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tcl: merge loops/tcl — complete Tcl 8.6 subset (329 tests)
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Phases 1-6: Dodekalogue tokenizer/parser, eval engine, expr mini-language,
string/list/dict commands, proc + uplevel/upvar (the headline showcase),
catch/try/throw, namespaces + ensembles, generator coroutines, idiom corpus.

Resolved add/add conflicts by taking loops/tcl (the complete tested impl)
over the architecture branch's earlier prototype.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
giles
2026-05-06 11:36:59 +00:00
parent 74ce9e7c75 bc45b7abf5
commit bf190b8fc4
19 changed files with 5187 additions and 354 deletions
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145
lib/tcl/conformance.sh Executable file
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#!/usr/bin/env bash
# Tcl-on-SX conformance runner — epoch protocol to sx_server.exe
# Usage: lib/tcl/conformance.sh [file.tcl ...]
# Defaults to lib/tcl/tests/programs/*.tcl
set -uo pipefail
cd "$(git rev-parse --show-toplevel)"
SX_SERVER="${SX_SERVER:-hosts/ocaml/_build/default/bin/sx_server.exe}"
if [ ! -x "$SX_SERVER" ]; then
SX_SERVER="/root/rose-ash/hosts/ocaml/_build/default/bin/sx_server.exe"
fi
if [ ! -x "$SX_SERVER" ]; then echo "ERROR: sx_server.exe not found"; exit 1; fi
SCOREBOARD_JSON="${SCOREBOARD_JSON:-lib/tcl/scoreboard.json}"
SCOREBOARD_MD="${SCOREBOARD_MD:-lib/tcl/scoreboard.md}"
# Collect tcl files
if [ "$#" -gt 0 ]; then
TCL_FILES=("$@")
else
TCL_FILES=(lib/tcl/tests/programs/*.tcl)
fi
# Generate a helper .sx file that defines the Tcl source as an SX string variable.
# We escape the source for SX string literals: backslashes → \\, quotes → \", newlines → \n.
# This is safe in a (define ...) context — no double-parsing like (eval "...") would cause.
write_sx_helper() {
local tcl_file="$1"
local helper_file="$2"
python3 << PYEOF
src = open('${tcl_file}').read()
escaped = src.replace('\\\\', '\\\\\\\\').replace('"', '\\\\"').replace('\\n', '\\\\n')
with open('${helper_file}', 'w') as f:
f.write(f'(define __tcl-src "{escaped}")\\n')
f.write('(define __tcl-result (get (tcl-eval-string (make-default-tcl-interp) __tcl-src) :result))\\n')
PYEOF
}
total=0
passed=0
failed=0
programs_json=""
md_rows=""
for tcl_file in "${TCL_FILES[@]}"; do
basename_noext=$(basename "$tcl_file" .tcl)
total=$((total + 1))
# Read expected value from first-line comment "# expected: VALUE"
expected=$(head -1 "$tcl_file" | sed -n 's/^# expected: *//p')
if [ -z "$expected" ]; then
echo "WARN: no '# expected:' annotation in $tcl_file — skipping"
continue
fi
tmpfile=$(mktemp)
helper=$(mktemp --suffix=.sx)
trap "rm -f $tmpfile $helper" EXIT
# Write helper .sx with Tcl source embedded as SX string
write_sx_helper "$tcl_file" "$helper"
# Build epoch input using quoted heredoc for static parts; helper path via variable
cat > "$tmpfile" << EPOCHS
(epoch 1)
(load "lib/tcl/tokenizer.sx")
(epoch 2)
(load "lib/tcl/parser.sx")
(epoch 3)
(load "lib/tcl/runtime.sx")
(epoch 4)
(load "$helper")
(epoch 5)
(eval "__tcl-result")
(epoch 6)
EPOCHS
output=$(timeout 30 "$SX_SERVER" < "$tmpfile" 2>&1)
got=$(echo "$output" | grep -A1 "^(ok-len 5 " | tail -1 | tr -d '"')
if [ "$got" = "$expected" ]; then
status="PASS"
passed=$((passed + 1))
echo "PASS $basename_noext (expected: $expected, got: $got)"
else
status="FAIL"
failed=$((failed + 1))
echo "FAIL $basename_noext (expected: $expected, got: ${got:-<empty>})"
if [ -n "${VERBOSE:-}" ]; then
echo "--- server output ---"
echo "$output"
echo "--- helper.sx ---"
cat "$helper"
fi
fi
# Accumulate JSON fragment (escape for JSON)
got_json=$(printf '%s' "$got" | python3 -c "import sys,json; sys.stdout.write(json.dumps(sys.stdin.read()))" | tr -d '"')
exp_json=$(printf '%s' "$expected" | python3 -c "import sys,json; sys.stdout.write(json.dumps(sys.stdin.read()))" | tr -d '"')
if [ -n "$programs_json" ]; then
programs_json="${programs_json},"
fi
programs_json="${programs_json}
\"${basename_noext}\": {\"status\": \"${status}\", \"expected\": \"${exp_json}\", \"got\": \"${got_json}\"}"
# Accumulate Markdown row
if [ "$status" = "PASS" ]; then
icon="✓ PASS"
else
icon="✗ FAIL"
fi
md_rows="${md_rows}| ${basename_noext} | ${icon} | ${expected} | ${got} |
"
done
# Write scoreboard.json
cat > "$SCOREBOARD_JSON" << JSON
{
"total": ${total},
"passed": ${passed},
"failed": ${failed},
"programs": {${programs_json}
}
}
JSON
# Write scoreboard.md
cat > "$SCOREBOARD_MD" << MD
# Tcl-on-SX Conformance Scoreboard
| Program | Status | Expected | Got |
|---|---|---|---|
${md_rows}
**${passed}/${total} passing**
MD
echo ""
echo "Scoreboard: ${passed}/${total} passing"
echo "Written: $SCOREBOARD_JSON, $SCOREBOARD_MD"
if [ "$failed" -gt 0 ]; then
exit 1
fi
exit 0

41
lib/tcl/parser.sx Normal file
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; Tcl parser — thin layer over tcl-tokenize
; Adds tcl-parse entry point and word utility fns
; Entry point: parse Tcl source to a list of commands.
; Returns same structure as tcl-tokenize.
(define tcl-parse (fn (src) (tcl-tokenize src)))
; True if word has no substitutions — value can be read statically.
; braced words are always simple. compound words are simple when all
; parts are plain text with no var/cmd parts.
(define tcl-word-simple?
(fn (word)
(cond
((= (get word :type) "braced") true)
((= (get word :type) "compound")
(let ((parts (get word :parts)))
(every? (fn (p) (= (get p :type) "text")) parts)))
(else false))))
; Concatenate text parts of a simple word into a single string.
; For braced words returns :value directly.
; For compound words with only text parts, joins them.
; Returns nil for words with substitutions.
(define tcl-word-literal
(fn (word)
(cond
((= (get word :type) "braced") (get word :value))
((= (get word :type) "compound")
(if (tcl-word-simple? word)
(join "" (map (fn (p) (get p :value)) (get word :parts)))
nil))
(else nil))))
; Number of words in a parsed command.
(define tcl-cmd-len
(fn (cmd) (len (get cmd :words))))
; Nth word literal from a command (index 0 = command name).
; Returns nil if word has substitutions.
(define tcl-nth-literal
(fn (cmd n) (tcl-word-literal (nth (get cmd :words) n))))

3529
lib/tcl/runtime.sx
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10
lib/tcl/scoreboard.json Normal file
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{
"total": 3,
"passed": 3,
"failed": 0,
"programs": {
"assert": {"status": "PASS", "expected": "10", "got": "10"},
"for-each-line": {"status": "PASS", "expected": "13", "got": "13"},
"with-temp-var": {"status": "PASS", "expected": "100 999", "got": "100 999"}
}
}

9
lib/tcl/scoreboard.md Normal file
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# Tcl-on-SX Conformance Scoreboard
| Program | Status | Expected | Got |
|---|---|---|---|
| assert | ✓ PASS | 10 | 10 |
| for-each-line | ✓ PASS | 13 | 13 |
| with-temp-var | ✓ PASS | 100 999 | 100 999 |
**3/3 passing**

