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ObjectiveCInitExtension.swift
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ObjectiveCInitExtension.swift
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//
// ObjectiveCInitExtension.swift
// plank
//
// Created by Rahul Malik on 2/14/17.
//
//
import Foundation
let dateValueTransformerKey = "kPlankDateValueTransformerKey"
extension ObjCFileRenderer {
func renderPostInitNotification(type: String) -> String {
return "[[NSNotificationCenter defaultCenter] postNotificationName:kPlankDidInitializeNotification object:self userInfo:@{ kPlankInitTypeKey : @(\(type)) }];"
}
}
extension ObjCModelRenderer {
func renderModelObjectWithDictionary() -> ObjCIR.Method {
return ObjCIR.method("+ (instancetype)modelObjectWithDictionary:(NSDictionary *)dictionary") {
["return [[self alloc] initWithModelDictionary:dictionary];"]
}
}
func renderDesignatedInit() -> ObjCIR.Method {
return ObjCIR.method("- (instancetype)init") {
[
"return [self initWithModelDictionary:@{}];"
]
}
}
func renderInitWithBuilder() -> ObjCIR.Method {
return ObjCIR.method("- (instancetype)initWithBuilder:(\(builderClassName) *)builder") {
[
"NSParameterAssert(builder);",
"return [self initWithBuilder:builder initType:PlankModelInitTypeDefault];"
]
}
}
func renderInitWithBuilderWithInitType() -> ObjCIR.Method {
return ObjCIR.method("- (instancetype)initWithBuilder:(\(builderClassName) *)builder initType:(PlankModelInitType)initType") {
[
"NSParameterAssert(builder);",
self.isBaseClass ? ObjCIR.ifStmt("!(self = [super init])") { ["return self;"] } :
ObjCIR.ifStmt("!(self = [super initWithBuilder:builder initType:initType])") { ["return self;"] },
self.properties.map { (name, _) in
"_\(name.snakeCaseToPropertyName()) = builder.\(name.snakeCaseToPropertyName());"
}.joined(separator: "\n"),
"_\(self.dirtyPropertiesIVarName) = builder.\(self.dirtyPropertiesIVarName);",
ObjCIR.ifStmt("[self class] == [\(self.className) class]") {
[renderPostInitNotification(type: "initType")]
},
"return self;"
]
}
}
public func renderInitWithModelDictionary() -> ObjCIR.Method {
func renderPropertyInit(
_ propertyToAssign: String,
_ rawObjectName: String,
schema: Schema,
firstName: String, // TODO: HACK to get enums to work (not clean)
counter: Int = 0
) -> [String] {
switch schema {
case .array(itemType: .some(let itemType)):
let currentResult = "result\(counter)"
let currentTmp = "tmp\(counter)"
let currentObj = "obj\(counter)"
return [
"NSArray *items = \(rawObjectName);",
"NSMutableArray *\(currentResult) = [NSMutableArray arrayWithCapacity:items.count];",
ObjCIR.forStmt("id \(currentObj) in items") { [
ObjCIR.ifStmt("\(currentObj) != (id)kCFNull") { [
"id \(currentTmp) = nil;",
renderPropertyInit(currentTmp, currentObj, schema: itemType, firstName: firstName, counter: counter + 1).joined(separator: "\n"),
ObjCIR.ifStmt("\(currentTmp) != nil") {[
"[\(currentResult) addObject:\(currentTmp)];"
]}
]}
]},
"\(propertyToAssign) = \(currentResult);"
]
case .map(valueType: .some(let valueType)) where valueType.isObjCPrimitiveType == false:
let currentResult = "result\(counter)"
let currentItems = "items\(counter)"
let (currentKey, currentObj, currentStop) = ("key\(counter)", "obj\(counter)", "stop\(counter)")
return [
"NSDictionary *\(currentItems) = \(rawObjectName);",
"NSMutableDictionary *\(currentResult) = [NSMutableDictionary dictionaryWithCapacity:\(currentItems).count];",
ObjCIR.stmt(
ObjCIR.msg(currentItems,
("enumerateKeysAndObjectsUsingBlock",
