19746156966

Committed 27 Nov 2025 07:23PM UTC coverage: 57.343% (+1.2%) from 56.098%

Build # 19746156966

Build Type

push

github

Committed by

fasterthanlime

Commit Message

Gate proptest fuzz tests behind fuzz-tests feature

These tests are very slow (1000+ cases with complex operations) and
shouldn't run in CI. Run manually with:
  cargo nextest run -p facet-reflect --features fuzz-tests

Run Details

6825 of 11902 relevant lines covered (57.34%)

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Source File
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46.43

/facet-reflect/src/partial/partial_api/fields.rs

use super::*;

////////////////////////////////////////////////////////////////////////////////////////////////////
// Field selection
////////////////////////////////////////////////////////////////////////////////////////////////////
impl Partial<'_> {
    /// Find the index of a field by name in the current struct
    ///
    /// If the current frame isn't a struct or an enum (with a selected variant)
    /// then this returns `None` for sure.
    pub fn field_index(&self, field_name: &str) -> Option<usize> {
        let frame = self.frames().last()?;

        match frame.shape.ty {
            Type::User(UserType::Struct(struct_def)) => {
                struct_def.fields.iter().position(|f| f.name == field_name)
            }
            Type::User(UserType::Enum(_)) => {
                // If we're in an enum variant, check its fields
                if let Tracker::Enum { variant, .. } = &frame.tracker {
                    variant
                        .data
                        .fields
                        .iter()
                        .position(|f| f.name == field_name)
                } else {
                    None
                }
            }
            _ => None,
        }
    }

    /// Check if a struct field at the given index has been set
    pub fn is_field_set(&self, index: usize) -> Result<bool, ReflectError> {
        let frame = self.frames().last().ok_or(ReflectError::NoActiveFrame)?;

        match &frame.tracker {
            Tracker::Uninit => Ok(false),
            Tracker::Init => Ok(true),
            Tracker::Struct { iset, .. } => Ok(iset.get(index)),
            Tracker::Enum { data, variant, .. } => {
                // Check if the field is already marked as set
                if data.get(index) {
                    return Ok(true);
                }

                // For enum variant fields that are empty structs, they are always initialized
                if let Some(field) = variant.data.fields.get(index) {
                    if let Type::User(UserType::Struct(field_struct)) = field.shape().ty {
                        if field_struct.fields.is_empty() {
                            return Ok(true);
                        }
                    }
                }

                Ok(false)
            }
            Tracker::Option { building_inner } => {
                // For Options, index 0 represents the inner value
                if index == 0 {
                    Ok(!building_inner)
                } else {
                    Err(ReflectError::InvalidOperation {
                        operation: "is_field_set",
                        reason: "Option only has one field (index 0)",
                    })
                }
            }
            _ => Err(ReflectError::InvalidOperation {
                operation: "is_field_set",
                reason: "Current frame is not a struct, enum variant, or option",
            }),
        }
    }

    /// Selects a field (by name) of a struct or enum data.
    ///
    /// For enums, the variant needs to be selected first, see [Self::select_nth_variant]
    /// and friends.
    pub fn begin_field(&mut self, field_name: &str) -> Result<&mut Self, ReflectError> {
        self.require_active()?;

        let frame = self.frames().last().unwrap();
        let fields = self.get_fields()?;
        let Some(idx) = fields.iter().position(|f| f.name == field_name) else {
            return Err(ReflectError::FieldError {
                shape: frame.shape,
                field_error: facet_core::FieldError::NoSuchField,
            });
        };
        self.begin_nth_field(idx)
    }

    /// Begins the nth field of a struct, enum variant, or array, by index.
    ///
    /// On success, this pushes a new frame which must be ended with a call to [Partial::end]
    pub fn begin_nth_field(&mut self, idx: usize) -> Result<&mut Self, ReflectError> {
        self.require_active()?;

        // In deferred mode, get the field name for path tracking and check for stored frames.
        // Only track the path if we're at a "navigable" level - i.e., the path length matches
        // the expected depth (frames.len() - 1). If we're inside a collection item, the path
        // will be shorter than expected, so we shouldn't add to it.
        let field_name = self.get_field_name_for_path(idx);

        // Update current_path in deferred mode
        if let FrameMode::Deferred {
            stack,
            start_depth,
            current_path,
            stored_frames,
            ..
        } = &mut self.mode
        {
            // Only track path if we're at the expected navigable depth
            // Path should have (frames.len() - start_depth) entries before we add this field
            let relative_depth = stack.len() - *start_depth;
            let should_track = current_path.len() == relative_depth;

            if let Some(name) = field_name {
                if should_track {
                    current_path.push(name);