129
lib/tcl/test.sh
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@@ -1,6 +1,5 @@
#!/usr/bin/env bash
# lib/tcl/test.sh — smoke-test the Tcl runtime layer.
# Tcl-on-SX test runner — epoch protocol to sx_server.exe
set -uo pipefail
cd "$(git rev-parse --show-toplevel)"
@@ -8,55 +7,107 @@ SX_SERVER="${SX_SERVER:-hosts/ocaml/_build/default/bin/sx_server.exe}"
if [ ! -x "$SX_SERVER" ]; then
SX_SERVER="/root/rose-ash/hosts/ocaml/_build/default/bin/sx_server.exe"
fi
if [ ! -x "$SX_SERVER" ]; then
echo "ERROR: sx_server.exe not found."
exit 1
fi
if [ ! -x "$SX_SERVER" ]; then echo "ERROR: sx_server.exe not found"; exit 1; fi
TMPFILE=$(mktemp); trap "rm -f $TMPFILE" EXIT
VERBOSE="${1:-}"
TMPFILE=$(mktemp)
HELPER=$(mktemp --suffix=.sx)
trap "rm -f $TMPFILE $HELPER" EXIT
cat > "$TMPFILE" << 'EPOCHS'
# Helper file: run all test suites and format a parseable summary string
cat > "$HELPER" << 'HELPER_EOF'
(define __pr (tcl-run-parse-tests))
(define __er (tcl-run-eval-tests))
(define __xr (tcl-run-error-tests))
(define __nr (tcl-run-namespace-tests))
(define __cr (tcl-run-coro-tests))
(define __ir (tcl-run-idiom-tests))
(define tcl-test-summary
(str "PARSE:" (get __pr "passed") ":" (get __pr "failed")
" EVAL:" (get __er "passed") ":" (get __er "failed")
" ERROR:" (get __xr "passed") ":" (get __xr "failed")
" NAMESPACE:" (get __nr "passed") ":" (get __nr "failed")
" CORO:" (get __cr "passed") ":" (get __cr "failed")
" IDIOM:" (get __ir "passed") ":" (get __ir "failed")))
HELPER_EOF
cat > "$TMPFILE" << EPOCHS
(epoch 1)
(load "lib/tcl/runtime.sx")
(load "lib/tcl/tokenizer.sx")
(epoch 2)
(load "lib/tcl/tests/runtime.sx")
(load "lib/tcl/parser.sx")
(epoch 3)
(eval "(list tcl-test-pass tcl-test-fail)")
(load "lib/tcl/tests/parse.sx")
(epoch 4)
(load "lib/tcl/runtime.sx")
(epoch 5)
(load "lib/tcl/tests/eval.sx")
(epoch 6)
(load "lib/tcl/tests/error.sx")
(epoch 7)
(load "lib/tcl/tests/namespace.sx")
(epoch 8)
(load "lib/tcl/tests/coro.sx")
(epoch 9)
(load "lib/tcl/tests/idioms.sx")
(epoch 10)
(load "$HELPER")
(epoch 11)
(eval "tcl-test-summary")
EPOCHS
OUTPUT=$(timeout 60 "$SX_SERVER" < "$TMPFILE" 2>/dev/null)
OUTPUT=$(timeout 180 "$SX_SERVER" < "$TMPFILE" 2>&1)
[ "$VERBOSE" = "-v" ] && echo "$OUTPUT"
LINE=$(echo "$OUTPUT" | awk '/^\(ok-len 3 / {getline; print; exit}')
if [ -z "$LINE" ]; then
LINE=$(echo "$OUTPUT" | grep -E '^\(ok 3 \([0-9]+ [0-9]+\)\)' | tail -1 \
| sed -E 's/^\(ok 3 //; s/\)$//')
fi
if [ -z "$LINE" ]; then
echo "ERROR: could not extract summary"
# Extract summary line from epoch 11 output
SUMMARY=$(echo "$OUTPUT" | grep -A1 "^(ok-len 11 " | tail -1 | tr -d '"')
if [ -z "$SUMMARY" ]; then
echo "ERROR: no summary from test run"
echo "$OUTPUT" | tail -20
exit 1
fi
P=$(echo "$LINE" | sed -E 's/^\(([0-9]+) ([0-9]+)\).*/\1/')
F=$(echo "$LINE" | sed -E 's/^\(([0-9]+) ([0-9]+)\).*/\2/')
TOTAL=$((P + F))
# Parse PARSE:N:M EVAL:N:M ERROR:N:M NAMESPACE:N:M CORO:N:M IDIOM:N:M
PARSE_PART=$(echo "$SUMMARY" | grep -o 'PARSE:[0-9]*:[0-9]*')
EVAL_PART=$(echo "$SUMMARY" | grep -o 'EVAL:[0-9]*:[0-9]*')
ERROR_PART=$(echo "$SUMMARY" | grep -o 'ERROR:[0-9]*:[0-9]*')
NAMESPACE_PART=$(echo "$SUMMARY" | grep -o 'NAMESPACE:[0-9]*:[0-9]*')
CORO_PART=$(echo "$SUMMARY" | grep -o 'CORO:[0-9]*:[0-9]*')
IDIOM_PART=$(echo "$SUMMARY" | grep -o 'IDIOM:[0-9]*:[0-9]*')
if [ "$F" -eq 0 ]; then
echo "ok $P/$TOTAL lib/tcl tests passed"
PARSE_PASSED=$(echo "$PARSE_PART" | cut -d: -f2)
PARSE_FAILED=$(echo "$PARSE_PART" | cut -d: -f3)
EVAL_PASSED=$(echo "$EVAL_PART" | cut -d: -f2)
EVAL_FAILED=$(echo "$EVAL_PART" | cut -d: -f3)
ERROR_PASSED=$(echo "$ERROR_PART" | cut -d: -f2)
ERROR_FAILED=$(echo "$ERROR_PART" | cut -d: -f3)
NAMESPACE_PASSED=$(echo "$NAMESPACE_PART" | cut -d: -f2)
NAMESPACE_FAILED=$(echo "$NAMESPACE_PART" | cut -d: -f3)
CORO_PASSED=$(echo "$CORO_PART" | cut -d: -f2)
CORO_FAILED=$(echo "$CORO_PART" | cut -d: -f3)
IDIOM_PASSED=$(echo "$IDIOM_PART" | cut -d: -f2)
IDIOM_FAILED=$(echo "$IDIOM_PART" | cut -d: -f3)
PARSE_PASSED=${PARSE_PASSED:-0}; PARSE_FAILED=${PARSE_FAILED:-1}
EVAL_PASSED=${EVAL_PASSED:-0}; EVAL_FAILED=${EVAL_FAILED:-1}
ERROR_PASSED=${ERROR_PASSED:-0}; ERROR_FAILED=${ERROR_FAILED:-1}
NAMESPACE_PASSED=${NAMESPACE_PASSED:-0}; NAMESPACE_FAILED=${NAMESPACE_FAILED:-1}
CORO_PASSED=${CORO_PASSED:-0}; CORO_FAILED=${CORO_FAILED:-1}
IDIOM_PASSED=${IDIOM_PASSED:-0}; IDIOM_FAILED=${IDIOM_FAILED:-1}
TOTAL_PASSED=$((PARSE_PASSED + EVAL_PASSED + ERROR_PASSED + NAMESPACE_PASSED + CORO_PASSED + IDIOM_PASSED))
TOTAL_FAILED=$((PARSE_FAILED + EVAL_FAILED + ERROR_FAILED + NAMESPACE_FAILED + CORO_FAILED + IDIOM_FAILED))
TOTAL=$((TOTAL_PASSED + TOTAL_FAILED))
if [ "$TOTAL_FAILED" = "0" ]; then
echo "ok $TOTAL_PASSED/$TOTAL tcl tests passed (parse: $PARSE_PASSED, eval: $EVAL_PASSED, error: $ERROR_PASSED, namespace: $NAMESPACE_PASSED, coro: $CORO_PASSED, idiom: $IDIOM_PASSED)"
exit 0
else
echo "FAIL $P/$TOTAL passed, $F failed"
TMPFILE2=$(mktemp)
cat > "$TMPFILE2" << 'EPOCHS2'
(epoch 1)
(load "lib/tcl/runtime.sx")
(epoch 2)
(load "lib/tcl/tests/runtime.sx")
(epoch 3)
(eval "(map (fn (f) (list (get f :name) (get f :got) (get f :expected))) tcl-test-fails)")
EPOCHS2
FAILS=$(timeout 60 "$SX_SERVER" < "$TMPFILE2" 2>/dev/null | grep -E '^\(ok-len 3' -A1 | tail -1 || true)
echo " Details: $FAILS"
rm -f "$TMPFILE2"
echo "FAIL $TOTAL_PASSED/$TOTAL passed, $TOTAL_FAILED failed (parse: $PARSE_PASSED/$((PARSE_PASSED+PARSE_FAILED)), eval: $EVAL_PASSED/$((EVAL_PASSED+EVAL_FAILED)), error: $ERROR_PASSED/$((ERROR_PASSED+ERROR_FAILED)), namespace: $NAMESPACE_PASSED/$((NAMESPACE_PASSED+NAMESPACE_FAILED)), coro: $CORO_PASSED/$((CORO_PASSED+CORO_FAILED)), idiom: $IDIOM_PASSED/$((IDIOM_PASSED+IDIOM_FAILED)))"
if [ -z "$VERBOSE" ]; then
echo "--- output ---"
echo "$OUTPUT" | tail -30
fi
exit 1
fi
[ "$F" -eq 0 ]

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lib/tcl/tests/coro.sx Normal file
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; Tcl-on-SX coroutine tests (Phase 6)
(define tcl-coro-pass 0)
(define tcl-coro-fail 0)
(define tcl-coro-failures (list))
(define
tcl-coro-assert
(fn
(label expected actual)
(if
(equal? expected actual)
(set! tcl-coro-pass (+ tcl-coro-pass 1))
(begin
(set! tcl-coro-fail (+ tcl-coro-fail 1))
(append!
tcl-coro-failures
(str label ": expected=" (str expected) " got=" (str actual)))))))
(define
tcl-run-coro-tests
(fn
()
(set! tcl-coro-pass 0)
(set! tcl-coro-fail 0)
(set! tcl-coro-failures (list))
(define interp (fn () (make-default-tcl-interp)))
(define run (fn (src) (tcl-eval-string (interp) src)))
(define
ok
(fn (label actual expected) (tcl-coro-assert label expected actual)))
; --- basic coroutine: yields one value ---
(ok "coro-single-yield"
(get (run "proc gen {} { yield hello }\ncoroutine g gen\ng") :result)
"hello")
; --- coroutine yields multiple values in order ---
(ok "coro-multi-yield-1"
(get (run "proc cnt {} { yield a; yield b; yield c }\ncoroutine c1 cnt\nc1") :result)
"a")
(ok "coro-multi-yield-2"
(get (run "proc cnt {} { yield a; yield b; yield c }\ncoroutine c1 cnt\nc1\nc1") :result)
"b")
(ok "coro-multi-yield-3"
(get (run "proc cnt {} { yield a; yield b; yield c }\ncoroutine c1 cnt\nc1\nc1\nc1") :result)
"c")
; --- coroutine with arguments to proc ---
(ok "coro-args"
(get (run "proc gen2 {n} { yield $n; yield [expr {$n + 1}] }\ncoroutine g2 gen2 10\ng2") :result)
"10")
(ok "coro-args-2"
(get (run "proc gen2 {n} { yield $n; yield [expr {$n + 1}] }\ncoroutine g2 gen2 10\ng2\ng2") :result)
"11")
; --- coroutine exhausted returns empty string ---
(ok "coro-exhausted"
(get (run "proc g3 {} { yield only }\ncoroutine c3 g3\nc3\nc3") :result)
"")
; --- yield in while loop ---
(ok "coro-while-loop-1"
(get (run "proc counter {max} { set i 0; while {$i < $max} { yield $i; incr i } }\ncoroutine cw counter 3\ncw") :result)
"0")
(ok "coro-while-loop-2"
(get (run "proc counter {max} { set i 0; while {$i < $max} { yield $i; incr i } }\ncoroutine cw counter 3\ncw\ncw") :result)
"1")
(ok "coro-while-loop-3"
(get (run "proc counter {max} { set i 0; while {$i < $max} { yield $i; incr i } }\ncoroutine cw counter 3\ncw\ncw\ncw") :result)
"2")
; --- collect all yields from coroutine ---
(ok "coro-collect-all"
(get
(run
"proc counter {n max} { while {$n < $max} { yield $n; incr n }; yield done }\ncoroutine gen1 counter 0 3\nset out {}\nfor {set i 0} {$i < 4} {incr i} { lappend out [gen1] }\nlindex $out 3")
:result)
"done")
; --- two independent coroutines ---
(ok "coro-two-independent"
(get
(run
"proc seq {start} { yield $start; yield [expr {$start+1}] }\ncoroutine ca seq 0\ncoroutine cb seq 10\nset r [ca]\nappend r \":\" [cb]")
:result)
"0:10")
; --- yield with no value returns empty string ---
(ok "coro-yield-no-val"
(get (run "proc g {} { yield }\ncoroutine cg g\ncg") :result)
"")
; --- clock seconds stub ---
(ok "clock-seconds"
(get (run "clock seconds") :result)
"0")
; --- clock milliseconds stub ---
(ok "clock-milliseconds"
(get (run "clock milliseconds") :result)
"0")
; --- clock format stub ---
(ok "clock-format"
(get (run "clock format 0") :result)
"Thu Jan 1 00:00:00 UTC 1970")
; --- file stubs ---
(ok "file-exists-stub"
(get (run "file exists /no/such/file") :result)
"0")
(ok "file-join"
(get (run "file join foo bar baz") :result)
"foo/bar/baz")
(ok "open-returns-channel"
(get (run "open /dev/null r") :result)
"file0")
(ok "eof-returns-1"
(get (run "set ch [open /dev/null r]\neof $ch") :result)
"1")
(dict
"passed"
tcl-coro-pass
"failed"
tcl-coro-fail
"failures"
tcl-coro-failures)))

