mirror of
https://github.com/danog/psalm.git
synced 2024-12-12 09:19:40 +01:00
1463 lines
56 KiB
PHP
1463 lines
56 KiB
PHP
<?php
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namespace Psalm\Internal\Analyzer;
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use PhpParser;
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use Psalm\Internal\Analyzer\Statements\Block\DoAnalyzer;
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use Psalm\Internal\Analyzer\Statements\Block\ForAnalyzer;
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use Psalm\Internal\Analyzer\Statements\Block\ForeachAnalyzer;
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use Psalm\Internal\Analyzer\Statements\Block\IfAnalyzer;
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use Psalm\Internal\Analyzer\Statements\Block\SwitchAnalyzer;
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use Psalm\Internal\Analyzer\Statements\Block\TryAnalyzer;
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use Psalm\Internal\Analyzer\Statements\Block\WhileAnalyzer;
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use Psalm\Internal\Analyzer\Statements\Expression\Assignment\PropertyAssignmentAnalyzer;
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use Psalm\Internal\Analyzer\Statements\Expression\BinaryOpAnalyzer;
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use Psalm\Internal\Analyzer\Statements\Expression\CallAnalyzer;
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use Psalm\Internal\Analyzer\Statements\Expression\Fetch\ConstFetchAnalyzer;
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use Psalm\Internal\Analyzer\Statements\Expression\Fetch\VariableFetchAnalyzer;
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use Psalm\Internal\Analyzer\Statements\ExpressionAnalyzer;
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use Psalm\Internal\Analyzer\Statements\ReturnAnalyzer;
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use Psalm\Internal\Analyzer\Statements\ThrowAnalyzer;
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use Psalm\Codebase;
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use Psalm\CodeLocation;
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use Psalm\Config;
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use Psalm\Context;
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use Psalm\DocComment;
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use Psalm\Exception\DocblockParseException;
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use Psalm\FileManipulation;
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use Psalm\Internal\FileManipulation\FileManipulationBuffer;
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use Psalm\Issue\ContinueOutsideLoop;
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use Psalm\Issue\ForbiddenCode;
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use Psalm\Issue\ForbiddenEcho;
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use Psalm\Issue\InvalidDocblock;
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use Psalm\Issue\InvalidGlobal;
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use Psalm\Issue\UnevaluatedCode;
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use Psalm\Issue\UnrecognizedStatement;
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use Psalm\Issue\UnusedVariable;
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use Psalm\IssueBuffer;
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use Psalm\Internal\Scope\LoopScope;
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use Psalm\StatementsSource;
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use Psalm\Type;
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/**
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* @internal
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*/
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class StatementsAnalyzer extends SourceAnalyzer implements StatementsSource
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{
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/**
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* @var SourceAnalyzer
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*/
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protected $source;
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/**
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* @var FileAnalyzer
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*/
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protected $file_analyzer;
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/**
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* @var Codebase
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*/
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protected $codebase;
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/**
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* @var array<string, CodeLocation>
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*/
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private $all_vars = [];
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/**
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* @var array<string, int>
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*/
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private $var_branch_points = [];
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/**
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* Possibly undefined variables should be initialised if we're altering code
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*
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* @var array<string, int>|null
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*/
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private $vars_to_initialize;
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/**
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* @var array<string, FunctionAnalyzer>
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*/
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private $function_analyzers = [];
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/**
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* @var array<string, array{0: string, 1: CodeLocation}>
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*/
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private $unused_var_locations = [];
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/**
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* @var array<string, bool>
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*/
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private $used_var_locations = [];
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/**
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* @param SourceAnalyzer $source
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*/
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public function __construct(SourceAnalyzer $source)
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{
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$this->source = $source;
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$this->file_analyzer = $source->getFileAnalyzer();
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$this->codebase = $source->getCodebase();
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}
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/**
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* Checks an array of statements for validity
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*
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* @param array<PhpParser\Node\Stmt> $stmts
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* @param Context $context
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* @param Context|null $global_context
