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ceibo

v0.0.26

Red-green syntax trees for incremental parsers

Repository Open docs Open in playground
Install
riot add ceibo
riot.toml
ceibo = "0.0.26"
Last release
Apr 28, 2026
License
Apache-2.0
Dependencies
1
Dependents
0
Installs
47
Published versions
17
Owner
@leostera@leostera
README Expand

ceibo

Generic red-green syntax trees for lossless and incremental parsers.

ceibo is the syntax-tree substrate behind Riot's parsing tools. It gives you the same general shape used in systems like Roslyn and rust-analyzer: immutable, shareable green trees plus a lazily materialized red layer for position-aware traversal.

When to use it

Use ceibo when you are building parser tooling and you need at least one of these properties:

  • lossless trees that preserve every byte of source input;
  • incremental re-use of unchanged subtrees across edits;
  • cheap position-aware traversal over immutable syntax;
  • a generic tree model that is not tied to one grammar.

If you want a ready-made OCaml parser, start with syn. ceibo is the layer below that.

Install

riot add ceibo

What you get

  • green tree builders and node/token representations;
  • red tree traversal with offsets and parent links;
  • spans and source-range helpers for syntax tooling;
  • a generic model you can adapt to many grammars, not just OCaml.

Where to start

  • src/README.md contains the deeper architecture write-up.
  • src/green.mli and src/red.mli explain the two layers directly.
  • syn is the best real package to study if you want to see ceibo used in a larger parser.
Installs
Downloads over the last 30 days, stacked by release.
Total installs
47
Downloads over the last 30 days
v0.0.261
v0.0.251
v0.0.241
v0.0.232
v0.0.220
Package status
Submission, indexing, and post-publish processing milestones for this release.
Submitted
Apr 28, 10:21 PM
Indexed
Apr 28, 10:21 PM
Searchable
Apr 28, 10:21 PM
Docs ready
Pending
Completed
Pending
Dependencies
Dependencies declared for this release.
Show 1 dependencies Expand
Dependents
Packages that currently depend on ceibo.
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No indexed dependents yet.