192
lib/tcl/tests/error.sx Normal file
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; Tcl-on-SX error handling tests (Phase 4)
(define tcl-err-pass 0)
(define tcl-err-fail 0)
(define tcl-err-failures (list))
(define
tcl-err-assert
(fn
(label expected actual)
(if
(equal? expected actual)
(set! tcl-err-pass (+ tcl-err-pass 1))
(begin
(set! tcl-err-fail (+ tcl-err-fail 1))
(append!
tcl-err-failures
(str label ": expected=" (str expected) " got=" (str actual)))))))
(define
tcl-run-error-tests
(fn
()
(set! tcl-err-pass 0)
(set! tcl-err-fail 0)
(set! tcl-err-failures (list))
(define interp (fn () (make-default-tcl-interp)))
(define run (fn (src) (tcl-eval-string (interp) src)))
(define
ok
(fn (label actual expected) (tcl-err-assert label expected actual)))
(define
ok?
(fn (label condition) (tcl-err-assert label true condition)))
; --- catch basic ---
(ok "catch-ok-code" (get (run "catch {set x 1}") :result) "0")
(ok "catch-ok-result-var" (tcl-var-get (run "catch {set x hello} r") "r") "hello")
(ok "catch-ok-returns-0" (get (run "catch {set x hello} r") :result) "0")
; --- catch error ---
(ok "catch-error-code" (get (run "catch {error oops} r") :result) "1")
(ok "catch-error-result-var" (tcl-var-get (run "catch {error oops} r") "r") "oops")
; --- catch outer code stays 0 ---
(ok? "catch-outer-code-ok" (= (get (run "catch {error boom} r") :code) 0))
; --- catch code 2 (return) ---
(ok "catch-return-code" (get (run "proc p {} {return hello}\ncatch {p} r") :result) "0")
(ok "catch-return-val" (tcl-var-get (run "proc p {} {return hello}\ncatch {p} r") "r") "hello")
; --- catch code 3 (break) ---
(ok "catch-break-code" (get (run "catch {break} r") :result) "3")
; --- catch code 4 (continue) ---
(ok "catch-continue-code" (get (run "catch {continue} r") :result) "4")
; --- catch no resultVar ---
(ok "catch-no-var-ok" (get (run "catch {set x 1}") :result) "0")
(ok "catch-no-var-err" (get (run "catch {error boom}") :result) "1")
; --- catch with optsVar ---
(ok? "catch-opts-var-set"
(let
((i (run "catch {error boom} r opts")))
(not (equal? (tcl-var-get i "opts") ""))))
(ok? "catch-opts-contains-code"
(let
((i (run "catch {error boom} r opts")))
(let
((opts-str (tcl-var-get i "opts")))
(not (equal? (tcl-string-first "-code" opts-str 0) "-1")))))
; --- catch nested ---
(ok "catch-nested"
(tcl-var-get (run "catch {catch {error inner} r2} outer") "r2")
"inner")
; --- return -code error ---
(ok "return-code-error-code"
(get (run "catch {return -code error oops} r") :result)
"1")
(ok "return-code-error-val"
(tcl-var-get (run "catch {return -code error oops} r") "r")
"oops")
; --- return -code ok ---
(ok "return-code-ok"
(get (run "catch {return -code ok hello} r") :result)
"0")
(ok "return-code-ok-val"
(tcl-var-get (run "catch {return -code ok hello} r") "r")
"hello")
; --- return -code break ---
(ok "return-code-break"
(get (run "catch {return -code break} r") :result)
"3")
; --- return -code continue ---
(ok "return-code-continue"
(get (run "catch {return -code continue} r") :result)
"4")
; --- return -code numeric ---
(ok "return-code-numeric-5"
(get (run "catch {return -code 5 msg} r") :result)
"5")
; --- return plain still code 2 (catch sees raw return code) ---
(ok "return-plain-code"
(get (run "catch {return hello} r") :result)
"2")
(ok "return-plain-val"
(tcl-var-get (run "catch {return hello} r") "r")
"hello")
; --- proc return -code error ---
(ok "proc-return-code-error"
(get (run "proc p {} {return -code error bad}\ncatch {p} r") :result)
"1")
(ok "proc-return-code-error-val"
(tcl-var-get (run "proc p {} {return -code error bad}\ncatch {p} r") "r")
"bad")
; --- error with info/code args ---
(ok? "error-errorinfo-stored"
(let
((i (run "catch {error msg myinfo mycode} r")))
(= (get i :code) 0)))
; --- throw ---
(ok "throw-code" (get (run "catch {throw MYERR something} r") :result) "1")
(ok "throw-msg" (tcl-var-get (run "catch {throw MYERR something} r") "r") "something")
; --- try basic ok ---
(ok "try-ok-result"
(get (run "try {set x hello} on ok {r} {set r2 $r}") :result)
"hello")
; --- try on error ---
(ok "try-on-error-handled"
(get (run "try {error boom} on error {e} {set caught $e}") :result)
"boom")
(ok "try-on-error-var"
(tcl-var-get (run "try {error boom} on error {e} {set caught $e}") "caught")
"boom")
; --- try finally always runs ---
(ok "try-finally-ok"
(tcl-var-get (run "try {set x 1} finally {set done yes}") "done")
"yes")
(ok "try-finally-error"
(tcl-var-get (run "catch {try {error boom} finally {set done yes}} r") "done")
"yes")
; --- try on error + finally ---
(ok "try-error-finally"
(tcl-var-get
(run "try {error oops} on error {e} {set caught $e} finally {set cleaned yes}")
"cleaned")
"yes")
(ok "try-error-finally-caught"
(tcl-var-get
(run "try {error oops} on error {e} {set caught $e} finally {set cleaned yes}")
"caught")
"oops")
; --- try on ok and on error ---
(ok "try-multi-clause-ok"
(tcl-var-get
(run "try {set x 1} on ok {r} {set which ok} on error {e} {set which err}")
"which")
"ok")
(ok "try-multi-clause-err"
(tcl-var-get
(run "try {error boom} on ok {r} {set which ok} on error {e} {set which err}")
"which")
"err")
; --- catch preserves output ---
(ok "catch-output-preserved"
(get (run "puts -nonewline before\ncatch {puts -nonewline inside\nerror oops}\nputs -nonewline after")
:output)
"beforeinsideafter")
(dict
"passed"
tcl-err-pass
"failed"
tcl-err-fail
"failures"
tcl-err-failures)))

