macro_rules! from_bytes {

($ty:tt, $value:expr) => {

($ty::from_le_bytes(match ($value).try_into() {

Err(_) => return Err(MirEvalError::TypeError(stringify!(mismatched size in constructing $ty))),

}))

};

}

macro_rules! not_supported {

};

}

impl VTableMap {

fn id(&mut self, ty: Ty) -> usize {

}

let id = self.id_to_ty.len();

self.id_to_ty.push(ty.clone());

const HEAP_OFFSET: usize = 1 << 29;

impl Address {

}

} else {

}

}

fn to_usize(&self) -> usize {

let as_num = match self {

};

as_num

}

fn map(&self, f: impl FnOnce(usize) -> usize) -> Address {

match self {

}

}

fn offset(&self, offset: usize) -> Address {

}

}

let source_map = db.body_with_source_map(*def).1;

let span: InFile<SyntaxNodePtr> = match span {

MirSpan::ExprId(e) => match source_map.expr_syntax(*e) {

Err(_) => continue,

},

MirSpan::PatId(p) => match source_map.pat_syntax(*p) {

Either::Left(e) => e.into(),

Either::Right(e) => e.into(),

}),

impl DropFlags {

fn add_place(&mut self, p: Place) {

return;

}

self.need_drop.insert(p);

}

) -> (Result<Const>, String, String) {

let ty = body.locals[return_slot()].ty.clone();

let mut evaluator = Evaluator::new(db, body, assert_placeholder_ty_is_unused);

if evaluator.ptr_size() != std::mem::size_of::<usize>() {

not_supported!("targets with different pointer size from host");

}

return Ok(intern_const_scalar(ConstScalar::Bytes(bytes, memory_map), ty));

})();

(

String::from_utf8_lossy(&evaluator.stdout).into_owned(),

String::from_utf8_lossy(&evaluator.stderr).into_owned(),

)

fn ptr_size(&self) -> usize {

match self.db.target_data_layout(self.crate_id) {

None => 8,

}

}

} else {

None

};

}

ProjectionElem::Index(op) => {

let offset = from_bytes!(

let offset = if from_end {

let len = match prev_ty.kind(Interner) {

TyKind::Array(_, c) => match try_const_usize(self.db, c) {

None => {

not_supported!("indexing array with unknown const from end")

}

},

TyKind::Slice(_) => match metadata {

None => not_supported!("slice place without metadata"),

},

_ => not_supported!("bad type for const index"),

_ => TyKind::Error.intern(Interner),

};

metadata = match metadata {

Some(IntervalOrOwned::Owned(

(prev_len - from - to).to_le_bytes().to_vec(),

))

Variants::Single { .. } => &layout,

Variants::Multiple { variants, .. } => {

&variants[match f.parent {

}

_ => {

return Err(MirEvalError::TypeError(

body: &MirBody,

args: impl Iterator<Item = Vec<u8>>,

) -> Result<Vec<u8>> {

} else {

return Err(MirEvalError::StackOverflow);

}

let addr = body

.locals

.iter()

let (size, align) = self.size_align_of_sized(

&locals,

"no unsized local in extending stack",

)?;

}

loop {

let current_block = &body.basic_blocks[current_block_idx];

} else {

return Err(MirEvalError::ExecutionLimitExceeded);

}

let fn_ty = self.operand_ty(func, &locals)?;

let args = args

.iter()

.collect::<Result<Vec<_>>>()?;

match &fn_ty.data(Interner).kind {

TyKind::Function(_) => {

terminator.span,

)?;

}

}

locals.drop_flags.add_place(destination.clone());

current_block_idx = target.expect("broken mir, function without target");

fn eval_rvalue(&mut self, r: &Rvalue, locals: &mut Locals<'_>) -> Result<IntervalOrOwned> {

use IntervalOrOwned::*;

Ok(match r {

Rvalue::Ref(_, p) => {

let (addr, _, metadata) = self.place_addr_and_ty_and_metadata(p, locals)?;

let mut r = addr.to_bytes();

c[0] = 1 - c[0];

} else {

match op {

UnOp::Neg => {

for k in c.iter_mut() {

let o;

(*k, o) = k.overflowing_add(1);

};

Owned(r.to_le_bytes().into())

}

),

}

}

};

Owned(r.to_le_bytes().into())

}

),

}

}

let result = self.compute_discriminant(ty, bytes)?;

Owned(result.to_le_bytes().to_vec())

}

let len = match try_const_usize(self.db, &len) {

None => not_supported!("non evaluatable array len in repeat Rvalue"),

};

let size = len * val.len();

Owned(val.iter().copied().cycle().take(size).collect())

}

Rvalue::Aggregate(kind, values) => {

let values = values

.iter()

.collect::<Result<Vec<_>>>()?;

match kind {

AggregateKind::Array(_) => {

let mut r = vec![];

r.extend(value);

}

Owned(r)

layout.size.bytes_usize(),

&layout,

None,

)?)