Recent activity
Latest publication, indexing, and post-publish pipeline events recorded for this package.
Open full activity
Show 12 recent events Expand
  • Blocked
    ceibo 0.0.26 attempt 3 · artifact 9cba2dfc2f52
    Details
    When
    Apr 28, 2026, 10:47:30 PM
    Event
    Blocked
    Package
    ceibo
    Version
    0.0.26
    Facts
    attempt 3 artifact 9cba2dfc2f52
    Payload
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  • Docs failed
    ceibo 0.0.26 docs · exit 1 · 2 json · doc.package_generation_failed · artifact 9cba2dfc2f52
    Details
    When
    Apr 28, 2026, 10:47:28 PM
    Event
    Docs failed
    Package
    ceibo
    Version
    0.0.26
    Summary
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    Facts
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  • Build failed
    ceibo 0.0.26 build · exit 1 · artifact 9cba2dfc2f52
    Details
    When
    Apr 28, 2026, 10:47:27 PM
    Event
    Build failed
    Package
    ceibo
    Version
    0.0.26
    Summary
    error: Unknown argument: ceibo
    Facts
    build exit 1 artifact 9cba2dfc2f52
    Artifacts
    Result key
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  • Processing
    ceibo 0.0.26 attempt 3 · artifact 9cba2dfc2f52
    Details
    When
    Apr 28, 2026, 10:47:18 PM
    Event
    Processing
    Package
    ceibo
    Version
    0.0.26
    Facts
    attempt 3 artifact 9cba2dfc2f52
    Payload
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  • Requeued
    ceibo 0.0.26 attempt 2 · artifact 9cba2dfc2f52
    Details
    When
    Apr 28, 2026, 10:37:09 PM
    Event
    Requeued
    Package
    ceibo
    Version
    0.0.26
    Facts
    attempt 2 artifact 9cba2dfc2f52
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  • Docs failed
    ceibo 0.0.26 docs · exit 1 · 2 json · doc.package_generation_failed · artifact 9cba2dfc2f52
    Details
    When
    Apr 28, 2026, 10:37:07 PM
    Event
    Docs failed
    Package
    ceibo
    Version
    0.0.26
    Summary
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    Facts
    docs exit 1 2 json doc.package_generation_failed artifact 9cba2dfc2f52
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  • Build failed
    ceibo 0.0.26 build · exit 1 · artifact 9cba2dfc2f52
    Details
    When
    Apr 28, 2026, 10:37:06 PM
    Event
    Build failed
    Package
    ceibo
    Version
    0.0.26
    Summary
    error: Unknown argument: ceibo
    Facts
    build exit 1 artifact 9cba2dfc2f52
    Artifacts
    Result key
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  • Processing
    ceibo 0.0.26 attempt 2 · artifact 9cba2dfc2f52
    Details
    When
    Apr 28, 2026, 10:36:56 PM
    Event
    Processing
    Package
    ceibo
    Version
    0.0.26
    Facts
    attempt 2 artifact 9cba2dfc2f52
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  • Requeued
    ceibo 0.0.26 attempt 1 · artifact 9cba2dfc2f52
    Details
    When
    Apr 28, 2026, 10:25:59 PM
    Event
    Requeued
    Package
    ceibo
    Version
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    Facts
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  • Docs failed
    ceibo 0.0.26 docs · exit 1 · 2 json · doc.package_generation_failed · artifact 9cba2dfc2f52
    Details
    When
    Apr 28, 2026, 10:25:58 PM
    Event
    Docs failed
    Package
    ceibo
    Version
    0.0.26
    Summary
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    "success": true,
    "exit_code": 0,
    "stdout": "glibc=glibc 2.39\nriot=riot 0.0.26 (build 5948552e3334)\nPRETTY_NAME=\"Ubuntu 24.04.4 LTS\"\nNAME=\"Ubuntu\"\nVERSION_ID=\"24.04\"\nVERSION=\"24.04.4 LTS (Noble Numbat)\"\nVERSION_CODENAME=noble\nID=ubuntu\nID_LIKE=debian\nHOME_URL=\"https://www.ubuntu.com/\"\nSUPPORT_URL=\"https://help.ubuntu.com/\"\nBUG_REPORT_URL=\"https://bugs.launchpad.net/ubuntu/\"\nPRIVACY_POLICY_URL=\"https://www.ubuntu.com/legal/terms-and-policies/privacy-policy\"\nUBUNTU_CODENAME=noble\nLOGO=ubuntu-logo",
    "stderr": "",
    "duration_ms": 44,
    "command": [
      "sh",
      "-lc",
      "printf 'glibc=%s\\n' \"$(getconf GNU_LIBC_VERSION 2>/dev/null || echo unknown)\" && printf 'riot=%s\\n' \"$(/root/.riot/bin/riot version 2>/dev/null || echo unavailable)\" && cat /etc/os-release"
    ],
    "json_events": [],
    "non_json_stdout_lines": [
      "glibc=glibc 2.39",
      "riot=riot 0.0.26 (build 5948552e3334)",
      "PRETTY_NAME=\"Ubuntu 24.04.4 LTS\"",
      "NAME=\"Ubuntu\"",
      "VERSION_ID=\"24.04\"",
      "VERSION=\"24.04.4 LTS (Noble Numbat)\"",
      "VERSION_CODENAME=noble",
      "ID=ubuntu",
      "ID_LIKE=debian",
      "HOME_URL=\"https://www.ubuntu.com/\"",
