mirror of
https://github.com/danog/psalm.git
synced 2024-12-12 17:27:28 +01:00
3040 lines
119 KiB
PHP
3040 lines
119 KiB
PHP
<?php
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namespace CodeInspector;
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use PhpParser;
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use CodeInspector\ExceptionHandler;
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use CodeInspector\Issue\ForbiddenCode;
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use CodeInspector\Issue\InvalidArgument;
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use CodeInspector\Issue\InvalidNamespace;
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use CodeInspector\Issue\InvalidIterator;
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use CodeInspector\Issue\NullReference;
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use CodeInspector\Issue\ParentNotFound;
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use CodeInspector\Issue\PossiblyUndefinedVariable;
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use CodeInspector\Issue\InvalidArrayAssignment;
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use CodeInspector\Issue\InvalidScope;
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use CodeInspector\Issue\InvalidStaticInvocation;
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use CodeInspector\Issue\InvalidStaticVariable;
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use CodeInspector\Issue\FailedTypeResolution;
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use CodeInspector\Issue\UndefinedConstant;
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use CodeInspector\Issue\UndefinedFunction;
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use CodeInspector\Issue\UndefinedProperty;
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use CodeInspector\Issue\UndefinedVariable;
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class StatementsChecker
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{
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protected $_stmts;
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protected $_source;
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protected $_all_vars = [];
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protected $_warn_vars = [];
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protected $_check_classes = true;
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protected $_check_variables = true;
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protected $_check_methods = true;
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protected $_check_consts = true;
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protected $_check_functions = true;
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protected $_class_name;
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protected $_class_extends;
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protected $_namespace;
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protected $_aliased_classes;
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protected $_file_name;
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protected $_is_static;
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protected $_absolute_class;
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protected $_type_checker;
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protected $_available_functions = [];
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protected $_require_file_name = null;
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protected static $_method_call_index = [];
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protected static $_existing_functions = [];
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protected static $_reflection_functions = [];
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protected static $_this_assignments = [];
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protected static $_this_calls = [];
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protected static $_existing_static_vars = [];
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protected static $_existing_properties = [];
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protected static $_check_string_fn = null;
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protected static $_mock_interfaces = [];
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public function __construct(StatementsSource $source, $enforce_variable_checks = false, $check_methods = true)
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{
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$this->_source = $source;
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$this->_check_classes = true;
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$this->_check_methods = $check_methods;
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$this->_check_consts = true;
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$this->_file_name = $this->_source->getFileName();
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$this->_aliased_classes = $this->_source->getAliasedClasses();
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$this->_namespace = $this->_source->getNamespace();
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$this->_is_static = $this->_source->isStatic();
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$this->_absolute_class = $this->_source->getAbsoluteClass();
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$this->_class_name = $this->_source->getClassName();
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$this->_class_extends = $this->_source->getParentClass();
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$this->_check_variables = !Config::getInstance()->doesInheritVariables($this->_file_name) || $enforce_variable_checks;
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$this->_type_checker = new TypeChecker($source, $this);
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}
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public function check(array $stmts, array &$vars_in_scope, array &$vars_possibly_in_scope, array &$for_vars_possibly_in_scope = [])
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{
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$has_returned = false;
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// register all functions first
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foreach ($stmts as $stmt) {
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if ($stmt instanceof PhpParser\Node\Stmt\Function_) {
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$file_checker = FileChecker::getFileCheckerFromFileName($this->_file_name);
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$file_checker->registerFunction($stmt);
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}
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}
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foreach ($stmts as $stmt) {
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if ($has_returned && !($stmt instanceof PhpParser\Node\Stmt\Nop) && !($stmt instanceof PhpParser\Node\Stmt\InlineHTML)) {
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echo('Warning: Expressions after return/throw/continue in ' . $this->_file_name . ' on line ' . $stmt->getLine() . PHP_EOL);
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break;
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}
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if ($stmt instanceof PhpParser\Node\Stmt\If_) {
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$this->_checkIf($stmt, $vars_in_scope, $vars_possibly_in_scope, $for_vars_possibly_in_scope);
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} elseif ($stmt instanceof PhpParser\Node\Stmt\TryCatch) {
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$this->_checkTryCatch($stmt, $vars_in_scope, $vars_possibly_in_scope);
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} elseif ($stmt instanceof PhpParser\Node\Stmt\For_) {
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$this->_checkFor($stmt, $vars_in_scope, $vars_possibly_in_scope);
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} elseif ($stmt instanceof PhpParser\Node\Stmt\Foreach_) {
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$this->_checkForeach($stmt, $vars_in_scope, $vars_possibly_in_scope);
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} elseif ($stmt instanceof PhpParser\Node\Stmt\While_) {
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$this->_checkWhile($stmt, $vars_in_scope, $vars_possibly_in_scope);
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} elseif ($stmt instanceof PhpParser\Node\Stmt\Do_) {
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$this->_checkDo($stmt, $vars_in_scope, $vars_possibly_in_scope);
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} elseif ($stmt instanceof PhpParser\Node\Stmt\Const_) {
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foreach ($stmt->consts as $const) {
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$this->_checkExpression($const->value, $vars_in_scope, $vars_possibly_in_scope);
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}
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} elseif ($stmt instanceof PhpParser\Node\Stmt\Unset_) {
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// do nothing
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} elseif ($stmt instanceof PhpParser\Node\Stmt\Return_) {
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$has_returned = true;
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$this->_checkReturn($stmt, $vars_in_scope, $vars_possibly_in_scope);
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} elseif ($stmt instanceof PhpParser\Node\Stmt\Throw_) {
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$has_returned = true;
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$this->_checkThrow($stmt, $vars_in_scope, $vars_possibly_in_scope);
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} elseif ($stmt instanceof PhpParser\Node\Stmt\Switch_) {
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$this->_checkSwitch($stmt, $vars_in_scope, $vars_possibly_in_scope, $for_vars_possibly_in_scope);
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} elseif ($stmt instanceof PhpParser\Node\Stmt\Break_) {
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// do nothing
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} elseif ($stmt instanceof PhpParser\Node\Stmt\Continue_) {
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$has_returned = true;
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} elseif ($stmt instanceof PhpParser\Node\Stmt\Static_) {
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$this->_checkStatic($stmt, $vars_in_scope, $vars_possibly_in_scope);
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} elseif ($stmt instanceof PhpParser\Node\Stmt\Echo_) {
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foreach ($stmt->exprs as $expr) {
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$this->_checkExpression($expr, $vars_in_scope, $vars_possibly_in_scope);
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}
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} elseif ($stmt instanceof PhpParser\Node\Stmt\Function_) {
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$function_checker = new FunctionChecker($stmt, $this->_source);
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$function_checker->check();
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} elseif ($stmt instanceof PhpParser\Node\Expr) {
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$this->_checkExpression($stmt, $vars_in_scope, $vars_possibly_in_scope);
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} elseif ($stmt instanceof PhpParser\Node\Stmt\InlineHTML) {
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// do nothing
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} elseif ($stmt instanceof PhpParser\Node\Stmt\Use_) {
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foreach ($stmt->uses as $use) {
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$this->_aliased_classes[$use->alias] = implode('\\', $use->name->parts);
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}
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} elseif ($stmt instanceof PhpParser\Node\Stmt\Global_) {
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foreach ($stmt->vars as $var) {
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if ($var instanceof PhpParser\Node\Expr\Variable) {
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if (is_string($var->name)) {
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$vars_in_scope[$var->name] = Type::getMixed();
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$vars_possibly_in_scope[$var->name] = true;
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} else {
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$this->_checkExpression($var, $vars_in_scope, $vars_possibly_in_scope);
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}
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}
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}
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} elseif ($stmt instanceof PhpParser\Node\Stmt\Property) {
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foreach ($stmt->props as $prop) {
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if ($prop->default) {
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$this->_checkExpression($prop->default, $vars_in_scope, $vars_possibly_in_scope);
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}
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self::$_existing_static_vars[$this->_absolute_class . '::$' . $prop->name] = 1;
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}
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} elseif ($stmt instanceof PhpParser\Node\Stmt\ClassConst) {
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} elseif ($stmt instanceof PhpParser\Node\Stmt\Class_) {
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(new ClassChecker($stmt, $this->_source, $stmt->name))->check();
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} elseif ($stmt instanceof PhpParser\Node\Stmt\Nop) {
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// do nothing
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} elseif ($stmt instanceof PhpParser\Node\Stmt\Namespace_) {
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if ($this->_namespace) {
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if (ExceptionHandler::accepts(
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new InvalidNamespace('Cannot redeclare namespace', $this->_require_file_name, $stmt->getLine())
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)) {
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return false;
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}
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}
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$namespace_checker = new NamespaceChecker($stmt, $this->_source);
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$namespace_checker->check(true);
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} else {
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var_dump('Unrecognised statement in ' . $this->_file_name);
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var_dump($stmt);
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}
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}
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}
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protected function _checkIf(PhpParser\Node\Stmt\If_ $stmt, array &$vars_in_scope, array &$vars_possibly_in_scope, array &$for_vars_possibly_in_scope)
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{
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if ($this->_checkCondition($stmt->cond, $vars_in_scope, $vars_possibly_in_scope) === false) {
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return false;
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}
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$if_types = $this->_type_checker->getTypeAssertions($stmt->cond, true);
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$has_leaving_statments = ScopeChecker::doesLeaveBlock($stmt->stmts, true, true);
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// we only need to negate the if types if there are throw/return/break/continue or else/elseif blocks
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$need_to_negate_if_types = $has_leaving_statments || $stmt->elseifs || $stmt->else;
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$can_negate_if_types = !($stmt->cond instanceof PhpParser\Node\Expr\BinaryOp\BooleanAnd);
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$negated_types = $if_types && $need_to_negate_if_types && $can_negate_if_types
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? TypeChecker::negateTypes($if_types)
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: [];
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$negated_if_types = $negated_types;
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// if the if has an || in the conditional, we cannot easily reason about it
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if ($stmt->cond instanceof PhpParser\Node\Expr\BinaryOp && self::_containsBooleanOr($stmt->cond)) {
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$if_vars = array_merge([], $vars_in_scope);
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$if_vars_possibly_in_scope = array_merge([], $vars_possibly_in_scope);
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}
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else {
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$if_vars_reconciled = TypeChecker::reconcileKeyedTypes($if_types, $vars_in_scope, $this->_file_name, $stmt->getLine());
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if ($if_vars_reconciled === false) {
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return false;
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}
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$if_vars = $if_vars_reconciled;
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$if_vars_possibly_in_scope = array_merge($if_types, $vars_possibly_in_scope);
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}
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$old_if_vars = $if_vars;
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if ($this->check($stmt->stmts, $if_vars, $if_vars_possibly_in_scope, $for_vars_possibly_in_scope) === false) {
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return false;
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}
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$new_vars = null;
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$new_vars_possibly_in_scope = [];
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$redefined_vars = null;
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$possibly_redefined_vars = [];
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$has_left = false;
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$post_type_assertions = [];
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if (count($stmt->stmts)) {
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if (!$has_leaving_statments) {
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$new_vars = array_diff_key($if_vars, $vars_in_scope);
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$redefined_vars = [];
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foreach (array_keys($if_types) as $if_type_var) {
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if (isset($if_vars[$if_type_var])) {
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$redefined_vars[$if_type_var] = isset($if_vars[$if_type_var]) ? $if_vars[$if_type_var] : Type::getMixed();
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}
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}
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foreach ($old_if_vars as $if_var => $type) {
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if ($if_vars[$if_var] !== $type) {
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$redefined_vars[$if_var] = $if_vars[$if_var];
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}
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}
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$possibly_redefined_vars = $redefined_vars;
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foreach ($redefined_vars as $redefined_var => $type) {
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if (isset($if_types[$redefined_var]) && TypeChecker::isNegation($redefined_var, $if_types[$redefined_var])) {
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$post_type_assertions[$redefined_var] = $type;
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}
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}
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}
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else {
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$has_left = true;
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$post_type_assertions = $negated_types;
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}
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$has_ending_statments = ScopeChecker::doesLeaveBlock($stmt->stmts, false, false);
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if (!$has_ending_statments) {
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$vars = array_diff_key($if_vars_possibly_in_scope, $vars_possibly_in_scope);
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// if we're leaving this block, add vars to outer for loop scope
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if ($has_leaving_statments) {
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$for_vars_possibly_in_scope = array_merge($for_vars_possibly_in_scope, $vars);