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* @param bool $root_scope
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*
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* @return null|false
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*/
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public function analyze(
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array $stmts,
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Context $context,
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Context $global_context = null,
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$root_scope = false
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) {
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$has_returned = false;
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// hoist functions to the top
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foreach ($stmts as $stmt) {
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if ($stmt instanceof PhpParser\Node\Stmt\Function_) {
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$function_analyzer = new FunctionAnalyzer($stmt, $this->source);
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$this->function_analyzers[strtolower($stmt->name->name)] = $function_analyzer;
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}
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}
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$project_analyzer = $this->getFileAnalyzer()->project_analyzer;
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$codebase = $project_analyzer->getCodebase();
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if ($codebase->config->hoist_constants) {
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foreach ($stmts as $stmt) {
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if ($stmt instanceof PhpParser\Node\Stmt\Const_) {
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foreach ($stmt->consts as $const) {
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$this->setConstType(
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$const->name->name,
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self::getSimpleType($codebase, $const->value, $this->getAliases(), $this)
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?: Type::getMixed(),
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$context
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);
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}
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} elseif ($stmt instanceof PhpParser\Node\Stmt\Expression
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&& $stmt->expr instanceof PhpParser\Node\Expr\FuncCall
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&& $stmt->expr->name instanceof PhpParser\Node\Name
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&& $stmt->expr->name->parts === ['define']
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&& isset($stmt->expr->args[1])
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&& $stmt->expr->args[0]->value instanceof PhpParser\Node\Scalar\String_
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) {
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$const_name = $stmt->expr->args[0]->value->value;
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$this->setConstType(
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$const_name,
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self::getSimpleType($codebase, $stmt->expr->args[1]->value, $this->getAliases(), $this)
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?: Type::getMixed(),
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$context
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);
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}
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}
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}
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$original_context = null;
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if ($context->loop_scope) {
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$original_context = clone $context->loop_scope->loop_parent_context;
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}
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$plugin_classes = $codebase->config->after_statement_checks;
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foreach ($stmts as $stmt) {
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if ($has_returned && !($stmt instanceof PhpParser\Node\Stmt\Nop) &&
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!($stmt instanceof PhpParser\Node\Stmt\InlineHTML)
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) {
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if ($context->collect_references) {
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if (IssueBuffer::accepts(
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new UnevaluatedCode(
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'Expressions after return/throw/continue',
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new CodeLocation($this->source, $stmt)
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),
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$this->source->getSuppressedIssues()
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)) {
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return false;
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}
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}
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break;
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}
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if ($project_analyzer->debug_lines) {
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echo $this->getFilePath() . ':' . $stmt->getLine() . "\n";
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}
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/*
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if (isset($context->vars_in_scope['$array']) && !$stmt instanceof PhpParser\Node\Stmt\Nop) {
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var_dump($stmt->getLine(), $context->vars_in_scope['$array']);
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}
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*/
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$new_issues = null;
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if ($docblock = $stmt->getDocComment()) {
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try {
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$comments = DocComment::parse((string)$docblock);
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} catch (DocblockParseException $e) {
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if (IssueBuffer::accepts(
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new InvalidDocblock(
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(string)$e->getMessage(),
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new CodeLocation($this->getSource(), $stmt, null, true)
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)
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)) {
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// fall through
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}
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$comments = [];
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}
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if (isset($comments['specials']['psalm-suppress'])) {
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$suppressed = array_filter(
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array_map(
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/**
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* @param string $line
