Commit Graph

7 Commits

Author SHA1 Message Date
Jose Luis Montañes Ojados
a36e52a9c3 Replace print/println keywords with generic function call mechanism
- Add NODE_CALL with name, args, and arg_count to parser
- Add TOK_COMMA token and tokenize (, ), , in lexer
- Remove TOK_PRINT/TOK_PRINTLN keywords; print/println are now regular
  identifiers resolved as built-in functions in the evaluator
- Add NODE_CALL debug output in ast_print
2026-02-16 18:14:39 +01:00
Jose Luis Montañes Ojados
dd67537598 Add string type support: literals, concatenation, println, and if eval
- Implement string literal tokenization and parsing (lexer + parser)
- Add string concatenation with + operator in evaluator
- Add println keyword for printing with newline
- Add NODE_IF evaluation in VM
- Fix null terminator bug in string concat buffer
2026-02-16 17:40:12 +01:00
Jose Luis Montañes Ojados
65220f88c6 Add if statements, unary minus, and fix GC safe points
- Lexer: recognize 'if' as keyword (TOK_IF)
- Parser: add NODE_IF with if_statement union, parse if/cond/body,
  handle unary minus in parse_term as 0 - expr
- Eval: add NODE_IF evaluation, move GC to NODE_BLOCK level to avoid
  destroying temporary values during sub-expression evaluation
2026-02-16 05:12:28 +01:00
Jose Luis Montañes Ojados
84b3abbfda Add while loops, GC mark-and-sweep, and malloc block reuse
- Lexer: add INDENT/DEDENT tokens, <, >, : operators, while keyword,
  closing DEDENT emission, include guards
- Parser: add NODE_WHILE with while_loop union, parse while/cond/body
  blocks, include guards
- Eval: add while loop evaluation, GC integration with roots from env,
  debug and gc flags, <, > comparison operators
- GC: implement mark-and-sweep collector with 3 stages (mark roots,
  sweep unmarked, join free blocks)
- Allocator: block reuse via first-fit search with splitting, exponential
  heap growth, NULL check on malloc, include guards, marked field in metadata
- Object: add include guards, fix include to use allocator.h
2026-02-16 04:55:52 +01:00
Jose Luis Montañes Ojados
14b6a2ddd2 Add * and / operators, VM step debugger, and visualizer tweaks
Support multiply and divide in lexer, parser and eval.
Add step-by-step VM debug output with AST and heap visualization.
Remove spacing in visualizer hex output.
2026-02-16 02:24:37 +01:00
Jose Luis Montañes Ojados
01740d4892 Add evaluator with environment and file-based execution
Implements recursive AST evaluator with variable environment,
reads .j files from command line args, and executes programs
end-to-end (lexer -> parser -> eval).
2026-02-16 02:08:54 +01:00
Jose Luis Montañes Ojados
74b426e12d first commit 2026-02-15 20:48:01 +01:00