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Improve exception throwing implementation in collections

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This commit is contained in:
Jon Skeet 2016-07-01 09:37:12 +01:00
parent 4e0d05138a
commit d9334ea8d9
2 changed files with 25 additions and 45 deletions
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31
csharp/src/Google.Protobuf/Collections/MapField.cs
View File

@ -30,14 +30,13 @@
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#endregion
using Google.Protobuf.Compatibility;
using Google.Protobuf.Reflection;
using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using Google.Protobuf.Compatibility;
namespace Google.Protobuf.Collections
{
@ -113,7 +112,7 @@ namespace Google.Protobuf.Collections
// Validation of arguments happens in ContainsKey and the indexer
if (ContainsKey(key))
{
throw new ArgumentException("Key already exists in map", "key");
throw new ArgumentException("Key already exists in map", nameof(key));
}
this[key] = value;
}
@ -125,7 +124,7 @@ namespace Google.Protobuf.Collections
/// <returns><c>true</c> if the map contains the given key; <c>false</c> otherwise.</returns>
public bool ContainsKey(TKey key)
{
ProtoPreconditions.CheckNotNullUnconstrained(key, "key");
ProtoPreconditions.CheckNotNullUnconstrained(key, nameof(key));
return map.ContainsKey(key);
}
@ -142,7 +141,7 @@ namespace Google.Protobuf.Collections
/// <returns><c>true</c> if the map contained the given key before the entry was removed; <c>false</c> otherwise.</returns>
public bool Remove(TKey key)
{
ProtoPreconditions.CheckNotNullUnconstrained(key, "key");
ProtoPreconditions.CheckNotNullUnconstrained(key, nameof(key));
LinkedListNode<KeyValuePair<TKey, TValue>> node;
if (map.TryGetValue(key, out node))
{
@ -190,7 +189,7 @@ namespace Google.Protobuf.Collections
{
get
{
ProtoPreconditions.CheckNotNullUnconstrained(key, "key");
ProtoPreconditions.CheckNotNullUnconstrained(key, nameof(key));
TValue value;
if (TryGetValue(key, out value))
{
@ -200,11 +199,11 @@ namespace Google.Protobuf.Collections
}
set
{
ProtoPreconditions.CheckNotNullUnconstrained(key, "key");
ProtoPreconditions.CheckNotNullUnconstrained(key, nameof(key));
// value == null check here is redundant, but avoids boxing.
if (value == null)
{
ProtoPreconditions.CheckNotNullUnconstrained(value, "value");
ProtoPreconditions.CheckNotNullUnconstrained(value, nameof(value));
}
LinkedListNode<KeyValuePair<TKey, TValue>> node;
var pair = new KeyValuePair<TKey, TValue>(key, value);
@ -236,7 +235,7 @@ namespace Google.Protobuf.Collections
/// <param name="entries">The entries to add to the map.</param>
public void Add(IDictionary<TKey, TValue> entries)
{
ProtoPreconditions.CheckNotNull(entries, "entries");
ProtoPreconditions.CheckNotNull(entries, nameof(entries));
foreach (var pair in entries)
{
Add(pair.Key, pair.Value);
@ -315,7 +314,7 @@ namespace Google.Protobuf.Collections
{
if (item.Key == null)
{
throw new ArgumentException("Key is null", "item");
throw new ArgumentException("Key is null", nameof(item));
}
LinkedListNode<KeyValuePair<TKey, TValue>> node;
if (map.TryGetValue(item.Key, out node) &&
@ -503,7 +502,7 @@ namespace Google.Protobuf.Collections
void IDictionary.Remove(object key)
{
ProtoPreconditions.CheckNotNull(key, "key");
ProtoPreconditions.CheckNotNull(key, nameof(key));
if (!(key is TKey))
{
return;
@ -532,7 +531,7 @@ namespace Google.Protobuf.Collections
{
get
{
ProtoPreconditions.CheckNotNull(key, "key");
ProtoPreconditions.CheckNotNull(key, nameof(key));
if (!(key is TKey))
{
return null;
@ -714,11 +713,11 @@ namespace Google.Protobuf.Collections
{
if (arrayIndex < 0)
{
throw new ArgumentOutOfRangeException("arrayIndex");
throw new ArgumentOutOfRangeException(nameof(arrayIndex));
}
if (arrayIndex + Count >= array.Length)
{
throw new ArgumentException("Not enough space in the array", "array");
throw new ArgumentException("Not enough space in the array", nameof(array));
}
foreach (var item in this)
{
@ -745,11 +744,11 @@ namespace Google.Protobuf.Collections
{
if (index < 0)
{
throw new ArgumentOutOfRangeException("index");
throw new ArgumentOutOfRangeException(nameof(index));
}
if (index + Count >= array.Length)
{
throw new ArgumentException("Not enough space in the array", "array");
throw new ArgumentException("Not enough space in the array", nameof(array));
}
foreach (var item in this)
{

