Claude Code transcript

6 prompts · 168 messages · 67 tool calls · 1 commits · 2 pages

#1

Implement the following plan:

Plan: Support INT16, INT32, INT64 integer types (Issue #46)

Context

The parser doesn't recognize INT16, INT32, INT64 as type keywords, causing parse failures on real-world occam programs (e.g., cast.occ, commstime.occ). These are standard occam explicit-width integer types that need the same treatment as INT, BYTE, REAL32, REAL64.

Changes

1. Lexer — lexer/token.go

Add 3 new token types and keyword entries:

  • Token enum (~line 82): Add INT16_TYPE, INT32_TYPE, INT64_TYPE after REAL64_TYPE
  • tokenNames map (~line 172): Add "INT16", "INT32", "INT64" entries
  • keywords map (~line 220): Add "INT16": INT16_TYPE, "INT32": INT32_TYPE, "INT64": INT64_TYPE

2. Parser — parser/parser.go

  • isTypeToken() (~line 1978): Add || t == lexer.INT16_TYPE || t == lexer.INT32_TYPE || t == lexer.INT64_TYPE — this single change propagates to all ~17 call sites
  • MOSTNEG/MOSTPOS parsing (~line 2795): Add !p.peekTokenIs(lexer.INT16_TYPE) && !p.peekTokenIs(lexer.INT32_TYPE) && !p.peekTokenIs(lexer.INT64_TYPE) to the guard check
  • Type conversion prefix (~line 2807): Add lexer.INT16_TYPE, lexer.INT32_TYPE, lexer.INT64_TYPE to the case list

3. AST — ast/ast.go

No changes needed — types stored as strings.

4. Codegen — codegen/codegen.go

  • occamTypeToGoBase() (~line 1400): Add cases "INT16" → "int16", "INT32" → "int32", "INT64" → "int64"
  • occamTypeToGo() (~line 1421): Add same cases
  • generateMostExpr() (~line 926): Add cases for INT16/INT32/INT64 mapping to math.MinInt16/math.MaxInt16, etc.
  • exprNeedsMath() (~line 893): Current check is return e.ExprType != "BYTE" — INT16/32/64 all need math import, so no change needed (they won't match "BYTE")

5. Tests

  • Parser unit tests (parser/parser_test.go): Add test for INT16/INT32/INT64 variable declarations and type conversions
  • Codegen unit tests (codegen/codegen_test.go): Add test for INT16/INT32/INT64 code generation
  • E2E tests (codegen/e2e_test.go or codegen/e2e_types_test.go): Add test that declares INT16/32/64 variables, uses type conversions and MOSTNEG/MOSTPOS, compiles and runs

6. Documentation

  • Update TODO.md to mark INT16/INT32/INT64 as supported

Verification

go test ./...                    # all tests pass
./occam2go -I kroc/modules/course/libsrc -D TARGET.BITS.PER.WORD=32 -o /tmp/course_out.go kroc/modules/course/libsrc/course.module
go vet /tmp/course_out.go        # course module still compiles

If you need specific details from before exiting plan mode (like exact code snippets, error messages, or content you generated), read the full transcript at: /home/david/.claude/projects/-home-david-projects-code-associates-occam2go/be722174-d55e-4926-9bb6-697f4111e01a.jsonl

23 edit · 20 read · 9 grep · 3 bash · 2 taskupdate · 1 taskcreate

All done. Here's a summary of the changes:

Files modified

  1. lexer/token.go — Added INT16_TYPE, INT32_TYPE, INT64_TYPE token types, names, and keyword entries
  2. parser/parser.go — Updated 4 locations:
  3. isTypeToken() — added INT16/32/64 (propagates to ~17 call sites)
  4. parseStatement() switch case — added INT16/32/64
  5. isAltDeclStart() — added INT16/32/64
  6. MOSTNEG/MOSTPOS guard — added INT16/32/64 to peek check
  7. Type conversion prefix case — added INT16/32/64
  8. codegen/codegen.go — Updated 4 functions:
  9. occamTypeToGoBase() — INT16→int16, INT32→int32, INT64→int64
  10. occamTypeToGo() — same mappings
  11. generateMostExpr() — added INT16/32/64 → math.MinInt16/MaxInt16 etc.
  12. parser/parser_test.go — Added 3 tests: var decl, type conversion, MOSTNEG/MOSTPOS
  13. codegen/codegen_test.go — Added INT16/32/64 cases to existing type conversion and MOSTNEG/MOSTPOS test tables
  14. codegen/e2e_types_test.go — Added 6 e2e tests: var decl + conversion for each type, MOSTNEG/MOSTPOS for INT16 and INT32, and type conversion from INT
  15. TODO.md and CLAUDE.md — Updated documentation

All tests pass (go test ./...) and the course module still transpiles and passes go vet.

#2

Thank you. Please create a PR for this feature.

8 bash
4ed782c
Support INT16, INT32, INT64 integer types
#3

Thank you. I've approved the PR. Please merge.

1 bash
#5

/exit exit

#6

Bye!

#4

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