<?php
/**
* Hoa
*
*
* @license
*
* New BSD License
*
* Copyright © 2007-2017, Hoa community. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the Hoa nor the names of its contributors may be
* used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS AND CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
namespace Hoa\Compiler\Test\Integration\Llk\Rule;
use Hoa\Compiler as LUT;
use Hoa\Compiler\Llk\Rule;
use Hoa\Compiler\Llk\Rule\Analyzer as SUT;
use Hoa\Test;
/**
* Class \Hoa\Compiler\Test\Integration\Llk\Rule\Analyzer.
*
* Test suite of the rule analyzer.
*
* @copyright Copyright © 2007-2017 Hoa community
* @license New BSD License
*/
class Analyzer extends Test\Integration\Suite
{
public function case_simple_kept_token()
{
return $this->_case_simple_token(true);
}
public function case_simple_skipped_token()
{
return $this->_case_simple_token(false);
}
protected function _case_simple_token($kept)
{
$this
->given(
$tokens = ['default' => ['foo' => 'bar']],
$ruleA = $kept ? '<foo>' : '::foo::',
$analyzer = new SUT($tokens),
$_ruleA = new Rule\Token('ruleA', 'foo', null, -1, $kept),
$_ruleA->setPPRepresentation($ruleA)
)
->when($result = $analyzer->analyzeRules(['ruleA' => $ruleA]))
->then
->array($result)
->isEqualTo([
'ruleA' => $_ruleA
]);
}
public function case_simple_named()
{
$this
->given(
$tokens = ['default' => ['foo' => 'bar']],
$rules = [
'ruleA' => 'ruleB()',
'ruleB' => '<foo>'
],
$analyzer = new SUT($tokens),
$_ruleA = new Rule\Concatenation('ruleA', ['ruleB']),
$_ruleA->setPPRepresentation($rules['ruleA']),
$_ruleB = new Rule\Token('ruleB', 'foo', null, -1, true),
$_ruleB->setPPRepresentation($rules['ruleB'])
)
->when($result = $analyzer->analyzeRules($rules))
->then
->array($result)
->isEqualTo([
'ruleA' => $_ruleA,
'ruleB' => $_ruleB
]);
}
public function case_simple_kept_unified_token()
{
return $this->_case_simple_unified_token(true);
}
public function case_simple_skipped_unified_token()
{
return $this->_case_simple_unified_token(false);
}
protected function _case_simple_unified_token($kept)
{
$this
->given(
$tokens = ['default' => ['foo' => 'bar']],
$ruleA = $kept ? '<foo[42]>' : '::foo[42]::',
$analyzer = new SUT($tokens),
$_ruleA = new Rule\Token('ruleA', 'foo', null, 42, $kept),
$_ruleA->setPPRepresentation($ruleA)
)
->when($result = $analyzer->analyzeRules(['ruleA' => $ruleA]))
->then
->array($result)
->isEqualTo([
'ruleA' => $_ruleA
]);
}
public function case_repetition_zero_or_one()
{
return $this->_case_repetition('?', 0, 1);
}
public function case_repetition_one_or_more()
{
return $this->_case_repetition('+', 1, -1);
}
public function case_repetition_zero_or_more()
{
return $this->_case_repetition('*', 0, -1);
}
public function case_repetition_n_to_m()
{
return $this->_case_repetition('{7,42}', 7, 42);
}
public function case_repetition_n_or_more()
{
return $this->_case_repetition('{7,}', 7, -1);
}
public function case_repetition_exactly_n()
{
return $this->_case_repetition('{7}', 7, 7);
}
protected function _case_repetition($quantifier, $min, $max)
{
$this
->given(
$tokens = ['default' => ['foo' => 'bar']],
$ruleA = '<foo>' . $quantifier,
$analyzer = new SUT($tokens),
$_ruleA = new Rule\Repetition('ruleA', $min, $max, 0, null),
$_ruleA->setPPRepresentation($ruleA),
$_rule0 = new Rule\Token(0, 'foo', null, -1, true)
)
->when($result = $analyzer->analyzeRules(['ruleA' => $ruleA]))
->then
->array($result)
->isEqualTo([
'0' => $_rule0,
'ruleA' => $_ruleA
]);
}
public function case_concatenation()
{
$this
->given(
$tokens = ['default' => ['foo' => 'bar', 'baz' => 'qux']],
$ruleA = '<foo> <baz>',
$analyzer = new SUT($tokens),
$_ruleA = new Rule\Concatenation('ruleA', [0, 1], null),
$_ruleA->setPPRepresentation($ruleA),
$_rule0 = new Rule\Token(0, 'foo', null, -1, true),