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; Tcl-on-SX eval tests
(define tcl-eval-pass 0)
(define tcl-eval-fail 0)
(define tcl-eval-failures (list))
(define
tcl-eval-assert
(fn
(label expected actual)
(if
(equal? expected actual)
(set! tcl-eval-pass (+ tcl-eval-pass 1))
(begin
(set! tcl-eval-fail (+ tcl-eval-fail 1))
(append!
tcl-eval-failures
(str label ": expected=" (str expected) " got=" (str actual)))))))
(define
tcl-run-eval-tests
(fn
()
(set! tcl-eval-pass 0)
(set! tcl-eval-fail 0)
(set! tcl-eval-failures (list))
(define interp (fn () (make-default-tcl-interp)))
(define run (fn (src) (tcl-eval-string (interp) src)))
(define
ok
(fn (label actual expected) (tcl-eval-assert label expected actual)))
(define
ok?
(fn (label condition) (tcl-eval-assert label true condition)))
(tcl-eval-assert "set-result" "hello" (get (run "set x hello") :result))
(tcl-eval-assert
"set-stored"
"hello"
(tcl-var-get (run "set x hello") "x"))
(tcl-eval-assert
"var-sub"
"hello"
(tcl-var-get (run "set x hello\nset y $x") "y"))
(tcl-eval-assert
"puts"
"world\n"
(get (run "set x world\nputs $x") :output))
(tcl-eval-assert
"puts-nonewline"
"hi"
(get (run "puts -nonewline hi") :output))
(tcl-eval-assert "incr" "6" (tcl-var-get (run "set x 5\nincr x") "x"))
(tcl-eval-assert
"incr-delta"
"8"
(tcl-var-get (run "set x 5\nincr x 3") "x"))
(tcl-eval-assert
"incr-neg"
"7"
(tcl-var-get (run "set x 10\nincr x -3") "x"))
(tcl-eval-assert
"append"
"foobar"
(tcl-var-get (run "set x foo\nappend x bar") "x"))
(tcl-eval-assert
"append-new"
"hello"
(tcl-var-get (run "append x hello") "x"))
(tcl-eval-assert
"cmdsub-result"
"6"
(get (run "set x 5\nset y [incr x]") :result))
(tcl-eval-assert
"cmdsub-y"
"6"
(tcl-var-get (run "set x 5\nset y [incr x]") "y"))
(tcl-eval-assert
"cmdsub-x"
"6"
(tcl-var-get (run "set x 5\nset y [incr x]") "x"))
(tcl-eval-assert
"multi-cmd"
"second"
(get (run "set x first\nset x second") :result))
(tcl-eval-assert "semi-x" "1" (tcl-var-get (run "set x 1; set y 2") "x"))
(tcl-eval-assert "semi-y" "2" (tcl-var-get (run "set x 1; set y 2") "y"))
(tcl-eval-assert
"braced-nosub"
"$x"
(tcl-var-get (run "set x 42\nset y {$x}") "y"))
(tcl-eval-assert
"concat-word"
"foobar"
(tcl-var-get (run "set x foo\nset y ${x}bar") "y"))
(tcl-eval-assert
"set-get"
"world"
(get (run "set x world\nset x") :result))
(tcl-eval-assert
"puts-channel"
"hello\n"
(get (run "puts stdout hello") :output))
(ok "if-true" (get (run "set x 0\nif {1} {set x 1}") :result) "1")
(ok "if-false" (get (run "set x 0\nif {0} {set x 1}") :result) "0")
(ok
"if-else-t"
(tcl-var-get (run "if {1} {set x yes} else {set x no}") "x")
"yes")
(ok
"if-else-f"
(tcl-var-get (run "if {0} {set x yes} else {set x no}") "x")
"no")
(ok
"if-cmp"
(tcl-var-get
(run "set x 5\nif {$x > 3} {set r big} else {set r small}")
"r")
"big")
(ok
"while"
(tcl-var-get
(run "set i 0\nset s 0\nwhile {$i < 5} {incr i\nincr s $i}")
"s")
"15")
(ok
"while-break"
(tcl-var-get
(run "set i 0\nwhile {1} {incr i\nif {$i == 3} {break}}")
"i")
"3")
(ok
"for"
(tcl-var-get
(run "set s 0\nfor {set i 1} {$i <= 5} {incr i} {incr s $i}")
"s")
"15")
(ok
"foreach"
(tcl-var-get (run "set s 0\nforeach x {1 2 3 4 5} {incr s $x}") "s")
"15")
(ok
"foreach-list"
(get (run "set acc \"\"\nforeach w {hello world} {append acc $w}") :result)
"helloworld")
(ok
"lappend"
(tcl-var-get (run "lappend lst a\nlappend lst b\nlappend lst c") "lst")
"a b c")
(ok?
"unset-gone"
(let
((i (run "set x 42\nunset x")))
(let
((frame (get i :frame)))
(nil? (get (get frame :locals) "x")))))
(ok "eval" (tcl-var-get (run "eval {set x hello}") "x") "hello")
(ok "expr-precedence" (get (run "expr {3 + 4 * 2}") :result) "11")
(ok "expr-parens" (get (run "expr {(3 + 4) * 2}") :result) "14")
(ok "expr-unary-minus" (get (run "expr {-5}") :result) "-5")
(ok "expr-unary-not-0" (get (run "expr {!0}") :result) "1")
(ok "expr-unary-not-1" (get (run "expr {!1}") :result) "0")
(ok "expr-power" (get (run "expr {2 ** 10}") :result) "1024")
(ok "expr-le" (get (run "expr {3 <= 3}") :result) "1")
(ok "expr-ge" (get (run "expr {4 >= 5}") :result) "0")
(ok "expr-and" (get (run "expr {1 && 1}") :result) "1")
(ok "expr-or" (get (run "expr {0 || 1}") :result) "1")
(ok "expr-var-sub" (get (run "set x 7\nexpr {$x * 3}") :result) "21")
(ok "expr-abs-neg" (get (run "expr {abs(-3)}") :result) "3")
(ok "expr-abs-pos" (get (run "expr {abs(5)}") :result) "5")
(ok "expr-pow-fn" (get (run "expr {pow(2, 8)}") :result) "256")
(ok "expr-max" (get (run "expr {max(3, 7)}") :result) "7")
(ok "expr-min" (get (run "expr {min(3, 7)}") :result) "3")
(ok "expr-sqrt-9" (get (run "expr {sqrt(9)}") :result) "3")
(ok "expr-sqrt-16" (get (run "expr {sqrt(16)}") :result) "4")
(ok "expr-mod" (get (run "expr {17 % 5}") :result) "2")
(ok "expr-nospace" (get (run "expr {3+4*2}") :result) "11")
(ok "expr-add" (get (run "expr {3 + 4}") :result) "7")
(ok "expr-cmp" (get (run "expr {5 > 3}") :result) "1")
(ok
"break-stops"
(tcl-var-get (run "set x 0\nwhile {1} {set x 1\nbreak\nset x 99}") "x")
"1")
(ok
"continue"
(tcl-var-get
(run
"set s 0\nfor {set i 1} {$i <= 5} {incr i} {if {$i == 3} {continue}\nincr s $i}")
"s")
"12")
(ok
"switch"
(tcl-var-get
(run "set x foo\nswitch $x {{foo} {set r yes} {bar} {set r no}}")
"r")
"yes")
(ok
"switch-default"
(tcl-var-get
(run "set x baz\nswitch $x {{foo} {set r yes} default {set r other}}")
"r")
"other")
(ok
"nested-if"
(tcl-var-get
(run
"set x 5\nif {$x > 10} {set r big} elseif {$x > 3} {set r mid} else {set r small}")
"r")
"mid")
(ok "str-length" (get (run "string length hello") :result) "5")
(ok "str-length-empty" (get (run "string length {}") :result) "0")
(ok "str-index" (get (run "string index hello 1") :result) "e")
(ok "str-index-oob" (get (run "string index hello 99") :result) "")
(ok "str-range" (get (run "string range hello 1 3") :result) "ell")
(ok "str-range-clamp" (get (run "string range hello 3 99") :result) "lo")
(ok "str-compare-eq" (get (run "string compare abc abc") :result) "0")
(ok "str-compare-lt" (get (run "string compare abc abd") :result) "-1")
(ok "str-compare-gt" (get (run "string compare b a") :result) "1")
(ok "str-match-star" (get (run "string match h*o hello") :result) "1")
(ok "str-match-q" (get (run "string match h?llo hello") :result) "1")
(ok "str-match-no" (get (run "string match h*x hello") :result) "0")
(ok "str-toupper" (get (run "string toupper hello") :result) "HELLO")
(ok "str-tolower" (get (run "string tolower WORLD") :result) "world")
(ok "str-trim" (get (run "string trim { hi }") :result) "hi")
(ok "str-trimleft" (get (run "string trimleft { hi }") :result) "hi ")
(ok "str-trimright" (get (run "string trimright { hi }") :result) " hi")
(ok "str-trim-chars" (get (run "string trim {xxhelloxx} x") :result) "hello")
(ok "str-map" (get (run "string map {a X b Y} {abc}") :result) "XYc")
(ok "str-repeat" (get (run "string repeat ab 3") :result) "ababab")
(ok "str-first" (get (run "string first ll hello") :result) "2")
(ok "str-first-miss" (get (run "string first z hello") :result) "-1")
(ok "str-last" (get (run "string last l hello") :result) "3")
(ok "str-is-int" (get (run "string is integer 42") :result) "1")
(ok "str-is-not-int" (get (run "string is integer foo") :result) "0")
(ok "str-is-alpha" (get (run "string is alpha hello") :result) "1")
(ok "str-is-alpha-no" (get (run "string is alpha hello1") :result) "0")
(ok "str-is-boolean" (get (run "string is boolean true") :result) "1")
(ok "str-cat" (get (run "string cat foo bar baz") :result) "foobarbaz")
; --- list command tests ---
(ok "list-simple" (get (run "list a b c") :result) "a b c")
(ok "list-brace-elem" (get (run "list {a b} c") :result) "{a b} c")
(ok "list-empty" (get (run "list") :result) "")
(ok "lindex-1" (get (run "lindex {a b c} 1") :result) "b")
(ok "lindex-0" (get (run "lindex {a b c} 0") :result) "a")
(ok "lindex-oob" (get (run "lindex {a b c} 5") :result) "")
(ok "lrange" (get (run "lrange {a b c d} 1 2") :result) "b c")
(ok "lrange-full" (get (run "lrange {a b c} 0 end") :result) "a b c")
(ok "llength" (get (run "llength {a b c}") :result) "3")
(ok "llength-empty" (get (run "llength {}") :result) "0")
(ok "lreverse" (get (run "lreverse {1 2 3}") :result) "3 2 1")
(ok "lsearch-found" (get (run "lsearch {a b c} b") :result) "1")
(ok "lsearch-missing" (get (run "lsearch {a b c} z") :result) "-1")
(ok "lsearch-exact" (get (run "lsearch -exact {foo bar} foo") :result) "0")
(ok "lsort-asc" (get (run "lsort {banana apple cherry}") :result) "apple banana cherry")
(ok "lsort-int" (get (run "lsort -integer {10 2 30 5}") :result) "2 5 10 30")
(ok "lsort-dec" (get (run "lsort -decreasing {c a b}") :result) "c b a")
(ok "lreplace" (get (run "lreplace {a b c d} 1 2 X Y") :result) "a X Y d")
(ok "linsert" (get (run "linsert {a b c} 1 X Y") :result) "a X Y b c")
(ok "linsert-end" (get (run "linsert {a b} end Z") :result) "a b Z")
(ok "concat" (get (run "concat {a b} {c d}") :result) "a b c d")
(ok "split-sep" (get (run "split {a:b:c} :") :result) "a b c")
(ok "split-ws" (get (run "split {a b c}") :result) "a b c")
(ok "join-sep" (get (run "join {a b c} -") :result) "a-b-c")
(ok "join-default" (get (run "join {a b c}") :result) "a b c")
(ok "list-var" (get (run "set L {x y z}\nllength $L") :result) "3")
; --- dict command tests ---
(ok "dict-create" (get (run "dict create a 1 b 2") :result) "a 1 b 2")
(ok "dict-create-empty" (get (run "dict create") :result) "")
(ok "dict-get" (get (run "dict get {a 1 b 2} a") :result) "1")
(ok "dict-get-b" (get (run "dict get {a 1 b 2} b") :result) "2")
(ok "dict-exists-yes" (get (run "dict exists {a 1 b 2} a") :result) "1")
(ok "dict-exists-no" (get (run "dict exists {a 1 b 2} z") :result) "0")
(ok "dict-set-new" (get (run "set d {}\ndict set d x 42") :result) "x 42")
(ok "dict-set-update" (get (run "set d {a 1 b 2}\ndict set d a 99") :result) "a 99 b 2")
(ok "dict-set-stored" (tcl-var-get (run "set d {a 1}\ndict set d b 2") "d") "a 1 b 2")
(ok "dict-unset" (get (run "set d {a 1 b 2}\ndict unset d a") :result) "b 2")
(ok "dict-unset-stored" (tcl-var-get (run "set d {a 1 b 2}\ndict unset d a") "d") "b 2")
(ok "dict-keys" (get (run "dict keys {a 1 b 2}") :result) "a b")
(ok "dict-keys-pattern" (get (run "dict keys {abc 1 abd 2 xyz 3} ab*") :result) "abc abd")
(ok "dict-values" (get (run "dict values {a 1 b 2}") :result) "1 2")
(ok "dict-size" (get (run "dict size {a 1 b 2 c 3}") :result) "3")
(ok "dict-size-empty" (get (run "dict size {}") :result) "0")
(ok "dict-for" (tcl-var-get (run "set acc {}\ndict for {k v} {a 1 b 2} {append acc $k$v}") "acc") "a1b2")
(ok "dict-merge-disjoint" (get (run "dict merge {a 1} {b 2}") :result) "a 1 b 2")
(ok "dict-merge-overlap" (get (run "dict merge {a 1 b 2} {b 99}") :result) "a 1 b 99")
(ok "dict-incr-existing" (get (run "set d {x 5}\ndict incr d x") :result) "x 6")
(ok "dict-incr-delta" (get (run "set d {x 5}\ndict incr d x 3") :result) "x 8")
(ok "dict-incr-missing" (get (run "set d {}\ndict incr d n") :result) "n 1")
(ok "dict-append" (get (run "set d {x hello}\ndict append d x _hi") :result) "x hello_hi")
(ok "dict-append-new" (get (run "set d {}\ndict append d k val") :result) "k val")
; --- proc tests ---
(ok "proc-basic" (get (run "proc add {a b} {expr {$a + $b}}\nadd 3 4") :result) "7")
(ok "proc-return" (get (run "proc greet {name} {set msg \"hi $name\"\nreturn $msg}\ngreet World") :result) "hi World")
(ok "proc-factorial" (get (run "proc factorial {n} {if {$n <= 1} {return 1}\nexpr {$n * [factorial [expr {$n - 1}]]}}\nfactorial 5") :result) "120")
(ok "proc-args" (get (run "proc sum args {set t 0\nforeach x $args {incr t $x}\nreturn $t}\nsum 1 2 3 4") :result) "10")
(ok "proc-isolated" (get (run "set x outer\nproc p {} {set x inner\nreturn $x}\np") :result) "inner")
(ok "proc-caller-unchanged" (tcl-var-get (run "set x outer\nproc p {} {set x inner\nreturn $x}\np\nset dummy 1") "x") "outer")
(ok "proc-output" (get (run "proc hello {} {puts -nonewline hi}\nhello") :output) "hi")
; --- upvar tests ---
(ok "upvar-incr" (tcl-var-get (run "proc incr2 {varname} {upvar 1 $varname v\nincr v}\nset counter 10\nincr2 counter\nset counter") "counter") "11")
(ok "upvar-double" (tcl-var-get (run "proc double-it {varname} {upvar 1 $varname x\nset x [expr {$x * 2}]}\nset val 5\ndouble-it val\nset val") "val") "10")
(ok "upvar-result" (get (run "proc double-it {varname} {upvar 1 $varname x\nset x [expr {$x * 2}]}\nset val 5\ndouble-it val\nset val") :result) "10")
; --- uplevel tests ---
(ok "uplevel-set" (tcl-var-get (run "proc setvar {name val} {uplevel 1 \"set $name $val\"}\nsetvar x 99\nset x") "x") "99")
(ok "uplevel-get" (get (run "proc getvar {name} {uplevel 1 \"set $name\"}\nset y 77\ngetvar y") :result) "77")
; --- global tests ---
(ok "global-read" (get (run "set g 100\nproc getg {} {global g\nreturn $g}\ngetg") :result) "100")
(ok "global-write" (tcl-var-get (run "set g 0\nproc bumping {} {global g\nincr g}\nbumping\nbumping\nset g") "g") "2")
; --- info tests ---
(ok "info-level-0" (get (run "info level") :result) "0")
(ok "info-level-proc" (get (run "proc p {} {info level}\np") :result) "1")
(ok "info-procs" (let ((r (get (run "proc myfn {} {}\ninfo procs") :result))) (contains? (tcl-list-split r) "myfn")) true)
(ok "info-args" (get (run "proc add {a b} {expr {$a+$b}}\ninfo args add") :result) "a b")
(ok "info-commands-has-set" (let ((r (get (run "info commands") :result))) (contains? (tcl-list-split r) "set")) true)
; --- classic programs ---
(ok
"classic-for-each-line"
(get
(run "proc for-each-line {var lines body} {\n foreach item $lines {\n uplevel 1 [list set $var $item]\n uplevel 1 $body\n }\n}\nset total 0\nfor-each-line line {hello world foo} {\n incr total [string length $line]\n}\nset total")
:result)
"13")
(ok
"classic-assert"
(get
(run "proc assert {expr_str} {\n set result [uplevel 1 [list expr $expr_str]]\n if {!$result} {\n error \"Assertion failed: $expr_str\"\n }\n}\nset x 42\nassert {$x == 42}\nassert {$x > 0}\nset x 10\nassert {$x < 100}\nset x")
:result)
"10")
(ok
"classic-with-temp-var"
(get
(run "proc with-temp-var {varname tempval body} {\n upvar 1 $varname v\n set saved $v\n set v $tempval\n uplevel 1 $body\n set v $saved\n}\nset x 100\nwith-temp-var x 999 {\n set captured $x\n}\nlist $x $captured")
:result)
"100 999")
(dict
"passed"
tcl-eval-pass
"failed"
tcl-eval-fail
"failures"
tcl-eval-failures)))

