417 lines
10 KiB
Text
417 lines
10 KiB
Text
# Checking the C++ Features. -*- Autotest -*-
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# Copyright (C) 2004-2005, 2007, 2009-2012 Free Software Foundation,
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# Inc.
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program 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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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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AT_BANNER([[C++ Features.]])
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## ----------------------- ##
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## Doxygen Documentation. ##
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## ----------------------- ##
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m4_define([AT_CHECK_DOXYGEN],
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[m4_case([$1],
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[Public], [m4_pushdef([AT_DOXYGEN_PRIVATE], [NO])],
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[Private], [m4_pushdef([AT_DOXYGEN_PRIVATE], [YES])],
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[m4_fatal([invalid argument: $1])])
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AT_SETUP([Doxygen $1 Documentation])
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AT_BISON_OPTION_PUSHDEFS([%skeleton "lalr1.cc"])
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AT_DATA([input.yy],
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[[%skeleton "lalr1.cc"
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%locations
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%debug
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%defines
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%%
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exp:;
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%%
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]AT_YYERROR_DEFINE[
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]])
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AT_BISON_CHECK([-o input.cc input.yy], 0)
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AT_DATA([Doxyfile],
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[# The PROJECT_NAME tag is a single word (or a sequence of words
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# surrounded by quotes) that should identify the project.
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PROJECT_NAME = "Bison C++ Parser"
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# The QUIET tag can be used to turn on/off the messages that are
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# generated by doxygen. Possible values are YES and NO. If left blank
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# NO is used.
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QUIET = YES
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# The WARNINGS tag can be used to turn on/off the warning messages
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# that are generated by doxygen. Possible values are YES and NO. If
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# left blank NO is used.
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WARNINGS = YES
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# If WARN_IF_UNDOCUMENTED is set to YES, then doxygen will generate
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# warnings for undocumented members. If EXTRACT_ALL is set to YES then
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# this flag will automatically be disabled.
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WARN_IF_UNDOCUMENTED = YES
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# If WARN_IF_DOC_ERROR is set to YES, doxygen will generate warnings
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# for potential errors in the documentation, such as not documenting
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# some parameters in a documented function, or documenting parameters
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# that don't exist or using markup commands wrongly.
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WARN_IF_DOC_ERROR = YES
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# The WARN_FORMAT tag determines the format of the warning messages
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# that doxygen can produce. The string should contain the $file,
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# $line, and $text tags, which will be replaced by the file and line
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# number from which the warning originated and the warning text.
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WARN_FORMAT = "$file:$line: $text"
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# If the EXTRACT_ALL tag is set to YES doxygen will assume all
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# entities in documentation are documented, even if no documentation
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# was available. Private class members and static file members will
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# be hidden unless the EXTRACT_PRIVATE and EXTRACT_STATIC tags are set
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# to YES
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EXTRACT_ALL = YES
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# If the EXTRACT_PRIVATE tag is set to YES all private members of a
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# class will be included in the documentation.
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EXTRACT_PRIVATE = AT_DOXYGEN_PRIVATE
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# If the EXTRACT_STATIC tag is set to YES all static members of a file
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# will be included in the documentation.
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EXTRACT_STATIC = AT_DOXYGEN_PRIVATE
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])
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AT_CHECK([doxygen --version || exit 77], 0, ignore)
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AT_CHECK([doxygen], 0, [], [ignore])
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AT_BISON_OPTION_POPDEFS
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AT_CLEANUP
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m4_popdef([AT_DOXYGEN_PRIVATE])
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])# AT_CHECK_DOXYGEN
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AT_CHECK_DOXYGEN([Public])
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AT_CHECK_DOXYGEN([Private])
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## ------------ ##
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## Namespaces. ##
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## ------------ ##
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# AT_CHECK_NAMESPACE(NAMESPACE-DECL, [COMPILE-ERROR])
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# ---------------------------------------------------
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# See if Bison can handle %define namespace "NAMESPACE-DECL". If COMPILE-ERROR
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# is specified, then Bison should accept the input, but compilation will fail,
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# so don't check compilation.
