tcl: Phase 6 coroutines + clock/file stubs + idiom corpus (+40 tests, 329 total)
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- Coroutines (generator-style): coroutine/yield/yieldto commands; eager yield collection during body execution, pop-on-call dispatch via registered command closures; coro-yields + coroutines threaded through tcl-call-proc - info exists varname (plus hostname/script/tclversion stubs) - clock seconds/milliseconds/format/scan stubs - File I/O stubs: open/close/read/eof/seek/tell/flush + file subcommands - format command: full %-specifier parsing with flags, width, zero-pad, left-align - Fixed dict set/unset/incr/append/update to use tcl-var-get (upvar alias aware) - Fixed lappend and append to use tcl-var-get for reading (upvar alias aware) - 20 coroutine tests (coro.sx) + 20 idiom corpus tests (idioms.sx) - event-loop.tcl program: cooperative scheduler demo using coroutines - Note: coroutines eagerly collect yields (generator-style, not true suspension) Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
@@ -20,7 +20,7 @@
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(frame name val)
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(assoc frame :locals (assoc (get frame :locals) name val))))
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(define make-tcl-interp (fn () {:result "" :output "" :code 0 :errorinfo "" :errorcode "" :frame (make-frame 0 nil) :frame-stack (list) :procs {} :commands {} :current-ns "::"}))
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(define make-tcl-interp (fn () {:result "" :output "" :code 0 :errorinfo "" :errorcode "" :frame (make-frame 0 nil) :frame-stack (list) :procs {} :commands {} :current-ns "::" :coroutines {} :in-coro false :coro-yields (list)}))
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(define
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tcl-register
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@@ -296,7 +296,10 @@
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:frame-stack updated-below
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:result result-val
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:output (str caller-output proc-output)
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:code (if (= code 2) 0 code))))))))))))))
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:code (if (= code 2) 0 code)
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:coro-yields (get result-interp :coro-yields)
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:coroutines (get result-interp :coroutines)
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:commands (get result-interp :commands))))))))))))))
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(define
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tcl-eval-cmd
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@@ -383,7 +386,7 @@
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(let
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((name (first args)) (suffix (join "" (rest args))))
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(let
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((cur (let ((v (frame-lookup (get interp :frame) name))) (if (nil? v) "" v))))
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((cur (let ((v (frame-lookup (get interp :frame) name))) (if (nil? v) "" (tcl-var-get interp name)))))
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(let
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((new-val (str cur suffix)))
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(assoc (tcl-var-set interp name new-val) :result new-val))))))
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@@ -1102,10 +1105,12 @@
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(let
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((name (first args)) (items (rest args)))
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(let
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((cur (let ((v (frame-lookup (get interp :frame) name))) (if (nil? v) "" v))))
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((cur (let ((v (frame-lookup (get interp :frame) name))) (if (nil? v) "" (tcl-var-get interp name)))))
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(let
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((new-val (if (equal? cur "") (join " " items) (str cur " " (join " " items)))))
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(assoc (tcl-var-set interp name new-val) :result new-val))))))
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((quoted-items (map tcl-list-quote-elem items)))
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(let
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((new-val (if (equal? cur "") (join " " quoted-items) (str cur " " (join " " quoted-items)))))
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(assoc (tcl-var-set interp name new-val) :result new-val)))))))
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(define
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tcl-cmd-eval
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@@ -1281,9 +1286,139 @@
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tcl-cmd-subst
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(fn (interp args) (assoc interp :result (last args))))
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; Format helper: repeat char ch n times, building pad string
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(define
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tcl-fmt-make-pad
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(fn
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(ch cnt acc)
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(if (<= cnt 0) acc (tcl-fmt-make-pad ch (- cnt 1) (str ch acc)))))
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; Format helper: pad string s to width w
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(define
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tcl-fmt-pad
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(fn
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(s width zero-pad? left-align?)
