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Release Notes#

This document provides a summary of new features, improvements, and bug fixes in each version of Jac and Jaseci. For details on changes that might require updates to your existing code, please refer to the Breaking Changes page.

jaclang 0.8.5 / jac-cloud 0.2.5 / mtllm 0.4.0 (Unreleased)#

  • Removed LLM Override: function_call() by llm() has been removed as it was introduce ambiguity in the grammer with LALR(1) shift/reduce error. This feature will be reintroduced in a future release with a different syntax.

jaclang 0.8.4 / jac-cloud 0.2.4 / mtllm 0.3.9#

  • Support Spawning a Walker with List of Nodes and Edges: Introduced the ability to spawn a walker on a list of nodes and edges. This feature enables initiating traversal across multiple graph elements simultaneously, providing greater flexibility and efficiency in handling complex graph structures.
  • _.save(...) should not override root in runtime: The previous version bypassed access validation because the target archetype root was overridden by the current root, simulating ownership of the archetype.
  • Support Custom Access Validation: Introduced the ability to override access validation. Node/Edge can override __jac_access__ reserved function (builtin) to have a different way of validating access. Either you cross-check it by current attribute, check from db or global vars or by just returning specific access level. PR#1524
  • Get all Root Builtin Method: Introduced allroots builtin method to get all the roots available in the memory. Developers can get all the roots in the memory/ database by calling allroots() method.
  • Permission Update Builtin Methods: Introduced grant, revoke builtin methods, NoPerm, ReadPerm, ConnectPerm, WritePerm builtin enums, to give the permission to a node or revoke the permission. Developers can use them by calling grant(node_1, ConnectPerm) or revoke(node_1) method.

  • jac create_system_admin cli now support local db: DATABASE_HOST are now not required when creating system admin.

  • Bug fix on supporting while loop with else part: Now we are supporting while loop with else part.

jaclang 0.8.3 / jac-cloud 0.2.3 / mtllm 0.3.8#

  • Semantic Strings: Introduced sem strings to attach natural language descriptions to code elements like functions, classes, and parameters. These semantic annotations can be used by Large Language Models (LLMs) to enable intelligent, AI-powered code generation and execution. (mtllm)
  • LLM Function Overriding: Introduced the ability to override any regular function with an LLM-powered implementation at runtime using the function_call() by llm() syntax. This allows for dynamic, on-the-fly replacement of function behavior with generative models. (mtllm)
  • JacMachine Interface Reorganization: The machine and interface have been refactored to maintain a shared global state—similar to Python's sys.modules—removing the need to explicitly pass execution context and dramatically improving performance.
  • Async Walker Support: Introduced comprehensive async walker functionality that brings Python's async/await paradigm to object-spatial programming. Async walkers enable non-blocking spawns during graph traversal, allowing for concurrent execution of multiple walkers and efficient handling of I/O-bound operations.
  • Native Jac Imports: Native import statements can now be used to import Jac modules seamlessly into python code, eliminating the need to use _.jac_import().
  • Unicode String Literal Support: Fixed unicode character handling in string literals. Unicode characters like "✓", "○", emojis, and other international characters are now properly preserved during compilation instead of being corrupted into byte sequences.
  • Removed Ignore Statements: The ignore keyword and ignore statements have been removed as this functionality can be achieved more elegantly by modifying path collection expressions directly in visit statements.

jaclang 0.8.1 / jac-cloud 0.2.1 / mtllm 0.3.6#

  • Function Renaming: The dotgen built-in function has been renamed to printgraph. This change aims to make the function's purpose clearer, as printgraph more accurately reflects its action of outputting graph data. It can output in DOT format and also supports JSON output via the as_json=True parameter. Future enhancements may include support for other formats like Mermaid.
  • Queue Insertion Index for Visit Statements: Visit statements now support queue insertion indices (e.g., visit:0: [-->] for depth-first, visit:-1: [-->] for breadth-first) that control where new destinations are inserted in the walker's traversal queue. Any positive or negative index can be used, enabling fine-grained control over traversal patterns and supporting complex graph algorithms beyond simple depth-first or breadth-first strategies.
  • Edge Ability Execution Semantics: Enhanced edge traversal behavior with explicit edge references. By default, [-->] returns connected nodes, while [edge -->] returns edge objects. When walkers visit edges explicitly using visit [edge -->], abilities are executed on both the edge and its connected node. Additionally, spawning a walker on an edge automatically queues both the edge and its target node for processing, ensuring complete traversal of the topological structure.
  • Jac Imports Execution: Jac imports (Jac.jac_import) now run in a Python-like interpreter mode by default. Full compilation with dependency inclusion can only occur when explicitly calling compile from the JacProgram object.
  • Concurrent Execution with flow and wait: Introduced flow and wait keywords for concurrent expressions. flow initiates parallel execution of expressions, and wait synchronizes these parallel operations. This enables efficient parallel processing and asynchronous operations directly within Jac with separate (and better) semantics than python's async/await.

Version 0.8.0#

  • impl Keyword for Implementation: Introduced the impl keyword for a simpler, more explicit way to implement abilities and methods for objects, nodes, edges, and other types, replacing the previous colon-based syntax.
  • Updated Inheritance Syntax: Changed the syntax for specifying inheritance from colons to parentheses (e.g., obj Car(Vehicle)) for better alignment with common object-oriented programming languages.
  • def Keyword for Functions: The def keyword is now used for traditional Python-like functions and methods, while can is reserved for object-spatial abilities.
  • visitor Keyword: Introduced the visitor keyword to reference the walker context within nodes/edges, replacing the ambiguous use of here in such contexts. here is now used only in walker abilities to reference the current node/edge.
  • Lambda Syntax Update: The lambda syntax has been updated from with x: int can x; to lambda x: int: x * x;, aligning it more closely with Python's lambda syntax.
  • Object-Spatial Arrow Notation Update: Typed arrow notations -:MyEdge:-> and +:MyEdge:+> are now ->:MyEdge:-> and +>:MyEdge:+> respectively, to avoid conflicts with Python-style list slicing.
  • Import from Syntax Update: The syntax for importing specific modules from a package now uses curly braces (e.g., import from utils { helper, math_utils }) for improved clarity.
  • Auto-Resolved Imports: Removed the need for explicit language annotations (:py, :jac) in import statements; the compiler now automatically resolves imports.
  • Permission API Renaming: The Jac.restrict and Jac.unrestrict interfaces have been renamed to Jac.perm_revoke and Jac.perm_grant respectively, for better clarity on their actions.