      "SUPPORT_URL=\"https://help.ubuntu.com/\"",
      "BUG_REPORT_URL=\"https://bugs.launchpad.net/ubuntu/\"",
      "PRIVACY_POLICY_URL=\"https://www.ubuntu.com/legal/terms-and-policies/privacy-policy\"",
      "UBUNTU_CODENAME=noble",
      "LOGO=ubuntu-logo"
    ]
  },
  "exit_code": 1,
  "json_event_count": 2,
  "non_json_stdout_count": 0,
  "last_json_event_type": "doc.package_generation_failed",
  "last_json_event": {
    "type": "doc.package_generation_failed",
    "package": "ceibo",
    "version": "0.0.26",
    "output_dir": "/workspace/_build/doc/ceibo/0.0.26",
    "error": "Package 'ceibo' source '/workspace/packages/ceibo/src/ceibo.mli' depends on module 'Data', but that module is not provided by this package or one of its direct dependencies. Allowed package modules: Ceibo, Std."
  },
  "failure_summary": "{\"type\":\"doc.package_generation_failed\",\"package\":\"ceibo\",\"version\":\"0.0.26\",\"output_dir\":\"/workspace/_build/doc/ceibo/0.0.26\",\"error\":\"Package 'ceibo' source '/workspace/packages/ceibo/src/ceibo.mli' depends on module 'Data', but that mod…",
  "stdout_excerpt": "{\"type\":\"doc.package_generation_started\",\"package\":\"ceibo\",\"version\":\"0.0.26\",\"output_dir\":\"/workspace/_build/doc/ceibo/0.0.26\"}\n{\"type\":\"doc.package_generation_failed\",\"package\":\"ceibo\",\"version\":\"0.0.26\",\"output_dir\":\"/workspace/_build/doc/ceibo/0.0.26\",\"error\":\"Package 'ceibo' source '/workspace/packages/ceibo/src/ceibo.mli' depends on module 'Data', but that module is not provided by this package or one of its direct dependencies. Allowed package modules: Ceibo, Std.\"}"
}
  • Build failed
    ceibo 0.0.26 build · exit 1 · artifact 9cba2dfc2f52
    Details
    When
    Apr 28, 2026, 10:25:56 PM
    Event
    Build failed
    Package
    ceibo
    Version
    0.0.26
    Summary
    error: Unknown argument: ceibo
    Facts
    build exit 1 artifact 9cba2dfc2f52
    Artifacts
    Result key
    pipelines/builds/ceibo/0.0.26/9cba2dfc2f52e8a6146260c05f0b575dd099788fe2670ceb8ac6f61e97f7f192/result.json
    Logs key
    pipelines/builds/ceibo/0.0.26/9cba2dfc2f52e8a6146260c05f0b575dd099788fe2670ceb8ac6f61e97f7f192/build.log
    Payload
    {
  "artifact_sha256": "9cba2dfc2f52e8a6146260c05f0b575dd099788fe2670ceb8ac6f61e97f7f192",
  "run_kind": "build",
  "result_key": "pipelines/builds/ceibo/0.0.26/9cba2dfc2f52e8a6146260c05f0b575dd099788fe2670ceb8ac6f61e97f7f192/result.json",
  "logs_key": "pipelines/builds/ceibo/0.0.26/9cba2dfc2f52e8a6146260c05f0b575dd099788fe2670ceb8ac6f61e97f7f192/build.log",
  "environment_probe": {
    "success": true,
    "exit_code": 0,
    "stdout": "glibc=glibc 2.39\nriot=riot 0.0.26 (build 5948552e3334)\nPRETTY_NAME=\"Ubuntu 24.04.4 LTS\"\nNAME=\"Ubuntu\"\nVERSION_ID=\"24.04\"\nVERSION=\"24.04.4 LTS (Noble Numbat)\"\nVERSION_CODENAME=noble\nID=ubuntu\nID_LIKE=debian\nHOME_URL=\"https://www.ubuntu.com/\"\nSUPPORT_URL=\"https://help.ubuntu.com/\"\nBUG_REPORT_URL=\"https://bugs.launchpad.net/ubuntu/\"\nPRIVACY_POLICY_URL=\"https://www.ubuntu.com/legal/terms-and-policies/privacy-policy\"\nUBUNTU_CODENAME=noble\nLOGO=ubuntu-logo",
    "stderr": "",
    "duration_ms": 44,
    "command": [
      "sh",
      "-lc",
      "printf 'glibc=%s\\n' \"$(getconf GNU_LIBC_VERSION 2>/dev/null || echo unknown)\" && printf 'riot=%s\\n' \"$(/root/.riot/bin/riot version 2>/dev/null || echo unavailable)\" && cat /etc/os-release"
    ],
    "json_events": [],
    "non_json_stdout_lines": [
      "glibc=glibc 2.39",
      "riot=riot 0.0.26 (build 5948552e3334)",
      "PRETTY_NAME=\"Ubuntu 24.04.4 LTS\"",
      "NAME=\"Ubuntu\"",
      "VERSION_ID=\"24.04\"",
      "VERSION=\"24.04.4 LTS (Noble Numbat)\"",
      "VERSION_CODENAME=noble",
      "ID=ubuntu",
      "ID_LIKE=debian",
      "HOME_URL=\"https://www.ubuntu.com/\"",
      "SUPPORT_URL=\"https://help.ubuntu.com/\"",
      "BUG_REPORT_URL=\"https://bugs.launchpad.net/ubuntu/\"",
      "PRIVACY_POLICY_URL=\"https://www.ubuntu.com/legal/terms-and-policies/privacy-policy\"",
      "UBUNTU_CODENAME=noble",
      "LOGO=ubuntu-logo"
    ]
  },
  "exit_code": 1,
  "json_event_count": 0,
  "non_json_stdout_count": 1,
  "failure_summary": "error: Unknown argument: ceibo",
  "stdout_excerpt": "error: Unknown argument: ceibo"
}
  • Processing
    ceibo 0.0.26 attempt 1 · artifact 9cba2dfc2f52
    Details
    When
    Apr 28, 2026, 10:25:47 PM
    Event
    Processing
    Package
    ceibo
    Version
    0.0.26
    Facts
    attempt 1 artifact 9cba2dfc2f52
    Payload
    {
  "artifact_sha256": "9cba2dfc2f52e8a6146260c05f0b575dd099788fe2670ceb8ac6f61e97f7f192",
  "status": "processing",
  "attempt_count": 1
}