mirror of
https://git.savannah.gnu.org/git/bison.git
synced 2026-03-09 12:23:04 +00:00
435575cb5e
Suggested by Joel E. Denny. http://lists.gnu.org/archive/html/bison-patches/2013-03/msg00016.html * data/bison.m4 (b4_percent_define_get_kind): New. (b4_variant_flag): Check that api.value.type is defined as the 'variant' keyword value. * data/c.m4 (_b4_value_type_setup_keyword): New. (b4_value_type_setup): Use it to simplify reading. Use b4_define_silent. Decode api.value.type, including its type. (b4_value_type_define): Likewise. * data/c++.m4 (b4_value_type_declare): Adjust the decoding of api.value.type, taking its kind into account. * doc/bison.texi: Adjust all the examples to the new syntax. * NEWS: Ditto. * tests/types.at: Adjust
231 lines
6.4 KiB
Plaintext
231 lines
6.4 KiB
Plaintext
# Value type. -*- Autotest -*-
|
|
|
|
# Copyright (C) 2013 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 <http://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:2.9-22: 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:2.9-22: 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)
|
|
# --------------------------------------
|
|
# Compile the grammar and check the expected result.
|
|
# BISON-DIRECTIVES are passed to AT_SETUP, contrary to MORE-BISON-DIRECTIVES.
|
|
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_FULL_COMPILE([[test]])
|
|
AT_PARSER_CHECK([./test], 0, [$6
|
|
], [stderr])
|
|
AT_BISON_OPTION_POPDEFS
|
|
AT_CLEANUP
|
|
])
|
|
|
|
m4_foreach([b4_skel], [[yacc.c], [glr.c], [lalr1.cc], [glr.cc]],
|
|
[# A built-in type.
|
|
AT_TEST([%skeleton "]b4_skel["
|
|
%define api.value.type {double}],
|
|
[],
|
|
['1' '2' { printf ("%2.1f\n", $1 + $2); }],
|
|
["12"],
|
|
[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"],
|
|
[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"],
|
|
[AT_VAL.ival = (res - '0') * 10;
|
|
AT_VAL.fval = (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_SKEL_CC_IF([[yyoutput << $$]],
|
|
[[fprintf (yyo, "%d", $$)]])[; } <up->ival>
|
|
],
|
|
['1' '2'
|
|
{
|
|
printf ("%d %d\n", $1, $<up->ival>2);
|
|
free ($<up>1);
|
|
free ($<up>2);
|
|
}],
|
|
["12"],
|
|
[AT_VAL.up = (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
|
|
AT_VAL.fval = .2f],
|
|
[10 0.2])
|
|
|
|
# A %union.
|
|
AT_TEST([%skeleton "]b4_skel["
|
|
%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
|
|
AT_VAL.fval = 0.2f],
|
|
[10 0.2])
|
|
|
|
# A Bison-defined union.
|
|
# The tokens names are not available directly in C++, we use their
|
|
# user number 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_SKEL_CC_IF([[yyoutput << $$]],
|
|
[[fprintf (yyo, "%d", $$)]])[; } <int>
|
|
%printer { ]AT_SKEL_CC_IF([[yyoutput << $$]],
|
|
[[fprintf (yyo, "%f", $$)]])[; } <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 << std::endl; }],
|
|
["12"],
|
|
[if (res == '1')
|
|
AT_VAL.build(10);
|
|
else
|
|
AT_VAL.build<std::string>("two");],
|
|
[10, two])])
|
|
])
|
|
|
|
m4_popdef([AT_TEST])
|