39
csharp/src/Google.Protobuf/Collections/RepeatedField.cs
View File

@ -34,7 +34,6 @@ using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Text;
namespace Google.Protobuf.Collections
{
@ -227,10 +226,7 @@ namespace Google.Protobuf.Collections
/// <param name="item">The item to add.</param>
public void Add(T item)
{
if (item == null)
{
throw new ArgumentNullException("item");
}
ProtoPreconditions.CheckNotNullUnconstrained(item, nameof(item));
EnsureSize(count + 1);
array[count++] = item;
}
@ -300,10 +296,7 @@ namespace Google.Protobuf.Collections
/// <param name="values">The values to add to this collection.</param>
public void Add(RepeatedField<T> values)
{
if (values == null)
{
throw new ArgumentNullException("values");
}
ProtoPreconditions.CheckNotNull(values, nameof(values));
EnsureSize(count + values.count);
// We know that all the values will be valid, because it's a RepeatedField.
Array.Copy(values.array, 0, array, count, values.count);
@ -316,10 +309,7 @@ namespace Google.Protobuf.Collections
/// <param name="values">The values to add to this collection.</param>
public void Add(IEnumerable<T> values)
{
if (values == null)
{
throw new ArgumentNullException("values");
}
ProtoPreconditions.CheckNotNull(values, nameof(values));
// TODO: Check for ICollection and get the Count, to optimize?
foreach (T item in values)
{
@ -418,10 +408,7 @@ namespace Google.Protobuf.Collections
/// <returns>The zero-based index of the item, or -1 if it is not found.</returns>
public int IndexOf(T item)
{
if (item == null)
{
throw new ArgumentNullException("item");
}
ProtoPreconditions.CheckNotNullUnconstrained(item, nameof(item));
EqualityComparer<T> comparer = EqualityComparer<T>.Default;
for (int i = 0; i < count; i++)
{
@ -440,13 +427,10 @@ namespace Google.Protobuf.Collections
/// <param name="item">The item to insert.</param>
public void Insert(int index, T item)
{
if (item == null)
{
throw new ArgumentNullException("item");
}
ProtoPreconditions.CheckNotNullUnconstrained(item, nameof(item));
if (index < 0 || index > count)
{
throw new ArgumentOutOfRangeException("index");
throw new ArgumentOutOfRangeException(nameof(index));
}
EnsureSize(count + 1);
Array.Copy(array, index, array, index + 1, count - index);
@ -462,7 +446,7 @@ namespace Google.Protobuf.Collections
{
if (index < 0 || index >= count)
{
throw new ArgumentOutOfRangeException("index");
throw new ArgumentOutOfRangeException(nameof(index));
}
Array.Copy(array, index + 1, array, index, count - index - 1);
count--;
@ -494,7 +478,7 @@ namespace Google.Protobuf.Collections
{
if (index < 0 || index >= count)
{
throw new ArgumentOutOfRangeException("index");
throw new ArgumentOutOfRangeException(nameof(index));
}
return array[index];
}
@ -502,12 +486,9 @@ namespace Google.Protobuf.Collections
{
if (index < 0 || index >= count)
{
throw new ArgumentOutOfRangeException("index");
}
if (value == null)
{
throw new ArgumentNullException("value");
throw new ArgumentOutOfRangeException(nameof(index));
}
ProtoPreconditions.CheckNotNullUnconstrained(value, nameof(value));
array[index] = value;
}
}