Stephan Bergmann af16aa6256 Improve loplugin:stringview
Issue the "instead of O[U]String, pass [u16]string_view" diagnostic also for
operator call arguments.  (The "rather than copy, pass subView()" diagnostic is
already part of handleSubExprThatCouldBeView, so no need to repeat it explicitly
for operator call arguments.)

(And many call sites don't even require an explicit [u16]string_view, esp. with
the recent ad48b2b02f83eed41fb1eb8d16de7e804156fcf1 "Optimized OString operator
+= overloads".  Just some test code in sal/qa/ that explicitly tests the
O[U]String functionality had to be excluded.)

Change-Id: I8d55ba5a7fa16a563f5ffe43d245125c88c793bc
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/115589
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>
2021-05-14 13:11:50 +02:00

160 lines
7.8 KiB
C++

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
#include <sal/config.h>
#include <string_view>
#include <rtl/strbuf.hxx>
#include <rtl/string.hxx>
#include <rtl/ustrbuf.hxx>
#include <rtl/ustring.hxx>
#include <sal/types.h>
void call_view(std::u16string_view) {}
void call_view(std::string_view) {}
struct ConstructWithView
{
ConstructWithView(std::u16string_view) {}
ConstructWithView(std::string_view) {}
};
namespace test1
{
void f1(std::u16string_view s1)
{
// no warning expected
call_view(s1);
}
void f1(std::string_view s1)
{
// no warning expected
call_view(s1);
}
void f1(OUString s1)
{
// expected-error@+1 {{rather than copy, pass with a view using subView() [loplugin:stringview]}}
call_view(s1.copy(1, 2));
// expected-error@+1 {{rather than copy, pass with a view using subView() [loplugin:stringview]}}
call_view(s1.copy(1));
// expected-error@+1 {{rather than copy, pass with a view using subView() [loplugin:stringview]}}
ConstructWithView(s1.copy(1, 2));
// expected-error@+1 {{rather than copy, pass with a view using subView() [loplugin:stringview]}}
ConstructWithView(s1.copy(1));
}
void f1(OString s1)
{
// expected-error@+1 {{rather than copy, pass with a view using subView() [loplugin:stringview]}}
call_view(s1.copy(1, 2));
// expected-error@+1 {{rather than copy, pass with a view using subView() [loplugin:stringview]}}
call_view(s1.copy(1));
// expected-error@+1 {{rather than copy, pass with a view using subView() [loplugin:stringview]}}
ConstructWithView(s1.copy(1, 2));
// expected-error@+1 {{rather than copy, pass with a view using subView() [loplugin:stringview]}}
ConstructWithView(s1.copy(1));
}
}
namespace test2
{
void f3(OUString s1)
{
// expected-error@+1 {{rather than copy, pass with a view using subView() [loplugin:stringview]}}
OUString s2 = s1.copy(1, 2) + "xxx";
// expected-error@+1 {{rather than copy, pass with a view using subView() [loplugin:stringview]}}
s2 = s1.copy(1) + "xxx";
// expected-error@+1 {{rather than copy, pass with a view using subView() [loplugin:stringview]}}
s2 = "xxx" + s1.copy(1);
// expected-error@+1 {{rather than copy, pass with a view using subView() [loplugin:stringview]}}
s2 += s1.copy(1);
}
void f3(OString s1)
{
// expected-error@+1 {{rather than copy, pass with a view using subView() [loplugin:stringview]}}
OString s2 = s1.copy(1, 2) + "xxx";
(void)s2;
// expected-error@+1 {{rather than copy, pass with a view using subView() [loplugin:stringview]}}
OString s3 = s1.copy(1) + "xxx";
(void)s3;
}
}
namespace test3
{
void f4(OUString s1, OUString s2)
{
// expected-error@+1 {{rather than copy, pass with a view using subView() [loplugin:stringview]}}
sal_Unicode x = s2.copy(1, 2)[12];
(void)x;
// expected-error@+1 {{rather than copy, pass with a view using subView() [loplugin:stringview]}}
if (s2.copy(1, 2) < s1)
;
}
}
void f5(char const* s1, sal_Int32 n1, char16_t const* s2, sal_Int32 n2)
{
// expected-error@+1 {{instead of an 'rtl::OString', pass a 'std::string_view' [loplugin:stringview]}}
call_view(OString());
// expected-error@+1 {{instead of an 'rtl::OString' constructed from a 'const char [4]', pass a 'std::string_view' [loplugin:stringview]}}
call_view(OString("foo"));