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m4_define([AT_CHECK_NAMESPACE],
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[
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AT_DATA_GRAMMAR([[input.y]],
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[[%language "C++"
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%defines
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%define namespace "]$1["
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%union { int i; }
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%define global_tokens_and_yystype
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%code {
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// YYSTYPE contains a namespace reference.
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int yylex (YYSTYPE *lval) {
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lval->i = 3;
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return 0;
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}
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}
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%%
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start: ;
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%%
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void
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]$1[::parser::error (const ]$1[::parser::location_type &loc,
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const std::string &msg)
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{
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std::cerr << "At " << loc << ": " << msg << std::endl;
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}
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int
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main (void)
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{
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]$1[::parser p;
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return p.parse ();
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}
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]])
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AT_BISON_CHECK([[-o input.cc input.y]])
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m4_if([$#], [1],
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[AT_COMPILE_CXX([[input]], [[input.cc]])
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AT_PARSER_CHECK([[./input]])])
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])
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AT_SETUP([[Relative namespace references]])
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AT_CHECK_NAMESPACE([[foo]])
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AT_CHECK_NAMESPACE([[foo::bar]])
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AT_CHECK_NAMESPACE([[foo::bar::baz]])
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AT_CLEANUP
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AT_SETUP([[Absolute namespace references]])
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AT_CHECK_NAMESPACE([[::foo]])
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AT_CHECK_NAMESPACE([[::foo::bar]])
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AT_CHECK_NAMESPACE([[::foo::bar::baz]])
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AT_CHECK_NAMESPACE([[ ::foo]])
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AT_CHECK_NAMESPACE([[ ::foo::bar]])
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AT_CHECK_NAMESPACE([[ ::foo::bar::baz]])
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AT_CLEANUP
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AT_SETUP([[Syntactically invalid namespace references]])
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AT_CHECK_NAMESPACE([[:foo:bar]], [[-]])
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AT_CHECK_NAMESPACE([[foo: :bar]], [[-]])
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# This one is interesting because `[3]' is encoded as `@<:@3@:>@', which
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# contains single occurrences of `:'.
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AT_CHECK_NAMESPACE([[foo[3]::bar::baz]], [[-]])
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AT_CHECK_NAMESPACE([[foo::bar,baz]], [[-]])
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AT_CHECK_NAMESPACE([[foo::bar::(baz]], [[-]])
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AT_CLEANUP
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## ------------------ ##
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## Exception safety. ##
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## ------------------ ##
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AT_SETUP([[Exception safety]])
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AT_BISON_OPTION_PUSHDEFS([%skeleton "lalr1.cc"])
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AT_DATA_GRAMMAR([[input.yy]],
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[[%skeleton "lalr1.cc"
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%defines // FIXME: Mandated in 2.6.
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%debug
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%error-verbose
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%code requires
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{
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#include <cassert>
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#include <cstdlib> // size_t and getenv.
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#include <iostream>
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#include <list>
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bool debug = false;
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/// A class that counts its number of instances.
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struct Object
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{
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typedef std::list<const Object*> objects;
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static objects instances;
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char val;
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static bool
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empty ()
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{
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return instances.empty();
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}
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static void
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log (Object const *o, const std::string& msg)
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{
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if (debug)
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{
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if (o)
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std::cerr << o << "->";
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std::cerr << msg << " {";
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const char* sep = " ";
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for (objects::const_iterator i = instances.begin(),
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i_end = instances.end();
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i != i_end;
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++i)
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{
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std::cerr << sep << *i;
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sep = ", ";
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}
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std::cerr << " }" << std::endl;
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}
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}
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Object (char v)
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: val (v)
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{
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instances.push_back(this);
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log (this, "Object::Object");
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}
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~Object ()
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{
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instances.remove(this);
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log (this, "Object::~Object");
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}
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};
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}
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%code
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{
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#include <cassert>
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#include <cstring> // strchr
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#include <stdexcept>
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int yylex (yy::parser::semantic_type *);
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Object::objects Object::instances;
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static char const *input;
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}
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%union
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{
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Object *obj;
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}
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%initial-action
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{
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if (strchr (input, 'i'))
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throw std::runtime_error ("initial-action");
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}
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%destructor { delete $$; } <obj>;
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%printer
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{
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yyo << $$ << " '" << $$->val << '\'';
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if ($$->val == 'p')
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throw std::runtime_error ("printer");
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} <obj>;
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%token <obj> 'a' 'E' 'e' 'p' 'R' 's' 'T'
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%type <obj> list item
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%%
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start: list { delete $1; };
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list:
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item { $$ = $1; }
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| item list { $$ = $1; delete $2; } // Right recursion to load the stack.
