BigfootDev/flatbuffers
1
0
Fork 1
mirror of https://github.com/google/flatbuffers.git synced 2026-07-04 11:21:10 +00:00
Code Issues Packages Projects Releases Wiki Activity

[swift] Implements union strings (#6589)

Browse Source
This commit is contained in:
mustiikhalil
2021-04-24 14:47:24 +03:00
committed by GitHub
parent b82fe07384
commit 4ccc52c7a0
19 changed files with 398 additions and 282 deletions
Download Patch File Download Diff File Expand all files Collapse all files

42
swift/Sources/FlatBuffers/FlatBufferBuilder.swift
View File

@@ -28,7 +28,7 @@ public struct FlatBufferBuilder {
/// A check if the buffer is being written into by a different table
private var isNested = false
/// Dictonary that stores a map of all the strings that were written to the buffer
private var stringOffsetMap: [String: Offset<String>] = [:]
private var stringOffsetMap: [String: Offset] = [:]
/// A check to see if finish(::) was ever called to retreive data object
private var finished = false
/// A check to see if the buffer should serialize Default values
@@ -107,7 +107,7 @@ public struct FlatBufferBuilder {
/// - Parameters:
/// - table: offset for the table
/// - fields: Array of all the important fields to be serialized
mutating public func require(table: Offset<UOffset>, fields: [Int32]) {
mutating public func require(table: Offset, fields: [Int32]) {
for field in fields {
let start = _bb.capacity &- Int(table.o)
let startTable = start &- Int(_bb.read(def: Int32.self, position: start))
@@ -121,7 +121,7 @@ public struct FlatBufferBuilder {
/// - offset: Offset of the table
/// - fileId: Takes the fileId
/// - prefix: if false it wont add the size of the buffer
mutating public func finish<T>(offset: Offset<T>, fileId: String, addPrefix prefix: Bool = false) {
mutating public func finish(offset: Offset, fileId: String, addPrefix prefix: Bool = false) {
let size = MemoryLayout<UOffset>.size
preAlign(len: size &+ (prefix ? size : 0) &+ FileIdLength, alignment: _minAlignment)
assert(fileId.count == FileIdLength, "Flatbuffers requires file id to be 4")
@@ -133,7 +133,7 @@ public struct FlatBufferBuilder {
/// - Parameters:
/// - offset: Offset of the table
/// - prefix: if false it wont add the size of the buffer
mutating public func finish<T>(offset: Offset<T>, addPrefix prefix: Bool = false) {
mutating public func finish(offset: Offset, addPrefix prefix: Bool = false) {
notNested()
let size = MemoryLayout<UOffset>.size
preAlign(len: size &+ (prefix ? size : 0), alignment: _minAlignment)
@@ -296,7 +296,7 @@ public struct FlatBufferBuilder {
///
/// The current function will fatalError if startVector is called before serializing the vector
/// - Parameter len: Length of the buffer
mutating public func endVector(len: Int) -> Offset<UOffset> {
mutating public func endVector(len: Int) -> Offset {
assert(isNested, "Calling endVector without calling startVector")
isNested = false
return Offset(offset: push(element: Int32(len)))
@@ -305,7 +305,7 @@ public struct FlatBufferBuilder {
/// Creates a vector of type Scalar in the buffer
/// - Parameter elements: elements to be written into the buffer
/// - returns: Offset of the vector
mutating public func createVector<T: Scalar>(_ elements: [T]) -> Offset<UOffset> {
mutating public func createVector<T: Scalar>(_ elements: [T]) -> Offset {
createVector(elements, size: elements.count)
}
@@ -313,7 +313,7 @@ public struct FlatBufferBuilder {
/// - Parameter elements: Elements to be written into the buffer
/// - Parameter size: Count of elements
/// - returns: Offset of the vector
mutating public func createVector<T: Scalar>(_ elements: [T], size: Int) -> Offset<UOffset> {
mutating public func createVector<T: Scalar>(_ elements: [T], size: Int) -> Offset {
let size = size
startVector(size, elementSize: MemoryLayout<T>.size)
_bb.push(elements: elements)
@@ -323,7 +323,7 @@ public struct FlatBufferBuilder {
/// Creates a vector of type Enums in the buffer
/// - Parameter elements: elements to be written into the buffer
/// - returns: Offset of the vector
mutating public func createVector<T: Enum>(_ elements: [T]) -> Offset<UOffset> {
mutating public func createVector<T: Enum>(_ elements: [T]) -> Offset {
createVector(elements, size: elements.count)
}
@@ -331,7 +331,7 @@ public struct FlatBufferBuilder {
/// - Parameter elements: Elements to be written into the buffer
/// - Parameter size: Count of elements
/// - returns: Offset of the vector
