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Sprig v0.1.0-alpha.1

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@github-actions github-actions released this 24 Sep 20:29
· 185 commits to main since this release
v0.1.0-alpha.1
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Sprig v0.1.0-alpha.1

Published 2026-09-24 as a GitHub prerelease:
https://github.com/ColinHouse/Sprig/releases/tag/v0.1.0-alpha.1

The first public alpha of the Sprig Java stage-0 compiler. Sprig source is
parsed and checked, lowered to Java source, compiled with javac, and run on
the JVM. The language design remains Sprig v0.7.

Download

Asset Notes
sprig-v0.1.0-alpha.1-jdk.zip Compiler/runtime, ANTLR 4.13.2, launcher, Hello World, license and notices. No JDK included.
sprig-v0.1.0-alpha.1-jdk.zip.sha256 SHA-256 checksum of the archive.

Verified checksum of the published archive:

fccc87e0d92c864672824d42035cbc9b1486da430166f744325db6b8def436db  sprig-v0.1.0-alpha.1-jdk.zip

The archive was downloaded from the release again and smoke-tested
(bin/sprig version, check, run); its BUILD_INFO.txt records source
revision 6e7b57e. Extract it and run bin/sprig run examples/hello.spr with
JDK 17 or newer on PATH.

Included and exercised

  • Indentation-based syntax, typed functions, local inference, classes, enums,
    sealed variants, and exhaustive match statements.
  • let/var, nullable types and flow narrowing, typed error handling,
    modules, and separate immutable/mutable collections.
  • Checked fixed-width integer operations, explicit numeric conversions,
    BigInt, Decimal, IEEE Float/Float32, and static diagnostics for
    ambiguous numeric operations.
  • A command line for check, build, run, diagnostic explanations, and
    JSON diagnostics.
  • Regression coverage for parser recovery, zero-argument lambdas, contextual
    Int32 compound assignments, and nullable values passed to Java references.
  • A VitePress documentation site built in the same repository.

Runtime and build requirements

The source is compiled with javac --release 17 and verified end-to-end on
OpenJDK 17.0.19 and 26.0.1 (macOS Apple Silicon); hosted CI covers Linux for
both JDKs. The supported runtime is JDK 17 or newer. The source archive
contains the compiler/runtime, ANTLR 4.13.2 and its license notices; it does
not contain a JDK.

Known limits

This is an alpha compiler, not a production stability or numerical correctness
claim. It is not self-hosted and has no package manager, language server, IDE
plugin, complete standard library, or unrestricted Java interop. See
docs/KNOWN_LIMITATIONS.md and docs/NUMERIC_SEMANTICS.md.

Report reproducible problems through the repository issue tracker with the
Sprig version, JDK/platform, minimal source, exact command, and diagnostics.

Assets 4
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