533 lines
11 KiB
C++
533 lines
11 KiB
C++
// 1999-04-12 bkoz
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// Copyright (C) 1999, 2000 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 2, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING. If not, write to the Free
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// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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// USA.
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// 27.6.1.2.2 arithmetic extractors
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#include <cstdio> // for printf
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#include <istream>
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#include <ostream>
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#include <sstream>
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#include <locale>
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#include <debug_assert.h>
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std::string str_01;
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std::string str_02("true false 0 1 110001");
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std::string str_03("-19999999 777777 -234234 233 -234 33 1 66300.25 .315 1.5");
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std::string str_04("0123");
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std::stringbuf isbuf_01(std::ios_base::in);
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std::stringbuf isbuf_02(str_02, std::ios_base::in);
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std::stringbuf isbuf_03(str_03, std::ios_base::in);
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std::stringbuf isbuf_04(str_04, std::ios_base::in);
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std::istream is_01(NULL);
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std::istream is_02(&isbuf_02);
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std::istream is_03(&isbuf_03);
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std::istream is_04(&isbuf_04);
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std::stringstream ss_01(str_01);
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// minimal sanity check
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bool test01() {
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bool test = true;
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// Integral Types:
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bool b1 = false;
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bool b2 = false;
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short s1 = 0;
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int i1 = 0;
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long l1 = 0;
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unsigned short us1 = 0;
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unsigned int ui1 = 0;
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unsigned long ul1 = 0;
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// Floating-point Types:
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float f1 = 0;
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double d1 = 0;
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long double ld1 = 0;
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// process alphanumeric versions of bool values
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std::ios_base::fmtflags fmt = is_02.flags();
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bool testfmt = fmt & std::ios_base::boolalpha;
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is_02.setf(std::ios_base::boolalpha);
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fmt = is_02.flags();
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testfmt = fmt & std::ios_base::boolalpha;
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is_02 >> b1;
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VERIFY( b1 == 1 );
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is_02 >> b1;
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VERIFY( b1 == 0 );
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// process numeric versions of of bool values
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is_02.unsetf(std::ios_base::boolalpha);
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fmt = is_02.flags();
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testfmt = fmt & std::ios_base::boolalpha;
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is_02 >> b1;
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VERIFY( b1 == 0 );
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is_02 >> b1;
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VERIFY( b1 == 1 );
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// is_03 == "-19999999 777777 -234234 233 -234 33 1 66300.25 .315 1.5"
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is_03 >> l1;
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VERIFY( l1 == -19999999 );
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is_03 >> ul1;
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VERIFY( ul1 == 777777 );
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is_03 >> i1;
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VERIFY( i1 == -234234 );
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is_03 >> ui1;
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VERIFY( ui1 == 233 );
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is_03 >> s1;
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VERIFY( s1 == -234 );
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is_03 >> us1;
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VERIFY( us1 == 33 );
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is_03 >> b1;
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VERIFY( b1 == 1 );
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is_03 >> ld1;
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VERIFY( ld1 == 66300.25 );
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is_03 >> d1;
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VERIFY( d1 == .315 );
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is_03 >> f1;
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VERIFY( f1 == 1.5 );
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is_04 >> std::hex >> i1;
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std::printf ("%d %d %d\n", i1, i1 == 0x123, test);
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VERIFY( i1 == 0x123 );
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std::printf ("%d %d %d\n", i1, i1 == 0x123, test);
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// test void pointers
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int i = 55;
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void* po = &i;
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void* pi;
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ss_01 << po;
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ss_01 >> pi;
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std::printf ("%x %x\n", pi, po);
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VERIFY( po == pi );
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#ifdef DEBUG_ASSERT
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assert(test);
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#endif
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return test;
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}
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// elaborated test for ints
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bool test02() {
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bool test = true;
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const std::string str_01("20000AB");
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std::stringbuf strb_01(str_01, std::ios_base::in);
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std::istream is(&strb_01);
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int n = 15;
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is >> n;
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VERIFY( n == 20000 );
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char c = is.peek();
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VERIFY( c == 65 );
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#ifdef DEBUG_ASSERT
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assert(test);
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#endif
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return test;
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}
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bool test03()
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{
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std::stringbuf sbuf;
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std::istream istr(&sbuf);
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std::ostream ostr(&sbuf);
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bool test = true;
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long l01;
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ostr << "12220101";
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istr >> l01; // _M_in_end set completely incorrectly here.