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(let
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((w (if (equal? width "") 0 (parse-int width))))
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(let
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((pad-len (- w (string-length s))))
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(if
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(<= pad-len 0)
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s
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(let
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((pad (tcl-fmt-make-pad (if zero-pad? "0" " ") pad-len "")))
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(if left-align? (str s pad) (str pad s))))))))
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; Format helper: scan flag characters
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(define
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tcl-fmt-scan-flags
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(fn
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(chars j flags)
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(if
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(>= j (len chars))
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{:j j :flags flags}
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(let
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((ch (nth chars j)))
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(if
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(contains? (list "-" "0" "+" " " "#") ch)
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(tcl-fmt-scan-flags chars (+ j 1) (str flags ch))
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{:j j :flags flags})))))
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; Format helper: scan digits for width/precision
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(define
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tcl-fmt-scan-num
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(fn
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(chars j acc-n)
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(if
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(>= j (len chars))
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{:j j :num acc-n}
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(let
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((ch (nth chars j)))
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(if
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(tcl-expr-digit? ch)
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(tcl-fmt-scan-num chars (+ j 1) (str acc-n ch))
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{:j j :num acc-n})))))
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; Main format apply: process chars, produce output string
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(define
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tcl-fmt-apply
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(fn
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(chars n-len fmt-args i arg-idx acc)
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(if
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(>= i n-len)
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acc
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(let
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((c (nth chars i)))
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(if
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(not (equal? c "%"))
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(tcl-fmt-apply chars n-len fmt-args (+ i 1) arg-idx (str acc c))
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; parse specifier
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(let
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((i2 (+ i 1)))
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(if
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(>= i2 n-len)
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(str acc "%")
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(let
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((c2 (nth chars i2)))
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(if
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(equal? c2 "%")
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(tcl-fmt-apply chars n-len fmt-args (+ i2 1) arg-idx (str acc "%"))
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; scan flags
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(let
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((fr (tcl-fmt-scan-flags chars i2 "")))
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(let
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((flags (get fr :flags)) (j (get fr :j)))
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(let
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((wr (tcl-fmt-scan-num chars j "")))
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(let
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((width (get wr :num)) (j2 (get wr :j)))
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; skip precision .N
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(let
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((j3
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(if
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(and (< j2 n-len) (equal? (nth chars j2) "."))
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(let ((pr (tcl-fmt-scan-num chars (+ j2 1) ""))) (get pr :j))
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j2)))
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(if
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(>= j3 n-len)
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(str acc "?")
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(let
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((type-char (nth chars j3))
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(cur-arg (if (< arg-idx (len fmt-args)) (nth fmt-args arg-idx) "")))
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(let
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((zero-pad? (contains? (split flags "") "0"))
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(left-align? (contains? (split flags "") "-")))
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(let
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((formatted
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(cond
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((or (equal? type-char "d") (equal? type-char "i"))
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(tcl-fmt-pad (str (parse-int cur-arg)) width zero-pad? left-align?))
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((equal? type-char "s")
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(tcl-fmt-pad cur-arg width false left-align?))
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((or (equal? type-char "f") (equal? type-char "g") (equal? type-char "e"))
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cur-arg)
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((equal? type-char "x")
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(str (parse-int cur-arg)))
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((equal? type-char "o")
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(str (parse-int cur-arg)))
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((equal? type-char "c")
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cur-arg)
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(else (str "%" type-char)))))
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(tcl-fmt-apply chars n-len fmt-args (+ j3 1) (+ arg-idx 1) (str acc formatted))))))))))))))))))))
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(define
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tcl-cmd-format
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(fn (interp args) (assoc interp :result (join "" args))))
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(fn
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(interp args)
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(if
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(= 0 (len args))
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(error "format: wrong # args")
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(let
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((fmt-str (first args)) (fmt-args (rest args)))
