҰཡΛฦ͢ 0CKFDUJWF$ϥϯλΠϜͷ׆༻ • Ϋϥεϩʔυ࣌ͷJOJUJBMJ[F • /4*OWPDBUJPOʹΑΔಈతϝοηʔδϯά ͋ͳͨ΋ࠓ೔͔Β Quick ίϯτϦϏϡʔλ ࢲ΋

ソースコードから読み解く - Quick はどのように実装されているのか？/quick-code-reading

ソースコードから読み解く - Quick はどのように実装されているのか？/quick-code-reading

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