Merge branch 'develop' into pratik/Add_checks_db_objects

.github/CODEOWNERS

@@ -1,2 +1,8 @@
 # Allow anyone to review any change by default.
 *
+
+# Require the rpc-reviewers team to review changes to the rpc code.
+include/xrpl/protocol/ @xrplf/rpc-reviewers
+src/libxrpl/protocol/ @xrplf/rpc-reviewers
+src/xrpld/rpc/ @xrplf/rpc-reviewers
+src/xrpld/app/misc/ @xrplf/rpc-reviewers

.github/actions/build-deps/action.yml

@@ -4,6 +4,9 @@ description: "Install Conan dependencies, optionally forcing a rebuild of all de
 # Note that actions do not support 'type' and all inputs are strings, see
 # https://docs.github.com/en/actions/reference/workflows-and-actions/metadata-syntax#inputs.
 inputs:
+  build_dir:
+    description: "The directory where to build."
+    required: true
   build_type:
     description: 'The build type to use ("Debug", "Release").'
     required: true
@@ -25,13 +28,17 @@ runs:
     - name: Install Conan dependencies
       shell: bash
       env:
+        BUILD_DIR: ${{ inputs.build_dir }}
         BUILD_NPROC: ${{ inputs.build_nproc }}
         BUILD_OPTION: ${{ inputs.force_build == 'true' && '*' || 'missing' }}
         BUILD_TYPE: ${{ inputs.build_type }}
         LOG_VERBOSITY: ${{ inputs.log_verbosity }}
       run: |
         echo 'Installing dependencies.'
+        mkdir -p "${BUILD_DIR}"
+        cd "${BUILD_DIR}"
         conan install \
+          --output-folder . \
           --build="${BUILD_OPTION}" \
           --options:host='&:tests=True' \
           --options:host='&:xrpld=True' \
@@ -39,4 +46,4 @@ runs:
           --conf:all tools.build:jobs=${BUILD_NPROC} \
           --conf:all tools.build:verbosity="${LOG_VERBOSITY}" \
           --conf:all tools.compilation:verbosity="${LOG_VERBOSITY}" \
-          .
+          ..

.github/scripts/rename/README.md

@@ -29,8 +29,6 @@ run from the repository root.
 4. `.github/scripts/rename/binary.sh`: This script will rename the binary from
    `rippled` to `xrpld`, and reverses the symlink so that `rippled` points to
    the `xrpld` binary.
-5. `.github/scripts/rename/namespace.sh`: This script will rename the C++
-   namespaces from `ripple` to `xrpl`.
 
 You can run all these scripts from the repository root as follows:
 
@@ -39,5 +37,4 @@ You can run all these scripts from the repository root as follows:
 ./.github/scripts/rename/copyright.sh .
 ./.github/scripts/rename/cmake.sh .
 ./.github/scripts/rename/binary.sh .
-./.github/scripts/rename/namespace.sh .
 ```

.github/scripts/rename/namespace.sh

@@ -1,58 +0,0 @@
-#!/bin/bash
-
-# Exit the script as soon as an error occurs.
-set -e
-
-# On MacOS, ensure that GNU sed is installed and available as `gsed`.
-SED_COMMAND=sed
-if [[ "${OSTYPE}" == 'darwin'* ]]; then
-  if ! command -v gsed &> /dev/null; then
-      echo "Error: gsed is not installed. Please install it using 'brew install gnu-sed'."
-      exit 1
-  fi
-  SED_COMMAND=gsed
-fi
-
-# This script renames the `ripple` namespace to `xrpl` in this project.
-# Specifically, it renames all occurrences of `namespace ripple` and `ripple::`
-# to `namespace xrpl` and `xrpl::`, respectively, by scanning all header and
-# source files in the specified directory and its subdirectories, as well as any
-# occurrences in the documentation. It also renames them in the test suites.
-# Usage: .github/scripts/rename/namespace.sh <repository directory>
-
-if [ "$#" -ne 1 ]; then
-    echo "Usage: $0 <repository directory>"
-    exit 1
-fi
-
-DIRECTORY=$1
-echo "Processing directory: ${DIRECTORY}"
-if [ ! -d "${DIRECTORY}" ]; then
-    echo "Error: Directory '${DIRECTORY}' does not exist."
-    exit 1
-fi
-pushd ${DIRECTORY}
-
-DIRECTORIES=("include" "src" "tests")
-for DIRECTORY in "${DIRECTORIES[@]}"; do
-  echo "Processing directory: ${DIRECTORY}"
-
-  find "${DIRECTORY}" -type f \( -name "*.h" -o -name "*.hpp" -o -name "*.ipp" -o -name "*.cpp" \) | while read -r FILE; do
-      echo "Processing file: ${FILE}"
-      ${SED_COMMAND} -i 's/namespace ripple/namespace xrpl/g' "${FILE}"
-      ${SED_COMMAND} -i 's/ripple::/xrpl::/g' "${FILE}"
-      ${SED_COMMAND} -i -E 's/(BEAST_DEFINE_TESTSUITE.+)ripple(.+)/\1xrpl\2/g' "${FILE}"
-  done
-done
-
-# Special case for NuDBFactory that has ripple twice in the test suite name.
-${SED_COMMAND} -i -E 's/(BEAST_DEFINE_TESTSUITE.+)ripple(.+)/\1xrpl\2/g' src/test/nodestore/NuDBFactory_test.cpp
-
-DIRECTORY=$1
-find "${DIRECTORY}" -type f -name "*.md" | while read -r FILE; do
-    echo "Processing file: ${FILE}"
-    ${SED_COMMAND} -i 's/ripple::/xrpl::/g' "${FILE}"
-done
-
-popd
-echo "Renaming complete."

.github/scripts/strategy-matrix/linux.json

@@ -15,196 +15,196 @@
       "distro_version": "bookworm",
       "compiler_name": "gcc",
       "compiler_version": "12",
-      "image_sha": "ca4517d"
+      "image_sha": "0525eae"
     },
     {
       "distro_name": "debian",
       "distro_version": "bookworm",
       "compiler_name": "gcc",
       "compiler_version": "13",
-      "image_sha": "ca4517d"
+      "image_sha": "0525eae"
     },
     {
       "distro_name": "debian",
       "distro_version": "bookworm",
       "compiler_name": "gcc",
       "compiler_version": "14",
-      "image_sha": "ca4517d"
+      "image_sha": "0525eae"
     },
     {
       "distro_name": "debian",
       "distro_version": "bookworm",
       "compiler_name": "gcc",
       "compiler_version": "15",
-      "image_sha": "ca4517d"
+      "image_sha": "0525eae"
     },
     {
       "distro_name": "debian",
       "distro_version": "bookworm",
       "compiler_name": "clang",
       "compiler_version": "16",
-      "image_sha": "ca4517d"
+      "image_sha": "0525eae"
     },
     {
       "distro_name": "debian",
       "distro_version": "bookworm",
       "compiler_name": "clang",
       "compiler_version": "17",
-      "image_sha": "ca4517d"
+      "image_sha": "0525eae"
     },
     {
       "distro_name": "debian",
       "distro_version": "bookworm",
       "compiler_name": "clang",
       "compiler_version": "18",
-      "image_sha": "ca4517d"
+      "image_sha": "0525eae"
     },
     {
       "distro_name": "debian",
       "distro_version": "bookworm",
       "compiler_name": "clang",
       "compiler_version": "19",
-      "image_sha": "ca4517d"
+      "image_sha": "0525eae"
     },
     {
       "distro_name": "debian",
       "distro_version": "bookworm",
       "compiler_name": "clang",
       "compiler_version": "20",
-      "image_sha": "ca4517d"
+      "image_sha": "0525eae"
     },
     {
       "distro_name": "debian",
       "distro_version": "trixie",
       "compiler_name": "gcc",
       "compiler_version": "14",
-      "image_sha": "ca4517d"
+      "image_sha": "0525eae"
     },
     {
       "distro_name": "debian",
       "distro_version": "trixie",
       "compiler_name": "gcc",
       "compiler_version": "15",
-      "image_sha": "ca4517d"
+      "image_sha": "0525eae"
     },
     {
       "distro_name": "debian",
       "distro_version": "trixie",
       "compiler_name": "clang",
       "compiler_version": "20",
-      "image_sha": "ca4517d"
+      "image_sha": "0525eae"
     },
     {
       "distro_name": "debian",
       "distro_version": "trixie",
       "compiler_name": "clang",
       "compiler_version": "21",
-      "image_sha": "ca4517d"
+      "image_sha": "0525eae"
     },
     {
       "distro_name": "rhel",
       "distro_version": "8",
       "compiler_name": "gcc",
       "compiler_version": "14",
-      "image_sha": "ca4517d"
+      "image_sha": "e1782cd"
     },
     {
       "distro_name": "rhel",
       "distro_version": "8",
       "compiler_name": "clang",
       "compiler_version": "any",
-      "image_sha": "ca4517d"
+      "image_sha": "e1782cd"
     },
     {
       "distro_name": "rhel",
       "distro_version": "9",
       "compiler_name": "gcc",
       "compiler_version": "12",
-      "image_sha": "ca4517d"
+      "image_sha": "e1782cd"
     },
     {
       "distro_name": "rhel",
       "distro_version": "9",
       "compiler_name": "gcc",
       "compiler_version": "13",
-      "image_sha": "ca4517d"
+      "image_sha": "e1782cd"
     },
     {
       "distro_name": "rhel",
       "distro_version": "9",
       "compiler_name": "gcc",
       "compiler_version": "14",
-      "image_sha": "ca4517d"
+      "image_sha": "e1782cd"
     },
     {
       "distro_name": "rhel",
       "distro_version": "9",
       "compiler_name": "clang",
       "compiler_version": "any",
-      "image_sha": "ca4517d"
+      "image_sha": "e1782cd"
     },
     {
       "distro_name": "rhel",
       "distro_version": "10",
       "compiler_name": "gcc",
       "compiler_version": "14",
-      "image_sha": "ca4517d"
+      "image_sha": "e1782cd"
     },
     {
       "distro_name": "rhel",
       "distro_version": "10",
       "compiler_name": "clang",
       "compiler_version": "any",
-      "image_sha": "ca4517d"
+      "image_sha": "e1782cd"
     },
     {
       "distro_name": "ubuntu",
       "distro_version": "jammy",
       "compiler_name": "gcc",
       "compiler_version": "12",
-      "image_sha": "ca4517d"
+      "image_sha": "e1782cd"
     },
     {
       "distro_name": "ubuntu",
       "distro_version": "noble",
       "compiler_name": "gcc",
       "compiler_version": "13",
-      "image_sha": "ca4517d"
+      "image_sha": "e1782cd"
     },
     {
       "distro_name": "ubuntu",
       "distro_version": "noble",
       "compiler_name": "gcc",
       "compiler_version": "14",
-      "image_sha": "ca4517d"
+      "image_sha": "e1782cd"
     },
     {
       "distro_name": "ubuntu",
       "distro_version": "noble",
       "compiler_name": "clang",
       "compiler_version": "16",
-      "image_sha": "ca4517d"
+      "image_sha": "e1782cd"
     },
     {
       "distro_name": "ubuntu",
       "distro_version": "noble",
       "compiler_name": "clang",
       "compiler_version": "17",
-      "image_sha": "ca4517d"
+      "image_sha": "e1782cd"
     },
     {
       "distro_name": "ubuntu",
       "distro_version": "noble",
       "compiler_name": "clang",
       "compiler_version": "18",
-      "image_sha": "ca4517d"
+      "image_sha": "e1782cd"
     },
     {
       "distro_name": "ubuntu",
       "distro_version": "noble",
       "compiler_name": "clang",
       "compiler_version": "19",
-      "image_sha": "ca4517d"
+      "image_sha": "e1782cd"
     }
   ],
   "build_type": ["Debug", "Release"],

.github/workflows/publish-docs.yml

@@ -22,7 +22,7 @@ defaults:
     shell: bash
 
 env:
-  BUILD_DIR: build
+  BUILD_DIR: .build
   NPROC_SUBTRACT: 2
 
 jobs:
@@ -36,7 +36,7 @@ jobs:
         uses: actions/checkout@08eba0b27e820071cde6df949e0beb9ba4906955 # v4.3.0
 
       - name: Get number of processors
-        uses: XRPLF/actions/get-nproc@2ece4ec6ab7de266859a6f053571425b2bd684b6
+        uses: XRPLF/actions/.github/actions/get-nproc@046b1620f6bfd6cd0985dc82c3df02786801fe0a
         id: nproc
         with:
           subtract: ${{ env.NPROC_SUBTRACT }}

.github/workflows/reusable-build-test-config.yml

@@ -3,6 +3,11 @@ name: Build and test configuration
 on:
   workflow_call:
     inputs:
+      build_dir:
+        description: "The directory where to build."