// expected-error@+1 {{instead of an 'rtl::OString' constructed from a 'const char', pass a 'std::string_view' (or an 'rtl::OStringChar') [loplugin:stringview]}}
call_view(OString(*s1));
// expected-error@+1 {{instead of an 'rtl::OString' constructed from a 'const char *', pass a 'std::string_view' [loplugin:stringview]}}
call_view(OString(s1));
// expected-error@+1 {{instead of an 'rtl::OString' constructed from a 'const char *', pass a 'std::string_view' [loplugin:stringview]}}
call_view(OString(s1, n1));
constexpr OStringLiteral l1("foo");
// expected-error@+1 {{instead of an 'rtl::OString' constructed from a 'const rtl::OStringLiteral<4>', pass a 'std::string_view' [loplugin:stringview]}}
call_view(OString(l1));
// expected-error@+1 {{instead of an 'rtl::OString' constructed from a 'std::string_view' (aka 'basic_string_view<char>'), pass a 'std::string_view' [loplugin:stringview]}}
call_view(OString(std::string_view("foo")));
// expected-error@+1 {{instead of an 'rtl::OString' constructed from a 'OStringNumber<int>', pass a 'std::string_view' [loplugin:stringview]}}
call_view(OString(OString::number(0)));
// expected-error@+1 {{instead of an 'rtl::OUString', pass a 'std::u16string_view' [loplugin:stringview]}}
call_view(OUString());
// expected-error@+1 {{instead of an 'rtl::OUString' constructed from a 'const char [4]', pass a 'std::u16string_view' [loplugin:stringview]}}
call_view(OUString("foo"));
// expected-error@+1 {{instead of an 'rtl::OUString' constructed from a 'const char16_t [4]', pass a 'std::u16string_view' [loplugin:stringview]}}
call_view(OUString(u"foo"));
// expected-error@+1 {{instead of an 'rtl::OUString' constructed from a 'const char', pass a 'std::u16string_view' (or an 'rtl::OUStringChar') [loplugin:stringview]}}
call_view(OUString(*s1));
// expected-error@+1 {{instead of an 'rtl::OUString' constructed from a 'const char16_t', pass a 'std::u16string_view' (or an 'rtl::OUStringChar') [loplugin:stringview]}}
call_view(OUString(*s2));
// expected-error@+1 {{instead of an 'rtl::OUString' constructed from a 'const char16_t *', pass a 'std::u16string_view' [loplugin:stringview]}}
call_view(OUString(s2));
// expected-error@+1 {{instead of an 'rtl::OUString' constructed from a 'const char16_t *', pass a 'std::u16string_view' [loplugin:stringview]}}
call_view(OUString(s2, n2));
// expected-error@+1 {{instead of an 'rtl::OUString' constructed from a 'const char16_t *', pass a 'std::u16string_view' (or an 'rtl::OUStringChar') [loplugin:stringview]}}
call_view(OUString(s2, 1));
constexpr OUStringLiteral l2(u"foo");
// expected-error@+1 {{instead of an 'rtl::OUString' constructed from a 'const rtl::OUStringLiteral<4>', pass a 'std::u16string_view' [loplugin:stringview]}}
call_view(OUString(l2));
// expected-error@+1 {{instead of an 'rtl::OUString' constructed from a 'std::u16string_view' (aka 'basic_string_view<char16_t>'), pass a 'std::u16string_view' [loplugin:stringview]}}
call_view(OUString(std::u16string_view(u"foo")));
// expected-error@+1 {{instead of an 'rtl::OUString' constructed from a 'OUStringNumber<int>', pass a 'std::u16string_view' [loplugin:stringview]}}
call_view(OUString(OUString::number(0)));
}
void f5(OUString s)
{
// expected-error@+1 {{rather than copy, pass with a view using subView() [loplugin:stringview]}}
OUStringBuffer buf(s.copy(5));
// expected-error@+1 {{rather than copy, pass with a view using subView() [loplugin:stringview]}}
buf = s.copy(5);
// expected-error@+1 {{rather than copy, pass with a view using subView() [loplugin:stringview]}}
buf.append(s.copy(12));
// expected-error@+1 {{instead of an 'rtl::OUString' constructed from a 'std::u16string_view' (aka 'basic_string_view<char16_t>'), pass a 'std::u16string_view' [loplugin:stringview]}}
buf.append(OUString(std::u16string_view(u"foo")));
// expected-error@+1 {{instead of an 'rtl::OUString' constructed from a 'std::u16string_view' (aka 'basic_string_view<char16_t>'), pass a 'std::u16string_view' [loplugin:stringview]}}
s += OUString(std::u16string_view(u"foo"));
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */