# Value type. -*- Autotest -*-
# Copyright (C) 2013-2015, 2018-2021 Free Software Foundation, Inc.
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
AT_BANNER([[Value type tests.]])
## ----------------------------------- ##
## %union vs. %define api.value.type. ##
## ----------------------------------- ##
AT_SETUP([[%union vs. %define api.value.type]])
AT_DATA([[input.y]],
[[%union { int ival; }
%define api.value.type union-directive
%%
exp: %empty;
]])
AT_BISON_CHECK([[input.y]], [[1]], [[]],
[[input.y:2.1-38: error: '%union' and '%define api.value.type' cannot be used together
]])
AT_CLEANUP
## ---------------------------------------- ##
## %yacc vs. %define api.value.type union. ##
## ---------------------------------------- ##
AT_SETUP([[%yacc vs. %define api.value.type union]])
AT_DATA([[input.y]],
[[%yacc
%define api.value.type union
%%
exp: %empty;
]])
AT_BISON_CHECK([[input.y]], [[1]], [[]],
[[input.y:2.1-28: error: '%yacc' and '%define api.value.type "union"' cannot be used together
]])
AT_CLEANUP
## ---------------- ##
## api.value.type. ##
## ---------------- ##
# _AT_TEST($1: BISON-DIRECTIVES,
# $2: MORE-BISON-DIRECTIVES,
# $3: PARSER-ACTION,
# $4: INPUT,
# $5: SCANNER-ACTION,
# $6: RESULT,
# $7: REQUIREMENT)
# --------------------------------------
# Compile the grammar and check the expected result.
# BISON-DIRECTIVES are passed to AT_SETUP, contrary to MORE-BISON-DIRECTIVES.
#
# Use REQUIREMENT e.g. skip the test if the compiler does not meet the
# requirements.
m4_pushdef([_AT_TEST],
[
AT_SETUP([$1])
AT_KEYWORDS([api.value.type])
AT_BISON_OPTION_PUSHDEFS([%debug $1 $2])
AT_DATA_GRAMMAR([test.y],
[[%debug
%code
{
# include <stdio.h>
# include <stdlib.h>
]AT_YYERROR_DECLARE[
]AT_YYLEX_DECLARE[
}
]$1[
]$2[
%%
start: $3;
%%
]AT_YYERROR_DEFINE[
]AT_YYLEX_DEFINE([$4], [$5])[
]AT_MAIN_DEFINE[
]])
AT_LANG_FOR_EACH_STD([
AT_GLR2_CC_IF([AT_REQUIRE_CXX_STD(11, [echo "$at_std not supported"; continue])])
$7
AT_FULL_COMPILE([[test]])
AT_PARSER_CHECK([[test]], 0, [[$6
]])
])
AT_BISON_OPTION_POPDEFS
AT_CLEANUP
])
# AT_TEST($1: BISON-DIRECTIVES,
# $2: MORE-BISON-DIRECTIVES,
# $3: PARSER-ACTION,
# $4: INPUT,
# $5: SCANNER-ACTION,
# $6: RESULT,
# $7: REQUIREMENT)
# --------------------------------------
# Check with and without %header, to avoid regressions. It turns out
# that in that case yacc.c calls the set-up of the %union twice,
# because YYSTYPE is defined once in the header, and once in the
# implementation file (eventually it'd be better to include the header
# file, but that's another story). Unfortunately running these macros
# a second time doubled the side-effects and resulted in a double
# definition of the union members.
m4_pushdef([AT_TEST],
[_AT_TEST([$1], [$2], [$3], [$4], [$5], [$6], [$7])
_AT_TEST([$1 %header], [$2], [$3], [$4], [$5], [$6], [$7])
])
m4_foreach([b4_skel], [[yacc.c], [glr.c], [lalr1.cc], [glr.cc], [glr2.cc]],
[# A built-in type.