                    // Check if we have a stored frame for this path
                    if let Some(stored_frame) = stored_frames.remove(current_path) {
                        trace!("begin_nth_field: Restoring stored frame for path {current_path:?}");

                        // Update parent's current_child tracking
                        let frame = stack.last_mut().unwrap();
                        frame.tracker.set_current_child(idx);

                        stack.push(stored_frame);
                        return Ok(self);
                    }
                }
            }
        }

        let frame = self.frames_mut().last_mut().unwrap();

        let next_frame = match frame.shape.ty {
            Type::User(user_type) => match user_type {
                UserType::Struct(struct_type) => {
                    Self::begin_nth_struct_field(frame, struct_type, idx)?
                }
                UserType::Enum(_) => {
                    // Check if we have a variant selected
                    match &frame.tracker {
                        Tracker::Enum { variant, .. } => {
                            Self::begin_nth_enum_field(frame, variant, idx)?
                        }
                        _ => {
                            return Err(ReflectError::OperationFailed {
                                shape: frame.shape,
                                operation: "must call select_variant before selecting enum fields",
                            });
                        }
                    }
                }
                UserType::Union(_) => {
                    return Err(ReflectError::OperationFailed {
                        shape: frame.shape,
                        operation: "cannot select a field from a union",
                    });
                }
                UserType::Opaque => {
                    return Err(ReflectError::OperationFailed {
                        shape: frame.shape,
                        operation: "cannot select a field from an opaque type",
                    });
                }
            },
            Type::Sequence(sequence_type) => match sequence_type {
                SequenceType::Array(array_type) => {
                    Self::begin_nth_array_element(frame, array_type, idx)?
                }
                SequenceType::Slice(_) => {
                    return Err(ReflectError::OperationFailed {
                        shape: frame.shape,
                        operation: "cannot select a field from slices yet",
                    });
                }
            },
            _ => {
                return Err(ReflectError::OperationFailed {
                    shape: frame.shape,
                    operation: "cannot select a field from this type",
                });
            }
        };

        self.frames_mut().push(next_frame);
        Ok(self)
    }

    /// Get the field name for path tracking (used in deferred mode)
    fn get_field_name_for_path(&self, idx: usize) -> Option<&'static str> {
        let frame = self.frames().last()?;
        match frame.shape.ty {
            Type::User(UserType::Struct(struct_type)) => {
                struct_type.fields.get(idx).map(|f| f.name)
            }
            Type::User(UserType::Enum(_)) => {
                if let Tracker::Enum { variant, .. } = &frame.tracker {
                    variant.data.fields.get(idx).map(|f| f.name)
                } else {
                    None
                }
            }
            // For arrays, we could use index as string, but for now return None
            _ => None,
        }
    }

    /// Sets the given field to its default value, preferring:
    ///
    ///   * A `default = some_fn()` function
    ///   * The field's `Default` implementation if any
    ///
    /// But without going all the way up to the parent struct's `Default` impl.
    ///
    /// Errors out if idx is out of bound, if the field has no default method or Default impl.
    pub fn set_nth_field_to_default(&mut self, idx: usize) -> Result<&mut Self, ReflectError> {
        self.require_active()?;

        let frame = self.frames().last().unwrap();
        let fields = self.get_fields()?;

        if idx >= fields.len() {
            return Err(ReflectError::OperationFailed {
                shape: frame.shape,
                operation: "field index out of bounds",
            });
        }

        let field = fields[idx];

        // Check for field-level default function first, then type-level default
        if let Some(field_default_fn) = field.vtable.default_fn {
            self.begin_nth_field(idx)?;
            // the field default fn should be well-behaved
            unsafe {
                self.set_from_function(|ptr| {
                    field_default_fn(ptr);
                    Ok(())
                })?;
            }
            self.end()
        } else if field.shape().is(Characteristic::Default) {
            self.begin_nth_field(idx)?;
            self.set_default()?;
            self.end()
        } else {
            return Err(ReflectError::DefaultAttrButNoDefaultImpl {
                shape: field.shape(),
            });
        }
    }

