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// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <cstdint>
#include <vector>
#include "base/containers/auto_spanification_helper.h"
#include "base/containers/span.h"
#include "base/numerics/safe_conversions.h"
// Expected rewrite:
// base::span<int> fct1()
base::span<int> fct1() {
static std::vector<int> ctn = {1, 2, 3};
// Expected rewrite:
// return ctn;
return ctn;
}
// Expected rewrite:
// base::span<int> fct2()
base::span<int> fct2() {
static std::vector<int> ctn = {1, 2, 3};
bool condition = true;
// Expected rewrite:
// base::span<int> var1 = new int[1024];
base::span<int> var1 = new int[1024];
// base::span<int> var2 = ctn;
base::span<int> var2 = ctn;
return (condition) ? var1 : var2;
}
// Expected rewrite:
// base::span<int> fct3()
base::span<int> fct3() {
bool condition = true;
// Expected rewrite:
// base::span<int> var1 = new int[1024];
base::span<int> var1 = new int[1024];
// return base::postIncrementSpan(var1);
return base::postIncrementSpan(var1);
}
// Expected rewrite:
// base::span<int> fct3()
base::span<int> fct4() {
bool condition = true;
// Expected rewrite:
// base::span<int> var1 = new int[1024];
base::span<int> var1 = new int[1024];
// return base::preIncrementSpan(var1);
return base::preIncrementSpan(var1);
}
// Expected rewrite:
// base::span<int> fct5()
base::span<int> fct5() {
bool condition = true;
// Expected rewrite:
// base::span<int> var1 = new int[1024];
base::span<int> var1 = new int[1024];
int offset = 1;
// Expected rewrite:
// return var1.subspan(base::checked_cast<size_t>(offset));
return var1.subspan(base::checked_cast<size_t>(offset));
}
// Expected rewrite:
// base::span<char> fct6()
base::span<char> fct6() {
bool condition = true;
// Expected rewrite:
// base::span<int> var1 = new int[1024];
base::span<int> var1 = new int[1024];
int offset = 1;
// Expected rewrite:
// return
// base::as_writable_byte_span(var1.subspan(base::checked_cast<size_t>(offset)));
return base::as_writable_byte_span(
var1.subspan(base::checked_cast<size_t>(offset)));
}
// Function return type not rewritten since not used.
int* fct7() {
bool condition = true;
// Expected rewrite:
// base::span<int> var1 = new int[1024];
base::span<int> var1 = new int[1024];
int offset = 1;
// Expected rewrite:
// return var1.subspan(base::checked_cast<size_t>(offset)).data();
return var1.subspan(base::checked_cast<size_t>(offset)).data();
}
// Function return type not rewritten since not used.
char* fct8() {
bool condition = true;
// Expected rewrite:
// base::span<int> var1 = new int[1024];
base::span<int> var1 = new int[1024];
int offset = 1;
// Expected rewrite:
// return
// reinterpret_cast<char*>(var1).subspan(base::checked_cast<size_t>(offset)).data();
// As-is, this code doesn't compile because we don't yet handle
// adapting these reinterpret_cast expressions for spans.
return reinterpret_cast<char*>(var1)
.subspan(base::checked_cast<size_t>(offset))
.data();
}
void usage() {
// Expected rewrite:
// base::span<int> v1 = fct1();
base::span<int> v1 = fct1();
// base::postIncrementSpan(v1);
base::postIncrementSpan(v1);
// Expected rewrite:
// base::span<int> v2 = fct2();
base::span<int> v2 = fct2();
// base::postIncrementSpan(v2);
base::postIncrementSpan(v2);
// Expected rewrite:
// base::span<int> v3 = fct3();
base::span<int> v3 = fct3();
// base::postIncrementSpan(v3);
base::postIncrementSpan(v3);
// Expected rewrite:
// base::span<int> v4 = fct4();
base::span<int> v4 = fct4();
// base::postIncrementSpan(v4);
base::postIncrementSpan(v4);
// Expected rewrite:
// base::span<int> v5 = fct5();
base::span<int> v5 = fct5();
// base::postIncrementSpan(v5);
base::postIncrementSpan(v5);
// Expected rewrite:
// base::span<char> v6 = fct6();
base::span<char> v6 = fct6();
// base::postIncrementSpan(v6);
base::postIncrementSpan(v6);
}
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