ObjCIR.block(["NSString * _Nonnull \(currentKey)",
"id _Nonnull \(currentObj)",
"__unused BOOL * _Nonnull \(currentStop)"]) {
[
ObjCIR.ifStmt("\(currentObj) != nil && \(currentObj) != (id)kCFNull") {
renderPropertyInit("\(currentResult)[\(currentKey)]", currentObj, schema: valueType, firstName: firstName, counter: counter + 1)
}
]
})
)
),
"\(propertyToAssign) = \(currentResult);"
]
case .float:
return ["\(propertyToAssign) = [\(rawObjectName) doubleValue];"]
case .integer:
return ["\(propertyToAssign) = [\(rawObjectName) integerValue];"]
case .boolean:
return ["\(propertyToAssign) = [\(rawObjectName) boolValue];"]
case .string(format: .some(.uri)):
return ["\(propertyToAssign) = [NSURL URLWithString:\(rawObjectName)];"]
case .string(format: .some(.dateTime)):
return ["\(propertyToAssign) = [[NSValueTransformer valueTransformerForName:\(dateValueTransformerKey)] transformedValue:\(rawObjectName)];"]
case .reference(with: let ref):
return ref.force().map {
renderPropertyInit(propertyToAssign, rawObjectName, schema: $0, firstName: firstName, counter: counter)
} ?? {
assert(false, "TODO: Forward optional across methods")
return []
}()
case .enumT(.integer(let variants)):
return renderPropertyInit(propertyToAssign, rawObjectName, schema: .integer, firstName: firstName, counter: counter)
case .enumT(.string(let variants)):
return ["\(propertyToAssign) = \(enumFromStringMethodName(propertyName: firstName, className: className))(value);"]
case .object(let objectRoot):
return ["\(propertyToAssign) = [\(objectRoot.className(with: self.params)) modelObjectWithDictionary:\(rawObjectName)];"]
case .oneOf(types: let schemas):
// TODO Update to create ADT objects
let adtClassName = self.objcClassFromSchema(firstName, schema).trimmingCharacters(in: CharacterSet(charactersIn: "*"))
func loop(schema: Schema) -> String {
func transformToADTInit(_ lines: [String]) -> [String] {
if let assignmentLine = lines.last {
let propAssignmentPrefix = "\(propertyToAssign) = "
if assignmentLine.hasPrefix(propAssignmentPrefix) {
let propertyInitStatement = assignmentLine.substring(from: propAssignmentPrefix.endIndex).trimmingCharacters(in: CharacterSet.init(charactersIn: " ;"))
let adtInitStatement = propAssignmentPrefix + "[\(adtClassName) objectWith\(ObjCADTRenderer.objectName(schema)):\(propertyInitStatement)];"
return lines.dropLast() + [adtInitStatement]
}
}
return lines
}
switch schema {
case .object(let objectRoot):
return ObjCIR.ifStmt("[\(rawObjectName) isKindOfClass:[NSDictionary class]] && [\(rawObjectName)[\("type".objcLiteral())] isEqualToString:\(objectRoot.typeIdentifier.objcLiteral())]") {
transformToADTInit(["\(propertyToAssign) = [\(objectRoot.className(with: self.params)) modelObjectWithDictionary:\(rawObjectName)];"])
}
case .reference(with: let ref):
return ref.force().map(loop) ?? {
assert(false, "TODO: Forward optional across methods")
return ""
}()
case .float:
let encodingConditions = [
"strcmp([\(rawObjectName) objCType], @encode(float)) == 0",
"strcmp([\(rawObjectName) objCType], @encode(double)) == 0"
]
return ObjCIR.ifStmt("[\(rawObjectName) isKindOfClass:[NSNumber class]] && (\(encodingConditions.joined(separator: " ||\n")))") {
return transformToADTInit(renderPropertyInit(propertyToAssign, rawObjectName, schema: .float, firstName: firstName, counter: counter))
}
case .integer, .enumT(.integer):
let encodingConditions = [
"strcmp([\(rawObjectName) objCType], @encode(int)) == 0",
"strcmp([\(rawObjectName) objCType], @encode(unsigned int)) == 0",
