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Reintroducing the empty field errors and fixed the bugs introduced in the last commit

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This commit is contained in:
Julien Dessaux 2022-05-06 19:28:27 +02:00
parent 582bfc893c
commit bcb5cc61dd
Signed by: adyxax
GPG key ID: F92E51B86E07177E
1 changed files with 17 additions and 17 deletions
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34
src/field.zig
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@ -149,16 +149,16 @@ pub const Field = struct {
y: i64 = 0,
lines: std.ArrayList(*Line),
lx: usize = 0,
pub fn blank(f: *Field, x: i64, y: i64) void {
pub fn blank(f: *Field, x: i64, y: i64) !void {
const ly = @intCast(i64, f.lines.items.len);
if (ly == 0) return;
if (ly == 0) return error.EmptyFieldError;
if (y < f.y or y >= f.y + ly) return; // outside the field
var l = f.lines.items[@intCast(usize, y - f.y)];
if (l.len() == 0) return; // the line is already empty
l.blank(x);
if (l.len() == 0) {
if (ly == 1) {
return;
return error.EmptyFieldError;
} else if (y == f.y) { // we need to remove leading lines
l.deinit();
var i: usize = 1;
@ -191,6 +191,9 @@ pub const Field = struct {
test "blank" {
var f = try Field.init(std.testing.allocator);
defer f.deinit();
f.lines.items[0].deinit();
f.lines.clearRetainingCapacity();
try std.testing.expectEqual(f.blank(1, 0), error.EmptyFieldError);
var moins2 = try Line.init(std.testing.allocator);
try moins2.set(-3, 'a');
var moins1 = try Line.init(std.testing.allocator);
@ -206,28 +209,29 @@ pub const Field = struct {
f.x = -8;
f.lx = 21;
f.y = -2;
f.blank(6, -1);
try f.blank(6, -1);
try std.testing.expectEqual(f.x, -8);
try std.testing.expectEqual(f.lx, 21);
try std.testing.expectEqual(f.y, -2);
try std.testing.expectEqual(f.lines.items.len, 5);
try std.testing.expectEqual(f.lines.items[1].len(), 0);
f.blank(-3, -2);
try f.blank(-3, -2);
try std.testing.expectEqual(f.x, -8);
try std.testing.expectEqual(f.lx, 21);
try std.testing.expectEqual(f.y, 0);
try std.testing.expectEqual(f.lines.items.len, 3);
f.blank(-8, 1);
try f.blank(-8, 1);
try std.testing.expectEqual(f.x, -4);
try std.testing.expectEqual(f.lx, 17);
try std.testing.expectEqual(f.y, 0);
try std.testing.expectEqual(f.lines.items.len, 3);
try std.testing.expectEqual(f.lines.items[1].len(), 0);
f.blank(12, 2);
try f.blank(12, 2);
try std.testing.expectEqual(f.x, -4);
try std.testing.expectEqual(f.lx, 1);
try std.testing.expectEqual(f.y, 0);
try std.testing.expectEqual(f.lines.items.len, 1);
try std.testing.expectEqual(f.blank(-4, 0), error.EmptyFieldError);
}
pub fn deinit(self: *Field) void {
for (self.lines.items) |*l| {
@ -243,14 +247,19 @@ pub const Field = struct {
pub fn init(allocator: std.mem.Allocator) !*Field {
var f = try allocator.create(Field);
f.allocator = allocator;
f.x = undefined;
f.y = 0;
f.lines = std.ArrayList(*Line).init(allocator);
var l = try f.lines.addOne();
l.* = try Line.init(allocator);
f.lx = 0;
return f;
}
inline fn isIn(f: *Field, x: i64, y: i64) bool {
return x >= f.x and y >= f.y and x < f.x + @intCast(i64, f.lx) and y < f.y + @intCast(i64, f.lines.items.len);
}
pub fn load(f: *Field, reader: anytype) !void {
if (f.lines.items.len > 0) return error.FIELD_NOT_EMPTY;
if (f.lines.items.len > 1 or f.lx > 0) return error.FIELD_NOT_EMPTY;
var lastIsCR = false;
var x: i64 = 0;
var y: i64 = 0;
@ -306,15 +315,6 @@ pub const Field = struct {
try std.testing.expectEqual(f2.load(cr2), error.GOT_CR_WITHOUT_LF);
}
pub fn set(f: *Field, x: i64, y: i64, v: i64) !void {
if (f.lines.items.len == 0) {
f.x = x;
f.y = y;
var l = try f.lines.addOne();
l.* = try Line.init(f.allocator);
try l.*.set(x, v);
f.lx = 1;
return;
}
if (v == ' ') return f.blank(x, y);
if (y >= f.y) {
if (y < f.y + @intCast(i64, f.lines.items.len)) { // the line exists