#!/usr/bin/env python
#
# Copyright (c) 2001, 2002 Steven Knight
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#

__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"

import os
import os.path
import string
import sys
import TestSCons

python = sys.executable

if sys.platform == 'win32':
    _exe = '.exe'
else:
    _exe = ''

yacc = None
for dir in string.split(os.environ['PATH'], os.pathsep):
    y = os.path.join(dir, 'yacc' + _exe)
    if os.path.exists(y):
        yacc = y
        break

test = TestSCons.TestSCons()

test.no_result(not yacc)

test.write('SConstruct', """
foo = Environment()
bar = Environment(YACCFLAGS = '-v')
foo.Program(target = 'foo', source = 'foo.y')
bar.Program(target = 'bar', source = 'bar.y')
""")

yacc = r"""
%%{
#include <stdio.h>

main()
{
    yyparse();
}

yyerror(s)
char *s;
{
    fprintf(stderr, "%%s\n", s);
}

yylex()
{
    int c;

    c = fgetc(stdin);
    return (c == EOF) ? 0 : c;
}
%%}
%%%%
input:	letter newline { printf("%s\n"); };
letter:  'a' | 'b';
newline: '\n';
"""

test.write('foo.y', yacc % 'foo.y')

test.write('bar.y', yacc % 'bar.y')

test.run(arguments = 'foo' + _exe, stderr = None)

test.fail_test(os.path.exists(test.workpath('foo.output'))
               or os.path.exists(test.workpath('y.output')))

test.run(program = test.workpath('foo'), stdin = "a\n", stdout = "foo.y\n")

test.run(arguments = 'bar' + _exe)

test.fail_test(not os.path.exists(test.workpath('bar.output'))
               and not os.path.exists(test.workpath('y.output')))

test.run(program = test.workpath('bar'), stdin = "b\n", stdout = "bar.y\n")

test.pass_test()