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}
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else {
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$new_vars_possibly_in_scope = $vars;
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}
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}
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}
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foreach ($stmt->elseifs as $elseif) {
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if ($negated_types) {
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$elseif_vars_reconciled = TypeChecker::reconcileKeyedTypes($negated_types, $vars_in_scope, $this->_file_name, $stmt->getLine());
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if ($elseif_vars_reconciled === false) {
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return false;
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}
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$elseif_vars = $elseif_vars_reconciled;
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}
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else {
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$elseif_vars = array_merge([], $vars_in_scope);
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}
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$old_elseif_vars = $elseif_vars;
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$elseif_vars_possibly_in_scope = array_merge([], $vars_possibly_in_scope);
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$elseif_types = $this->_type_checker->getTypeAssertions($elseif->cond, true);
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if (!($elseif->cond instanceof PhpParser\Node\Expr\BinaryOp\BooleanAnd)) {
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$negated_types = array_merge($negated_types, TypeChecker::negateTypes($elseif_types));
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}
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else {
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$elseif_vars_reconciled = TypeChecker::reconcileKeyedTypes($elseif_types, $elseif_vars, $this->_file_name, $stmt->getLine());
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if ($elseif_vars_reconciled === false) {
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return false;
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}
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$elseif_vars = $elseif_vars_reconciled;
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}
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if ($this->_checkElseIf($elseif, $elseif_vars, $elseif_vars_possibly_in_scope, $for_vars_possibly_in_scope) === false) {
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return false;
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}
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if (count($elseif->stmts)) {
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$has_leaving_statements = ScopeChecker::doesLeaveBlock($elseif->stmts, true, true);
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if (!$has_leaving_statements) {
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$elseif_redefined_vars = [];
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foreach ($old_elseif_vars as $elseif_var => $type) {
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if ($elseif_vars[$elseif_var] !== $type) {
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$elseif_redefined_vars[$elseif_var] = $elseif_vars[$elseif_var];
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}
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}
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if ($redefined_vars === null) {
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$redefined_vars = $elseif_redefined_vars;
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$possibly_redefined_vars = $redefined_vars;
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foreach ($redefined_vars as $redefined_var => $type) {
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if (isset($elseif_types[$redefined_var]) && TypeChecker::isNegation($redefined_var, $if_types[$redefined_var])) {
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$post_type_assertions[$redefined_var] = $type;
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}
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}
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}
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else {
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foreach ($redefined_vars as $redefined_var => $type) {
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if (!isset($elseif_redefined_vars[$redefined_var])) {
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unset($redefined_vars[$redefined_var]);
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}
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}
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foreach ($elseif_redefined_vars as $var => $type) {
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if ($type->isMixed()) {
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$possibly_redefined_vars[$var] = $type;
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}
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else if (isset($possibly_redefined_vars[$var])) {
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$possibly_redefined_vars[$var] = Type::combineUnionTypes($type, $possibly_redefined_vars[$var]);
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}
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else {
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$possibly_redefined_vars[$var] = $type;
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}
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}
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}
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if ($new_vars === null) {
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$new_vars = array_diff_key($elseif_vars, $vars_in_scope);
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}
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else {
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foreach ($new_vars as $new_var => $type) {
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if (!isset($elseif_vars[$new_var])) {
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unset($new_vars[$new_var]);
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}
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else {
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$new_vars[$new_var] = Type::combineUnionTypes($type, $elseif_vars[$new_var]);
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}
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}
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}
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}
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else {
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$post_type_assertions = $negated_types;
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}
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// has a return/throw at end
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$has_ending_statments = ScopeChecker::doesLeaveBlock($elseif->stmts, false, false);
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if (!$has_ending_statments) {
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$vars = array_diff_key($elseif_vars_possibly_in_scope, $vars_possibly_in_scope);
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// if we're leaving this block, add vars to outer for loop scope
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if ($has_leaving_statements) {
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$for_vars_possibly_in_scope = array_merge($vars, $for_vars_possibly_in_scope);
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}
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else {
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$new_vars_possibly_in_scope = array_merge($vars, $new_vars_possibly_in_scope);
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}
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}
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}
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}
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if ($stmt->else) {
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if ($negated_types) {
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$else_vars_reconciled = TypeChecker::reconcileKeyedTypes($negated_types, $vars_in_scope, $this->_file_name, $stmt->getLine());
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if ($else_vars_reconciled === false) {
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return false;
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}
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$else_vars = $else_vars_reconciled;
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}
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else {
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$else_vars = array_merge([], $vars_in_scope);
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}
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$old_else_vars = $else_vars;
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$else_vars_possibly_in_scope = $vars_possibly_in_scope;
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if ($this->_checkElse($stmt->else, $else_vars, $else_vars_possibly_in_scope, $for_vars_possibly_in_scope) === false) {
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return false;
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}
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if (count($stmt->else->stmts)) {
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$has_leaving_statements = ScopeChecker::doesLeaveBlock($stmt->else->stmts, true, true);
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// if it doesn't end in a return
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if (!$has_leaving_statements) {
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$else_redefined_vars = [];
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foreach ($old_else_vars as $else_var => $type) {
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if ($else_vars[$else_var] !== $type) {
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$else_redefined_vars[$else_var] = $else_vars[$else_var];
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}
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}
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if ($redefined_vars === null) {
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$redefined_vars = $else_redefined_vars;
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$possibly_redefined_vars = $redefined_vars;
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}
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else {
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foreach ($redefined_vars as $redefined_var => $type) {
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if (!isset($else_redefined_vars[$redefined_var])) {
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unset($redefined_vars[$redefined_var]);
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}
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}
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foreach ($else_redefined_vars as $var => $type) {
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if ($type->isMixed()) {
|
|
$possibly_redefined_vars[$var] = $type;
|
|
}
|
|
else if (isset($possibly_redefined_vars[$var])) {
|
|
$possibly_redefined_vars[$var] = Type::combineUnionTypes($type, $possibly_redefined_vars[$var]);
|
|
}
|
|
else {
|
|
$possibly_redefined_vars[$var] = $type;
|
|
}
|
|
}
|
|
}
|
|
|
|
if ($new_vars === null) {
|
|
$new_vars = array_diff_key($else_vars, $vars_in_scope);
|
|
}
|
|
else {
|
|
foreach ($new_vars as $new_var => $type) {
|
|
if (!isset($else_vars[$new_var])) {
|
|
unset($new_vars[$new_var]);
|
|
}
|
|
else {
|
|
$new_vars[$new_var] = Type::combineUnionTypes($type, $else_vars[$new_var]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// has a return/throw at end
|
|
$has_ending_statments = ScopeChecker::doesLeaveBlock($stmt->else->stmts, false, false);
|
|
|
|
if (!$has_ending_statments) {
|
|
$vars = array_diff_key($else_vars_possibly_in_scope, $vars_possibly_in_scope);
|
|
|
|
if ($has_leaving_statements) {
|
|
$for_vars_possibly_in_scope = array_merge($vars, $for_vars_possibly_in_scope);
|
|
}
|
|
else {
|
|
$new_vars_possibly_in_scope = array_merge($vars, $new_vars_possibly_in_scope);
|
|
}
|
|
}
|
|
|
|
if ($new_vars) {
|
|
// only update vars if there is an else
|
|
$vars_in_scope = array_merge($vars_in_scope, $new_vars);
|
|
}
|
|
|
|
if ($redefined_vars) {
|
|
$vars_in_scope = array_merge($vars_in_scope, $redefined_vars);
|
|
$redefined_vars = null;
|
|
}
|
|
}
|
|
}
|
|
|
|
$vars_possibly_in_scope = array_merge($vars_possibly_in_scope, $new_vars_possibly_in_scope);
|
|
|
|
if ($if_types) {
|
|
/**
|
|
* let's get the type assertions from the condition if it's a terminator
|
|
* so that we can negate them going forward
|
|
*/
|
|
if (ScopeChecker::doesLeaveBlock($stmt->stmts, false, false) && $negated_if_types) {
|
|
$vars_in_scope_reconciled = TypeChecker::reconcileKeyedTypes($negated_if_types, $vars_in_scope, $this->_file_name, $stmt->getLine());
|
|
|
|
if ($vars_in_scope_reconciled === false) {
|
|
return false;
|
|
}
|
|
|
|
$vars_in_scope = $vars_in_scope_reconciled;
|
|
|
|
$vars_possibly_in_scope = array_merge($negated_if_types, $vars_possibly_in_scope);
|
|
}
|
|
elseif ($redefined_vars) {
|
|
foreach ($if_types as $var => $type) {
|
|
if (in_array($type, ['empty', 'null'])) {
|
|
if (isset($redefined_vars[$var]) && (!isset($vars_in_scope[$var]) || !$vars_in_scope[$var]->isMixed())) {
|
|
$vars_in_scope[$var] = $redefined_vars[$var];
|
|
unset($redefined_vars[$var]);
|
|
}
|
|
}
|
|
elseif ($type === '!array' && isset($redefined_vars[$var]) && $redefined_vars[$var] === 'array') {
|
|
$vars_in_scope[$var] = $redefined_vars[$var];
|
|
unset($redefined_vars[$var]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if ($possibly_redefined_vars) {
|
|
foreach ($possibly_redefined_vars as $var => $type) {
|
|
if (isset($vars_in_scope[$var])) {
|
|
$vars_in_scope[$var] = Type::combineUnionTypes($vars_in_scope[$var], $type);
|
|
}
|
|
}
|
|
}
|
|
|
|
if ($post_type_assertions) {
|
|
$vars_in_scope_reconciled = TypeChecker::reconcileKeyedTypes($post_type_assertions, $vars_in_scope, $this->_file_name, $stmt->getLine());
|
|
|
|
if ($vars_in_scope_reconciled === false) {
|
|
return false;
|
|
}
|
|
|
|
$vars_in_scope = $vars_in_scope_reconciled;
|
|
}
|
|
}
|
|
|
|
protected function _checkElseIf(PhpParser\Node\Stmt\ElseIf_ $stmt, array &$vars_in_scope, array &$vars_possibly_in_scope, array &$for_vars_possibly_in_scope)
|
|
{
|
|
if ($this->_checkCondition($stmt->cond, $vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
|
|
$if_types = $this->_type_checker->getTypeAssertions($stmt->cond);
|
|
|
|
$elseif_vars_reconciled = TypeChecker::reconcileKeyedTypes($if_types, $vars_in_scope, $this->_file_name, $stmt->getLine());
|
|
|
|
if ($elseif_vars_reconciled === false) {
|
|
return false;
|
|
}
|
|
|
|
$elseif_vars = $elseif_vars_reconciled;
|
|
|
|
if ($this->check($stmt->stmts, $elseif_vars, $vars_possibly_in_scope, $for_vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
|
|
$vars_in_scope = $elseif_vars;
|
|
}
|
|
|
|
protected function _checkElse(PhpParser\Node\Stmt\Else_ $stmt, array &$vars_in_scope, array &$vars_possibly_in_scope, array &$for_vars_possibly_in_scope)
|
|
{
|
|
$this->check($stmt->stmts, $vars_in_scope, $vars_possibly_in_scope, $for_vars_possibly_in_scope);
|
|
}
|
|
|
|
protected function _checkCondition(PhpParser\Node\Expr $stmt, array &$vars_in_scope, array &$vars_possibly_in_scope)
|
|
{
|
|
return $this->_checkExpression($stmt, $vars_in_scope, $vars_possibly_in_scope);
|
|
}
|
|
|
|
protected function _checkStatic(PhpParser\Node\Stmt\Static_ $stmt, array &$vars_in_scope, array &$vars_possibly_in_scope = [])
|
|
{
|
|
foreach ($stmt->vars as $var) {
|
|
if ($var instanceof PhpParser\Node\Stmt\StaticVar) {
|
|
if (is_string($var->name)) {
|
|
if ($this->_check_variables) {
|
|
$vars_in_scope[$var->name] = Type::getMixed();
|
|
$vars_possibly_in_scope[$var->name] = true;
|
|
$this->registerVariable($var->name, $var->getLine());
|
|
}
|
|
} else {
|
|
if ($this->_checkExpression($var->name, $vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if ($var->default) {
|
|
if ($this->_checkExpression($var->default, $vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
}
|
|
} else {
|
|
if ($this->_checkExpression($var, $vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @return false|null
|
|
*/
|
|
protected function _checkExpression(PhpParser\Node\Expr $stmt, array &$vars_in_scope, array &$vars_possibly_in_scope = [], $array_assignment = false)
|
|
{
|
|
if ($stmt instanceof PhpParser\Node\Expr\Variable) {
|
|
return $this->_checkVariable($stmt, $vars_in_scope, $vars_possibly_in_scope, null, -1, $array_assignment);
|
|
|
|
} elseif ($stmt instanceof PhpParser\Node\Expr\Assign) {
|
|
return $this->_checkAssignment($stmt, $vars_in_scope, $vars_possibly_in_scope);
|
|
|
|
} elseif ($stmt instanceof PhpParser\Node\Expr\AssignOp) {
|
|
return $this->_checkAssignmentOperation($stmt, $vars_in_scope, $vars_possibly_in_scope);
|
|
|
|
} elseif ($stmt instanceof PhpParser\Node\Expr\MethodCall) {
|
|
return $this->_checkMethodCall($stmt, $vars_in_scope, $vars_possibly_in_scope);
|
|
|
|
} elseif ($stmt instanceof PhpParser\Node\Expr\StaticCall) {
|
|
return $this->_checkStaticCall($stmt, $vars_in_scope, $vars_possibly_in_scope);
|
|
|
|
} elseif ($stmt instanceof PhpParser\Node\Expr\ConstFetch) {
|
|
return $this->_checkConstFetch($stmt);
|
|
|
|
} elseif ($stmt instanceof PhpParser\Node\Scalar\String_) {
|
|
if (self::$_check_string_fn) {
|
|
call_user_func(self::$_check_string_fn, $stmt, $this->_file_name);
|
|
}
|
|
$stmt->returnType = Type::getString();
|
|
|
|
} elseif ($stmt instanceof PhpParser\Node\Scalar\EncapsedStringPart) {
|
|
// do nothing
|
|
|
|
} elseif ($stmt instanceof PhpParser\Node\Scalar\MagicConst) {
|
|
// do nothing
|
|
|
|
} elseif ($stmt instanceof PhpParser\Node\Scalar\LNumber) {
|
|
$stmt->returnType = Type::getInt();
|
|
|
|
} elseif ($stmt instanceof PhpParser\Node\Scalar\DNumber) {
|
|
$stmt->returnType = Type::getFloat();
|
|
|
|
} elseif ($stmt instanceof PhpParser\Node\Expr\UnaryMinus) {
|
|
return $this->_checkExpression($stmt->expr, $vars_in_scope, $vars_possibly_in_scope);
|
|
|
|
} elseif ($stmt instanceof PhpParser\Node\Expr\UnaryPlus) {
|
|
return $this->_checkExpression($stmt->expr, $vars_in_scope, $vars_possibly_in_scope);
|
|
|
|
} elseif ($stmt instanceof PhpParser\Node\Expr\Isset_) {
|
|
foreach ($stmt->vars as $isset_var) {
|
|
if ($isset_var instanceof PhpParser\Node\Expr\PropertyFetch &&
|
|
$isset_var->var instanceof PhpParser\Node\Expr\Variable &&
|
|
$isset_var->var->name === 'this' &&
|
|
is_string($isset_var->name)
|
|
) {
|
|
$var_id = 'this->' . $isset_var->name;
|
|
$vars_in_scope[$var_id] = Type::getMixed();
|
|
$vars_possibly_in_scope[$var_id] = true;
|
|
}
|
|
}
|
|
|
|
} elseif ($stmt instanceof PhpParser\Node\Expr\ClassConstFetch) {
|
|
return $this->_checkClassConstFetch($stmt, $vars_in_scope, $vars_possibly_in_scope);
|
|
|
|
} elseif ($stmt instanceof PhpParser\Node\Expr\PropertyFetch) {
|
|
return $this->_checkPropertyFetch($stmt, $vars_in_scope, $vars_possibly_in_scope, $array_assignment);
|
|
|
|
} elseif ($stmt instanceof PhpParser\Node\Expr\StaticPropertyFetch) {
|
|
return $this->_checkStaticPropertyFetch($stmt, $vars_in_scope, $vars_possibly_in_scope);
|
|
|
|
} elseif ($stmt instanceof PhpParser\Node\Expr\BitwiseNot) {
|
|
return $this->_checkExpression($stmt->expr, $vars_in_scope, $vars_possibly_in_scope);
|
|
|
|
} elseif ($stmt instanceof PhpParser\Node\Expr\BinaryOp) {
|
|
return $this->_checkBinaryOp($stmt, $vars_in_scope, $vars_possibly_in_scope);
|
|
|
|
} elseif ($stmt instanceof PhpParser\Node\Expr\PostInc) {
|
|
return $this->_checkExpression($stmt->var, $vars_in_scope, $vars_possibly_in_scope);
|
|
|
|
} elseif ($stmt instanceof PhpParser\Node\Expr\PostDec) {
|
|
return $this->_checkExpression($stmt->var, $vars_in_scope, $vars_possibly_in_scope);
|
|
|
|
} elseif ($stmt instanceof PhpParser\Node\Expr\PreInc) {
|
|
return $this->_checkExpression($stmt->var, $vars_in_scope, $vars_possibly_in_scope);
|
|
|
|
} elseif ($stmt instanceof PhpParser\Node\Expr\PreDec) {
|
|
return $this->_checkExpression($stmt->var, $vars_in_scope, $vars_possibly_in_scope);
|
|
|
|
} elseif ($stmt instanceof PhpParser\Node\Expr\New_) {
|
|
return $this->_checkNew($stmt, $vars_in_scope, $vars_possibly_in_scope);
|
|
|
|
} elseif ($stmt instanceof PhpParser\Node\Expr\Array_) {
|
|
return $this->_checkArray($stmt, $vars_in_scope, $vars_possibly_in_scope);
|
|
|
|
} elseif ($stmt instanceof PhpParser\Node\Scalar\Encapsed) {
|
|
return $this->_checkEncapsulatedString($stmt, $vars_in_scope, $vars_possibly_in_scope);
|
|
|
|
} elseif ($stmt instanceof PhpParser\Node\Expr\FuncCall) {
|
|
return $this->_checkFunctionCall($stmt, $vars_in_scope, $vars_possibly_in_scope);
|
|
|
|
} elseif ($stmt instanceof PhpParser\Node\Expr\Ternary) {
|
|
return $this->_checkTernary($stmt, $vars_in_scope, $vars_possibly_in_scope);
|
|
|
|
} elseif ($stmt instanceof PhpParser\Node\Expr\BooleanNot) {
|
|
return $this->_checkBooleanNot($stmt, $vars_in_scope, $vars_possibly_in_scope);
|
|
|
|
} elseif ($stmt instanceof PhpParser\Node\Expr\Empty_) {
|
|
return $this->_checkEmpty($stmt, $vars_in_scope, $vars_possibly_in_scope);
|
|
|
|
} elseif ($stmt instanceof PhpParser\Node\Expr\Closure) {
|
|
$closure_checker = new ClosureChecker($stmt, $this->_source);
|
|
|
|
if ($this->_checkClosureUses($stmt, $vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
|
|
$use_vars = [];
|
|
$use_vars_possibly_in_scope = [];
|
|
|
|
if (!$this->_is_static) {
|
|
$this_class = ClassChecker::getThisClass() && is_subclass_of(ClassChecker::getThisClass(), $this->_absolute_class) ?