+        required: true
+        type: string
+
       build_only:
         description: 'Whether to only build or to build and test the code ("true", "false").'
         required: true
@@ -54,11 +59,6 @@ defaults:
   run:
     shell: bash
 
-env:
-  # Conan installs the generators in the build/generators directory, see the
-  # layout() method in conanfile.py. We then run CMake from the build directory.
-  BUILD_DIR: build
-
 jobs:
   build-and-test:
     name: ${{ inputs.config_name }}
@@ -71,13 +71,13 @@ jobs:
     steps:
       - name: Cleanup workspace (macOS and Windows)
         if: ${{ runner.os == 'macOS' || runner.os == 'Windows' }}
-        uses: XRPLF/actions/cleanup-workspace@2ece4ec6ab7de266859a6f053571425b2bd684b6
+        uses: XRPLF/actions/.github/actions/cleanup-workspace@01b244d2718865d427b499822fbd3f15e7197fcc
 
       - name: Checkout repository
         uses: actions/checkout@08eba0b27e820071cde6df949e0beb9ba4906955 # v4.3.0
 
       - name: Prepare runner
-        uses: XRPLF/actions/prepare-runner@2ece4ec6ab7de266859a6f053571425b2bd684b6
+        uses: XRPLF/actions/.github/actions/prepare-runner@99685816bb60a95a66852f212f382580e180df3a
         with:
           disable_ccache: false
 
@@ -85,7 +85,7 @@ jobs:
         uses: ./.github/actions/print-env
 
       - name: Get number of processors
-        uses: XRPLF/actions/get-nproc@2ece4ec6ab7de266859a6f053571425b2bd684b6
+        uses: XRPLF/actions/.github/actions/get-nproc@046b1620f6bfd6cd0985dc82c3df02786801fe0a
         id: nproc
         with:
           subtract: ${{ inputs.nproc_subtract }}
@@ -96,6 +96,7 @@ jobs:
       - name: Build dependencies
         uses: ./.github/actions/build-deps
         with:
+          build_dir: ${{ inputs.build_dir }}
           build_nproc: ${{ steps.nproc.outputs.nproc }}
           build_type: ${{ inputs.build_type }}
           # Set the verbosity to "quiet" for Windows to avoid an excessive
@@ -103,7 +104,7 @@ jobs:
           log_verbosity: ${{ runner.os == 'Windows' && 'quiet' || 'verbose' }}
 
       - name: Configure CMake
-        working-directory: ${{ env.BUILD_DIR }}
+        working-directory: ${{ inputs.build_dir }}
         env:
           BUILD_TYPE: ${{ inputs.build_type }}
           CMAKE_ARGS: ${{ inputs.cmake_args }}
@@ -116,7 +117,7 @@ jobs:
             ..
 
       - name: Build the binary
-        working-directory: ${{ env.BUILD_DIR }}
+        working-directory: ${{ inputs.build_dir }}
         env:
           BUILD_NPROC: ${{ steps.nproc.outputs.nproc }}
           BUILD_TYPE: ${{ inputs.build_type }}
@@ -131,6 +132,8 @@ jobs:
       - name: Upload the binary (Linux)
         if: ${{ github.repository_owner == 'XRPLF' && runner.os == 'Linux' }}
         uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
+        env:
+          BUILD_DIR: ${{ inputs.build_dir }}
         with:
           name: xrpld-${{ inputs.config_name }}
           path: ${{ env.BUILD_DIR }}/xrpld
@@ -139,7 +142,7 @@ jobs:
 
       - name: Check linking (Linux)
         if: ${{ runner.os == 'Linux' }}
-        working-directory: ${{ env.BUILD_DIR }}
+        working-directory: ${{ inputs.build_dir }}
         run: |
           ldd ./xrpld
           if [ "$(ldd ./xrpld | grep -E '(libstdc\+\+|libgcc)' | wc -l)" -eq 0 ]; then
@@ -151,13 +154,13 @@ jobs:
 
       - name: Verify presence of instrumentation (Linux)
         if: ${{ runner.os == 'Linux' && env.ENABLED_VOIDSTAR == 'true' }}
-        working-directory: ${{ env.BUILD_DIR }}
+        working-directory: ${{ inputs.build_dir }}
         run: |
           ./xrpld --version | grep libvoidstar
 
       - name: Run the separate tests
         if: ${{ !inputs.build_only }}
-        working-directory: ${{ env.BUILD_DIR }}
+        working-directory: ${{ inputs.build_dir }}
         # Windows locks some of the build files while running tests, and parallel jobs can collide
         env:
           BUILD_TYPE: ${{ inputs.build_type }}
@@ -170,7 +173,7 @@ jobs:
 
       - name: Run the embedded tests
         if: ${{ !inputs.build_only }}
-        working-directory: ${{ runner.os == 'Windows' && format('{0}/{1}', env.BUILD_DIR, inputs.build_type) || env.BUILD_DIR }}
+        working-directory: ${{ runner.os == 'Windows' && format('{0}/{1}', inputs.build_dir, inputs.build_type) || inputs.build_dir }}
         env:
           BUILD_NPROC: ${{ steps.nproc.outputs.nproc }}
         run: |
@@ -186,7 +189,7 @@ jobs:
 
       - name: Prepare coverage report
         if: ${{ !inputs.build_only && env.ENABLED_COVERAGE == 'true' }}
-        working-directory: ${{ env.BUILD_DIR }}
+        working-directory: ${{ inputs.build_dir }}
         env:
           BUILD_NPROC: ${{ steps.nproc.outputs.nproc }}
           BUILD_TYPE: ${{ inputs.build_type }}
@@ -204,7 +207,7 @@ jobs:
           disable_search: true
           disable_telem: true
           fail_ci_if_error: true
-          files: ${{ env.BUILD_DIR }}/coverage.xml
+          files: ${{ inputs.build_dir }}/coverage.xml
           plugins: noop
           token: ${{ secrets.CODECOV_TOKEN }}
           verbose: true

.github/workflows/reusable-build-test.yml

@@ -8,6 +8,11 @@ name: Build and test
 on:
   workflow_call:
     inputs:
+      build_dir:
+        description: "The directory where to build."
+        required: false
+        type: string
+        default: ".build"
       os:
         description: 'The operating system to use for the build ("linux", "macos", "windows").'
         required: true
@@ -41,6 +46,7 @@ jobs:
       matrix: ${{ fromJson(needs.generate-matrix.outputs.matrix) }}
       max-parallel: 10
     with:
+      build_dir: ${{ inputs.build_dir }}
       build_only: ${{ matrix.build_only }}
       build_type: ${{ matrix.build_type }}
       cmake_args: ${{ matrix.cmake_args }}

.github/workflows/reusable-check-rename.yml

@@ -27,8 +27,6 @@ jobs:
         run: .github/scripts/rename/cmake.sh .
       - name: Check binary name
         run: .github/scripts/rename/binary.sh .
-      - name: Check namespaces
-        run: .github/scripts/rename/namespace.sh .
       - name: Check for differences
         env:
           MESSAGE: |

.github/workflows/upload-conan-deps.yml

@@ -64,13 +64,13 @@ jobs:
     steps:
       - name: Cleanup workspace (macOS and Windows)
         if: ${{ runner.os == 'macOS' || runner.os == 'Windows' }}
-        uses: XRPLF/actions/cleanup-workspace@2ece4ec6ab7de266859a6f053571425b2bd684b6
+        uses: XRPLF/actions/.github/actions/cleanup-workspace@01b244d2718865d427b499822fbd3f15e7197fcc
 
       - name: Checkout repository
         uses: actions/checkout@08eba0b27e820071cde6df949e0beb9ba4906955 # v4.3.0
 
       - name: Prepare runner
-        uses: XRPLF/actions/prepare-runner@2ece4ec6ab7de266859a6f053571425b2bd684b6
+        uses: XRPLF/actions/.github/actions/prepare-runner@99685816bb60a95a66852f212f382580e180df3a
         with:
           disable_ccache: false
 
@@ -78,7 +78,7 @@ jobs:
         uses: ./.github/actions/print-env
 
       - name: Get number of processors
-        uses: XRPLF/actions/get-nproc@2ece4ec6ab7de266859a6f053571425b2bd684b6
+        uses: XRPLF/actions/.github/actions/get-nproc@046b1620f6bfd6cd0985dc82c3df02786801fe0a
         id: nproc
         with:
           subtract: ${{ env.NPROC_SUBTRACT }}
@@ -92,6 +92,7 @@ jobs:
       - name: Build dependencies
         uses: ./.github/actions/build-deps
         with:
+          build_dir: .build
           build_nproc: ${{ steps.nproc.outputs.nproc }}
           build_type: ${{ matrix.build_type }}
           force_build: ${{ github.event_name == 'schedule' || github.event.inputs.force_source_build == 'true' }}

CMakeLists.txt

@@ -113,7 +113,6 @@ find_package(date REQUIRED)
 find_package(ed25519 REQUIRED)
 find_package(nudb REQUIRED)
 find_package(secp256k1 REQUIRED)
-find_package(wasmi REQUIRED)
 find_package(xxHash REQUIRED)
 
 target_link_libraries(xrpl_libs INTERFACE

CONTRIBUTING.md

@@ -304,7 +304,7 @@ For this reason:
 - Example **bad** name
   `"RFC1751::insert(char* s, int x, int start, int length) : length is greater than or equal zero"`
   (missing namespace, unnecessary full function signature, description too verbose).