mutating public func createVector<T: Enum>(_ elements: [T], size: Int) -> Offset<UOffset> {
mutating public func createVector<T: Enum>(_ elements: [T], size: Int) -> Offset {
let size = size
startVector(size, elementSize: T.byteSize)
for e in elements.reversed() {
@@ -343,7 +343,7 @@ public struct FlatBufferBuilder {
/// Creates a vector of type Offsets in the buffer
/// - Parameter offsets:Array of offsets of type T
/// - returns: Offset of the vector
mutating public func createVector<T>(ofOffsets offsets: [Offset<T>]) -> Offset<UOffset> {
mutating public func createVector(ofOffsets offsets: [Offset]) -> Offset {
createVector(ofOffsets: offsets, len: offsets.count)
}
@@ -351,8 +351,8 @@ public struct FlatBufferBuilder {
/// - Parameter elements: Array of offsets of type T
/// - Parameter size: Count of elements
/// - returns: Offset of the vector
mutating public func createVector<T>(ofOffsets offsets: [Offset<T>], len: Int) -> Offset<UOffset> {
startVector(len, elementSize: MemoryLayout<Offset<T>>.size)
mutating public func createVector(ofOffsets offsets: [Offset], len: Int) -> Offset {
startVector(len, elementSize: MemoryLayout<Offset>.size)
for o in offsets.reversed() {
push(element: o)
}
@@ -362,8 +362,8 @@ public struct FlatBufferBuilder {
/// Creates a vector of Strings
/// - Parameter str: a vector of strings that will be written into the buffer
/// - returns: Offset of the vector
mutating public func createVector(ofStrings str: [String]) -> Offset<UOffset> {
var offsets: [Offset<String>] = []
mutating public func createVector(ofStrings str: [String]) -> Offset {
var offsets: [Offset] = []
for s in str {
offsets.append(create(string: s))
}
@@ -373,7 +373,7 @@ public struct FlatBufferBuilder {
/// Creates a vector of `Native swift structs` which were padded to flatbuffers standards
/// - Parameter structs: A vector of structs
/// - Returns: offset of the vector
mutating public func createVector<T: NativeStruct>(ofStructs structs: [T]) -> Offset<UOffset> {
mutating public func createVector<T: NativeStruct>(ofStructs structs: [T]) -> Offset {
startVector(structs.count * MemoryLayout<T>.size, elementSize: MemoryLayout<T>.alignment)
for i in structs.reversed() {
_ = create(struct: i)
@@ -390,7 +390,7 @@ public struct FlatBufferBuilder {
/// - Returns: offset of written struct
@discardableResult
mutating public func create<T: NativeStruct>(
struct s: T, position: VOffset) -> Offset<UOffset>
struct s: T, position: VOffset) -> Offset
{
let offset = create(struct: s)
_vtableStorage.add(loc: FieldLoc(offset: _bb.size, position: VOffset(position)))
@@ -403,7 +403,7 @@ public struct FlatBufferBuilder {
/// - Returns: offset of written struct
@discardableResult
mutating public func create<T: NativeStruct>(
struct s: T) -> Offset<UOffset>
struct s: T) -> Offset
{
let size = MemoryLayout<T>.size
preAlign(len: size, alignment: MemoryLayout<T>.alignment)
@@ -416,7 +416,7 @@ public struct FlatBufferBuilder {
/// Insets a string into the buffer using UTF8
/// - Parameter str: String to be serialized
/// - returns: The strings offset in the buffer
mutating public func create(string str: String?) -> Offset<String> {
mutating public func create(string str: String?) -> Offset {
guard let str = str else { return Offset() }
let len = str.utf8.count
notNested()
@@ -432,7 +432,7 @@ public struct FlatBufferBuilder {
/// The function checks the stringOffsetmap if it's seen a similar string before
/// - Parameter str: String to be serialized
/// - returns: The strings offset in the buffer
mutating public func createShared(string str: String?) -> Offset<String> {
mutating public func createShared(string str: String?) -> Offset {
guard let str = str else { return Offset() }
if let offset = stringOffsetMap[str] {
return offset
@@ -448,7 +448,7 @@ public struct FlatBufferBuilder {
/// - Parameters:
/// - offset: Offset of another object to be written
/// - position: The predefined position of the object
mutating public func add<T>(offset: Offset<T>, at position: VOffset) {
mutating public func add(offset: Offset, at position: VOffset) {
if offset.isEmpty { return }
add(element: refer(to: offset.o), def: 0, at: position)
}
@@ -457,7 +457,7 @@ public struct FlatBufferBuilder {
/// - Parameter o: Offset
/// - returns: Position of the offset
@discardableResult
mutating public func push<T>(element o: Offset<T>) -> UOffset {
mutating public func push(element o: Offset) -> UOffset {
push(element: refer(to: o.o))
}