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net.ip: Implement opCmp. Fix #63

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This commit is contained in:
Eugen Wissner 2018-09-24 06:45:44 +02:00
parent 9ac56c50f1
commit fd133554f3
1 changed files with 71 additions and 0 deletions
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71
source/tanya/net/ip.d
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@ -14,6 +14,7 @@
*/
module tanya.net.ip;
import tanya.algorithm.comparison;
import tanya.algorithm.mutation;
import tanya.container.string;
import tanya.conv;
@ -66,6 +67,37 @@ struct Address4
assert(Address4(0x00202000U).toUInt() == 0x00202000U);
}
/**
* Compares two $(D_PARAM Address4) objects.
*
* Params:
* that = Another address.
*
* Returns: Positive number if $(D_KEYWORD this) is larger than
* $(D_PARAM that), negative - if it is smaller, or 0 if they
* equal.
*/
int opCmp(ref const Address4 that) const @nogc nothrow pure @safe
{
const lhs = toUInt();
const rhs = that.toUInt();
return (rhs < lhs) - (lhs < rhs);
}
/// ditto
int opCmp(const Address4 that) const @nogc nothrow pure @safe
{
return opCmp(that);
}
///
@nogc nothrow pure @safe unittest
{
assert(address4("127.0.0.1") > address4("126.0.0.0"));
assert(address4("127.0.0.1") < address4("127.0.0.2"));
assert(address4("127.0.0.1") == address4("127.0.0.1"));
}
/**
* Returns object that represents 127.0.0.1.
*
@ -423,6 +455,45 @@ struct Address6
assert(actual.scopeID == 1);
}
/**
* Compares two $(D_PARAM Address6) objects.
*
* If $(D_KEYWORD this) and $(D_PARAM that) contain the same address, scope
* IDs are compared.
*
* Params:
* that = Another address.
*
* Returns: Positive number if $(D_KEYWORD this) is larger than
* $(D_PARAM that), negative - if it is smaller, or 0 if they
* equal.
*/
int opCmp(ref const Address6 that) const @nogc nothrow pure @safe
{
const diff = compare(this.address[], that.address[]);
if (diff == 0)
{
return (that.scopeID < this.scopeID) - (this.scopeID < that.scopeID);
}
return diff;
}
/// ditto
int opCmp(const Address6 that) const @nogc nothrow pure @safe
{
return opCmp(that);
}
///
@nogc nothrow @safe unittest
{
assert(address6("::14") > address6("::1"));
assert(address6("::1") < address6("::14"));
assert(address6("::1") == address6("::1"));
assert(address6("::1%1") < address6("::1%2"));
assert(address6("::1%2") > address6("::1%1"));
}
/**
* Returns object that represents ::.
*