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author | Kartik K. Agaram <vc@akkartik.com> | 2018-02-15 21:14:30 -0800 |
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committer | Kartik K. Agaram <vc@akkartik.com> | 2018-02-15 21:14:30 -0800 |
commit | 43ac7bef4b4ca484877ce1a53d9d54a51e1aab86 (patch) | |
tree | ee4212ee0322145a895626a657f53c8121d2d7f2 | |
parent | 745a6dee7875154e3512bed5d2c73869dddef13e (diff) | |
download | mu-43ac7bef4b4ca484877ce1a53d9d54a51e1aab86.tar.gz |
4205
-rw-r--r-- | edit/003-shortcuts.mu | 90 | ||||
-rw-r--r-- | sandbox/003-shortcuts.mu | 90 |
2 files changed, 90 insertions, 90 deletions
diff --git a/edit/003-shortcuts.mu b/edit/003-shortcuts.mu index e24f7e72..02ea77d0 100644 --- a/edit/003-shortcuts.mu +++ b/edit/003-shortcuts.mu @@ -1060,6 +1060,51 @@ def move-to-previous-line editor:&:editor -> go-render?:bool, editor:&:editor [ } ] +# Takes a pointer into the doubly-linked list, scans back to before start of +# previous *wrapped* line. +# Returns original if no next newline. +# Beware: never return null pointer. +def before-previous-screen-line in:&:duplex-list:char, editor:&:editor -> out:&:duplex-list:char [ + local-scope + load-inputs + curr:&:duplex-list:char <- copy in + c:char <- get *curr, value:offset + # compute max, number of characters to skip + # 1 + len%(width-1) + # except rotate second term to vary from 1 to width-1 rather than 0 to width-2 + left:num <- get *editor, left:offset + right:num <- get *editor, right:offset + max-line-length:num <- subtract right, left, -1/exclusive-right, 1/wrap-icon + sentinel:&:duplex-list:char <- get *editor, data:offset + len:num <- previous-line-length curr, sentinel + { + break-if len + # empty line; just skip this newline + prev:&:duplex-list:char <- prev curr + return-unless prev, curr + return prev + } + _, max:num <- divide-with-remainder len, max-line-length + # remainder 0 => scan one width-worth + { + break-if max + max <- copy max-line-length + } + max <- add max, 1 + count:num <- copy 0 + # skip 'max' characters + { + done?:bool <- greater-or-equal count, max + break-if done? + prev:&:duplex-list:char <- prev curr + break-unless prev + curr <- copy prev + count <- add count, 1 + loop + } + return curr +] + scenario editor-adjusts-column-at-previous-line [ local-scope assume-screen 10/width, 5/height @@ -3168,51 +3213,6 @@ after <scroll-up> [ return-if no-movement?, 0/don't-render ] -# Takes a pointer into the doubly-linked list, scans back to before start of -# previous *wrapped* line. -# Returns original if no next newline. -# Beware: never return null pointer. -def before-previous-screen-line in:&:duplex-list:char, editor:&:editor -> out:&:duplex-list:char [ - local-scope - load-inputs - curr:&:duplex-list:char <- copy in - c:char <- get *curr, value:offset - # compute max, number of characters to skip - # 1 + len%(width-1) - # except rotate second term to vary from 1 to width-1 rather than 0 to width-2 - left:num <- get *editor, left:offset - right:num <- get *editor, right:offset - max-line-length:num <- subtract right, left, -1/exclusive-right, 1/wrap-icon - sentinel:&:duplex-list:char <- get *editor, data:offset - len:num <- previous-line-length curr, sentinel - { - break-if len - # empty line; just skip this newline - prev:&:duplex-list:char <- prev curr - return-unless prev, curr - return prev - } - _, max:num <- divide-with-remainder len, max-line-length - # remainder 0 => scan one width-worth - { - break-if max - max <- copy max-line-length - } - max <- add max, 1 - count:num <- copy 0 - # skip 'max' characters - { - done?:bool <- greater-or-equal count, max - break-if done? - prev:&:duplex-list:char <- prev curr - break-unless prev - curr <- copy prev - count <- add count, 1 - loop - } - return curr -] - scenario editor-scrolls-up-past-wrapped-line-using-arrow-keys [ local-scope # screen has 1 line for menu + 3 lines diff --git a/sandbox/003-shortcuts.mu b/sandbox/003-shortcuts.mu index c152f504..c12429f0 100644 --- a/sandbox/003-shortcuts.mu +++ b/sandbox/003-shortcuts.mu @@ -1047,6 +1047,51 @@ def move-to-previous-line editor:&:editor -> editor:&:editor [ } ] +# Takes a pointer into the doubly-linked list, scans back to before start of +# previous *wrapped* line. +# Returns original if no next newline. +# Beware: never return null pointer. +def before-previous-screen-line in:&:duplex-list:char, editor:&:editor -> out:&:duplex-list:char [ + local-scope + load-inputs + curr:&:duplex-list:char <- copy in + c:char <- get *curr, value:offset + # compute max, number of characters to skip + # 1 + len%(width-1) + # except rotate second term to vary from 1 to width-1 rather than 0 to width-2 + left:num <- get *editor, left:offset + right:num <- get *editor, right:offset + max-line-length:num <- subtract right, left, -1/exclusive-right, 1/wrap-icon + sentinel:&:duplex-list:char <- get *editor, data:offset + len:num <- previous-line-length curr, sentinel + { + break-if len + # empty line; just skip this newline + prev:&:duplex-list:char <- prev curr + return-unless prev, curr + return prev + } + _, max:num <- divide-with-remainder len, max-line-length + # remainder 0 => scan one width-worth + { + break-if max + max <- copy max-line-length + } + max <- add max, 1 + count:num <- copy 0 + # skip 'max' characters + { + done?:bool <- greater-or-equal count, max + break-if done? + prev:&:duplex-list:char <- prev curr + break-unless prev + curr <- copy prev + count <- add count, 1 + loop + } + return curr +] + scenario editor-adjusts-column-at-previous-line [ local-scope assume-screen 10/width, 5/height @@ -2517,51 +2562,6 @@ def before-start-of-next-line original:&:duplex-list:char, max:num -> curr:&:dup return curr ] -# takes a pointer into the doubly-linked list, scans back to before start of -# previous *wrapped* line -# returns original if no next newline -# beware: never return null pointer -def before-previous-screen-line in:&:duplex-list:char, editor:&:editor -> out:&:duplex-list:char [ - local-scope - load-inputs - curr:&:duplex-list:char <- copy in - c:char <- get *curr, value:offset - # compute max, number of characters to skip - # 1 + len%(width-1) - # except rotate second term to vary from 1 to width-1 rather than 0 to width-2 - left:num <- get *editor, left:offset - right:num <- get *editor, right:offset - max-line-length:num <- subtract right, left, -1/exclusive-right, 1/wrap-icon - sentinel:&:duplex-list:char <- get *editor, data:offset - len:num <- previous-line-length curr, sentinel - { - break-if len - # empty line; just skip this newline - prev:&:duplex-list:char <- prev curr - return-unless prev, curr - return prev - } - _, max:num <- divide-with-remainder len, max-line-length - # remainder 0 => scan one width-worth - { - break-if max - max <- copy max-line-length - } - max <- add max, 1 - count:num <- copy 0 - # skip 'max' characters - { - done?:bool <- greater-or-equal count, max - break-if done? - prev:&:duplex-list:char <- prev curr - break-unless prev - curr <- copy prev - count <- add count, 1 - loop - } - return curr -] - # ctrl-/ - comment/uncomment current line after <handle-special-character> [ |