TypePHP 编译器
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957 lines
38 KiB
957 lines
38 KiB
<?php
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/**
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* This file is part of TypePHP.
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*
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* Lowers instance property reads, writes, hooks, references, and unset operations.
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*/
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namespace TypePhp\Parser;
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use TypePhp\Type;
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use PhpParser\Node;
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use PhpParser\Node\Expr;
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use PhpParser\NodeAbstract;
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use TypePhp\Entity\PropertyDef;
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use TypePhp\Transform\PropertyHookLowering;
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use TypePhp\Resolver\InstancePropertyFetchTarget;
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use TypePhp\Resolver\PropertyAssignTypeInfo;
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use TypePhp\Resolver\PropertyWriteTarget;
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use TypePhp\Resolver\StaticPropertyFetchResolution;
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use TypePhp\Resolver\StaticPropertyFetchTarget;
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use TypePhp\Generator\Symbol;
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trait PropertyAccessTrait
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{
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protected function emitDynamicPropertyRead(string $object, string $property): string
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{
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return "{$object}.getProperty({$property})";
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}
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protected function emitDynamicPropertyWrite(string $object, string $property, string $value): string
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{
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$scope = $this->class ? $this->getClassEntryPtr($this->getFullClassName()) : 'nullptr';
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return 'typephp_write_property_scoped('
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. $object . ', ' . $property . ', ' . $value . ', ' . $scope . ')';
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}
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protected function emitDynamicPropertyTargetRead(PropertyWriteTarget $target): string
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{
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$this->assertDynamicPropertyTarget($target);
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return $this->emitDynamicPropertyRead($target->getDynamicObjectExpr(), $target->getDynamicPropertyExpr());
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}
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protected function emitDynamicPropertyTargetWrite(PropertyWriteTarget $target, string $value): string
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{
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$this->assertDynamicPropertyTarget($target);
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return $this->emitDynamicPropertyWrite($target->getDynamicObjectExpr(), $target->getDynamicPropertyExpr(), $value);
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}
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protected function emitDynamicPropertyTargetUnset(PropertyWriteTarget $target): string
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{
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$this->assertDynamicPropertyTarget($target);
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return $target->getDynamicObjectExpr() . '.unsetProperty(' . $target->getDynamicPropertyExpr() . ')';
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}
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protected function emitDynamicPropertyTargetRef(PropertyWriteTarget $target): string
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{
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$this->assertDynamicPropertyTarget($target);
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return $target->getDynamicObjectExpr() . '.attrRef(' . $target->getDynamicPropertyExpr() . ')';
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}
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protected function emitDynamicPropertyTargetAppendArray(PropertyWriteTarget $target, string $value): string
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{
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$this->assertDynamicPropertyTarget($target);
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return $this->emitDynamicPropertyAppendArray(
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$target->getDynamicObjectExpr(),
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$target->getDynamicPropertyExpr(),
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$value
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);
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}
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protected function emitDynamicPropertyTargetUpdateArray(PropertyWriteTarget $target, string $dim, string $value): string
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{
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$this->assertDynamicPropertyTarget($target);
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return $this->emitDynamicPropertyUpdateArray(
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$target->getDynamicObjectExpr(),
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$target->getDynamicPropertyExpr(),
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$dim,
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$value
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);
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}
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protected function canEmitDynamicPropertyTarget(?PropertyWriteTarget $target): bool
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{
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return $target !== null && $target->isDynamicObjectProperty();
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}
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protected function emitDynamicPropertyFetchRead(Expr\PropertyFetch $expr, ?PropertyWriteTarget $target = null): string
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{
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if ($this->canEmitDynamicPropertyTarget($target)) {
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return $this->emitDynamicPropertyTargetRead($target);
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}
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return $this->emitDynamicPropertyRead(
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$this->parseIdentifier($expr->var),
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$this->identifierToStr($expr->name, literal: true)
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);
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}
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protected function emitDynamicPropertyFetchWrite(Expr\PropertyFetch $expr, string $value, ?PropertyWriteTarget $target = null): string
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{
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if ($this->canEmitDynamicPropertyTarget($target)) {
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return $this->emitDynamicPropertyTargetWrite($target, $value);
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}
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return $this->emitDynamicPropertyWrite(
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$this->parseIdentifier($expr->var),
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$this->identifierToStr($expr->name, literal: true),
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$value
