clang-format

Add api() method to HookContext that lazily initializes a single
HookAPI instance, eliminating repeated instantiation overhead.
Simplify call sites to use hookCtx.api().xxx() directly.

Builds/CMake/RippledCore.cmake

@@ -488,6 +488,7 @@ target_sources (rippled PRIVATE
   src/ripple/app/tx/impl/apply.cpp
   src/ripple/app/tx/impl/applySteps.cpp
   src/ripple/app/hook/impl/applyHook.cpp
+  src/ripple/app/hook/impl/HookAPI.cpp
   src/ripple/app/tx/impl/details/NFTokenUtils.cpp
   #[===============================[
      main sources:
@@ -749,6 +750,7 @@ if (tests)
     src/test/app/Freeze_test.cpp
     src/test/app/GenesisMint_test.cpp
     src/test/app/HashRouter_test.cpp
+    src/test/app/HookAPI_test.cpp
     src/test/app/Import_test.cpp
     src/test/app/Invoke_test.cpp
     src/test/app/LedgerHistory_test.cpp

src/ripple/app/hook/HookAPI.h

@@ -0,0 +1,346 @@
+#ifndef HOOK_API_INCLUDED
+#define HOOK_API_INCLUDED 1
+
+#include <ripple/app/hook/Enum.h>
+#include <ripple/app/misc/Transaction.h>
+
+namespace hook {
+using namespace ripple;
+using HookReturnCode = hook_api::hook_return_code;
+
+using Bytes = std::vector<std::uint8_t>;
+
+struct HookContext;  // defined in applyHook.h
+
+class HookAPI
+{
+public:
+    explicit HookAPI(HookContext& ctx) : hookCtx(ctx)
+    {
+    }
+
+    /// control APIs
+    // _g
+    // accept
+    // rollback
+
+    /// util APIs
+    Expected<std::string, HookReturnCode>
+    util_raddr(Bytes const& accountID) const;
+
+    Expected<Bytes, HookReturnCode>
+    util_accid(std::string raddress) const;
+
+    Expected<bool, HookReturnCode>
+    util_verify(Slice const& data, Slice const& sig, Slice const& key) const;
+
+    uint256
+    util_sha512h(Slice const& data) const;
+
+    // util_keylet()
+
+    /// sto APIs
+    Expected<bool, HookReturnCode>
+    sto_validate(Bytes const& data) const;
+
+    Expected<std::pair<uint32_t, uint32_t>, HookReturnCode>
+    sto_subfield(Bytes const& data, uint32_t field_id) const;
+
+    Expected<std::pair<uint32_t, uint32_t>, HookReturnCode>
+    sto_subarray(Bytes const& data, uint32_t index_id) const;
+
+    Expected<Bytes, HookReturnCode>
+    sto_emplace(
+        Bytes const& source_object,
+        std::optional<Bytes> const& field_object,
+        uint32_t field_id) const;
+
+    // sto_erase(): same as sto_emplace with field_object = nullopt
+
+    /// etxn APIs
+    Expected<std::shared_ptr<Transaction>, HookReturnCode>
+    emit(Slice const& txBlob) const;
+
+    Expected<uint64_t, HookReturnCode>
+    etxn_burden() const;
+
+    Expected<uint64_t, HookReturnCode>
+    etxn_fee_base(Slice const& txBlob) const;
+
+    Expected<uint64_t, HookReturnCode>
+    etxn_details(uint8_t* out_ptr) const;
+
+    Expected<uint64_t, HookReturnCode>
+    etxn_reserve(uint64_t count) const;
+
+    uint32_t
+    etxn_generation() const;
+
+    Expected<uint256, HookReturnCode>
+    etxn_nonce() const;
+
+    /// float APIs
+    Expected<uint64_t, HookReturnCode>
+    float_set(int32_t exponent, int64_t mantissa) const;
+
+    Expected<uint64_t, HookReturnCode>
+    float_multiply(uint64_t float1, uint64_t float2) const;
+
+    Expected<uint64_t, HookReturnCode>
+    float_mulratio(
+        uint64_t float1,
+        uint32_t round_up,
+        uint32_t numerator,
+        uint32_t denominator) const;
+
+    uint64_t
+    float_negate(uint64_t float1) const;
+
+    Expected<uint64_t, HookReturnCode>
+    float_compare(uint64_t float1, uint64_t float2, uint32_t mode) const;
+
+    Expected<uint64_t, HookReturnCode>
+    float_sum(uint64_t float1, uint64_t float2) const;
+
+    Expected<Bytes, HookReturnCode>
+    float_sto(
+        std::optional<Currency> currency,
+        std::optional<AccountID> issuer,
+        uint64_t float1,
+        uint32_t field_code,
+        uint32_t write_len) const;
+
+    Expected<uint64_t, HookReturnCode>
+    float_sto_set(Bytes const& data) const;
+
+    Expected<uint64_t, HookReturnCode>
+    float_invert(uint64_t float1) const;
+
+    Expected<uint64_t, HookReturnCode>
+    float_divide(uint64_t float1, uint64_t float2) const;
+
+    uint64_t
+    float_one() const;
+
+    Expected<uint64_t, HookReturnCode>
+    float_mantissa(uint64_t float1) const;
+
+    uint64_t
+    float_sign(uint64_t float1) const;
+
+    Expected<uint64_t, HookReturnCode>
+    float_int(uint64_t float1, uint32_t decimal_places, uint32_t absolute)
+        const;
+
+    Expected<uint64_t, HookReturnCode>
+    float_log(uint64_t float1) const;
+
+    Expected<uint64_t, HookReturnCode>
+    float_root(uint64_t float1, uint32_t n) const;
+
+    /// otxn APIs
+    uint64_t
+    otxn_burden() const;
+
+    uint32_t
+    otxn_generation() const;
+
+    Expected<const STBase*, HookReturnCode>
+    otxn_field(uint32_t field_id) const;
+
+    Expected<uint256, HookReturnCode>
+    otxn_id(uint32_t flags) const;
+
+    TxType
+    otxn_type() const;
+
+    Expected<uint32_t, HookReturnCode>
+    otxn_slot(uint32_t slot_into) const;
+
+    Expected<Blob, HookReturnCode>
+    otxn_param(Bytes const& param_name) const;
+
+    /// hook APIs
+    AccountID
