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StackExchange.Redis
Commit fb02b2f7 authored by Nick Craver's avatar Nick Craver
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Cleanup: RedisKey

parent b1b65583
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Showing with 66 additions and 87 deletions
StackExchange.Redis/StackExchange/Redis/RedisKey.cs
View file @ fb02b2f7
......@@ -13,14 +13,12 @@ public struct RedisKey : IEquatable<RedisKey>
private readonly object keyValue; // always either a string or a byte[]
internal RedisKey(byte[] keyPrefix, object keyValue)
{
this.keyPrefix = (keyPrefix != null && keyPrefix.Length == 0) ? null : keyPrefix;
this.keyPrefix = keyPrefix?.Length == 0 ? null : keyPrefix;
this.keyValue = keyValue;
}
internal RedisKey AsPrefix()
{
return new RedisKey((byte[])this, null);
}
internal RedisKey AsPrefix() => new RedisKey((byte[])this, null);
internal bool IsNull => keyPrefix == null && keyValue == null;
internal bool IsEmpty
......@@ -40,96 +38,86 @@ internal bool IsEmpty
/// <summary>
/// Indicate whether two keys are not equal
/// </summary>
public static bool operator !=(RedisKey x, RedisKey y)
{
return !(x == y);
}
/// <param name="x">The first <see cref="RedisChannel"/> to compare.</param>
/// <param name="y">The second <see cref="RedisChannel"/> to compare.</param>
public static bool operator !=(RedisKey x, RedisKey y) => !(x == y);
/// <summary>
/// Indicate whether two keys are not equal
/// </summary>
public static bool operator !=(string x, RedisKey y)
{
return !(x == y);
}
/// <param name="x">The first <see cref="RedisChannel"/> to compare.</param>
/// <param name="y">The second <see cref="RedisChannel"/> to compare.</param>
public static bool operator !=(string x, RedisKey y) => !(x == y);
/// <summary>
/// Indicate whether two keys are not equal
/// </summary>
public static bool operator !=(byte[] x, RedisKey y)
{
return !(x == y);
}
/// <param name="x">The first <see cref="RedisChannel"/> to compare.</param>
/// <param name="y">The second <see cref="RedisChannel"/> to compare.</param>
public static bool operator !=(byte[] x, RedisKey y) => !(x == y);
/// <summary>
/// Indicate whether two keys are not equal
/// </summary>
public static bool operator !=(RedisKey x, string y)
{
return !(x == y);
}
/// <param name="x">The first <see cref="RedisChannel"/> to compare.</param>
/// <param name="y">The second <see cref="RedisChannel"/> to compare.</param>
public static bool operator !=(RedisKey x, string y) => !(x == y);
/// <summary>
/// Indicate whether two keys are not equal
/// </summary>
public static bool operator !=(RedisKey x, byte[] y)
{
return !(x == y);
}
/// <param name="x">The first <see cref="RedisChannel"/> to compare.</param>
/// <param name="y">The second <see cref="RedisChannel"/> to compare.</param>
public static bool operator !=(RedisKey x, byte[] y) => !(x == y);
/// <summary>
/// Indicate whether two keys are equal
/// </summary>
public static bool operator ==(RedisKey x, RedisKey y)
{
return CompositeEquals(x.keyPrefix, x.keyValue, y.keyPrefix, y.keyValue);
}
/// <param name="x">The first <see cref="RedisChannel"/> to compare.</param>
/// <param name="y">The second <see cref="RedisChannel"/> to compare.</param>
public static bool operator ==(RedisKey x, RedisKey y) => CompositeEquals(x.keyPrefix, x.keyValue, y.keyPrefix, y.keyValue);
/// <summary>
/// Indicate whether two keys are equal
/// </summary>
public static bool operator ==(string x, RedisKey y)
{
return CompositeEquals(null, x, y.keyPrefix, y.keyValue);
}
/// <param name="x">The first <see cref="RedisChannel"/> to compare.</param>
/// <param name="y">The second <see cref="RedisChannel"/> to compare.</param>
public static bool operator ==(string x, RedisKey y) => CompositeEquals(null, x, y.keyPrefix, y.keyValue);