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);
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}
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protected function getDynamicPropertyFetchObjectExpr(Expr\PropertyFetch $expr, ?PropertyWriteTarget $target = null): string
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{
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if ($this->canEmitDynamicPropertyTarget($target)) {
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return $target->getDynamicObjectExpr();
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}
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return $this->parseIdentifier($expr->var);
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}
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protected function emitDynamicPropertyFetchUnset(Expr\PropertyFetch $expr, ?PropertyWriteTarget $target = null): string
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{
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if ($this->canEmitDynamicPropertyTarget($target)) {
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return $this->emitDynamicPropertyTargetUnset($target);
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}
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return $this->parseIdentifier($expr->var) . '.unsetProperty(' . $this->identifierToStr($expr->name, literal: true) . ')';
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}
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protected function emitDynamicPropertyFetchAppendArray(Expr\PropertyFetch $expr, string $value, ?PropertyWriteTarget $target = null): string
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{
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if ($this->canEmitDynamicPropertyTarget($target)) {
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return $this->emitDynamicPropertyTargetAppendArray($target, $value);
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}
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return $this->emitDynamicPropertyAppendArray(
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$this->parseIdentifier($expr->var),
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$this->identifierToStr($expr->name, literal: true),
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$value
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);
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}
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protected function emitDynamicPropertyFetchUpdateArray(Expr\PropertyFetch $expr, string $dim, string $value, ?PropertyWriteTarget $target = null): string
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{
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if ($this->canEmitDynamicPropertyTarget($target)) {
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return $this->emitDynamicPropertyTargetUpdateArray($target, $dim, $value);
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}
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return $this->emitDynamicPropertyUpdateArray(
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$this->parseIdentifier($expr->var),
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$this->identifierToStr($expr->name, literal: true),
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$dim,
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$value
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);
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}
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protected function emitDynamicPropertyAppendArray(string $object, string $property, string $value): string
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{
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return "{$object}.attr({$property}, true).newItem() = {$value}";
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}
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protected function emitDynamicPropertyUpdateArray(string $object, string $property, string $dim, string $value): string
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{
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return "{$object}.attr({$property}, true).item({$dim}, true) = {$value}";
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}
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protected function assertDynamicPropertyTarget(PropertyWriteTarget $target): void
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{
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if (!$target->isDynamicObjectProperty()) {
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$this->fatalError($target->node, 'Internal error: property write target is not a dynamic object property');
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}
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}
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protected function emitDynamicPropertyFetchRef(Expr\PropertyFetch $expr, NodeAbstract $errorNode): string
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{
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$target = $this->preparePropertyWriteTarget($expr);
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if ($this->canEmitDynamicPropertyTarget($target)) {
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$objectExpr = $target->getDynamicObjectExpr();
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if (!$this->hasVar($objectExpr)) {
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$this->fatalError($errorNode, 'Undefined variable `$' . $objectExpr . '`');
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}
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return $this->emitDynamicPropertyTargetRef($target);
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}
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if (!$this->isVarExpr($expr->var)) {
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return $this->parseExpr($expr->var) . '.attrRef(' . $this->identifierToStr($expr->name) . ')';
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}
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$objectExpr = $this->parseIdentifier($expr->var);
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if (!$this->hasVar($objectExpr)) {
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$this->fatalError($errorNode, 'Undefined variable `$' . $objectExpr . '`');
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}
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return $objectExpr . '.attrRef(' . $this->identifierToStr($expr->name) . ')';
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}
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protected function emitStaticPropertyFetchRef(Expr\StaticPropertyFetch $expr, NodeAbstract $errorNode): string
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{
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$resolution = $this->resolveNativeStaticPropertyFetch($expr);
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if ($this->isIdExpr($expr->name)) {
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$this->assertPropertySetVisibility($expr);
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}
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if ($resolution !== null) {
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$property = $this->identifierToStr($expr->name, literal: true);
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if ($resolution->class !== null) {
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$classPtr = $this->getClassEntryPtr($resolution->class);
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return Symbol::getStaticPropertyRef() . '(' . $classPtr . ', ' . $property . ')';
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}
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if ($resolution->expression !== null) {
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// Dynamic target, e.g. `self` resolved through the called class inside a trait.
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return Symbol::getStaticPropertyRef() . '(' . Symbol::getCalledCe() . ', ' . $property . ')';
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}
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}
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// Fully dynamic path: `static` keyword, dynamic class name, or dynamic property name.