    /// Given a `Partial` for the same shape, and assuming that partial has the nth
    /// field initialized, move the value from `src` to `self`, marking it as deinitialized
    /// in `src`.
    pub fn steal_nth_field(
        &mut self,
        src: &mut Partial,
        field_index: usize,
    ) -> Result<&mut Self, ReflectError> {
        let dst_shape = self.shape();
        let src_shape = src.shape();
        if dst_shape != src_shape {
            return Err(ReflectError::HeistCancelledDifferentShapes {
                src_shape,
                dst_shape,
            });
        }

        // FIXME: what about enums? we don't check that the right variant is
        // selected here.
        if !src.is_field_set(field_index)? {
            return Err(ReflectError::InvariantViolation {
                invariant: "stolen field must be initialized",
            });
        }

        let maybe_fields = match src_shape.ty {
            Type::Primitive(_primitive_type) => None,
            Type::Sequence(_sequence_type) => None,
            Type::User(user_type) => match user_type {
                UserType::Struct(struct_type) => Some(struct_type.fields),
                UserType::Enum(_enum_type) => match self.selected_variant() {
                    Some(variant) => Some(variant.data.fields),
                    None => {
                        return Err(ReflectError::InvariantViolation {
                            invariant: "enum field thief must have variant selected",
                        });
                    }
                },
                UserType::Union(_union_type) => None,
                UserType::Opaque => None,
            },
            Type::Pointer(_pointer_type) => None,
        };

        let Some(fields) = maybe_fields else {
            return Err(ReflectError::OperationFailed {
                shape: src_shape,
                operation: "fetching field list for steal_nth_field",
            });
        };

        if field_index >= fields.len() {
            return Err(ReflectError::OperationFailed {
                shape: src_shape,
                operation: "field index out of bounds",
            });
        }
        let field = fields[field_index];

        let src_frame = src.frames_mut().last_mut().unwrap();

        self.begin_nth_field(field_index)?;
        unsafe {
            self.set_from_function(|dst_field_ptr| {
                let src_field_ptr = src_frame.data.field_init_at(field.offset).as_const();
                dst_field_ptr
                    .copy_from(src_field_ptr, field.shape())
                    .unwrap();
                Ok(())
            })?;
        }
        self.end()?;

        // now mark field as uninitialized in `src`
        match &mut src_frame.tracker {
            Tracker::Uninit => {
                unreachable!("we just stole a field from src, it couldn't have been fully uninit")
            }
            Tracker::Init => {
                // all struct fields were init so we don't even have a struct tracker,
                // let's make one!
                let mut iset = ISet::new(fields.len());
                iset.set_all();
                iset.unset(field_index);
                src_frame.tracker = Tracker::Struct {
                    iset,
                    current_child: None,
                }
            }
            Tracker::Array { .. } => unreachable!("can't steal fields from arrays"),
            Tracker::Struct { iset, .. } => {
                iset.unset(field_index);
            }
            Tracker::SmartPointer { .. } => {
                unreachable!("can't steal fields from smart pointers")
            }
            Tracker::SmartPointerSlice { .. } => {
                unreachable!("can't steal fields from smart pointer slices")
            }
            Tracker::Enum { data, .. } => {
                data.unset(field_index);
            }
            Tracker::List { .. } => {
                unreachable!("can't steal fields from lists")
            }
            Tracker::Map { .. } => {
                unreachable!("can't steal fields from maps")
            }
            Tracker::Set { .. } => {
                unreachable!("can't steal fields from sets")
            }
            Tracker::Option { .. } => {
                unreachable!("can't steal fields from options")
            }
        }