|
|
ClassChecker::getThisClass() :
|
|
$this->_absolute_class;
|
|
|
|
$use_vars['this'] = new Type\Union([new Type\Atomic($this_class)]);
|
|
}
|
|
|
|
foreach ($vars_in_scope as $var => $type) {
|
|
if (strpos($var, 'this->') === 0) {
|
|
$use_vars[$var] = $type;
|
|
}
|
|
}
|
|
|
|
foreach ($vars_possibly_in_scope as $var => $type) {
|
|
if (strpos($var, 'this->') === 0) {
|
|
$use_vars_possibly_in_scope[$var] = true;
|
|
}
|
|
}
|
|
|
|
foreach ($stmt->uses as $use) {
|
|
$use_vars[$use->var] = isset($vars_in_scope[$use->var]) ? $vars_in_scope[$use->var] : 'mixed';
|
|
$use_vars_possibly_in_scope[$use->var] = true;
|
|
}
|
|
|
|
$closure_checker->check($use_vars, $use_vars_possibly_in_scope, $this->_check_methods);
|
|
|
|
} elseif ($stmt instanceof PhpParser\Node\Expr\ArrayDimFetch) {
|
|
return $this->_checkArrayAccess($stmt, $vars_in_scope, $vars_possibly_in_scope);
|
|
|
|
} elseif ($stmt instanceof PhpParser\Node\Expr\Cast\Int_) {
|
|
if ($this->_checkExpression($stmt->expr, $vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
$stmt->returnType = Type::getInt();
|
|
|
|
} elseif ($stmt instanceof PhpParser\Node\Expr\Cast\Double) {
|
|
if ($this->_checkExpression($stmt->expr, $vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
$stmt->returnType = Type::getDouble();
|
|
|
|
} elseif ($stmt instanceof PhpParser\Node\Expr\Cast\Bool_) {
|
|
if ($this->_checkExpression($stmt->expr, $vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
$stmt->returnType = Type::getBool();
|
|
|
|
} elseif ($stmt instanceof PhpParser\Node\Expr\Cast\String_) {
|
|
if ($this->_checkExpression($stmt->expr, $vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
$stmt->returnType = Type::getString();
|
|
|
|
} elseif ($stmt instanceof PhpParser\Node\Expr\Cast\Object_) {
|
|
if ($this->_checkExpression($stmt->expr, $vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
$stmt->returnType = Type::getObject();
|
|
|
|
} elseif ($stmt instanceof PhpParser\Node\Expr\Cast\Array_) {
|
|
if ($this->_checkExpression($stmt->expr, $vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
$stmt->returnType = Type::getArray();
|
|
|
|
} elseif ($stmt instanceof PhpParser\Node\Expr\Clone_) {
|
|
if ($this->_checkExpression($stmt->expr, $vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
|
|
if (property_exists($stmt->expr, 'returnType')) {
|
|
$stmt->returnType = $stmt->expr->returnType;
|
|
}
|
|
|
|
} elseif ($stmt instanceof PhpParser\Node\Expr\Instanceof_) {
|
|
if ($this->_checkExpression($stmt->expr, $vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
|
|
if ($stmt->class instanceof PhpParser\Node\Name && !in_array($stmt->class->parts[0], ['self', 'static', 'parent'])) {
|
|
if ($this->_check_classes) {
|
|
if (ClassChecker::checkClassName($stmt->class, $this->_namespace, $this->_aliased_classes, $this->_file_name) === false) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
} elseif ($stmt instanceof PhpParser\Node\Expr\Exit_) {
|
|
// do nothing
|
|
|
|
} elseif ($stmt instanceof PhpParser\Node\Expr\Include_) {
|
|
if ($this->_checkExpression($stmt->expr, $vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
|
|
$path_to_file = null;
|
|
|
|
if ($stmt->expr instanceof PhpParser\Node\Scalar\String_) {
|
|
$path_to_file = $stmt->expr->value;
|
|
|
|
// attempts to resolve using get_include_path dirs
|
|
$include_path = self::_resolveIncludePath($path_to_file, dirname($this->_file_name));
|
|
$path_to_file = $include_path ? $include_path : $path_to_file;
|
|
|
|
if ($path_to_file[0] !== '/') {
|
|
$path_to_file = getcwd() . '/' . $path_to_file;
|
|
}
|
|
}
|
|
else {
|
|
$path_to_file = self::_getPathTo($stmt->expr, $this->_file_name);
|
|
}
|
|
|
|
if ($path_to_file) {
|
|
$reduce_pattern = '/\/[^\/]+\/\.\.\//';
|
|
|
|
while (preg_match($reduce_pattern, $path_to_file)) {
|
|
$path_to_file = preg_replace($reduce_pattern, '/', $path_to_file);
|
|
}
|
|
|
|
// if the file is already included, we can't check much more
|
|
if (in_array($path_to_file, get_included_files())) {
|
|
return;
|
|
}
|
|
|
|
if (in_array($path_to_file, FileChecker::getIncludesToIgnore())) {
|
|
return;
|
|
}
|
|
|
|
if (file_exists($path_to_file)) {
|
|
$include_stmts = FileChecker::getStatements($path_to_file);
|
|
|
|
$this->_require_file_name = $path_to_file;
|
|
$this->check($include_stmts, $vars_in_scope, $vars_possibly_in_scope);
|
|
return;
|
|
}
|
|
}
|
|
|
|
$this->_check_classes = false;
|
|
$this->_check_variables = false;
|
|
|
|
} elseif ($stmt instanceof PhpParser\Node\Expr\Eval_) {
|
|
$this->_check_classes = false;
|
|
$this->_check_variables = false;
|
|
|
|
if ($this->_checkExpression($stmt->expr, $vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
|
|
} elseif ($stmt instanceof PhpParser\Node\Expr\AssignRef) {
|
|
if ($stmt->var instanceof PhpParser\Node\Expr\Variable) {
|
|
$vars_in_scope[$stmt->var->name] = Type::getMixed();
|
|
$vars_possibly_in_scope[$stmt->var->name] = true;
|
|
$this->registerVariable($stmt->var->name, $stmt->var->getLine());
|
|
} else {
|
|
if ($this->_checkExpression($stmt->var, $vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if ($this->_checkExpression($stmt->expr, $vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
|
|
} elseif ($stmt instanceof PhpParser\Node\Expr\ErrorSuppress) {
|
|
// do nothing
|
|
|
|
} elseif ($stmt instanceof PhpParser\Node\Expr\ShellExec) {
|
|
if (ExceptionHandler::accepts(
|
|
new ForbiddenCode('Use of shell_exec', $this->_file_name, $stmt->getLine())
|
|
)) {
|
|
return false;
|
|
}
|
|
|
|
} elseif ($stmt instanceof PhpParser\Node\Expr\Print_) {
|
|
if ($this->_checkExpression($stmt->expr, $vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
|
|
} else {
|
|
var_dump('Unrecognised expression in ' . $this->_file_name);
|
|
var_dump($stmt);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @return false|null
|
|
*/
|
|
protected function _checkVariable(PhpParser\Node\Expr\Variable $stmt, array &$vars_in_scope, array &$vars_possibly_in_scope, $method_id = null, $argument_offset = -1, $array_assignment = false)
|
|
{
|
|
if ($this->_is_static && $stmt->name === 'this') {
|
|
if (ExceptionHandler::accepts(
|
|
new InvalidStaticVariable('Invalid reference to $this in a static context', $this->_file_name, $stmt->getLine())
|
|
)) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (!$this->_check_variables) {
|
|
$stmt->returnType = Type::getMixed();
|
|
|
|
if (is_string($stmt->name)) {
|
|
$vars_in_scope[$stmt->name] = Type::getMixed();
|
|
$vars_possibly_in_scope[$stmt->name] = true;
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
if (in_array($stmt->name, ['_SERVER', '_GET', '_POST', '_COOKIE', '_REQUEST', '_FILES', '_ENV', 'GLOBALS', 'argv'])) {
|
|
return;
|
|
}
|
|
|
|
if (!is_string($stmt->name)) {
|
|
return $this->_checkExpression($stmt->name, $vars_in_scope, $vars_possibly_in_scope);
|
|
}
|
|
|
|
if ($method_id && isset($vars_in_scope[$stmt->name]) && !$vars_in_scope[$stmt->name]->isMixed()) {
|
|
if ($this->_checkFunctionArgumentType($vars_in_scope[$stmt->name], $method_id, $argument_offset, $this->_file_name, $stmt->getLine()) === false) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if ($stmt->name === 'this') {
|
|
return;
|
|
}
|
|
|
|
if ($method_id && $this->_isPassedByReference($method_id, $argument_offset)) {
|
|
$this->_assignByRefParam($stmt, $method_id, $vars_in_scope, $vars_possibly_in_scope);
|
|
return;
|
|
}
|
|
|
|
$var_name = $stmt->name;
|
|
|
|
if (!isset($vars_in_scope[$var_name])) {
|
|
if (!isset($vars_possibly_in_scope[$var_name]) || !isset($this->_all_vars[$var_name])) {
|
|
if ($array_assignment) {
|
|
// if we're in an array assignment, let's assign the variable
|
|
// because PHP allows it
|
|
|
|
$vars_in_scope[$var_name] = Type::getArray();
|
|
$vars_possibly_in_scope[$var_name] = true;
|
|
$this->registerVariable($var_name, $stmt->getLine());
|
|
}
|
|
else {
|
|
if (ExceptionHandler::accepts(
|
|
new UndefinedVariable('Cannot find referenced variable $' . $var_name, $this->_file_name, $stmt->getLine())
|
|
)) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (isset($this->_all_vars[$var_name]) && !isset($this->_warn_vars[$var_name])) {
|
|
$this->_warn_vars[$var_name] = true;
|
|
|
|
if (ExceptionHandler::accepts(
|
|
new PossiblyUndefinedVariable(
|
|
'Possibly undefined variable $' . $var_name .', first seen on line ' . $this->_all_vars[$var_name],
|
|
$this->_file_name,
|
|
$stmt->getLine()
|
|
)
|
|
)) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
} else {
|
|
$stmt->returnType = $vars_in_scope[$var_name];
|
|
}
|
|
}
|
|
|
|
protected function _assignByRefParam(PhpParser\Node\Expr $stmt, $method_id, array &$vars_in_scope, array &$vars_possibly_in_scope)
|
|
{
|
|
if ($stmt instanceof PhpParser\Node\Expr\Variable) {
|
|
$property_id = $stmt->name;
|
|
}
|
|
else if ($stmt instanceof PhpParser\Node\Expr\PropertyFetch && $stmt->var->name === 'this') {
|
|
$property_id = $stmt->var->name . '->' . $stmt->name;
|
|
}
|
|
else {
|
|
throw new \InvalidArgumentException('Bad property passed to _checkMethodParam');
|
|
}
|
|
|
|
if (!isset($vars_in_scope[$property_id])) {
|
|
$vars_possibly_in_scope[$property_id] = true;
|
|
$this->registerVariable($property_id, $stmt->getLine());
|
|
|
|
if ($stmt instanceof PhpParser\Node\Expr\PropertyFetch && $this->_source->getMethodId()) {
|
|
$this_method_id = $this->_source->getMethodId();
|
|
|
|
if (!isset(self::$_this_assignments[$this_method_id])) {
|
|
self::$_this_assignments[$this_method_id] = [];
|
|
}
|
|
|
|
self::$_this_assignments[$this_method_id][$stmt->name] = Type::getMixed();
|
|
}
|
|
}
|
|
|
|
$vars_in_scope[$property_id] = Type::getMixed();
|
|
}
|
|
|
|
protected function _checkPropertyFetch(PhpParser\Node\Expr\PropertyFetch $stmt, array &$vars_in_scope, array &$vars_possibly_in_scope, $array_assignment = false)
|
|
{
|
|
if (!is_string($stmt->name)) {
|
|
if ($this->_checkExpression($stmt->name, $vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if ($stmt->var instanceof PhpParser\Node\Expr\Variable) {
|
|
if ($stmt->var->name === 'this') {
|
|
if (is_string($stmt->name)) {
|
|
return $this->_checkThisPropertyFetch($stmt, $vars_in_scope, $vars_possibly_in_scope, $array_assignment);
|
|
}
|
|
}
|
|
|
|
return $this->_checkVariable($stmt->var, $vars_in_scope, $vars_possibly_in_scope);
|
|
|
|
}
|
|
|
|
return $this->_checkExpression($stmt->var, $vars_in_scope, $vars_possibly_in_scope);
|
|
}
|
|
|
|
protected function _checkThisPropertyFetch(PhpParser\Node\Expr\PropertyFetch $stmt, array &$vars_in_scope, array &$vars_possibly_in_scope, $array_assignment = false)
|
|
{
|
|
$class_checker = $this->_source->getClassChecker();
|
|
|
|
if (!$class_checker) {
|
|
if (ExceptionHandler::accepts(
|
|
new InvalidScope('Cannot use $this when not inside class', $this->_file_name, $stmt->getLine())
|
|
)) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
$var_id = self::_getVarId($stmt);
|
|
$property_names = $class_checker->getPropertyNames();
|
|
|
|
if (isset($vars_in_scope[$var_id])) {
|
|
$stmt->returnType = $vars_in_scope[$var_id];
|
|
}
|
|
|
|
if (!in_array($stmt->name, $property_names)) {
|
|
$property_id = $this->_absolute_class . '::' . $stmt->name;
|
|
|
|
$var_defined = isset($vars_in_scope[$var_id]) || isset($vars_possibly_in_scope[$var_id]);
|
|
|
|
if ((ClassChecker::getThisClass() && !$var_defined) || (!ClassChecker::getThisClass() && !$var_defined && !self::_propertyExists($property_id))) {
|
|
if ($array_assignment) {
|
|
// if we're in an array assignment, let's assign the variable
|
|
// because PHP allows it
|
|
|
|
$vars_in_scope[$var_id] = Type::getArray();
|
|
$vars_possibly_in_scope[$var_id] = true;
|
|
$this->registerVariable($var_id, $stmt->getLine());
|
|
}
|
|
else {
|
|
if (ExceptionHandler::accepts(
|
|
new UndefinedProperty('$' . $var_id . ' is not defined', $this->_file_name, $stmt->getLine())
|
|
)) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
}
|
|
}
|
|
}
|
|
|
|
protected function _checkNew(PhpParser\Node\Expr\New_ $stmt, array &$vars_in_scope, array &$vars_possibly_in_scope)
|
|
{
|
|
$absolute_class = null;
|
|
|
|
if ($stmt->class instanceof PhpParser\Node\Name && !in_array($stmt->class->parts[0], ['self', 'static', 'parent'])) {
|
|
if ($this->_check_classes) {
