[api] Support sequence expression parsing #1786

[michaelvlach]

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Project	Deployment	Actions	Updated (UTC)
agdb	Ready	Preview, Comment	May 1, 2026 2:59pm

[Copilot]

Pull request overview

Adds support for parsing Rust range (.. / ..=) expressions into AgDB’s type definition reflection AST so functions annotated with #[agdb::fn_def] can represent ranges in their captured expression bodies.

Changes:

• Extend agdb_derive expression parsing to handle syn::Expr::Range and emit Expression::Range.
• Add Expression::Range { start, end, inclusive } to the public Expression enum in agdb.
• Add unit tests validating several range forms are reflected correctly.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
agdb_derive/src/type_def_parser/expression_parser.rs	Parses syn::ExprRange and emits a new Expression::Range node with optional bounds and inclusivity.
agdb/src/type_def/expression_def.rs	Adds the new Expression::Range variant and tests for range reflection output.

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