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return $this->parseDynamicStaticPropertyFetch($expr, true);
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}
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protected function resolveNativeStaticPropertyFetch(Expr\StaticPropertyFetch $expr): ?StaticPropertyFetchResolution
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{
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$target = $this->resolveStaticPropertyFetchTarget($expr);
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if ($target === null) {
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return null;
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}
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if ($target->isDynamic()) {
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return new StaticPropertyFetchResolution(null, $target->dynamicExpression, false);
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}
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$class = $target->class;
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if ($class === null) {
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return null;
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}
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$result = $this->resolveNativeStaticProperty($expr, $target->property, $class);
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if ($result !== null) {
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$expression = $this->applyNativePropertyAccessResult($expr, $result);
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return new StaticPropertyFetchResolution($class, $expression, true);
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}
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return null;
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}
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private function resolveStaticPropertyFetchTarget(Expr\StaticPropertyFetch $expr): ?StaticPropertyFetchTarget
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{
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if (!$this->isNameExpr($expr->class) or !$this->isIdExpr($expr->name)) {
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return null;
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}
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$class = $this->parseIdentifier($expr->class);
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$propertyName = $this->parseIdentifier($expr->name);
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if ($class === 'static') {
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return null;
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}
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if ($class === 'self') {
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if ($this->classDef->trait) {
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$expression = Symbol::getStaticProperty() . '(' . Symbol::getCalledCe() . ', ' . $this->getLiteralString($propertyName) . ')';
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return new StaticPropertyFetchTarget($propertyName, null, $expression);
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}
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return new StaticPropertyFetchTarget($propertyName, $this->getFullClassName(), null);
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}
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if ($class === 'parent') {
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if (!$this->classDef->extends) {
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$this->fatalError($expr, 'Cannot access parent:: when current class does not extend any class');
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}
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return new StaticPropertyFetchTarget($propertyName, $this->classDef->extends, null);
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}
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return new StaticPropertyFetchTarget($propertyName, $this->getNamespacedClassName($class), null);
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}
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protected function parseNativeStaticPropertyFetch(Expr\StaticPropertyFetch $expr): ?string
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{
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$resolution = $this->resolveNativeStaticPropertyFetch($expr);
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if ($resolution !== null) {
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$nativeProp = $resolution->expression;
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$def = $this->getNativePropertyDef($expr);
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$class = $resolution->class;
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if ($this->nativeTypes && $def && $class !== null) {
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$this->setNativePropertyValueSource($expr, self::NATIVE_PROPERTY_VALUE_VAR);
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return $this->emitNativeStaticPropertyTypedFetch($expr, $class, $def, $nativeProp);
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}
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if ($resolution->nativeProperty && $class !== null) {
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$classPtr = $this->getClassEntryPtr($class);
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$this->setNativePropertyValueSource($expr, self::NATIVE_PROPERTY_VALUE_DYNAMIC);
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return Symbol::getStaticProperty() . '(' . $classPtr . ', ' . $nativeProp . ')';
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} else {
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$this->setNativePropertyValueSource($expr, self::NATIVE_PROPERTY_VALUE_DYNAMIC);
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return $nativeProp;
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}
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}
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return null;
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}
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private function emitNativeStaticPropertyTypedFetch(
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Expr\StaticPropertyFetch $expr,
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string $class,
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PropertyDef $def,
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string $nativeProp,
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): string {
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$info = $this->getHoistedObjectPropInfo($def->type);
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$propName = $this->parseIdentifier($expr->name);
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$refVar = '_static_' . str_replace('\\', '_', $class) . '_' . $propName;
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$this->registerStaticPropertyRef($refVar, $class, $nativeProp, $info);
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if ($info['kind'] === 'zval') {
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$helper = $def->type === Type::FLOAT ? 'typephp_static_float_ref' : 'typephp_static_int_ref';
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return $helper . '(' . $refVar . ')';
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}
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return $refVar;
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}
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private function registerStaticPropertyRef(string $refVar, string $class, string $offsetExpr, array $info): void
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{
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if (isset($this->context->staticPropRefs[$refVar])) {
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return;
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}
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$this->context->staticPropRefs[$refVar] = [
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'type' => $info['type'],
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'classPtr' => $this->getClassEntryPtr($class),
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'offsetExpr' => $offsetExpr,
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'kind' => $info['kind'],
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];
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}
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protected function parseStaticPropertyFetch(Expr\StaticPropertyFetch $expr): string
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{
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$native = $this->parseNativeStaticPropertyFetch($expr);
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if ($native !== null) {
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return $native;
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}
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return $this->parseDynamicStaticPropertyFetch($expr);
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}
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/**
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* Resolve a static-property target through the runtime path.
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*
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* PHP permits the class operand to be either a class-name string or an
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* object. Materialising both operands preserves PHP's left-to-right
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* evaluation order and avoids ambiguous C++ overload resolution for Var.
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*/
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private function parseDynamicStaticPropertyFetch(Expr\StaticPropertyFetch $expr, bool $reference = false): string
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{
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$classValue = $this->getDynamicStaticClassValue($expr->class);
