Enum MetalExpr 

pub enum MetalExpr {
    LitInt(i64),
    LitFloat(f64),
    LitBool(bool),
    Var(String),
    Builtin(MetalBuiltin),
    Index(Box<MetalExpr>, Box<MetalExpr>),
    Member(Box<MetalExpr>, String),
    PtrMember(Box<MetalExpr>, String),
    Cast(MetalType, Box<MetalExpr>),
    Call(String, Vec<MetalExpr>),
    BinOp(Box<MetalExpr>, MetalBinOp, Box<MetalExpr>),
    UnOp(MetalUnOp, Box<MetalExpr>),
    Ternary(Box<MetalExpr>, Box<MetalExpr>, Box<MetalExpr>),
    SimdSum(Box<MetalExpr>),
    SimdShuffleDown(Box<MetalExpr>, Box<MetalExpr>),
    SimdBroadcast(Box<MetalExpr>, Box<MetalExpr>),
    AtomicFetchAdd(Box<MetalExpr>, Box<MetalExpr>),
    ThreadgroupBarrier(MemFlags),
    AsType(MetalType, Box<MetalExpr>),
    Select(Box<MetalExpr>, Box<MetalExpr>, Box<MetalExpr>),
    Dot(Box<MetalExpr>, Box<MetalExpr>),
    Length(Box<MetalExpr>),
    Normalize(Box<MetalExpr>),
    Clamp(Box<MetalExpr>, Box<MetalExpr>, Box<MetalExpr>),
}

Metal Shading Language expression AST node.

Variants

LitInt(i64)

Integer literal

LitFloat(f64)

Float literal

LitBool(bool)

Boolean literal

Var(String)

Named variable

Builtin(MetalBuiltin)

Built-in variable access (used inside shader parameters)

Index(Box<MetalExpr>, Box<MetalExpr>)

Array subscript: arr[idx]

Member(Box<MetalExpr>, String)

Struct member: s.field

PtrMember(Box<MetalExpr>, String)

Pointer member: p->field

Cast(MetalType, Box<MetalExpr>)

C-style cast: (T)expr — MSL also supports static_cast

Call(String, Vec<MetalExpr>)

Function / constructor call: func(args...)

BinOp(Box<MetalExpr>, MetalBinOp, Box<MetalExpr>)

Binary operation

UnOp(MetalUnOp, Box<MetalExpr>)

Unary operation

Ternary(Box<MetalExpr>, Box<MetalExpr>, Box<MetalExpr>)

Ternary conditional: cond ? then : else

SimdSum(Box<MetalExpr>)

simd_sum(val) — warp/simd group reduction

SimdShuffleDown(Box<MetalExpr>, Box<MetalExpr>)

simd_shuffle_down(val, delta)

SimdBroadcast(Box<MetalExpr>, Box<MetalExpr>)

simd_broadcast(val, lane)

AtomicFetchAdd(Box<MetalExpr>, Box<MetalExpr>)

atomic_fetch_add_explicit(&atom, val, order) — simplified

ThreadgroupBarrier(MemFlags)

threadgroup_barrier(mem_flags::mem_device) etc.

AsType(MetalType, Box<MetalExpr>)

as_type<T>(expr) — bitcast

Select(Box<MetalExpr>, Box<MetalExpr>, Box<MetalExpr>)

select(a, b, cond) — component-wise select

Dot(Box<MetalExpr>, Box<MetalExpr>)

dot(a, b) — dot product

Length(Box<MetalExpr>)

length(v) — vector length

Normalize(Box<MetalExpr>)

normalize(v) — vector normalize

Clamp(Box<MetalExpr>, Box<MetalExpr>, Box<MetalExpr>)

clamp(val, lo, hi)

Trait Implementations

impl Clone for MetalExpr

fn clone(&self) -> MetalExpr

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for MetalExpr

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for MetalExpr

fn eq(&self, other: &MetalExpr) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for MetalExpr