|
|
if (ClassChecker::checkClassName($stmt->class, $this->_namespace, $this->_aliased_classes, $this->_file_name) === false) {
|
|
return false;
|
|
}
|
|
|
|
$absolute_class = ClassChecker::getAbsoluteClassFromName($stmt->class, $this->_namespace, $this->_aliased_classes);
|
|
$stmt->returnType = new Type\Union([new Type\Atomic($absolute_class)]);
|
|
}
|
|
}
|
|
|
|
if ($absolute_class) {
|
|
$method_id = $absolute_class . '::__construct';
|
|
|
|
if ($this->_checkMethodParams($stmt->args, $method_id, $vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
protected function _checkArray(PhpParser\Node\Expr\Array_ $stmt, array &$vars_in_scope, array &$vars_possibly_in_scope)
|
|
{
|
|
// if the array is empty, this special type allows us to match any other array type against it
|
|
if (empty($stmt->items)) {
|
|
$stmt->returnType = new Type\Union([new Type\Generic('array', [new Type\Atomic('empty')], true)]);
|
|
return;
|
|
}
|
|
|
|
foreach ($stmt->items as $item) {
|
|
if ($item->key) {
|
|
if ($this->_checkExpression($item->key, $vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if ($this->_checkExpression($item->value, $vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
$stmt->returnType = Type::getArray();
|
|
}
|
|
|
|
protected function _checkTryCatch(PhpParser\Node\Stmt\TryCatch $stmt, array &$vars_in_scope, array &$vars_possibly_in_scope)
|
|
{
|
|
$this->check($stmt->stmts, $vars_in_scope, $vars_possibly_in_scope);
|
|
|
|
foreach ($stmt->catches as $catch) {
|
|
$vars_in_scope[$catch->var] = new Type\Union([
|
|
new Type\Atomic(ClassChecker::getAbsoluteClassFromName($catch->type, $this->_namespace, $this->_aliased_classes))
|
|
]);
|
|
$vars_possibly_in_scope[$catch->var] = true;
|
|
$this->registerVariable($catch->var, $catch->getLine());
|
|
|
|
if ($this->_check_classes) {
|
|
if (ClassChecker::checkClassName($catch->type, $this->_namespace, $this->_aliased_classes, $this->_file_name) === false) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
$this->check($catch->stmts, $vars_in_scope, $vars_possibly_in_scope);
|
|
}
|
|
|
|
if ($stmt->finallyStmts) {
|
|
$this->check($stmt->finallyStmts, $vars_in_scope, $vars_possibly_in_scope);
|
|
}
|
|
}
|
|
|
|
protected function _checkFor(PhpParser\Node\Stmt\For_ $stmt, array &$vars_in_scope, array &$vars_possibly_in_scope)
|
|
{
|
|
$for_vars = array_merge([], $vars_in_scope);
|
|
|
|
foreach ($stmt->init as $init) {
|
|
if ($this->_checkExpression($init, $for_vars, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
foreach ($stmt->cond as $condition) {
|
|
if ($this->_checkCondition($condition, $for_vars, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
foreach ($stmt->loop as $expr) {
|
|
if ($this->_checkExpression($expr, $for_vars, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
$for_vars_possibly_in_scope = [];
|
|
|
|
$this->check($stmt->stmts, $for_vars, $vars_possibly_in_scope, $for_vars_possibly_in_scope);
|
|
|
|
foreach ($vars_in_scope as $var => $type) {
|
|
if ($type->isMixed()) {
|
|
continue;
|
|
}
|
|
|
|
if ($for_vars[$var]->isMixed()) {
|
|
$vars_in_scope[$var] = $for_vars[$var];
|
|
}
|
|
|
|
if ((string) $for_vars[$var] !== (string) $type) {
|
|
$vars_in_scope[$var] = Type::combineUnionTypes($vars_in_scope[$var], $for_vars[$var]);
|
|
}
|
|
}
|
|
|
|
$vars_possibly_in_scope = array_merge($for_vars_possibly_in_scope, $vars_possibly_in_scope);
|
|
}
|
|
|
|
protected function _checkForeach(PhpParser\Node\Stmt\Foreach_ $stmt, array &$vars_in_scope, array &$vars_possibly_in_scope)
|
|
{
|
|
if ($this->_checkExpression($stmt->expr, $vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
|
|
$foreach_vars = [];
|
|
|
|
if ($stmt->keyVar) {
|
|
$foreach_vars[$stmt->keyVar->name] = Type::getMixed();
|
|
$vars_possibly_in_scope[$stmt->keyVar->name] = true;
|
|
$this->registerVariable($stmt->keyVar->name, $stmt->getLine());
|
|
}
|
|
|
|
if ($stmt->valueVar) {
|
|
$value_type = null;
|
|
|
|
$var_id = self::_getVarId($stmt->expr);
|
|
|
|
$iterator_type = isset($vars_in_scope[$var_id]) ? $vars_in_scope[$var_id] : null;
|
|
|
|
if ($iterator_type) {
|
|
foreach ($iterator_type->types as $return_type) {
|
|
switch ($return_type->value) {
|
|
case 'mixed':
|
|
case 'array':
|
|
// do nothing
|
|
break;
|
|
|
|
case 'null':
|
|
if (ExceptionHandler::accepts(
|
|
new NullReference('Cannot iterate over ' . $return_type->value, $this->_file_name, $stmt->getLine())
|
|
)) {
|
|
return false;
|
|
}
|
|
break;
|
|
|
|
case 'string':
|
|
case 'void':
|
|
case 'int':
|
|
if (ExceptionHandler::accepts(
|
|
new InvalidIterator('Cannot iterate over ' . $return_type->value, $this->_file_name, $stmt->getLine())
|
|
)) {
|
|
return false;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
if ($iterator_type instanceof Type\Generic) {
|
|
$value_type = $iterator_type->type_params[0];
|
|
}
|
|
|
|
if ($return_type->value !== 'array' && $return_type->value !== 'Traversable' && $return_type->value !== $this->_class_name) {
|
|
if (ClassChecker::checkAbsoluteClass($return_type->value, $stmt, $this->_file_name) === false) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
$foreach_vars[$stmt->valueVar->name] = $value_type ? $value_type : Type::getMixed();
|
|
$vars_possibly_in_scope[$stmt->valueVar->name] = true;
|
|
$this->registerVariable($stmt->valueVar->name, $stmt->getLine());
|
|
}
|
|
|
|
$foreach_vars = array_merge($vars_in_scope, $foreach_vars);
|
|
|
|
$foreach_vars_possibly_in_scope = [];
|
|
|
|
$this->check($stmt->stmts, $foreach_vars, $vars_possibly_in_scope, $foreach_vars_possibly_in_scope);
|
|
|
|
foreach ($vars_in_scope as $var => $type) {
|
|
if ($type->isMixed()) {
|
|
continue;
|
|
}
|
|
|
|
if ($foreach_vars[$var]->isMixed()) {
|
|
$vars_in_scope[$var] = $foreach_vars[$var];
|
|
}
|
|
|
|
if ((string) $foreach_vars[$var] !== (string) $type) {
|
|
$vars_in_scope[$var] = Type::combineUnionTypes($vars_in_scope[$var], $foreach_vars[$var]);
|
|
}
|
|
}
|
|
|
|
$vars_possibly_in_scope = array_merge($foreach_vars_possibly_in_scope, $vars_possibly_in_scope);
|
|
}
|
|
|
|
protected function _checkWhile(PhpParser\Node\Stmt\While_ $stmt, array &$vars_in_scope, array &$vars_possibly_in_scope)
|
|
{
|
|
if ($this->_checkCondition($stmt->cond, $vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
|
|
$while_vars = array_merge([], $vars_in_scope);
|
|
|
|
$while_types = $this->_type_checker->getTypeAssertions($stmt->cond, true);
|
|
|
|
// if the while has an or as the main component, we cannot safely reason about it
|
|
if ($stmt->cond instanceof PhpParser\Node\Expr\BinaryOp && self::_containsBooleanOr($stmt->cond)) {
|
|
$while_vars = array_merge([], $vars_in_scope);
|
|
}
|
|
else {
|
|
$while_vars_in_scope_reconciled = TypeChecker::reconcileKeyedTypes($while_types, $while_vars, $this->_file_name, $stmt->getLine());
|
|
|
|
if ($while_vars_in_scope_reconciled === false) {
|
|
return false;
|
|
}
|
|
|
|
$while_vars = $while_vars_in_scope_reconciled;
|
|
}
|
|
|
|
if ($this->check($stmt->stmts, $while_vars, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
|
|
foreach ($vars_in_scope as $var => $type) {
|
|
if ($type->isMixed()) {
|
|
continue;
|
|
}
|
|
|
|
if ($while_vars[$var]->isMixed()) {
|
|
$vars_in_scope[$var] = $while_vars[$var];
|
|
}
|
|
|
|
if ($while_vars[$var] !== $type) {
|
|
$vars_in_scope[$var]->types = array_merge($vars_in_scope[$var]->types, $while_vars[$var]->types);
|
|
}
|
|
}
|
|
}
|
|
|
|
protected function _checkDo(PhpParser\Node\Stmt\Do_ $stmt, array &$vars_in_scope, array &$vars_possibly_in_scope)
|
|
{
|
|
if ($this->check($stmt->stmts, $vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
|
|
$vars_in_scope_copy = array_merge([], $vars_in_scope);
|
|
|
|
return $this->_checkCondition($stmt->cond, $vars_in_scope_copy, $vars_possibly_in_scope);
|
|
}
|
|
|
|
protected function _checkBinaryOp(PhpParser\Node\Expr\BinaryOp $stmt, array &$vars_in_scope, array &$vars_possibly_in_scope, $nesting = 0)
|
|
{
|
|
if ($stmt instanceof PhpParser\Node\Expr\BinaryOp\Concat && $nesting > 20) {
|
|
// ignore deeply-nested string concatenation
|
|
}
|
|
else if ($stmt instanceof PhpParser\Node\Expr\BinaryOp\BooleanAnd) {
|
|
$left_type_assertions = $this->_type_checker->getTypeAssertions($stmt->left, true);
|
|
|
|
if ($this->_checkExpression($stmt->left, $vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
|
|
// while in an and, we allow scope to boil over to support
|
|
// statements of the form if ($x && $x->foo())
|
|
$op_vars_in_scope = TypeChecker::reconcileKeyedTypes($left_type_assertions, $vars_in_scope, $this->_file_name, $stmt->getLine());
|
|
|
|
if ($op_vars_in_scope === false) {
|
|
return false;
|
|
}
|
|
|
|
if ($this->_checkExpression($stmt->right, $op_vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
}
|
|
else if ($stmt instanceof PhpParser\Node\Expr\BinaryOp\BooleanOr) {
|
|
$left_type_assertions = $this->_type_checker->getTypeAssertions($stmt->left, true);
|
|
|
|
$negated_type_assertions = TypeChecker::negateTypes($left_type_assertions);
|
|
|
|
if ($this->_checkExpression($stmt->left, $vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
|
|
// while in an or, we allow scope to boil over to support
|
|
// statements of the form if ($x === null || $x->foo())
|
|
$op_vars_in_scope = TypeChecker::reconcileKeyedTypes($negated_type_assertions, $vars_in_scope, $this->_file_name, $stmt->getLine());
|
|
|
|
if ($op_vars_in_scope === false) {
|
|
return false;
|
|
}
|
|
|
|
if ($this->_checkExpression($stmt->right, $op_vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
}
|
|
else {
|
|
if ($stmt instanceof PhpParser\Node\Expr\BinaryOp\Concat) {
|
|
$stmt->returnType = Type::getString();
|
|
}
|
|
|
|
if ($stmt->left instanceof PhpParser\Node\Expr\BinaryOp) {
|
|
if ($this->_checkBinaryOp($stmt->left, $vars_in_scope, $vars_possibly_in_scope, ++$nesting) === false) {
|
|
return false;
|
|
}
|
|
}
|
|
else {
|
|
if ($this->_checkExpression($stmt->left, $vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if ($stmt->right instanceof PhpParser\Node\Expr\BinaryOp) {
|
|
if ($this->_checkBinaryOp($stmt->right, $vars_in_scope, $vars_possibly_in_scope, ++$nesting) === false) {
|
|
return false;
|
|
}
|
|
}
|
|
else {
|
|
if ($this->_checkExpression($stmt->right, $vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
if ($stmt instanceof PhpParser\Node\Expr\BinaryOp\BooleanAnd ||
|
|
$stmt instanceof PhpParser\Node\Expr\BinaryOp\BooleanOr ||
|
|
$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
|
|
) {
|
|
$stmt->returnType = Type::getBool();
|
|
}
|
|
}
|
|
|
|
protected function _checkAssignment(PhpParser\Node\Expr\Assign $stmt, array &$vars_in_scope, array &$vars_possibly_in_scope)
|
|
{
|
|
if ($this->_checkExpression($stmt->expr, $vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
|
|
$type_in_comments = null;
|
|
$doc_comment = $stmt->getDocComment();
|
|
|
|
if ($doc_comment) {
|
|
$comments = self::parseDocComment($doc_comment);
|
|
|
|
if ($comments && isset($comments['specials']['var'][0])) {
|
|
$var_parts = array_filter(preg_split('/[\s\t]+/', $comments['specials']['var'][0]));
|
|
|
|
if ($var_parts && (count($var_parts) === 1 || $var_parts[1][0] !== '$')) {
|
|
$type_in_comments = $var_parts[0];
|
|
|
|
if ($type_in_comments[0] === strtoupper($type_in_comments[0])) {
|
|
$type_in_comments = ClassChecker::getAbsoluteClassFromString($type_in_comments, $this->_namespace, $this->_aliased_classes);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
$var_id = self::_getVarId($stmt->var);
|
|
|
|
if ($type_in_comments) {
|
|
$return_type = Type::parseString($type_in_comments);
|
|
}
|
|
elseif (isset($stmt->expr->returnType)) {
|
|
$return_type = $stmt->expr->returnType;
|
|
}
|
|
else {
|
|
$return_type = Type::getMixed();
|
|
}
|
|
|
|
if ($stmt->var instanceof PhpParser\Node\Expr\Variable && is_string($stmt->var->name)) {
|
|
$vars_in_scope[$var_id] = $return_type;
|
|
$vars_possibly_in_scope[$var_id] = true;
|
|
$this->registerVariable($var_id, $stmt->var->getLine());
|
|
|
|
} elseif ($stmt->var instanceof PhpParser\Node\Expr\List_) {
|
|
foreach ($stmt->var->vars as $var) {
|
|
if ($var) {
|
|
$vars_in_scope[$var->name] = Type::getMixed();
|
|
$vars_possibly_in_scope[$var->name] = true;
|
|
$this->registerVariable($var->name, $var->getLine());