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$propertyValue = $this->identifierToStr($expr->name, literal: true);
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$classVar = $this->addTmpVar(Type::VAR);
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$propertyVar = $this->addTmpVar(Type::VAR);
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$this->context->beforeStmtLines[] = $classVar . ' = ' . $classValue . ';';
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$this->context->beforeStmtLines[] = $propertyVar . ' = ' . $propertyValue . ';';
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$className = '(' . $classVar . '.isObject() ? php::fn::get_class(' . $classVar . ') : php::toString(' . $classVar . '))';
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$helper = $reference ? Symbol::getStaticPropertyRef() : Symbol::getStaticProperty();
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return $helper . '(' . $className . ', php::toString(' . $propertyVar . '))';
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}
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private function getDynamicStaticClassValue(NodeAbstract $class): string
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{
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if (!$this->isNameExpr($class)) {
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return $this->parseExprAsValue($class);
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}
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$name = $this->parseIdentifier($class);
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if ($name === 'self') {
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return $this->getLiteralString($this->getFullClassName());
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}
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if ($name === 'parent') {
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if (!$this->classDef || !$this->classDef->extends) {
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$this->fatalError($class, 'Cannot access parent:: when current class does not extend any class');
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}
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return $this->getLiteralString($this->classDef->extends);
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}
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if ($name === 'static') {
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if (!$this->methodDef) {
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$this->fatalError($class, "The 'static' keyword can only be used as the class name in class methods");
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}
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return Symbol::getCalledClass();
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}
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return $this->getLiteralString($this->getNamespacedClassName($name));
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}
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protected function getFixedObjectPropDefaultValue(PropertyDef $def): ?string
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{
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return (new PropertyAssignTypeInfo())->getFixedDefaultValue($def);
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}
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protected function isFixedObjectProp(PropertyDef $def): bool
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{
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return (new PropertyAssignTypeInfo())->isFixed($def);
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}
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protected function assertCanAssignObjectProp(Expr\PropertyFetch $left, Expr $right): void
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{
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$this->assertCanAssignObjectProperty($left, $right, 'object property');
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}
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protected function assertCanAssignStaticProp(Expr\StaticPropertyFetch $left, Expr $right): void
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{
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$this->assertCanAssignObjectProperty($left, $right, 'static property');
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}
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protected function preparePropertyWriteTarget(NodeAbstract $left): ?PropertyWriteTarget
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{
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if ($left instanceof Expr\PropertyFetch) {
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$objectExpr = null;
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$propertyExpr = null;
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if (!$this->isNativePropertyAccess($left) && $this->isVarExpr($left->var)) {
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$objectExpr = $this->parseIdentifier($left->var);
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$propertyExpr = $this->identifierToStr($left->name, literal: true);
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}
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if ($this->isIdExpr($left->name)) {
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$this->getPropertyIdentifier($left, $left->var, $left->name);
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$this->assertPropertySetVisibility($left);
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}
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return new PropertyWriteTarget($left, 'object property', $objectExpr, $propertyExpr);
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}
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if ($left instanceof Expr\StaticPropertyFetch) {
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if ($this->isIdExpr($left->name)) {
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$this->resolveNativeStaticPropertyFetch($left);
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$this->assertPropertySetVisibility($left);
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}
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return new PropertyWriteTarget($left, 'static property');
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}
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return null;
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}
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private function assertPropertySetVisibility(NodeAbstract $property): void
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{
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if ($this->isPropertyHookBackingAccess($property)) {
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return;
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}
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$access = $this->getNativePropertyAccess($property);
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if ($access === null) {
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return;
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}
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$def = $access->getPropertyDef();
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$declaringClass = $access->resolution->declaringClass;
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$scope = $this->class ? $this->getFullClassName() : '';
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$propertyName = $this->parseIdentifier($property->name);
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if ($def->isPrivateSet() && !$this->isSameClassName($scope, $declaringClass)) {
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$this->fatalError($property, "Cannot modify private(set) property `{$declaringClass}::\${$propertyName}`");
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}
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if ($def->isProtectedSet() && !$this->canAccessProtectedProperty($scope, $declaringClass)) {
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$this->fatalError($property, "Cannot modify protected(set) property `{$declaringClass}::\${$propertyName}`");
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}
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}
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protected function assertCanAssignPropertyWrite(PropertyWriteTarget $target, Expr $right): void
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{
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$this->assertCanAssignObjectProperty($target->node, $right, $target->label);
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}
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protected function wrapPropertyWriteTypeCheck(PropertyWriteTarget $target, Expr $right, string $rightExpr): string
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{
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return $this->wrapObjectPropertyAssignTypeCheck($target->node, $right, $rightExpr);
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}
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private function assertCanAssignObjectProperty(NodeAbstract $left, Expr $right, string $label): void
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{
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$def = $this->getNativePropertyDef($left);
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if (!$def) {
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return;
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}
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$propName = $this->parseIdentifier($left->name);
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if ($this->isNull($right)) {
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// Untyped properties retain normal PHP mixed semantics: assigning
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// null is valid. Only an explicitly typed non-nullable property
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// can be rejected at compile time.