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(let
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((chars (split fmt-str ""))
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(n-len (string-length fmt-str)))
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(assoc interp :result (tcl-fmt-apply chars n-len fmt-args 0 0 "")))))))
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(define tcl-cmd-scan (fn (interp args) (assoc interp :result "0")))
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@@ -2092,7 +2227,7 @@
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(key (nth rest-args 1))
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(val (nth rest-args 2)))
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(let
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((cur (let ((v (frame-lookup (get interp :frame) varname))) (if (nil? v) "" v))))
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((cur (let ((v (if (nil? (frame-lookup (get interp :frame) varname)) nil (tcl-var-get interp varname)))) (if (nil? v) "" v))))
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(let
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((new-dict (tcl-dict-set-pair cur key val)))
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(assoc (tcl-var-set interp varname new-dict) :result new-dict)))))
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@@ -2101,7 +2236,7 @@
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(let
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((varname (first rest-args)) (key (nth rest-args 1)))
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(let
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((cur (let ((v (frame-lookup (get interp :frame) varname))) (if (nil? v) "" v))))
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((cur (let ((v (if (nil? (frame-lookup (get interp :frame) varname)) nil (tcl-var-get interp varname)))) (if (nil? v) "" v))))
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(let
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((new-dict (tcl-dict-unset-key cur key)))
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(assoc (tcl-var-set interp varname new-dict) :result new-dict)))))
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@@ -2177,7 +2312,7 @@
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((body (nth rest-args (- n 1)))
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(kv-args (slice rest-args 1 (- n 1))))
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(let
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((cur (let ((v (frame-lookup (get interp :frame) varname))) (if (nil? v) "" v))))
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((cur (let ((v (if (nil? (frame-lookup (get interp :frame) varname)) nil (tcl-var-get interp varname)))) (if (nil? v) "" v))))
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(let
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((bound-interp
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(let
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@@ -2234,7 +2369,7 @@
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(key (nth rest-args 1))
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(delta (if (> (len rest-args) 2) (parse-int (nth rest-args 2)) 1)))
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(let
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((cur (let ((v (frame-lookup (get interp :frame) varname))) (if (nil? v) "" v))))
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((cur (let ((v (if (nil? (frame-lookup (get interp :frame) varname)) nil (tcl-var-get interp varname)))) (if (nil? v) "" v))))
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(let
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((old-val (let ((v (tcl-dict-get cur key))) (if (nil? v) "0" v))))
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(let
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@@ -2249,7 +2384,7 @@
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(key (nth rest-args 1))
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(suffix (join "" (slice rest-args 2 (len rest-args)))))
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(let
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((cur (let ((v (frame-lookup (get interp :frame) varname))) (if (nil? v) "" v))))
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((cur (let ((v (if (nil? (frame-lookup (get interp :frame) varname)) nil (tcl-var-get interp varname)))) (if (nil? v) "" v))))
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(let
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((old-val (let ((v (tcl-dict-get cur key))) (if (nil? v) "" v))))
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(let
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@@ -2776,8 +2911,264 @@
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(nil? entry)
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(error (str "info body: \"" pname "\" isn't a procedure"))
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(assoc interp :result (get (get entry :def) :body))))))
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; info exists varname — 1 if variable exists in current frame, 0 otherwise
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((equal? sub "exists")
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(let
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((varname (first rest-args)))
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(let
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((val (frame-lookup (get interp :frame) varname)))
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(assoc interp :result (if (nil? val) "0" "1")))))
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; info hostname — stub
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((equal? sub "hostname")
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(assoc interp :result "localhost"))
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; info script — stub
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((equal? sub "script")
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(assoc interp :result ""))
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; info tclversion — stub
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((equal? sub "tclversion")
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(assoc interp :result "8.6"))
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(else (error (str "info: unknown subcommand \"" sub "\""))))))))
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; --- coroutine support ---
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; yield: inside a coroutine body, record a yielded value
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(define
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tcl-cmd-yield
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(fn
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(interp args)
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(let
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((val (if (> (len args) 0) (first args) "")))
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(if
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(get interp :in-coro)
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(assoc
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(assoc interp :coro-yields (append (get interp :coro-yields) (list val)))
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:result "")
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(error "yield called outside coroutine")))))
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; yieldto: stub — yield empty string
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(define
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tcl-cmd-yieldto
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(fn
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(interp args)
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(if
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(get interp :in-coro)
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(assoc
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(assoc interp :coro-yields (append (get interp :coro-yields) (list "")))
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:result "")
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(error "yieldto called outside coroutine"))))
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; make-coro-cmd: returns a command function that pops values from the coroutine's yields list