/// <summary>
/// Indicate whether two keys are equal
/// </summary>
public static bool operator ==(byte[] x, RedisKey y)
{
return CompositeEquals(null, x, y.keyPrefix, y.keyValue);
}
/// <param name="x">The first <see cref="RedisChannel"/> to compare.</param>
/// <param name="y">The second <see cref="RedisChannel"/> to compare.</param>
public static bool operator ==(byte[] x, RedisKey y) => CompositeEquals(null, x, y.keyPrefix, y.keyValue);
/// <summary>
/// Indicate whether two keys are equal
/// </summary>
public static bool operator ==(RedisKey x, string y)
{
return CompositeEquals(x.keyPrefix, x.keyValue, null, y);
}
/// <param name="x">The first <see cref="RedisChannel"/> to compare.</param>
/// <param name="y">The second <see cref="RedisChannel"/> to compare.</param>
public static bool operator ==(RedisKey x, string y) => CompositeEquals(x.keyPrefix, x.keyValue, null, y);
/// <summary>
/// Indicate whether two keys are equal
/// </summary>
public static bool operator ==(RedisKey x, byte[] y)
{
return CompositeEquals(x.keyPrefix, x.keyValue, null, y);
}
/// <param name="x">The first <see cref="RedisChannel"/> to compare.</param>
/// <param name="y">The second <see cref="RedisChannel"/> to compare.</param>
public static bool operator ==(RedisKey x, byte[] y) => CompositeEquals(x.keyPrefix, x.keyValue, null, y);
/// <summary>
/// See Object.Equals
/// </summary>
/// <param name="obj">The <see cref="RedisKey"/> to compare to.</param>
public override bool Equals(object obj)
{
if (obj is RedisKey)
if (obj is RedisKey other)
{
var other = (RedisKey)obj;
return CompositeEquals(this.keyPrefix, this.keyValue, other.keyPrefix, other.keyValue);
return CompositeEquals(keyPrefix, keyValue, other.keyPrefix, other.keyValue);
}
if (obj is string || obj is byte[])
{
return CompositeEquals(this.keyPrefix, this.keyValue, null, obj);
return CompositeEquals(keyPrefix, keyValue, null, obj);
}
return false;
}
......@@ -137,14 +125,12 @@ public override bool Equals(object obj)
/// <summary>
/// Indicate whether two keys are equal
/// </summary>
public bool Equals(RedisKey other)
{
return CompositeEquals(this.keyPrefix, this.keyValue, other.keyPrefix, other.keyValue);
}
/// <param name="other">The <see cref="RedisKey"/> to compare to.</param>
public bool Equals(RedisKey other) => CompositeEquals(keyPrefix, keyValue, other.keyPrefix, other.keyValue);
private static bool CompositeEquals(byte[] keyPrefix0, object keyValue0, byte[] keyPrefix1, object keyValue1)
{
if(RedisValue.Equals(keyPrefix0, keyPrefix1))
if (RedisValue.Equals(keyPrefix0, keyPrefix1))
{
if (keyValue0 == keyValue1) return true; // ref equal
if (keyValue0 == null || keyValue1 == null) return false; // null vs non-null
......@@ -161,7 +147,7 @@ private static bool CompositeEquals(byte[] keyPrefix0, object keyValue0, byte[]
/// </summary>
public override int GetHashCode()
{
int chk0 = keyPrefix == null ? 0 : RedisValue.GetHashCode(this.keyPrefix),
int chk0 = keyPrefix == null ? 0 : RedisValue.GetHashCode(keyPrefix),
chk1 = keyValue is string ? keyValue.GetHashCode() : RedisValue.GetHashCode((byte[])keyValue);
return unchecked((17 * chk0) + chk1);
......@@ -170,15 +156,9 @@ public override int GetHashCode()
/// <summary>
/// Obtains a string representation of the key
/// </summary>
public override string ToString()
{
return ((string)this) ?? "(null)";
}
public override string ToString() => ((string)this) ?? "(null)";
internal RedisValue AsRedisValue()
{
return (byte[])this;
}
internal RedisValue AsRedisValue() => (byte[])this;
internal void AssertNotNull()
{
......@@ -186,35 +166,38 @@ internal void AssertNotNull()
}
/// <summary>
/// Create a key from a String
/// Create a <see cref="RedisKey"/> from a <see cref="string"/>.