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VERIFY( l01 == 12220101 );
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VERIFY( istr.rdstate() == std::ios_base::eofbit );
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#ifdef DEBUG_ASSERT
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assert(test);
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#endif
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return test;
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}
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// http://gcc.gnu.org/ml/libstdc++/2000-q1/msg00081.html
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// Jim Parsons
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void test06()
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{
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// default locale, grouping is turned off
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bool test = true;
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unsigned int h4, h3, h2;
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char c;
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std::string s("205,199,144");
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std::istringstream is(s);
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is >> h4; // 205
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VERIFY( h4 == 205 );
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is >> c; // ','
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VERIFY( c == ',' );
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is >> h4; // 199
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VERIFY( h4 == 199 );
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is >> c; // ','
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VERIFY( c == ',' );
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is >> h4; // 144
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VERIFY( is.rdstate() == std::ios_base::eofbit );
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VERIFY( h4 == 144 );
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is >> c; // EOF
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VERIFY( c == ',' );
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VERIFY( static_cast<bool>(is.rdstate() & std::ios_base::failbit) );
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#ifdef DEBUG_ASSERT
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assert(test);
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#endif
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}
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namespace std {
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class test_numpunct1 : public numpunct<char>
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{
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protected:
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string
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do_grouping() const
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{ return string(1, '\003'); }
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};
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} // namespace std
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void test07()
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{
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// manufactured locale, grouping is turned on
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bool test = true;
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unsigned int h4 = 0, h3 = 0, h2 = 0;
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float f1 = 0.0;
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const std::string s1("205,199 23,445.25 1,024,365 123,22,24");
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std::istringstream is(s1);
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is.imbue(std::locale(std::locale(), new std::test_numpunct1));
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// Basic operation.
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is >> h4;
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VERIFY( h4 == 205199 );
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VERIFY( is.good() );
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is.clear();
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is >> f1;
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VERIFY( f1 == 23445.25 );
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VERIFY( is.good() );
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is.clear();
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is >> h3;
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VERIFY( h3 == 1024365 );
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VERIFY( is.good() );
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is.clear();
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is >> h2;
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VERIFY( h2 == 0 );
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VERIFY( static_cast<bool>(is.rdstate() & std::ios_base::failbit) );
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VERIFY( static_cast<bool>(is.rdstate() & std::ios_base::eofbit) );
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// Stress tests for explicit errors in grouping corner cases. The
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// validity of these tests and results have been hammered out in
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// private email between bkoz and ncm between Jan 25 and Jan 27, 2000.
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// Thanks nate -- benjamin
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const std::string s2(",111 4,,4 0.25,345 5..25 156,, 1,000000 1000000 1234,567");
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h3 = h4 = h2 = 0;
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f1 = 0.0;
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const char c_control = '?';
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char c = c_control;
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is.clear();
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is.str(s2);
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is >> h4;
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VERIFY( h4 == 0 );
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VERIFY( static_cast<bool>(is.rdstate() & std::ios_base::failbit) );
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is.clear();
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is >> c;
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VERIFY( c == ',' );
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VERIFY( is.good() );
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is.ignore(3);
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is >> f1;
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VERIFY( f1 == 0.0 );
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VERIFY( static_cast<bool>(is.rdstate() & std::ios_base::failbit) );
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is.clear();
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is >> c;
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VERIFY( c == ',' );
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is >> c;
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VERIFY( c == '4' );
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VERIFY( is.good() );
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is >> f1;
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VERIFY( f1 == 0.25 );
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VERIFY( is.good() );
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is >> c;
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VERIFY( c == ',' );
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is >> h2;
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VERIFY( h2 == 345 );
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VERIFY( is.good() );
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f1 = 0.0;
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h2 = 0;
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is >> f1;
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VERIFY( f1 == 5.0 );
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VERIFY( is.good() );
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is >> f1;
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VERIFY( f1 == .25 );
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VERIFY( is.good() );
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is >> h3;
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VERIFY( h3 == 0 );
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VERIFY( static_cast<bool>(is.rdstate() & std::ios_base::failbit) );
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is.clear();
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is >> c;
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VERIFY( c == ',' ); // second one
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VERIFY( is.good() );
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is >> h2;
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VERIFY( h2 == 0 );
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VERIFY( static_cast<bool>(is.rdstate() & std::ios_base::failbit) );
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is.clear();
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is >> h2;
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VERIFY( h2 == 1000000 );
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VERIFY( is.good() );
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h2 = 0;
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is >> h2;
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VERIFY( h2 == 0 );
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VERIFY( static_cast<bool>(is.rdstate() & std::ios_base::failbit) );
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VERIFY( static_cast<bool>(is.rdstate() & std::ios_base::eofbit) );
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is.clear();
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#ifdef DEBUG_ASSERT
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assert(test);
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#endif
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}
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namespace std {
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class test_numpunct2 : public numpunct<char>
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{
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protected:
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string
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do_grouping() const
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{ return string("\002\003"); }
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};
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} // namespace std
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void test08()
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{
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// manufactured locale, grouping is turned on
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bool test = true;
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unsigned int h4 = 0, h3 = 0, h2 = 0;
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float f1 = 0.0;
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const std::string s1("1,22 205,19 22,123,22");
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const std::string s2("1,220 2050,19 202,123,22");
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std::istringstream is(s1);
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is.imbue(std::locale(std::locale(), new std::test_numpunct2));
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// Basic operation.