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(define
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make-coro-cmd
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(fn
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(coro-name)
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(fn
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(interp args)
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(let
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((coros (get interp :coroutines)))
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(let
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((coro (get coros coro-name)))
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(if
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(nil? coro)
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(error (str "coroutine \"" coro-name "\" not found"))
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(let
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((yields (get coro :yields))
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(pos (get coro :pos)))
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(if
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(>= pos (len yields))
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(assoc interp :result "")
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(let
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((val (nth yields pos)))
|
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(let
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((new-coro (assoc coro :pos (+ pos 1))))
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(assoc
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(assoc interp :coroutines (assoc coros coro-name new-coro))
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:result val)))))))))))
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; coroutine: execute proc eagerly in a coroutine context, collecting all yields
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(define
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tcl-cmd-coroutine
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(fn
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(interp args)
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(if
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(< (len args) 2)
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(error "coroutine: wrong # args")
|
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(let
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((coro-name (first args))
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(cmd-name (nth args 1))
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(call-args (rest (rest args))))
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; set up coroutine context
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(let
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((coro-interp
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(assoc interp
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:in-coro true
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:coro-yields (list)
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:result ""
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:code 0)))
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; find the command or proc and execute it
|
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(let
|
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((cmd-fn (get (get coro-interp :commands) cmd-name)))
|
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(let
|
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((exec-result
|
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(if
|
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(nil? cmd-fn)
|
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(let
|
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((proc-entry (tcl-proc-lookup coro-interp cmd-name)))
|
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(if
|
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(nil? proc-entry)
|
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(error (str "coroutine: unknown command \"" cmd-name "\""))
|
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(tcl-call-proc coro-interp (get proc-entry :name) (get proc-entry :def) call-args)))
|
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(cmd-fn coro-interp call-args))))
|
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(let
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((yields (get exec-result :coro-yields)))
|
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; build the coroutine state
|
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(let
|
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((new-coros (assoc (get exec-result :coroutines) coro-name {:yields yields :pos 0})))
|
||||
; register the coroutine command in the commands dict
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(let
|
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((new-commands (assoc (get exec-result :commands) coro-name (make-coro-cmd coro-name))))
|
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(assoc exec-result
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:coroutines new-coros
|
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:commands new-commands
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:in-coro false
|
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:coro-yields (list)
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:result "")))))))))))
|
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|
||||
; --- clock command (stubs) ---
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|
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(define
|
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tcl-cmd-clock
|
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(fn
|
||||
(interp args)
|
||||
(if
|
||||
(= 0 (len args))
|
||||
(error "clock: wrong # args")
|
||||
(let
|
||||
((sub (first args)) (rest-args (rest args)))
|
||||
(cond
|
||||
((equal? sub "seconds") (assoc interp :result "0"))
|
||||
((equal? sub "milliseconds") (assoc interp :result "0"))
|
||||
((equal? sub "format") (assoc interp :result "Thu Jan 1 00:00:00 UTC 1970"))
|
||||
((equal? sub "scan") (assoc interp :result "0"))
|
||||
(else (error (str "clock: unknown subcommand \"" sub "\""))))))))
|
||||
|
||||
; --- file I/O stubs ---
|
||||
|
||||
(define
|
||||
tcl-cmd-open
|
||||
(fn
|
||||
(interp args)
|
||||
(assoc interp :result "file0")))
|
||||
|
||||
(define
|
||||
tcl-cmd-close
|
||||
(fn
|
||||
(interp args)
|
||||
(assoc interp :result "")))
|
||||
|
||||
(define
|
||||
tcl-cmd-read
|
||||
(fn
|
||||
(interp args)
|
||||
(assoc interp :result "")))
|
||||
|
||||
; gets channel ?varname?
|
||||
(define
|
||||
tcl-cmd-gets-chan
|
||||
(fn
|
||||
(interp args)
|
||||
(if
|
||||
(> (len args) 1)
|
||||
; gets channel varname: store "" and return -1 (EOF)
|
||||
(assoc (tcl-var-set interp (nth args 1) "") :result "-1")
|
||||
; gets channel: return "" (EOF)
|
||||
(assoc interp :result ""))))
|
||||
|
||||
(define
|
||||
tcl-cmd-eof
|
||||
(fn
|
||||
(interp args)
|
||||
(assoc interp :result "1")))
|
||||
|
||||
(define
|
||||
tcl-cmd-seek
|
||||
(fn
|
||||
(interp args)
|
||||
(assoc interp :result "")))
|
||||
|
||||
(define
|
||||
tcl-cmd-tell
|
||||
(fn
|
||||
(interp args)
|
||||
(assoc interp :result "0")))
|
||||
|
||||
(define
|
||||
tcl-cmd-flush
|
||||
(fn
|
||||
(interp args)
|
||||
(assoc interp :result "")))
|
||||
|
||||
; file command dispatcher
|
||||
(define
|
||||
tcl-cmd-file
|
||||
(fn
|
||||
(interp args)
|
||||
(if
|
||||
(= 0 (len args))
|
||||
(error "file: wrong # args")
|
||||
(let
|
||||
((sub (first args)) (rest-args (rest args)))
|
||||
(cond
|
||||
((equal? sub "exists")
|
||||
(assoc interp :result "0"))
|
||||
((equal? sub "join")
|
||||
(assoc interp :result (join "/" rest-args)))
|
||||
((equal? sub "split")
|
||||
(assoc interp :result (tcl-list-build (filter (fn (s) (not (equal? s ""))) (split (first rest-args) "/")))))
|
||||
((equal? sub "tail")
|
||||
(let
|
||||
((parts (filter (fn (s) (not (equal? s ""))) (split (first rest-args) "/"))))
|
||||
(assoc interp :result (if (= 0 (len parts)) "" (last parts)))))
|
||||
((equal? sub "dirname")
|
||||
(let
|
||||
((parts (filter (fn (s) (not (equal? s ""))) (split (first rest-args) "/"))))
|
||||
(assoc interp :result
|
||||
(if
|
||||
(<= (len parts) 1)
|
||||
"."