AT_TEST([%skeleton "]b4_skel["
%define api.value.type {double}],
[],
['1' '2' { printf ("%2.1f\n", $1 + $2); }],
["12"],
[if (res)
AT_VAL = (res - '0') / 10.0],
[0.3])
# A typedef which looks like a Bison keyword, but it's using braces.
AT_TEST([%skeleton "]b4_skel["
%define api.value.type {variant}],
[%code requires { typedef double variant; }],
['1' '2' { printf ("%2.1f\n", $1 + $2); }],
["12"],
[if (res)
AT_VAL = (res - '0') / 10.0],
[0.3])
# A user defined struct.
AT_TEST([%skeleton "]b4_skel["
%define api.value.type {struct foo}],
[%code requires { struct foo { float fval; int ival; }; }],
['1' '2'
{ printf ("%d %2.1f\n", $1.ival + $2.ival, $1.fval + $2.fval); }],
["12"],
[if (res)
{
AT_VAL.ival = (res - '0') * 10;
AT_VAL.fval = YY_CAST (float, res - '0') / 10.f;
}],
[30 0.3])
# A user defined struct that uses pointers.
AT_TEST([%skeleton "]b4_skel["
%define api.value.type {struct bar}],
[%code requires
{
struct u
{
int ival;
};
struct bar
{
struct u *up;
};
}
%token <up->ival> '1' '2'
%printer { ]AT_CXX_IF([[yyo << $$]],
[[fprintf (yyo, "%d", $$)]])[; } <up->ival>
],
['1' '2'
{
printf ("%d %d\n", $1, $<up->ival>2);
free ($<up>1);
free ($<up>2);
}],
["12"],
[if (res)
{
AT_VAL.up = YY_CAST (struct u *, malloc (sizeof *AT_VAL.up));
assert (AT_VAL.up);
AT_VAL.up->ival = res - '0';
}
],
[1 2])
# A user defined union.
AT_TEST([%skeleton "]b4_skel["
%define api.value.type {union foo}],
[%code requires { union foo { float fval; int ival; }; }],
['1' '2' { printf ("%d %2.1f\n", $1.ival, $2.fval); }],
["12"],
[if (res == '1')
AT_VAL.ival = 10;
else if (res == '2')
AT_VAL.fval = .2f],
[10 0.2])
# A %union and a named %union. In C++ named %union is an error.
m4_foreach([b4_union],
[m4_bmatch(b4_skel, [\.cc$],
[[%union]],
[[%union], [%union foo],
[%define api.value.union.name foo; %union]])],
[AT_TEST([%skeleton "]b4_skel["
]b4_union[ { float fval; int ival; };],
[%token <ival> '1';
%token <fval> '2';],
['1' '2' { printf ("%d %2.1f\n", $1, $2); }],
["12"],
[if (res == '1')
AT_VAL.ival = 10;
else if (res == '2')
AT_VAL.fval = 0.2f],
[10 0.2])])
# A Bison-defined union.
# The token names are not available directly in C++, we use their
# codes to keep it simple between C and C++.
AT_TEST([%skeleton "]b4_skel["
%define api.value.type union],
[%token <int> ONE 101;
%token <float> TWO 102 THREE 103;
%printer { ]AT_CXX_IF([[yyo << $$]],
[[fprintf (yyo, "%d", $$)]])[; } <int>
%printer { ]AT_CXX_IF([[yyo << $$]],
[[fprintf (yyo, "%f", $$)]])[; } <float>
],
[ONE TWO THREE { printf ("%d %2.1f %2.1f\n", $1, $2, $3); }],
[{ 101, 102, 103, EOF }],
[if (res == 101)
AT_VAL.ONE = 10;
else if (res == 102)
AT_VAL.TWO = .2f;
else if (res == 103)
AT_VAL.THREE = 3.3f],
[10 0.2 3.3])
# A Bison-defined variant, for lalr1.cc only.
m4_if(b4_skel, [lalr1.cc], [
AT_TEST([%skeleton "]b4_skel["
%define api.value.type variant],
[%token <int> '1';
%token <std::string> '2';],
['1' '2' { std::cout << $1 << ", " << $2 << '\n'; }],
["12"],
[if (res == '1')
AT_VAL.build (10);
else if (res == '2')
AT_VAL.build<std::string> ("two");],
[10, two])