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if ($def->type !== Type::VAR && !$def->nullable) {
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$typeStr = $this->getObjectPropertyTypeCheckTypeString($def);
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$this->fatalError(
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$left,
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"Cannot assign null to {$label} `{$propName}` of type `{$typeStr}`"
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);
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}
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return;
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}
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$rightType = $this->detectTypeOfExpr($right);
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if ($this->isFixedObjectProp($def) && $rightType !== Type::VAR) {
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if (!$this->canAssignStaticTypeToObjectProperty($def, $rightType)) {
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$this->fatalError(
|
|
$left,
|
|
'Cannot assign ' . $this->getPropertyAssignmentTypeName($rightType)
|
|
. ' to property ' . $this->getObjectPropertyTypeCheckDisplayName($left)
|
|
. ' of type ' . $this->getObjectPropertyTypeCheckTypeString($def)
|
|
);
|
|
}
|
|
return;
|
|
}
|
|
|
|
if ($def->type !== Type::OBJECT) {
|
|
return;
|
|
}
|
|
|
|
if ($rightType !== Type::VAR && $rightType !== Type::OBJECT) {
|
|
$this->fatalError(
|
|
$left,
|
|
"Cannot assign value of type `{$rightType}` to {$label} `{$propName}` of type `{$def->type}`"
|
|
);
|
|
}
|
|
|
|
if ($def->class === '' or $this->isAbstractClass($def->class) or $this->isInterface($def->class) or !$this->hasClass($def->class)) {
|
|
// 属性 declared class 若是接口、抽象类或动态类，当前属性布局优化无法静态确认最终对象类型。
|
|
// 不在这里 fatal；后续 wrapObjectPropertyAssignTypeCheck() 会在需要时插入运行时检查。
|
|
return;
|
|
}
|
|
|
|
$rightClass = $this->detectClassOfExpr($right);
|
|
// TODO 静态编译阶段无法获得准确的类型，需要在运行时检查
|
|
if ($rightClass === '') {
|
|
return;
|
|
}
|
|
if (!$this->isObjectClassStaticallyAssignableTo($rightClass, $def->class)) {
|
|
$this->fatalError(
|
|
$left,
|
|
"Cannot assign object of class `{$rightClass}` to {$label} `{$propName}` of class `{$def->class}`"
|
|
);
|
|
}
|
|
}
|
|
|
|
protected function wrapObjectPropertyAssignTypeCheck(NodeAbstract $left, Expr $right, string $rightExpr): string
|
|
{
|
|
$def = $this->getNativePropertyDef($left);
|
|
if (!$def) {
|
|
return $rightExpr;
|
|
}
|
|
|
|
$typeCheck = $this->getObjectPropertyAssignTypeCheck($def);
|
|
if (empty($typeCheck)) {
|
|
return $rightExpr;
|
|
}
|
|
|
|
$rightType = $this->detectTypeOfExpr($right);
|
|
$compositeRelation = null;
|
|
if (!empty($def->typeCheck)) {
|
|
$compositeRelation = $this->checkCompositeTypeAssignment(
|
|
$left,
|
|
$def->typeCheck,
|
|
$def->typeStr,
|
|
$right,
|
|
'property assignment'
|
|
);
|
|
}
|
|
if ($compositeRelation === self::COMPOSITE_TYPE_MATCH && $rightType !== Type::VAR) {
|
|
// A statically known member of the composite type needs no
|
|
// Variant runtime guard on this property write.
|
|
return $rightExpr;
|
|
}
|
|
|
|
if ($rightType !== Type::VAR && $this->canAssignStaticTypeToObjectProperty($def, $rightType)) {
|
|
return $rightExpr;
|
|
}
|
|
if ($rightType === Type::VAR && ($helper = $this->getNativeScalarPropertyTypeCheckHelper($def)) !== null) {
|
|
return $helper . '(' . $rightExpr . ', ' . $this->genCharPtr($this->getObjectPropertyTypeCheckDisplayName($left)) . ')';
|
|
}
|
|
|
|
$rightClass = $this->detectClassOfExpr($right);
|
|
if ($rightClass !== '' && $compositeRelation === null) {
|
|
return $rightExpr;
|
|
}
|
|
|
|
$tmpVar = $this->addTmpVar(Type::VAR);
|
|
$conditions = [];
|
|
foreach ($typeCheck as $entry) {
|
|
$cond = $this->genSingleTypeCondition($tmpVar, $entry);
|
|
if ($cond !== '') {
|
|
$conditions[] = $cond;
|
|
}
|
|
}
|
|
if (empty($conditions)) {
|
|
return $rightExpr;
|
|
}
|
|
|
|
$propDisplay = $this->getObjectPropertyTypeCheckDisplayName($left);
|
|
$typeStr = $this->getObjectPropertyTypeCheckTypeString($def);
|
|
if ($this->usesPhpStylePropertyAssignTypeError($def)) {
|
|
$msgExpr = 'php::concat({php::Str("Cannot assign "), ' . $tmpVar . '.typeStr(), php::Str(" to property "), '
|
|
. 'php::Str(' . $this->genCharPtr($propDisplay, true) . '), php::Str(" of type "), '