|
|
}
|
|
}
|
|
|
|
} else if ($stmt->var instanceof PhpParser\Node\Expr\ArrayDimFetch) {
|
|
|
|
if ($this->_checkArrayAssignment($stmt->var, $vars_in_scope, $vars_possibly_in_scope, $return_type) == false) {
|
|
return false;
|
|
}
|
|
|
|
} else if ($stmt->var instanceof PhpParser\Node\Expr\PropertyFetch &&
|
|
$stmt->var->var instanceof PhpParser\Node\Expr\Variable &&
|
|
$stmt->var->var->name === 'this' &&
|
|
is_string($stmt->var->name)) {
|
|
|
|
$method_id = $this->_source->getMethodId();
|
|
|
|
if (!isset(self::$_this_assignments[$method_id])) {
|
|
self::$_this_assignments[$method_id] = [];
|
|
}
|
|
|
|
$property_id = $this->_absolute_class . '::' . $stmt->var->name;
|
|
self::$_existing_properties[$property_id] = 1;
|
|
|
|
$vars_in_scope[$var_id] = $return_type;
|
|
$vars_possibly_in_scope[$var_id] = true;
|
|
|
|
// right now we have to settle for mixed
|
|
self::$_this_assignments[$method_id][$stmt->var->name] = Type::getMixed();
|
|
}
|
|
|
|
if ($var_id && isset($vars_in_scope[$var_id]) && $vars_in_scope[$var_id] instanceof Type\Void) {
|
|
if (ExceptionHandler::accepts(
|
|
new FailedTypeResolution('Cannot assign $' . $var_id . ' to type void', $this->_file_name, $stmt->getLine())
|
|
)) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
protected static function _getVarId(PhpParser\Node\Expr $stmt)
|
|
{
|
|
if ($stmt instanceof PhpParser\Node\Expr\Variable && is_string($stmt->name)) {
|
|
return $stmt->name;
|
|
}
|
|
else if ($stmt instanceof PhpParser\Node\Expr\PropertyFetch &&
|
|
$stmt->var instanceof PhpParser\Node\Expr\Variable &&
|
|
is_string($stmt->name)) {
|
|
|
|
$object_id = self::_getVarId($stmt->var);
|
|
|
|
if (!$object_id) {
|
|
return null;
|
|
}
|
|
|
|
return $object_id . '->' . $stmt->name;
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
protected function _checkArrayAssignment(PhpParser\Node\Expr\ArrayDimFetch $stmt, array &$vars_in_scope, array &$vars_possibly_in_scope, Type\Union $assignment_type)
|
|
{
|
|
if ($this->_checkExpression($stmt->var, $vars_in_scope, $vars_possibly_in_scope, true) === false) {
|
|
return false;
|
|
}
|
|
|
|
$var_id = self::_getVarId($stmt->var);
|
|
|
|
if (isset($stmt->var->returnType)) {
|
|
$return_type = $stmt->var->returnType;
|
|
|
|
if (!$return_type->isMixed()) {
|
|
|
|
foreach ($return_type->types as &$type) {
|
|
if ($type->isScalar()) {
|
|
if (ExceptionHandler::accepts(
|
|
new InvalidArrayAssignment('Cannot assign value on variable $' . $var_id . ' of scalar type ' . $type->value, $this->_file_name, $stmt->getLine())
|
|
)) {
|
|
return false;
|
|
}
|
|
|
|
continue;
|
|
}
|
|
$refined_type = $this->_refineArrayType($type, $assignment_type, $var_id, $stmt->getLine());
|
|
|
|
if ($refined_type === false) {
|
|
return false;
|
|
}
|
|
|
|
$type = $refined_type;
|
|
}
|
|
|
|
$vars_in_scope[$var_id] = $return_type;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
*
|
|
* @param Type\Atomic $type
|
|
* @param string $var_id
|
|
* @param int $line_number
|
|
* @return Type\Atomic
|
|
*/
|
|
protected function _refineArrayType(Type\Atomic $type, Type\Union $assignment_type, $var_id, $line_number)
|
|
{
|
|
if ($type->value === 'null') {
|
|
if (ExceptionHandler::accepts(
|
|
new NullReference('Cannot assign value on possibly null array ' . $var_id, $this->_file_name, $line_number)
|
|
)) {
|
|
return false;
|
|
}
|
|
|
|
return $type;
|
|
}
|
|
|
|
if ($type->value !== 'array' && !ClassChecker::classImplements($type->value, 'ArrayAccess')) {
|
|
if (ExceptionHandler::accepts(
|
|
new InvalidArrayAssignment('Cannot assign value on variable ' . $var_id . ' that does not implement ArrayAccess', $this->_file_name, $line_number)
|
|
)) {
|
|
return false;
|
|
}
|
|
|
|
return $type;
|
|
}
|
|
|
|
if ($type instanceof Type\Generic) {
|
|
if ($type->is_empty) {
|
|
// boil this down to a regular array
|
|
if ($assignment_type->isMixed()) {
|
|
return new Type\Atomic($type->value);
|
|
}
|
|
|
|
$type->type_params = $assignment_type->types;
|
|
$type->is_empty = false;
|
|
return $type;
|
|
}
|
|
|
|
$array_type = $type->type_params[0] instanceof Type\Union ? $type->type_params[0] : new Type\Union([$type->type_params[0]]);
|
|
|
|
if ((string) $array_type !== (string) $assignment_type) {
|
|
$type->type_params[0] = Type::combineUnionTypes($array_type, $assignment_type);
|
|
return $type;
|
|
}
|
|
}
|
|
|
|
|
|
|
|
return $type;
|
|
}
|
|
|
|
protected function _checkAssignmentOperation(PhpParser\Node\Expr\AssignOp $stmt, array &$vars_in_scope, array &$vars_possibly_in_scope)
|
|
{
|
|
if ($this->_checkExpression($stmt->var, $vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
|
|
return $this->_checkExpression($stmt->expr, $vars_in_scope, $vars_possibly_in_scope);
|
|
}
|
|
|
|
protected function _checkMethodCall(PhpParser\Node\Expr\MethodCall $stmt, array &$vars_in_scope, array &$vars_possibly_in_scope)
|
|
{
|
|
if ($this->_checkExpression($stmt->var, $vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
|
|
$class_type = null;
|
|
$method_id = null;
|
|
|
|
if ($stmt->var instanceof PhpParser\Node\Expr\Variable) {
|
|
if (!is_string($stmt->var->name)) {
|
|
if ($this->_checkExpression($stmt->var->name, $vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
}
|
|
else if ($stmt->var->name === 'this' && !$this->_class_name) {
|
|
if (ExceptionHandler::accepts(
|
|
new InvalidScope('Use of $this in non-class context', $this->_file_name, $stmt->getLine())
|
|
)) {
|
|
return false;
|
|
}
|
|
}
|
|
} elseif ($stmt->var instanceof PhpParser\Node\Expr) {
|
|
if ($this->_checkExpression($stmt->var, $vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
$var_id = self::_getVarId($stmt->var);
|
|
|
|
$class_type = isset($vars_in_scope[$var_id]) ? $vars_in_scope[$var_id] : null;
|
|
|
|
// make sure we stay vague here
|
|
if (!$class_type) {
|
|
$stmt->returnType = Type::getMixed();
|
|
}
|
|
|
|
if ($stmt->var instanceof PhpParser\Node\Expr\Variable && $stmt->var->name === 'this' && is_string($stmt->name)) {
|
|
$this_method_id = $this->_source->getMethodId();
|
|
|
|
if (!isset(self::$_this_calls[$this_method_id])) {
|
|
self::$_this_calls[$this_method_id] = [];
|
|
}
|
|
|
|
self::$_this_calls[$this_method_id][] = $stmt->name;
|
|
|
|
if (ClassChecker::getThisClass() &&
|
|
(
|
|
ClassChecker::getThisClass() === $this->_absolute_class ||
|
|
is_subclass_of(ClassChecker::getThisClass(), $this->_absolute_class) ||
|
|
trait_exists($this->_absolute_class)
|
|
)) {
|
|
|
|
$method_id = $this->_absolute_class . '::' . $stmt->name;
|
|
|
|
if ($this->_checkInsideMethod($method_id, $vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!$this->_check_methods) {
|
|
return;
|
|
}
|
|
|
|
if ($class_type && is_string($stmt->name)) {
|
|
foreach ($class_type->types as $type) {
|
|
$absolute_class = $type->value;
|
|
|
|
switch ($absolute_class) {
|
|
case 'null':
|
|
if (ExceptionHandler::accepts(
|
|
new NullReference('Cannot call method ' . $stmt->name . ' on possibly null variable ' . $class_type, $this->_file_name, $stmt->getLine())
|
|
)) {
|
|
return false;
|
|
}
|
|
break;
|
|
|
|
case 'int':
|
|
case 'bool':
|
|
case 'array':
|
|
if (ExceptionHandler::accepts(
|
|
new InvalidArgument('Cannot call method ' . $stmt->name . ' on ' . $class_type . ' variable', $this->_file_name, $stmt->getLine())
|
|
)) {
|
|
return false;
|
|
}
|
|
break;
|
|
|
|
case 'mixed':
|
|
break;
|
|
|
|
default:
|
|
if ($absolute_class[0] === strtoupper($absolute_class[0]) && !method_exists($absolute_class, '__call') && !self::isMock($absolute_class)) {
|
|
if (ClassChecker::checkAbsoluteClass($absolute_class, $stmt, $this->_file_name) === false) {
|
|
return false;
|
|
}
|
|
|
|
$method_id = $absolute_class . '::' . $stmt->name;
|
|
|
|
if (!isset(self::$_method_call_index[$method_id])) {
|
|
self::$_method_call_index[$method_id] = [];
|
|
}
|
|
|
|
if ($this->_source instanceof ClassMethodChecker) {
|
|
self::$_method_call_index[$method_id][] = $this->_source->getMethodId();
|
|
}
|
|
else {
|
|
self::$_method_call_index[$method_id][] = $this->_source->getFileName();
|
|
}
|
|
|
|
ClassMethodChecker::checkMethodExists($method_id, $this->_file_name, $stmt);
|
|
|
|
if (!($this->_source->getSource() instanceof TraitChecker)) {
|
|
$calling_context = $this->_absolute_class;
|
|
|
|
if (ClassChecker::getThisClass() && is_subclass_of(ClassChecker::getThisClass(), $this->_absolute_class)) {
|
|
$calling_context = $this->_absolute_class;
|
|
}
|
|
|
|
ClassMethodChecker::checkMethodVisibility($method_id, $calling_context, $this->_file_name, $stmt->getLine());
|
|
}
|
|
|
|
$return_types = ClassMethodChecker::getMethodReturnTypes($method_id);
|
|
|
|
if ($return_types) {
|
|
$return_types = self::_fleshOutReturnTypes($return_types, $stmt->args, $method_id);
|
|
|
|
$stmt->returnType = $return_types;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if ($this->_checkMethodParams($stmt->args, $method_id, $vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
protected function _checkInsideMethod($method_id, array &$vars_in_scope, array &$vars_possibly_in_scope)
|
|
{
|
|
$method_checker = ClassChecker::getMethodChecker($method_id);
|
|
|
|
if ($method_checker && $method_checker->getMethodId() !== $this->_source->getMethodId()) {
|
|
$this_vars_in_scope = [];
|
|
|
|
$this_vars_possibly_in_scope = [];
|
|
|
|
foreach ($vars_possibly_in_scope as $var => $type) {
|
|
if (strpos($var, 'this->') === 0) {
|
|
$this_vars_possibly_in_scope[$var] = true;
|
|
}
|
|
}
|
|
|
|
foreach ($vars_in_scope as $var => $type) {
|
|
if (strpos($var, 'this->') === 0) {
|
|
$this_vars_in_scope[$var] = $type;
|
|
}
|
|
}
|
|
|
|
$method_checker->check($this_vars_in_scope, $this_vars_possibly_in_scope);
|
|
|
|
foreach ($this_vars_in_scope as $var => $type) {
|
|
$vars_possibly_in_scope[$var] = true;
|
|
}
|
|
|
|
foreach ($this_vars_in_scope as $var => $type) {
|
|
$vars_in_scope[$var] = $type;
|
|
}
|
|
}
|
|
}
|
|
|
|
protected function _checkClosureUses(PhpParser\Node\Expr\Closure $stmt, array &$vars_in_scope, array &$vars_possibly_in_scope)
|
|
{
|
|
foreach ($stmt->uses as $use) {
|
|
if (!isset($vars_in_scope[$use->var])) {
|
|
if ($use->byRef) {
|
|
$vars_in_scope[$use->var] = Type::getMixed();
|
|
$vars_possibly_in_scope[$use->var] = true;
|
|
$this->registerVariable($use->var, $use->getLine());
|
|
return;
|
|
}
|
|
|
|
if (!isset($vars_possibly_in_scope[$use->var])) {
|
|
if (ExceptionHandler::accepts(
|
|
new UndefinedVariable('Cannot find referenced variable $' . $use->var, $this->_file_name, $use->getLine())
|
|
)) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (isset($this->_all_vars[$use->var])) {
|
|
if (!isset($this->_warn_vars[$use->var])) {
|
|
$this->_warn_vars[$use->var] = true;
|
|
if (ExceptionHandler::accepts(
|
|
new PossiblyUndefinedVariable(
|
|
'Possibly undefined variable $' . $use->var . ', first seen on line ' . $this->_all_vars[$use->var],
|
|
$this->_file_name,
|
|
$use->getLine()
|
|
)
|
|
)) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
if (ExceptionHandler::accepts(
|
|
new UndefinedVariable('Cannot find referenced variable $' . $use->var, $this->_file_name, $use->getLine())
|
|
)) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @return void
|
|
*/
|
|
protected function _checkStaticCall(PhpParser\Node\Expr\StaticCall $stmt, array &$vars_in_scope, array &$vars_possibly_in_scope)
|
|
{
|
|
if ($stmt->class instanceof PhpParser\Node\Expr\Variable || $stmt->class instanceof PhpParser\Node\Expr\ArrayDimFetch) {
|
|
// this is when calling $some_class::staticMethod() - which is a shitty way of doing things
|
|
// because it can't be statically type-checked
|
|
return;
|
|
}
|
|
|
|
$method_id = null;
|
|
$absolute_class = null;
|
|
|
|
if (count($stmt->class->parts) === 1 && in_array($stmt->class->parts[0], ['self', 'static', 'parent'])) {
|
|
if ($stmt->class->parts[0] === 'parent') {
|
|
if ($this->_class_extends === null) {
|
|
if (ExceptionHandler::accepts(
|
|
new ParentNotFound('Cannot call method on parent as this class does not extend another', $this->_file_name, $stmt->getLine())
|
|
)) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
$absolute_class = $this->_class_extends;
|
|
} else {
|
|
$absolute_class = ($this->_namespace ? $this->_namespace . '\\' : '') . $this->_class_name;
