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Adds readable size to asserts in read functions (#6210)

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mustiikhalil
2020-10-25 15:59:30 +03:00
committed by GitHub
parent e68e8d7de9
commit 42d7c79977
1 changed files with 7 additions and 5 deletions
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12
swift/Sources/FlatBuffers/ByteBuffer.swift
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@@ -293,7 +293,7 @@ public struct ByteBuffer {
/// - def: Type of the object
/// - position: the index of the object in the buffer
public func read<T>(def: T.Type, position: Int) -> T {
assert(position < _storage.capacity, "Reading out of bounds is illegal")
assert(position + MemoryLayout<T>.size <= _storage.capacity, "Reading out of bounds is illegal")
return _storage.memory.advanced(by: position).load(as: T.self)
}
@@ -304,9 +304,10 @@ public struct ByteBuffer {
public func readSlice<T>(index: Int32,
count: Int32) -> [T] {
let _index = Int(index)
assert(_index < _storage.capacity, "Reading out of bounds is illegal")
let _count = Int(count)
assert(_index + _count <= _storage.capacity, "Reading out of bounds is illegal")
let start = _storage.memory.advanced(by: _index).assumingMemoryBound(to: T.self)
let array = UnsafeBufferPointer(start: start, count: Int(count))
let array = UnsafeBufferPointer(start: start, count: _count)
return Array(array)
}
@@ -319,9 +320,10 @@ public struct ByteBuffer {
count: Int32,
type: String.Encoding = .utf8) -> String? {
let _index = Int(index)
assert(_index < _storage.capacity, "Reading out of bounds is illegal")
let _count = Int(count)
assert(_index + _count <= _storage.capacity, "Reading out of bounds is illegal")
let start = _storage.memory.advanced(by: _index).assumingMemoryBound(to: UInt8.self)
let bufprt = UnsafeBufferPointer(start: start, count: Int(count))
let bufprt = UnsafeBufferPointer(start: start, count: _count)
return String(bytes: Array(bufprt), encoding: type)
}