|
|
. 'php::Str(' . $this->genCharPtr($typeStr, true) . ')})';
|
|
} else {
|
|
$msgExpr = 'php::concat(php::concat(php::Str(' . $this->genCharPtr($propDisplay, true) . ' " must be of type " '
|
|
. $this->genCharPtr($typeStr, true) . ' ", "), ' . $tmpVar . '.typeStr()), php::Str(" given"))';
|
|
}
|
|
|
|
$coercion = $this->compositeTypeNeedsIntToFloatCoercion($typeCheck)
|
|
? 'if (' . $tmpVar . '.isInt()) { ' . $tmpVar . ' = php::toFloat(' . $tmpVar . '); } '
|
|
: '';
|
|
|
|
return '([&]() -> ' . Type::VAR . ' { '
|
|
. $tmpVar . ' = ' . $rightExpr . '; '
|
|
. $coercion
|
|
. 'if (UNEXPECTED(!(' . implode(' || ', $conditions) . '))) { '
|
|
. 'php::throwException(zend_ce_type_error, (' . $msgExpr . ').toCString()); '
|
|
. '} '
|
|
. 'return ' . $tmpVar . '; '
|
|
. '}())';
|
|
}
|
|
|
|
private function getObjectPropertyAssignTypeCheck(PropertyDef $def): array
|
|
{
|
|
return (new PropertyAssignTypeInfo())->getRuntimeTypeCheck($def);
|
|
}
|
|
|
|
private function getObjectPropertyTypeCheckDisplayName(NodeAbstract $left): string
|
|
{
|
|
$propName = $this->parseIdentifier($left->name);
|
|
$classDef = $this->getNativePropertyClassDef($left);
|
|
if ($classDef) {
|
|
$class = $classDef->getNamespacedName(false);
|
|
return $class . '::$' . $propName;
|
|
}
|
|
|
|
if ($left instanceof Expr\StaticPropertyFetch) {
|
|
return $this->identifierToStr($left->class, literal: true) . '::$' . $propName;
|
|
}
|
|
|
|
return '$' . $propName;
|
|
}
|
|
|
|
private function getObjectPropertyTypeCheckTypeString(PropertyDef $def): string
|
|
{
|
|
return (new PropertyAssignTypeInfo())->getTypeString($def);
|
|
}
|
|
|
|
private function usesPhpStylePropertyAssignTypeError(PropertyDef $def): bool
|
|
{
|
|
return empty($def->typeCheck) && $def->class === '' && in_array($def->type, [
|
|
Type::INT,
|
|
Type::FLOAT,
|
|
Type::BOOL,
|
|
Type::STR,
|
|
Type::ARRAY,
|
|
], true);
|
|
}
|
|
|
|
protected function getNativeScalarPropertyTypeCheckHelper(PropertyDef $def): ?string
|
|
{
|
|
if (!empty($def->typeCheck) || $def->class !== '' || $def->nullable) {
|
|
return null;
|
|
}
|
|
|
|
return match ($def->type) {
|
|
Type::INT => 'php::toIntExact',
|
|
Type::FLOAT => 'php::toFloatExact',
|
|
Type::BOOL => 'php::toBoolExact',
|
|
default => null,
|
|
};
|
|
}
|
|
|
|
protected function canAssignStaticTypeToObjectProperty(PropertyDef $def, string $rightType): bool
|
|
{
|
|
return match ($def->type) {
|
|
Type::FLOAT => $rightType === Type::FLOAT || $rightType === Type::INT,
|
|
default => $rightType === $def->type,
|
|
};
|
|
}
|
|
|
|
protected function getPropertyAssignmentTypeName(string $type): string
|
|
{
|
|
return match ($type) {
|
|
Type::INT => 'int',
|
|
Type::FLOAT => 'float',
|
|
Type::BOOL => 'bool',
|
|
Type::STR => 'string',
|
|
Type::ARRAY => 'array',
|
|
Type::OBJECT => 'object',
|
|
default => 'value',
|
|
};
|
|
}
|
|
|
|
protected function parseUnset(Node\Stmt\Unset_ $node): string
|
|
{
|
|
$vars = $node->vars;
|
|
$lines = [];
|
|
foreach ($vars as $var) {
|
|
$this->assertNotNullsafeWriteContext($var);
|
|
if ($this->isArrayDimFetch($var)) {
|
|
if ($var->dim === null) {
|
|
$this->fatalError($var, 'Cannot use [] for array unset');
|
|
}
|
|
$array = $this->parseIdentifier($var->var);
|
|
if (($this->isStdMap($array) or $this->isStdOrderedMap($array))
|
|
and !empty($this->context->stdContainers[$array]['locking'])) {
|
|
$this->fatalError($var, 'Cannot delete element in std container in foreach loop');
|
|
}
|
|
$dim = $this->parseIdentifier($var->dim);
|
|
if ($this->isStdContainer($array)) {
|
|
$lines[] = $array . '_ref.offsetUnset(' . $dim . ');';
|
|
} else {
|
|
$lines[] = $array . '.offsetUnset(' . $dim . ');';
|
|
}
|
|
} elseif ($this->isPropertyFetch($var)) {
|
|
$propertyWriteTarget = $this->preparePropertyWriteTarget($var);
|
|
$object = $this->getDynamicPropertyFetchObjectExpr($var, $propertyWriteTarget);
|
|
$restoreDefault = null;
|
|
if ($this->isIdExpr($var->name)) {
|
|
$propertyId = $this->getPropertyIdentifier($var, $var->var, $var->name);
|
|
$def = $this->getNativePropertyDef($var);
|
|
if ($def) {
|
|
// Object typed properties are backed by Zend object
|
|
// properties, so PHP can represent their uninitialized
|
|
// state after unset(). Keep that behavior instead of
|
|
// restoring a fixed default value.