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*
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* @return string
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*/
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function ($line) {
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return explode(' ', trim($line))[0];
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},
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$comments['specials']['psalm-suppress']
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)
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);
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if ($suppressed) {
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$new_issues = array_diff($suppressed, $this->source->getSuppressedIssues());
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/** @psalm-suppress MixedTypeCoercion */
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$this->addSuppressedIssues($new_issues);
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}
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}
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}
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if ($stmt instanceof PhpParser\Node\Stmt\If_) {
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if (IfAnalyzer::analyze($this, $stmt, $context) === false) {
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return false;
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}
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} elseif ($stmt instanceof PhpParser\Node\Stmt\TryCatch) {
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if (TryAnalyzer::analyze($this, $stmt, $context) === false) {
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return false;
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}
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} elseif ($stmt instanceof PhpParser\Node\Stmt\For_) {
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if (ForAnalyzer::analyze($this, $stmt, $context) === false) {
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return false;
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}
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} elseif ($stmt instanceof PhpParser\Node\Stmt\Foreach_) {
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if (ForeachAnalyzer::analyze($this, $stmt, $context) === false) {
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return false;
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}
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} elseif ($stmt instanceof PhpParser\Node\Stmt\While_) {
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if (WhileAnalyzer::analyze($this, $stmt, $context) === false) {
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return false;
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}
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} elseif ($stmt instanceof PhpParser\Node\Stmt\Do_) {
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DoAnalyzer::analyze($this, $stmt, $context);
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} elseif ($stmt instanceof PhpParser\Node\Stmt\Const_) {
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$this->analyzeConstAssignment($stmt, $context);
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} elseif ($stmt instanceof PhpParser\Node\Stmt\Unset_) {
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$this->analyzeUnset($stmt, $context);
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} elseif ($stmt instanceof PhpParser\Node\Stmt\Return_) {
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$has_returned = true;
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ReturnAnalyzer::analyze($this, $stmt, $context);
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} elseif ($stmt instanceof PhpParser\Node\Stmt\Throw_) {
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$has_returned = true;
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ThrowAnalyzer::analyze($this, $stmt, $context);
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} elseif ($stmt instanceof PhpParser\Node\Stmt\Switch_) {
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SwitchAnalyzer::analyze($this, $stmt, $context);
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} elseif ($stmt instanceof PhpParser\Node\Stmt\Break_) {
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$loop_scope = $context->loop_scope;
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if ($loop_scope && $original_context) {
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if ($context->inside_case && !$stmt->num) {
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$loop_scope->final_actions[] = ScopeAnalyzer::ACTION_LEAVE_SWITCH;
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} else {
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$loop_scope->final_actions[] = ScopeAnalyzer::ACTION_BREAK;
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}
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$redefined_vars = $context->getRedefinedVars($loop_scope->loop_parent_context->vars_in_scope);
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if ($loop_scope->possibly_redefined_loop_parent_vars === null) {
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$loop_scope->possibly_redefined_loop_parent_vars = $redefined_vars;
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} else {
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foreach ($redefined_vars as $var => $type) {
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if ($type->hasMixed()) {
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$loop_scope->possibly_redefined_loop_parent_vars[$var] = $type;
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} elseif (isset($loop_scope->possibly_redefined_loop_parent_vars[$var])) {
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$loop_scope->possibly_redefined_loop_parent_vars[$var] = Type::combineUnionTypes(
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$type,
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$loop_scope->possibly_redefined_loop_parent_vars[$var]
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);
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} else {
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$loop_scope->possibly_redefined_loop_parent_vars[$var] = $type;
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}
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}
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}
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if ($loop_scope->iteration_count === 0) {
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foreach ($context->vars_in_scope as $var_id => $type) {
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if (!isset($loop_scope->loop_parent_context->vars_in_scope[$var_id])) {
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if (isset($loop_scope->possibly_defined_loop_parent_vars[$var_id])) {
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$loop_scope->possibly_defined_loop_parent_vars[$var_id] = Type::combineUnionTypes(
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$type,
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$loop_scope->possibly_defined_loop_parent_vars[$var_id]
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);
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} else {
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$loop_scope->possibly_defined_loop_parent_vars[$var_id] = $type;
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}
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}
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}
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}
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if ($context->collect_references && (!$context->case_scope || $stmt->num)) {