        Ok(self)
    }
}

1	use super::*;
2
3	////////////////////////////////////////////////////////////////////////////////////////////////////
4	// Field selection
5	////////////////////////////////////////////////////////////////////////////////////////////////////
6	impl Partial<'_> {
7	/// Find the index of a field by name in the current struct
8	///
9	/// If the current frame isn't a struct or an enum (with a selected variant)
10	/// then this returns `None` for sure.
11	pub fn field_index(&self, field_name: &str) -> Option<usize> {	×
12	let frame = self.frames().last()?;	×
13
14	match frame.shape.ty {	×
15	Type::User(UserType::Struct(struct_def)) => {	×
16	struct_def.fields.iter().position(\|f\| f.name == field_name)	×
17	}
18	Type::User(UserType::Enum(_)) => {
19	// If we're in an enum variant, check its fields
20	if let Tracker::Enum { variant, .. } = &frame.tracker {	×
21	variant	×
22	.data	×
23	.fields	×
24	.iter()	×
25	.position(\|f\| f.name == field_name)	×
26	} else {
27	None	×
28	}
29	}
30	_ => None,	×
31	}
32	}	×
33
34	/// Check if a struct field at the given index has been set
35	pub fn is_field_set(&self, index: usize) -> Result<bool, ReflectError> {	22✔
36	let frame = self.frames().last().ok_or(ReflectError::NoActiveFrame)?;	22✔
37
38	match &frame.tracker {	22✔
39	Tracker::Uninit => Ok(false),	13✔
40	Tracker::Init => Ok(true),	2✔
41	Tracker::Struct { iset, .. } => Ok(iset.get(index)),	7✔
42	Tracker::Enum { data, variant, .. } => {	×
43	// Check if the field is already marked as set
44	if data.get(index) {	×
45	return Ok(true);	×
46	}	×
47
48	// For enum variant fields that are empty structs, they are always initialized
49	if let Some(field) = variant.data.fields.get(index) {	×
50	if let Type::User(UserType::Struct(field_struct)) = field.shape().ty {	×
51	if field_struct.fields.is_empty() {	×
52	return Ok(true);	×
53	}	×
54	}	×
55	}	×
56
57	Ok(false)	×
58	}
59	Tracker::Option { building_inner } => {	×
60	// For Options, index 0 represents the inner value
61	if index == 0 {	×
62	Ok(!building_inner)	×
63	} else {
64	Err(ReflectError::InvalidOperation {	×
65	operation: "is_field_set",	×
66	reason: "Option only has one field (index 0)",	×
67	})	×
68	}
69	}
70	_ => Err(ReflectError::InvalidOperation {	×
71	operation: "is_field_set",	×
72	reason: "Current frame is not a struct, enum variant, or option",	×
73	}),	×
74	}
75	}	22✔
76
77	/// Selects a field (by name) of a struct or enum data.
78	///
79	/// For enums, the variant needs to be selected first, see [Self::select_nth_variant]
80	/// and friends.
81	pub fn begin_field(&mut self, field_name: &str) -> Result<&mut Self, ReflectError> {	401✔
82	self.require_active()?;	401✔
83
84	let frame = self.frames().last().unwrap();	401✔
85	let fields = self.get_fields()?;	401✔
86	let Some(idx) = fields.iter().position(\|f\| f.name == field_name) else {	611✔
87	return Err(ReflectError::FieldError {	4✔
88	shape: frame.shape,	4✔
89	field_error: facet_core::FieldError::NoSuchField,	4✔
90	});	4✔
91	};
92	self.begin_nth_field(idx)	395✔
93	}	401✔
94
95	/// Begins the nth field of a struct, enum variant, or array, by index.
96	///
97	/// On success, this pushes a new frame which must be ended with a call to [Partial::end]
98	pub fn begin_nth_field(&mut self, idx: usize) -> Result<&mut Self, ReflectError> {	507✔
99	self.require_active()?;	507✔
100
101	// In deferred mode, get the field name for path tracking and check for stored frames.
102	// Only track the path if we're at a "navigable" level - i.e., the path length matches
103	// the expected depth (frames.len() - 1). If we're inside a collection item, the path
104	// will be shorter than expected, so we shouldn't add to it.
105	let field_name = self.get_field_name_for_path(idx);	507✔
106
107	// Update current_path in deferred mode
108	if let FrameMode::Deferred {
109	stack,	229✔
110	start_depth,	229✔
111	current_path,	229✔
112	stored_frames,	229✔
113	..
114	} = &mut self.mode	507✔
115	{
116	// Only track path if we're at the expected navigable depth
117	// Path should have (frames.len() - start_depth) entries before we add this field