$_rule1 = new Rule\Token(1, 'baz', null, -1, true)
)
->when($result = $analyzer->analyzeRules(['ruleA' => $ruleA]))
->then
->array($result)
->isEqualTo([
0 => $_rule0,
1 => $_rule1,
'ruleA' => $_ruleA
]);
}
public function case_choice()
{
$this
->given(
$tokens = ['default' => ['foo' => 'bar', 'baz' => 'qux']],
$ruleA = '<foo> | <baz>',
$analyzer = new SUT($tokens),
$_ruleA = new Rule\Choice('ruleA', [0, 1], null),
$_ruleA->setPPRepresentation($ruleA),
$_rule0 = new Rule\Token(0, 'foo', null, -1, true),
$_rule1 = new Rule\Token(1, 'baz', null, -1, true)
)
->when($result = $analyzer->analyzeRules(['ruleA' => $ruleA]))
->then
->array($result)
->isEqualTo([
0 => $_rule0,
1 => $_rule1,
'ruleA' => $_ruleA
]);
}
public function case_rule()
{
$this
->given(
$tokens = ['default' => ['foo' => 'bar', 'baz' => 'qux']],
$ruleA = '<foo> | <baz>',
$analyzer = new SUT($tokens),
$_ruleA = new Rule\Choice('ruleA', [0, 1], null),
$_ruleA->setPPRepresentation($ruleA),
$_rule0 = new Rule\Token(0, 'foo', null, -1, true),
$_rule1 = new Rule\Token(1, 'baz', null, -1, true)
)
->when($result = $analyzer->analyzeRules(['ruleA' => $ruleA]))
->then
->array($result)
->isEqualTo([
0 => $_rule0,
1 => $_rule1,
'ruleA' => $_ruleA
]);
}
public function case_full()
{
$this
->given(
$tokens = ['default' => ['foo' => 'bar', 'baz' => 'qux']],
$ruleA = '<foo>+ | ruleB() ::foo::',
$ruleB = '<baz> ruleA()',
$analyzer = new SUT($tokens),
$_rule0 = new Rule\Token(0, 'foo', null, -1, true),
$_rule1 = new Rule\Repetition('1', 1, -1, '0', null),
$_rule2 = new Rule\Token(2, 'foo', null, -1, false),
$_rule3 = new Rule\Concatenation('3', ['ruleB', 2]),
$_ruleA = new Rule\Choice('ruleA', [1, 3], null),
$_ruleA->setPPRepresentation($ruleA),
$_rule5 = new Rule\Token(5, 'baz', null, -1, true),
$_ruleB = new Rule\Concatenation('ruleB', [5, 'ruleA']),
$_ruleB->setPPRepresentation($ruleB)
)
->when($result = $analyzer->analyzeRules(['ruleA' => $ruleA, 'ruleB' => $ruleB]))
->then
->array($result)
->isEqualTo([
0 => $_rule0,
1 => $_rule1,
2 => $_rule2,
3 => $_rule3,
'ruleA' => $_ruleA,
5 => $_rule5,
'ruleB' => $_ruleB
]);
}
public function case_no_rule()
{
$this
->given($analyzer = new SUT([]))
->exception(function () use ($analyzer) {
$analyzer->analyzeRules([]);
})
->isInstanceOf(LUT\Exception::class)
->hasMessage('No rules specified!');
}
public function case_error_while_parsing_rule()
{
$this
->given(
$tokens = ['default' => ['foo' => 'bar']],
$ruleA = '<foo>{2,1}',
$analyzer = new SUT($tokens)
)
->exception(function () use ($analyzer, $ruleA) {
$analyzer->analyzeRules(['ruleA' => $ruleA]);
})
->isInstanceOf(LUT\Exception::class)
->hasMessage(
'Upper bound 1 must be greater or equal to lower bound ' .
'2 in rule ruleA.'
);
}
public function case_kept_token_does_not_exist()
{
$this
->given(
$tokens = [],
$ruleA = '<foo>',
$analyzer = new SUT($tokens)
)
->exception(function () use ($analyzer, $ruleA) {
$analyzer->analyzeRules(['ruleA' => $ruleA]);
})
->isInstanceOf(LUT\Exception::class)
->hasMessage('Token <foo> does not exist in rule ruleA.');
}
public function case_skipped_token_does_not_exist()
{
$this
->given(
$tokens = [],
$ruleA = '::foo::',
$analyzer = new SUT($tokens)
)
->exception(function () use ($analyzer, $ruleA) {
$analyzer->analyzeRules(['ruleA' => $ruleA]);
})
->isInstanceOf(LUT\Exception::class)
->hasMessage('Token ::foo:: does not exist in rule ruleA.');
}
public function case_rule_does_not_exist()
{
$this
->given(
$tokens = [],
$ruleA = 'ruleB()',
$analyzer = new SUT($tokens)
)
->exception(function () use ($analyzer, $ruleA) {
$analyzer->analyzeRules(['ruleA' => $ruleA]);
})
->isInstanceOf(LUT\Exception::class)
->hasMessage(
'Cannot call rule ruleB() in rule ruleA because it does not exist.'
);
}
}