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is >> h4;
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VERIFY( h4 == 122 );
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VERIFY( is.good() );
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is.clear();
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is >> h3;
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VERIFY( h3 == 20519 );
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VERIFY( is.good() );
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is.clear();
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is >> h2;
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VERIFY( h2 == 2212322 );
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VERIFY( static_cast<bool>(is.rdstate() & std::ios_base::eofbit) );
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#ifdef DEBUG_ASSERT
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assert(test);
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#endif
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}
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bool test09()
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{
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bool test = true;
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std::string st("2.456e3-+0.567e-2");
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std::stringbuf sb(st);
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std::istream is(&sb);
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double f1 = 0, f2 = 0;
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char c;
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(is>>std::ws) >> f1;
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(is>>std::ws) >> c;
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(is>>std::ws) >> f2;
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test = f1 == 2456;
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VERIFY( f2 == 0.00567 );
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VERIFY( c == '-' );
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#ifdef DEBUG_ASSERT
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assert(test);
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#endif
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return test;
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}
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bool test10() {
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std::string str_01("0 00 000 +0 + 0 - 0");
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std::stringbuf isbuf_01(str_01);
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std::istream is_01(&isbuf_01);
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bool test = true;
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int n = 365;
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is_01 >> n;
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VERIFY( n == 0 );
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n = 364;
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is_01 >> n;
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VERIFY( n == 0 );
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n = 363;
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is_01 >> n;
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VERIFY( n == 0 );
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n = 362;
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is_01 >> n;
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VERIFY( n == 0 );
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n = 361;
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is_01 >> n;
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VERIFY( n == 0 );
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n = 360;
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is_01 >> n;
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VERIFY( n == 0 );
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VERIFY( is_01.rdstate() == std::ios_base::eofbit );
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std::string str_02("0x32 0X33 033 33");
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std::stringbuf isbuf_02(str_02);
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std::istream is_02(&isbuf_02);
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is_02.unsetf(std::ios_base::basefield);
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is_02 >> n;
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VERIFY( n == 50 );
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is_02 >> n;
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VERIFY( n == 51 );
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is_02 >> n;
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VERIFY( n == 27 );
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is_02 >> n;
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VERIFY( n == 33 );
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VERIFY( is_02.rdstate() == std::ios_base::eofbit );
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std::stringbuf isbuf_03(str_02);
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std::istream is_03(&isbuf_03);
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char c;
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int m;
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is_03 >> std::dec >> n >> c >> m;
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VERIFY( n == 0 );
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VERIFY( c == 'x' );
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VERIFY( m == 32 );
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is_03 >> std::oct >> m >> c >> n;
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VERIFY( m == 0 );
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VERIFY( c == 'X' );
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VERIFY( n == 27 );
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is_03 >> std::dec >> m >> n;
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VERIFY( m == 33 );
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VERIFY( n == 33 );
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VERIFY( is_03.rdstate() == std::ios_base::eofbit );
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std::string str_04("3. 4.5E+ 2a5E-3 .6E1");
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std::stringbuf isbuf_04(str_04);
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std::istream is_04(&isbuf_04);
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double f;
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is_04 >> f;
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VERIFY( f == 3.0 );
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is_04 >> f;
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VERIFY( f == 450.0 );
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is_04.ignore();
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is_04 >> f;
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VERIFY( f == 0.005 );
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is_04 >> f;
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VERIFY( f == 6 );
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VERIFY( is_03.rdstate() == std::ios_base::eofbit );
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std::string str_05("0E20 5Ea E16");
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std::stringbuf isbuf_05(str_05);
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std::istream is_05(&isbuf_05);
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is_05 >> f;
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VERIFY( f == 0 );
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is_05 >> f;
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VERIFY( f == 0 );
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VERIFY( is_05.rdstate() == std::ios_base::failbit );
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is_05.clear();
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is_05 >> c;
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VERIFY( c == 'a' );
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is_05 >> f;
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VERIFY( f == 0 );
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VERIFY( is_05.rdstate() == std::ios_base::failbit );
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is_05.clear();
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is_05.ignore();
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is_05 >> n;
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VERIFY( n == 16 );
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#ifdef DEBUG_ASSERT
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assert(test);
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#endif
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return test;
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}
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// In the presence of no fmtflags, the input operator should behave
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// like strtol(x, y, 0)
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// libstdc++/90
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bool test11()
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{
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bool test = true;
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const char* cstrlit = "0x2a";
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// sanity check via 'C' library call
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char* err;
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long l = strtol(cstrlit, &err, 0);
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std::istringstream iss(cstrlit);
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iss.setf(std::ios::fmtflags(0), std::ios::basefield);
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int i;
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iss >> i;
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VERIFY (!iss.fail());
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VERIFY (l == i);
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return test;
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}
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int main()
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{
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test01();
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test02();
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test03();
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test06();
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test07();
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test08();
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test09();
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test10();
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test11();
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return 0;
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}
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// paul miller was right on with riddim warfare!
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