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; Tcl-on-SX idiom corpus (Phase 6)
; Classic Tcl idioms covering lists, dicts, procs, patterns
(define tcl-idiom-pass 0)
(define tcl-idiom-fail 0)
(define tcl-idiom-failures (list))
(define
tcl-idiom-assert
(fn
(label expected actual)
(if
(equal? expected actual)
(set! tcl-idiom-pass (+ tcl-idiom-pass 1))
(begin
(set! tcl-idiom-fail (+ tcl-idiom-fail 1))
(append!
tcl-idiom-failures
(str label ": expected=" (str expected) " got=" (str actual)))))))
(define
tcl-run-idiom-tests
(fn
()
(set! tcl-idiom-pass 0)
(set! tcl-idiom-fail 0)
(set! tcl-idiom-failures (list))
(define interp (fn () (make-default-tcl-interp)))
(define run (fn (src) (tcl-eval-string (interp) src)))
(define
ok
(fn (label actual expected) (tcl-idiom-assert label expected actual)))
; 1. lmap idiom: accumulate mapped values with foreach+lappend
(ok "idiom-lmap"
(get
(run "set result {}\nforeach x {1 2 3} { lappend result [expr {$x * $x}] }\nset result")
:result)
"1 4 9")
; 2. Recursive list flatten
(ok "idiom-flatten"
(get
(run
"proc flatten {lst} { set out {}\n foreach item $lst {\n if {[llength $item] > 1} {\n foreach sub [flatten $item] { lappend out $sub }\n } else {\n lappend out $item\n }\n }\n return $out\n}\nflatten {1 {2 3} {4 {5 6}}}")
:result)
"1 2 3 4 5 6")
; 3. String builder accumulator
(ok "idiom-string-builder"
(get
(run "set buf \"\"\nforeach w {Hello World Tcl} { append buf $w \" \" }\nstring trimright $buf")
:result)
"Hello World Tcl")
; 4. Default parameter via info exists
(ok "idiom-default-param"
(get
(run "if {![info exists x]} { set x 42 }\nset x")
:result)
"42")
; 5. Association list lookup (parallel key/value lists)
(ok "idiom-alist-lookup"
(get
(run
"set keys {a b c}\nset vals {10 20 30}\nset idx [lsearch $keys b]\nlindex $vals $idx")
:result)
"20")
; 6. Proc with optional args via args
(ok "idiom-optional-args"
(get
(run
"proc greet {name args} {\n set greeting \"Hello\"\n if {[llength $args] > 0} { set greeting [lindex $args 0] }\n return \"$greeting $name\"\n}\ngreet World Hi")
:result)
"Hi World")
; 7. Builder pattern: dict create from args
(ok "idiom-dict-builder"
(get
(run
"proc build-dict {args} { dict create {*}$args }\ndict get [build-dict name Alice age 30] name")
:result)
"Alice")
; 8. Loop with index using array
(ok "idiom-loop-with-index"
(get
(run
"set i 0\nforeach x {a b c} { set arr($i) $x; incr i }\nset arr(1)")
:result)
"b")
; 9. String reverse via split+lreverse+join
(ok "idiom-string-reverse"
(get
(run
"set s hello\nset chars [split $s \"\"]\nset rev [lreverse $chars]\njoin $rev \"\"")
:result)
"olleh")
; 10. Number to padded string
(ok "idiom-number-format"
(get (run "format \"%05d\" 42") :result)
"00042")
; 11. Dict comprehension pattern
(ok "idiom-dict-comprehension"
(get
(run
"set squares {}\nforeach n {1 2 3 4} { dict set squares $n [expr {$n * $n}] }\ndict get $squares 3")
:result)
"9")
; 12. Stack ADT using list: push/pop
(ok "idiom-stack"
(get
(run
"proc stack-push {stackvar val} { upvar $stackvar s; lappend s $val }\nproc stack-pop {stackvar} { upvar $stackvar s; set val [lindex $s end]; set s [lrange $s 0 end-1]; return $val }\nset stk {}\nstack-push stk 10\nstack-push stk 20\nstack-push stk 30\nstack-pop stk")
:result)
"30")
; 13. Queue ADT using list: enqueue/dequeue
(ok "idiom-queue"
(get
(run
"proc q-enq {qvar val} { upvar $qvar q; lappend q $val }\nproc q-deq {qvar} { upvar $qvar q; set val [lindex $q 0]; set q [lrange $q 1 end]; return $val }\nset q {}\nq-enq q alpha\nq-enq q beta\nq-enq q gamma\nq-deq q")
:result)
"alpha")
; 14. Pipeline via proc chaining
(ok "idiom-pipeline"
(get
(run
"proc double {x} { expr {$x * 2} }\nproc add1 {x} { expr {$x + 1} }\nproc pipeline {val procs} { foreach p $procs { set val [$p $val] }; return $val }\npipeline 5 {double add1 double}")
:result)
"22")
; 15. Memoize pattern using dict (simple cache, not recursive)
(ok "idiom-memoize"
(get
(run
"set cache {}\nproc cached-square {n} { global cache\n if {[dict exists $cache $n]} { return [dict get $cache $n] }\n set r [expr {$n * $n}]\n dict set cache $n $r\n return $r\n}\nset a [cached-square 7]\nset b [cached-square 7]\nset c [cached-square 8]\nexpr {$a == $b && $c == 64}")
:result)
"1")
; 16. Simple expression evaluator in Tcl (recursive descent)
(ok "idiom-recursive-eval"
(get
(run
"proc calc {expr} { return [::tcl::mathop::+ 0 [expr $expr]] }\nexpr {3 + 4 * 2}")
:result)
"11")
; 17. Apply proc to each pair in a dict
(ok "idiom-dict-for"
(get
(run
"set d [dict create a 1 b 2 c 3]\nset total 0\ndict for {k v} $d { incr total $v }\nset total")
:result)
"6")
; 18. Find max in list
(ok "idiom-find-max"
(get
(run
"proc list-max {lst} {\n set m [lindex $lst 0]\n foreach x $lst { if {$x > $m} { set m $x } }\n return $m\n}\nlist-max {3 1 4 1 5 9 2 6}")
:result)
"9")
; 19. Filter list by predicate
(ok "idiom-filter-list"
(get
(run
"proc list-filter {lst pred} {\n set out {}\n foreach x $lst { if {[$pred $x]} { lappend out $x } }\n return $out\n}\nproc is-even {n} { expr {$n % 2 == 0} }\nlist-filter {1 2 3 4 5 6} is-even")
:result)
"2 4 6")
; 20. Zip two lists
(ok "idiom-zip"
(get
(run
"proc zip {a b} {\n set out {}\n set n [llength $a]\n for {set i 0} {$i < $n} {incr i} {\n lappend out [lindex $a $i]\n lappend out [lindex $b $i]\n }\n return $out\n}\nzip {1 2 3} {a b c}")
:result)
"1 a 2 b 3 c")
(dict
"passed"
tcl-idiom-pass
"failed"
tcl-idiom-fail
"failures"
tcl-idiom-failures)))

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; Tcl-on-SX namespace tests (Phase 5)
(define tcl-ns-pass 0)
(define tcl-ns-fail 0)
(define tcl-ns-failures (list))
(define
tcl-ns-assert
(fn
(label expected actual)
(if
(equal? expected actual)
(set! tcl-ns-pass (+ tcl-ns-pass 1))
(begin
(set! tcl-ns-fail (+ tcl-ns-fail 1))
(append!
tcl-ns-failures
(str label ": expected=" (str expected) " got=" (str actual)))))))
(define
tcl-run-namespace-tests
(fn
()
(set! tcl-ns-pass 0)
(set! tcl-ns-fail 0)
(set! tcl-ns-failures (list))
(define interp (fn () (make-default-tcl-interp)))
(define run (fn (src) (tcl-eval-string (interp) src)))
(define
ok
(fn (label actual expected) (tcl-ns-assert label expected actual)))
(define
ok?
(fn (label condition) (tcl-ns-assert label true condition)))
; --- namespace current ---
(ok "ns-current-global"
(get (run "namespace current") :result)
"::")
; --- namespace eval defines proc ---
(ok "ns-eval-proc-result"
(get (run "namespace eval myns { proc foo {} { return bar } }\nmyns::foo") :result)
"bar")
; --- fully qualified call ---
(ok "ns-qualified-call"
(get (run "namespace eval myns { proc greet {name} { return \"hello $name\" } }\n::myns::greet World") :result)
"hello World")
; --- namespace current inside eval ---
(ok "ns-current-inside"
(get (run "namespace eval myns { namespace current }") :result)
"::myns")
; --- namespace current restored after eval ---
(ok "ns-current-restored"
(get (run "namespace eval myns { set x 1 }\nnamespace current") :result)
"::")
; --- relative call from within namespace ---
(ok "ns-relative-call"
(get (run "namespace eval math {\n proc double {x} { expr {$x * 2} }\n proc quad {x} { double [double $x] }\n}\nmath::quad 3") :result)
"12")
; --- proc defined as qualified name inside namespace eval ---
(ok "ns-qualified-proc-name"
(get (run "namespace eval utils { proc ::utils::helper {x} { return $x } }\n::utils::helper done") :result)
"done")
; --- namespace exists ---
(ok "ns-exists-yes"
(get (run "namespace eval testns { proc p {} {} }\nnamespace exists testns") :result)
"1")
(ok "ns-exists-no"
(get (run "namespace exists nosuchns") :result)
"0")
(ok "ns-exists-global"
(get (run "proc top {} {}\nnamespace exists ::") :result)
"1")
; --- namespace delete ---
(ok "ns-delete-removes"
(get (run "namespace eval todel { proc pp {} { return yes } }\nnamespace delete todel\nnamespace exists todel") :result)
"0")
; --- namespace which ---
(ok "ns-which-found"
(get (run "namespace eval wns { proc wfn {} {} }\nnamespace which -command wns::wfn") :result)
"::wns::wfn")
(ok "ns-which-not-found"
(get (run "namespace which -command nosuchfn") :result)
"")
; --- namespace ensemble create auto-map ---
(ok "ns-ensemble-add"
(get (run "namespace eval mymath {\n proc add {a b} { expr {$a + $b} }\n proc mul {a b} { expr {$a * $b} }\n namespace ensemble create\n}\nmymath add 3 4") :result)
"7")
(ok "ns-ensemble-mul"
(get (run "namespace eval mymath {\n proc add {a b} { expr {$a + $b} }\n proc mul {a b} { expr {$a * $b} }\n namespace ensemble create\n}\nmymath mul 3 4") :result)
"12")
; --- namespace ensemble with -map ---
(ok "ns-ensemble-map"
(get (run "namespace eval ops {\n proc do-add {a b} { expr {$a + $b} }\n namespace ensemble create -map {plus ::ops::do-add}\n}\nops plus 5 6") :result)
"11")
; --- proc inside namespace eval with args ---
(ok "ns-proc-args"
(get (run "namespace eval calc {\n proc sum {a b c} { expr {$a + $b + $c} }\n}\ncalc::sum 1 2 3") :result)
"6")
; --- info procs inside namespace ---
(ok? "ns-info-procs-in-ns"
(let
((r (get (run "namespace eval foo { proc bar {} {} }\nnamespace eval foo { info procs }") :result)))
(contains? (tcl-list-split r) "bar")))
; --- variable inside namespace eval ---
(ok "ns-variable-inside"
(get (run "namespace eval storage {\n variable count 0\n proc bump {} { global count\n incr count\n return $count }\n}\n::storage::bump\n::storage::bump") :result)
"2")
; --- nested namespaces ---
(ok "ns-nested"
(get (run "namespace eval outer {\n namespace eval inner {\n proc greet {} { return nested }\n }\n}\n::outer::inner::greet") :result)
"nested")
; --- namespace eval accumulates procs ---
(ok "ns-eval-accumulate"
(get (run "namespace eval acc { proc f1 {} { return one } }\nnamespace eval acc { proc f2 {} { return two } }\nacc::f1") :result)
"one")
(ok "ns-eval-accumulate-2"
(get (run "namespace eval acc { proc f1 {} { return one } }\nnamespace eval acc { proc f2 {} { return two } }\nacc::f2") :result)
"two")
(dict
"passed"
tcl-ns-pass
"failed"
tcl-ns-fail
"failures"
tcl-ns-failures)))

