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feat(starknet_os): implement set decompressed dst hint #4666

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feat(starknet_os): implement set decompressed dst hint #4666

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16 changes: 14 additions & 2 deletions crates/starknet_os/src/hints/hint_implementation/stateless_compression/implementation.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@ use std::collections::HashMap;

use blockifier::state::state_api::StateReader;
use cairo_vm::hint_processor::builtin_hint_processor::hint_utils::{
get_integer_from_var_name,
get_maybe_relocatable_from_var_name,
get_ptr_from_var_name,
insert_value_from_var_name,
Expand Down Expand Up @@ -62,7 +63,18 @@ pub(crate) fn compression_hint<S: StateReader>(
}

pub(crate) fn set_decompressed_dst<S: StateReader>(
HintArgs { .. }: HintArgs<'_, S>,
HintArgs { vm, ids_data, ap_tracking, .. }: HintArgs<'_, S>,
) -> OsHintResult {
todo!()
let decompressed_dst =
get_ptr_from_var_name(Ids::DecompressedDst.into(), vm, ids_data, ap_tracking)?;

let packed_felt = get_integer_from_var_name(Ids::PackedFelt.into(), vm, ids_data, ap_tracking)?;
let elm_bound = get_integer_from_var_name(Ids::ElmBound.into(), vm, ids_data, ap_tracking)?;

vm.insert_value(
decompressed_dst,
packed_felt.div_rem(&elm_bound.try_into().expect("elm_bound is zero")).1,
)?;

Ok(())
}
6 changes: 6 additions & 0 deletions crates/starknet_os/src/hints/vars.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -54,14 +54,17 @@ pub enum Ids {
ContractStateChanges,
DataEnd,
DataStart,
DecompressedDst,
DictPtr,
ElmBound,
FullOutput,
Hash,
NCompiledClassFacts,
NextAvailableAlias,
OldBlockHash,
OldBlockNumber,
OsStateUpdate,
PackedFelt,
PrevOffset,
Sha256Ptr,
StateEntry,
Expand All @@ -81,14 +84,17 @@ impl From<Ids> for &'static str {
Ids::ContractStateChanges => "contract_state_changes",
Ids::DataEnd => "data_end",
Ids::DataStart => "data_start",
Ids::DecompressedDst => "decompressed_dst",
Ids::DictPtr => "dict_ptr",
Ids::ElmBound => "elm_bound",
Ids::FullOutput => "full_output",
Ids::Hash => "hash",
Ids::NCompiledClassFacts => "n_compiled_class_facts",
Ids::NextAvailableAlias => "next_available_alias",
Ids::OldBlockHash => "old_block_hash",
Ids::OldBlockNumber => "old_block_number",
Ids::OsStateUpdate => "os_state_update",
Ids::PackedFelt => "packed_felt",
Ids::PrevOffset => "prev_offset",
Ids::Sha256Ptr => "sha256_ptr",
Ids::StateEntry => "state_entry",
Expand Down
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