+    hook_account() const;
+
+    Expected<ripple::uint256, HookReturnCode>
+    hook_hash(int32_t hook_no) const;
+
+    Expected<int64_t, HookReturnCode>
+    hook_again() const;
+
+    Expected<Blob, HookReturnCode>
+    hook_param(Bytes const& paramName) const;
+
+    Expected<uint64_t, HookReturnCode>
+    hook_param_set(
+        uint256 const& hash,
+        Bytes const& paramName,
+        Bytes const& paramValue) const;
+
+    Expected<uint64_t, HookReturnCode>
+    hook_skip(uint256 const& hash, uint32_t flags) const;
+
+    uint8_t
+    hook_pos() const;
+
+    /// ledger APIs
+    uint64_t
+    fee_base() const;
+
+    uint32_t
+    ledger_seq() const;
+
+    uint256
+    ledger_last_hash() const;
+
+    uint64_t
+    ledger_last_time() const;
+
+    Expected<uint256, HookReturnCode>
+    ledger_nonce() const;
+
+    Expected<Keylet, HookReturnCode>
+    ledger_keylet(Keylet const& klLo, Keylet const& klHi) const;
+
+    /// state APIs
+
+    // state(): same as state_foreign with ns = 0 and account = hook_account()
+
+    Expected<Bytes, HookReturnCode>
+    state_foreign(
+        uint256 const& key,
+        uint256 const& ns,
+        AccountID const& account) const;
+
+    // state_set(): same as state_foreign_set with ns = 0 and account =
+
+    Expected<uint64_t, HookReturnCode>
+    state_foreign_set(
+        uint256 const& key,
+        uint256 const& ns,
+        AccountID const& account,
+        Bytes& data) const;
+
+    /// slot APIs
+    Expected<const STBase*, HookReturnCode>
+    slot(uint32_t slot_no) const;
+
+    Expected<uint64_t, HookReturnCode>
+    slot_clear(uint32_t slot_no) const;
+
+    Expected<uint64_t, HookReturnCode>
+    slot_count(uint32_t slot_no) const;
+
+    Expected<uint32_t, HookReturnCode>
+    slot_set(Bytes const& data, uint32_t slot_no) const;
+
+    Expected<uint64_t, HookReturnCode>
+    slot_size(uint32_t slot_no) const;
+
+    Expected<uint32_t, HookReturnCode>
+    slot_subarray(uint32_t parent_slot, uint32_t array_id, uint32_t new_slot)
+        const;
+
+    Expected<uint32_t, HookReturnCode>
+    slot_subfield(uint32_t parent_slot, uint32_t field_id, uint32_t new_slot)
+        const;
+
+    Expected<std::variant<STBase, STAmount>, HookReturnCode>
+    slot_type(uint32_t slot_no, uint32_t flags) const;
+
+    Expected<uint64_t, HookReturnCode>
+    slot_float(uint32_t slot_no) const;
+
+    /// trace APIs
+    // trace
+    // trace_num
+    // trace_float
+
+    Expected<uint32_t, HookReturnCode>
+    meta_slot(uint32_t slot_into) const;
+
+    Expected<std::pair<uint32_t, uint32_t>, HookReturnCode>
+    xpop_slot(uint32_t slot_into_tx, uint32_t slot_into_meta) const;
+
+private:
+    HookContext& hookCtx;
+
+    inline int32_t
+    no_free_slots() const;
+
+    inline std::optional<int32_t>
+    get_free_slot() const;
+
+    inline Expected<uint64_t, HookReturnCode>
+    float_multiply_internal_parts(
+        uint64_t man1,
+        int32_t exp1,
+        bool neg1,
+        uint64_t man2,
+        int32_t exp2,
+        bool neg2) const;
+
+    inline Expected<uint64_t, HookReturnCode>
+    mulratio_internal(
+        int64_t& man1,
+        int32_t& exp1,
+        bool round_up,
+        uint32_t numerator,
+        uint32_t denominator) const;
+
+    inline Expected<uint64_t, HookReturnCode>
+    float_divide_internal(uint64_t float1, uint64_t float2) const;
+
+    inline Expected<uint64_t, HookReturnCode>
+    double_to_xfl(double x) const;
+
+    std::optional<ripple::Keylet>
+    unserialize_keylet(Bytes const& data) const;
+
+    // update the state cache
+    inline std::optional<
+        std::reference_wrapper<std::pair<bool, ripple::Blob> const>>
+    lookup_state_cache(
+        AccountID const& acc,
+        uint256 const& ns,
+        uint256 const& key) const;
+
+    // check the state cache
+    inline Expected<uint64_t, HookReturnCode>
+    set_state_cache(
+        AccountID const& acc,
+        uint256 const& ns,
+        uint256 const& key,
+        Bytes const& data,
+        bool modified) const;
+
+    // these are only used by get_stobject_length below
+    enum parse_error {
+        pe_unexpected_end = -1,
+        pe_unknown_type_early = -2,  // detected early
+        pe_unknown_type_late = -3,   // end of function
+        pe_excessive_nesting = -4,
+        pe_excessive_size = -5
+    };
+
+    inline Expected<
+        int32_t,
+        parse_error>
+    get_stobject_length(
+        unsigned char* start,     // in - begin iterator
+        unsigned char* maxptr,    // in - end iterator
+        int& type,                // out - populated by serialized type code
+        int& field,               // out - populated by serialized field code
+        int& payload_start,       // out - the start of actual payload data for
+                                  // this type
+        int& payload_length,      // out - the length of actual payload data for
+                                  // this type
+        int recursion_depth = 0)  // used internally
+        const;
+};
+
+}  // namespace hook
+
+#endif  // HOOK_API_INCLUDED