|
|
if ($this->isFixedObjectProp($def) && $def->type !== Type::OBJECT) {
|
|
$restoreDefault = $this->getFixedObjectPropDefaultValue($def);
|
|
if ($restoreDefault === null) {
|
|
$this->fatalError($var, "Cannot unset object property `{$this->parseIdentifier($var->name)}` of fixed type `{$def->type}` without default value");
|
|
}
|
|
$this->warning($var, "Object property `{$this->parseIdentifier($var->name)}` of fixed type cannot be unset; restoring its default value");
|
|
$propName = $this->parseIdentifier($var->name);
|
|
$propVar = $this->getObjectPropVarName($object, $propName);
|
|
if ($this->hasObjectPropVar($propVar)) {
|
|
$lines[] = $propVar . ' = ' . $restoreDefault . ';';
|
|
} else {
|
|
$lines[] = $object . '.attr(' . $propertyId . ', true) = ' . $restoreDefault . ';';
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if ($restoreDefault === null) {
|
|
$lines[] = $this->emitDynamicPropertyFetchUnset($var, $propertyWriteTarget) . ';';
|
|
}
|
|
} elseif ($this->isStaticPropertyFetch($var)) {
|
|
$this->fatalError($var, 'Attempt to unset static property ' . $this->parseIdentifier($var->class) . '::$' . $this->parseIdentifier($var->name));
|
|
} elseif ($this->isVarExpr($var)) {
|
|
$name = $this->parseIdentifier($var);
|
|
if (!$this->hasVar($name)) {
|
|
$this->errorUndefinedVariable($var);
|
|
}
|
|
$type = $this->getVarType($name);
|
|
if ($this->isNativeType($type)) {
|
|
$this->warning($var, "Variable of native type `\${$name}` cannot be unset");
|
|
} else {
|
|
$lines[] = "{$name}.unset();";
|
|
}
|
|
} else {
|
|
$this->fatalError($var, "Unsupported unset type `{$var->getType()}`");
|
|
}
|
|
}
|
|
|
|
return implode(PHP_EOL . $this->getIndent(), $lines);
|
|
}
|
|
|
|
protected function getPropertyIdentifier(Expr\PropertyFetch $expr, NodeAbstract $object, NodeAbstract $property): ?string
|
|
{
|
|
$target = $this->resolveInstancePropertyFetchTarget($object, $property);
|
|
if ($target !== null) {
|
|
$result = $this->resolveNativeInstanceProperty($expr, $target->property, $target->class);
|
|
if ($result !== null) {
|
|
return $this->applyNativePropertyAccessResult($expr, $result);
|
|
}
|
|
}
|
|
|
|
return $this->identifierToStr($property, literal: true);
|
|
}
|
|
|
|
private function resolveInstancePropertyFetchTarget(
|
|
NodeAbstract $object,
|
|
NodeAbstract $property,
|
|
): ?InstancePropertyFetchTarget {
|
|
if (!$this->isVarExpr($object) or !$this->isIdExpr($property)) {
|
|
return null;
|
|
}
|
|
|
|
$objectName = $this->parseIdentifier($object);
|
|
$propertyName = $this->parseIdentifier($property);
|
|
if ($objectName === 'this_') {
|
|
if ($this->classDef->trait) {
|
|
return null;
|
|
}
|
|
return new InstancePropertyFetchTarget($propertyName, $this->getFullClassName());
|
|
}
|
|
if ($this->isTypedObject($objectName)) {
|
|
return new InstancePropertyFetchTarget($propertyName, $this->getObjectType($objectName));
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
protected function parsePropertyFetchRead(Expr\PropertyFetch $expr): string
|
|
{
|
|
return $this->parsePropertyFetchWithUpdate($expr, false);
|
|
}
|
|
|
|
protected function parsePropertyFetchUpdate(Expr\PropertyFetch $expr): string
|
|
{
|
|
return $this->parsePropertyFetchWithUpdate($expr, true);
|
|
}
|
|
|
|
protected function parsePropertyFetchWithUpdate(Expr\PropertyFetch $expr, bool $update): string
|
|
{
|
|
return $this->parseNodeWithUpdateAttribute(
|
|
$expr,
|
|
self::ATTR_PROPERTY_FETCH_UPDATE,
|
|
$update,
|
|
fn() => $this->parsePropertyFetch($expr)
|
|
);
|
|
}
|
|
|
|
protected function isPropertyFetchUpdate(Expr\PropertyFetch|Expr\NullsafePropertyFetch $expr): bool
|
|
{
|
|
return $expr->getAttribute(self::ATTR_PROPERTY_FETCH_UPDATE, false) === true;
|
|
}
|
|
|
|
protected function parsePropertyFetch(Expr\PropertyFetch $expr): string
|
|
{
|
|
if ($this->containsNullsafeChain($expr->var)) {
|
|
return $this->parseNullsafeExpr($expr);
|
|
}
|
|
|
|
$object = $expr->var;
|
|
$property = $expr->name;
|
|
$id = $this->getPropertyIdentifier($expr, $object, $property);
|
|
$hook = $this->getPropertyHookGetter($expr);
|
|
if ($hook !== null) {
|
|
