diff options
Diffstat (limited to 'src/field.nim')
| -rw-r--r-- | src/field.nim | 33 |
1 files changed, 17 insertions, 16 deletions
diff --git a/src/field.nim b/src/field.nim index e63a64e..215a0e3 100644 --- a/src/field.nim +++ b/src/field.nim @@ -1,5 +1,5 @@ type - Line = object + Line = ref object x, l: int columns: seq[int] @@ -11,7 +11,7 @@ type func Blank*(f: var Field, x, y: int) = if y < f.y or y >= f.y+f.ly: # outside the field return - var l = addr f.lines[y-f.y] + var l = f.lines[y-f.y] if x < l.x or x >= l.x+l.l: # outside the field return if x > l.x and x < l.x+l.l-1: # just set the value @@ -20,14 +20,14 @@ func Blank*(f: var Field, x, y: int) = if l.l == 1: # this was the last character on the line if y == f.y: # we need to trim the leading lines var i = 1 - while f.lines[i].l == 0: + while f.lines[i] == nil or f.lines[i].l == 0: inc i f.y += i f.lines = f.lines[i..<f.ly] f.ly -= i elif y == f.y+f.ly-1: # we need to trim the trailing lines var i = f.ly-2 - while f.lines[i].l == 0: + while f.lines[i] == nil or f.lines[i].l == 0: dec i f.ly = i+1 f.lines = f.lines[0..<f.ly] @@ -51,7 +51,7 @@ func Blank*(f: var Field, x, y: int) = f.x = f.lines[0].x var x2 = f.lines[0].l + f.lines[0].x for i in 1..<f.ly: - if f.lines[i].l == 0: + if f.lines[i] == nil or f.lines[i].l == 0: continue if f.x > f.lines[i].x: f.x = f.lines[i].x @@ -74,10 +74,8 @@ proc Load*(filename: string): ref Field = if not open(file, filename): return nil defer: file.close() - var f: ref Field - new(f) - f.lines.add(Line()) - var l = addr f.lines[0] + var f = new(Field) + var l = new(Line) var trailingSpaces = 0 var data: array[4096, char] var lastReadIsCR = false @@ -89,9 +87,10 @@ proc Load*(filename: string): ref Field = return nil f.x = l.x if l.l > 0: - inc f.ly if f.lx < l.l+l.x-f.x: f.lx = l.l+l.x-f.x + f.lines.add(l) + inc f.ly break var i = 0 while i < n: @@ -107,14 +106,14 @@ proc Load*(filename: string): ref Field = if l.l == 0: return nil f.x = l.x - inc f.ly if l.l > 0: if f.x > l.x: f.x = l.x if f.lx < l.l+l.x-f.x: f.lx = l.l+l.x-f.x - f.lines.add(Line()) - l = addr f.lines[^1] + inc f.ly + f.lines.add(l) + l = new(Line) trailingSpaces = 0 if data[i] == '\r': if i+1 < n and data[i+1] == '\n': @@ -140,7 +139,6 @@ proc Load*(filename: string): ref Field = l.columns.add(int(data[i])) inc l.l inc i - f.lines = f.lines[0..<f.ly] return f func Set*(f: var Field, x, y, v: int) = @@ -148,11 +146,14 @@ func Set*(f: var Field, x, y, v: int) = f.Blank(x, y) elif y >= f.y: if y < f.y+f.ly: # the line exists - var l = addr f.lines[y-f.y] - if l.l == 0: # An empty line is a special case + var l = f.lines[y-f.y] + if l == nil or l.l == 0: # An empty line is a special case + if l == nil: + new(l) l.x = x l.l = 1 l.columns = @[v] + f.lines[y-f.y] = l if f.x > x: f.lx = f.lx+f.x-x f.x = x |