[ty] Rename call-possibly-unbound-method to possibly-unbound-implicit-call (#18017)

Author: InSyncWithFoo

crates/ty/docs/rules.md

@@ -158,10 +158,10 @@ def _(flag: bool) -> None:
             def __new__(cls):
                 return object.__new__(cls)
 
-    # error: [call-possibly-unbound-method]
+    # error: [possibly-unbound-implicit-call]
     reveal_type(Foo())  # revealed: Foo
 
-    # error: [call-possibly-unbound-method]
+    # error: [possibly-unbound-implicit-call]
     # error: [too-many-positional-arguments]
     reveal_type(Foo(1))  # revealed: Foo
 ```

crates/ty_python_semantic/resources/mdtest/call/constructor.md

@@ -112,7 +112,7 @@ def _(flag: bool):
 
     this_fails = ThisFails()
 
-    # error: [call-possibly-unbound-method]
+    # error: [possibly-unbound-implicit-call]
     reveal_type(this_fails[0])  # revealed: Unknown | str
 ```
 
@@ -236,6 +236,6 @@ def _(flag: bool):
                 return str(key)
 
     c = C()
-    # error: [call-possibly-unbound-method]
+    # error: [possibly-unbound-implicit-call]
     reveal_type(c[0])  # revealed: str
 ```

crates/ty_python_semantic/resources/mdtest/call/dunder.md

@@ -63,7 +63,7 @@ def _(flag: bool):
 
     else:
         class Spam: ...
-    # error: [call-possibly-unbound-method] "Method `__class_getitem__` of type `<class 'Spam'> | <class 'Spam'>` is possibly unbound"
+    # error: [possibly-unbound-implicit-call] "Method `__class_getitem__` of type `<class 'Spam'> | <class 'Spam'>` is possibly unbound"
     # revealed: str
     reveal_type(Spam[42])
 ```

crates/ty_python_semantic/resources/mdtest/subscript/class.md

@@ -8,7 +8,7 @@ use bitflags::bitflags;
 use call::{CallDunderError, CallError, CallErrorKind};
 use context::InferContext;
 use diagnostic::{
-    CALL_POSSIBLY_UNBOUND_METHOD, INVALID_CONTEXT_MANAGER, INVALID_SUPER_ARGUMENT, NOT_ITERABLE,
+    INVALID_CONTEXT_MANAGER, INVALID_SUPER_ARGUMENT, NOT_ITERABLE, POSSIBLY_UNBOUND_IMPLICIT_CALL,
     UNAVAILABLE_IMPLICIT_SUPER_ARGUMENTS,
 };
 use ruff_db::diagnostic::{
@@ -6652,7 +6652,7 @@ impl<'db> ConstructorCallError<'db> {
         let report_init_error = |call_dunder_error: &CallDunderError<'db>| match call_dunder_error {
             CallDunderError::MethodNotAvailable => {
                 if let Some(builder) =
-                    context.report_lint(&CALL_POSSIBLY_UNBOUND_METHOD, context_expression_node)
+                    context.report_lint(&POSSIBLY_UNBOUND_IMPLICIT_CALL, context_expression_node)
                 {
                     // If we are using vendored typeshed, it should be impossible to have missing
                     // or unbound `__init__` method on a class, as all classes have `object` in MRO.
@@ -6666,7 +6666,7 @@ impl<'db> ConstructorCallError<'db> {
             }
             CallDunderError::PossiblyUnbound(bindings) => {
                 if let Some(builder) =
-                    context.report_lint(&CALL_POSSIBLY_UNBOUND_METHOD, context_expression_node)
+                    context.report_lint(&POSSIBLY_UNBOUND_IMPLICIT_CALL, context_expression_node)
                 {
                     builder.into_diagnostic(format_args!(
                         "Method `__init__` on type `{}` is possibly unbound.",
@@ -6684,7 +6684,7 @@ impl<'db> ConstructorCallError<'db> {
         let report_new_error = |error: &DunderNewCallError<'db>| match error {
             DunderNewCallError::PossiblyUnbound(call_error) => {
                 if let Some(builder) =
-                    context.report_lint(&CALL_POSSIBLY_UNBOUND_METHOD, context_expression_node)
+                    context.report_lint(&POSSIBLY_UNBOUND_IMPLICIT_CALL, context_expression_node)
                 {
                     builder.into_diagnostic(format_args!(
                         "Method `__new__` on type `{}` is possibly unbound.",

crates/ty_python_semantic/src/types.rs

@@ -24,7 +24,7 @@ use std::fmt::Formatter;
 /// Registers all known type check lints.
 pub(crate) fn register_lints(registry: &mut LintRegistryBuilder) {
     registry.register_lint(&CALL_NON_CALLABLE);
-    registry.register_lint(&CALL_POSSIBLY_UNBOUND_METHOD);
+    registry.register_lint(&POSSIBLY_UNBOUND_IMPLICIT_CALL);
     registry.register_lint(&CONFLICTING_ARGUMENT_FORMS);
     registry.register_lint(&CONFLICTING_DECLARATIONS);
     registry.register_lint(&CONFLICTING_METACLASS);
@@ -107,12 +107,25 @@ declare_lint! {
 