-  Good name: `"xrpl::RFC1751::insert : minimum length"`.
+  Good name: `"ripple::RFC1751::insert : minimum length"`.
 - In **few** well-justified cases a non-standard name can be used, in which case a
   comment should be placed to explain the rationale (example in `contract.cpp`)
 - Do **not** rename a contract without a good reason (e.g. the name no longer

cfg/rippled-example.cfg

@@ -1290,39 +1290,6 @@
 #       Example:
 #           owner_reserve = 2000000      # 2 XRP
 #
-#   extension_compute_limit = <gas>
-#
-#       The extension compute limit is the maximum amount of gas that can be
-#       consumed by a single transaction. The gas limit is used to prevent
-#       transactions from consuming too many resources.
-#
-#       If this parameter is unspecified, rippled will use an internal
-#       default. Don't change this without understanding the consequences.
-#
-#       Example:
-#           extension_compute_limit = 1000000      # 1 million gas
-#
-#   extension_size_limit = <bytes>
-#
-#       The extension size limit is the maximum size of a WASM extension in
-#       bytes. The size limit is used to prevent extensions from consuming
-#       too many resources.
-#
-#       If this parameter is unspecified, rippled will use an internal
-#       default. Don't change this without understanding the consequences.
-#
-#       Example:
-#           extension_size_limit = 100000      # 100 kb
-#
-#   gas_price = <bytes>
-#
-#       The gas price is the conversion between WASM gas and its price in drops.
-#
-#       If this parameter is unspecified, rippled will use an internal
-#       default. Don't change this without understanding the consequences.
-#
-#       Example:
-#           gas_price = 1000000      # 1 drop per gas
 #-------------------------------------------------------------------------------
 #
 # 9. Misc Settings

cmake/XrplCore.cmake

@@ -63,7 +63,6 @@ target_link_libraries(xrpl.imports.main
     Xrpl::opts
     Xrpl::syslibs
     secp256k1::secp256k1
-    wasmi::wasmi
     xrpl.libpb
     xxHash::xxhash
     $<$<BOOL:${voidstar}>:antithesis-sdk-cpp>

conan.lock

@@ -3,7 +3,6 @@
     "requires": [
         "zlib/1.3.1#b8bc2603263cf7eccbd6e17e66b0ed76%1756234269.497",
         "xxhash/0.8.3#681d36a0a6111fc56e5e45ea182c19cc%1756234289.683",
-        "wasmi/0.42.1#2a96357d4e6bf40dfe201106d849c24f%1764802092.014",
         "sqlite3/3.49.1#8631739a4c9b93bd3d6b753bac548a63%1756234266.869",
         "soci/4.0.3#a9f8d773cd33e356b5879a4b0564f287%1756234262.318",
         "snappy/1.1.10#968fef506ff261592ec30c574d4a7809%1756234314.246",

conanfile.py

@@ -35,7 +35,6 @@ class Xrpl(ConanFile):
         "openssl/3.5.4",
         "secp256k1/0.7.0",
         "soci/4.0.3",
-        "wasmi/0.42.1",
         "zlib/1.3.1",
     ]
 
@@ -213,7 +212,6 @@ class Xrpl(ConanFile):
             "soci::soci",
             "secp256k1::secp256k1",
             "sqlite3::sqlite",
-            "wasmi::wasmi",
             "xxhash::xxhash",
             "zlib::zlib",
         ]

include/xrpl/basics/Archive.h

@@ -3,7 +3,7 @@
 
 #include <boost/filesystem.hpp>
 
-namespace xrpl {
+namespace ripple {
 
 /** Extract a tar archive compressed with lz4
 
@@ -17,6 +17,6 @@ extractTarLz4(
     boost::filesystem::path const& src,
     boost::filesystem::path const& dst);
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/basics/BasicConfig.h

@@ -12,7 +12,7 @@
 #include <unordered_map>
 #include <vector>
 
-namespace xrpl {
+namespace ripple {
 
 using IniFileSections =
     std::unordered_map<std::string, std::vector<std::string>>;
@@ -380,6 +380,6 @@ get_if_exists<bool>(Section const& section, std::string const& name, bool& v)
     return stat;
 }
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/basics/Blob.h

@@ -3,13 +3,13 @@
 
 #include <vector>
 
-namespace xrpl {
+namespace ripple {
 
 /** Storage for linear binary data.
     Blocks of binary data appear often in various idioms and structures.
 */
 using Blob = std::vector<unsigned char>;
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/basics/Buffer.h

@@ -8,7 +8,7 @@
 #include <cstring>
 #include <memory>
 
-namespace xrpl {
+namespace ripple {
 
 /** Like std::vector<char> but better.
     Meets the requirements of BufferFactory.
@@ -96,7 +96,7 @@ public:
         XRPL_ASSERT(
             s.size() == 0 || size_ == 0 || s.data() < p_.get() ||
                 s.data() >= p_.get() + size_,
-            "xrpl::Buffer::operator=(Slice) : input not a subset");
+            "ripple::Buffer::operator=(Slice) : input not a subset");
 
         if (auto p = alloc(s.size()))
             std::memcpy(p, s.data(), s.size());
@@ -215,6 +215,6 @@ operator!=(Buffer const& lhs, Buffer const& rhs) noexcept
     return !(lhs == rhs);
 }
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/basics/ByteUtilities.h

@@ -1,7 +1,7 @@
 #ifndef XRPL_BASICS_BYTEUTILITIES_H_INCLUDED
 #define XRPL_BASICS_BYTEUTILITIES_H_INCLUDED
 
-namespace xrpl {
+namespace ripple {
 
 template <class T>
 constexpr auto
@@ -19,6 +19,6 @@ megabytes(T value) noexcept
 
 static_assert(kilobytes(2) == 2048, "kilobytes(2) == 2048");
 static_assert(megabytes(3) == 3145728, "megabytes(3) == 3145728");
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/basics/CompressionAlgorithms.h

@@ -10,7 +10,7 @@
 #include <stdexcept>
 #include <vector>
 
-namespace xrpl {
+namespace ripple {
 
 namespace compression_algorithms {
 
@@ -144,6 +144,6 @@ lz4Decompress(
 
 }  // namespace compression_algorithms
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif  // XRPL_COMPRESSIONALGORITHMS_H_INCLUDED

include/xrpl/basics/CountedObject.h

@@ -8,7 +8,7 @@
 #include <utility>
 #include <vector>
 
-namespace xrpl {
+namespace ripple {
 
 /** Manages all counted object types. */
 class CountedObjects
@@ -133,6 +133,6 @@ public:
     }
 };
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/basics/DecayingSample.h

@@ -4,7 +4,7 @@
 #include <chrono>
 #include <cmath>
 
-namespace xrpl {
+namespace ripple {
 
 /** Sampling function using exponential decay to provide a continuous value.
     @tparam The number of seconds in the decay window.
@@ -131,6 +131,6 @@ private:
     time_point when_;
 };
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/basics/Expected.h

@@ -7,7 +7,7 @@
 
 #include <stdexcept>
 
-namespace xrpl {
+namespace ripple {
 
 /** Expected is an approximation of std::expected (hoped for in C++23)
 
@@ -232,6 +232,6 @@ public:
     }
 };
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif  // XRPL_BASICS_EXPECTED_H_INCLUDED

include/xrpl/basics/FileUtilities.h

@@ -6,7 +6,7 @@
 
 #include <optional>
 
-namespace xrpl {
+namespace ripple {
 
 std::string
 getFileContents(
@@ -20,6 +20,6 @@ writeFileContents(
     boost::filesystem::path const& destPath,
     std::string const& contents);
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/basics/IntrusivePointer.h

@@ -6,7 +6,7 @@
 #include <type_traits>
 #include <utility>
 
-namespace xrpl {
+namespace ripple {
 
 //------------------------------------------------------------------------------
 
@@ -492,5 +492,5 @@ dynamic_pointer_cast(TT const& v)
     return SharedPtr<T>(DynamicCastTagSharedIntrusive{}, v);
 }
 }  // namespace intr_ptr
-}  // namespace xrpl
+}  // namespace ripple
 #endif

include/xrpl/basics/IntrusivePointer.ipp

@@ -6,7 +6,7 @@
 
 #include <utility>
 
-namespace xrpl {
+namespace ripple {
 
 template <class T>
 template <CAdoptTag TAdoptTag>
@@ -608,7 +608,7 @@ SharedWeakUnion<T>::convertToStrong()
         [[maybe_unused]] auto action = p->releaseWeakRef();
         XRPL_ASSERT(
             (action == ReleaseWeakRefAction::noop),
-            "xrpl::SharedWeakUnion::convertToStrong : "
+            "ripple::SharedWeakUnion::convertToStrong : "
             "action is noop");
         unsafeSetRawPtr(p, RefStrength::strong);
         return true;
@@ -637,7 +637,7 @@ SharedWeakUnion<T>::convertToWeak()
             // We just added a weak ref. How could we destroy?
             // LCOV_EXCL_START
             UNREACHABLE(
-                "xrpl::SharedWeakUnion::convertToWeak : destroying freshly "
+                "ripple::SharedWeakUnion::convertToWeak : destroying freshly "
                 "added ref");
             delete p;
             unsafeSetRawPtr(nullptr);
@@ -719,5 +719,5 @@ SharedWeakUnion<T>::unsafeReleaseNoStore()
     }
 }
 
-}  // namespace xrpl
+}  // namespace ripple
 #endif

include/xrpl/basics/IntrusiveRefCounts.h

@@ -6,7 +6,7 @@
 #include <atomic>
 #include <cstdint>
 
-namespace xrpl {
+namespace ripple {
 
 /** Action to perform when releasing a strong pointer.
 
@@ -34,7 +34,7 @@ enum class ReleaseWeakRefAction { noop, destroy };
 /** Implement the strong count, weak count, and bit flags for an intrusive
     pointer.
 
-    A class can satisfy the requirements of a xrpl::IntrusivePointer by
+    A class can satisfy the requirements of a ripple::IntrusivePointer by
     inheriting from this class.
   */
 struct IntrusiveRefCounts
@@ -257,7 +257,7 @@ IntrusiveRefCounts::releaseStrongRef() const
         RefCountPair const prevVal{prevIntVal};
         XRPL_ASSERT(
             (prevVal.strong >= strongDelta),
-            "xrpl::IntrusiveRefCounts::releaseStrongRef : previous ref "
+            "ripple::IntrusiveRefCounts::releaseStrongRef : previous ref "
             "higher than new");
         auto nextIntVal = prevIntVal - strongDelta;
         ReleaseStrongRefAction action = noop;
@@ -282,7 +282,7 @@ IntrusiveRefCounts::releaseStrongRef() const
             // twice.
