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chore(physics): delete unused formulation trait stubs

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Remove the superseded formulation tagging layer not included from `JuliaFEM.jl`.

- Drop `src/physics/formulations.jl`.
This commit is contained in:
Jukka Aho
2026-05-09 18:14:40 +03:00
parent 18c66a925b
commit 0fbf08ef95
1 changed files with 0 additions and 87 deletions
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src/physics/formulations.jl
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# This file is a part of JuliaFEM.
# License is MIT: see https://github.com/JuliaFEM/JuliaFEM.jl/blob/master/LICENSE.md
"""
Helper utilities for multi-field microkernel assembly.
Works with existing Element{K,P,S} system where S is a NamedTuple specifying fields.
# Philosophy
Element{K,P,S} encodes everything:
- K: Topology (Triangle, Tetrahedron, etc.)
- P: Basis (Lagrange{1}, Lagrange{2}, etc.)
- S: NamedTuple of fields with types and entity locations
# Example
```julia
# Thermoelasticity using Element{K,P,S} directly:
S = @DOFSet{T::DOF{Temperature,Vertex}, u::DOF{Displacement{3},Vertex}}
elem = Element{Tet4, Lagrange{1}, S}(id, dof_indices)
# Extract field info (compile-time!):
field_names = fieldnames(S) # (:T, :u)
range_T = field_dof_range(elem, :T) # Compile-time range
```
"""
using ..JuliaFEM: AbstractField, Displacement, Temperature
# ============================================================================
# FIELD TYPE EXTRACTION FROM S (Element{K,P,S})
# ============================================================================
"""
field_type_for_dispatch(S, field_name::Symbol)
Extract field type from Element's S parameter for dispatch.
Works at runtime with NamedTuple-based field specifications.
# Example
```julia
S = @DOFSet{T::DOF{Temperature,Vertex}, u::DOF{Displacement{3},Vertex}}
field_type_for_dispatch(S, :T) # Temperature()
field_type_for_dispatch(S, :u) # Displacement{3}()
```
"""
function field_type_for_dispatch(::Type{S}, field_name::Symbol) where S<:DOFSet
# Get field names at runtime
names = fieldnames(S)
idx = findfirst(==(field_name), names)
isnothing(idx) && error("Field $field_name not found in $S")
# Get the type of that field
field_tuple_type = fieldtype(S, idx)
# field_tuple_type should be DOF{FieldType, EntityType}
# Extract the FieldType (first element)
FieldType = field_tuple_type.parameters[1]
# FieldType must be a field type (AbstractField)
if FieldType <: AbstractField
# Create an instance of the field type
return FieldType()
else
error("Expected field type (AbstractField) in DOF, got $FieldType. Use format: DOF{FieldType, EntityType} where FieldType <: AbstractField")
end
end
# ============================================================================
# CONVENIENCE TYPE ALIASES (for documentation/examples)
# ============================================================================
"""
ThermoelasticityFields
Type alias for common thermoelasticity field specification.
Use as Element{K, P, ThermoelasticityFields} type parameter.
# Example
```julia
const ThermoelasticityFields = @DOFSet{T::DOF{Temperature,Vertex}, u::DOF{Displacement{3},Vertex}}
elem = Element{Tet4, Lagrange{1}, ThermoelasticityFields}(id, dofs)
```
"""
const ThermoelasticityFields = @DOFSet{T::DOF{Temperature,Vertex}, u::DOF{Displacement{3},Vertex}}