Extended the type narrowing logic for the x == L type guard pattern…#10164
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… so it supports the case where `x` is `LiteralString` and `L` is a string literal. This addresses #10162.
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Diff from mypy_primer, showing the effect of this PR on open source code: sympy (https://github.com/sympy/sympy)
- /tmp/mypy_primer/projects/sympy/sympy/tensor/tests/test_tensor.py:554:13 - error: Cannot access attribute "canon_bp" for class "Expr"
- Attribute "canon_bp" is unknown (reportAttributeAccessIssue)
- /tmp/mypy_primer/projects/sympy/sympy/tensor/tests/test_tensor.py:554:13 - error: Cannot access attribute "canon_bp" for class "One"
- Attribute "canon_bp" is unknown (reportAttributeAccessIssue)
- /tmp/mypy_primer/projects/sympy/sympy/tensor/tests/test_tensor.py:554:13 - error: Cannot access attribute "canon_bp" for class "Zero"
- Attribute "canon_bp" is unknown (reportAttributeAccessIssue)
- /tmp/mypy_primer/projects/sympy/sympy/tensor/tests/test_tensor.py:554:13 - error: Cannot access attribute "canon_bp" for class "TensExpr"
- Attribute "canon_bp" is unknown (reportAttributeAccessIssue)
- /tmp/mypy_primer/projects/sympy/sympy/tensor/tests/test_tensor.py:558:15 - error: Cannot access attribute "canon_bp" for class "Expr"
- Attribute "canon_bp" is unknown (reportAttributeAccessIssue)
- /tmp/mypy_primer/projects/sympy/sympy/tensor/tests/test_tensor.py:558:15 - error: Cannot access attribute "canon_bp" for class "Zero"
- Attribute "canon_bp" is unknown (reportAttributeAccessIssue)
- /tmp/mypy_primer/projects/sympy/sympy/tensor/tests/test_tensor.py:558:15 - error: Cannot access attribute "canon_bp" for class "One"
- Attribute "canon_bp" is unknown (reportAttributeAccessIssue)
- /tmp/mypy_primer/projects/sympy/sympy/tensor/tests/test_tensor.py:558:15 - error: Cannot access attribute "canon_bp" for class "NegativeOne"
- Attribute "canon_bp" is unknown (reportAttributeAccessIssue)
- /tmp/mypy_primer/projects/sympy/sympy/tensor/tests/test_tensor.py:558:15 - error: Cannot access attribute "canon_bp" for class "Integer"
- Attribute "canon_bp" is unknown (reportAttributeAccessIssue)
- /tmp/mypy_primer/projects/sympy/sympy/tensor/tests/test_tensor.py:558:15 - error: Cannot access attribute "canon_bp" for class "Rational"
- Attribute "canon_bp" is unknown (reportAttributeAccessIssue)
- /tmp/mypy_primer/projects/sympy/sympy/tensor/tests/test_tensor.py:558:15 - error: Cannot access attribute "canon_bp" for class "NaN"
- Attribute "canon_bp" is unknown (reportAttributeAccessIssue)
- /tmp/mypy_primer/projects/sympy/sympy/tensor/tests/test_tensor.py:558:15 - error: Cannot access attribute "canon_bp" for class "ComplexInfinity"
- Attribute "canon_bp" is unknown (reportAttributeAccessIssue)
- /tmp/mypy_primer/projects/sympy/sympy/tensor/tests/test_tensor.py:558:15 - error: Cannot access attribute "canon_bp" for class "Half"
- Attribute "canon_bp" is unknown (reportAttributeAccessIssue)
- /tmp/mypy_primer/projects/sympy/sympy/tensor/tests/test_tensor.py:558:15 - error: Cannot access attribute "canon_bp" for class "Infinity"
- Attribute "canon_bp" is unknown (reportAttributeAccessIssue)
- /tmp/mypy_primer/projects/sympy/sympy/tensor/tests/test_tensor.py:558:15 - error: Cannot access attribute "canon_bp" for class "NegativeInfinity"
- Attribute "canon_bp" is unknown (reportAttributeAccessIssue)