src/ripple/app/hook/Macro.h

@@ -190,6 +190,7 @@
         [[maybe_unused]] const uint64_t memory_length =              \
             WasmEdge_MemoryInstanceGetPageSize(memoryCtx) *          \
             WasmEdge_kPageSize;                                      \
+        [[maybe_unused]] auto& api = hookCtx.api();                  \
         if (!memoryCtx || !memory || !memory_length)                 \
             return INTERNAL_ERROR;
 

src/ripple/app/hook/applyHook.h

@@ -1,6 +1,7 @@
 #ifndef APPLY_HOOK_INCLUDED
 #define APPLY_HOOK_INCLUDED 1
 #include <ripple/app/hook/Enum.h>
+#include <ripple/app/hook/HookAPI.h>
 #include <ripple/app/hook/Macro.h>
 #include <ripple/app/hook/Misc.h>
 #include <ripple/app/misc/Transaction.h>
@@ -477,7 +478,6 @@ struct HookResult
     ripple::uint256 const hookHash;
     ripple::uint256 const hookCanEmit;
     ripple::Keylet const accountKeylet;
-    ripple::Keylet const ownerDirKeylet;
     ripple::Keylet const hookKeylet;
     ripple::AccountID const account;
     ripple::AccountID const otxnAccount;
@@ -554,6 +554,18 @@ struct HookContext
                       // emitted txn then this optional becomes
                       // populated with the SLE
     const HookExecutor* module = 0;
+
+    // Lazy-initialized HookAPI member
+    mutable std::unique_ptr<HookAPI> api_;
+
+    // Access the HookAPI instance (lazy initialization)
+    HookAPI&
+    api() const
+    {
+        if (!api_)
+            api_ = std::make_unique<HookAPI>(const_cast<HookContext&>(*this));
+        return *api_;
+    }
 };
 