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foreach ($context->unreferenced_vars as $var_id => $locations) {
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if (isset($loop_scope->unreferenced_vars[$var_id])) {
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$loop_scope->unreferenced_vars[$var_id] += $locations;
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} else {
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$loop_scope->unreferenced_vars[$var_id] = $locations;
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}
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}
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}
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}
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$case_scope = $context->case_scope;
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if ($case_scope) {
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foreach ($context->vars_in_scope as $var_id => $type) {
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if ($case_scope->parent_context !== $context) {
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if ($case_scope->break_vars === null) {
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$case_scope->break_vars = [];
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}
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foreach ($context->vars_in_scope as $var_id => $type) {
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if (isset($case_scope->break_vars[$var_id])) {
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$case_scope->break_vars[$var_id] = Type::combineUnionTypes(
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$type,
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$case_scope->break_vars[$var_id]
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);
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} else {
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$case_scope->break_vars[$var_id] = $type;
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}
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}
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}
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}
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if ($context->collect_references) {
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foreach ($context->unreferenced_vars as $var_id => $locations) {
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if (isset($case_scope->unreferenced_vars[$var_id])) {
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$case_scope->unreferenced_vars[$var_id] += $locations;
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} else {
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$case_scope->unreferenced_vars[$var_id] = $locations;
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}
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}
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}
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}
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$has_returned = true;
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} elseif ($stmt instanceof PhpParser\Node\Stmt\Continue_) {
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$loop_scope = $context->loop_scope;
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if ($loop_scope === null) {
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if (!$context->inside_case) {
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if (IssueBuffer::accepts(
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new ContinueOutsideLoop(
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'Continue call outside loop context',
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new CodeLocation($this->source, $stmt)
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),
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$this->source->getSuppressedIssues()
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)) {
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return false;
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}
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}
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} elseif ($original_context) {
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if ($context->inside_case && !$stmt->num) {
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$loop_scope->final_actions[] = ScopeAnalyzer::ACTION_LEAVE_SWITCH;
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} else {
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$loop_scope->final_actions[] = ScopeAnalyzer::ACTION_CONTINUE;
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}
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$redefined_vars = $context->getRedefinedVars($original_context->vars_in_scope);
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if ($loop_scope->redefined_loop_vars === null) {
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$loop_scope->redefined_loop_vars = $redefined_vars;
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} else {
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foreach ($loop_scope->redefined_loop_vars as $redefined_var => $type) {
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if (!isset($redefined_vars[$redefined_var])) {
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unset($loop_scope->redefined_loop_vars[$redefined_var]);
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} else {
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$loop_scope->redefined_loop_vars[$redefined_var] = Type::combineUnionTypes(
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$redefined_vars[$redefined_var],
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$type
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);
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}
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}
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}
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foreach ($redefined_vars as $var => $type) {
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if ($type->hasMixed()) {
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$loop_scope->possibly_redefined_loop_vars[$var] = $type;
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} elseif (isset($loop_scope->possibly_redefined_loop_vars[$var])) {
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$loop_scope->possibly_redefined_loop_vars[$var] = Type::combineUnionTypes(
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$type,
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$loop_scope->possibly_redefined_loop_vars[$var]
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);
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} else {
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$loop_scope->possibly_redefined_loop_vars[$var] = $type;
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}
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}
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if ($context->collect_references && (!$context->case_scope || $stmt->num)) {
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foreach ($context->unreferenced_vars as $var_id => $locations) {
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if (isset($loop_scope->possibly_unreferenced_vars[$var_id])) {
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$loop_scope->possibly_unreferenced_vars[$var_id] += $locations;
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} else {
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$loop_scope->possibly_unreferenced_vars[$var_id] = $locations;
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}
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}
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}
