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CHANGELOG.md

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Changelog

0.2.0 [2022-02-09]

  • (#122) Added provision to provide initialisation values in snapshot of data elements for syntax tree generation.
  • (#119) Added function to specification snapshot.
  • (#121) Removed custom type reliance for syntax element name (TElementName).
  • (#120) Updated package dependencies.
  • (#118) Added validations in specification functions for registering and unregistering syntax elements.

0.1.0 [2022-01-26]

  • Added 3 categories of components: Syntax Representation, Execution Engine, Library

    • Syntax Representation

      • Added Element API: represents syntax elements -- the atomic constructs for building programs. There are 2 kinds of syntax elements:

        • Arguments which return values. These are of 2 types:
          • Data which return a value inherently and without operating on other provided values
          • Expression which return a value after operating on other provided values
        • Instructions which perform a task. These are of 2 types:
          • Statements perform a single task
          • Blocks encapsulate statements and generally set some states or control the flow to them

      • Added Specification component: maintains a table of concrete syntax elements which can be used to build programs.

      • Added Warehouse component: maintains a table of instances of syntax elements registered in the specification. It can also generate statistics about the instances.

      • Added Syntax Tree component: represents the abstract syntax tree or AST by maintaining interconnections between syntax elements.

    • Execution Engine

      • Added Symbol Table component: maintains tables of dynamic global variables and states which the syntax elements can use during execution.

      • Added Parser component: parses the syntax tree in a postorder sequence, and maintains call frame stacks and the program counter.

      • Added Interpreter component: fetches elements from the parser and executes them.

      • There are 2 special constructs: Process and Routine. These are special block elements. Routines encapsulate instructions that can be executed by multiple processes. Processes encapsulate independent set of instructions, and multiple processes can run concurrently.

      • There is an additional terminology called crumbs which are sets of connected syntax elements not part of any process or routine.

    • Library

      • Added basic Concrete Syntax Elements
        • Values
          • Represent stored values
          • Supports boolean, number, string data-types
        • Boxes
          • Represents variable values
          • Support boolean, number, string, generic data-types
        • Box Identifiers
          • Represents variable identifiers
          • Supports boolean, number, string, generic boxes
        • Math Operators
          • plus, minus, times, divide, modulus operators
        • Conditionals: if
        • Loops: generic repeat
        • Program: process and routine
        • Miscellaneous: print
      • Added a specification of the above syntax elements