 bool
@@ -799,12 +811,13 @@ public:
         ADD_HOOK_FUNCTION(util_accid, ctx);
         ADD_HOOK_FUNCTION(util_verify, ctx);
         ADD_HOOK_FUNCTION(util_sha512h, ctx);
+        ADD_HOOK_FUNCTION(util_keylet, ctx);
+
         ADD_HOOK_FUNCTION(sto_validate, ctx);
         ADD_HOOK_FUNCTION(sto_subfield, ctx);
         ADD_HOOK_FUNCTION(sto_subarray, ctx);
         ADD_HOOK_FUNCTION(sto_emplace, ctx);
         ADD_HOOK_FUNCTION(sto_erase, ctx);
-        ADD_HOOK_FUNCTION(util_keylet, ctx);
 
         ADD_HOOK_FUNCTION(emit, ctx);
         ADD_HOOK_FUNCTION(etxn_burden, ctx);
@@ -843,6 +856,11 @@ public:
         ADD_HOOK_FUNCTION(hook_account, ctx);
         ADD_HOOK_FUNCTION(hook_hash, ctx);
         ADD_HOOK_FUNCTION(hook_again, ctx);
+        ADD_HOOK_FUNCTION(hook_param, ctx);
+        ADD_HOOK_FUNCTION(hook_param_set, ctx);
+        ADD_HOOK_FUNCTION(hook_skip, ctx);
+        ADD_HOOK_FUNCTION(hook_pos, ctx);
+
         ADD_HOOK_FUNCTION(fee_base, ctx);
         ADD_HOOK_FUNCTION(ledger_seq, ctx);
         ADD_HOOK_FUNCTION(ledger_last_hash, ctx);
@@ -850,11 +868,6 @@ public:
         ADD_HOOK_FUNCTION(ledger_nonce, ctx);
         ADD_HOOK_FUNCTION(ledger_keylet, ctx);
 
-        ADD_HOOK_FUNCTION(hook_param, ctx);
-        ADD_HOOK_FUNCTION(hook_param_set, ctx);
-        ADD_HOOK_FUNCTION(hook_skip, ctx);
-        ADD_HOOK_FUNCTION(hook_pos, ctx);
-
         ADD_HOOK_FUNCTION(state, ctx);
         ADD_HOOK_FUNCTION(state_foreign, ctx);
         ADD_HOOK_FUNCTION(state_set, ctx);

src/ripple/basics/Expected.h

@@ -137,14 +137,14 @@ class [[nodiscard]] Expected
 public:
     template <typename U>
     requires std::convertible_to<U, T> constexpr Expected(U && r)
-        : Base(T(std::forward<U>(r)))
+        : Base(boost::outcome_v2::success(T(std::forward<U>(r))))
     {
     }
 
     template <typename U>
         requires std::convertible_to<U, E> &&
         (!std::is_reference_v<U>)constexpr Expected(Unexpected<U> e)
-        : Base(E(std::move(e.value())))
+        : Base(boost::outcome_v2::failure(E(std::move(e.value()))))
     {
     }
 
@@ -220,7 +220,7 @@ public:
     template <typename U>
         requires std::convertible_to<U, E> &&
         (!std::is_reference_v<U>)constexpr Expected(Unexpected<U> e)
-        : Base(E(std::move(e.value())))
+        : Base(boost::outcome_v2::failure(E(std::move(e.value()))))
     {
     }
 

src/test/app/SetHook_test.cpp

@@ -2579,6 +2579,7 @@ public:
 
         auto const alice = Account{"alice"};
         auto const bob = Account{"bob"};
+
         env.fund(XRP(10000), alice);
         env.fund(XRP(10000), bob);
 
@@ -3094,6 +3095,7 @@ public:
             extern int64_t rollback (uint32_t read_ptr, uint32_t read_len, int64_t error_code);
             extern int64_t etxn_details (uint32_t, uint32_t);
             extern int64_t etxn_reserve(uint32_t);
+            extern int64_t hook_hash (uint32_t, uint32_t, int32_t);
             #define TOO_SMALL -4
             #define OUT_OF_BOUNDS -1
             #define PREREQUISITE_NOT_MET -9
@@ -3116,6 +3118,45 @@ public:
                 etxn_reserve(1);
                 ASSERT(etxn_details((uint32_t)det, 116) == 116);
 
+                uint8_t expected1[49] = {
+                    0xEDU, 0x20U, 0x2EU, 0x00U, 0x00U, 0x00U, 0x01U, 0x3DU, 0x00U, 0x00U,
+                    0x00U, 0x00U, 0x00U, 0x00U, 0x00U, 0x01U, 0x5BU, 0xB8U, 0x05U, 0xD6U,
+                    0xC3U, 0x52U, 0xDFU, 0x7AU, 0x27U, 0x76U, 0x6DU, 0xC0U, 0x20U, 0x47U,
+                    0xB7U, 0x64U, 0x22U, 0x5AU, 0xB7U, 0x5DU, 0xF3U, 0xFAU, 0x0DU, 0xE3U,
+                    0xBDU, 0xC6U, 0x40U, 0xBAU, 0xD0U, 0x0AU, 0x66U, 0xEBU, 0x68U,
+                };
+                // 0x5CU
+                // EmitNonce 32bytes
+                uint8_t expected_emit_nonce[32] = {
+                    0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU,
+                    0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU,
+                    0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU,
+                    0xFFU, 0xFFU
+                };
+                // 0x5DU, 
+                // EmitHookHash
+                uint8_t expected_hook_hash[32] = {
+                    0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU,
+                    0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU,
+                    0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU,
+                    0xFFU, 0xFFU,
+                };
+                // 0xE1U
+                
+                // current hook hash
+                ASSERT(hook_hash((uint32_t)expected_hook_hash, 32, -1) == 32);
+
+                for (int i = 0; GUARD(49), i < sizeof(expected1); ++i)
+                    ASSERT(det[i] == expected1[i]);
+                ASSERT(det[49] == 0x5CU);
+                // TODO: need to test this
+                // for (int i = 0; GUARD(32), i < sizeof(expected_emit_nonce); ++i)
+                //     ASSERT(det[50 + i] == expected_emit_nonce[i]);
+                ASSERT(det[82] == 0x5DU);
+                for (int i = 0; GUARD(32), i < sizeof(expected_hook_hash); ++i)
+                    ASSERT(det[83 + i] == expected_hook_hash[i]);
+                ASSERT(det[115] == 0xE1);
+
                 return accept(0,0,0);
             }
         )[test.hook]"];
@@ -3280,6 +3321,7 @@ public:
                 }
 
