19745466658

Committed 27 Nov 2025 06:45PM UTC coverage: 56.188% (+0.7%) from 55.525%

Build # 19745466658

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Pull #935

github

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web-flow

Commit Message

Merge b4bd5e3fa into 9dec07b1e

Pull Request Pull Request #935: Fix CI issues: miri guard, dead code, and feature gate

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52.23

/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> {	1,080✔
82	self.require_active()?;	1,080✔
83
84	let frame = self.frames().last().unwrap();	1,080✔
85	let fields = self.get_fields()?;	1,080✔
86	let Some(idx) = fields.iter().position(\|f\| f.name == field_name) else {	2,222✔
87	return Err(ReflectError::FieldError {	161✔
88	shape: frame.shape,	161✔
89	field_error: facet_core::FieldError::NoSuchField,	161✔
90	});	161✔
91	};
92	self.begin_nth_field(idx)	807✔
93	}	1,080✔
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> {	992✔
99	self.require_active()?;	992✔
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);	992✔
106
107	// Update current_path in deferred mode
108	if let FrameMode::Deferred {
109	stack,	242✔
110	start_depth,	242✔
111	current_path,	242✔
112	stored_frames,	242✔
113	..
114	} = &mut self.mode	992✔
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;	242✔
119	let should_track = current_path.len() == relative_depth;	242✔
120
121	if let Some(name) = field_name {	242✔
122	if should_track {	235✔
123	current_path.push(name);	227✔
124
125	// Check if we have a stored frame for this path
126	if let Some(stored_frame) = stored_frames.remove(current_path) {	227✔
127	trace!(
128	"begin_nth_field: Restoring stored frame for path {:?}",
129	current_path
130	);
131
132	// Update parent's current_child tracking
133	let frame = stack.last_mut().unwrap();	48✔
134	frame.tracker.set_current_child(idx);	48✔
135
136	stack.push(stored_frame);	48✔
137	return Ok(self);	48✔
138	}	179✔
139	}	8✔
140	}	7✔
141	}	750✔
142
143	let frame = self.frames_mut().last_mut().unwrap();	944✔
144
145	let next_frame = match frame.shape.ty {	944✔
146	Type::User(user_type) => match user_type {	899✔
147	UserType::Struct(struct_type) => {	832✔
148	Self::begin_nth_struct_field(frame, struct_type, idx)?	832✔
149	}
150	UserType::Enum(_) => {
151	// Check if we have a variant selected
152	match &frame.tracker {	64✔
153	Tracker::Enum { variant, .. } => {	63✔
154	Self::begin_nth_enum_field(frame, variant, idx)?	63✔
155	}
156	_ => {
157	return Err(ReflectError::OperationFailed {	1✔
158	shape: frame.shape,	1✔
159	operation: "must call select_variant before selecting enum fields",	1✔
160	});	1✔
161	}
162	}
163	}
164	UserType::Union(_) => {
165	return Err(ReflectError::OperationFailed {	×
UNCOV 166	shape: frame.shape,	×
UNCOV 167	operation: "cannot select a field from a union",	×
UNCOV 168	});	×
169	}
170	UserType::Opaque => {
171	return Err(ReflectError::OperationFailed {	3✔
172	shape: frame.shape,	3✔
173	operation: "cannot select a field from an opaque type",	3✔
174	});	3✔
175	}
176	},
177	Type::Sequence(sequence_type) => match sequence_type {	44✔
178	SequenceType::Array(array_type) => {	44✔
179	Self::begin_nth_array_element(frame, array_type, idx)?	44✔
180	}
181	SequenceType::Slice(_) => {
182	return Err(ReflectError::OperationFailed {	×
UNCOV 183	shape: frame.shape,	×
UNCOV 184	operation: "cannot select a field from slices yet",	×
UNCOV 185	});	×
186	}
187	},
188	_ => {
189	return Err(ReflectError::OperationFailed {	1✔
190	shape: frame.shape,	1✔
191	operation: "cannot select a field from this type",	1✔
192	});	1✔
193	}
194	};
195
196	self.frames_mut().push(next_frame);	916✔
197	Ok(self)	916✔
198	}	992✔
199
200	/// Get the field name for path tracking (used in deferred mode)
201	fn get_field_name_for_path(&self, idx: usize) -> Option<&'static str> {	992✔
202	let frame = self.frames().last()?;	992✔
203	match frame.shape.ty {	947✔
204	Type::User(UserType::Struct(struct_type)) => {	880✔
205	struct_type.fields.get(idx).map(\|f\| f.name)	880✔
206	}
207	Type::User(UserType::Enum(_)) => {
208	if let Tracker::Enum { variant, .. } = &frame.tracker {	64✔
209	variant.data.fields.get(idx).map(\|f\| f.name)	63✔
210	} else {
211	None	1✔
212	}
213	}
214	// For arrays, we could use index as string, but for now return None
215	_ => None,	48✔
216	}
217	}	992✔
218
219	/// Sets the given field to its default value, preferring:
220	///
221	/// * A `default = some_fn()` function
222	/// * The field's `Default` implementation if any
223	///
224	/// But without going all the way up to the parent struct's `Default` impl.
225	///
226	/// Errors out if idx is out of bound, if the field has no default method or Default impl.
227	pub fn set_nth_field_to_default(&mut self, idx: usize) -> Result<&mut Self, ReflectError> {	×
228	self.require_active()?;	×
229
230	let frame = self.frames().last().unwrap();	×