             XRPL_ASSERT(
                 (action == noop) || !(prevIntVal & partialDestroyStartedMask),
-                "xrpl::IntrusiveRefCounts::releaseStrongRef : not in partial "
+                "ripple::IntrusiveRefCounts::releaseStrongRef : not in partial "
                 "destroy");
             return action;
         }
@@ -314,7 +314,7 @@ IntrusiveRefCounts::addWeakReleaseStrongRef() const
         // can't happen twice.
         XRPL_ASSERT(
             (!prevVal.partialDestroyStartedBit),
-            "xrpl::IntrusiveRefCounts::addWeakReleaseStrongRef : not in "
+            "ripple::IntrusiveRefCounts::addWeakReleaseStrongRef : not in "
             "partial destroy");
 
         auto nextIntVal = prevIntVal + delta;
@@ -336,7 +336,7 @@ IntrusiveRefCounts::addWeakReleaseStrongRef() const
         {
             XRPL_ASSERT(
                 (!(prevIntVal & partialDestroyStartedMask)),
-                "xrpl::IntrusiveRefCounts::addWeakReleaseStrongRef : not "
+                "ripple::IntrusiveRefCounts::addWeakReleaseStrongRef : not "
                 "started partial destroy");
             return action;
         }
@@ -408,11 +408,11 @@ inline IntrusiveRefCounts::~IntrusiveRefCounts() noexcept
     auto v = refCounts.load(std::memory_order_acquire);
     XRPL_ASSERT(
         (!(v & valueMask)),
-        "xrpl::IntrusiveRefCounts::~IntrusiveRefCounts : count must be zero");
+        "ripple::IntrusiveRefCounts::~IntrusiveRefCounts : count must be zero");
     auto t = v & tagMask;
     XRPL_ASSERT(
         (!t || t == tagMask),
-        "xrpl::IntrusiveRefCounts::~IntrusiveRefCounts : valid tag");
+        "ripple::IntrusiveRefCounts::~IntrusiveRefCounts : valid tag");
 #endif
 }
 
@@ -427,7 +427,7 @@ inline IntrusiveRefCounts::RefCountPair::RefCountPair(
 {
     XRPL_ASSERT(
         (strong < checkStrongMaxValue && weak < checkWeakMaxValue),
-        "xrpl::IntrusiveRefCounts::RefCountPair(FieldType) : inputs inside "
+        "ripple::IntrusiveRefCounts::RefCountPair(FieldType) : inputs inside "
         "range");
 }
 
@@ -438,7 +438,7 @@ inline IntrusiveRefCounts::RefCountPair::RefCountPair(
 {
     XRPL_ASSERT(
         (strong < checkStrongMaxValue && weak < checkWeakMaxValue),
-        "xrpl::IntrusiveRefCounts::RefCountPair(CountType, CountType) : "
+        "ripple::IntrusiveRefCounts::RefCountPair(CountType, CountType) : "
         "inputs inside range");
 }
 
@@ -447,7 +447,7 @@ IntrusiveRefCounts::RefCountPair::combinedValue() const noexcept
 {
     XRPL_ASSERT(
         (strong < checkStrongMaxValue && weak < checkWeakMaxValue),
-        "xrpl::IntrusiveRefCounts::RefCountPair::combinedValue : inputs "
+        "ripple::IntrusiveRefCounts::RefCountPair::combinedValue : inputs "
         "inside range");
     return (static_cast<IntrusiveRefCounts::FieldType>(weak)
             << IntrusiveRefCounts::StrongCountNumBits) |
@@ -465,7 +465,7 @@ partialDestructorFinished(T** o)
     XRPL_ASSERT(
         (!p.partialDestroyFinishedBit && p.partialDestroyStartedBit &&
          !p.strong),
-        "xrpl::partialDestructorFinished : not a weak ref");
+        "ripple::partialDestructorFinished : not a weak ref");
     if (!p.weak)
     {
         // There was a weak count before the partial destructor ran (or we would
@@ -479,5 +479,5 @@ partialDestructorFinished(T** o)
 }
 //------------------------------------------------------------------------------
 
-}  // namespace xrpl
+}  // namespace ripple
 #endif

include/xrpl/basics/KeyCache.h

@@ -4,10 +4,10 @@
 #include <xrpl/basics/TaggedCache.h>
 #include <xrpl/basics/base_uint.h>
 
-namespace xrpl {
+namespace ripple {
 
 using KeyCache = TaggedCache<uint256, int, true>;
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif  // XRPL_BASICS_KEYCACHE_H

include/xrpl/basics/LocalValue.h

@@ -6,7 +6,7 @@
 #include <memory>
 #include <unordered_map>
 
-namespace xrpl {
+namespace ripple {
 
 namespace detail {
 
@@ -109,6 +109,6 @@ LocalValue<T>::operator*()
             .emplace(this, std::make_unique<detail::LocalValues::Value<T>>(t_))
             .first->second->get());
 }
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/basics/Log.h

@@ -13,7 +13,7 @@
 #include <mutex>
 #include <utility>
 
-namespace xrpl {
+namespace ripple {
 
 // DEPRECATED use beast::severities::Severity instead
 enum LogSeverity {
@@ -271,6 +271,6 @@ setDebugLogSink(std::unique_ptr<beast::Journal::Sink> sink);
 beast::Journal
 debugLog();
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/basics/MathUtilities.h

@@ -5,7 +5,7 @@
 #include <cassert>
 #include <cstddef>
 
-namespace xrpl {
+namespace ripple {
 
 /** Calculate one number divided by another number in percentage.
  * The result is rounded up to the next integer, and capped in the range [0,100]
@@ -44,6 +44,6 @@ static_assert(calculatePercent(50'000'000, 100'000'000) == 50);
 static_assert(calculatePercent(50'000'001, 100'000'000) == 51);
 static_assert(calculatePercent(99'999'999, 100'000'000) == 100);
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/basics/Number.h

@@ -6,7 +6,7 @@
 #include <ostream>
 #include <string>
 
-namespace xrpl {
+namespace ripple {
 
 class Number;
 
@@ -339,10 +339,6 @@ abs(Number x) noexcept
 Number
 power(Number const& f, unsigned n);
 
-// logarithm with base 10
-Number
-lg(Number const& value);
-
 // Returns f^(1/d)
 // Uses Newton–Raphson iterations until the result stops changing
 // to find the root of the polynomial g(x) = x^d - f
@@ -406,6 +402,6 @@ public:
     operator=(NumberRoundModeGuard const&) = delete;
 };
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif  // XRPL_BASICS_NUMBER_H_INCLUDED

include/xrpl/basics/README.md

@@ -21,11 +21,11 @@ ripple/basic should contain no dependencies on other modules.
 - `std::set`
   - For sorted containers.
 
-- `xrpl::hash_set`
+- `ripple::hash_set`
   - Where inserts and contains need to be O(1).
   - For "small" sets, `std::set` might be faster and smaller.
 
-- `xrpl::hardened_hash_set`
+- `ripple::hardened_hash_set`
   - For data sets where the key could be manipulated by an attacker
     in an attempt to mount an algorithmic complexity attack: see
     http://en.wikipedia.org/wiki/Algorithmic_complexity_attack
@@ -33,5 +33,5 @@ ripple/basic should contain no dependencies on other modules.
 The following container is deprecated
 
 - `std::unordered_set`
-- Use `xrpl::hash_set` instead, which uses a better hashing algorithm.
-- Or use `xrpl::hardened_hash_set` to prevent algorithmic complexity attacks.
+- Use `ripple::hash_set` instead, which uses a better hashing algorithm.
+- Or use `ripple::hardened_hash_set` to prevent algorithmic complexity attacks.

include/xrpl/basics/RangeSet.h

@@ -11,7 +11,7 @@
 #include <string>
 #include <vector>
 
-namespace xrpl {
+namespace ripple {
 
 /** A closed interval over the domain T.
 
@@ -85,7 +85,7 @@ to_string(RangeSet<T> const& rs)
 
     std::string s;
     for (auto const& interval : rs)
-        s += xrpl::to_string(interval) + ",";
+        s += ripple::to_string(interval) + ",";
     s.pop_back();
 
     return s;
@@ -172,6 +172,6 @@ prevMissing(RangeSet<T> const& rs, T t, T minVal = 0)
     return boost::icl::last(tgt);
 }
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/basics/Resolver.h

@@ -6,7 +6,7 @@
 #include <functional>
 #include <vector>
 
-namespace xrpl {
+namespace ripple {
 
 class Resolver
 {
@@ -47,6 +47,6 @@ public:
     /** @} */
 };
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/basics/ResolverAsio.h

@@ -6,7 +6,7 @@
 
 #include <boost/asio/io_context.hpp>
 
-namespace xrpl {
+namespace ripple {
 
 class ResolverAsio : public Resolver
 {
@@ -17,6 +17,6 @@ public:
     New(boost::asio::io_context&, beast::Journal);
 };
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/basics/SHAMapHash.h

@@ -6,7 +6,7 @@
 
 #include <ostream>
 
-namespace xrpl {
+namespace ripple {
 
 // A SHAMapHash is the hash of a node in a SHAMap, and also the
 // type of the hash of the entire SHAMap.
@@ -97,6 +97,6 @@ extract(SHAMapHash const& key)
     return *reinterpret_cast<std::size_t const*>(key.as_uint256().data());
 }
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif  // XRPL_BASICS_SHAMAP_HASH_H_INCLUDED

include/xrpl/basics/SharedWeakCachePointer.h

@@ -4,7 +4,7 @@
 #include <memory>
 #include <variant>
 
-namespace xrpl {
+namespace ripple {
 
 /** A combination of a std::shared_ptr and a std::weak_pointer.