118	let relative_depth = stack.len() - *start_depth;	229✔
119	let should_track = current_path.len() == relative_depth;	229✔
120
121	if let Some(name) = field_name {	229✔
122	if should_track {	223✔
123	current_path.push(name);	215✔
124
125	// Check if we have a stored frame for this path
126	if let Some(stored_frame) = stored_frames.remove(current_path) {	215✔
127	trace!("begin_nth_field: Restoring stored frame for path {current_path:?}");
128
129	// Update parent's current_child tracking
130	let frame = stack.last_mut().unwrap();	47✔
131	frame.tracker.set_current_child(idx);	47✔
132
133	stack.push(stored_frame);	47✔
134	return Ok(self);	47✔
135	}	168✔
136	}	8✔
137	}	6✔
138	}	278✔
139
140	let frame = self.frames_mut().last_mut().unwrap();	460✔
141
142	let next_frame = match frame.shape.ty {	460✔
143	Type::User(user_type) => match user_type {	416✔
144	UserType::Struct(struct_type) => {	354✔
145	Self::begin_nth_struct_field(frame, struct_type, idx)?	354✔
146	}
147	UserType::Enum(_) => {
148	// Check if we have a variant selected
149	match &frame.tracker {	62✔
150	Tracker::Enum { variant, .. } => {	62✔
151	Self::begin_nth_enum_field(frame, variant, idx)?	62✔
152	}
153	_ => {
154	return Err(ReflectError::OperationFailed {	×
155	shape: frame.shape,	×
156	operation: "must call select_variant before selecting enum fields",	×
157	});	×
158	}
159	}
160	}
161	UserType::Union(_) => {
162	return Err(ReflectError::OperationFailed {	×
163	shape: frame.shape,	×
164	operation: "cannot select a field from a union",	×
165	});	×
166	}
167	UserType::Opaque => {
168	return Err(ReflectError::OperationFailed {	×
169	shape: frame.shape,	×
170	operation: "cannot select a field from an opaque type",	×
171	});	×
172	}
173	},
174	Type::Sequence(sequence_type) => match sequence_type {	44✔
175	SequenceType::Array(array_type) => {	44✔
176	Self::begin_nth_array_element(frame, array_type, idx)?	44✔
177	}
178	SequenceType::Slice(_) => {
179	return Err(ReflectError::OperationFailed {	×
180	shape: frame.shape,	×
181	operation: "cannot select a field from slices yet",	×
182	});	×
183	}
184	},
185	_ => {
186	return Err(ReflectError::OperationFailed {	×
187	shape: frame.shape,	×
188	operation: "cannot select a field from this type",	×
189	});	×
190	}
191	};
192
193	self.frames_mut().push(next_frame);	459✔
194	Ok(self)	459✔
195	}	507✔
196
197	/// Get the field name for path tracking (used in deferred mode)
198	fn get_field_name_for_path(&self, idx: usize) -> Option<&'static str> {	507✔
199	let frame = self.frames().last()?;	507✔
200	match frame.shape.ty {	463✔
201	Type::User(UserType::Struct(struct_type)) => {	401✔
202	struct_type.fields.get(idx).map(\|f\| f.name)	401✔
203	}
204	Type::User(UserType::Enum(_)) => {
205	if let Tracker::Enum { variant, .. } = &frame.tracker {	62✔
206	variant.data.fields.get(idx).map(\|f\| f.name)	62✔
207	} else {
208	None	×
209	}
210	}
211	// For arrays, we could use index as string, but for now return None
212	_ => None,	44✔
213	}
214	}	507✔
215
216	/// Sets the given field to its default value, preferring:
217	///
218	/// * A `default = some_fn()` function
219	/// * The field's `Default` implementation if any
220	///
221	/// But without going all the way up to the parent struct's `Default` impl.
222	///
223	/// Errors out if idx is out of bound, if the field has no default method or Default impl.
224	pub fn set_nth_field_to_default(&mut self, idx: usize) -> Result<&mut Self, ReflectError> {	×
225	self.require_active()?;	×
226
227	let frame = self.frames().last().unwrap();	×
228	let fields = self.get_fields()?;	×
229
230	if idx >= fields.len() {	×
231	return Err(ReflectError::OperationFailed {	×
232	shape: frame.shape,	×
233	operation: "field index out of bounds",	×
234	});	×
235	}	×
236
237	let field = fields[idx];	×
238
239	// Check for field-level default function first, then type-level default
240	if let Some(field_default_fn) = field.vtable.default_fn {	×
241	self.begin_nth_field(idx)?;	×
242	// the field default fn should be well-behaved
243	unsafe {
244	self.set_from_function(\|ptr\| {	×
245	field_default_fn(ptr);	×