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}
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$case_scope = $context->case_scope;
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if ($case_scope && $context->collect_references) {
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foreach ($context->unreferenced_vars as $var_id => $locations) {
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if (isset($case_scope->unreferenced_vars[$var_id])) {
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$case_scope->unreferenced_vars[$var_id] += $locations;
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} else {
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$case_scope->unreferenced_vars[$var_id] = $locations;
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}
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}
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}
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$has_returned = true;
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} elseif ($stmt instanceof PhpParser\Node\Stmt\Static_) {
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$this->analyzeStatic($stmt, $context);
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} elseif ($stmt instanceof PhpParser\Node\Stmt\Echo_) {
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foreach ($stmt->exprs as $i => $expr) {
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ExpressionAnalyzer::analyze($this, $expr, $context);
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|
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if (isset($expr->inferredType)) {
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if (CallAnalyzer::checkFunctionArgumentType(
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$this,
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$expr->inferredType,
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|
Type::getString(),
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|
'echo',
|
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(int)$i,
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new CodeLocation($this->getSource(), $expr),
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$expr,
|
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$context
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) === false) {
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return false;
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}
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}
|
|
}
|
|
|
|
if ($codebase->config->forbid_echo) {
|
|
if (IssueBuffer::accepts(
|
|
new ForbiddenEcho(
|
|
'Use of echo',
|
|
new CodeLocation($this->source, $stmt)
|
|
),
|
|
$this->source->getSuppressedIssues()
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|
)) {
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return false;
|
|
}
|
|
} elseif (isset($codebase->config->forbidden_functions['echo'])) {
|
|
if (IssueBuffer::accepts(
|
|
new ForbiddenCode(
|
|
'Use of echo',
|
|
new CodeLocation($this->source, $stmt)
|
|
),
|
|
$this->source->getSuppressedIssues()
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)) {
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return false;
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}
|
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}
|
|
} elseif ($stmt instanceof PhpParser\Node\Stmt\Function_) {
|
|
foreach ($stmt->stmts as $function_stmt) {
|
|
if ($function_stmt instanceof PhpParser\Node\Stmt\Global_) {
|
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foreach ($function_stmt->vars as $var) {
|
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if ($var instanceof PhpParser\Node\Expr\Variable) {
|
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if (is_string($var->name)) {
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$var_id = '$' . $var->name;
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|
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// registers variable in global context
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$context->hasVariable($var_id, $this);
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}
|
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}
|
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}
|
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} elseif (!$function_stmt instanceof PhpParser\Node\Stmt\Nop) {
|
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break;
|
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}
|
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}
|
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|
|
if (!$codebase->register_stub_files
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|
&& !$codebase->register_autoload_files
|
|
) {
|
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$function_id = strtolower($stmt->name->name);
|
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$function_context = new Context($context->self);
|
|
$config = Config::getInstance();
|
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$function_context->collect_references = $codebase->collect_references;
|
|
$function_context->collect_exceptions = $config->check_for_throws_docblock;
|
|
$this->function_analyzers[$function_id]->analyze($function_context, $context);
|
|
|
|
if ($config->reportIssueInFile('InvalidReturnType', $this->getFilePath())) {
|
|
$method_id = $this->function_analyzers[$function_id]->getMethodId();
|
|
|
|
$function_storage = $codebase->functions->getStorage(
|
|
$this,
|
|
$method_id
|
|
);
|
|
|
|
$return_type = $function_storage->return_type;
|
|
$return_type_location = $function_storage->return_type_location;
|
|
|
|
$this->function_analyzers[$function_id]->verifyReturnType(
|
|
$this,
|
|
$return_type,
|
|
$this->getFQCLN(),
|
|
$return_type_location
|
|
);
|
|
}
|
|
}
|
|
} elseif ($stmt instanceof PhpParser\Node\Stmt\Expression) {
|
|
if (ExpressionAnalyzer::analyze($this, $stmt->expr, $context, false, $global_context) === false) {
|
|
return false;
|
|
}
|
|
} elseif ($stmt instanceof PhpParser\Node\Stmt\InlineHTML) {
|
|
// do nothing
|
|
} elseif ($stmt instanceof PhpParser\Node\Stmt\Global_) {
|
|
if (!$context->collect_initializations && !$global_context) {
|
|
if (IssueBuffer::accepts(
|
|
new InvalidGlobal(
|
|
'Cannot use global scope here',
|
|
new CodeLocation($this->source, $stmt)
|
|
),
|
|
$this->source->getSuppressedIssues()
|
|
)) {
|
|
// fall through
|
|
}
|
|
}
|
|
|
|
$source = $this->getSource();
|
|
$function_storage = $source instanceof FunctionLikeAnalyzer
|
|
? $source->getFunctionLikeStorage($this)
|
|
: null;
|
|
|
|
foreach ($stmt->vars as $var) {
|
|
if ($var instanceof PhpParser\Node\Expr\Variable) {
|
|
if (is_string($var->name)) {
|
|
$var_id = '$' . $var->name;
|
|
|
|
if ($var->name === 'argv' || $var->name === 'argc') {
|
|
if ($var->name === 'argv') {
|
|
$context->vars_in_scope[$var_id] = new Type\Union([
|
|
new Type\Atomic\TArray([
|
|
Type::getInt(),
|
|
Type::getString(),
|
|
]),
|
|
]);
|
|
} else {
|
|
$context->vars_in_scope[$var_id] = Type::getInt();
|
|
}
|
|
} elseif (isset($function_storage->global_types[$var_id])) {
|
|
$context->vars_in_scope[$var_id] = clone $function_storage->global_types[$var_id];
|
|
$context->vars_possibly_in_scope[$var_id] = true;
|
|
} else {
|
|
$context->vars_in_scope[$var_id] =
|
|
$global_context && $global_context->hasVariable($var_id, $this)
|
|
? clone $global_context->vars_in_scope[$var_id]
|
|
: Type::getMixed();
|
|
|
|
$context->vars_possibly_in_scope[$var_id] = true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
} elseif ($stmt instanceof PhpParser\Node\Stmt\Property) {
|
|
foreach ($stmt->props as $prop) {
|
|
if ($prop->default) {
|
|
ExpressionAnalyzer::analyze($this, $prop->default, $context);
|
|
|
|
if (isset($prop->default->inferredType)) {