 
@@ -112,5 +112,5 @@ public:
 private:
     std::variant<std::shared_ptr<T>, std::weak_ptr<T>> combo_;
 };
-}  // namespace xrpl
+}  // namespace ripple
 #endif

include/xrpl/basics/SharedWeakCachePointer.ipp

@@ -3,7 +3,7 @@
 
 #include <xrpl/basics/SharedWeakCachePointer.h>
 
-namespace xrpl {
+namespace ripple {
 template <class T>
 SharedWeakCachePointer<T>::SharedWeakCachePointer(
     SharedWeakCachePointer const& rhs) = default;
@@ -169,5 +169,5 @@ SharedWeakCachePointer<T>::convertToWeak()
 
     return false;
 }
-}  // namespace xrpl
+}  // namespace ripple
 #endif

include/xrpl/basics/SlabAllocator.h

@@ -22,7 +22,7 @@
 #include <sys/mman.h>
 #endif
 
-namespace xrpl {
+namespace ripple {
 
 template <typename Type>
 class SlabAllocator
@@ -128,7 +128,7 @@ class SlabAllocator
         {
             XRPL_ASSERT(
                 own(ptr),
-                "xrpl::SlabAllocator::SlabBlock::deallocate : own input");
+                "ripple::SlabAllocator::SlabBlock::deallocate : own input");
 
             std::lock_guard l(m_);
 
@@ -173,7 +173,7 @@ public:
     {
         XRPL_ASSERT(
             (itemAlignment_ & (itemAlignment_ - 1)) == 0,
-            "xrpl::SlabAllocator::SlabAllocator : valid alignment");
+            "ripple::SlabAllocator::SlabAllocator : valid alignment");
     }
 
     SlabAllocator(SlabAllocator const& other) = delete;
@@ -285,7 +285,7 @@ public:
     {
         XRPL_ASSERT(
             ptr,
-            "xrpl::SlabAllocator::SlabAllocator::deallocate : non-null "
+            "ripple::SlabAllocator::SlabAllocator::deallocate : non-null "
             "input");
 
         for (auto slab = slabs_.load(); slab != nullptr; slab = slab->next_)
@@ -419,6 +419,6 @@ public:
     }
 };
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif  // XRPL_BASICS_SLABALLOCATOR_H_INCLUDED

include/xrpl/basics/Slice.h

@@ -15,7 +15,7 @@
 #include <type_traits>
 #include <vector>
 
-namespace xrpl {
+namespace ripple {
 
 /** An immutable linear range of bytes.
 
@@ -87,7 +87,7 @@ public:
     {
         XRPL_ASSERT(
             i < size_,
-            "xrpl::Slice::operator[](std::size_t) const : valid input");
+            "ripple::Slice::operator[](std::size_t) const : valid input");
         return data_[i];
     }
 
@@ -243,6 +243,6 @@ makeSlice(std::basic_string<char, Traits, Alloc> const& s)
     return Slice(s.data(), s.size());
 }
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/basics/StringUtilities.h

@@ -12,7 +12,7 @@
 #include <optional>
 #include <string>
 
-namespace xrpl {
+namespace ripple {
 
 /** Format arbitrary binary data as an SQLite "blob literal".
 
@@ -132,6 +132,6 @@ to_uint64(std::string const& s);
 bool
 isProperlyFormedTomlDomain(std::string_view domain);
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/basics/TaggedCache.h

@@ -16,7 +16,7 @@
 #include <type_traits>
 #include <vector>
 
-namespace xrpl {
+namespace ripple {
 
 /** Map/cache combination.
     This class implements a cache and a map. The cache keeps objects alive
@@ -315,6 +315,6 @@ private:
     std::uint64_t m_misses;
 };
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/basics/TaggedCache.ipp

@@ -4,7 +4,7 @@
 #include <xrpl/basics/IntrusivePointer.ipp>
 #include <xrpl/basics/TaggedCache.h>
 
-namespace xrpl {
+namespace ripple {
 
 template <
     class Key,
@@ -1005,6 +1005,6 @@ TaggedCache<
     });
 }
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/basics/ToString.h

@@ -4,7 +4,7 @@
 #include <string>
 #include <type_traits>
 
-namespace xrpl {
+namespace ripple {
 
 /** to_string() generalizes std::to_string to handle bools, chars, and strings.
 
@@ -43,6 +43,6 @@ to_string(char const* s)
     return s;
 }
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/basics/UnorderedContainers.h

@@ -22,7 +22,7 @@
  * what container it is.
  */
 
-namespace xrpl {
+namespace ripple {
 
 // hash containers
 
@@ -102,6 +102,6 @@ template <
 using hardened_hash_multiset =
     std::unordered_multiset<Value, Hash, Pred, Allocator>;
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/basics/UptimeClock.h

@@ -6,7 +6,7 @@
 #include <ratio>
 #include <thread>
 
-namespace xrpl {
+namespace ripple {
 
 /** Tracks program uptime to seconds precision.
 
@@ -45,6 +45,6 @@ private:
     start_clock();
 };
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/basics/algorithm.h

@@ -3,7 +3,7 @@
 
 #include <utility>
 
-namespace xrpl {
+namespace ripple {
 
 // Requires: [first1, last1) and [first2, last2) are ordered ranges according to
 // comp.
@@ -95,6 +95,6 @@ remove_if_intersect_or_match(
     return first1;
 }
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/basics/base64.h

@@ -38,7 +38,7 @@
 #include <cstdint>
 #include <string>
 
-namespace xrpl {
+namespace ripple {
 
 std::string
 base64_encode(std::uint8_t const* data, std::size_t len);
@@ -53,6 +53,6 @@ base64_encode(std::string const& s)
 std::string
 base64_decode(std::string_view data);
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/basics/base_uint.h

@@ -23,7 +23,7 @@
 #include <cstring>
 #include <type_traits>
 
-namespace xrpl {
+namespace ripple {
 
 namespace detail {
 
@@ -275,7 +275,7 @@ public:
     {
         XRPL_ASSERT(
             c.size() * sizeof(typename Container::value_type) == size(),
-            "xrpl::base_uint::base_uint(Container auto) : input size match");
+            "ripple::base_uint::base_uint(Container auto) : input size match");
         std::memcpy(data_.data(), c.data(), size());
     }
 
@@ -288,7 +288,7 @@ public:
     {
         XRPL_ASSERT(
             c.size() * sizeof(typename Container::value_type) == size(),
-            "xrpl::base_uint::operator=(Container auto) : input size match");
+            "ripple::base_uint::operator=(Container auto) : input size match");
         std::memcpy(data_.data(), c.data(), size());
         return *this;
     }
@@ -648,12 +648,12 @@ static_assert(sizeof(uint192) == 192 / 8, "There should be no padding bytes");
 static_assert(sizeof(uint256) == 256 / 8, "There should be no padding bytes");
 #endif
 
-}  // namespace xrpl
+}  // namespace ripple
 
 namespace beast {
 
 template <std::size_t Bits, class Tag>
-struct is_uniquely_represented<xrpl::base_uint<Bits, Tag>>
+struct is_uniquely_represented<ripple::base_uint<Bits, Tag>>
     : public std::true_type
 {
     explicit is_uniquely_represented() = default;

include/xrpl/basics/chrono.h

@@ -12,7 +12,7 @@
 #include <ratio>
 #include <string>
 
-namespace xrpl {
+namespace ripple {
 
 // A few handy aliases
 
@@ -104,6 +104,6 @@ stopwatch()
     return beast::get_abstract_clock<Facade, Clock>();
 }
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/basics/comparators.h

@@ -3,7 +3,7 @@
 
 #include <functional>
 
-namespace xrpl {
+namespace ripple {
 
 #ifdef _MSC_VER
 
@@ -52,6 +52,6 @@ using equal_to = std::equal_to<T>;
 
 #endif
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/basics/contract.h

@@ -7,7 +7,7 @@
 #include <string>
 #include <utility>
 
-namespace xrpl {
+namespace ripple {
 
 /*  Programming By Contract
 
@@ -52,6 +52,6 @@ Throw(Args&&... args)
 [[noreturn]] void
 LogicError(std::string const& how) noexcept;
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/basics/hardened_hash.h

@@ -9,7 +9,7 @@
 #include <random>
 #include <utility>
 
-namespace xrpl {
+namespace ripple {
 
 namespace detail {
 
@@ -92,6 +92,6 @@ public:
     }
 };
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/basics/join.h

@@ -3,7 +3,7 @@
 
 #include <string>
 
-namespace xrpl {
+namespace ripple {
 
 template <class Stream, class Iter>
 Stream&
@@ -85,6 +85,6 @@ public:
     }
 };
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/basics/make_SSLContext.h

@@ -5,7 +5,7 @@
 
 #include <string>
 
-namespace xrpl {
+namespace ripple {
 
 /** Create a self-signed SSL context that allows anonymous Diffie Hellman. */
 std::shared_ptr<boost::asio::ssl::context>
@@ -19,6 +19,6 @@ make_SSLContextAuthed(
     std::string const& chainFile,
     std::string const& cipherList);
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/basics/mulDiv.h

@@ -5,7 +5,7 @@
 #include <limits>
 #include <optional>
 
-namespace xrpl {
+namespace ripple {
 auto constexpr muldiv_max = std::numeric_limits<std::uint64_t>::max();
 
 /** Return value*mul/div accurately.
@@ -21,6 +21,6 @@ auto constexpr muldiv_max = std::numeric_limits<std::uint64_t>::max();
 std::optional<std::uint64_t>
 mulDiv(std::uint64_t value, std::uint64_t mul, std::uint64_t div);
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/basics/partitioned_unordered_map.h

@@ -12,7 +12,7 @@
 #include <utility>
 #include <vector>
 
-namespace xrpl {
+namespace ripple {
 
 template <typename Key>
 static std::size_t
@@ -242,7 +242,7 @@ public:
         map_.resize(partitions_);
         XRPL_ASSERT(
             partitions_,
-            "xrpl::partitioned_unordered_map::partitioned_unordered_map : "
+            "ripple::partitioned_unordered_map::partitioned_unordered_map : "
             "nonzero partitions");
     }
 
@@ -401,6 +401,6 @@ private:
     mutable partition_map_type map_{};
 };
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif  // XRPL_BASICS_PARTITIONED_UNORDERED_MAP_H

include/xrpl/basics/random.h

@@ -11,7 +11,7 @@
 #include <random>
 #include <type_traits>
 
-namespace xrpl {
+namespace ripple {
 
 #ifndef __INTELLISENSE__
 static_assert(
@@ -95,7 +95,7 @@ std::enable_if_t<
     Integral>
 rand_int(Engine& engine, Integral min, Integral max)
 {
-    XRPL_ASSERT(max > min, "xrpl::rand_int : max over min inputs");
+    XRPL_ASSERT(max > min, "ripple::rand_int : max over min inputs");
 
     // This should have no state and constructing it should
     // be very cheap. If that turns out not to be the case
@@ -186,6 +186,6 @@ rand_bool()
 }
 /** @} */
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif  // XRPL_BASICS_RANDOM_H_INCLUDED

include/xrpl/basics/safe_cast.h

@@ -3,7 +3,7 @@
 
 #include <type_traits>
 
-namespace xrpl {
+namespace ripple {
 
 // safe_cast adds compile-time checks to a static_cast to ensure that
 // the destination can hold all values of the source.  This is particularly
@@ -80,6 +80,6 @@ inline constexpr std::
     return unsafe_cast<Dest>(static_cast<std::underlying_type_t<Src>>(s));
 }
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/basics/scope.h

@@ -8,7 +8,7 @@
 #include <type_traits>
 #include <utility>
 
-namespace xrpl {
+namespace ripple {
 
 // RAII scope helpers.  As specified in Library Fundamental, Version 3
 // Basic design of idea:  https://www.youtube.com/watch?v=WjTrfoiB0MQ
@@ -218,7 +218,7 @@ public:
     {
         XRPL_ASSERT(
             plock->owns_lock(),
-            "xrpl::scope_unlock::scope_unlock : mutex must be locked");
+            "ripple::scope_unlock::scope_unlock : mutex must be locked");
         plock->unlock();
     }
 
@@ -236,6 +236,6 @@ public:
 template <class Mutex>
 scope_unlock(std::unique_lock<Mutex>&) -> scope_unlock<Mutex>;
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/basics/spinlock.h

@@ -13,7 +13,7 @@
 #include <immintrin.h>
 #endif
 
-namespace xrpl {
+namespace ripple {
 
 namespace detail {
 /** Inform the processor that we are in a tight spin-wait loop.