- /tmp/mypy_primer/projects/sympy/sympy/tensor/tests/test_tensor.py:558:15 - error: Cannot access attribute "canon_bp" for class "Float"
- Attribute "canon_bp" is unknown (reportAttributeAccessIssue)
- /tmp/mypy_primer/projects/sympy/sympy/tensor/tests/test_tensor.py:558:15 - error: Cannot access attribute "canon_bp" for class "Number"
- Attribute "canon_bp" is unknown (reportAttributeAccessIssue)
- /tmp/mypy_primer/projects/sympy/sympy/tensor/tests/test_tensor.py:577:13 - error: Cannot access attribute "canon_bp" for class "Expr"
- Attribute "canon_bp" is unknown (reportAttributeAccessIssue)
- /tmp/mypy_primer/projects/sympy/sympy/tensor/tests/test_tensor.py:577:13 - error: Cannot access attribute "canon_bp" for class "One"
- Attribute "canon_bp" is unknown (reportAttributeAccessIssue)
- /tmp/mypy_primer/projects/sympy/sympy/tensor/tests/test_tensor.py:577:13 - error: Cannot access attribute "canon_bp" for class "NegativeOne"
- Attribute "canon_bp" is unknown (reportAttributeAccessIssue)
- /tmp/mypy_primer/projects/sympy/sympy/tensor/tests/test_tensor.py:577:13 - error: Cannot access attribute "canon_bp" for class "Zero"
- Attribute "canon_bp" is unknown (reportAttributeAccessIssue)
- /tmp/mypy_primer/projects/sympy/sympy/tensor/tests/test_tensor.py:577:13 - error: Cannot access attribute "canon_bp" for class "Integer"
- Attribute "canon_bp" is unknown (reportAttributeAccessIssue)
- /tmp/mypy_primer/projects/sympy/sympy/tensor/tests/test_tensor.py:577:13 - error: Cannot access attribute "canon_bp" for class "Rational"
- Attribute "canon_bp" is unknown (reportAttributeAccessIssue)
- /tmp/mypy_primer/projects/sympy/sympy/tensor/tests/test_tensor.py:577:13 - error: Cannot access attribute "canon_bp" for class "NaN"
- Attribute "canon_bp" is unknown (reportAttributeAccessIssue)
- /tmp/mypy_primer/projects/sympy/sympy/tensor/tests/test_tensor.py:577:13 - error: Cannot access attribute "canon_bp" for class "ComplexInfinity"
- Attribute "canon_bp" is unknown (reportAttributeAccessIssue)
- /tmp/mypy_primer/projects/sympy/sympy/tensor/tests/test_tensor.py:577:13 - error: Cannot access attribute "canon_bp" for class "Half"
- Attribute "canon_bp" is unknown (reportAttributeAccessIssue)
- /tmp/mypy_primer/projects/sympy/sympy/tensor/tests/test_tensor.py:577:13 - error: Cannot access attribute "canon_bp" for class "Infinity"
- Attribute "canon_bp" is unknown (reportAttributeAccessIssue)
- /tmp/mypy_primer/projects/sympy/sympy/tensor/tests/test_tensor.py:577:13 - error: Cannot access attribute "canon_bp" for class "NegativeInfinity"
- Attribute "canon_bp" is unknown (reportAttributeAccessIssue)
- /tmp/mypy_primer/projects/sympy/sympy/tensor/tests/test_tensor.py:577:13 - error: Cannot access attribute "canon_bp" for class "Float"
- Attribute "canon_bp" is unknown (reportAttributeAccessIssue)
- /tmp/mypy_primer/projects/sympy/sympy/tensor/tests/test_tensor.py:1602:36 - error: "__getitem__" method not defined on type "NegativeOne" (reportIndexIssue)
- /tmp/mypy_primer/projects/sympy/sympy/tensor/tests/test_tensor.py:1602:36 - error: "__getitem__" method not defined on type "One" (reportIndexIssue)
- /tmp/mypy_primer/projects/sympy/sympy/tensor/tests/test_tensor.py:1602:36 - error: "__getitem__" method not defined on type "TensExpr" (reportIndexIssue)
- /tmp/mypy_primer/projects/sympy/sympy/tensor/tests/test_tensor.py:1608:43 - error: "__getitem__" method not defined on type "NegativeOne" (reportIndexIssue)