|
|
if (!$stmt->isStatic()) {
|
|
if (PropertyAssignmentAnalyzer::analyzeInstance(
|
|
$this,
|
|
$prop,
|
|
$prop->name->name,
|
|
$prop->default,
|
|
$prop->default->inferredType,
|
|
$context
|
|
) === false) {
|
|
// fall through
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
} elseif ($stmt instanceof PhpParser\Node\Stmt\ClassConst) {
|
|
$const_visibility = \ReflectionProperty::IS_PUBLIC;
|
|
|
|
if ($stmt->isProtected()) {
|
|
$const_visibility = \ReflectionProperty::IS_PROTECTED;
|
|
}
|
|
|
|
if ($stmt->isPrivate()) {
|
|
$const_visibility = \ReflectionProperty::IS_PRIVATE;
|
|
}
|
|
|
|
foreach ($stmt->consts as $const) {
|
|
ExpressionAnalyzer::analyze($this, $const->value, $context);
|
|
|
|
if (isset($const->value->inferredType) && !$const->value->inferredType->hasMixed()) {
|
|
$codebase->classlikes->setConstantType(
|
|
(string)$this->getFQCLN(),
|
|
$const->name->name,
|
|
$const->value->inferredType,
|
|
$const_visibility
|
|
);
|
|
}
|
|
}
|
|
} elseif ($stmt instanceof PhpParser\Node\Stmt\Class_) {
|
|
try {
|
|
$class_analyzer = new ClassAnalyzer($stmt, $this->source, $stmt->name ? $stmt->name->name : null);
|
|
$class_analyzer->analyze(null, $global_context);
|
|
} catch (\InvalidArgumentException $e) {
|
|
// disregard this exception, we'll likely see it elsewhere in the form
|
|
// of an issue
|
|
}
|
|
} elseif ($stmt instanceof PhpParser\Node\Stmt\Nop) {
|
|
if ((string)$stmt->getDocComment()) {
|
|
$var_comments = [];
|
|
|
|
try {
|
|
$var_comments = CommentAnalyzer::getTypeFromComment(
|
|
(string)$stmt->getDocComment(),
|
|
$this->getSource(),
|
|
$this->getSource()->getAliases(),
|
|
$this->getSource()->getTemplateTypeMap()
|
|
);
|
|
} catch (DocblockParseException $e) {
|
|
if (IssueBuffer::accepts(
|
|
new InvalidDocblock(
|
|
(string)$e->getMessage(),
|
|
new CodeLocation($this->getSource(), $stmt, null, true)
|
|
)
|
|
)) {
|
|
// fall through
|
|
}
|
|
}
|
|
|
|
foreach ($var_comments as $var_comment) {
|
|
if (!$var_comment->var_id) {
|
|
continue;
|
|
}
|
|
|
|
$comment_type = ExpressionAnalyzer::fleshOutType(
|
|
$codebase,
|
|
$var_comment->type,
|
|
$context->self
|
|
);
|
|
|
|
$context->vars_in_scope[$var_comment->var_id] = $comment_type;
|
|
}
|
|
}
|
|
} elseif ($stmt instanceof PhpParser\Node\Stmt\Goto_) {
|
|
// do nothing
|
|
} elseif ($stmt instanceof PhpParser\Node\Stmt\Label) {
|
|
// do nothing
|
|
} elseif ($stmt instanceof PhpParser\Node\Stmt\Declare_) {
|
|
foreach ($stmt->declares as $declaration) {
|
|
if ((string) $declaration->key === 'strict_types'
|
|
&& $declaration->value instanceof PhpParser\Node\Scalar\LNumber
|
|
&& $declaration->value->value === 1
|
|
) {
|
|
$context->strict_types = true;
|
|
}
|
|
}
|
|
} else {
|
|
if (IssueBuffer::accepts(
|
|
new UnrecognizedStatement(
|
|
'Psalm does not understand ' . get_class($stmt),
|
|
new CodeLocation($this->source, $stmt)
|
|
),
|
|
$this->getSuppressedIssues()
|
|
)) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if ($context->loop_scope
|
|
&& $context->loop_scope->final_actions
|
|
&& !in_array(ScopeAnalyzer::ACTION_NONE, $context->loop_scope->final_actions, true)
|
|
) {
|
|
//$has_returned = true;
|
|
}
|
|
|
|
if ($plugin_classes) {
|
|
$file_manipulations = [];
|
|
|
|
foreach ($plugin_classes as $plugin_fq_class_name) {
|
|
if ($plugin_fq_class_name::afterStatementAnalysis(
|
|
$stmt,
|
|
$context,
|
|
$this->getSource(),
|
|
$codebase,
|
|
$file_manipulations
|
|
) === false) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if ($file_manipulations) {
|
|
/** @psalm-suppress MixedTypeCoercion */
|
|
FileManipulationBuffer::add($this->getFilePath(), $file_manipulations);
|
|
}
|
|
}
|
|
|
|
if ($new_issues) {
|
|
/** @psalm-suppress MixedTypeCoercion */
|
|
$this->removeSuppressedIssues($new_issues);
|
|
}
|
|
}
|
|
|
|
if ($root_scope
|
|
&& $context->collect_references
|
|
&& !$context->collect_initializations
|
|
&& $codebase->find_unused_code
|
|
&& $context->check_variables
|
|
) {
|
|
$this->checkUnreferencedVars();
|
|
}
|
|
|
|
if ($codebase->alter_code && $root_scope && $this->vars_to_initialize) {
|
|
$file_contents = $codebase->getFileContents($this->getFilePath());
|
|
|
|
foreach ($this->vars_to_initialize as $var_id => $branch_point) {
|
|
$newline_pos = (int)strrpos($file_contents, "\n", $branch_point - strlen($file_contents)) + 1;
|
|
$indentation = substr($file_contents, $newline_pos, $branch_point - $newline_pos);
|
|
FileManipulationBuffer::add($this->getFilePath(), [
|
|
new FileManipulation($branch_point, $branch_point, $var_id . ' = null;' . "\n" . $indentation),
|
|
]);
|
|
}
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* @return void
|
|
*/
|
|
public function checkUnreferencedVars()
|
|
{
|
|
$source = $this->getSource();
|
|
$function_storage = $source instanceof FunctionLikeAnalyzer ? $source->getFunctionLikeStorage($this) : null;
|
|
|
|
foreach ($this->unused_var_locations as $hash => list($var_id, $original_location)) {
|
|
if ($var_id === '$_' || isset($this->used_var_locations[$hash])) {
|
|
continue;
|
|
}
|
|
|
|
if (!$function_storage || !array_key_exists(substr($var_id, 1), $function_storage->param_types)) {
|
|
if (IssueBuffer::accepts(
|
|
new UnusedVariable(
|
|
'Variable ' . $var_id . ' is never referenced',
|
|
$original_location
|
|
),
|
|
$this->getSuppressedIssues()
|
|
)) {
|
|
// fall through
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @return void
|
|
*/
|
|
private function analyzeUnset(PhpParser\Node\Stmt\Unset_ $stmt, Context $context)
|
|
{
|
|
$context->inside_unset = true;
|
|
|
|
foreach ($stmt->vars as $var) {
|
|
ExpressionAnalyzer::analyze($this, $var, $context);
|
|
|
|
$var_id = ExpressionAnalyzer::getArrayVarId(
|
|
$var,
|
|
$this->getFQCLN(),
|
|
$this
|
|
);
|
|
|
|
if ($var_id) {
|
|
$context->remove($var_id);
|
|
}
|
|
|
|
if ($var instanceof PhpParser\Node\Expr\ArrayDimFetch && $var->dim) {
|
|
$root_var_id = ExpressionAnalyzer::getArrayVarId(
|
|
$var->var,
|
|
$this->getFQCLN(),
|
|
$this
|
|
);
|
|
|
|
if ($root_var_id && isset($context->vars_in_scope[$root_var_id])) {
|
|
$root_type = clone $context->vars_in_scope[$root_var_id];
|
|
|
|
foreach ($root_type->getTypes() as $atomic_root_type) {
|
|
if ($atomic_root_type instanceof Type\Atomic\ObjectLike) {
|
|
if ($var->dim instanceof PhpParser\Node\Scalar\String_
|
|
|| $var->dim instanceof PhpParser\Node\Scalar\LNumber
|
|
) {
|
|
if (isset($atomic_root_type->properties[$var->dim->value])) {
|
|
unset($atomic_root_type->properties[$var->dim->value]);
|
|
}
|
|
|
|
if (!$atomic_root_type->properties) {
|
|
$root_type->addType(
|
|
new Type\Atomic\TArray([
|
|
new Type\Union([new Type\Atomic\TEmpty]),
|
|
new Type\Union([new Type\Atomic\TEmpty]),
|
|
])
|
|
);
|
|
}
|
|
} else {
|
|
$root_type->addType(
|
|
$atomic_root_type->getGenericArrayType()
|
|
);
|
|
}
|
|
} elseif ($atomic_root_type instanceof Type\Atomic\TNonEmptyArray) {
|
|
$root_type->addType(
|
|
new Type\Atomic\TArray($atomic_root_type->type_params)
|
|
);
|
|
}
|
|
}
|
|
|
|
$context->vars_in_scope[$root_var_id] = $root_type;
|
|
|
|
$context->removeVarFromConflictingClauses(
|
|
$root_var_id,
|
|
$context->vars_in_scope[$root_var_id],
|
|
$this
|
|
);
|
|
}
|
|
}
|
|
}
|
|
|
|
$context->inside_unset = false;
|
|
}
|
|
|
|
/**
|
|
* @param PhpParser\Node\Stmt\Static_ $stmt
|
|
* @param Context $context
|
|
*
|
|
* @return false|null
|
|
*/
|
|
private function analyzeStatic(PhpParser\Node\Stmt\Static_ $stmt, Context $context)
|
|
{
|
|
foreach ($stmt->vars as $var) {
|
|
if ($var->default) {
|
|
if (ExpressionAnalyzer::analyze($this, $var->default, $context) === false) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if ($context->check_variables) {
|
|
if (!is_string($var->var->name)) {
|
|
continue;
|
|
}
|
|
|
|
$var_id = '$' . $var->var->name;
|
|
|
|
$context->vars_in_scope[$var_id] = Type::getMixed();
|
|