186
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(define tcl-parse-pass 0)
(define tcl-parse-fail 0)
(define tcl-parse-failures (list))
(define tcl-assert
(fn (label expected actual)
(if (= expected actual)
(set! tcl-parse-pass (+ tcl-parse-pass 1))
(begin
(set! tcl-parse-fail (+ tcl-parse-fail 1))
(append! tcl-parse-failures
(str label ": expected=" (str expected) " got=" (str actual)))))))
(define tcl-first-cmd
(fn (src) (nth (tcl-tokenize src) 0)))
(define tcl-cmd-words
(fn (src) (get (tcl-first-cmd src) :words)))
(define tcl-word
(fn (src wi) (nth (tcl-cmd-words src) wi)))
(define tcl-parts
(fn (src wi) (get (tcl-word src wi) :parts)))
(define tcl-part
(fn (src wi pi) (nth (tcl-parts src wi) pi)))
(define tcl-run-parse-tests
(fn ()
(set! tcl-parse-pass 0)
(set! tcl-parse-fail 0)
(set! tcl-parse-failures (list))
; empty / whitespace-only
(tcl-assert "empty" 0 (len (tcl-tokenize "")))
(tcl-assert "ws-only" 0 (len (tcl-tokenize " ")))
(tcl-assert "nl-only" 0 (len (tcl-tokenize "\n\n")))
; single command word count
(tcl-assert "1word" 1 (len (tcl-cmd-words "set")))
(tcl-assert "3words" 3 (len (tcl-cmd-words "set x 1")))
(tcl-assert "4words" 4 (len (tcl-cmd-words "set a b c")))
; word type — bare word is compound
(tcl-assert "bare-type" "compound" (get (tcl-word "set x 1" 0) :type))
(tcl-assert "bare-quoted" false (get (tcl-word "set x 1" 0) :quoted))
(tcl-assert "bare-part-type" "text" (get (tcl-part "set x 1" 0 0) :type))
(tcl-assert "bare-part-val" "set" (get (tcl-part "set x 1" 0 0) :value))
(tcl-assert "bare-part2-val" "x" (get (tcl-part "set x 1" 1 0) :value))
(tcl-assert "bare-part3-val" "1" (get (tcl-part "set x 1" 2 0) :value))
; multiple commands
(tcl-assert "semi-sep" 2 (len (tcl-tokenize "set x 1; set y 2")))
(tcl-assert "nl-sep" 2 (len (tcl-tokenize "set x 1\nset y 2")))
(tcl-assert "multi-nl" 3 (len (tcl-tokenize "a\nb\nc")))
; comments
(tcl-assert "comment-only" 0 (len (tcl-tokenize "# comment")))
(tcl-assert "comment-nl" 0 (len (tcl-tokenize "# comment\n")))
(tcl-assert "comment-then-cmd" 1 (len (tcl-tokenize "# comment\nset x 1")))
(tcl-assert "semi-then-comment" 1 (len (tcl-tokenize "set x 1; # comment")))
; brace-quoted words
(tcl-assert "brace-type" "braced" (get (tcl-word "{hello}" 0) :type))
(tcl-assert "brace-value" "hello" (get (tcl-word "{hello}" 0) :value))
(tcl-assert "brace-spaces" "hello world" (get (tcl-word "{hello world}" 0) :value))
(tcl-assert "brace-nested" "a {b} c" (get (tcl-word "{a {b} c}" 0) :value))
(tcl-assert "brace-no-var-sub" "hello $x" (get (tcl-word "{hello $x}" 0) :value))
(tcl-assert "brace-no-cmd-sub" "[expr 1]" (get (tcl-word "{[expr 1]}" 0) :value))
; double-quoted words
(tcl-assert "dq-type" "compound" (get (tcl-word "\"hello\"" 0) :type))
(tcl-assert "dq-quoted" true (get (tcl-word "\"hello\"" 0) :quoted))
(tcl-assert "dq-literal" "hello" (get (tcl-part "\"hello\"" 0 0) :value))
; variable substitution in bare word
(tcl-assert "var-type" "var" (get (tcl-part "$x" 0 0) :type))
(tcl-assert "var-name" "x" (get (tcl-part "$x" 0 0) :name))
(tcl-assert "var-long" "long_name" (get (tcl-part "$long_name" 0 0) :name))
; ${name} form
(tcl-assert "var-brace-type" "var" (get (tcl-part "${x}" 0 0) :type))
(tcl-assert "var-brace-name" "x" (get (tcl-part "${x}" 0 0) :name))
; array variable substitution
(tcl-assert "arr-type" "var-arr" (get (tcl-part "$arr(key)" 0 0) :type))
(tcl-assert "arr-name" "arr" (get (tcl-part "$arr(key)" 0 0) :name))
(tcl-assert "arr-key-len" 1 (len (get (tcl-part "$arr(key)" 0 0) :key)))
(tcl-assert "arr-key-text" "key"
(get (nth (get (tcl-part "$arr(key)" 0 0) :key) 0) :value))
; command substitution
(tcl-assert "cmd-type" "cmd" (get (tcl-part "[expr 1+1]" 0 0) :type))
(tcl-assert "cmd-src" "expr 1+1" (get (tcl-part "[expr 1+1]" 0 0) :src))
; nested command substitution
(tcl-assert "cmd-nested-src" "expr [string length x]"
(get (tcl-part "[expr [string length x]]" 0 0) :src))
; backslash substitution in double-quoted word
(let ((ps (tcl-parts "\"a\\nb\"" 0)))
(begin
(tcl-assert "bs-n-part0" "a" (get (nth ps 0) :value))
(tcl-assert "bs-n-part1" "\n" (get (nth ps 1) :value))
(tcl-assert "bs-n-part2" "b" (get (nth ps 2) :value))))
(let ((ps (tcl-parts "\"a\\tb\"" 0)))
(tcl-assert "bs-t-part1" "\t" (get (nth ps 1) :value)))
(let ((ps (tcl-parts "\"a\\\\b\"" 0)))
(tcl-assert "bs-bs-part1" "\\" (get (nth ps 1) :value)))
; mixed word: text + var + text in double-quoted
(let ((ps (tcl-parts "\"hello $name!\"" 0)))
(begin
(tcl-assert "mixed-text0" "hello " (get (nth ps 0) :value))
(tcl-assert "mixed-var1-type" "var" (get (nth ps 1) :type))
(tcl-assert "mixed-var1-name" "name" (get (nth ps 1) :name))
(tcl-assert "mixed-text2" "!" (get (nth ps 2) :value))))
; {*} expansion
(tcl-assert "expand-type" "expand" (get (tcl-word "{*}$list" 0) :type))
; line continuation between words
(tcl-assert "cont-words" 3 (len (tcl-cmd-words "set x \\\n 1")))
; continuation — third command word is correct
(tcl-assert "cont-word2-val" "1"
(get (tcl-part "set x \\\n 1" 2 0) :value))
; --- parser helpers ---
; tcl-parse is an alias for tcl-tokenize
(tcl-assert "parse-cmd-count" 1 (len (tcl-parse "set x 1")))
(tcl-assert "parse-2cmds" 2 (len (tcl-parse "set x 1; set y 2")))
; tcl-cmd-len
(tcl-assert "cmd-len-3" 3 (tcl-cmd-len (nth (tcl-parse "set x 1") 0)))
(tcl-assert "cmd-len-1" 1 (tcl-cmd-len (nth (tcl-parse "puts") 0)))
; tcl-word-simple? on braced word
(tcl-assert "simple-braced" true
(tcl-word-simple? (nth (get (nth (tcl-parse "{hello}") 0) :words) 0)))
; tcl-word-simple? on bare word with no subs
(tcl-assert "simple-bare" true
(tcl-word-simple? (nth (get (nth (tcl-parse "hello") 0) :words) 0)))
; tcl-word-simple? on word containing a var sub — false
(tcl-assert "simple-var-false" false
(tcl-word-simple? (nth (get (nth (tcl-parse "$x") 0) :words) 0)))
; tcl-word-simple? on word containing a cmd sub — false
(tcl-assert "simple-cmd-false" false
(tcl-word-simple? (nth (get (nth (tcl-parse "[expr 1]") 0) :words) 0)))
; tcl-word-literal on braced word
(tcl-assert "lit-braced" "hello world"
(tcl-word-literal (nth (get (nth (tcl-parse "{hello world}") 0) :words) 0)))
; tcl-word-literal on bare word
(tcl-assert "lit-bare" "hello"
(tcl-word-literal (nth (get (nth (tcl-parse "hello") 0) :words) 0)))
; tcl-word-literal on word with var sub returns nil
(tcl-assert "lit-var-nil" nil
(tcl-word-literal (nth (get (nth (tcl-parse "$x") 0) :words) 0)))
; tcl-nth-literal
(tcl-assert "nth-lit-0" "set"
(tcl-nth-literal (nth (tcl-parse "set x 1") 0) 0))
(tcl-assert "nth-lit-1" "x"
(tcl-nth-literal (nth (tcl-parse "set x 1") 0) 1))
(tcl-assert "nth-lit-2" "1"
(tcl-nth-literal (nth (tcl-parse "set x 1") 0) 2))
; tcl-nth-literal returns nil when word has subs
(tcl-assert "nth-lit-nil" nil
(tcl-nth-literal (nth (tcl-parse "set x $y") 0) 2))
(dict
"passed" tcl-parse-pass
"failed" tcl-parse-fail
"failures" tcl-parse-failures)))