246	Ok(())	×
247	})?;	×
248	}
249	self.end()	×
250	} else if field.shape().is(Characteristic::Default) {	×
251	self.begin_nth_field(idx)?;	×
252	self.set_default()?;	×
253	self.end()	×
254	} else {
255	return Err(ReflectError::DefaultAttrButNoDefaultImpl {	×
256	shape: field.shape(),	×
257	});	×
258	}
259	}	×
260
261	/// Given a `Partial` for the same shape, and assuming that partial has the nth
262	/// field initialized, move the value from `src` to `self`, marking it as deinitialized
263	/// in `src`.
264	pub fn steal_nth_field(	2✔
265	&mut self,	2✔
266	src: &mut Partial,	2✔
267	field_index: usize,	2✔
268	) -> Result<&mut Self, ReflectError> {	2✔
269	let dst_shape = self.shape();	2✔
270	let src_shape = src.shape();	2✔
271	if dst_shape != src_shape {	2✔
272	return Err(ReflectError::HeistCancelledDifferentShapes {	×
273	src_shape,	×
274	dst_shape,	×
275	});	×
276	}	2✔
277
278	// FIXME: what about enums? we don't check that the right variant is
279	// selected here.
280	if !src.is_field_set(field_index)? {	2✔
281	return Err(ReflectError::InvariantViolation {	×
282	invariant: "stolen field must be initialized",	×
283	});	×
284	}	2✔
285
286	let maybe_fields = match src_shape.ty {	2✔
287	Type::Primitive(_primitive_type) => None,	×
288	Type::Sequence(_sequence_type) => None,	×
289	Type::User(user_type) => match user_type {	2✔
290	UserType::Struct(struct_type) => Some(struct_type.fields),	2✔
291	UserType::Enum(_enum_type) => match self.selected_variant() {	×
292	Some(variant) => Some(variant.data.fields),	×
293	None => {
294	return Err(ReflectError::InvariantViolation {	×
295	invariant: "enum field thief must have variant selected",	×
296	});	×
297	}
298	},
299	UserType::Union(_union_type) => None,	×
300	UserType::Opaque => None,	×
301	},
302	Type::Pointer(_pointer_type) => None,	×
303	};
304
305	let Some(fields) = maybe_fields else {	2✔
306	return Err(ReflectError::OperationFailed {	×
307	shape: src_shape,	×
308	operation: "fetching field list for steal_nth_field",	×
309	});	×
310	};
311
312	if field_index >= fields.len() {	2✔
313	return Err(ReflectError::OperationFailed {	×
314	shape: src_shape,	×
315	operation: "field index out of bounds",	×
316	});	×
317	}	2✔
318	let field = fields[field_index];	2✔
319
320	let src_frame = src.frames_mut().last_mut().unwrap();	2✔
321
322	self.begin_nth_field(field_index)?;	2✔
323	unsafe {
324	self.set_from_function(\|dst_field_ptr\| {	2✔
325	let src_field_ptr = src_frame.data.field_init_at(field.offset).as_const();	2✔
326	dst_field_ptr	2✔
327	.copy_from(src_field_ptr, field.shape())	2✔
328	.unwrap();	2✔
329	Ok(())	2✔
330	})?;	2✔
331	}
332	self.end()?;	2✔
333
334	// now mark field as uninitialized in `src`
335	match &mut src_frame.tracker {	2✔
336	Tracker::Uninit => {
337	unreachable!("we just stole a field from src, it couldn't have been fully uninit")	×
338	}
339	Tracker::Init => {
340	// all struct fields were init so we don't even have a struct tracker,
341	// let's make one!
342	let mut iset = ISet::new(fields.len());	1✔
343	iset.set_all();	1✔
344	iset.unset(field_index);	1✔
345	src_frame.tracker = Tracker::Struct {	1✔
346	iset,	1✔
347	current_child: None,	1✔
348	}	1✔
349	}
350	Tracker::Array { .. } => unreachable!("can't steal fields from arrays"),	×
351	Tracker::Struct { iset, .. } => {	1✔
352	iset.unset(field_index);	1✔
353	}	1✔
354	Tracker::SmartPointer { .. } => {
355	unreachable!("can't steal fields from smart pointers")	×
356	}
357	Tracker::SmartPointerSlice { .. } => {
358	unreachable!("can't steal fields from smart pointer slices")	×
359	}
360	Tracker::Enum { data, .. } => {	×
361	data.unset(field_index);	×
362	}	×
363	Tracker::List { .. } => {
364	unreachable!("can't steal fields from lists")	×
365	}
366	Tracker::Map { .. } => {
367	unreachable!("can't steal fields from maps")	×
368	}
369	Tracker::Set { .. } => {
370	unreachable!("can't steal fields from sets")	×
371	}
372	Tracker::Option { .. } => {
373	unreachable!("can't steal fields from options")	×
374	}
375	}
376
377	Ok(self)	2✔
378	}	2✔
379	}

facet-rs / facet / 19746156966

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