/// </summary>
/// <param name="key">The string to get a key from.</param>
public static implicit operator RedisKey(string key)
{
if (key == null) return default(RedisKey);
return new RedisKey(null, key);
}
/// <summary>
/// Create a key from a Byte[]
/// Create a <see cref="RedisKey"/> from a <see cref="T:byte[]"/>.
/// </summary>
/// <param name="key">The byte array to get a key from.</param>
public static implicit operator RedisKey(byte[] key)
{
if (key == null) return default(RedisKey);
return new RedisKey(null, key);
}
/// <summary>
/// Obtain the key as a Byte[]
/// Obtain the <see cref="RedisKey"/> as a <see cref="T:byte[]"/>.
/// </summary>
public static implicit operator byte[](RedisKey key)
{
return ConcatenateBytes(key.keyPrefix, key.keyValue, null);
}
/// <param name="key">The key to get a byte array for.</param>
public static implicit operator byte[] (RedisKey key) => ConcatenateBytes(key.keyPrefix, key.keyValue, null);
/// <summary>
/// Obtain the key as a String
/// Obtain the key as a <see cref="string"/>.
/// </summary>
/// <param name="key">The key to get a string for.</param>
public static implicit operator string(RedisKey key)
{
byte[] arr;
if(key.keyPrefix == null)
if (key.keyPrefix == null)
{
if (key.keyValue == null) return null;
......@@ -235,12 +218,13 @@ internal void AssertNotNull()
{
return BitConverter.ToString(arr);
}
}
/// <summary>
/// Concatenate two keys
/// </summary>
/// <param name="x">The first <see cref="RedisKey"/> to add.</param>
/// <param name="y">The second <see cref="RedisKey"/> to add.</param>
[Obsolete]
public static RedisKey operator +(RedisKey x, RedisKey y)
{
......@@ -249,7 +233,7 @@ internal void AssertNotNull()
internal static RedisKey WithPrefix(byte[] prefix, RedisKey value)
{
if(prefix == null || prefix.Length == 0) return value;
if (prefix == null || prefix.Length == 0) return value;
if (value.keyPrefix == null) return new RedisKey(prefix, value.keyValue);
if (value.keyValue == null) return new RedisKey(prefix, value.keyPrefix);
......@@ -275,13 +259,12 @@ internal static byte[] ConcatenateBytes(byte[] a, object b, byte[] c)
: ((byte[])b).Length),
cLen = c?.Length ?? 0;
byte[] result = new byte[aLen + bLen + cLen];
var result = new byte[aLen + bLen + cLen];
if (aLen != 0) Buffer.BlockCopy(a, 0, result, 0, aLen);
if (bLen != 0)
{
if (b is string)
if (b is string s)
{
string s = (string)b;
Encoding.UTF8.GetBytes(s, 0, s.Length, result, aLen);
}
else
......@@ -299,10 +282,8 @@ internal static byte[] ConcatenateBytes(byte[] a, object b, byte[] c)
/// Avoids some allocations if possible, repeated Prepend/Appends make
/// it less possible.
/// </summary>
public RedisKey Prepend(RedisKey p)
{
return WithPrefix(p, this);
}
/// <param name="prefix">The prefix to prepend.</param>
public RedisKey Prepend(RedisKey prefix) => WithPrefix(prefix, this);
/// <summary>
/// Appends p to this RedisKey, returning a new RedisKey.
......@@ -310,9 +291,7 @@ public RedisKey Prepend(RedisKey p)
/// Avoids some allocations if possible, repeated Prepend/Appends make
/// it less possible.
/// </summary>
public RedisKey Append(RedisKey p)
{
return WithPrefix(this, p);
}
/// <param name="suffix">The suffix to append.</param>
public RedisKey Append(RedisKey suffix) => WithPrefix(this, suffix);
}
}
}
\ No newline at end of file
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