@@ -105,7 +105,7 @@ public:
     {
         XRPL_ASSERT(
             index >= 0 && (mask_ != 0),
-            "xrpl::packed_spinlock::packed_spinlock : valid index and mask");
+            "ripple::packed_spinlock::packed_spinlock : valid index and mask");
     }
 
     [[nodiscard]] bool
@@ -206,6 +206,6 @@ public:
 };
 /** @} */
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/basics/strHex.h

@@ -4,7 +4,7 @@
 #include <boost/algorithm/hex.hpp>
 #include <boost/endian/conversion.hpp>
 
-namespace xrpl {
+namespace ripple {
 
 template <class FwdIt>
 std::string
@@ -28,6 +28,6 @@ strHex(T const& from)
     return strHex(from.begin(), from.end());
 }
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/basics/tagged_integer.h

@@ -10,7 +10,7 @@
 #include <iostream>
 #include <type_traits>
 
-namespace xrpl {
+namespace ripple {
 
 /** A type-safe wrap around standard integral types
 
@@ -197,11 +197,11 @@ public:
     }
 };
 
-}  // namespace xrpl
+}  // namespace ripple
 
 namespace beast {
 template <class Int, class Tag, class HashAlgorithm>
-struct is_contiguously_hashable<xrpl::tagged_integer<Int, Tag>, HashAlgorithm>
+struct is_contiguously_hashable<ripple::tagged_integer<Int, Tag>, HashAlgorithm>
     : public is_contiguously_hashable<Int, HashAlgorithm>
 {
     explicit is_contiguously_hashable() = default;

include/xrpl/core/ClosureCounter.h

@@ -8,7 +8,7 @@
 #include <mutex>
 #include <optional>
 
-namespace xrpl {
+namespace ripple {
 
 /**
  * The role of a `ClosureCounter` is to assist in shutdown by letting callers
@@ -202,6 +202,6 @@ public:
     }
 };
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif  // XRPL_CORE_CLOSURE_COUNTER_H_INCLUDED

include/xrpl/core/Coro.ipp

@@ -3,7 +3,7 @@
 
 #include <xrpl/basics/ByteUtilities.h>
 
-namespace xrpl {
+namespace ripple {
 
 template <class F>
 JobQueue::Coro::Coro(
@@ -34,7 +34,7 @@ JobQueue::Coro::Coro(
 inline JobQueue::Coro::~Coro()
 {
 #ifndef NDEBUG
-    XRPL_ASSERT(finished_, "xrpl::JobQueue::Coro::~Coro : is finished");
+    XRPL_ASSERT(finished_, "ripple::JobQueue::Coro::~Coro : is finished");
 #endif
 }
 
@@ -85,7 +85,8 @@ JobQueue::Coro::resume()
     detail::getLocalValues().reset(&lvs_);
     std::lock_guard lock(mutex_);
     XRPL_ASSERT(
-        static_cast<bool>(coro_), "xrpl::JobQueue::Coro::resume : is runnable");
+        static_cast<bool>(coro_),
+        "ripple::JobQueue::Coro::resume : is runnable");
     coro_();
     detail::getLocalValues().release();
     detail::getLocalValues().reset(saved);
@@ -128,6 +129,6 @@ JobQueue::Coro::join()
     cv_.wait(lk, [this]() { return running_ == false; });
 }
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/core/Job.h

@@ -7,7 +7,7 @@
 
 #include <functional>
 
-namespace xrpl {
+namespace ripple {
 
 // Note that this queue should only be used for CPU-bound jobs
 // It is primarily intended for signature checking
@@ -131,6 +131,6 @@ private:
 
 using JobCounter = ClosureCounter<void>;
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/core/JobQueue.h

@@ -12,7 +12,7 @@
 
 #include <set>
 
-namespace xrpl {
+namespace ripple {
 
 namespace perf {
 class PerfLog;
@@ -382,11 +382,11 @@ private:
             lock is released which only happens after the coroutine completes.
 */
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #include <xrpl/core/Coro.ipp>
 
-namespace xrpl {
+namespace ripple {
 
 template <class F>
 std::shared_ptr<JobQueue::Coro>
@@ -408,6 +408,6 @@ JobQueue::postCoro(JobType t, std::string const& name, F&& f)
     return coro;
 }
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/core/JobTypeData.h

@@ -5,7 +5,7 @@
 #include <xrpl/beast/insight/Collector.h>
 #include <xrpl/core/JobTypeInfo.h>
 
-namespace xrpl {
+namespace ripple {
 
 struct JobTypeData
 {
@@ -83,6 +83,6 @@ public:
     }
 };
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/core/JobTypeInfo.h

@@ -3,7 +3,7 @@
 
 #include <xrpl/core/Job.h>
 
-namespace xrpl {
+namespace ripple {
 
 /** Holds all the 'static' information about a job, which does not change */
 class JobTypeInfo
@@ -78,6 +78,6 @@ public:
     }
 };
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/core/JobTypes.h

@@ -7,7 +7,7 @@
 #include <map>
 #include <string>
 
-namespace xrpl {
+namespace ripple {
 
 class JobTypes
 {
@@ -35,7 +35,7 @@ private:
                        std::chrono::milliseconds peakLatency) {
             XRPL_ASSERT(
                 m_map.find(jt) == m_map.end(),
-                "xrpl::JobTypes::JobTypes::add : unique job type input");
+                "ripple::JobTypes::JobTypes::add : unique job type input");
 
             [[maybe_unused]] auto const inserted =
                 m_map
@@ -48,7 +48,7 @@ private:
 
             XRPL_ASSERT(
                 inserted == true,
-                "xrpl::JobTypes::JobTypes::add : input is inserted");
+                "ripple::JobTypes::JobTypes::add : input is inserted");
         };
 
         // clang-format off
@@ -122,7 +122,7 @@ public:
     get(JobType jt) const
     {
         Map::const_iterator const iter(m_map.find(jt));
-        XRPL_ASSERT(iter != m_map.end(), "xrpl::JobTypes::get : valid input");
+        XRPL_ASSERT(iter != m_map.end(), "ripple::JobTypes::get : valid input");
 
         if (iter != m_map.end())
             return iter->second;
@@ -170,6 +170,6 @@ public:
     Map m_map;
 };
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/core/LoadEvent.h

@@ -4,7 +4,7 @@
 #include <chrono>
 #include <string>
 
-namespace xrpl {
+namespace ripple {
 
 class LoadMonitor;
 
@@ -65,6 +65,6 @@ private:
     std::chrono::steady_clock::duration timeRunning_;
 };
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/core/LoadMonitor.h

@@ -8,7 +8,7 @@
 #include <chrono>
 #include <mutex>
 
-namespace xrpl {
+namespace ripple {
 
 // Monitors load levels and response times
 
@@ -67,6 +67,6 @@ private:
     beast::Journal const j_;
 };
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/core/PerfLog.h

@@ -17,7 +17,7 @@ namespace beast {
 class Journal;
 }
 
-namespace xrpl {
+namespace ripple {
 class Application;
 namespace perf {
 
@@ -187,6 +187,6 @@ measureDurationAndLog(
 }
 
 }  // namespace perf
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif  // XRPL_CORE_PERFLOG_H

include/xrpl/core/detail/Workers.h

@@ -10,7 +10,7 @@
 #include <string>
 #include <thread>
 
-namespace xrpl {
+namespace ripple {
 
 namespace perf {
 class PerfLog;
@@ -214,6 +214,6 @@ private:
         m_paused;  // holds just paused workers
 };
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/core/detail/semaphore.h

@@ -1,6 +1,6 @@
 /**
  *
- * TODO: Remove xrpl::basic_semaphore (and this file) and use
+ * TODO: Remove ripple::basic_semaphore (and this file) and use
  * std::counting_semaphore.
  *
  * Background:
@@ -32,7 +32,7 @@
 #include <condition_variable>
 #include <mutex>
 
-namespace xrpl {
+namespace ripple {
 
 template <class Mutex, class CondVar>
 class basic_semaphore
@@ -87,6 +87,6 @@ public:
 
 using semaphore = basic_semaphore<std::mutex, std::condition_variable>;
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/crypto/RFC1751.h

@@ -4,7 +4,7 @@
 #include <string>
 #include <vector>
 
-namespace xrpl {
+namespace ripple {
 
 class RFC1751
 {
@@ -42,6 +42,6 @@ private:
     static char const* s_dictionary[];
 };
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/crypto/csprng.h

@@ -3,7 +3,7 @@
 
 #include <mutex>
 
-namespace xrpl {
+namespace ripple {
 
 /** A cryptographically secure random number engine
 
@@ -70,6 +70,6 @@ public:
 csprng_engine&
 crypto_prng();
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/crypto/secure_erase.h

@@ -3,7 +3,7 @@
 
 #include <cstddef>
 
-namespace xrpl {
+namespace ripple {
 
 /** Attempts to clear the given blob of memory.
 
@@ -22,6 +22,6 @@ namespace xrpl {
 void
 secure_erase(void* dest, std::size_t bytes);
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/json/JsonPropertyStream.h

@@ -4,7 +4,7 @@
 #include <xrpl/beast/utility/PropertyStream.h>
 #include <xrpl/json/json_value.h>
 
-namespace xrpl {
+namespace ripple {
 
 /** A PropertyStream::Sink which produces a Json::Value of type objectValue. */
 class JsonPropertyStream : public beast::PropertyStream
@@ -66,6 +66,6 @@ protected:
     add(std::string const& v) override;
 };
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/json/Object.h

@@ -0,0 +1,445 @@
+#ifndef XRPL_JSON_OBJECT_H_INCLUDED
+#define XRPL_JSON_OBJECT_H_INCLUDED
+
+#include <xrpl/json/Writer.h>
+
+#include <memory>
+
+namespace Json {
+
+/**
+    Collection is a base class for Array and Object, classes which provide the
+    facade of JSON collections for the O(1) JSON writer, while still using no
+    heap memory and only a very small amount of stack.
+
+    From http://json.org, JSON has two types of collection: array, and object.
+    Everything else is a *scalar* - a number, a string, a boolean, the special
+    value null, or a legacy Json::Value.
