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Author SHA1 Message Date
Claude
192d9c5c3d
M2: Add call graph analysis, recursion detection, and optimizer 
Analyzer extensions:
- Call graph construction from function bodies and state handlers
- DFS-based recursion detection (direct and mutual) with E0402 errors
- Max call depth computation per entry point with E0401 enforcement
- Function declarations registered as symbols (E0503 for undefined calls)
- Collects calls from all statement/expression types recursively

Optimizer (new module):
- Constant folding: evaluate known-constant arithmetic at compile time
- Dead code elimination: remove ops with unused destination temps
- Both operate per-basic-block in a single pass

171 tests total (22 new: 6 analyzer + 11 IR lowering + 5 optimizer)

https://claude.ai/code/session_01W6eQFStA66EuMKHUFo2rx3
 2026-04-11 23:32:12 +00:00
Claude
664ccc05db
M2: Add function/array parsing, IR data structures and lowering 
Parser extensions:
- Function declarations with params and return types (fun, inline fun)
- Array type syntax (u8[16]), array literal expressions ([1, 2, 3])
- fast/slow variable placement hints
- Functions stored in Program AST

IR module (new):
- IrProgram, IrFunction, IrBasicBlock, IrOp, IrTerminator types
- AST-to-IR lowering pass with:
  - Expression lowering to virtual temps
  - Control flow (if/else, while, loop) to basic blocks with branches
  - Break/continue via loop context stack
  - Short-circuit logical and/or
  - Button reads, draw sprites, wait_frame
  - Constants inlined as LoadImm
  - State handlers lowered as separate IR functions

Tests: 6 new parser tests, 11 new IR lowering tests (153 total)

https://claude.ai/code/session_01W6eQFStA66EuMKHUFo2rx3
 2026-04-11 23:25:26 +00:00
Claude
fd5a940c89
Add example builds to CI, document sprite name behavior 
- CI: new "Build Examples" job compiles all .ne files and validates
  the output ROMs have correct iNES headers
- Examples: add notes explaining that sprite names (Smiley, Ball) are
  parsed but not yet resolved — all draws use the built-in CHR tile 0.
  Custom sprite declarations come in M3.
- Codegen: explicit `let _ = &draw.sprite_name` to document the
  intentional skip, with comment about M2/M3 scope

https://claude.ai/code/session_01W6eQFStA66EuMKHUFo2rx3
 2026-04-11 22:55:43 +00:00
Claude
a20ddcbbab
Add example games and quick-start guide 
Two example .ne programs with compiled .nes ROMs:
- hello_sprite: d-pad controlled sprite movement
- bouncing_ball: auto-bouncing sprite with edge detection

Includes README with build instructions and emulator setup.

https://claude.ai/code/session_01W6eQFStA66EuMKHUFo2rx3
 2026-04-11 22:17:18 +00:00
Claude
39ca246151
Implement NEScript compiler Milestone 1 ("Hello Sprite") 
Complete implementation of the NEScript compiler pipeline for M1:
- Lexer: full tokenization with hex/binary/decimal literals, all keywords, operators
- Parser: recursive descent with Pratt expression parsing (M1 subset)
- Analyzer: symbol resolution, type checking, memory allocation
- 6502 Assembler: full opcode encoding table (~150 valid combinations)
- Code Generator: AST → 6502 instructions (direct, no IR for M1)
- Runtime: NES hardware init, NMI handler, controller read, OAM DMA
- Linker: NROM layout, vector table, palette loading, CHR data
- ROM Builder: iNES header generation, PRG/CHR padding
- CLI: `build` and `check` subcommands via clap

143 tests across all modules:
- 22 lexer tests (literals, keywords, operators, error recovery)
- 18 parser tests (expressions, statements, game structure, errors)
- 7 analyzer tests (symbol resolution, memory allocation, transitions)
- 30 assembler tests (every addressing mode, label resolution)
- 7 codegen tests (var init, arithmetic, buttons, draw, comparisons)
- 11 runtime tests (init sequence, NMI handler, controller read)
- 10 ROM builder tests (iNES format, mirroring, banking, validation)
- 5 linker tests (vector table, CHR data, palette loading)
- 7 integration tests (end-to-end compilation, error detection)

CI: GitHub Actions for check, fmt, clippy, test
Pre-commit: script for local fmt + clippy + test validation

https://claude.ai/code/session_01W6eQFStA66EuMKHUFo2rx3
 2026-04-11 22:07:56 +00:00
Jason Hall
1fca6864ac
Add NEScript language specification draft 2026-04-11 17:42:59 -04:00
Jason Hall
37656fe376
Create initial engineering design document for NEScript 
Add NEScript Compiler engineering design and implementation plan.
 2026-04-11 17:42:43 -04:00