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authorJulien Dessaux2021-10-10 17:17:01 +0200
committerJulien Dessaux2021-10-10 17:17:01 +0200
commit4ea0083ffcad9b73057951d871bcf2dbd855bc7c (patch)
tree55f5875f427459342bf0316d106767eb34397b77 /src/field.nim
parentAdded release build flags (diff)
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Refactoring to test the feel of changing a value object to a ref object in nim
Diffstat (limited to '')
-rw-r--r--src/field.nim33
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