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# expected: 10
proc assert {expr_str} {
set result [uplevel 1 [list expr $expr_str]]
if {!$result} {
error "Assertion failed: $expr_str"
}
}
set x 42
assert {$x == 42}
assert {$x > 0}
set x 10
assert {$x < 100}
set x

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# expected: done
# Cooperative scheduler demo using coroutines (generator style)
# coroutine eagerly collects all yields; invoking the coroutine name pops values
proc counter {n max} {
while {$n < $max} {
yield $n
incr n
}
yield done
}
coroutine gen1 counter 0 3
# gen1 yields: 0 1 2 done
set out {}
for {set i 0} {$i < 4} {incr i} {
lappend out [gen1]
}
# last val is "done"
lindex $out 3

14
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# expected: 13
proc for-each-line {var lines body} {
foreach item $lines {
uplevel 1 [list set $var $item]
uplevel 1 $body
}
}
# Usage: accumulate lengths of each "line"
set total 0
for-each-line line {hello world foo} {
incr total [string length $line]
}
set total

14
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# expected: 100 999
proc with-temp-var {varname tempval body} {
upvar 1 $varname v
set saved $v
set v $tempval
uplevel 1 $body
set v $saved
}
set x 100
with-temp-var x 999 {
set captured $x
}
list $x $captured

308
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(define tcl-ws? (fn (c) (or (= c " ") (= c "\t") (= c "\r"))))
(define tcl-alpha?
(fn (c)
(and
(not (= c nil))
(or (and (>= c "a") (<= c "z")) (and (>= c "A") (<= c "Z"))))))
(define tcl-digit?
(fn (c) (and (not (= c nil)) (>= c "0") (<= c "9"))))
(define tcl-ident-start?
(fn (c) (or (tcl-alpha? c) (= c "_"))))
(define tcl-ident-char?
(fn (c) (or (tcl-ident-start? c) (tcl-digit? c))))
(define tcl-tokenize
(fn (src)
(let ((pos 0) (src-len (len src)) (commands (list)))
(define char-at
(fn (off)
(if (< (+ pos off) src-len) (nth src (+ pos off)) nil)))
(define cur (fn () (char-at 0)))
(define advance! (fn (n) (set! pos (+ pos n))))
(define skip-ws!
(fn ()
(when (tcl-ws? (cur))
(begin (advance! 1) (skip-ws!)))))
(define skip-to-eol!
(fn ()
(when (and (< pos src-len) (not (= (cur) "\n")))
(begin (advance! 1) (skip-to-eol!)))))
(define skip-brace-content!
(fn (d)
(when (and (< pos src-len) (> d 0))
(cond
((= (cur) "{") (begin (advance! 1) (skip-brace-content! (+ d 1))))
((= (cur) "}") (begin (advance! 1) (skip-brace-content! (- d 1))))
(else (begin (advance! 1) (skip-brace-content! d)))))))
(define skip-dquote-content!
(fn ()
(when (and (< pos src-len) (not (= (cur) "\"")))
(begin
(when (= (cur) "\\") (advance! 1))
(when (< pos src-len) (advance! 1))
(skip-dquote-content!)))))
(define parse-bs
(fn ()
(advance! 1)
(let ((c (cur)))
(cond
((= c nil) "\\")
((= c "n") (begin (advance! 1) "\n"))
((= c "t") (begin (advance! 1) "\t"))
((= c "r") (begin (advance! 1) "\r"))
((= c "\\") (begin (advance! 1) "\\"))
((= c "[") (begin (advance! 1) "["))
((= c "]") (begin (advance! 1) "]"))
((= c "{") (begin (advance! 1) "{"))
((= c "}") (begin (advance! 1) "}"))
((= c "$") (begin (advance! 1) "$"))
((= c ";") (begin (advance! 1) ";"))
((= c "\"") (begin (advance! 1) "\""))
((= c "'") (begin (advance! 1) "'"))
((= c " ") (begin (advance! 1) " "))
((= c "\n")
(begin
(advance! 1)
(skip-ws!)
" "))
(else (begin (advance! 1) (str "\\" c)))))))
(define parse-cmd-sub
(fn ()
(advance! 1)
(let ((start pos) (depth 1))
(define scan!
(fn ()
(when (and (< pos src-len) (> depth 0))
(cond
((= (cur) "[")
(begin (set! depth (+ depth 1)) (advance! 1) (scan!)))
((= (cur) "]")
(begin
(set! depth (- depth 1))
(when (> depth 0) (advance! 1))
(scan!)))
((= (cur) "{")
(begin (advance! 1) (skip-brace-content! 1) (scan!)))
((= (cur) "\"")
(begin
(advance! 1)
(skip-dquote-content!)
(when (= (cur) "\"") (advance! 1))
(scan!)))
((= (cur) "\\")
(begin (advance! 1) (when (< pos src-len) (advance! 1)) (scan!)))
(else (begin (advance! 1) (scan!)))))))
(scan!)
(let ((src-text (slice src start pos)))
(begin
(when (= (cur) "]") (advance! 1))
{:type "cmd" :src src-text})))))
(define scan-name!
(fn ()
(when (and (< pos src-len) (not (= (cur) "}")))
(begin (advance! 1) (scan-name!)))))
(define scan-ns-name!
(fn ()
(cond
((tcl-ident-char? (cur))
(begin (advance! 1) (scan-ns-name!)))
((and (= (cur) ":") (= (char-at 1) ":"))
(begin (advance! 2) (scan-ns-name!)))
(else nil))))
(define scan-klit!
(fn ()
(when (and (< pos src-len)
(not (= (cur) ")"))
(not (= (cur) "$"))
(not (= (cur) "["))
(not (= (cur) "\\")))
(begin (advance! 1) (scan-klit!)))))
(define scan-key!
(fn (kp)
(when (and (< pos src-len) (not (= (cur) ")")))
(cond
((= (cur) "$")
(begin (append! kp (parse-var-sub)) (scan-key! kp)))
((= (cur) "[")
(begin (append! kp (parse-cmd-sub)) (scan-key! kp)))
((= (cur) "\\")
(begin
(append! kp {:type "text" :value (parse-bs)})
(scan-key! kp)))
(else
(let ((kstart pos))
(begin
(scan-klit!)
(append! kp {:type "text" :value (slice src kstart pos)})
(scan-key! kp))))))))
(define parse-var-sub
(fn ()
(advance! 1)
(cond
((= (cur) "{")
(begin
(advance! 1)
(let ((start pos))
(begin
(scan-name!)
(let ((name (slice src start pos)))
(begin
(when (= (cur) "}") (advance! 1))
{:type "var" :name name}))))))
((tcl-ident-start? (cur))
(let ((start pos))
(begin
(scan-ns-name!)
(let ((name (slice src start pos)))
(if (= (cur) "(")
(begin
(advance! 1)
(let ((key-parts (list)))
(begin
(scan-key! key-parts)
(when (= (cur) ")") (advance! 1))
{:type "var-arr" :name name :key key-parts})))
{:type "var" :name name})))))
(else {:type "text" :value "$"}))))
(define scan-lit!
(fn (stop?)
(when (and (< pos src-len)
(not (stop? (cur)))
(not (= (cur) "$"))
(not (= (cur) "["))
(not (= (cur) "\\")))
(begin (advance! 1) (scan-lit! stop?)))))
(define parse-word-parts!
(fn (parts stop?)
(when (and (< pos src-len) (not (stop? (cur))))
(cond
((= (cur) "$")
(begin (append! parts (parse-var-sub)) (parse-word-parts! parts stop?)))
((= (cur) "[")
(begin (append! parts (parse-cmd-sub)) (parse-word-parts! parts stop?)))
((= (cur) "\\")
(begin
(append! parts {:type "text" :value (parse-bs)})
(parse-word-parts! parts stop?)))
(else
(let ((start pos))
(begin
(scan-lit! stop?)
(when (> pos start)
(append! parts {:type "text" :value (slice src start pos)}))
(parse-word-parts! parts stop?))))))))
(define parse-brace-word
(fn ()
(advance! 1)
(let ((depth 1) (start pos))
(define scan!
(fn ()
(when (and (< pos src-len) (> depth 0))
(cond
((= (cur) "{")
(begin (set! depth (+ depth 1)) (advance! 1) (scan!)))
((= (cur) "}")
(begin (set! depth (- depth 1)) (when (> depth 0) (advance! 1)) (scan!)))
(else (begin (advance! 1) (scan!)))))))
(scan!)
(let ((value (slice src start pos)))
(begin
(when (= (cur) "}") (advance! 1))
{:type "braced" :value value})))))
(define parse-dquote-word
(fn ()
(advance! 1)
(let ((parts (list)))
(begin
(parse-word-parts! parts (fn (c) (or (= c "\"") (= c nil))))
(when (= (cur) "\"") (advance! 1))
{:type "compound" :parts parts :quoted true}))))
(define parse-bare-word
(fn ()
(let ((parts (list)))
(begin
(parse-word-parts!
parts
(fn (c) (or (tcl-ws? c) (= c "\n") (= c ";") (= c nil))))
{:type "compound" :parts parts :quoted false}))))
(define parse-word-no-expand
(fn ()
(cond
((= (cur) "{") (parse-brace-word))
((= (cur) "\"") (parse-dquote-word))
(else (parse-bare-word)))))
(define parse-word
(fn ()
(cond
((and (= (cur) "{") (= (char-at 1) "*") (= (char-at 2) "}"))
(begin
(advance! 3)
{:type "expand" :word (parse-word-no-expand)}))
((= (cur) "{") (parse-brace-word))
((= (cur) "\"") (parse-dquote-word))
(else (parse-bare-word)))))
(define parse-words!
(fn (words)
(skip-ws!)
(cond
((or (= (cur) nil) (= (cur) "\n") (= (cur) ";")) nil)
((and (= (cur) "\\") (= (char-at 1) "\n"))
(begin (advance! 2) (skip-ws!) (parse-words! words)))
(else
(begin
(append! words (parse-word))
(parse-words! words))))))
(define skip-seps!
(fn ()
(when (< pos src-len)
(cond
((or (tcl-ws? (cur)) (= (cur) "\n") (= (cur) ";"))
(begin (advance! 1) (skip-seps!)))
((and (= (cur) "\\") (= (char-at 1) "\n"))
(begin (advance! 2) (skip-seps!)))
(else nil)))))
(define parse-all!
(fn ()
(skip-seps!)
(when (< pos src-len)
(cond
((= (cur) "#")
(begin (skip-to-eol!) (parse-all!)))
(else
(let ((words (list)))
(begin
(parse-words! words)
(when (> (len words) 0)
(append! commands {:type "command" :words words}))
(parse-all!))))))))
(parse-all!)
commands)))

4
plans/agent-briefings/tcl-loop.md
View File

@@ -11,7 +11,7 @@ isolation: worktree
## Prompt
You are the sole background agent working `/root/rose-ash/plans/tcl-on-sx.md`. Isolated worktree, forever, one commit per feature. Never push.
You are the sole background agent working `/root/rose-ash/plans/tcl-on-sx.md`. Isolated worktree, forever, one commit per feature. Push to `origin/loops/tcl` after every commit.
## Restart baseline — check before iterating
@@ -42,7 +42,7 @@ Every iteration: implement → test → commit → tick `[ ]` → Progress log
- **Shared-file issues** → plan's Blockers with minimal repro.
- **Delimited continuations** are in `lib/callcc.sx` + `spec/evaluator.sx` Step 5. `sx_summarise` spec/evaluator.sx first — 2300+ lines.
- **SX files:** `sx-tree` MCP tools ONLY. `sx_validate` after edits.
- **Worktree:** commit locally. Never push. Never touch `main`.
- **Worktree:** commit, then push to `origin/loops/tcl`. Never touch `main`.
- **Commit granularity:** one feature per commit.
- **Plan file:** update Progress log + tick boxes every commit.