"strcmp([\(rawObjectName) objCType], @encode(short)) == 0",
"strcmp([\(rawObjectName) objCType], @encode(unsigned short)) == 0",
"strcmp([\(rawObjectName) objCType], @encode(long)) == 0",
"strcmp([\(rawObjectName) objCType], @encode(long long)) == 0",
"strcmp([\(rawObjectName) objCType], @encode(unsigned long)) == 0",
"strcmp([\(rawObjectName) objCType], @encode(unsigned long long)) == 0"
]
return ObjCIR.ifStmt("[\(rawObjectName) isKindOfClass:[NSNumber class]] && (\(encodingConditions.joined(separator: " ||\n")))") {
return transformToADTInit(renderPropertyInit(propertyToAssign, rawObjectName, schema: schema, firstName: firstName, counter: counter))
}
case .boolean:
return ObjCIR.ifStmt("[\(rawObjectName) isKindOfClass:[NSNumber class]] && strcmp([\(rawObjectName) objCType], @encode(BOOL)) == 0") {
return transformToADTInit(renderPropertyInit(propertyToAssign, rawObjectName, schema: schema, firstName: firstName, counter: counter))
}
case .array(itemType: _):
return ObjCIR.ifStmt("[\(rawObjectName) isKindOfClass:[NSArray class]]") {
return transformToADTInit(renderPropertyInit(propertyToAssign, rawObjectName, schema: schema, firstName: firstName, counter: counter))
}
case .map(valueType: _):
return ObjCIR.ifStmt("[\(rawObjectName) isKindOfClass:[NSDictionary class]]") {
return transformToADTInit(renderPropertyInit(propertyToAssign, rawObjectName, schema: schema, firstName: firstName, counter: counter))
}
case .string(.some(.uri)):
return ObjCIR.ifStmt("[\(rawObjectName) isKindOfClass:[NSString class]] && [NSURL URLWithString:\(rawObjectName)] != nil") {
return transformToADTInit(renderPropertyInit(propertyToAssign, rawObjectName, schema: schema, firstName: firstName, counter: counter))
}
case .string(.some(.dateTime)):
return ObjCIR.ifStmt("[\(rawObjectName) isKindOfClass:[NSString class]] && [[NSValueTransformer valueTransformerForName:\(dateValueTransformerKey)] transformedValue:\(rawObjectName)] != nil") {
return transformToADTInit(renderPropertyInit(propertyToAssign, rawObjectName, schema: schema, firstName: firstName, counter: counter))
}
case .string(.some), .string(.none), .enumT(.string):
return ObjCIR.ifStmt("[\(rawObjectName) isKindOfClass:[NSString class]]") {
return transformToADTInit(renderPropertyInit(propertyToAssign, rawObjectName, schema: schema, firstName: firstName, counter: counter))
}
case .oneOf(types:_):
fatalError("Nested oneOf types are unsupported at this time. Please file an issue if you require this.")
}
}
return schemas.map(loop)
default:
return ["\(propertyToAssign) = \(rawObjectName);"]
}
}
return ObjCIR.method("- (instancetype)initWithModelDictionary:(NS_VALID_UNTIL_END_OF_SCOPE NSDictionary *)modelDictionary") {
return [
"NSParameterAssert(modelDictionary);",
self.isBaseClass ? ObjCIR.ifStmt("!(self = [super init])") { ["return self;"] } :
"if (!(self = [super initWithModelDictionary:modelDictionary])) { return self; }",
-->self.properties.map { (name, schema) in
ObjCIR.scope {[
"__unsafe_unretained id value = modelDictionary[\(name.objcLiteral())]; // Collection will retain.",
ObjCIR.ifStmt("value != nil") {[
ObjCIR.ifStmt("value != (id)kCFNull") {
renderPropertyInit("self->_\(name.snakeCaseToPropertyName())", "value", schema: schema, firstName: name)
},
"self->_\(dirtyPropertiesIVarName).\(dirtyPropertyOption(propertyName: name, className: className)) = 1;"
]}
]}
},
ObjCIR.ifStmt("[self class] == [\(self.className) class]") {
[renderPostInitNotification(type: "PlankModelInitTypeDefault")]
},
"return self;"
]
}
}
}