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Support comparison operators #1347

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Merged
lostmsu merged 12 commits into from
Jan 12, 2021
Merged

Support comparison operators #1347

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9a8cb96
Add comparison operators
christabella Dec 29, 2020
bcbace3
Add tests for logical (bool) comparison operators
christabella Dec 29, 2020
31f3ed1
Finish comparison operator impl and add tests
christabella Jan 6, 2021
ae7e774
Add eq and ineq operators, disallow reverse for comp
christabella Jan 7, 2021
5685727
Minor formatting (whitespace, ordering)
christabella Jan 7, 2021
03a73c0
Minor: use `out var` instead of declaring separately.
christabella Jan 7, 2021
67928e1
Implement .Equals and .GetHashCode to fix warning
christabella Jan 7, 2021
6a64678
Style (TryGetValue), formatting, and minor changes
christabella Jan 8, 2021
9dd9162
Use a separate map for comparison operators
christabella Jan 8, 2021
a8c6591
Add tuple comparison operator tests (2/6)
christabella Jan 11, 2021
6d4dec7
Add reverse case for tuple comparison op test
christabella Jan 11, 2021
7a2b5e2
Simplify PyObj casting, logic of if blocks.
christabella Jan 12, 2021
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Add tuple comparison operator tests (2/6)
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@christabella
christabella committed Jan 12, 2021
commit a8c659158d1daff05063bbdff7710217ff4b697b
40 changes: 40 additions & 0 deletions src/embed_tests/TestOperator.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -212,6 +212,25 @@ public OperableObject(int num)
return (a.Num >= b);
}

public static bool operator >=(OperableObject a, PyObject b)
{
using (Py.GIL())
{
// Assuming b is a tuple, take the first element.
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int bNum = (int)b.ToArray()[0].AsManagedObject(typeof(int));
return a.Num >= bNum;
}
}
public static bool operator <=(OperableObject a, PyObject b)
{
using (Py.GIL())
{
// Assuming b is a tuple, take the first element.
int bNum = (int)b.ToArray()[0].AsManagedObject(typeof(int));
return a.Num <= bNum;
}
}

public static bool operator <(int a, OperableObject b)
{
return (a < b.Num);
Expand Down Expand Up @@ -391,6 +410,27 @@ public void ForwardOperatorOverloads()
");
}

[Test]
public void TupleComparisonOperatorOverloads()
{
string name = string.Format("{0}.{1}",
typeof(OperableObject).DeclaringType.Name,
typeof(OperableObject).Name);
string module = MethodBase.GetCurrentMethod().DeclaringType.Namespace;
PythonEngine.Exec($@"
from {module} import *
cls = {name}
a = cls(2)
b = (1, 2)

c = a >= b
assert c == (a.Num >= b[0])

c = a <= b
assert c == (a.Num <= b[0])
");
}


[Test]
public void ReverseOperatorOverloads()
Expand Down