231	let fields = self.get_fields()?;	×
232
233	if idx >= fields.len() {	×
234	return Err(ReflectError::OperationFailed {	×
235	shape: frame.shape,	×
UNCOV 236	operation: "field index out of bounds",	×
237	});	×
UNCOV 238	}	×
239
240	let field = fields[idx];	×
241
242	// Check for field-level default function first, then type-level default
UNCOV 243	if let Some(field_default_fn) = field.vtable.default_fn {	×
244	self.begin_nth_field(idx)?;	×
245	// the field default fn should be well-behaved
246	unsafe {
247	self.set_from_function(\|ptr\| {	×
UNCOV 248	field_default_fn(ptr);	×
249	Ok(())	×
250	})?;	×
251	}
252	self.end()	×
253	} else if field.shape().is(Characteristic::Default) {	×
UNCOV 254	self.begin_nth_field(idx)?;	×
255	self.set_default()?;	×
256	self.end()	×
257	} else {
UNCOV 258	return Err(ReflectError::DefaultAttrButNoDefaultImpl {	×
259	shape: field.shape(),	×
UNCOV 260	});	×
261	}
UNCOV 262	}	×
263
264	/// Given a `Partial` for the same shape, and assuming that partial has the nth
265	/// field initialized, move the value from `src` to `self`, marking it as deinitialized
266	/// in `src`.
267	pub fn steal_nth_field(	2✔
268	&mut self,	2✔
269	src: &mut Partial,	2✔
270	field_index: usize,	2✔
271	) -> Result<&mut Self, ReflectError> {	2✔
272	let dst_shape = self.shape();	2✔
273	let src_shape = src.shape();	2✔
274	if dst_shape != src_shape {	2✔
275	return Err(ReflectError::HeistCancelledDifferentShapes {	×
UNCOV 276	src_shape,	×
UNCOV 277	dst_shape,	×
UNCOV 278	});	×
279	}	2✔
280
281	// FIXME: what about enums? we don't check that the right variant is
282	// selected here.
283	if !src.is_field_set(field_index)? {	2✔
UNCOV 284	return Err(ReflectError::InvariantViolation {	×
UNCOV 285	invariant: "stolen field must be initialized",	×
UNCOV 286	});	×
287	}	2✔
288
289	let maybe_fields = match src_shape.ty {	2✔
UNCOV 290	Type::Primitive(_primitive_type) => None,	×
291	Type::Sequence(_sequence_type) => None,	×
292	Type::User(user_type) => match user_type {	2✔
293	UserType::Struct(struct_type) => Some(struct_type.fields),	2✔
294	UserType::Enum(_enum_type) => match self.selected_variant() {	×
295	Some(variant) => Some(variant.data.fields),	×
296	None => {
UNCOV 297	return Err(ReflectError::InvariantViolation {	×
UNCOV 298	invariant: "enum field thief must have variant selected",	×
299	});	×
300	}
301	},
302	UserType::Union(_union_type) => None,	×
UNCOV 303	UserType::Opaque => None,	×
304	},
UNCOV 305	Type::Pointer(_pointer_type) => None,	×
306	};
307
308	let Some(fields) = maybe_fields else {	2✔
309	return Err(ReflectError::OperationFailed {	×
UNCOV 310	shape: src_shape,	×
UNCOV 311	operation: "fetching field list for steal_nth_field",	×
UNCOV 312	});	×
313	};
314
315	if field_index >= fields.len() {	2✔
316	return Err(ReflectError::OperationFailed {	×
UNCOV 317	shape: src_shape,	×
UNCOV 318	operation: "field index out of bounds",	×
UNCOV 319	});	×
320	}	2✔
321	let field = fields[field_index];	2✔
322
323	let src_frame = src.frames_mut().last_mut().unwrap();	2✔
324
325	self.begin_nth_field(field_index)?;	2✔
326	unsafe {
327	self.set_from_function(\|dst_field_ptr\| {	2✔
328	let src_field_ptr = src_frame.data.field_init_at(field.offset).as_const();	2✔
329	dst_field_ptr	2✔
330	.copy_from(src_field_ptr, field.shape())	2✔
331	.unwrap();	2✔
332	Ok(())	2✔
333	})?;	2✔
334	}
335	self.end()?;	2✔
336
337	// now mark field as uninitialized in `src`
338	match &mut src_frame.tracker {	2✔
339	Tracker::Uninit => {
UNCOV 340	unreachable!("we just stole a field from src, it couldn't have been fully uninit")	×
341	}
342	Tracker::Init => {
343	// all struct fields were init so we don't even have a struct tracker,
344	// let's make one!
345	let mut iset = ISet::new(fields.len());	1✔
346	iset.set_all();	1✔
347	iset.unset(field_index);	1✔
348	src_frame.tracker = Tracker::Struct {	1✔
349	iset,	1✔
350	current_child: None,	1✔
351	}	1✔
352	}
UNCOV 353	Tracker::Array { .. } => unreachable!("can't steal fields from arrays"),	×
354	Tracker::Struct { iset, .. } => {	1✔
355	iset.unset(field_index);	1✔
356	}	1✔
357	Tracker::SmartPointer { .. } => {
358	unreachable!("can't steal fields from smart pointers")	×
359	}
360	Tracker::SmartPointerSlice { .. } => {
361	unreachable!("can't steal fields from smart pointer slices")	×
362	}
UNCOV 363	Tracker::Enum { data, .. } => {	×
364	data.unset(field_index);	×
UNCOV 365	}	×
366	Tracker::List { .. } => {
367	unreachable!("can't steal fields from lists")	×
368	}
369	Tracker::Map { .. } => {
370	unreachable!("can't steal fields from maps")	×
371	}
372	Tracker::Set { .. } => {
373	unreachable!("can't steal fields from sets")	×
374	}
375	Tracker::Option { .. } => {
UNCOV 376	unreachable!("can't steal fields from options")	×
377	}
378	}
379
380	Ok(self)	2✔
381	}	2✔
382	}

facet-rs / facet / 19745466658

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