|
|
}
|
|
|
|
} elseif ($this->_check_classes) {
|
|
if (ClassChecker::checkClassName($stmt->class, $this->_namespace, $this->_aliased_classes, $this->_file_name) === false) {
|
|
return false;
|
|
}
|
|
$absolute_class = ClassChecker::getAbsoluteClassFromName($stmt->class, $this->_namespace, $this->_aliased_classes);
|
|
}
|
|
|
|
if (!$this->_check_methods) {
|
|
return;
|
|
}
|
|
|
|
if ($stmt->class->parts === ['parent'] && is_string($stmt->name)) {
|
|
if (ClassChecker::getThisClass()) {
|
|
$method_id = $absolute_class . '::' . $stmt->name;
|
|
|
|
if ($this->_checkInsideMethod($method_id, $vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
if ($absolute_class && is_string($stmt->name) && !method_exists($absolute_class, '__callStatic') && !self::isMock($absolute_class)) {
|
|
$method_id = $absolute_class . '::' . $stmt->name;
|
|
|
|
if (!isset(self::$_method_call_index[$method_id])) {
|
|
self::$_method_call_index[$method_id] = [];
|
|
}
|
|
|
|
if ($this->_source instanceof ClassMethodChecker) {
|
|
self::$_method_call_index[$method_id][] = $this->_source->getMethodId();
|
|
}
|
|
else {
|
|
self::$_method_call_index[$method_id][] = $this->_source->getFileName();
|
|
}
|
|
|
|
ClassMethodChecker::checkMethodExists($method_id, $this->_file_name, $stmt);
|
|
ClassMethodChecker::checkMethodVisibility($method_id, $this->_absolute_class, $this->_file_name, $stmt->getLine());
|
|
|
|
if ($this->_is_static) {
|
|
if (!ClassMethodChecker::isGivenMethodStatic($method_id)) {
|
|
if (ExceptionHandler::accepts(
|
|
new InvalidStaticInvocation('Method ' . $method_id . ' is not static', $this->_file_name, $stmt->getLine())
|
|
)) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
if ($stmt->class->parts[0] === 'self' && $stmt->name !== '__construct') {
|
|
if (!ClassMethodChecker::isGivenMethodStatic($method_id)) {
|
|
if (ExceptionHandler::accepts(
|
|
new InvalidStaticInvocation('Cannot call non-static method ' . $method_id . ' as if it were static', $this->_file_name, $stmt->getLine())
|
|
)) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
$return_types = ClassMethodChecker::getMethodReturnTypes($method_id);
|
|
|
|
if ($return_types) {
|
|
$return_types = self::_fleshOutReturnTypes($return_types, $stmt->args, $method_id);
|
|
$stmt->returnType = $return_types;
|
|
}
|
|
}
|
|
|
|
return $this->_checkMethodParams($stmt->args, $method_id, $vars_in_scope, $vars_possibly_in_scope);
|
|
}
|
|
|
|
protected static function _fleshOutReturnTypes(Type\Union $return_type, array $args, $method_id)
|
|
{
|
|
foreach ($return_type->types as $return_type_part) {
|
|
$return_type_part = self::_fleshOutAtomicReturnType($return_type_part, $args, $method_id);
|
|
}
|
|
|
|
return $return_type;
|
|
}
|
|
|
|
protected static function _fleshOutAtomicReturnType(Type\Atomic $return_type, array $args, $method_id)
|
|
{
|
|
if ($return_type->value === '$this' || $return_type->value === 'static') {
|
|
$absolute_class = explode('::', $method_id)[0];
|
|
|
|
$return_type->value = $absolute_class;
|
|
}
|
|
else if ($return_type->value[0] === '$') {
|
|
$method_params = ClassMethodChecker::getMethodParams($method_id);
|
|
|
|
foreach ($args as $i => $arg) {
|
|
$method_param = $method_params[$i];
|
|
|
|
if ($return_type->value === '$' . $method_param['name']) {
|
|
if ($arg->value instanceof PhpParser\Node\Scalar\String_) {
|
|
$return_type->value = preg_replace('/^\\\/', '', $arg->value->value);
|
|
}
|
|
}
|
|
}
|
|
|
|
if ($return_type->value[0] === '$') {
|
|
$return_type = Type::getMixed();
|
|
}
|
|
}
|
|
|
|
if ($return_type instanceof GenericType) {
|
|
foreach ($return_type->type_params as $type_param) {
|
|
if ($type_param instanceof Type\Union) {
|
|
$type_param = self::_fleshOutReturnTypes($type_param, $args, $method_id);
|
|
}
|
|
else {
|
|
$type_param = self::_fleshOutAtomicReturnType($type_param, $args, $method_id);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
protected static function _getMethodFromCallBlock($call, array $args, $method_id)
|
|
{
|
|
$absolute_class = explode('::', $method_id)[0];
|
|
|
|
$original_call = $call;
|
|
|
|
$call = preg_replace('/^\$this(->|::)/', $absolute_class . '::', $call);
|
|
|
|
$call = preg_replace('/\(\)$/', '', $call);
|
|
|
|
if (strpos($call, '$') !== false) {
|
|
$method_params = ClassMethodChecker::getMethodParams($method_id);
|
|
|
|
foreach ($args as $i => $arg) {
|
|
$method_param = $method_params[$i];
|
|
$preg_var_name = preg_quote('$' . $method_param['name']);
|
|
|
|
if (preg_match('/::' . $preg_var_name . '$/', $call)) {
|
|
if ($arg->value instanceof PhpParser\Node\Scalar\String_) {
|
|
$call = preg_replace('/' . $preg_var_name . '$/', $arg->value->value, $call);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return $original_call === $call || strpos($call, '$') !== false ? null : $call;
|
|
}
|
|
|
|
protected function _checkMethodParams(array $args, $method_id, array &$vars_in_scope, array &$vars_possibly_in_scope)
|
|
{
|
|
foreach ($args as $i => $arg) {
|
|
if ($arg->value instanceof PhpParser\Node\Expr\PropertyFetch &&
|
|
$arg->value->var instanceof PhpParser\Node\Expr\Variable &&
|
|
$arg->value->var->name === 'this' &&
|
|
is_string($arg->value->name)
|
|
) {
|
|
$property_id = 'this' . '->' . $arg->value->name;
|
|
|
|
if ($method_id) {
|
|
if (isset($vars_in_scope[$property_id]) && !$vars_in_scope[$property_id]->isMixed()) {
|
|
if ($this->_checkFunctionArgumentType($vars_in_scope[$property_id], $method_id, $i, $this->_file_name, $arg->getLine()) === false) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if ($this->_isPassedByReference($method_id, $i)) {
|
|
$this->_assignByRefParam($arg->value, $method_id, $vars_in_scope, $vars_possibly_in_scope);
|
|
}
|
|
else {
|
|
if ($this->_checkPropertyFetch($arg->value, $vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
}
|
|
} else {
|
|
|
|
if (false || !isset($vars_in_scope[$property_id]) || $vars_in_scope[$property_id]->isNull()) {
|
|
// we don't know if it exists, assume it's passed by reference
|
|
$vars_in_scope[$property_id] = Type::getMixed();
|
|
$vars_possibly_in_scope[$property_id] = true;
|
|
$this->registerVariable($property_id, $arg->value->getLine());
|
|
}
|
|
|
|
}
|
|
}
|
|
elseif ($arg->value instanceof PhpParser\Node\Expr\Variable) {
|
|
if ($method_id) {
|
|
if ($this->_checkVariable($arg->value, $vars_in_scope, $vars_possibly_in_scope, $method_id, $i) === false) {
|
|
return false;
|
|
}
|
|
|
|
} elseif (is_string($arg->value->name)) {
|
|
if (false || !isset($vars_in_scope[$arg->value->name]) || $vars_in_scope[$arg->value->name]->isNull()) {
|
|
// we don't know if it exists, assume it's passed by reference
|
|
$vars_in_scope[$arg->value->name] = Type::getMixed();
|
|
$vars_possibly_in_scope[$arg->value->name] = true;
|
|
$this->registerVariable($arg->value->name, $arg->value->getLine());
|
|
}
|
|
}
|
|
} else {
|
|
if ($this->_checkExpression($arg->value, $vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if ($method_id && isset($arg->value->returnType)) {
|
|
if ($this->_checkFunctionArgumentType($arg->value->returnType, $method_id, $i, $this->_file_name, $arg->value->getLine()) === false) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
protected function _checkConstFetch(PhpParser\Node\Expr\ConstFetch $stmt)
|
|
{
|
|
if ($stmt->name instanceof PhpParser\Node\Name) {
|
|
switch ($stmt->name->parts) {
|
|
case ['null']:
|
|
$stmt->returnType = Type::getNull();
|
|
break;
|
|
|
|
case ['false']:
|
|
// false is a subtype of bool
|
|
$stmt->returnType = Type::getFalse();
|
|
break;
|
|
|
|
case ['true']:
|
|
$stmt->returnType = Type::getBool();
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
protected function _checkClassConstFetch(PhpParser\Node\Expr\ClassConstFetch $stmt, array &$vars_in_scope, array &$vars_possibly_in_scope)
|
|
{
|
|
if ($this->_check_consts && $stmt->class instanceof PhpParser\Node\Name && $stmt->class->parts !== ['static']) {
|
|
if ($stmt->class->parts === ['self']) {
|
|
$absolute_class = $this->_absolute_class;
|
|
} else {
|
|
$absolute_class = ClassChecker::getAbsoluteClassFromName($stmt->class, $this->_namespace, $this->_aliased_classes);
|
|
if (ClassChecker::checkAbsoluteClass($absolute_class, $stmt, $this->_file_name) === false) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
$const_id = $absolute_class . '::' . $stmt->name;
|
|
|
|
if (!defined($const_id)) {
|
|
if (ExceptionHandler::accepts(
|
|
new UndefinedConstant('Const ' . $const_id . ' is not defined', $this->_file_name, $stmt->getLine())
|
|
)) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
if ($stmt->class instanceof PhpParser\Node\Expr) {
|
|
if ($this->_checkExpression($stmt->class, $vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @return null|false
|
|
*/
|
|
protected function _checkStaticPropertyFetch(PhpParser\Node\Expr\StaticPropertyFetch $stmt, array &$vars_in_scope, array &$vars_possibly_in_scope)
|
|
{
|
|
if ($stmt->class instanceof PhpParser\Node\Expr\Variable || $stmt->class instanceof PhpParser\Node\Expr\ArrayDimFetch) {
|
|
// this is when calling $some_class::staticMethod() - which is a shitty way of doing things
|
|
// because it can't be statically type-checked
|
|
return;
|
|
}
|
|
|
|
$method_id = null;
|
|
$absolute_class = null;
|
|
|
|
if (count($stmt->class->parts) === 1 && in_array($stmt->class->parts[0], ['self', 'static', 'parent'])) {
|
|
if ($stmt->class->parts[0] === 'parent') {
|
|
$absolute_class = $this->_class_extends;
|
|
} else {
|
|
$absolute_class = ($this->_namespace ? $this->_namespace . '\\' : '') . $this->_class_name;
|
|
}
|
|
} elseif ($this->_check_classes) {
|
|
if (ClassChecker::checkClassName($stmt->class, $this->_namespace, $this->_aliased_classes, $this->_file_name) === false) {
|
|
return false;
|
|
}
|
|
$absolute_class = ClassChecker::getAbsoluteClassFromName($stmt->class, $this->_namespace, $this->_aliased_classes);
|
|
}
|
|
|
|
if ($absolute_class && $this->_check_variables && is_string($stmt->name) && !self::isMock($absolute_class)) {
|
|
$var_id = $absolute_class . '::$' . $stmt->name;
|
|
|
|
if (!self::_staticVarExists($var_id)) {
|
|
if (ExceptionHandler::accepts(
|
|
new UndefinedVariable('Static variable ' . $var_id . ' does not exist', $this->_file_name, $stmt->getLine())
|
|
)) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
protected function _checkReturn(PhpParser\Node\Stmt\Return_ $stmt, array &$vars_in_scope, array &$vars_possibly_in_scope)
|
|
{
|
|
$type_in_comments = null;
|
|
$doc_comment = $stmt->getDocComment();
|
|
|
|
if ($doc_comment) {
|
|
$comments = self::parseDocComment($doc_comment);
|
|
|
|
if ($comments && isset($comments['specials']['var'][0])) {
|
|
$var_parts = array_filter(preg_split('/[\s\t]+/', $comments['specials']['var'][0]));
|
|
|
|
if ($var_parts && (count($var_parts) === 1 || $var_parts[1][0] !== '$')) {
|
|
$type_in_comments = $var_parts[0];
|
|
|
|
if ($type_in_comments[0] === strtoupper($type_in_comments[0])) {
|
|
$type_in_comments = ClassChecker::getAbsoluteClassFromString($type_in_comments, $this->_namespace, $this->_aliased_classes);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if ($stmt->expr) {
|
|
if ($this->_checkExpression($stmt->expr, $vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
|
|
if ($type_in_comments) {
|
|
$stmt->returnType = Type::parseString($type_in_comments);
|
|
}
|
|
elseif (isset($stmt->expr->returnType)) {
|
|
$stmt->returnType = $stmt->expr->returnType;
|
|
}
|
|
else {
|
|
$stmt->returnType = Type::getMixed();
|
|
}
|
|
}
|
|
else {
|
|
$stmt->returnType = Type::getVoid();
|
|
}
|
|
|
|
if ($this->_source instanceof FunctionChecker) {
|
|
$this->_source->addReturnTypes($stmt->expr ? (string) $stmt->returnType : '', $vars_in_scope, $vars_possibly_in_scope);
|
|
}
|
|
}
|
|
|
|
protected function _checkTernary(PhpParser\Node\Expr\Ternary $stmt, array &$vars_in_scope, array &$vars_possibly_in_scope)
|
|
{
|
|
if ($this->_checkCondition($stmt->cond, $vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
|
|
$if_types = $this->_type_checker->getTypeAssertions($stmt->cond, true);
|
|
|
|
$can_negate_if_types = !($stmt->cond instanceof PhpParser\Node\Expr\BinaryOp\BooleanAnd);
|
|
|
|
if ($stmt->if) {
|
|