 declare_lint! {
     /// ## What it does
-    /// Checks for calls to possibly unbound methods.
+    /// Checks for implicit calls to possibly unbound methods.
     ///
     /// ## Why is this bad?
+    /// Expressions such as `x[y]` and `x * y` call methods
+    /// under the hood (`__getitem__` and `__mul__` respectively).
     /// Calling an unbound method will raise an `AttributeError` at runtime.
-    pub(crate) static CALL_POSSIBLY_UNBOUND_METHOD = {
-        summary: "detects calls to possibly unbound methods",
+    ///
+    /// ## Examples
+    /// ```python
+    /// import datetime
+    ///
+    /// class A:
+    ///     if datetime.date.today().weekday() != 6:
+    ///         def __getitem__(self, v): ...
+    ///
+    /// A()[0]  # TypeError: 'A' object is not subscriptable
+    /// ```
+    pub(crate) static POSSIBLY_UNBOUND_IMPLICIT_CALL = {
+        summary: "detects implicit calls to possibly unbound methods",
         status: LintStatus::preview("1.0.0"),
         default_level: Level::Warn,
     }

crates/ty_python_semantic/src/types/diagnostic.rs

@@ -67,12 +67,12 @@ use crate::symbol::{
 use crate::types::call::{Argument, Bindings, CallArgumentTypes, CallArguments, CallError};
 use crate::types::class::{MetaclassErrorKind, SliceLiteral};
 use crate::types::diagnostic::{
-    self, CALL_NON_CALLABLE, CALL_POSSIBLY_UNBOUND_METHOD, CONFLICTING_DECLARATIONS,
-    CONFLICTING_METACLASS, CYCLIC_CLASS_DEFINITION, DIVISION_BY_ZERO, INCONSISTENT_MRO,
-    INVALID_ARGUMENT_TYPE, INVALID_ASSIGNMENT, INVALID_ATTRIBUTE_ACCESS, INVALID_BASE,
-    INVALID_DECLARATION, INVALID_GENERIC_CLASS, INVALID_LEGACY_TYPE_VARIABLE,
-    INVALID_PARAMETER_DEFAULT, INVALID_TYPE_ALIAS_TYPE, INVALID_TYPE_FORM,
-    INVALID_TYPE_VARIABLE_CONSTRAINTS, POSSIBLY_UNBOUND_IMPORT, TypeCheckDiagnostics,
+    self, CALL_NON_CALLABLE, CONFLICTING_DECLARATIONS, CONFLICTING_METACLASS,
+    CYCLIC_CLASS_DEFINITION, DIVISION_BY_ZERO, INCONSISTENT_MRO, INVALID_ARGUMENT_TYPE,
+    INVALID_ASSIGNMENT, INVALID_ATTRIBUTE_ACCESS, INVALID_BASE, INVALID_DECLARATION,
+    INVALID_GENERIC_CLASS, INVALID_LEGACY_TYPE_VARIABLE, INVALID_PARAMETER_DEFAULT,
+    INVALID_TYPE_ALIAS_TYPE, INVALID_TYPE_FORM, INVALID_TYPE_VARIABLE_CONSTRAINTS,
+    POSSIBLY_UNBOUND_IMPLICIT_CALL, POSSIBLY_UNBOUND_IMPORT, TypeCheckDiagnostics,
     UNDEFINED_REVEAL, UNRESOLVED_ATTRIBUTE, UNRESOLVED_IMPORT, UNSUPPORTED_OPERATOR,
     report_implicit_return_type, report_invalid_arguments_to_annotated,
     report_invalid_arguments_to_callable, report_invalid_assignment,
@@ -7428,7 +7428,7 @@ impl<'db> TypeInferenceBuilder<'db> {
                     Err(err @ CallDunderError::PossiblyUnbound { .. }) => {
                         if let Some(builder) = self
                             .context
-                            .report_lint(&CALL_POSSIBLY_UNBOUND_METHOD, value_node)
+                            .report_lint(&POSSIBLY_UNBOUND_IMPLICIT_CALL, value_node)
                         {
                             builder.into_diagnostic(format_args!(
                                 "Method `__getitem__` of type `{}` is possibly unbound",
@@ -7476,7 +7476,7 @@ impl<'db> TypeInferenceBuilder<'db> {
                             if boundness == Boundness::PossiblyUnbound {
                                 if let Some(builder) = self
                                     .context
-                                    .report_lint(&CALL_POSSIBLY_UNBOUND_METHOD, value_node)
+                                    .report_lint(&POSSIBLY_UNBOUND_IMPLICIT_CALL, value_node)
                                 {
                                     builder.into_diagnostic(format_args!(
                                         "Method `__class_getitem__` of type `{}` \