                 ASSERT(etxn_nonce((uint32_t)nonce, 116) == TOO_MANY_NONCES);
+                ASSERT(etxn_nonce((uint32_t)nonce, 31) == TOO_MANY_NONCES);
 
                 return accept(0,0,0);
             }

src/test/app/SetHook_wasm.h

@@ -1168,6 +1168,7 @@ std::map<std::string, std::vector<uint8_t>> wasm = {
             extern int64_t rollback (uint32_t read_ptr, uint32_t read_len, int64_t error_code);
             extern int64_t etxn_details (uint32_t, uint32_t);
             extern int64_t etxn_reserve(uint32_t);
+            extern int64_t hook_hash (uint32_t, uint32_t, int32_t);
             #define TOO_SMALL -4
             #define OUT_OF_BOUNDS -1
             #define PREREQUISITE_NOT_MET -9
@@ -1190,78 +1191,178 @@ std::map<std::string, std::vector<uint8_t>> wasm = {
                 etxn_reserve(1);
                 ASSERT(etxn_details((uint32_t)det, 116) == 116);
 
+                uint8_t expected1[49] = {
+                    0xEDU, 0x20U, 0x2EU, 0x00U, 0x00U, 0x00U, 0x01U, 0x3DU, 0x00U, 0x00U,
+                    0x00U, 0x00U, 0x00U, 0x00U, 0x00U, 0x01U, 0x5BU, 0xB8U, 0x05U, 0xD6U,
+                    0xC3U, 0x52U, 0xDFU, 0x7AU, 0x27U, 0x76U, 0x6DU, 0xC0U, 0x20U, 0x47U,
+                    0xB7U, 0x64U, 0x22U, 0x5AU, 0xB7U, 0x5DU, 0xF3U, 0xFAU, 0x0DU, 0xE3U,
+                    0xBDU, 0xC6U, 0x40U, 0xBAU, 0xD0U, 0x0AU, 0x66U, 0xEBU, 0x68U,
+                };
+                // 0x5CU
+                // EmitNonce 32bytes
+                uint8_t expected_emit_nonce[32] = {
+                    0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU,
+                    0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU,
+                    0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU,
+                    0xFFU, 0xFFU
+                };
+                // 0x5DU, 
+                // EmitHookHash
+                uint8_t expected_hook_hash[32] = {
+                    0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU,
+                    0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU,
+                    0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU,
+                    0xFFU, 0xFFU,
+                };
+                // 0xE1U
+                
+                // current hook hash
+                ASSERT(hook_hash((uint32_t)expected_hook_hash, 32, -1) == 32);
+
+                for (int i = 0; GUARD(49), i < sizeof(expected1); ++i)
+                    ASSERT(det[i] == expected1[i]);
+                ASSERT(det[49] == 0x5CU);
+                // TODO: need to test this
+                // for (int i = 0; GUARD(32), i < sizeof(expected_emit_nonce); ++i)
+                //     ASSERT(det[50 + i] == expected_emit_nonce[i]);
+                ASSERT(det[82] == 0x5DU);
+                for (int i = 0; GUARD(32), i < sizeof(expected_hook_hash); ++i)
+                    ASSERT(det[83 + i] == expected_hook_hash[i]);
+                ASSERT(det[115] == 0xE1);
+
                 return accept(0,0,0);
             }
         )[test.hook]",
      {
-         0x00U, 0x61U, 0x73U, 0x6DU, 0x01U, 0x00U, 0x00U, 0x00U, 0x01U, 0x19U,
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+         0x3DU, 0x3DU, 0x20U, 0x4FU, 0x55U, 0x54U, 0x5FU, 0x4FU, 0x46U, 0x5FU,
+         0x42U, 0x4FU, 0x55U, 0x4EU, 0x44U, 0x53U, 0x00U, 0x65U, 0x74U, 0x78U,
+         0x6EU, 0x5FU, 0x64U, 0x65U, 0x74U, 0x61U, 0x69U, 0x6CU, 0x73U, 0x28U,
+         0x30U, 0x2CU, 0x20U, 0x31U, 0x30U, 0x30U, 0x30U, 0x30U, 0x30U, 0x30U,
+         0x29U, 0x20U, 0x3DU, 0x3DU, 0x20U, 0x4FU, 0x55U, 0x54U, 0x5FU, 0x4FU,
+         0x46U, 0x5FU, 0x42U, 0x4FU, 0x55U, 0x4EU, 0x44U, 0x53U, 0x00U, 0x65U,
+         0x74U, 0x78U, 0x6EU, 0x5FU, 0x64U, 0x65U, 0x74U, 0x61U, 0x69U, 0x6CU,
+         0x73U, 0x28U, 0x28U, 0x75U, 0x69U, 0x6EU, 0x74U, 0x33U, 0x32U, 0x5FU,
+         0x74U, 0x29U, 0x64U, 0x65U, 0x74U, 0x2CU, 0x20U, 0x31U, 0x31U, 0x35U,
+         0x29U, 0x20U, 0x3DU, 0x3DU, 0x20U, 0x54U, 0x4FU, 0x4FU, 0x5FU, 0x53U,
+         0x4DU, 0x41U, 0x4CU, 0x4CU, 0x00U, 0x65U, 0x74U, 0x78U, 0x6EU, 0x5FU,
+         0x64U, 0x65U, 0x74U, 0x61U, 0x69U, 0x6CU, 0x73U, 0x28U, 0x28U, 0x75U,
+         0x69U, 0x6EU, 0x74U, 0x33U, 0x32U, 0x5FU, 0x74U, 0x29U, 0x64U, 0x65U,
+         0x74U, 0x2CU, 0x20U, 0x31U, 0x31U, 0x36U, 0x29U, 0x20U, 0x3DU, 0x3DU,
+         0x20U, 0x50U, 0x52U, 0x45U, 0x52U, 0x45U, 0x51U, 0x55U, 0x49U, 0x53U,
+         0x49U, 0x54U, 0x45U, 0x5FU, 0x4EU, 0x4FU, 0x54U, 0x5FU, 0x4DU, 0x45U,
+         0x54U, 0x00U, 0x65U, 0x74U, 0x78U, 0x6EU, 0x5FU, 0x64U, 0x65U, 0x74U,
+         0x61U, 0x69U, 0x6CU, 0x73U, 0x28U, 0x28U, 0x75U, 0x69U, 0x6EU, 0x74U,
+         0x33U, 0x32U, 0x5FU, 0x74U, 0x29U, 0x64U, 0x65U, 0x74U, 0x2CU, 0x20U,
+         0x31U, 0x31U, 0x36U, 0x29U, 0x20U, 0x3DU, 0x3DU, 0x20U, 0x31U, 0x31U,
+         0x36U, 0x00U, 0x00U, 0x00U, 0x00U, 0x00U, 0x00U, 0x00U, 0x00U, 0x00U,
+         0x00U, 0x00U, 0x00U, 0xEDU, 0x20U, 0x2EU, 0x00U, 0x00U, 0x00U, 0x01U,
+         0x3DU, 0x00U, 0x00U, 0x00U, 0x00U, 0x00U, 0x00U, 0x00U, 0x01U, 0x5BU,
+         0xB8U, 0x05U, 0xD6U, 0xC3U, 0x52U, 0xDFU, 0x7AU, 0x27U, 0x76U, 0x6DU,
+         0xC0U, 0x20U, 0x47U, 0xB7U, 0x64U, 0x22U, 0x5AU, 0xB7U, 0x5DU, 0xF3U,
+         0xFAU, 0x0DU, 0xE3U, 0xBDU, 0xC6U, 0x40U, 0xBAU, 0xD0U, 0x0AU, 0x66U,
+         0xEBU, 0x68U, 0x68U, 0x6FU, 0x6FU, 0x6BU, 0x5FU, 0x68U, 0x61U, 0x73U,
+         0x68U, 0x28U, 0x28U, 0x75U, 0x69U, 0x6EU, 0x74U, 0x33U, 0x32U, 0x5FU,
+         0x74U, 0x29U, 0x65U, 0x78U, 0x70U, 0x65U, 0x63U, 0x74U, 0x65U, 0x64U,
+         0x5FU, 0x68U, 0x6FU, 0x6FU, 0x6BU, 0x5FU, 0x68U, 0x61U, 0x73U, 0x68U,
+         0x2CU, 0x20U, 0x33U, 0x32U, 0x2CU, 0x20U, 0x2DU, 0x31U, 0x29U, 0x20U,
+         0x3DU, 0x3DU, 0x20U, 0x33U, 0x32U, 0x00U, 0x64U, 0x65U, 0x74U, 0x5BU,
+         0x69U, 0x5DU, 0x20U, 0x3DU, 0x3DU, 0x20U, 0x65U, 0x78U, 0x70U, 0x65U,
+         0x63U, 0x74U, 0x65U, 0x64U, 0x31U, 0x5BU, 0x69U, 0x5DU, 0x00U, 0x64U,
+         0x65U, 0x74U, 0x5BU, 0x34U, 0x39U, 0x5DU, 0x20U, 0x3DU, 0x3DU, 0x20U,
+         0x30U, 0x78U, 0x35U, 0x43U, 0x55U, 0x00U, 0x64U, 0x65U, 0x74U, 0x5BU,
+         0x38U, 0x32U, 0x5DU, 0x20U, 0x3DU, 0x3DU, 0x20U, 0x30U, 0x78U, 0x35U,
+         0x44U, 0x55U, 0x00U, 0x64U, 0x65U, 0x74U, 0x5BU, 0x38U, 0x33U, 0x20U,
+         0x2BU, 0x20U, 0x69U, 0x5DU, 0x20U, 0x3DU, 0x3DU, 0x20U, 0x65U, 0x78U,
+         0x70U, 0x65U, 0x63U, 0x74U, 0x65U, 0x64U, 0x5FU, 0x68U, 0x6FU, 0x6FU,
+         0x6BU, 0x5FU, 0x68U, 0x61U, 0x73U, 0x68U, 0x5BU, 0x69U, 0x5DU, 0x00U,
+         0x64U, 0x65U, 0x74U, 0x5BU, 0x31U, 0x31U, 0x35U, 0x5DU, 0x20U, 0x3DU,
+         0x3DU, 0x20U, 0x30U, 0x78U, 0x45U, 0x31U, 0x00U,
      }},
 