$t_if_vars_in_scope = TypeChecker::reconcileKeyedTypes($if_types, $vars_in_scope, $this->_file_name, $stmt->getLine());
|
|
|
|
if ($t_if_vars_in_scope === false) {
|
|
return false;
|
|
}
|
|
|
|
if ($this->_checkExpression($stmt->if, $t_if_vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if ($can_negate_if_types) {
|
|
$negated_if_types = TypeChecker::negateTypes($if_types);
|
|
$t_else_vars_in_scope = TypeChecker::reconcileKeyedTypes($negated_if_types, $vars_in_scope, $this->_file_name, $stmt->getLine());
|
|
|
|
if ($t_else_vars_in_scope === false) {
|
|
return false;
|
|
}
|
|
}
|
|
else {
|
|
$t_else_vars_in_scope = $vars_in_scope;
|
|
}
|
|
|
|
if ($this->_checkExpression($stmt->else, $t_else_vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
protected function _checkBooleanNot(PhpParser\Node\Expr\BooleanNot $stmt, array &$vars_in_scope, array &$vars_possibly_in_scope)
|
|
{
|
|
return $this->_checkExpression($stmt->expr, $vars_in_scope, $vars_possibly_in_scope);
|
|
}
|
|
|
|
protected function _checkEmpty(PhpParser\Node\Expr\Empty_ $stmt, array &$vars_in_scope, array &$vars_possibly_in_scope)
|
|
{
|
|
return $this->_checkExpression($stmt->expr, $vars_in_scope, $vars_possibly_in_scope);
|
|
}
|
|
|
|
protected function _checkThrow(PhpParser\Node\Stmt\Throw_ $stmt, array &$vars_in_scope, array &$vars_possibly_in_scope)
|
|
{
|
|
return $this->_checkExpression($stmt->expr, $vars_in_scope, $vars_possibly_in_scope);
|
|
}
|
|
|
|
protected function _checkSwitch(PhpParser\Node\Stmt\Switch_ $stmt, array &$vars_in_scope, array &$vars_possibly_in_scope, array &$for_vars_possibly_in_scope)
|
|
{
|
|
$type_candidate_var = null;
|
|
|
|
if ($stmt->cond instanceof PhpParser\Node\Expr\FuncCall &&
|
|
$stmt->cond->name instanceof PhpParser\Node\Name &&
|
|
$stmt->cond->name->parts === ['get_class']) {
|
|
|
|
$var = $stmt->cond->args[0]->value;
|
|
|
|
if ($var instanceof PhpParser\Node\Expr\Variable && is_string($var->name)) {
|
|
$type_candidate_var = $var->name;
|
|
}
|
|
}
|
|
|
|
if ($this->_checkCondition($stmt->cond, $vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
|
|
$case_types = [];
|
|
|
|
$new_vars_in_scope = null;
|
|
$new_vars_possibly_in_scope = [];
|
|
|
|
$redefined_vars = null;
|
|
|
|
foreach ($stmt->cases as $case) {
|
|
if ($case->cond) {
|
|
if ($this->_checkCondition($case->cond, $vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
|
|
if ($type_candidate_var && $case->cond instanceof PhpParser\Node\Scalar\String_) {
|
|
$case_types[] = $case->cond->value;
|
|
}
|
|
}
|
|
|
|
$last_stmt = null;
|
|
|
|
if ($case->stmts) {
|
|
$switch_vars = $type_candidate_var && !empty($case_types)
|
|
? [$type_candidate_var => Type::parseString(implode('|', $case_types))]
|
|
: [];
|
|
|
|
$case_vars_in_scope = array_merge($vars_in_scope, $switch_vars);
|
|
$old_case_vars = $case_vars_in_scope;
|
|
$case_vars_possibly_in_scope = array_merge($vars_possibly_in_scope, $switch_vars);
|
|
|
|
$this->check($case->stmts, $case_vars_in_scope, $case_vars_possibly_in_scope);
|
|
|
|
$last_stmt = $case->stmts[count($case->stmts) - 1];
|
|
|
|
// has a return/throw at end
|
|
$has_ending_statments = ScopeChecker::doesLeaveBlock($case->stmts, false, false);
|
|
|
|
if (!$has_ending_statments) {
|
|
$vars = array_diff_key($case_vars_possibly_in_scope, $vars_possibly_in_scope);
|
|
|
|
$has_leaving_statements = ScopeChecker::doesLeaveBlock($case->stmts, true, false);
|
|
|
|
// if we're leaving this block, add vars to outer for loop scope
|
|
if ($has_leaving_statements) {
|
|
$for_vars_possibly_in_scope = array_merge($vars, $for_vars_possibly_in_scope);
|
|
}
|
|
else {
|
|
$case_redefined_vars = [];
|
|
|
|
foreach ($old_case_vars as $case_var => $type) {
|
|
if ($case_vars_in_scope[$case_var] !== $type) {
|
|
$case_redefined_vars[$case_var] = $case_vars_in_scope[$case_var];
|
|
}
|
|
}
|
|
|
|
if ($redefined_vars === null) {
|
|
$redefined_vars = $case_redefined_vars;
|
|
}
|
|
else {
|
|
foreach ($redefined_vars as $redefined_var => $type) {
|
|
if (!isset($case_redefined_vars[$redefined_var])) {
|
|
unset($redefined_vars[$redefined_var]);
|
|
}
|
|
}
|
|
}
|
|
|
|
if ($new_vars_in_scope === null) {
|
|
$new_vars_in_scope = array_diff_key($case_vars_in_scope, $vars_in_scope);
|
|
$new_vars_possibly_in_scope = array_diff_key($case_vars_possibly_in_scope, $vars_possibly_in_scope);
|
|
}
|
|
else {
|
|
foreach ($new_vars_in_scope as $new_var => $type) {
|
|
if (!isset($case_vars_in_scope[$new_var])) {
|
|
unset($new_vars_in_scope[$new_var]);
|
|
}
|
|
}
|
|
|
|
$new_vars_possibly_in_scope = array_merge(
|
|
array_diff_key(
|
|
$case_vars_possibly_in_scope,
|
|
$vars_possibly_in_scope
|
|
),
|
|
$new_vars_possibly_in_scope
|
|
);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if ($type_candidate_var && ($last_stmt instanceof PhpParser\Node\Stmt\Break_ || $last_stmt instanceof PhpParser\Node\Stmt\Return_)) {
|
|
$case_types = [];
|
|
}
|
|
|
|
// only update vars if there is a default
|
|
// if that default has a throw/return/continue, that should be handled above
|
|
if ($case->cond === null) {
|
|
if ($new_vars_in_scope) {
|
|
$vars_in_scope = array_merge($vars_in_scope, $new_vars_in_scope);
|
|
}
|
|
|
|
if ($redefined_vars) {
|
|
$vars_in_scope = array_merge($vars_in_scope, $redefined_vars);
|
|
}
|
|
}
|
|
}
|
|
|
|
$vars_possibly_in_scope = array_merge($vars_possibly_in_scope, $new_vars_possibly_in_scope);
|
|
}
|
|
|
|
protected function _checkFunctionArgumentType(Type\Union $input_type, $method_id, $argument_offset, $file_name, $line_number)
|
|
{
|
|
if (strpos($method_id, '::') !== false) {
|
|
$method_params = ClassMethodChecker::getMethodParams($method_id);
|
|
|
|
if (isset($method_params[$argument_offset])) {
|
|
$param_type = $method_params[$argument_offset]['type'];
|
|
|
|
if (!$param_type) {
|
|
return;
|
|
}
|
|
|
|
if ($param_type->isMixed()) {
|
|
return;
|
|
}
|
|
|
|
if ($input_type->isMixed()) {
|
|
// @todo make this a config
|
|
return;
|
|
}
|
|
|
|
if ($param_type->isNullable() && !$param_type->isNullable()) {
|
|
if (ExceptionHandler::accepts(
|
|
new NullReference(
|
|
'Argument ' . ($argument_offset + 1) . ' of ' . $method_id . ' cannot be null, possibly null value provided',
|
|
$file_name,
|
|
$line_number
|
|
)
|
|
)) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
foreach ($input_type->types as $input_type_part) {
|
|
if ($input_type_part->isNull()) {
|
|
continue;
|
|
}
|
|
|
|
foreach ($param_type->types as $param_type_part) {
|
|
if ($param_type_part->isNull()) {
|
|
continue;
|
|
}
|
|
|
|
if ($input_type_part->value !== $param_type_part->value && !is_subclass_of($input_type_part->value, $param_type_part->value) && !self::isMock($input_type_part->value)) {
|
|
if (is_subclass_of($param_type_part->value, $input_type_part->value)) {
|
|
// @todo handle coercion
|
|
return;
|
|
}
|
|
|
|
if (ExceptionHandler::accepts(
|
|
new InvalidArgument(
|
|
'Argument ' . ($argument_offset + 1) . ' expects ' . $param_type . ', ' . $input_type . ' provided',
|
|
$file_name,
|
|
$line_number
|
|
)
|
|
)) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
protected function _checkFunctionCall(PhpParser\Node\Expr\FuncCall $stmt, array &$vars_in_scope, array &$vars_possibly_in_scope)
|
|
{
|
|
$method = $stmt->name;
|
|
|
|
if ($method instanceof PhpParser\Node\Name) {
|
|
if ($method->parts === ['method_exists']) {
|
|
$this->_check_methods = false;
|
|
|
|
} elseif ($method->parts === ['function_exists']) {
|
|
$this->_check_functions = false;
|
|
|
|
} elseif ($method->parts === ['defined']) {
|
|
$this->_check_consts = false;
|
|
|
|
} elseif ($method->parts === ['extract']) {
|
|
$this->_check_variables = false;
|
|
|
|
} elseif ($method->parts === ['var_dump'] || $method->parts === ['die'] || $method->parts === ['exit']) {
|
|
if (ExceptionHandler::accepts(
|
|
new ForbiddenCode('Unsafe ' . implode('', $method->parts), $this->_file_name, $stmt->getLine())
|
|
)) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
$method_id = null;
|
|
|
|
if ($stmt->name instanceof PhpParser\Node\Name && $this->_check_functions) {
|
|
$method_id = implode('', $stmt->name->parts);
|
|
|
|
if ($this->_absolute_class) {
|
|
//$method_id = $this->_absolute_class . '::' . $method_id;
|
|
}
|
|
|
|
if ($this->_checkFunctionExists($method_id, $stmt) === false) {
|
|
return false;
|
|
}
|
|
|
|
$stmt->returnType = Type::getMixed();
|
|
}
|
|
|
|
foreach ($stmt->args as $i => $arg) {
|
|
if ($arg->value instanceof PhpParser\Node\Expr\Variable) {
|
|
if ($method_id) {
|
|
if ($this->_checkVariable($arg->value, $vars_in_scope, $vars_possibly_in_scope, $method_id, $i) === false) {
|
|
return false;
|
|
}
|
|
} else {
|
|
if ($this->_checkVariable($arg->value, $vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
}
|
|
} else {
|
|
if ($this->_checkExpression($arg->value, $vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
protected function _checkArrayAccess(PhpParser\Node\Expr\ArrayDimFetch $stmt, array &$vars_in_scope, array &$vars_possibly_in_scope)
|
|
{
|
|
if ($this->_checkExpression($stmt->var, $vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
if ($stmt->dim) {
|
|
if ($this->_checkExpression($stmt->dim, $vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
protected function _checkEncapsulatedString(PhpParser\Node\Scalar\Encapsed $stmt, array &$vars_in_scope, array &$vars_possibly_in_scope)
|
|
{
|
|
foreach ($stmt->parts as $part) {
|
|
if ($this->_checkExpression($part, $vars_in_scope, $vars_possibly_in_scope) === false) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
public function registerVariable($var_name, $line_number)
|
|
{
|
|
if (!isset($this->_all_vars[$var_name])) {
|
|
$this->_all_vars[$var_name] = $line_number;
|
|
}
|
|
}
|
|
|
|
public static function _getClassProperties(\ReflectionClass $reflection_class, $absolute_class_name)
|
|
{
|
|
$properties = $reflection_class->getProperties();
|
|
$props_arr = [];
|
|
|
|
foreach ($properties as $reflection_property) {
|
|
if ($reflection_property->isPrivate() || $reflection_property->isStatic()) {
|
|
continue;
|
|
}
|
|
|
|
self::$_existing_properties[$absolute_class_name . '::' . $reflection_property->getName()] = 1;
|
|
}
|
|
|
|
$parent_reflection_class = $reflection_class->getParentClass();
|
|
|
|
if ($parent_reflection_class) {
|
|
self::_getClassProperties($parent_reflection_class, $absolute_class_name);
|
|
}
|
|
}
|
|
|
|
protected static function _propertyExists($property_id)
|
|
{
|
|
if (isset(self::$_existing_properties[$property_id])) {
|
|
return true;
|
|
}
|
|
|
|
$absolute_class = explode('::', $property_id)[0];
|
|
|
|
$reflection_class = new \ReflectionClass($absolute_class);
|
|
|
|
self::_getClassProperties($reflection_class, $absolute_class);
|
|
|
|
return isset(self::$_existing_properties[$property_id]);
|
|
}
|
|
|
|
/**
|
|
* @return false|null
|
|
*/
|
|
public function _checkFunctionExists($method_id, $stmt)
|
|
{
|
|
if (isset(self::$_existing_functions[$method_id])) {
|
|
return;
|
|
}
|
|
|
|
$file_checker = FileChecker::getFileCheckerFromFileName($this->_file_name);
|
|
|
|
if ($file_checker->hasFunction($method_id)) {
|
|
return;
|
|
}
|
|
|
|
if (strpos($method_id, '::') !== false) {
|
|
$method_id = preg_replace('/^[^:]+::/', '', $method_id);
|
|
}
|
|
|
|
try {
|
|
(new \ReflectionFunction($method_id));
|
|
}
|
|
catch (\ReflectionException $e) {
|
|
if (ExceptionHandler::accepts(
|
|
new UndefinedFunction('Function ' . $method_id . ' does not exist', $this->_file_name, $stmt->getLine())
|
|
)) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
self::$_existing_functions[$method_id] = 1;
|
|
}
|
|
|
|
protected static function _staticVarExists($var_id)
|
|
{
|
|
if (isset(self::$_existing_static_vars[$var_id])) {
|
|
return true;
|
|
}
|
|
|
|
$absolute_class = explode('::', $var_id)[0];
|
|
|
|
try {
|
|
$reflection_class = new \ReflectionClass($absolute_class);
|
|
}
|
|
catch (\ReflectionException $e) {
|
|
return false;
|
|
}
|
|
|
|
$static_properties = $reflection_class->getStaticProperties();
|
|
|
|
foreach ($static_properties as $property => $value) {
|
|
self::$_existing_static_vars[$absolute_class . '::$' . $property] = 1;
|
|
}
|
|
|
|
return isset(self::$_existing_static_vars[$var_id]);
|
|
}
|
|
|
|
/**
|
|
* Parse a docblock comment into its parts.
