packages/deriver/tests/Unit/Deriver/Evaluator/Memory/StaticsTest.php
1<?php
2
3declare (strict_types=1);
4
5namespace Tests\Unit\Deriver\Evaluator\Memory;
6
7use Deriver\Deriver\Contributions;
8use Deriver\Deriver\DeriverConfig;
9use Deriver\Deriver\Evaluator\Call\Evaluators;
10use Deriver\Deriver\Evaluator\Call\Registrations;
11use Deriver\Deriver\Evaluator\Enumeration\Choices;
12use Deriver\Deriver\Evaluator\Evaluator;
13use Deriver\Deriver\Evaluator\EvaluatorConfig;
14use Deriver\Deriver\Evaluator\Index\DefinitionIndex;
15use Deriver\Deriver\Evaluator\Memory\Statics as Subject;
16use Deriver\Deriver\Evaluator\Request\Budget;
17use Deriver\Deriver\Evaluator\Scalar\Identity;
18use Deriver\Deriver\Evaluator\Scope\Context;
19use Deriver\Deriver\Evaluator\Scope\Frame;
20use Deriver\Deriver\Evaluator\TargetProfile;
21use Deriver\Deriver\Evaluator\Term;
22use Deriver\Deriver\Lowerer\Declaration\Index;
23use Deriver\Deriver\MicroEvaluatorConversion;
24use Deriver\Deriver\Parser\Node\File;
25use Deriver\Deriver\Parser\Parser;
26use Deriver\Deriver\Parser\ParserConfig;
27use Deriver\Deriver\Providers\ProviderExpansion;
28use Deriver\Deriver\Resolver\Resolver;
29use Deriver\Deriver\Sources\Path;
30use Deriver\Deriver\Sources\Source;
31use Deriver\Deriver\Sources\Sources;
32use PHPUnit\Framework\Attributes\CoversNothing;
33use PHPUnit\Framework\TestCase;
34
35#[CoversNothing]
36final class StaticsTest extends TestCase
37{
38 public function testIncomingPreservesUnknownHistory(): void
39 {
40 $source = 'function target(){static $n=0;return ++$n;}';
41 $configuration = new DeriverConfig();
42 $budget = new Budget();
43 $contributions = new Contributions();
44 $target = new TargetProfile($configuration->phpVersion, $configuration->integerBits, $configuration->floatPrecision);
45 $providers = new ProviderExpansion(new Sources([new Source('candidate.php', '<?php ' . $source)]), array_map(Term::fromNative(...), $configuration->environment), $contributions);
46 $contributions1 = $providers->contributions;
47 $evaluators = new Evaluators(new TargetProfile($configuration->phpVersion, $configuration->integerBits, $configuration->floatPrecision), new Registrations($contributions1->evaluators, $contributions1->providers, $contributions1->domains, $contributions1->intrinsics, $contributions1->stateSlots), $configuration->standardEvaluators);
48 $settings = new EvaluatorConfig($target, $providers->environment, $configuration->standardEvaluators, array_map((new MicroEvaluatorConversion())->convert(...), $configuration->evaluators));
49 $snapshotId = 'test';
50 $input = $providers->input;
51 $parser = new Parser(new ParserConfig($target->version));
52 $trees = array_map(static fn (Source $source1): File => (new Resolver())->resolve($parser->parse(new Source(Path::normalize($source1->path), $source1->contents, $source1->declarationsOnly))), iterator_to_array($input, false));
53 $program = new Index($snapshotId, $trees);
54 $engine = new Evaluator(new Context(new DefinitionIndex($program), $settings, $evaluators, $budget));
55 $symbol = 'target';
56 $graph = $engine->context->index->graph($symbol);
57 self::assertNotNull($graph);
58 $frame = new Frame($graph, 'source:' . $symbol);
59 $operation = 'local';
60 $instruction = array_values(array_filter($frame->graph->definitions, static fn ($instruction): bool => $instruction->operation === $operation))[0] ?? null;
61 self::assertNotNull($instruction);
62 $value = (new Subject())->incoming($engine, $frame, $instruction, 64);
63 self::assertSame('UNKNOWN_STATIC_HISTORY', $value->attributes['reason']);
64 }
65 public function testPreviousFollowsTheFirstCallInAKnownPrefix(): void
66 {
67 $source = 'function nextValue(){static $n=0;return ++$n;}function target(){nextValue();return nextValue();}';
68 $configuration = new DeriverConfig();
69 $budget = new Budget();
70 $contributions = new Contributions();
71 $target = new TargetProfile($configuration->phpVersion, $configuration->integerBits, $configuration->floatPrecision);