     /* ==== WASM: 8 ==== */
@@ -1422,6 +1523,7 @@ std::map<std::string, std::vector<uint8_t>> wasm = {
                 }
 
                 ASSERT(etxn_nonce((uint32_t)nonce, 116) == TOO_MANY_NONCES);
+                ASSERT(etxn_nonce((uint32_t)nonce, 31) == TOO_MANY_NONCES);
 
                 return accept(0,0,0);
             }
@@ -1437,12 +1539,12 @@ std::map<std::string, std::vector<uint8_t>> wasm = {
          0x6FU, 0x6CU, 0x6CU, 0x62U, 0x61U, 0x63U, 0x6BU, 0x00U, 0x02U, 0x03U,
          0x65U, 0x6EU, 0x76U, 0x06U, 0x61U, 0x63U, 0x63U, 0x65U, 0x70U, 0x74U,
          0x00U, 0x02U, 0x03U, 0x02U, 0x01U, 0x03U, 0x05U, 0x03U, 0x01U, 0x00U,
-         0x02U, 0x06U, 0x21U, 0x05U, 0x7FU, 0x01U, 0x41U, 0xA0U, 0x8AU, 0x04U,
+         0x02U, 0x06U, 0x21U, 0x05U, 0x7FU, 0x01U, 0x41U, 0xE0U, 0x8AU, 0x04U,
-         0x0BU, 0x7FU, 0x00U, 0x41U, 0x9EU, 0x0AU, 0x0BU, 0x7FU, 0x00U, 0x41U,
+         0x0BU, 0x7FU, 0x00U, 0x41U, 0xD1U, 0x0AU, 0x0BU, 0x7FU, 0x00U, 0x41U,
-         0x80U, 0x08U, 0x0BU, 0x7FU, 0x00U, 0x41U, 0xA0U, 0x8AU, 0x04U, 0x0BU,
+         0x80U, 0x08U, 0x0BU, 0x7FU, 0x00U, 0x41U, 0xE0U, 0x8AU, 0x04U, 0x0BU,
          0x7FU, 0x00U, 0x41U, 0x80U, 0x08U, 0x0BU, 0x07U, 0x08U, 0x01U, 0x04U,
-         0x68U, 0x6FU, 0x6FU, 0x6BU, 0x00U, 0x04U, 0x0AU, 0xE1U, 0x82U, 0x00U,
+         0x68U, 0x6FU, 0x6FU, 0x6BU, 0x00U, 0x04U, 0x0AU, 0x84U, 0x83U, 0x00U,
-         0x01U, 0xDDU, 0x82U, 0x00U, 0x02U, 0x02U, 0x7FU, 0x01U, 0x7EU, 0x23U,
+         0x01U, 0x80U, 0x83U, 0x00U, 0x02U, 0x02U, 0x7FU, 0x01U, 0x7EU, 0x23U,
          0x80U, 0x80U, 0x80U, 0x80U, 0x00U, 0x41U, 0xC0U, 0x00U, 0x6BU, 0x22U,
          0x01U, 0x24U, 0x80U, 0x80U, 0x80U, 0x80U, 0x00U, 0x41U, 0x01U, 0x41U,
          0x01U, 0x10U, 0x80U, 0x80U, 0x80U, 0x80U, 0x00U, 0x1AU, 0x02U, 0x40U,
@@ -1474,39 +1576,48 @@ std::map<std::string, std::vector<uint8_t>> wasm = {
          0x20U, 0x01U, 0x41U, 0xF4U, 0x00U, 0x10U, 0x81U, 0x80U, 0x80U, 0x80U,
          0x00U, 0x42U, 0x74U, 0x51U, 0x0DU, 0x00U, 0x41U, 0xEAU, 0x89U, 0x80U,
          0x80U, 0x00U, 0x41U, 0x34U, 0x42U, 0x23U, 0x10U, 0x82U, 0x80U, 0x80U,
-         0x80U, 0x00U, 0x1AU, 0x0BU, 0x41U, 0x00U, 0x41U, 0x00U, 0x42U, 0x00U,
+         0x80U, 0x00U, 0x1AU, 0x0BU, 0x02U, 0x40U, 0x20U, 0x01U, 0x41U, 0x1FU,
-         0x10U, 0x83U, 0x80U, 0x80U, 0x80U, 0x00U, 0x21U, 0x03U, 0x20U, 0x01U,
+         0x10U, 0x81U, 0x80U, 0x80U, 0x80U, 0x00U, 0x42U, 0x74U, 0x51U, 0x0DU,
-         0x41U, 0xC0U, 0x00U, 0x6AU, 0x24U, 0x80U, 0x80U, 0x80U, 0x80U, 0x00U,
+         0x00U, 0x41U, 0x9EU, 0x8AU, 0x80U, 0x80U, 0x00U, 0x41U, 0x33U, 0x42U,
-         0x20U, 0x03U, 0x0BU, 0x0BU, 0xA6U, 0x02U, 0x01U, 0x00U, 0x41U, 0x80U,
+         0x24U, 0x10U, 0x82U, 0x80U, 0x80U, 0x80U, 0x00U, 0x1AU, 0x0BU, 0x41U,
-         0x08U, 0x0BU, 0x9EU, 0x02U, 0x65U, 0x74U, 0x78U, 0x6EU, 0x5FU, 0x6EU,
+         0x00U, 0x41U, 0x00U, 0x42U, 0x00U, 0x10U, 0x83U, 0x80U, 0x80U, 0x80U,
-         0x6FU, 0x6EU, 0x63U, 0x65U, 0x28U, 0x31U, 0x30U, 0x30U, 0x30U, 0x30U,
+         0x00U, 0x21U, 0x03U, 0x20U, 0x01U, 0x41U, 0xC0U, 0x00U, 0x6AU, 0x24U,
-         0x30U, 0x30U, 0x2CU, 0x20U, 0x31U, 0x31U, 0x36U, 0x29U, 0x20U, 0x3DU,
+         0x80U, 0x80U, 0x80U, 0x80U, 0x00U, 0x20U, 0x03U, 0x0BU, 0x0BU, 0xD9U,
-         0x3DU, 0x20U, 0x4FU, 0x55U, 0x54U, 0x5FU, 0x4FU, 0x46U, 0x5FU, 0x42U,
+         0x02U, 0x01U, 0x00U, 0x41U, 0x80U, 0x08U, 0x0BU, 0xD1U, 0x02U, 0x65U,
-         0x4FU, 0x55U, 0x4EU, 0x44U, 0x53U, 0x00U, 0x65U, 0x74U, 0x78U, 0x6EU,
+         0x74U, 0x78U, 0x6EU, 0x5FU, 0x6EU, 0x6FU, 0x6EU, 0x63U, 0x65U, 0x28U,
-         0x5FU, 0x6EU, 0x6FU, 0x6EU, 0x63U, 0x65U, 0x28U, 0x30U, 0x2CU, 0x20U,
+         0x31U, 0x30U, 0x30U, 0x30U, 0x30U, 0x30U, 0x30U, 0x2CU, 0x20U, 0x31U,
-         0x31U, 0x30U, 0x30U, 0x30U, 0x30U, 0x30U, 0x30U, 0x29U, 0x20U, 0x3DU,
+         0x31U, 0x36U, 0x29U, 0x20U, 0x3DU, 0x3DU, 0x20U, 0x4FU, 0x55U, 0x54U,
-         0x3DU, 0x20U, 0x4FU, 0x55U, 0x54U, 0x5FU, 0x4FU, 0x46U, 0x5FU, 0x42U,