return $this->emitPropertyHookGetterCall($expr, $hook);
|
|
}
|
|
|
|
$update = $this->isPropertyFetchUpdate($expr);
|
|
$objectName = $update ? $this->parseWritableIdentifier($object) : $this->parseIdentifier($object);
|
|
if ($this->isVarExpr($object) and !$this->hasVar($objectName)) {
|
|
$this->errorUndefinedVariable($object);
|
|
}
|
|
$objectVar = $objectName;
|
|
$getProperty = $objectVar . '.attr(' . $id . ', ' . $this->escapeBool($update) . ')';
|
|
$def = $this->getNativePropertyDef($expr);
|
|
if ($def and $this->nativeTypes) {
|
|
$propName = $this->parseIdentifier($property);
|
|
$typedFetch = $this->emitNativeInstancePropertyTypedFetch(
|
|
$expr,
|
|
$objectVar,
|
|
$propName,
|
|
$id,
|
|
$def,
|
|
$getProperty,
|
|
);
|
|
if ($typedFetch !== null) {
|
|
return $typedFetch;
|
|
}
|
|
}
|
|
if ($def) {
|
|
$this->setNativePropertyValueSource($expr, self::NATIVE_PROPERTY_VALUE_DYNAMIC);
|
|
}
|
|
return $getProperty;
|
|
}
|
|
|
|
protected function isPropertyHookBackingAccess(NodeAbstract $expr): bool
|
|
{
|
|
if ($expr->getAttribute(PropertyHookLowering::BACKING_ACCESS_ATTRIBUTE, false) === true) {
|
|
return true;
|
|
}
|
|
if (!$expr instanceof Expr\PropertyFetch
|
|
|| !$expr->var instanceof Expr\Variable
|
|
|| $expr->var->name !== 'this'
|
|
|| !$expr->name instanceof Node\Identifier) {
|
|
return false;
|
|
}
|
|
|
|
$property = $expr->name->toString();
|
|
return $this->method === PropertyHookLowering::getterName($property)
|
|
|| $this->method === PropertyHookLowering::setterName($property);
|
|
}
|
|
|
|
protected function getPropertyHookGetter(NodeAbstract $expr): ?string
|
|
{
|
|
if ($this->isPropertyHookBackingAccess($expr)) {
|
|
return null;
|
|
}
|
|
return $this->getNativePropertyDef($expr)?->getter;
|
|
}
|
|
|
|
protected function getPropertyHookSetter(NodeAbstract $expr): ?string
|
|
{
|
|
if ($this->isPropertyHookBackingAccess($expr)) {
|
|
return null;
|
|
}
|
|
return $this->getNativePropertyDef($expr)?->setter;
|
|
}
|
|
|
|
protected function isReadOnlyPropertyHook(NodeAbstract $expr): bool
|
|
{
|
|
if ($this->isPropertyHookBackingAccess($expr)) {
|
|
return false;
|
|
}
|
|
$def = $this->getNativePropertyDef($expr);
|
|
return $def !== null && $def->getter !== null && $def->setter === null;
|
|
}
|
|
|
|
protected function emitPropertyHookGetterCall(Expr\PropertyFetch $expr, string $getter): string
|
|
{
|
|
$call = new Expr\MethodCall($expr->var, $getter, [], $expr->getAttributes());
|
|
return $this->parseMethodCall($call);
|
|
}
|
|
|
|
protected function emitPropertyHookSetterCall(Expr\PropertyFetch $expr, string $setter, Expr $value): string
|
|
{
|
|
$call = new Expr\MethodCall($expr->var, $setter, [new Node\Arg($value)], $expr->getAttributes());
|
|
return $this->parseMethodCall($call);
|
|
}
|
|
|
|
private function emitNativeInstancePropertyTypedFetch(
|
|
Expr\PropertyFetch $expr,
|
|
string $objectVar,
|
|
string $propName,
|
|
string $propertyId,
|
|
PropertyDef $def,
|
|
string $getter,
|
|
): ?string {
|
|
if ($this->isPropertyFetchUpdate($expr) && !in_array($def->type, [Type::INT, Type::FLOAT], true)) {
|
|
return null;
|
|
}
|
|
|
|
if ($def->type === Type::BOOL) {
|
|
$this->setNativePropertyValueSource($expr, self::NATIVE_PROPERTY_VALUE_DYNAMIC);
|
|
return $this->convertBoolExpr($getter);
|
|
}
|
|
|
|
$propVar = $this->getObjectPropVarName($objectVar, $propName);
|
|
if ($objectVar === 'this_') {
|
|
if (!$this->canHoistObjectProp($objectVar, $propName, $def)) {
|
|
return null;
|
|
}
|
|
$this->registerHoistedObjectPropVar($propVar, $def->type, $getter);
|
|
$this->setNativePropertyVar($expr, $propVar);
|
|
$this->setNativePropertyValueSource($expr, self::NATIVE_PROPERTY_VALUE_VAR);
|
|
return $propVar;
|
|
}
|
|
|
|
if (!$this->canHoistStableObjectProp($objectVar, $propName, $def)) {
|
|
return null;
|
|
}
|
|
|
|
// SSA-stable object: lazily create reference at first access point.
|
|
$result = $this->hoistStableObjectProp($objectVar, $propName, $propertyId, $def->type);
|
|
$this->setNativePropertyVar($expr, $result);
|
|
$this->setNativePropertyValueSource($expr, self::NATIVE_PROPERTY_VALUE_VAR);
|
|
return $result;
|
|
}
|
|
|
|
}
|
|
|