+
+    Collections must write JSON "as-it-goes" in order to get the strong
+    performance guarantees.  This puts restrictions upon API users:
+
+    1. Only one collection can be open for change at any one time.
+
+       This condition is enforced automatically and a std::logic_error thrown if
+   it is violated.
+
+    2. A tag may only be used once in an Object.
+
+       Some objects have many tags, so this condition might be a little
+       expensive. Enforcement of this condition is turned on in debug builds and
+       a std::logic_error is thrown when the tag is added for a second time.
+
+    Code samples:
+
+        Writer writer;
+
+        // An empty object.
+        {
+            Object::Root (writer);
+        }
+        // Outputs {}
+
+        // An object with one scalar value.
+        {
+            Object::Root root (writer);
+            write["hello"] = "world";
+        }
+        // Outputs {"hello":"world"}
+
+        // Same, using chaining.
+        {
+            Object::Root (writer)["hello"] = "world";
+        }
+        // Output is the same.
+
+        // Add several scalars, with chaining.
+        {
+            Object::Root (writer)
+                .set ("hello", "world")
+                .set ("flag", false)
+                .set ("x", 42);
+        }
+        // Outputs {"hello":"world","flag":false,"x":42}
+
+        // Add an array.
+        {
+            Object::Root root (writer);
+            {
+               auto array = root.setArray ("hands");
+               array.append ("left");
+               array.append ("right");
+            }
+        }
+        // Outputs {"hands":["left", "right"]}
+
+        // Same, using chaining.
+        {
+            Object::Root (writer)
+                .setArray ("hands")
+                .append ("left")
+                .append ("right");
+        }
+        // Output is the same.
+
+        // Add an object.
+        {
+            Object::Root root (writer);
+            {
+               auto object = root.setObject ("hands");
+               object["left"] = false;
+               object["right"] = true;
+            }
+        }
+        // Outputs {"hands":{"left":false,"right":true}}
+
+        // Same, using chaining.
+        {
+            Object::Root (writer)
+                .setObject ("hands")
+                .set ("left", false)
+                .set ("right", true);
+            }
+        }
+        // Outputs {"hands":{"left":false,"right":true}}
+
+
+   Typical ways to make mistakes and get a std::logic_error:
+
+        Writer writer;
+        Object::Root root (writer);
+
+        // Repeat a tag.
+        {
+            root ["hello"] = "world";
+            root ["hello"] = "there";  // THROWS! in a debug build.
+        }
+
+        // Open a subcollection, then set something else.
+        {
+            auto object = root.setObject ("foo");
+            root ["hello"] = "world";  // THROWS!
+        }
+
+        // Open two subcollections at a time.
+        {
+            auto object = root.setObject ("foo");
+            auto array = root.setArray ("bar");  // THROWS!!
+        }
+
+   For more examples, check the unit tests.
+ */
+
+class Collection
+{
+public:
+    Collection(Collection&& c) noexcept;
+    Collection&
+    operator=(Collection&& c) noexcept;
+    Collection() = delete;
+
+    ~Collection();
+
+protected:
+    // A null parent means "no parent at all".
+    // Writers cannot be null.
+    Collection(Collection* parent, Writer*);
+    void
+    checkWritable(std::string const& label);
+
+    Collection* parent_;
+    Writer* writer_;
+    bool enabled_;
+};
+
+class Array;
+
+//------------------------------------------------------------------------------
+
+/** Represents a JSON object being written to a Writer. */
+class Object : protected Collection
+{
+public:
+    /** Object::Root is the only Collection that has a public constructor. */
+    class Root;
+
+    /** Set a scalar value in the Object for a key.
+
+        A JSON scalar is a single value - a number, string, boolean, nullptr or
+        a Json::Value.
+
+        `set()` throws an exception if this object is disabled (which means that
+        one of its children is enabled).
+
+        In a debug build, `set()` also throws an exception if the key has
+        already been set() before.
+
+        An operator[] is provided to allow writing `object["key"] = scalar;`.
+     */
+    template <typename Scalar>
+    void
+    set(std::string const& key, Scalar const&);
+
+    void
+    set(std::string const& key, Json::Value const&);
+
+    // Detail class and method used to implement operator[].
+    class Proxy;
+
+    Proxy
+    operator[](std::string const& key);
+    Proxy
+    operator[](Json::StaticString const& key);
+
+    /** Make a new Object at a key and return it.
+
+        This Object is disabled until that sub-object is destroyed.
+        Throws an exception if this Object was already disabled.
+     */
+    Object
+    setObject(std::string const& key);
+
+    /** Make a new Array at a key and return it.
+
+        This Object is disabled until that sub-array is destroyed.
+        Throws an exception if this Object was already disabled.
+     */
+    Array
+    setArray(std::string const& key);
+
+protected:
+    friend class Array;
+    Object(Collection* parent, Writer* w) : Collection(parent, w)
+    {
+    }
+};
+
+class Object::Root : public Object
+{
+public:
+    /** Each Object::Root must be constructed with its own unique Writer. */
+    Root(Writer&);
+};
+
+//------------------------------------------------------------------------------
+
+/** Represents a JSON array being written to a Writer. */
+class Array : private Collection
+{
+public:
+    /** Append a scalar to the Arrary.
+
+        Throws an exception if this array is disabled (which means that one of
+        its sub-collections is enabled).
+    */
+    template <typename Scalar>
+    void
+    append(Scalar const&);
+
+    /**
+       Appends a Json::Value to an array.
+       Throws an exception if this Array was disabled.
+     */
+    void
+    append(Json::Value const&);
+
+    /** Append a new Object and return it.
+
+        This Array is disabled until that sub-object is destroyed.
+        Throws an exception if this Array was disabled.
+     */
+    Object
+    appendObject();
+
+    /** Append a new Array and return it.
+
+        This Array is disabled until that sub-array is destroyed.
+        Throws an exception if this Array was already disabled.
+     */
+    Array
+    appendArray();
+
+protected:
+    friend class Object;
+    Array(Collection* parent, Writer* w) : Collection(parent, w)
+    {
+    }
+};
+
+//------------------------------------------------------------------------------
+
+// Generic accessor functions to allow Json::Value and Collection to
+// interoperate.
+
+/** Add a new subarray at a named key in a Json object. */
+Json::Value&
+setArray(Json::Value&, Json::StaticString const& key);
+
+/** Add a new subarray at a named key in a Json object. */
+Array
+setArray(Object&, Json::StaticString const& key);
+
+/** Add a new subobject at a named key in a Json object. */
+Json::Value&
+addObject(Json::Value&, Json::StaticString const& key);
+
+/** Add a new subobject at a named key in a Json object. */
+Object
+addObject(Object&, Json::StaticString const& key);
+
+/** Append a new subarray to a Json array. */
+Json::Value&
+appendArray(Json::Value&);
+
+/** Append a new subarray to a Json array. */
+Array
+appendArray(Array&);
+
+/** Append a new subobject to a Json object. */
+Json::Value&
+appendObject(Json::Value&);
+
+/** Append a new subobject to a Json object. */
+Object
+appendObject(Array&);
+
+/** Copy all the keys and values from one object into another. */
+void
+copyFrom(Json::Value& to, Json::Value const& from);
+
+/** Copy all the keys and values from one object into another. */
+void
+copyFrom(Object& to, Json::Value const& from);
+
+/** An Object that contains its own Writer. */
+class WriterObject
+{
+public:
+    WriterObject(Output const& output)
+        : writer_(std::make_unique<Writer>(output))
+        , object_(std::make_unique<Object::Root>(*writer_))
+    {
+    }
+
+    WriterObject(WriterObject&& other) = default;
+
+    Object*
+    operator->()
+    {
+        return object_.get();
+    }
+
+    Object&
+    operator*()
+    {
+        return *object_;
+    }
+
+private:
+    std::unique_ptr<Writer> writer_;
+    std::unique_ptr<Object::Root> object_;
+};
+
+WriterObject
+stringWriterObject(std::string&);
+
+//------------------------------------------------------------------------------
+// Implementation details.
+
+// Detail class for Object::operator[].
+class Object::Proxy
+{
+private:
+    Object& object_;
+    std::string const key_;
+
+public:
+    Proxy(Object& object, std::string const& key);
+
+    template <class T>
+    void
+    operator=(T const& t)
+    {
+        object_.set(key_, t);
+        // Note: This function shouldn't return *this, because it's a trap.
+        //
+        // In Json::Value, foo[jss::key] returns a reference to a
+        // mutable Json::Value contained _inside_ foo.  But in the case of
+        // Json::Object, where we write once only, there isn't any such
+        // reference that can be returned.  Returning *this would return an
+        // object "a level higher" than in Json::Value, leading to obscure bugs,
+        // particularly in generic code.
+    }
+};
+
+//------------------------------------------------------------------------------
+
+template <typename Scalar>
+void
+Array::append(Scalar const& value)
+{
+    checkWritable("append");
+    if (writer_)
+        writer_->append(value);
+}
+
+template <typename Scalar>
+void
+Object::set(std::string const& key, Scalar const& value)
+{
+    checkWritable("set");
+    if (writer_)
+        writer_->set(key, value);
+}
+
+inline Json::Value&
+setArray(Json::Value& json, Json::StaticString const& key)
+{
+    return (json[key] = Json::arrayValue);
+}
+
+inline Array
+setArray(Object& json, Json::StaticString const& key)
+{
+    return json.setArray(std::string(key));
+}
+
+inline Json::Value&
+addObject(Json::Value& json, Json::StaticString const& key)
+{
+    return (json[key] = Json::objectValue);
+}
+
+inline Object
+addObject(Object& object, Json::StaticString const& key)
+{
+    return object.setObject(std::string(key));
+}
+
+inline Json::Value&
+appendArray(Json::Value& json)
+{
+    return json.append(Json::arrayValue);
+}
+
+inline Array
+appendArray(Array& json)
+{
+    return json.appendArray();
+}
+
+inline Json::Value&
+appendObject(Json::Value& json)
+{
+    return json.append(Json::objectValue);
+}
+
+inline Object
+appendObject(Array& json)
+{
+    return json.appendObject();
+}
+
+}  // namespace Json
+
+#endif

include/xrpl/json/Writer.h

@@ -234,7 +234,7 @@ inline void
 check(bool condition, std::string const& message)
 {
     if (!condition)
-        xrpl::Throw<std::logic_error>(message);
+        ripple::Throw<std::logic_error>(message);
 }
 
 }  // namespace Json

include/xrpl/json/detail/json_assert.h

@@ -6,6 +6,6 @@
 
 #define JSON_ASSERT_MESSAGE(condition, message) \
     if (!(condition))                           \
-        xrpl::Throw<Json::error>(message);
+        ripple::Throw<Json::error>(message);
 
 #endif

include/xrpl/json/json_value.h

@@ -199,7 +199,7 @@ public:
     Value(UInt value);
     Value(double value);
     Value(char const* value);
-    Value(xrpl::Number const& value);
+    Value(ripple::Number const& value);
     /** \brief Constructs a value from a static string.
