diff options
Diffstat (limited to 'shell/global.mu')
| -rw-r--r-- | shell/global.mu | 70 |
1 files changed, 66 insertions, 4 deletions
diff --git a/shell/global.mu b/shell/global.mu index 5d34298b..72b4a178 100644 --- a/shell/global.mu +++ b/shell/global.mu @@ -21,6 +21,12 @@ fn initialize-globals _self: (addr global-table) { append-primitive self, "cdr" append-primitive self, "cons" append-primitive self, "=" + append-primitive self, "print" + # TODO: isolate screens per-sandbox + var screen-storage: (handle cell) + var screen-ah/ecx: (addr handle cell) <- address screen-storage + new-screen screen-ah, 5/width, 4/height + append-global self, "screen", *screen-ah } fn render-globals screen: (addr screen), _self: (addr global-table), xmin: int, ymin: int, xmax: int, ymax: int { @@ -42,10 +48,15 @@ fn render-globals screen: (addr screen), _self: (addr global-table), xmin: int, var curr-name-ah/eax: (addr handle array byte) <- get curr, name var _curr-name/eax: (addr array byte) <- lookup *curr-name-ah var curr-name/ebx: (addr array byte) <- copy _curr-name - var tmpx/eax: int <- copy x - tmpx <- draw-text-rightward screen, curr-name, tmpx, xmax, bottom-line, 0x2a/fg=orange, 0x12/bg=almost-black - tmpx <- draw-text-rightward screen, " ", tmpx, xmax, bottom-line, 7/fg=grey, 0x12/bg=almost-black - x <- copy tmpx + { + var skip?/eax: boolean <- string-equal? curr-name, "screen" + compare skip?, 0/false + break-if-!= + var tmpx/eax: int <- copy x + tmpx <- draw-text-rightward screen, curr-name, tmpx, xmax, bottom-line, 0x2a/fg=orange, 0x12/bg=almost-black + tmpx <- draw-text-rightward screen, " ", tmpx, xmax, bottom-line, 7/fg=grey, 0x12/bg=almost-black + x <- copy tmpx + } curr-index <- increment loop } @@ -66,6 +77,9 @@ fn render-globals screen: (addr screen), _self: (addr global-table), xmin: int, var curr-name-ah/eax: (addr handle array byte) <- get curr, name var _curr-name/eax: (addr array byte) <- lookup *curr-name-ah var curr-name/edx: (addr array byte) <- copy _curr-name + var skip?/eax: boolean <- string-equal? curr-name, "screen" + compare skip?, 0/false + break-if-!= var x/eax: int <- copy xmin x, y <- draw-text-wrapping-right-then-down screen, curr-name, xmin, ymin, xmax, ymax, x, y, 0x2a/fg=orange, 0x12/bg=almost-black x, y <- draw-text-wrapping-right-then-down screen, " <- ", xmin, ymin, xmax, ymax, x, y, 7/fg=grey, 0x12/bg=almost-black @@ -245,6 +259,13 @@ fn apply-primitive _f: (addr cell), args-ah: (addr handle cell), out: (addr hand apply-compare args-ah, out, env-h, trace return } + { + var is-print?/eax: boolean <- string-equal? f-name, "print" + compare is-print?, 0/false + break-if-= + apply-print args-ah, out, env-h, trace + return + } abort "unknown primitive function" } @@ -586,3 +607,44 @@ fn apply-compare _args-ah: (addr handle cell), out: (addr handle cell), env-h: ( } new-integer out, 1/true } + +fn apply-print _args-ah: (addr handle cell), out: (addr handle cell), env-h: (handle cell), trace: (addr trace) { + trace-text trace, "eval", "apply print" + var args-ah/eax: (addr handle cell) <- copy _args-ah + var _args/eax: (addr cell) <- lookup *args-ah + var args/esi: (addr cell) <- copy _args + var _env/eax: (addr cell) <- lookup env-h + var env/edi: (addr cell) <- copy _env + # TODO: check that args is a pair + var empty-args?/eax: boolean <- nil? args + compare empty-args?, 0/false + { + break-if-= + error trace, "cons needs 2 args but got 0" + return + } + # screen = args->left + var first-ah/eax: (addr handle cell) <- get args, left + var first/eax: (addr cell) <- lookup *first-ah + var first-type/ecx: (addr int) <- get first, type + compare *first-type, 5/screen + { + break-if-= + error trace, "first arg for 'print' is not a screen" + return + } + var screen-ah/eax: (addr handle screen) <- get first, screen-data + var _screen/eax: (addr screen) <- lookup *screen-ah + var screen/ecx: (addr screen) <- copy _screen + # args->right->left + var right-ah/eax: (addr handle cell) <- get args, right + var right/eax: (addr cell) <- lookup *right-ah + # TODO: check that right is a pair + var second-ah/eax: (addr handle cell) <- get right, left + var stream-storage: (stream byte 0x100) + var stream/edi: (addr stream byte) <- address stream-storage + print-cell second-ah, stream, trace + draw-stream-wrapping-right-then-down-from-cursor-over-full-screen screen, stream, 7/fg, 0/bg + # return what was printed + copy-object second-ah, out +} |