+         0x5FU, 0x4FU, 0x46U, 0x5FU, 0x42U, 0x4FU, 0x55U, 0x4EU, 0x44U, 0x53U,
-         0x4FU, 0x55U, 0x4EU, 0x44U, 0x53U, 0x00U, 0x65U, 0x74U, 0x78U, 0x6EU,
+         0x00U, 0x65U, 0x74U, 0x78U, 0x6EU, 0x5FU, 0x6EU, 0x6FU, 0x6EU, 0x63U,
-         0x5FU, 0x6EU, 0x6FU, 0x6EU, 0x63U, 0x65U, 0x28U, 0x28U, 0x75U, 0x69U,
+         0x65U, 0x28U, 0x30U, 0x2CU, 0x20U, 0x31U, 0x30U, 0x30U, 0x30U, 0x30U,
-         0x6EU, 0x74U, 0x33U, 0x32U, 0x5FU, 0x74U, 0x29U, 0x6EU, 0x6FU, 0x6EU,
+         0x30U, 0x30U, 0x29U, 0x20U, 0x3DU, 0x3DU, 0x20U, 0x4FU, 0x55U, 0x54U,
-         0x63U, 0x65U, 0x2CU, 0x20U, 0x33U, 0x31U, 0x29U, 0x20U, 0x3DU, 0x3DU,
+         0x5FU, 0x4FU, 0x46U, 0x5FU, 0x42U, 0x4FU, 0x55U, 0x4EU, 0x44U, 0x53U,
-         0x20U, 0x54U, 0x4FU, 0x4FU, 0x5FU, 0x53U, 0x4DU, 0x41U, 0x4CU, 0x4CU,
          0x00U, 0x65U, 0x74U, 0x78U, 0x6EU, 0x5FU, 0x6EU, 0x6FU, 0x6EU, 0x63U,
          0x65U, 0x28U, 0x28U, 0x75U, 0x69U, 0x6EU, 0x74U, 0x33U, 0x32U, 0x5FU,
-         0x74U, 0x29U, 0x6EU, 0x6FU, 0x6EU, 0x63U, 0x65U, 0x20U, 0x2BU, 0x20U,
+         0x74U, 0x29U, 0x6EU, 0x6FU, 0x6EU, 0x63U, 0x65U, 0x2CU, 0x20U, 0x33U,
-         0x28U, 0x28U, 0x69U, 0x20U, 0x25U, 0x20U, 0x32U, 0x29U, 0x20U, 0x2AU,
+         0x31U, 0x29U, 0x20U, 0x3DU, 0x3DU, 0x20U, 0x54U, 0x4FU, 0x4FU, 0x5FU,
-         0x20U, 0x33U, 0x32U, 0x29U, 0x2CU, 0x20U, 0x33U, 0x32U, 0x29U, 0x20U,
+         0x53U, 0x4DU, 0x41U, 0x4CU, 0x4CU, 0x00U, 0x65U, 0x74U, 0x78U, 0x6EU,
-         0x3DU, 0x3DU, 0x20U, 0x33U, 0x32U, 0x00U, 0x21U, 0x28U, 0x2AU, 0x28U,
+         0x5FU, 0x6EU, 0x6FU, 0x6EU, 0x63U, 0x65U, 0x28U, 0x28U, 0x75U, 0x69U,
-         0x6EU, 0x31U, 0x20U, 0x2BU, 0x20U, 0x30U, 0x29U, 0x20U, 0x3DU, 0x3DU,
+         0x6EU, 0x74U, 0x33U, 0x32U, 0x5FU, 0x74U, 0x29U, 0x6EU, 0x6FU, 0x6EU,
-         0x20U, 0x2AU, 0x28U, 0x6EU, 0x32U, 0x20U, 0x2BU, 0x20U, 0x30U, 0x29U,
+         0x63U, 0x65U, 0x20U, 0x2BU, 0x20U, 0x28U, 0x28U, 0x69U, 0x20U, 0x25U,
-         0x20U, 0x26U, 0x26U, 0x20U, 0x2AU, 0x28U, 0x6EU, 0x31U, 0x20U, 0x2BU,
+         0x20U, 0x32U, 0x29U, 0x20U, 0x2AU, 0x20U, 0x33U, 0x32U, 0x29U, 0x2CU,
-         0x20U, 0x31U, 0x29U, 0x20U, 0x3DU, 0x3DU, 0x20U, 0x2AU, 0x28U, 0x6EU,
+         0x20U, 0x33U, 0x32U, 0x29U, 0x20U, 0x3DU, 0x3DU, 0x20U, 0x33U, 0x32U,
-         0x32U, 0x20U, 0x2BU, 0x20U, 0x31U, 0x29U, 0x29U, 0x00U, 0x65U, 0x74U,
+         0x00U, 0x21U, 0x28U, 0x2AU, 0x28U, 0x6EU, 0x31U, 0x20U, 0x2BU, 0x20U,
-         0x78U, 0x6EU, 0x5FU, 0x6EU, 0x6FU, 0x6EU, 0x63U, 0x65U, 0x28U, 0x28U,
+         0x30U, 0x29U, 0x20U, 0x3DU, 0x3DU, 0x20U, 0x2AU, 0x28U, 0x6EU, 0x32U,
-         0x75U, 0x69U, 0x6EU, 0x74U, 0x33U, 0x32U, 0x5FU, 0x74U, 0x29U, 0x6EU,
+         0x20U, 0x2BU, 0x20U, 0x30U, 0x29U, 0x20U, 0x26U, 0x26U, 0x20U, 0x2AU,
-         0x6FU, 0x6EU, 0x63U, 0x65U, 0x2CU, 0x20U, 0x31U, 0x31U, 0x36U, 0x29U,
+         0x28U, 0x6EU, 0x31U, 0x20U, 0x2BU, 0x20U, 0x31U, 0x29U, 0x20U, 0x3DU,
-         0x20U, 0x3DU, 0x3DU, 0x20U, 0x54U, 0x4FU, 0x4FU, 0x5FU, 0x4DU, 0x41U,
+         0x3DU, 0x20U, 0x2AU, 0x28U, 0x6EU, 0x32U, 0x20U, 0x2BU, 0x20U, 0x31U,
-         0x4EU, 0x59U, 0x5FU, 0x4EU, 0x4FU, 0x4EU, 0x43U, 0x45U, 0x53U, 0x00U,
+         0x29U, 0x29U, 0x00U, 0x65U, 0x74U, 0x78U, 0x6EU, 0x5FU, 0x6EU, 0x6FU,
+         0x6EU, 0x63U, 0x65U, 0x28U, 0x28U, 0x75U, 0x69U, 0x6EU, 0x74U, 0x33U,
+         0x32U, 0x5FU, 0x74U, 0x29U, 0x6EU, 0x6FU, 0x6EU, 0x63U, 0x65U, 0x2CU,
+         0x20U, 0x31U, 0x31U, 0x36U, 0x29U, 0x20U, 0x3DU, 0x3DU, 0x20U, 0x54U,
+         0x4FU, 0x4FU, 0x5FU, 0x4DU, 0x41U, 0x4EU, 0x59U, 0x5FU, 0x4EU, 0x4FU,
+         0x4EU, 0x43U, 0x45U, 0x53U, 0x00U, 0x65U, 0x74U, 0x78U, 0x6EU, 0x5FU,
+         0x6EU, 0x6FU, 0x6EU, 0x63U, 0x65U, 0x28U, 0x28U, 0x75U, 0x69U, 0x6EU,
+         0x74U, 0x33U, 0x32U, 0x5FU, 0x74U, 0x29U, 0x6EU, 0x6FU, 0x6EU, 0x63U,
+         0x65U, 0x2CU, 0x20U, 0x33U, 0x31U, 0x29U, 0x20U, 0x3DU, 0x3DU, 0x20U,
+         0x54U, 0x4FU, 0x4FU, 0x5FU, 0x4DU, 0x41U, 0x4EU, 0x59U, 0x5FU, 0x4EU,
+         0x4FU, 0x4EU, 0x43U, 0x45U, 0x53U, 0x00U,
      }},
 