$context->vars_possibly_in_scope[$var_id] = true;
|
|
$context->assigned_var_ids[$var_id] = true;
|
|
|
|
$location = new CodeLocation($this, $stmt);
|
|
|
|
if ($context->collect_references) {
|
|
$context->unreferenced_vars[$var_id] = [$location->getHash() => $location];
|
|
}
|
|
|
|
$this->registerVariable(
|
|
$var_id,
|
|
$location,
|
|
$context->branch_point
|
|
);
|
|
}
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* @param PhpParser\Node\Expr $stmt
|
|
* @param ?array<string, Type\Union> $existing_class_constants
|
|
* @param string $fq_classlike_name
|
|
*
|
|
* @return Type\Union|null
|
|
*/
|
|
public static function getSimpleType(
|
|
\Psalm\Codebase $codebase,
|
|
PhpParser\Node\Expr $stmt,
|
|
\Psalm\Aliases $aliases,
|
|
\Psalm\FileSource $file_source = null,
|
|
array $existing_class_constants = null,
|
|
$fq_classlike_name = null
|
|
) {
|
|
if ($stmt instanceof PhpParser\Node\Expr\BinaryOp) {
|
|
if ($stmt instanceof PhpParser\Node\Expr\BinaryOp\Concat) {
|
|
return Type::getString();
|
|
}
|
|
|
|
if ($stmt instanceof PhpParser\Node\Expr\BinaryOp\BooleanAnd
|
|
|| $stmt instanceof PhpParser\Node\Expr\BinaryOp\BooleanOr
|
|
|| $stmt instanceof PhpParser\Node\Expr\BinaryOp\LogicalAnd
|
|
|| $stmt instanceof PhpParser\Node\Expr\BinaryOp\LogicalOr
|
|
|| $stmt instanceof PhpParser\Node\Expr\BinaryOp\Equal
|
|
|| $stmt instanceof PhpParser\Node\Expr\BinaryOp\NotEqual
|
|
|| $stmt instanceof PhpParser\Node\Expr\BinaryOp\Identical
|
|
|| $stmt instanceof PhpParser\Node\Expr\BinaryOp\NotIdentical
|
|
|| $stmt instanceof PhpParser\Node\Expr\BinaryOp\Greater
|
|
|| $stmt instanceof PhpParser\Node\Expr\BinaryOp\GreaterOrEqual
|
|
|| $stmt instanceof PhpParser\Node\Expr\BinaryOp\Smaller
|
|
|| $stmt instanceof PhpParser\Node\Expr\BinaryOp\SmallerOrEqual
|
|
) {
|
|
return Type::getBool();
|
|
}
|
|
|
|
if ($stmt instanceof PhpParser\Node\Expr\BinaryOp\Coalesce) {
|
|
return null;
|
|
}
|
|
|
|
if ($stmt instanceof PhpParser\Node\Expr\BinaryOp\Spaceship) {
|
|
return Type::getInt();
|
|
}
|
|
|
|
$stmt->left->inferredType = self::getSimpleType(
|
|
$codebase,
|
|
$stmt->left,
|
|
$aliases,
|
|
$file_source,
|
|
$existing_class_constants,
|
|
$fq_classlike_name
|
|
);
|
|
$stmt->right->inferredType = self::getSimpleType(
|
|
$codebase,
|
|
$stmt->right,
|
|
$aliases,
|
|
$file_source,
|
|
$existing_class_constants,
|
|
$fq_classlike_name
|
|
);
|
|
|
|
if (!$stmt->left->inferredType || !$stmt->right->inferredType) {
|
|
return null;
|
|
}
|
|
|
|
if ($stmt instanceof PhpParser\Node\Expr\BinaryOp\Plus ||
|
|
$stmt instanceof PhpParser\Node\Expr\BinaryOp\Minus ||
|
|
$stmt instanceof PhpParser\Node\Expr\BinaryOp\Mod ||
|
|
$stmt instanceof PhpParser\Node\Expr\BinaryOp\Mul ||
|
|
$stmt instanceof PhpParser\Node\Expr\BinaryOp\Pow
|
|
) {
|
|
BinaryOpAnalyzer::analyzeNonDivArithmenticOp(
|
|
$file_source instanceof StatementsSource ? $file_source : null,
|
|
$stmt->left,
|
|
$stmt->right,
|
|
$stmt,
|
|
$result_type
|
|
);
|
|
|
|
if ($result_type) {
|
|
return $result_type;
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
if ($stmt instanceof PhpParser\Node\Expr\BinaryOp\Div
|
|
&& ($stmt->left->inferredType->hasInt() || $stmt->left->inferredType->hasFloat())
|
|
&& ($stmt->right->inferredType->hasInt() || $stmt->right->inferredType->hasFloat())
|
|
) {
|
|
return Type::combineUnionTypes(Type::getFloat(), Type::getInt());
|
|
}
|
|
}
|
|
|
|
if ($stmt instanceof PhpParser\Node\Expr\ConstFetch) {
|
|
if (strtolower($stmt->name->parts[0]) === 'false') {
|
|
return Type::getFalse();
|
|
} elseif (strtolower($stmt->name->parts[0]) === 'true') {
|
|
return Type::getBool();
|
|
} elseif (strtolower($stmt->name->parts[0]) === 'null') {
|
|
return Type::getNull();
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
if ($stmt instanceof PhpParser\Node\Expr\ClassConstFetch) {
|
|
if ($stmt->class instanceof PhpParser\Node\Name
|
|
&& $stmt->name instanceof PhpParser\Node\Identifier
|
|
&& $fq_classlike_name
|
|
&& $stmt->class->parts !== ['static']
|
|
&& $stmt->class->parts !== ['parent']
|
|
) {
|
|
if (isset($existing_class_constants[$stmt->name->name])) {
|
|
if ($stmt->class->parts === ['self']) {
|
|
return clone $existing_class_constants[$stmt->name->name];
|
|
}
|
|
}
|
|
|
|
if ($stmt->class->parts === ['self']) {
|
|
$const_fq_class_name = $fq_classlike_name;
|
|
} else {
|
|
$const_fq_class_name = ClassLikeAnalyzer::getFQCLNFromNameObject(
|
|
$stmt->class,
|
|
$aliases
|
|
);
|
|
}
|
|
|
|
if (strtolower($const_fq_class_name) === strtolower($fq_classlike_name)
|
|
&& isset($existing_class_constants[$stmt->name->name])
|
|
) {
|
|
return clone $existing_class_constants[$stmt->name->name];
|
|
}
|
|
|
|
if (strtolower($stmt->name->name) === 'class') {
|
|
return Type::getClassString($const_fq_class_name);
|
|
}
|
|
|
|
if ($existing_class_constants === null) {
|
|
try {
|
|
$foreign_class_constants = $codebase->classlikes->getConstantsForClass(
|
|
$const_fq_class_name,
|
|
\ReflectionProperty::IS_PRIVATE
|
|
);
|
|
|
|
if (isset($foreign_class_constants[$stmt->name->name])) {
|
|
return clone $foreign_class_constants[$stmt->name->name];
|
|
}
|
|
|
|
return null;
|
|
} catch (\InvalidArgumentException $e) {
|
|
return null;
|
|
}
|
|
}
|
|
}
|
|
|
|
if ($stmt->name instanceof PhpParser\Node\Identifier && strtolower($stmt->name->name) === 'class') {
|
|
return Type::getClassString();
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
if ($stmt instanceof PhpParser\Node\Scalar\String_) {
|
|
return Type::getString(strlen($stmt->value) < 30 ? $stmt->value : null);
|
|
}
|
|
|
|
if ($stmt instanceof PhpParser\Node\Scalar\LNumber) {
|
|
return Type::getInt(false, $stmt->value);
|
|
}
|
|
|
|
if ($stmt instanceof PhpParser\Node\Scalar\DNumber) {
|
|
return Type::getFloat($stmt->value);
|
|
}
|
|
|
|
if ($stmt instanceof PhpParser\Node\Expr\Array_) {
|
|
if (count($stmt->items) === 0) {
|
|
return Type::getEmptyArray();
|
|
}
|
|
|
|
$item_key_type = null;
|
|
$item_value_type = null;
|
|
|
|
$property_types = [];
|
|
$class_strings = [];
|
|
|
|
$can_create_objectlike = true;
|
|
|
|
foreach ($stmt->items as $int_offset => $item) {
|
|
if ($item === null) {
|
|
continue;
|
|
}
|
|
|
|
$single_item_key_type = null;
|
|
|
|
if ($item->key) {
|
|
$single_item_key_type = self::getSimpleType(
|
|
$codebase,
|
|
$item->key,
|
|
$aliases,
|
|
$file_source,
|
|
$existing_class_constants,
|
|
$fq_classlike_name
|
|
);
|
|
|
|
if ($single_item_key_type) {
|
|
if ($item_key_type) {
|
|
$item_key_type = Type::combineUnionTypes(
|
|
$single_item_key_type,
|
|
$item_key_type,
|
|
false,
|
|
true,
|
|
30
|
|
);
|
|
} else {
|
|
$item_key_type = $single_item_key_type;
|
|
}
|
|
}
|
|
} else {
|
|
$item_key_type = Type::getInt();
|
|
}
|
|
|
|
if ($item_value_type && !$can_create_objectlike) {
|
|
continue;
|
|
}
|
|
|
|
$single_item_value_type = self::getSimpleType(
|
|
$codebase,
|
|
$item->value,
|
|
$aliases,
|
|
$file_source,
|
|
$existing_class_constants,
|
|
$fq_classlike_name
|
|
);
|
|
|
|
if (!$single_item_value_type) {
|
|
return null;
|
|
}
|
|
|
|
if ($item->key instanceof PhpParser\Node\Scalar\String_
|
|
|| $item->key instanceof PhpParser\Node\Scalar\LNumber
|
|
|| !$item->key
|
|
) {
|
|
if (count($property_types) <= 50) {
|
|
$property_types[$item->key ? $item->key->value : $int_offset] = $single_item_value_type;
|
|
} else {
|
|
$can_create_objectlike = false;
|
|
}
|
|
} else {
|
|
$dim_type = $single_item_key_type;
|
|
|
|
if (!$dim_type) {
|
|
return null;
|
|
}
|
|
|
|
$dim_atomic_types = $dim_type->getTypes();
|
|
|
|
if (count($dim_atomic_types) > 1 || $dim_type->hasMixed() || count($property_types) > 50) {
|
|
$can_create_objectlike = false;
|
|
} else {
|
|
$atomic_type = array_shift($dim_atomic_types);
|
|
|
|
if ($atomic_type instanceof Type\Atomic\TLiteralInt
|
|
|| $atomic_type instanceof Type\Atomic\TLiteralString
|
|
) {
