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base repository: expr-lang/expr
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head repository: SimFG/expr
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  • 8 commits
  • 13 files changed
  • 3 contributors

Commits on Dec 26, 2024

  1. Support the private field and auto change the struct to the point whe… 

    …n exec the method
    @SimFG
    SimFG committed Dec 26, 2024
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  2. rebase the origin master branch

    @SimFG
    SimFG committed Dec 26, 2024
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  3. add the view method

    @SimFG
    SimFG committed Dec 26, 2024
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  4. add mapValue function to get the map value

    @SimFG
    SimFG committed Dec 26, 2024
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  5. support automatic conversion of variable types

    @SimFG
    SimFG committed Dec 26, 2024
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  6. support to call the point method for the struct

    @SimFG
    SimFG committed Dec 26, 2024
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  7. fix parameter type conversion fails when calling method 

    Signed-off-by: SimFG <bang.fu@zilliz.com>
    @SimFG
    SimFG committed Dec 26, 2024
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Commits on May 13, 2025

  1. feat: add node budget and memory limits (#762) 

    * feat: add node budget and memory limits

Implement compile-time and runtime safeguards against deeply nested expressions:

- Add MaxNodes limit to track and limit AST node count during parsing
- Move MemoryBudget from VM to Config for better configurability
- Add node creation tracking in parser to enforce node budget
- Refactor node creation to check limits before allocation
- Add RunWithConfig to VM for passing memory budget settings
- Set reasonable defaults in Config (10000 nodes, 1M memory)
- Add comprehensive tests for both node and memory limits

This prevents stack overflows from malicious or poorly written expressions
by failing fast with clear error messages during compilation or runtime.

Signed-off-by: Ville Vesilehto <ville@vesilehto.fi>

* Update parser.go

Signed-off-by: Anton Medvedev <anton@medv.io>

---------

Signed-off-by: Ville Vesilehto <ville@vesilehto.fi>
Signed-off-by: Anton Medvedev <anton@medv.io>
Co-authored-by: Anton Medvedev <anton@medv.io>
    @thevilledev @antonmedv @SimFG
    2 people authored and SimFG committed May 13, 2025
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