|
||||
(str "/" (join "/" (take-n parts (- (len parts) 1))))))))
|
||||
((equal? sub "extension")
|
||||
(let
|
||||
((nm (first rest-args)))
|
||||
(let
|
||||
((dot-idx (tcl-string-last "." nm (- (string-length nm) 1))))
|
||||
(assoc interp :result
|
||||
(if
|
||||
(equal? dot-idx "-1")
|
||||
""
|
||||
(substring nm (parse-int dot-idx) (string-length nm)))))))
|
||||
((equal? sub "rootname")
|
||||
(let
|
||||
((nm (first rest-args)))
|
||||
(let
|
||||
((dot-idx (tcl-string-last "." nm (- (string-length nm) 1))))
|
||||
(assoc interp :result
|
||||
(if
|
||||
(equal? dot-idx "-1")
|
||||
nm
|
||||
(substring nm 0 (parse-int dot-idx)))))))
|
||||
((equal? sub "isfile") (assoc interp :result "0"))
|
||||
((equal? sub "isdir") (assoc interp :result "0"))
|
||||
((equal? sub "isdirectory") (assoc interp :result "0"))
|
||||
((equal? sub "readable") (assoc interp :result "0"))
|
||||
((equal? sub "writable") (assoc interp :result "0"))
|
||||
((equal? sub "size") (assoc interp :result "0"))
|
||||
((equal? sub "mkdir") (assoc interp :result ""))
|
||||
((equal? sub "copy") (assoc interp :result ""))
|
||||
((equal? sub "rename") (assoc interp :result ""))
|
||||
((equal? sub "delete") (assoc interp :result ""))
|
||||
(else (error (str "file: unknown subcommand \"" sub "\""))))))))
|
||||
|
||||
(define
|
||||
make-default-tcl-interp
|
||||
(fn
|
||||
@@ -2872,4 +3263,28 @@
|
||||
((i (tcl-register i "throw" tcl-cmd-throw)))
|
||||
(let
|
||||
((i (tcl-register i "try" tcl-cmd-try)))
|
||||
(tcl-register i "namespace" tcl-cmd-namespace))))))))))))))))))))))))))))))))))))))))))))))))
|
||||
(let
|
||||
((i (tcl-register i "namespace" tcl-cmd-namespace)))
|
||||
(let
|
||||
((i (tcl-register i "coroutine" tcl-cmd-coroutine)))
|
||||
(let
|
||||
((i (tcl-register i "yield" tcl-cmd-yield)))
|
||||
(let
|
||||
((i (tcl-register i "yieldto" tcl-cmd-yieldto)))
|
||||
(let
|
||||
((i (tcl-register i "clock" tcl-cmd-clock)))
|
||||
(let
|
||||
((i (tcl-register i "open" tcl-cmd-open)))
|
||||
(let
|
||||
((i (tcl-register i "close" tcl-cmd-close)))
|
||||
(let
|
||||
((i (tcl-register i "read" tcl-cmd-read)))
|
||||
(let
|
||||
((i (tcl-register i "eof" tcl-cmd-eof)))
|
||||
(let
|
||||
((i (tcl-register i "seek" tcl-cmd-seek)))
|
||||
(let
|
||||
((i (tcl-register i "tell" tcl-cmd-tell)))
|
||||
(let
|
||||
((i (tcl-register i "flush" tcl-cmd-flush)))
|
||||
(tcl-register i "file" tcl-cmd-file))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))
|
||||
|
||||
Reference in New Issue
Block a user