|
|
if ($atomic_type instanceof Type\Atomic\TLiteralClassString) {
|
|
$class_strings[$atomic_type->value] = true;
|
|
}
|
|
|
|
$property_types[$atomic_type->value] = $single_item_value_type;
|
|
} else {
|
|
$can_create_objectlike = false;
|
|
}
|
|
}
|
|
}
|
|
|
|
if ($item_value_type) {
|
|
$item_value_type = Type::combineUnionTypes(
|
|
$single_item_value_type,
|
|
$item_value_type,
|
|
false,
|
|
true,
|
|
30
|
|
);
|
|
} else {
|
|
$item_value_type = $single_item_value_type;
|
|
}
|
|
}
|
|
|
|
// if this array looks like an object-like array, let's return that instead
|
|
if ($item_value_type
|
|
&& $item_key_type
|
|
&& ($item_key_type->hasString() || $item_key_type->hasInt())
|
|
&& $can_create_objectlike
|
|
) {
|
|
$objectlike = new Type\Atomic\ObjectLike($property_types, $class_strings);
|
|
$objectlike->sealed = true;
|
|
return new Type\Union([$objectlike]);
|
|
}
|
|
|
|
if (!$item_key_type || !$item_value_type) {
|
|
return null;
|
|
}
|
|
|
|
return new Type\Union([
|
|
new Type\Atomic\TNonEmptyArray([
|
|
$item_key_type,
|
|
$item_value_type,
|
|
]),
|
|
]);
|
|
}
|
|
|
|
if ($stmt instanceof PhpParser\Node\Expr\Cast\Int_) {
|
|
return Type::getInt();
|
|
}
|
|
|
|
if ($stmt instanceof PhpParser\Node\Expr\Cast\Double) {
|
|
return Type::getFloat();
|
|
}
|
|
|
|
if ($stmt instanceof PhpParser\Node\Expr\Cast\Bool_) {
|
|
return Type::getBool();
|
|
}
|
|
|
|
if ($stmt instanceof PhpParser\Node\Expr\Cast\String_) {
|
|
return Type::getString();
|
|
}
|
|
|
|
if ($stmt instanceof PhpParser\Node\Expr\Cast\Object_) {
|
|
return Type::getObject();
|
|
}
|
|
|
|
if ($stmt instanceof PhpParser\Node\Expr\Cast\Array_) {
|
|
return Type::getArray();
|
|
}
|
|
|
|
if ($stmt instanceof PhpParser\Node\Expr\UnaryMinus || $stmt instanceof PhpParser\Node\Expr\UnaryPlus) {
|
|
$type_to_invert = self::getSimpleType(
|
|
$codebase,
|
|
$stmt->expr,
|
|
$aliases,
|
|
$file_source,
|
|
$existing_class_constants,
|
|
$fq_classlike_name
|
|
);
|
|
|
|
if (!$type_to_invert) {
|
|
return null;
|
|
}
|
|
|
|
foreach ($type_to_invert->getTypes() as $type_part) {
|
|
if ($type_part instanceof Type\Atomic\TLiteralInt
|
|
&& $stmt instanceof PhpParser\Node\Expr\UnaryMinus
|
|
) {
|
|
$type_part->value = -$type_part->value;
|
|
} elseif ($type_part instanceof Type\Atomic\TLiteralFloat
|
|
&& $stmt instanceof PhpParser\Node\Expr\UnaryMinus
|
|
) {
|
|
$type_part->value = -$type_part->value;
|
|
}
|
|
}
|
|
|
|
return $type_to_invert;
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* @param PhpParser\Node\Stmt\Const_ $stmt
|
|
* @param Context $context
|
|
*
|
|
* @return void
|
|
*/
|
|
private function analyzeConstAssignment(PhpParser\Node\Stmt\Const_ $stmt, Context $context)
|
|
{
|
|
foreach ($stmt->consts as $const) {
|
|
ExpressionAnalyzer::analyze($this, $const->value, $context);
|
|
|
|
$this->setConstType(
|
|
$const->name->name,
|
|
isset($const->value->inferredType) ? $const->value->inferredType : Type::getMixed(),
|
|
$context
|
|
);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param string $const_name
|
|
* @param bool $is_fully_qualified
|
|
* @param Context $context
|
|
*
|
|
* @return Type\Union|null
|
|
*/
|
|
public function getConstType(
|
|
StatementsAnalyzer $statements_analyzer,
|
|
$const_name,
|
|
$is_fully_qualified,
|
|
Context $context
|
|
) {
|
|
$fq_const_name = null;
|
|
|
|
$aliased_constants = $this->getAliases()->constants;
|
|
|
|
if (isset($aliased_constants[$const_name])) {
|
|
$fq_const_name = $aliased_constants[$const_name];
|
|
} elseif ($is_fully_qualified) {
|
|
$fq_const_name = $const_name;
|
|
} elseif (strpos($const_name, '\\')) {
|
|
$fq_const_name = Type::getFQCLNFromString($const_name, $this->getAliases());
|
|
}
|
|
|
|
if ($fq_const_name) {
|
|
$const_name_parts = explode('\\', $fq_const_name);
|
|
$const_name = array_pop($const_name_parts);
|
|
$namespace_name = implode('\\', $const_name_parts);
|
|
$namespace_constants = NamespaceAnalyzer::getConstantsForNamespace(
|
|
$namespace_name,
|
|
\ReflectionProperty::IS_PUBLIC
|
|
);
|
|
|
|
if (isset($namespace_constants[$const_name])) {
|
|
return $namespace_constants[$const_name];
|
|
}
|
|
}
|
|
|
|
if ($context->hasVariable($const_name, $statements_analyzer)) {
|
|
return $context->vars_in_scope[$const_name];
|
|
}
|
|
|
|
$file_path = $statements_analyzer->getRootFilePath();
|
|
$codebase = $statements_analyzer->getCodebase();
|
|
|
|
$file_storage_provider = $codebase->file_storage_provider;
|
|
|
|
$file_storage = $file_storage_provider->get($file_path);
|
|
|
|
if (isset($file_storage->declaring_constants[$const_name])) {
|
|
$constant_file_path = $file_storage->declaring_constants[$const_name];
|
|
|
|
return $file_storage_provider->get($constant_file_path)->constants[$const_name];
|
|
}
|
|
|
|
return ConstFetchAnalyzer::getGlobalConstType($codebase, $fq_const_name, $const_name);
|
|
}
|
|
|
|
/**
|
|
* @param string $const_name
|
|
* @param Type\Union $const_type
|
|
* @param Context $context
|
|
*
|
|
* @return void
|
|
*/
|
|
public function setConstType($const_name, Type\Union $const_type, Context $context)
|
|
{
|
|
$context->vars_in_scope[$const_name] = $const_type;
|
|
$context->constants[$const_name] = $const_type;
|
|
|
|
if ($this->source instanceof NamespaceAnalyzer) {
|
|
$this->source->setConstType($const_name, $const_type);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param string $var_name
|
|
*
|
|
* @return bool
|
|
*/
|
|
public function hasVariable($var_name)
|
|
{
|
|
return isset($this->all_vars[$var_name]);
|
|
}
|
|
|
|
/**
|
|
* @param string $var_id
|
|
* @param CodeLocation $location
|
|
* @param int|null $branch_point
|
|
*
|
|
* @return void
|
|
*/
|
|
public function registerVariable($var_id, CodeLocation $location, $branch_point)
|
|
{
|
|
$this->all_vars[$var_id] = $location;
|
|
|
|
if ($branch_point) {
|
|
$this->var_branch_points[$var_id] = $branch_point;
|
|
}
|
|
|
|
$this->registerVariableAssignment($var_id, $location);
|
|
}
|
|
|
|
/**
|
|
* @param string $var_id
|
|
* @param CodeLocation $location
|
|
*
|
|
* @return void
|
|
*/
|
|
public function registerVariableAssignment($var_id, CodeLocation $location)
|
|
{
|
|
$this->unused_var_locations[$location->getHash()] = [$var_id, $location];
|
|
}
|
|
|
|
/**
|
|
* @param array<string, CodeLocation> $locations
|
|
* @return void
|
|
*/
|
|
public function registerVariableUses(array $locations)
|
|
{
|
|
foreach ($locations as $hash => $_) {
|
|
unset($this->unused_var_locations[$hash]);
|
|
$this->used_var_locations[$hash] = true;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @return array<string, array{0: string, 1: CodeLocation}>
|
|
*/
|
|
public function getUnusedVarLocations()
|
|
{
|
|
return $this->unused_var_locations;
|
|
}
|
|
|
|
/**
|
|
* The first appearance of the variable in this set of statements being evaluated
|
|
*
|
|
* @param string $var_id
|
|
*
|
|
* @return CodeLocation|null
|
|
*/
|
|
public function getFirstAppearance($var_id)
|
|
{
|
|
return isset($this->all_vars[$var_id]) ? $this->all_vars[$var_id] : null;
|
|
}
|
|
|
|
/**
|
|
* @param string $var_id
|
|
*
|
|
* @return int|null
|
|
*/
|
|
public function getBranchPoint($var_id)
|
|
{
|
|
return isset($this->var_branch_points[$var_id]) ? $this->var_branch_points[$var_id] : null;
|
|
}
|
|
|
|
/**
|
|
* @param string $var_id
|
|
* @param int $branch_point
|
|
*
|
|
* @return void
|
|
*/
|
|
public function addVariableInitialization($var_id, $branch_point)
|
|
{
|
|
$this->vars_to_initialize[$var_id] = $branch_point;
|
|
}
|
|
|
|
public function getFileAnalyzer() : FileAnalyzer
|
|
{
|
|
return $this->file_analyzer;
|
|
}
|
|
|
|
public function getCodebase() : Codebase
|
|
{
|
|
return $this->codebase;
|
|
}
|
|
|
|
/**
|
|
* @return array<string, FunctionAnalyzer>
|
|
*/
|
|
public function getFunctionAnalyzers()
|
|
{
|
|
return $this->function_analyzers;
|
|
}
|
|
}
|