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Fix Issue 18215 - std.array.replace throws a range violation if the from range is longer than the array

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This commit is contained in:
Sebastian Wilzbach 2018-01-09 07:47:13 +01:00
parent 1f319fe22f
commit 7c0dab8d12
1 changed files with 41 additions and 2 deletions
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39
std/array.d
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@ -2124,6 +2124,7 @@ if (isDynamicArray!(E[]) && isForwardRange!R1 && isForwardRange!R2
&& (hasLength!R2 || isSomeString!R2))
{
import std.algorithm.searching : find;
import std.range : dropOne;
if (from.empty) return subject;
@ -2134,6 +2135,10 @@ if (isDynamicArray!(E[]) && isForwardRange!R1 && isForwardRange!R2
auto app = appender!(E[])();
app.put(subject[0 .. subject.length - balance.length]);
app.put(to.save);
// replacing an element in an array is different to a range replacement
static if (is(Unqual!E : Unqual!R1))
replaceInto(app, balance.dropOne, from, to);
else
replaceInto(app, balance[from.length .. $], from, to);
return app.data;
@ -2146,6 +2151,35 @@ if (isDynamicArray!(E[]) && isForwardRange!R1 && isForwardRange!R2
assert("Hello Wörld".replace("l", "h") == "Hehho Wörhd");
}
@safe unittest
{
assert([1, 2, 3, 4, 2].replace([2], [5]) == [1, 5, 3, 4, 5]);
assert([3, 3, 3].replace([3], [0]) == [0, 0, 0]);
assert([3, 3, 4, 3].replace([3, 3], [1, 1, 1]) == [1, 1, 1, 4, 3]);
}
// https://issues.dlang.org/show_bug.cgi?id=18215
@safe unittest
{
auto arr = ["aaa.dd", "b"];
arr = arr.replace("aaa.dd", ".");
assert(arr == [".", "b"]);
arr = ["_", "_", "aaa.dd", "b", "c", "aaa.dd", "e"];
arr = arr.replace("aaa.dd", ".");
assert(arr == ["_", "_", ".", "b", "c", ".", "e"]);
}
// https://issues.dlang.org/show_bug.cgi?id=18215
@safe unittest
{
assert([[0], [1, 2], [0], [3]].replace([0], [4]) == [[4], [1, 2], [4], [3]]);
assert([[0], [1, 2], [0], [3], [1, 2]]
.replace([1, 2], [0]) == [[0], [0], [0], [3], [0]]);
assert([[0], [1, 2], [0], [3], [1, 2], [0], [1, 2]]
.replace([[0], [1, 2]], [[4]]) == [[4], [0], [3], [1, 2], [4]]);
}
/// ditto
void replaceInto(E, Sink, R1, R2)(Sink sink, E[] subject, R1 from, R2 to)
if (isOutputRange!(Sink, E) && isDynamicArray!(E[])
@ -2153,6 +2187,7 @@ if (isOutputRange!(Sink, E) && isDynamicArray!(E[])
&& (hasLength!R2 || isSomeString!R2))
{
import std.algorithm.searching : find;
import std.range : dropOne;
if (from.empty)
{
@ -2169,6 +2204,10 @@ if (isOutputRange!(Sink, E) && isDynamicArray!(E[])
}
sink.put(subject[0 .. subject.length - balance.length]);
sink.put(to.save);
// replacing an element in an array is different to a range replacement
static if (is(Unqual!E : Unqual!R1))
subject = balance.dropOne;
else
subject = balance[from.length .. $];
}
}