72 $providers = new ProviderExpansion(new Sources([new Source('candidate.php', '<?php ' . $source)]), array_map(Term::fromNative(...), $configuration->environment), $contributions);
73 $contributions1 = $providers->contributions;
74 $evaluators = new Evaluators(new TargetProfile($configuration->phpVersion, $configuration->integerBits, $configuration->floatPrecision), new Registrations($contributions1->evaluators, $contributions1->providers, $contributions1->domains, $contributions1->intrinsics, $contributions1->stateSlots), $configuration->standardEvaluators);
75 $settings = new EvaluatorConfig($target, $providers->environment, $configuration->standardEvaluators, array_map((new MicroEvaluatorConversion())->convert(...), $configuration->evaluators));
76 $snapshotId = 'test';
77 $input = $providers->input;
78 $parser = new Parser(new ParserConfig($target->version));
79 $trees = array_map(static fn (Source $source1): File => (new Resolver())->resolve($parser->parse(new Source(Path::normalize($source1->path), $source1->contents, $source1->declarationsOnly))), iterator_to_array($input, false));
80 $program = new Index($snapshotId, $trees);
81 $engine = new Evaluator(new Context(new DefinitionIndex($program), $settings, $evaluators, $budget));
82 $symbol = 'target';
83 $graph = $engine->context->index->graph($symbol);
84 self::assertNotNull($graph);
85 $alternatives = (new Choices())->alternatives($engine->returns(new Frame($graph, 'source:' . $symbol), 64));
86 $values = array_reduce(iterator_to_array($alternatives, false), static function (array $values, array $alternative): array {
87 [$value, $_] = $alternative;
88 $values[(new Identity())->key($value)] = $value;
89 return $values;
90 }, []);
91 self::assertCount(1, $values);
92 $resolvedValue = array_values($values)[0];
93 self::assertInstanceOf(Term::class, $resolvedValue);
94 self::assertSame(2, $resolvedValue->native());
95 }
96 public function testInitializedPreservesUnknownHistory(): void
97 {
98 $source = 'function target(){static $n=0;return ++$n;}';
99 $configuration = new DeriverConfig();
100 $budget = new Budget();
101 $contributions = new Contributions();
102 $target = new TargetProfile($configuration->phpVersion, $configuration->integerBits, $configuration->floatPrecision);
103 $providers = new ProviderExpansion(new Sources([new Source('candidate.php', '<?php ' . $source)]), array_map(Term::fromNative(...), $configuration->environment), $contributions);
104 $contributions1 = $providers->contributions;
105 $evaluators = new Evaluators(new TargetProfile($configuration->phpVersion, $configuration->integerBits, $configuration->floatPrecision), new Registrations($contributions1->evaluators, $contributions1->providers, $contributions1->domains, $contributions1->intrinsics, $contributions1->stateSlots), $configuration->standardEvaluators);
106 $settings = new EvaluatorConfig($target, $providers->environment, $configuration->standardEvaluators, array_map((new MicroEvaluatorConversion())->convert(...), $configuration->evaluators));
107 $snapshotId = 'test';
108 $input = $providers->input;
109 $parser = new Parser(new ParserConfig($target->version));
110 $trees = array_map(static fn (Source $source1): File => (new Resolver())->resolve($parser->parse(new Source(Path::normalize($source1->path), $source1->contents, $source1->declarationsOnly))), iterator_to_array($input, false));
111 $program = new Index($snapshotId, $trees);
112 $engine = new Evaluator(new Context(new DefinitionIndex($program), $settings, $evaluators, $budget));
113 $symbol = 'target';
114 $graph = $engine->context->index->graph($symbol);
115 self::assertNotNull($graph);
116 $frame = new Frame($graph, 'source:' . $symbol);
117 $operation = 'local';
118 $instruction = array_values(array_filter($frame->graph->definitions, static fn ($instruction): bool => $instruction->operation === $operation))[0] ?? null;
119 self::assertNotNull($instruction);
120 self::assertSame('static-initialized', (new Subject())->initialized($engine, $frame, $instruction, 64)->literal);
121 }
122}
123