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primitiveHashCode.stg
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primitiveHashCode.stg
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hashCode ::= [
"boolean": "booleanHashCode",
"byte": "narrowHashCode",
"short": "narrowHashCode",
"char": "narrowHashCode",
"int": "intHashCode",
"long": "longHashCode",
"float": "floatHashCode",
"double": "doubleHashCode",
default: "no matching hash code"
]
booleanHashCode(item) ::= <<
(<item> ? 1231 : 1237)
>>
intHashCode(item) ::= <<
<item>
>>
narrowHashCode(item) ::= <<
(int) <item>
>>
longHashCode(item) ::= <<
(int) (<item> ^ <item> >\>> 32)
>>
floatHashCode(item) ::= <<
Float.floatToIntBits(<item>)
>>
doubleHashCode(item) ::= <<
(int) (Double.doubleToLongBits(<item>) ^ Double.doubleToLongBits(<item>) >\>> 32)
>>
bits ::= [
"byte": "narrowHashCode",
"short": "narrowHashCode",
"char": "narrowHashCode",
"int": "intHashCode",
"long": "intHashCode",
"float": "floatHashCode",
"double": "doubleBits",
default: "no matching bits"
]
doubleBits(item) ::= <<
Double.doubleToLongBits(<item>)
>>
spread ::= [
"byte": "spread8",
"short": "spread32",
"char": "spread32",
"int": "spread32",
"long": "spread64",
"float": "spread32",
"double": "spread64",
default: "no matching spread function"
]
spread2 ::= [
"byte": "spread28",
"short": "spread232",
"char": "spread232",
"int": "spread232",
"long": "spread264",
"float": "spread232",
"double": "spread264",
default: "no matching spread function"
]
reverseSpread ::= [
"byte": "integerReverse",
"short": "integerReverse",
"char": "integerReverse",
"int": "integerReverse",
"long": "longReverse",
"float": "integerReverse",
"double": "longReverse",
default: "no matching spread function"
]
integerReverse() ::= <<
Integer.reverse
>>
longReverse() ::= <<
(int) Long.reverse
>>
spread8(type) ::= <<
int spreadAndMask(<type> element)
{
// No spreading necessary for 8-bit types
return this.mask(element);
}
>>
spread28(type) ::= <<
>>
spread32(type) ::= <<
int spreadAndMask(<type> element)
{
int code = SpreadFunctions.<type>SpreadOne(element);
return this.mask(code);
}
>>
spread232(type) ::= <<
int spreadTwoAndMask(<type> element)
{
int code = SpreadFunctions.<type>SpreadTwo(element);
return this.mask(code);
}
>>
spread64(type) ::= <<
int spreadAndMask(<type> element)
{
long code = SpreadFunctions.<type>SpreadOne(element);
return this.mask((int) code);
}
>>
spread264(type) ::= <<
int spreadTwoAndMask(<type> element)
{
long code = SpreadFunctions.<type>SpreadTwo(element);
return this.mask((int) code);
}
>>
probe ::= [
"byte": "probe8",
"short": "probe3264",
"char": "probe3264",
"int": "probe3264",
"float": "probe3264",
"long": "probe3264",
"double": "probe3264",
default: "no matching probe function"
]