diff options
Diffstat (limited to 'shell/global.mu')
-rw-r--r-- | shell/global.mu | 104 |
1 files changed, 50 insertions, 54 deletions
diff --git a/shell/global.mu b/shell/global.mu index 0a9bd791..eea55380 100644 --- a/shell/global.mu +++ b/shell/global.mu @@ -629,62 +629,58 @@ fn read-evaluate-and-move-to-globals _in-ah: (addr handle gap-buffer), globals: } } debug-print "$", 4/fg, 0/bg - move-gap-buffer-to-global globals, read-result-ah, _in-ah -} - -# Accepts an input s-expression, naively checks if it is a definition, and if -# so saves the gap-buffer to the appropriate global. -fn move-gap-buffer-to-global _globals: (addr global-table), _read-result-ah: (addr handle cell), gap: (addr handle gap-buffer) { - # if 'read-result' is not a pair, return - var read-result-ah/eax: (addr handle cell) <- copy _read-result-ah - var _read-result/eax: (addr cell) <- lookup *read-result-ah - var read-result/esi: (addr cell) <- copy _read-result - var read-result-type/eax: (addr int) <- get read-result, type - compare *read-result-type, 0/pair - { - break-if-= - return - } - # if read-result->left is neither "define" nor "set", return - var left-ah/eax: (addr handle cell) <- get read-result, left - var _left/eax: (addr cell) <- lookup *left-ah - var left/ecx: (addr cell) <- copy _left - { - var def?/eax: boolean <- symbol-equal? left, "define" - compare def?, 0/false - break-if-!= - var set?/eax: boolean <- symbol-equal? left, "set" - compare set?, 0/false - break-if-!= - return - } - # locate the global for read-result->right->left - var right-ah/eax: (addr handle cell) <- get read-result, right - var right/eax: (addr cell) <- lookup *right-ah - var defined-symbol-ah/eax: (addr handle cell) <- get right, left - var defined-symbol/eax: (addr cell) <- lookup *defined-symbol-ah - var defined-symbol-name-ah/eax: (addr handle stream byte) <- get defined-symbol, text-data - var defined-symbol-name/eax: (addr stream byte) <- lookup *defined-symbol-name-ah - var index/ecx: int <- find-symbol-in-globals _globals, defined-symbol-name - { - compare index, -1/not-found - break-if-!= - return - } - # move 'gap' to it - var globals/eax: (addr global-table) <- copy _globals - compare globals, 0 + # Naively check if read-result is a definition, and if so save the gap-buffer + # to the appropriate global. { - break-if-!= - abort "move to globals" - return + var _read-result/eax: (addr cell) <- lookup *read-result-ah + var read-result/esi: (addr cell) <- copy _read-result + var read-result-type/eax: (addr int) <- get read-result, type + compare *read-result-type, 0/pair + { + break-if-= + return + } + # if read-result->left is neither "define" nor "set", return + var left-ah/eax: (addr handle cell) <- get read-result, left + var _left/eax: (addr cell) <- lookup *left-ah + var left/ecx: (addr cell) <- copy _left + { + var def?/eax: boolean <- symbol-equal? left, "define" + compare def?, 0/false + break-if-!= + var set?/eax: boolean <- symbol-equal? left, "set" + compare set?, 0/false + break-if-!= + return + } + # locate the global for read-result->right->left + var right-ah/eax: (addr handle cell) <- get read-result, right + var right/eax: (addr cell) <- lookup *right-ah + var defined-symbol-ah/eax: (addr handle cell) <- get right, left + var defined-symbol/eax: (addr cell) <- lookup *defined-symbol-ah + var defined-symbol-name-ah/eax: (addr handle stream byte) <- get defined-symbol, text-data + var defined-symbol-name/eax: (addr stream byte) <- lookup *defined-symbol-name-ah + var index/ecx: int <- find-symbol-in-globals globals, defined-symbol-name + { + compare index, -1/not-found + break-if-!= + return + } + # move 'gap' to it + var globals/eax: (addr global-table) <- copy globals + compare globals, 0 + { + break-if-!= + abort "move to globals" + return + } + var global-data-ah/eax: (addr handle array global) <- get globals, data + var global-data/eax: (addr array global) <- lookup *global-data-ah + var offset/ebx: (offset global) <- compute-offset global-data, index + var dest-global/eax: (addr global) <- index global-data, offset + var dest-ah/eax: (addr handle gap-buffer) <- get dest-global, input + copy-object _in-ah, dest-ah } - var global-data-ah/eax: (addr handle array global) <- get globals, data - var global-data/eax: (addr array global) <- lookup *global-data-ah - var offset/ebx: (offset global) <- compute-offset global-data, index - var dest-global/eax: (addr global) <- index global-data, offset - var dest-ah/eax: (addr handle gap-buffer) <- get dest-global, input - copy-object gap, dest-ah } fn set-global-cursor-index _globals: (addr global-table), name-gap: (addr gap-buffer) { |