- /tmp/mypy_primer/projects/sympy/sympy/tensor/tests/test_tensor.py:1608:43 - error: "__getitem__" method not defined on type "One" (reportIndexIssue)
- /tmp/mypy_primer/projects/sympy/sympy/tensor/tests/test_tensor.py:1608:43 - error: "__getitem__" method not defined on type "TensExpr" (reportIndexIssue)
- /tmp/mypy_primer/projects/sympy/sympy/tensor/tests/test_tensor.py:1663:41 - error: Operator "*" not supported for types "Literal[2]" and "Unknown | Any | Basic | ZeroArray | ArrayTensorProduct | ArrayContraction | Tuple | Indexed | ImmutableDenseNDimArray | NDimArray | None"
+ /tmp/mypy_primer/projects/sympy/sympy/tensor/tests/test_tensor.py:1663:41 - error: Operator "*" not supported for types "Literal[2]" and "Unknown | Any | Basic | Zero | ZeroArray | ArrayTensorProduct | ArrayContraction | Tuple | Indexed | ImmutableDenseNDimArray | NDimArray | None"
- Attribute "data" is unknown (reportAttributeAccessIssue)
- /tmp/mypy_primer/projects/sympy/sympy/tensor/tests/test_tensor.py:1694:44 - error: Cannot access attribute "data" for class "NegativeOne"
- Attribute "data" is unknown (reportAttributeAccessIssue)
- /tmp/mypy_primer/projects/sympy/sympy/tensor/tests/test_tensor.py:1694:44 - error: Cannot access attribute "data" for class "One"
- Attribute "data" is unknown (reportAttributeAccessIssue)
- /tmp/mypy_primer/projects/sympy/sympy/tensor/tests/test_tensor.py:1694:44 - error: Cannot access attribute "data" for class "TensExpr"
- /tmp/mypy_primer/projects/sympy/sympy/tensor/tests/test_tensor.py:1697:17 - error: Operator "-" not supported for type "Unknown | Any | Basic | ZeroArray | ArrayTensorProduct | ArrayContraction | Tuple | Indexed | ImmutableDenseNDimArray | NDimArray" (reportOperatorIssue)
+ /tmp/mypy_primer/projects/sympy/sympy/tensor/tests/test_tensor.py:1697:17 - error: Operator "-" not supported for type "Unknown | Any | Basic | Zero | ZeroArray | ArrayTensorProduct | ArrayContraction | Tuple | Indexed | ImmutableDenseNDimArray | NDimArray" (reportOperatorIssue)
+ /tmp/mypy_primer/projects/sympy/sympy/utilities/codegen.py:608:47 - error: "__getitem__" method not defined on type "set[Unknown]" (reportIndexIssue)
- /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_lambdify.py:2032:45 - error: Argument of type "(e: Unknown) -> (Unknown | tuple[list[tuple[Unknown, Unknown]], list[Unknown]])" cannot be assigned to parameter "cse" of type "bool" in function "lambdify"
+ /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_lambdify.py:2032:45 - error: Argument of type "(e: Unknown) -> (tuple[Unknown, str] | tuple[Unknown | list[tuple[Unknown, Unknown]], list[Unknown] | set[Unknown] | tuple[Unknown, ...]] | tuple[Unknown | list[tuple[Unknown, Unknown]], dict[Unknown, Unknown]] | tuple[Unknown | list[tuple[Unknown, Unknown]], Unknown] | tuple[list[Unknown], Unknown] | tuple[list[tuple[Unknown, Unknown]], list[Unknown]] | Unknown)" cannot be assigned to parameter "cse" of type "bool" in function "lambdify"
- /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_wester.py:1803:43 - error: Cannot access attribute "simplify" for class "tuple[Unknown | Basic | Add | Expr | Mul | Dict, bool]"
... (truncated 17 lines) ...
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… so it supports the case where
xisLiteralStringandLis a string literal. This addresses #10162.