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;
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item:
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'a' { $$ = $1; }
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| 'e' { YYUSE ($$); YYUSE($1); error (location_type(), "syntax error"); }
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// Not just 'E', otherwise we reduce when 'E' is the lookahead, and
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// then the stack is emptied, defeating the point of the test.
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| 'E' 'a' { YYUSE($1); $$ = $2; }
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| 'R' { $$ = YY_NULL; delete $1; YYERROR; }
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| 'p' { $$ = $1; }
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| 's' { $$ = $1; throw std::runtime_error ("reduction"); }
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| 'T' { $$ = YY_NULL; delete $1; YYABORT; }
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| error { $$ = YY_NULL; yyerrok; }
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;
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%%
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int
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yylex (yy::parser::semantic_type *lvalp)
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{
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// 'a': no error.
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// 'e': user action calls error.
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// 'E': syntax error, with yyerror that throws.
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// 'i': initial action throws.
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// 'l': yylex throws.
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// 'R': call YYERROR in the action
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// 's': reduction throws.
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// 'T': call YYABORT in the action
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switch (int res = *input++)
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{
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case 'l':
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throw std::runtime_error ("yylex");
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default:
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lvalp->obj = new Object (res);
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// Fall through.
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case 0:
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return res;
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}
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}
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/* A C++ error reporting function. */
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void
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yy::parser::error (const location_type& l, const std::string& m)
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{
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YYUSE (l);
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throw std::runtime_error (m);
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}
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int
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main (int argc, const char *argv[])
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{
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switch (argc)
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{
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case 2:
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input = argv[1];
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break;
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case 3:
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assert (!strcmp (argv[1], "--debug"));
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debug = 1;
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input = argv[2];
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break;
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default:
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abort ();
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}
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yy::parser parser;
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debug |= !!getenv ("YYDEBUG");
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parser.set_debug_level (debug);
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int res = 2;
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try
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{
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res = parser.parse ();
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}
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catch (const std::exception& e)
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{
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std::cerr << "exception caught: " << e.what () << std::endl;
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}
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catch (...)
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{
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std::cerr << "unknown exception caught" << std::endl;
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}
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Object::log (YY_NULL, "end");
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assert (Object::empty());
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return res;
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}
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]])
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AT_BISON_CHECK([[-o input.cc --report=all input.yy]])
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AT_COMPILE_CXX([[input]])
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AT_PARSER_CHECK([[./input aaaas]], [[2]], [[]],
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[[exception caught: reduction
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]])
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AT_PARSER_CHECK([[./input aaaal]], [[2]], [[]],
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[[exception caught: yylex
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]])
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AT_PARSER_CHECK([[./input i]], [[2]], [[]],
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[[exception caught: initial-action
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]])
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AT_PARSER_CHECK([[./input aaaap]])
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AT_PARSER_CHECK([[./input --debug aaaap]], [[2]], [[]], [[stderr]])
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AT_CHECK([[grep '^exception caught: printer$' stderr]], [], [ignore])
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AT_PARSER_CHECK([[./input aaaae]], [[2]], [[]],
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[[exception caught: syntax error
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]])
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AT_PARSER_CHECK([[./input aaaaE]], [[2]], [[]],
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[[exception caught: syntax error, unexpected $end, expecting 'a'
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]])
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AT_PARSER_CHECK([[./input aaaaT]], [[1]])
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# There is error-recovery, so exit success.
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AT_PARSER_CHECK([[./input aaaaR]], [[0]])
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AT_BISON_OPTION_POPDEFS
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AT_CLEANUP
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