     /* ==== WASM: 10 ==== */

src/test/jtx/hook.h

@@ -20,9 +20,13 @@
 #ifndef RIPPLE_TEST_JTX_HOOK_H_INCLUDED
 #define RIPPLE_TEST_JTX_HOOK_H_INCLUDED
 
+#include <ripple/app/hook/applyHook.h>
 #include <ripple/json/json_value.h>
+#include <cstdint>
+#include <map>
 #include <optional>
 #include <test/jtx/Account.h>
+#include <vector>
 
 namespace ripple {
 namespace test {
@@ -43,6 +47,75 @@ hso(std::string const& wasmHex, void (*f)(Json::Value& jv) = 0);
 Json::Value
 hso_delete(void (*f)(Json::Value& jv) = 0);
 
+struct StubHookResult
+{
+    ripple::uint256 const hookSetTxnID = ripple::uint256();
+    ripple::uint256 const hookHash = ripple::uint256();
+    ripple::uint256 const hookCanEmit = ripple::uint256();
+    ripple::uint256 const hookNamespace = ripple::uint256();
+
+    std::queue<std::shared_ptr<ripple::Transaction>> emittedTxn{};
+    std::optional<hook::HookStateMap> stateMap = std::nullopt;
+    uint16_t changedStateCount = 0;
+    std::map<
+        ripple::uint256,  // hook hash
+        std::map<
+            std::vector<uint8_t>,  // hook param name
+            std::vector<uint8_t>   // hook param value
+            >>
+        hookParamOverrides = {};
+
+    std::optional<std::map<std::vector<uint8_t>, std::vector<uint8_t>>>
+        hookParams = std::nullopt;
+    std::set<ripple::uint256> hookSkips = {};
+    hook_api::ExitType exitType = hook_api::ExitType::ROLLBACK;
+    std::string exitReason{""};
+    int64_t exitCode{-1};
+    uint64_t instructionCount{0};
+    bool hasCallback = false;
+    bool isCallback = false;
+    bool isStrong = false;
+    uint32_t wasmParam = 0;
+    uint32_t overrideCount = 0;
+    uint8_t hookChainPosition = 0;
+    bool foreignStateSetDisabled = false;
+    bool executeAgainAsWeak = false;
+    std::shared_ptr<STObject const> provisionalMeta = nullptr;
+};
+
+struct StubHookContext
+{
+    std::map<uint32_t, hook::SlotEntry> slot{};
+    std::queue<uint32_t> slot_free{};
+    uint32_t slot_counter{0};
+    uint16_t emit_nonce_counter{0};
+    uint16_t ledger_nonce_counter{0};
+    int64_t expected_etxn_count{-1};
+    std::map<ripple::uint256, bool> nonce_used{};
+    uint32_t generation = 0;
+    uint64_t burden = 0;
+    std::map<uint32_t, uint32_t> guard_map{};
+    StubHookResult result = {};
+    std::optional<ripple::STObject> emitFailure = std::nullopt;
+    const hook::HookExecutor* module = 0;
+};
+
+// Overload that takes external stateMap to avoid dangling reference
+hook::HookContext
+makeStubHookContext(
+    ripple::ApplyContext& applyCtx,
+    ripple::AccountID const& hookAccount,
+    ripple::AccountID const& otxnAccount,
+    StubHookContext const& stubHookContext,
+    hook::HookStateMap& stateMap);
+
+hook::HookContext
+makeStubHookContext(
+    ripple::ApplyContext& applyCtx,
+    ripple::AccountID const& hookAccount,
+    ripple::AccountID const& otxnAccount,
+    StubHookContext const& stubHookContext);
+
 }  // namespace jtx
 }  // namespace test
 }  // namespace ripple

src/test/jtx/impl/hook.cpp

@@ -18,7 +18,9 @@
 //==============================================================================
 
 #include <ripple/app/hook/Enum.h>
+#include <ripple/app/hook/applyHook.h>
 #include <ripple/basics/contract.h>
+#include <ripple/protocol/Keylet.h>
 #include <ripple/protocol/jss.h>
 #include <stdexcept>
 #include <test/jtx/hook.h>
@@ -102,6 +104,81 @@ hso(std::string const& wasmHex, void (*f)(Json::Value& jv))
     return jv;
 }
 
+// Helper function to create HookContext with external stateMap
+hook::HookContext
+makeStubHookContext(
+    ripple::ApplyContext& applyCtx,
+    ripple::AccountID const& hookAccount,
+    ripple::AccountID const& otxnAccount,
+    StubHookContext const& stubHookContext,
+    hook::HookStateMap& stateMap)
+{
+    auto& result = stubHookContext.result;
+    auto hookParams = result.hookParams.value_or(
+        std::map<std::vector<uint8_t>, std::vector<uint8_t>>{});
+    return hook::HookContext{
+        .applyCtx = applyCtx,
+        .slot = stubHookContext.slot,
+        .slot_free = stubHookContext.slot_free,
+        .slot_counter = stubHookContext.slot_counter,
+        .emit_nonce_counter = stubHookContext.emit_nonce_counter,
+        .ledger_nonce_counter = stubHookContext.ledger_nonce_counter,
+        .expected_etxn_count = stubHookContext.expected_etxn_count,
+        .nonce_used = stubHookContext.nonce_used,
+        .generation = stubHookContext.generation,
+        .burden = stubHookContext.burden,
+        .guard_map = stubHookContext.guard_map,
+        .result =
+            {
+                .hookSetTxnID = result.hookSetTxnID,
+                .hookHash = result.hookHash,
+                .hookCanEmit = result.hookCanEmit,
+                .accountKeylet = keylet::account(hookAccount),
+                .hookKeylet = keylet::hook(hookAccount),
+                .account = hookAccount,
+                .otxnAccount = otxnAccount,
+                .hookNamespace = result.hookNamespace,
+                .emittedTxn = result.emittedTxn,
+                .stateMap = stateMap,
+                .changedStateCount = result.changedStateCount,
+                .hookParamOverrides = result.hookParamOverrides,
+                .hookParams = hookParams,
+                .hookSkips = result.hookSkips,
+                .exitType = result.exitType,
+                .exitReason = result.exitReason,
+                .exitCode = result.exitCode,
+                .instructionCount = result.instructionCount,
+                .hasCallback = result.hasCallback,
+                .isCallback = result.isCallback,
+                .isStrong = result.isStrong,
+                .wasmParam = result.wasmParam,
+                .overrideCount = result.overrideCount,
+                .hookChainPosition = result.hookChainPosition,
+                .foreignStateSetDisabled = result.foreignStateSetDisabled,
+                .executeAgainAsWeak = result.executeAgainAsWeak,
+                .provisionalMeta = result.provisionalMeta,
+            },
+        .emitFailure = stubHookContext.emitFailure,
+        .module = nullptr};
+}
+
+// Original function - WARNING: stateMap reference may become dangling
+// Only use when stateMap access is not needed after HookContext creation
+hook::HookContext
+makeStubHookContext(
+    ripple::ApplyContext& applyCtx,
+    ripple::AccountID const& hookAccount,
+    ripple::AccountID const& otxnAccount,
+    StubHookContext const& stubHookContext)
+{
+    // Use thread_local to keep stateMap alive
+    // Note: This is a workaround; each call resets the stateMap
+    thread_local hook::HookStateMap stateMap;
+    stateMap = stubHookContext.result.stateMap.value_or(hook::HookStateMap{});
+    return makeStubHookContext(
+        applyCtx, hookAccount, otxnAccount, stubHookContext, stateMap);
+}
+
 }  // namespace jtx
 }  // namespace test
 }  // namespace ripple