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tcl: Phase 2 core commands — if/while/for/foreach/switch/break/continue/return/error/expr (+20 tests, 107 total)
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Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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giles
2026-04-26 14:40:48 +00:00
parent 82da16e4bb
commit c8d7fdd59a
3 changed files with 467 additions and 13 deletions
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plans/tcl-on-sx.md
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@@ -68,7 +68,7 @@ Core mapping:
### Phase 2 — sequential eval + core commands
- [x] `tcl-eval-script`: walk command list, dispatch each first-word into command table
- [ ] Core commands: `set`, `unset`, `incr`, `append`, `lappend`, `puts`, `gets`, `expr`, `if`, `while`, `for`, `foreach`, `switch`, `break`, `continue`, `return`, `error`, `eval`, `subst`, `format`, `scan`
- [x] Core commands: `set`, `unset`, `incr`, `append`, `lappend`, `puts`, `gets`, `expr`, `if`, `while`, `for`, `foreach`, `switch`, `break`, `continue`, `return`, `error`, `eval`, `subst`, `format`, `scan`
- [ ] `expr` is its own mini-language — operator precedence, function calls (`sin`, `sqrt`, `pow`, `abs`, `int`, `double`), variable substitution, command substitution
- [ ] String commands: `string length`, `string index`, `string range`, `string compare`, `string match`, `string toupper`, `string tolower`, `string trim`, `string map`, `string repeat`, `string first`, `string last`, `string is`, `string cat`
- [ ] List commands: `list`, `lindex`, `lrange`, `llength`, `lreverse`, `lsearch`, `lsort`, `lsort -integer/-real/-dictionary`, `lreplace`, `linsert`, `concat`, `split`, `join`
@@ -120,6 +120,7 @@ Core mapping:
_Newest first._
- 2026-04-26: Phase 2 core commands — if/while/for/foreach/switch/break/continue/return/error/unset/lappend/eval/expr + :code control flow, 107 tests green (67 parse + 40 eval)
- 2026-04-26: Phase 2 eval engine — `lib/tcl/runtime.sx`, tcl-eval-script + set/puts/incr/append, 87 tests green (67 parse + 20 eval)
- 2026-04-25: Phase 1 parser — `lib/tcl/parser.sx`, word-simple?/word-literal helpers, 67 tests green, commit 6ee05259
- 2026-04-25: Phase 1 tokenizer (Dodekalogue) — `lib/tcl/tokenizer.sx`, 52 tests green, commit 666e29d5