}

let offset = layout

.fields

.offset(u32::from(f.local_id.into_raw()) as usize)

result[offset..offset + op.len()].copy_from_slice(op);

Owned(result)

}

let (size, variant_layout, tag) =

Owned(self.make_by_layout(

size,

&variant_layout,

tag,

)?)

}

AggregateKind::Closure(ty) => {

layout.size.bytes_usize(),

&layout,

None,

)?)

}

}

as usize;

let variant = variants

.iter_enumerated()

.nth(candidate_tag)

.unwrap_or(*untagged_variant)

.0;

goal: impl Fn(&TyKind) -> Option<T>,

) -> Result<T> {

let kind = ty.kind(Interner);

}

if let TyKind::Adt(id, subst) = kind {

if let AdtId::StructId(struct_id) = id.0 {

let field_types = self.db.field_types(struct_id.into());

let mut field_types = field_types.iter();

if let Some(ty) =

{

return self.coerce_unsized_look_through_fields(&ty, goal);

}

current_ty: &Ty,

target_ty: &Ty,

) -> Result<IntervalOrOwned> {

TyKind::Raw(_, ty) | TyKind::Ref(_, _, ty) => Some(ty.clone()),

_ => None,

}

None => {

not_supported!("unevaluatble len of array in coerce unsized")

}

};

let mut r = Vec::with_capacity(16);

let addr = addr.get(self)?;

fn layout_of_variant(

&mut self,

subst: Substitution,

locals: &Locals<'_>,

) -> Result<(usize, Arc<Layout>, Option<(usize, usize, i128)>)> {

if let DefWithBodyId::VariantId(f) = locals.body.owner {

if AdtId::from(f.parent) == adt {

// Computing the exact size of enums require resolving the enum discriminants. In order to prevent loops (and

// infinite sized type errors) we use a dummy layout

return Ok((16, self.layout(&TyBuilder::unit())?, Some((0, 16, i))));

}

}

.db

.target_data_layout(self.crate_id)

.ok_or(MirEvalError::TargetDataLayoutNotAvailable)?;

_ => not_supported!("multi variant layout for non-enums"),

};

let rustc_enum_variant_idx = RustcEnumVariantIdx(enum_variant_id.local_id);

} else {

discriminant = (variants

.iter_enumerated()

.unwrap() as i128)

.wrapping_add(*niche_start as i128);

true

Ok(result)

}

Operand::Copy(p) | Operand::Move(p) => {

locals.drop_flags.remove_place(p);

self.eval_place(p, locals)?

return Ok(&[]);

}

let (mem, pos) = match addr {

return Err(MirEvalError::UndefinedBehavior(format!(

)));

}

};

return Ok(());

}

let (mem, pos) = match addr {

return Err(MirEvalError::UndefinedBehavior(format!(

)));

}

};

/// be something that complete this: `error: type {ty} was unsized. {what} should be sized`

fn size_of_sized(&self, ty: &Ty, locals: &Locals<'_>, what: &'static str) -> Result<usize> {

match self.size_align_of(ty, locals)? {

None => Err(MirEvalError::TypeIsUnsized(ty.clone(), what)),

}

}

what: &'static str,

) -> Result<(usize, usize)> {

match self.size_align_of(ty, locals)? {

None => Err(MirEvalError::TypeIsUnsized(ty.clone(), what)),

}

}

match size {

Some(_) => {

let current = from_bytes!(usize, self.read_memory(addr, my_size)?);

}

}

None => {

let current = from_bytes!(usize, self.read_memory(addr, my_size / 2)?);

}

}

}

generic_args.clone(),

self.trait_env.clone(),

)

let closure_data = if mir_body.locals[mir_body.param_locals[0]].ty.as_reference().is_some()

{

closure_data.addr.to_bytes()

closure_data.get(self)?.to_owned()

};

let arg_bytes = iter::once(Ok(closure_data))

.collect::<Result<Vec<_>>>()?;

let bytes = self.interpret_mir(&mir_body, arg_bytes.into_iter()).map_err(|e| {

MirEvalError::InFunction(Either::Right(closure), Box::new(e), span, locals.body.owner)

size,

&variant_layout,

tag,

)?;

destination.write_from_bytes(self, &result)?;

}

size,

&variant_layout,

tag,

)?;

destination.write_from_bytes(self, &result)?;

}

return Ok(());

}

let arg_bytes =

if let Some(self_ty_idx) =

is_dyn_method(self.db, self.trait_env.clone(), def, generic_args.clone())

{

ty: ty.clone(),

};

let ty = GenericArgData::Ty(ty.clone()).intern(Interner);

return self.exec_fn_with_args(

def,

&args_for_target,

let arg1 = {

let ty = TyKind::Tuple(

args.len(),

)

.intern(Interner);

let layout = self.layout(&ty)?;

layout.size.bytes_usize(),

&layout,

None,

)?;

// FIXME: there is some leak here

let size = layout.size.bytes_usize();

return Ok(());

}

let metadata = match metadata {

None => vec![],

};

self.run_drop_glue_deep(ty, locals, addr, &metadata, span)

}

}

let fill_with = if is_negative { 255 } else { 0 };

.copied()

.chain(iter::repeat(fill_with))

.take(16)