# Test a regression where we passed user types (we can include
# commas) to a CPP macro.
AT_TEST([%skeleton "]b4_skel["
%define api.value.type variant],
[%token <std::pair<int, int>> '1';
%token <std::pair<std::string, std::string>> '2';],
['1' '2'
{
std::cout << $1.first << ':' << $1.second << ", "
<< $2.first << ':' << $2.second << '\n';
}],
["12"],
[if (res == '1')
AT_VAL.build (std::make_pair (10, 11));
else if (res == '2')
AT_VAL.build (std::pair<std::string, std::string> ("two", "deux"));],
[10:11, two:deux])
# Type-based token constructors on move-only types, and types with commas.
AT_TEST([%skeleton "]b4_skel["
%define api.value.type variant
%define api.token.constructor],
[[%token <std::pair<int, int>> '1' '2';]],
['1' '2'
{
std::cout << $1.first << ':' << $1.second << ", "
<< $2.first << ':' << $2.second << '\n';
}],
["12"],
[[typedef yy::parser::symbol_type symbol;
if (res)
return symbol (res, std::make_pair (res - '0', res - '0' + 1));
else
return symbol (res)]],
[1:2, 2:3])
# Move-only types, and variadic emplace.
AT_TEST([%skeleton "]b4_skel["
%code requires { #include <memory> }
%define api.value.type variant],
[[%token <std::unique_ptr<int>> '1';
%token <std::pair<int, int>> '2';]],
['1' '2' { std::cout << *$1 << ", "
<< $2.first << ':' << $2.second << '\n'; }],
["12"],
[[if (res == '1')
]AT_VAL[.emplace <std::unique_ptr<int>>
(std::make_unique <int> (10));
else if (res == '2')
]AT_VAL[.emplace <std::pair<int, int>> (21, 22);]],
[10, 21:22],
[AT_REQUIRE_CXX_STD(14, [echo "$at_std not supported"; continue])])
# Token constructors on move-only types, and types with commas.
AT_TEST([%skeleton "]b4_skel["
%code requires { #include <memory> }
%define api.value.type variant
%define api.token.constructor],
[[%token <std::unique_ptr<int>> ONE;
%token <std::pair<int, int>> TWO;
%token EOI 0;]],
[ONE TWO { std::cout << *$1 << ", "
<< $2.first << ':' << $2.second << '\n'; }],
["12"],
[[if (res == '1')
return yy::parser::make_ONE (std::make_unique<int> (10));
else if (res == '2')
return yy::parser::make_TWO (std::make_pair (21, 22));
else
return yy::parser::make_EOI ()]],
[10, 21:22],
[AT_REQUIRE_CXX_STD(14, [echo "$at_std not supported"; continue])])
# Type-based token constructors on move-only types, and types with commas.
AT_TEST([%skeleton "]b4_skel["
%code requires { #include <memory> }
%define api.value.type variant
%define api.token.constructor],
[[%token <std::unique_ptr<int>> '1';
%token <std::pair<int, int>> '2';]],
['1' '2' { std::cout << *$1 << ", "
<< $2.first << ':' << $2.second << '\n'; }],
["12"],
[[if (res == '1')
return {res, std::make_unique<int> (10)};
else if (res == '2')
return {res, std::make_pair (21, 22)};
else
return res]],
[10, 21:22],
[AT_REQUIRE_CXX_STD(14, [echo "$at_std not supported"; continue])])
])
])
m4_popdef([AT_TEST])
m4_popdef([_AT_TEST])
## ------------------- ##
## C++: Named %union. ##
## ------------------- ##
m4_foreach([b4_skel], [[lalr1.cc], [glr.cc]],
[AT_SETUP([b4_skel: Named %union])
AT_DATA([input.y],
[%skeleton "]b4_skel["
%union foo { float fval; int ival; };
%%
exp: %empty;
])
AT_BISON_CHECK([input.y], 1, [],
[[input.y:2.8-10: error: named %union is invalid in C++
]])
AT_CLEANUP
])