|
|
*
|
|
* Taken from advanced api docmaker
|
|
* Which was taken from https://github.com/facebook/libphutil/blob/master/src/parser/docblock/PhutilDocblockParser.php
|
|
*
|
|
* @return array Array of the main comment and specials
|
|
*/
|
|
public static function parseDocComment($docblock)
|
|
{
|
|
// Strip off comments.
|
|
$docblock = trim($docblock);
|
|
$docblock = preg_replace('@^/\*\*@', '', $docblock);
|
|
$docblock = preg_replace('@\*/$@', '', $docblock);
|
|
$docblock = preg_replace('@^\s*\*@m', '', $docblock);
|
|
|
|
// Normalize multi-line @specials.
|
|
$lines = explode("\n", $docblock);
|
|
$last = false;
|
|
foreach ($lines as $k => $line) {
|
|
if (preg_match('/^\s?@\w/i', $line)) {
|
|
$last = $k;
|
|
} elseif (preg_match('/^\s*$/', $line)) {
|
|
$last = false;
|
|
} elseif ($last !== false) {
|
|
$lines[$last] = rtrim($lines[$last]).' '.trim($line);
|
|
unset($lines[$k]);
|
|
}
|
|
}
|
|
$docblock = implode("\n", $lines);
|
|
|
|
$special = array();
|
|
|
|
// Parse @specials.
|
|
$matches = null;
|
|
$have_specials = preg_match_all('/^\s?@(\w+)\s*([^\n]*)/m', $docblock, $matches, PREG_SET_ORDER);
|
|
if ($have_specials) {
|
|
$docblock = preg_replace('/^\s?@(\w+)\s*([^\n]*)/m', '', $docblock);
|
|
foreach ($matches as $match) {
|
|
list($_, $type, $data) = $match;
|
|
|
|
if (empty($special[$type])) {
|
|
$special[$type] = array();
|
|
}
|
|
|
|
$special[$type][] = $data;
|
|
}
|
|
}
|
|
|
|
$docblock = str_replace("\t", ' ', $docblock);
|
|
|
|
// Smush the whole docblock to the left edge.
|
|
$min_indent = 80;
|
|
$indent = 0;
|
|
foreach (array_filter(explode("\n", $docblock)) as $line) {
|
|
for ($ii = 0; $ii < strlen($line); $ii++) {
|
|
if ($line[$ii] != ' ') {
|
|
break;
|
|
}
|
|
$indent++;
|
|
}
|
|
|
|
$min_indent = min($indent, $min_indent);
|
|
}
|
|
|
|
$docblock = preg_replace('/^' . str_repeat(' ', $min_indent) . '/m', '', $docblock);
|
|
$docblock = rtrim($docblock);
|
|
|
|
// Trim any empty lines off the front, but leave the indent level if there
|
|
// is one.
|
|
$docblock = preg_replace('/^\s*\n/', '', $docblock);
|
|
|
|
return array('description' => $docblock, 'specials' => $special);
|
|
}
|
|
|
|
/**
|
|
* @return string
|
|
*/
|
|
public static function renderDocComment(array $parsed_doc_comment)
|
|
{
|
|
$doc_comment_text = '/**' . PHP_EOL;
|
|
|
|
$description_lines = null;
|
|
|
|
$trimmed_description = trim($parsed_doc_comment['description']);
|
|
|
|
if (!empty($trimmed_description)) {
|
|
$description_lines = explode(PHP_EOL, $parsed_doc_comment['description']);
|
|
|
|
foreach ($description_lines as $line) {
|
|
$doc_comment_text .= ' * ' . $line . PHP_EOL;
|
|
}
|
|
}
|
|
|
|
if ($description_lines && $parsed_doc_comment['specials']) {
|
|
$doc_comment_text .= ' *' . PHP_EOL;
|
|
}
|
|
|
|
if ($parsed_doc_comment['specials']) {
|
|
$type_lengths = array_map('strlen', array_keys($parsed_doc_comment['specials']));
|
|
$type_width = max($type_lengths) + 1;
|
|
|
|
foreach ($parsed_doc_comment['specials'] as $type => $lines) {
|
|
foreach ($lines as $line) {
|
|
$doc_comment_text .= ' * @' . str_pad($type, $type_width) . $line . PHP_EOL;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
|
|
$doc_comment_text .= ' */';
|
|
|
|
return $doc_comment_text;
|
|
}
|
|
|
|
protected function _isPassedByReference($method_id, $argument_offset)
|
|
{
|
|
if (strpos($method_id, '::') !== false) {
|
|
try {
|
|
$method_params = ClassMethodChecker::getMethodParams($method_id);
|
|
|
|
return $argument_offset < count($method_params) && $method_params[$argument_offset]['by_ref'];
|
|
}
|
|
catch (\ReflectionException $e) {
|
|
// we fall through to the functions below
|
|
}
|
|
}
|
|
|
|
$file_checker = FileChecker::getFileCheckerFromFileName($this->_file_name);
|
|
|
|
if ($file_checker->hasFunction($method_id)) {
|
|
return $file_checker->isPassedByReference($method_id, $argument_offset);
|
|
}
|
|
|
|
if (strpos($method_id, '::') !== false) {
|
|
$method_id = preg_replace('/^[^:]+::/', '', $method_id);
|
|
}
|
|
|
|
try {
|
|
$reflection_parameters = (new \ReflectionFunction($method_id))->getParameters();
|
|
|
|
// if value is passed by reference
|
|
return $argument_offset < count($reflection_parameters) && $reflection_parameters[$argument_offset]->isPassedByReference();
|
|
}
|
|
catch (\ReflectionException $e) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
|
|
|
|
public static function customCheckString(callable $function)
|
|
{
|
|
self::$_check_string_fn = $function;
|
|
}
|
|
|
|
/**
|
|
* @return string
|
|
*/
|
|
public static function findEntryPoints($method_id)
|
|
{
|
|
$output = 'Entry points for ' . $method_id;
|
|
if (empty(self::$_method_call_index[$method_id])) {
|
|
list($absolute_class, $method_name) = explode('::', $method_id);
|
|
|
|
$reflection_class = new \ReflectionClass($absolute_class);
|
|
$parent_class = $reflection_class->getParentClass();
|
|
|
|
if ($parent_class) {
|
|
try {
|
|
$parent_class->getMethod($method_name);
|
|
$method_id = $parent_class->getName() . '::' . $method_name;
|
|
return $output . ' - NONE - it extends ' . $method_id . ' though';
|
|
}
|
|
catch (\ReflectionException $e) {
|
|
// do nothing
|
|
}
|
|
}
|
|
|
|
return $output . ' - NONE';
|
|
}
|
|
|
|
$parents = self::$_method_call_index[$method_id];
|
|
$ignore = [$method_id];
|
|
$entry_points = [];
|
|
|
|
while (!empty($parents)) {
|
|
$parent_method_id = array_shift($parents);
|
|
$ignore[] = $parent_method_id;
|
|
$new_parents = self::_findParents($parent_method_id, $ignore);
|
|
|
|
if ($new_parents === null) {
|
|
$entry_points[] = $parent_method_id;
|
|
}
|
|
else {
|
|
$parents = array_merge($parents, $new_parents);
|
|
}
|
|
}
|
|
|
|
$entry_points = array_unique($entry_points);
|
|
|
|
if (count($entry_points) > 20) {
|
|
return $output . PHP_EOL . ' - ' . implode(PHP_EOL . ' - ', array_slice($entry_points, 0, 20)) . ' and more...';
|
|
}
|
|
|
|
return $output . PHP_EOL . ' - ' . implode(PHP_EOL . ' - ', $entry_points);
|
|
}
|
|
|
|
protected static function _findParents($method_id, array $ignore)
|
|
{
|
|
if (empty(self::$_method_call_index[$method_id])) {
|
|
return null;
|
|
}
|
|
|
|
return array_diff(array_unique(self::$_method_call_index[$method_id]), $ignore);
|
|
}
|
|
|
|
protected static function _getPathTo(PhpParser\Node\Expr $stmt, $file_name)
|
|
{
|
|
if ($file_name[0] !== '/') {
|
|
$file_name = getcwd() . '/' . $file_name;
|
|
}
|
|
|
|
if ($stmt instanceof PhpParser\Node\Scalar\String_) {
|
|
return $stmt->value;
|
|
|
|
} elseif ($stmt instanceof PhpParser\Node\Expr\BinaryOp\Concat) {
|
|
$left_string = self::_getPathTo($stmt->left, $file_name);
|
|
$right_string = self::_getPathTo($stmt->right, $file_name);
|
|
|
|
if ($left_string && $right_string) {
|
|
return $left_string . $right_string;
|
|
}
|
|
|
|
} elseif ($stmt instanceof PhpParser\Node\Expr\FuncCall &&
|
|
$stmt->name instanceof PhpParser\Node\Name &&
|
|
$stmt->name->parts === ['dirname']) {
|
|
|
|
if ($stmt->args) {
|
|
$evaled_path = self::_getPathTo($stmt->args[0]->value, $file_name);
|
|
|
|
if (!$evaled_path) {
|
|
return;
|
|
}
|
|
|
|
return dirname($evaled_path);
|
|
}
|
|
|
|
} elseif ($stmt instanceof PhpParser\Node\Expr\ConstFetch && $stmt->name instanceof PhpParser\Node\Name) {
|
|
$const_name = implode('', $stmt->name->parts);
|
|
|
|
if (defined($const_name)) {
|
|
return constant($const_name);
|
|
}
|
|
|
|
} elseif ($stmt instanceof PhpParser\Node\Scalar\MagicConst\Dir) {
|
|
return dirname($file_name);
|
|
|
|
} elseif ($stmt instanceof PhpParser\Node\Scalar\MagicConst\File) {
|
|
return $file_name;
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* @return string
|
|
*/
|
|
protected static function _resolveIncludePath($file_name, $current_directory)
|
|
{
|
|
$paths = PATH_SEPARATOR == ':' ?
|
|
preg_split('#(?<!phar):#', get_include_path()) :
|
|
explode(PATH_SEPARATOR, get_include_path());
|
|
|
|
foreach ($paths as $prefix) {
|
|
$ds = substr($prefix, -1) == DIRECTORY_SEPARATOR ? '' : DIRECTORY_SEPARATOR;
|
|
|
|
if ($prefix === '.') {
|
|
$prefix = $current_directory;
|
|
}
|
|
|
|
$file = $prefix . $ds . $file_name;
|
|
|
|
if (file_exists($file)) {
|
|
return $file;
|
|
}
|
|
}
|
|
}
|
|
|
|
public static function setMockInterfaces(array $classes)
|
|
{
|
|
self::$_mock_interfaces = $classes;
|
|
}
|
|
|
|
public static function isMock($absolute_class)
|
|
{
|
|
return in_array($absolute_class, Config::getInstance()->getMockClasses());
|
|
}
|
|
|
|
/**
|
|
* @return bool
|
|
*/
|
|
protected static function _containsBooleanOr(PhpParser\Node\Expr\BinaryOp $stmt)
|
|
{
|
|
// we only want to discount expressions where either the whole thing is an or
|
|
if ($stmt instanceof PhpParser\Node\Expr\BinaryOp\BooleanOr) {
|
|
return true;
|
|
}
|
|
|
|
// or both sides are ors
|
|
if (($stmt->left instanceof PhpParser\Node\Expr\BinaryOp && $stmt->left instanceof PhpParser\Node\Expr\BinaryOp\BooleanOr) &&
|
|
($stmt->right instanceof PhpParser\Node\Expr\BinaryOp && $stmt->left instanceof PhpParser\Node\Expr\BinaryOp\BooleanOr)) {
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
public function getAliasedClasses()
|
|
{
|
|
return $this->_aliased_classes;
|
|
}
|
|
|
|
public static function getThisAssignments($method_id, $include_constructor = false)
|
|
{
|
|
$absolute_class = explode('::', $method_id)[0];
|
|
|
|
$this_assignments = [];
|
|
|
|
if ($include_constructor && isset(self::$_this_assignments[$absolute_class . '::__construct'])) {
|
|
$this_assignments = self::$_this_assignments[$absolute_class . '::__construct'];
|
|
}
|
|
|
|
if (isset(self::$_this_assignments[$method_id])) {
|
|
$this_assignments = TypeChecker::combineKeyedTypes($this_assignments, self::$_this_assignments[$method_id]);
|
|
}
|
|
|
|
if (isset(self::$_this_calls[$method_id])) {
|
|
foreach (self::$_this_calls[$method_id] as $call) {
|
|
$call_assingments = self::getThisAssignments($absolute_class . '::' . $call);
|
|
$this_assignments = TypeChecker::combineKeyedTypes($this_assignments, $call_assingments);
|
|
}
|
|
}
|
|
|
|
return $this_assignments;
|
|
}
|
|
}
|