 
      * Like other value string constructor but do not duplicate the string for
@@ -430,7 +430,7 @@ private:
 };
 
 inline Value
-to_json(xrpl::Number const& number)
+to_json(ripple::Number const& number)
 {
     return to_string(number);
 }

include/xrpl/ledger/ApplyView.h

@@ -6,7 +6,7 @@
 #include <xrpl/ledger/RawView.h>
 #include <xrpl/ledger/ReadView.h>
 
-namespace xrpl {
+namespace ripple {
 
 enum ApplyFlags : std::uint32_t {
     tapNONE = 0x00,
@@ -267,7 +267,7 @@ public:
         {
             // LCOV_EXCL_START
             UNREACHABLE(
-                "xrpl::ApplyView::dirAppend : only Offers are appended to "
+                "ripple::ApplyView::dirAppend : only Offers are appended to "
                 "book directories");
             // Only Offers are appended to book directories. Call dirInsert()
             // instead
@@ -407,6 +407,6 @@ insertPage(
     std::function<void(std::shared_ptr<SLE> const&)> const& describe);
 
 }  // namespace directory
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/ledger/ApplyViewImpl.h

@@ -6,7 +6,7 @@
 #include <xrpl/protocol/STAmount.h>
 #include <xrpl/protocol/TER.h>
 
-namespace xrpl {
+namespace ripple {
 
 /** Editable, discardable view that can build metadata for one tx.
 
@@ -55,18 +55,6 @@ public:
         deliver_ = amount;
     }
 
-    void
-    setGasUsed(std::optional<std::uint32_t> const gasUsed)
-    {
-        gasUsed_ = gasUsed;
-    }
-
-    void
-    setWasmReturnCode(std::int32_t const wasmReturnCode)
-    {
-        wasmReturnCode_ = wasmReturnCode;
-    }
-
     /** Get the number of modified entries
      */
     std::size_t
@@ -85,10 +73,8 @@ public:
 
 private:
     std::optional<STAmount> deliver_;
-    std::optional<std::uint32_t> gasUsed_;
-    std::optional<std::int32_t> wasmReturnCode_;
 };
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/ledger/BookDirs.h

@@ -4,7 +4,7 @@
 #include <xrpl/beast/utility/Journal.h>
 #include <xrpl/ledger/ReadView.h>
 
-namespace xrpl {
+namespace ripple {
 
 class BookDirs
 {
@@ -89,6 +89,6 @@ private:
     static beast::Journal j_;
 };
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/ledger/CachedSLEs.h

@@ -5,7 +5,7 @@
 #include <xrpl/basics/base_uint.h>
 #include <xrpl/protocol/STLedgerEntry.h>
 
-namespace xrpl {
+namespace ripple {
 using CachedSLEs = TaggedCache<uint256, SLE const>;
 }
 

include/xrpl/ledger/CachedView.h

@@ -8,7 +8,7 @@
 #include <mutex>
 #include <type_traits>
 
-namespace xrpl {
+namespace ripple {
 
 namespace detail {
 
@@ -164,6 +164,6 @@ public:
     }
 };
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/ledger/CredentialHelpers.h

@@ -11,7 +11,7 @@
 #include <xrpl/protocol/STTx.h>
 #include <xrpl/protocol/TER.h>
 
-namespace xrpl {
+namespace ripple {
 namespace credentials {
 
 // These function will be used by the code that use DepositPreauth / Credentials
@@ -93,6 +93,6 @@ verifyDepositPreauth(
     std::shared_ptr<SLE> const& sleDst,
     beast::Journal j);
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/ledger/Dir.h

@@ -4,7 +4,7 @@
 #include <xrpl/ledger/ReadView.h>
 #include <xrpl/protocol/Indexes.h>
 
-namespace xrpl {
+namespace ripple {
 
 /** A class that simplifies iterating ledger directory pages
 
@@ -108,6 +108,6 @@ private:
     std::vector<uint256>::const_iterator it_;
 };
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/ledger/OpenView.h

@@ -13,7 +13,7 @@
 #include <functional>
 #include <utility>
 
-namespace xrpl {
+namespace ripple {
 
 /** Open ledger construction tag.
 
@@ -252,6 +252,6 @@ public:
         std::shared_ptr<Serializer const> const& metaData) override;
 };
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/ledger/OpenViewSandbox.h

@@ -1,105 +0,0 @@
-//------------------------------------------------------------------------------
-/*
-    This file is part of rippled: https://github.com/ripple/rippled
-    Copyright (c) 2025 Ripple Labs Inc.
-
-    Permission to use, copy, modify, and/or distribute this software for any
-    purpose  with  or without fee is hereby granted, provided that the above
-    copyright notice and this permission notice appear in all copies.
-
-    THE  SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
-    WITH  REGARD  TO  THIS  SOFTWARE  INCLUDING  ALL  IMPLIED  WARRANTIES  OF
-    MERCHANTABILITY  AND  FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
-    ANY  SPECIAL ,  DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
-    WHATSOEVER  RESULTING  FROM  LOSS  OF USE, DATA OR PROFITS, WHETHER IN AN
-    ACTION  OF  CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
-    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-*/
-//==============================================================================
-
-#ifndef RIPPLE_LEDGER_OPENVIEWSANDBOX_H_INCLUDED
-#define RIPPLE_LEDGER_OPENVIEWSANDBOX_H_INCLUDED
-
-#include <xrpl/ledger/OpenView.h>
-
-#include <memory>
-
-namespace xrpl {
-
-class OpenViewSandbox
-{
-private:
-    OpenView& parent_;
-    std::unique_ptr<OpenView> sandbox_;
-
-public:
-    using key_type = ReadView::key_type;
-
-    OpenViewSandbox(OpenView& parent)
-        : parent_(parent)
-        , sandbox_(std::make_unique<OpenView>(batch_view, parent))
-    {
-    }
-
-    void
-    rawErase(std::shared_ptr<SLE> const& sle)
-    {
-        sandbox_->rawErase(sle);
-    }
-
-    void
-    rawInsert(std::shared_ptr<SLE> const& sle)
-    {
-        sandbox_->rawInsert(sle);
-    }
-
-    void
-    rawReplace(std::shared_ptr<SLE> const& sle)
-    {
-        sandbox_->rawReplace(sle);
-    }
-
-    void
-    rawDestroyXRP(XRPAmount const& fee)
-    {
-        sandbox_->rawDestroyXRP(fee);
-    }
-
-    void
-    rawTxInsert(
-        key_type const& key,
-        std::shared_ptr<Serializer const> const& txn,
-        std::shared_ptr<Serializer const> const& metaData)
-    {
-        sandbox_->rawTxInsert(key, txn, metaData);
-    }
-
-    void
-    commit()
-    {
-        sandbox_->apply(parent_);
-        sandbox_ = std::make_unique<OpenView>(batch_view, parent_);
-    }
-
-    void
-    discard()
-    {
-        sandbox_ = std::make_unique<OpenView>(batch_view, parent_);
-    }
-
-    OpenView const&
-    view() const
-    {
-        return *sandbox_;
-    }
-
-    OpenView&
-    view()
-    {
-        return *sandbox_;
-    }
-};
-
-}  // namespace xrpl
-
-#endif

include/xrpl/ledger/PaymentSandbox.h

@@ -8,7 +8,7 @@
 
 #include <map>
 
-namespace xrpl {
+namespace ripple {
 
 namespace detail {
 
@@ -188,6 +188,6 @@ private:
     PaymentSandbox const* ps_ = nullptr;
 };
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/ledger/RawView.h

@@ -5,7 +5,7 @@
 #include <xrpl/protocol/STLedgerEntry.h>
 #include <xrpl/protocol/Serializer.h>
 
-namespace xrpl {
+namespace ripple {
 
 /** Interface for ledger entry changes.
 
@@ -87,6 +87,6 @@ public:
         std::shared_ptr<Serializer const> const& metaData) = 0;
 };
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/ledger/ReadView.h

@@ -18,7 +18,7 @@
 #include <optional>
 #include <unordered_set>
 
-namespace xrpl {
+namespace ripple {
 
 //------------------------------------------------------------------------------
 
@@ -258,7 +258,7 @@ makeRulesGivenLedger(
     DigestAwareReadView const& ledger,
     std::unordered_set<uint256, beast::uhash<>> const& presets);
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #include <xrpl/ledger/detail/ReadViewFwdRange.ipp>
 

include/xrpl/ledger/Sandbox.h

@@ -4,7 +4,7 @@
 #include <xrpl/ledger/RawView.h>
 #include <xrpl/ledger/detail/ApplyViewBase.h>
 
-namespace xrpl {
+namespace ripple {
 
 /** Discardable, editable view to a ledger.
 
@@ -39,6 +39,6 @@ public:
     }
 };
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif

include/xrpl/ledger/View.h

@@ -20,7 +20,7 @@
 #include <map>
 #include <utility>
 
-namespace xrpl {
+namespace ripple {
 
 enum class WaiveTransferFee : bool { No = false, Yes };
 enum class SkipEntry : bool { No = false, Yes };
@@ -1083,41 +1083,6 @@ enforceMPTokenAuthorization(
     XRPAmount const& priorBalance,
     beast::Journal j);
 
-enum class SendIssuerHandling {
-    ihSENDER_NOT_ALLOWED,
-    ihRECEIVER_NOT_ALLOWED,
-    ihIGNORE
-};
-enum class SendEscrowHandling { ehIGNORE, ehCHECK };
-enum class SendAuthHandling {
-    ahCHECK_SENDER,
-    ahCHECK_RECEIVER,
-    ahBOTH,
-    ahNEITHER
-};
-enum class SendFreezeHandling {
-    fhCHECK_SENDER,
-    fhCHECK_RECEIVER,
-    fhBOTH,
-    fhNEITHER
-};
-enum class SendTransferHandling { thIGNORE, thCHECK };
-enum class SendBalanceHandling { bhIGNORE, bhCHECK };
-
-TER
-canTransferFT(
-    ReadView const& view,
-    AccountID const& sender,
-    AccountID const& receiver,
-    STAmount const& amount,
-    beast::Journal j,
-    SendIssuerHandling issuerHandling,
-    SendEscrowHandling escrowHandling,
-    SendAuthHandling authHandling,
-    SendFreezeHandling freezeHandling,
-    SendTransferHandling transferHandling,
-    SendBalanceHandling balanceHandling);
-
 /** Check if the destination account is allowed
  *  to receive MPT. Return tecNO_AUTH if it doesn't
  *  and tesSUCCESS otherwise.
@@ -1232,6 +1197,6 @@ sharesToAssetsWithdraw(
 bool
 after(NetClock::time_point now, std::uint32_t mark);
 
-}  // namespace xrpl
+}  // namespace ripple
 
 #endif