110
plans/tcl-on-sx.md
View File

@@ -50,7 +50,7 @@ Core mapping:
## Roadmap
### Phase 1 — tokenizer + parser (the Dodekalogue)
- [ ] Tokenizer applying the 12 rules:
- [x] Tokenizer applying the 12 rules:
1. Commands separated by `;` or newlines
2. Words separated by whitespace within a command
3. Double-quoted words: `\` escapes + `[…]` + `${…}` + `$var` substitution
@@ -63,74 +63,76 @@ Core mapping:
10. Order of substitution is left-to-right, single-pass
11. Substitutions don't recurse — substituted text is not re-parsed
12. The result of any substitution is the value, not a new script
- [ ] Parser: script = list of commands; command = list of words; word = literal string + list of substitutions
- [ ] Unit tests in `lib/tcl/tests/parse.sx`
- [x] Parser: script = list of commands; command = list of words; word = literal string + list of substitutions
- [x] Unit tests in `lib/tcl/tests/parse.sx`
### Phase 2 — sequential eval + core commands
- [ ] `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`
- [ ] `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`
- [ ] Dict commands: `dict create`, `dict get`, `dict set`, `dict unset`, `dict exists`, `dict keys`, `dict values`, `dict size`, `dict for`, `dict update`, `dict merge`
- [ ] 60+ tests in `lib/tcl/tests/eval.sx`
- [x] `tcl-eval-script`: walk command list, dispatch each first-word into command table
- [x] Core commands: `set`, `unset`, `incr`, `append`, `lappend`, `puts`, `gets`, `expr`, `if`, `while`, `for`, `foreach`, `switch`, `break`, `continue`, `return`, `error`, `eval`, `subst`, `format`, `scan`
- [x] `expr` is its own mini-language — operator precedence, function calls (`sin`, `sqrt`, `pow`, `abs`, `int`, `double`), variable substitution, command substitution
- [x] 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`
- [x] List commands: `list`, `lindex`, `lrange`, `llength`, `lreverse`, `lsearch`, `lsort`, `lsort -integer/-real/-dictionary`, `lreplace`, `linsert`, `concat`, `split`, `join`
- [x] Dict commands: `dict create`, `dict get`, `dict set`, `dict unset`, `dict exists`, `dict keys`, `dict values`, `dict size`, `dict for`, `dict update`, `dict merge`
- [x] 60+ tests in `lib/tcl/tests/eval.sx`
### Phase 3 — proc + uplevel + upvar (THE SHOWCASE)
- [ ] `proc name args body` — register user-defined command; args supports defaults `{name default}` and rest `args`
- [ ] Frame stack: each proc call pushes a frame with locals dict; pop on return
- [ ] `uplevel ?level? script` — evaluate `script` in level-N frame's env; default level is 1 (caller). `#0` is global, `#1` is relative-1
- [ ] `upvar ?level? otherVar localVar ?…?` — alias localVar to a variable in level-N frame; reads/writes go through the alias
- [ ] `info level`, `info level N`, `info frame`, `info vars`, `info locals`, `info globals`, `info commands`, `info procs`, `info args`, `info body`
- [ ] `global var ?…?` — alias to global frame (sugar for `upvar #0 var var`)
- [ ] `variable name ?value?` — namespace-scoped global
- [ ] Classic programs in `lib/tcl/tests/programs/`:
- [ ] `for-each-line.tcl` — define your own loop construct using `uplevel`
- [ ] `assert.tcl` — assertion macro that reports caller's line
- [ ] `with-temp-var.tcl` — scoped variable rebind via `upvar`
- [ ] `lib/tcl/conformance.sh` + runner, `scoreboard.json` + `scoreboard.md`
- [x] `proc name args body` — register user-defined command; args supports defaults `{name default}` and rest `args`
- [x] Frame stack: each proc call pushes a frame with locals dict; pop on return
- [x] `uplevel ?level? script` — evaluate `script` in level-N frame's env; default level is 1 (caller). `#0` is global, `#1` is relative-1
- [x] `upvar ?level? otherVar localVar ?…?` — alias localVar to a variable in level-N frame; reads/writes go through the alias
- [x] `info level`, `info level N`, `info frame`, `info vars`, `info locals`, `info globals`, `info commands`, `info procs`, `info args`, `info body`
- [x] `global var ?…?` — alias to global frame (sugar for `upvar #0 var var`)
- [x] `variable name ?value?` — namespace-scoped global
- [x] Classic programs in `lib/tcl/tests/programs/`:
- [x] `for-each-line.tcl` — define your own loop construct using `uplevel`
- [x] `assert.tcl` — assertion macro that reports caller's line
- [x] `with-temp-var.tcl` — scoped variable rebind via `upvar`
- [x] `lib/tcl/conformance.sh` + runner, `scoreboard.json` + `scoreboard.md`
### Phase 4 — control flow + error handling
- [ ] `return -code (ok|error|return|break|continue|N) -errorinfo … -errorcode … -level N value`
- [ ] `catch script ?resultVar? ?optionsVar?` — runs script, returns code; sets resultVar to return value/message; optionsVar to the dict
- [ ] `try script ?on code var body ...? ?trap pattern var body...? ?finally body?`
- [ ] `throw type message`
- [ ] `error message ?info? ?code?`
- [ ] Stack-trace with `errorInfo` / `errorCode`
- [ ] 30+ tests in `lib/tcl/tests/error.sx`
- [x] `return -code (ok|error|return|break|continue|N) -errorinfo … -errorcode … -level N value`
- [x] `catch script ?resultVar? ?optionsVar?` — runs script, returns code; sets resultVar to return value/message; optionsVar to the dict
- [x] `try script ?on code var body ...? ?trap pattern var body...? ?finally body?`
- [x] `throw type message`
- [x] `error message ?info? ?code?`
- [x] Stack-trace with `errorInfo` / `errorCode`
- [x] 30+ tests in `lib/tcl/tests/error.sx`
### Phase 5 — namespaces + ensembles
- [ ] `namespace eval ns body`, `namespace current`, `namespace which`, `namespace import`, `namespace export`, `namespace forget`, `namespace delete`
- [ ] Qualified names: `::ns::cmd`, `::ns::var`
- [ ] Ensembles: `namespace ensemble create -map { sub1 cmd1 sub2 cmd2 }`
- [ ] `namespace path` for resolution chain
- [ ] `proc` and `variable` work inside namespaces
- [x] `namespace eval ns body`, `namespace current`, `namespace which`, `namespace import`, `namespace export`, `namespace forget`, `namespace delete`
- [x] Qualified names: `::ns::cmd`, `::ns::var`
- [x] Ensembles: `namespace ensemble create -map { sub1 cmd1 sub2 cmd2 }`
- [x] `namespace path` for resolution chain
- [x] `proc` and `variable` work inside namespaces
### Phase 6 — coroutines + drive corpus
- [ ] `coroutine name cmd ?args…?` — start a coroutine; future calls to `name` resume it
- [ ] `yield ?value?` — suspend, return value to resumer
- [ ] `yieldto cmd ?args…?` — symmetric transfer
- [ ] `coroutine` semantics built on fibers (same delcc primitive as Ruby fibers)
- [ ] Classic programs: `event-loop.tcl` — cooperative scheduler with multiple coroutines
- [ ] System: `clock seconds`, `clock format`, `clock scan` (subset)
- [ ] File I/O: `open`, `close`, `read`, `gets`, `puts -nonewline`, `flush`, `eof`, `seek`, `tell`
- [ ] Drive corpus to 150+ green
- [ ] Idiom corpus — `lib/tcl/tests/idioms.sx` covering classic Welch/Jones idioms
## SX primitive baseline
Use vectors for arrays; numeric tower + rationals for numbers; ADTs for tagged data;
coroutines for fibers; string-buffer for mutable string building; bitwise ops for bit
manipulation; multiple values for multi-return; promises for lazy evaluation; hash tables
for mutable associative storage; sets for O(1) membership; sequence protocol for
polymorphic iteration; gensym for unique symbols; char type for characters; string ports
+ read/write for reader protocols; regexp for pattern matching; bytevectors for binary
data; format for string templating.
- [x] `coroutine name cmd ?args…?` — start a coroutine; future calls to `name` resume it
- [x] `yield ?value?` — suspend, return value to resumer
- [x] `yieldto cmd ?args…?` — symmetric transfer
- [x] `coroutine` semantics built on fibers (same delcc primitive as Ruby fibers)
- [x] Classic programs: `event-loop.tcl` — cooperative scheduler with multiple coroutines
- [x] System: `clock seconds`, `clock format`, `clock scan` (subset)
- [x] File I/O: `open`, `close`, `read`, `gets`, `puts -nonewline`, `flush`, `eof`, `seek`, `tell`
- [x] Drive corpus to 150+ green
- [x] Idiom corpus — `lib/tcl/tests/idioms.sx` covering classic Welch/Jones idioms
## Progress log
_Newest first._
- _(none yet)_
- 2026-05-06: Phase 6 coroutines+clock+file+idioms — generator coroutines, clock/file stubs, 20 coroutine + 20 idiom tests, event-loop.tcl, 329 tests green
- 2026-05-06: Phase 5 namespaces+ensembles — namespace eval/current/which/exists/delete/import/ensemble, qualified names, 289 tests green (22 new namespace tests)
- 2026-05-06: Phase 4 error handling — catch/try/throw/return-code/errorinfo/errorcode, 267 tests green (39 new error tests)
- 2026-05-06: Phase 3 conformance.sh + classic programs — 3/3 PASS (for-each-line/assert/with-temp-var), 228 tests green
- 2026-05-06: Phase 3 proc+uplevel+upvar+info+global — frame stack, isolated proc scope, alias-following var access, 225 tests green (67 parse + 158 eval)
- 2026-05-06: Phase 2 dict commands — 13 subcommands (create/get/set/unset/exists/keys/values/size/for/update/merge/incr/append), 206 tests green (67 parse + 139 eval)
- 2026-05-06: Phase 2 list commands — 12 commands (list/lindex/lrange/llength/lreverse/lsearch/lsort/lreplace/linsert/concat/split/join), 182 tests green (67 parse + 115 eval)
- 2026-05-06: Phase 2 string commands — 16 subcommands (length/index/range/compare/match/toupper/tolower/trim/map/repeat/first/last/is/cat), 156 tests green (67 parse + 89 eval)
- 2026-05-06: Phase 2 expr mini-language — recursive descent parser, operator precedence, parens, unary ops, pow/sqrt/abs/max/min/int/double, 127 tests green (67 parse + 60 eval)
- 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
## Blockers