TypePHP 编译器
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1298 lines
62 KiB
1298 lines
62 KiB
<?php
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/**
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* This file is part of TypePHP.
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*
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* @link https://www.swoole.com/
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* @contact service@swoole.com
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*/
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namespace TypePhp\Parser;
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use TypePhp\Type;
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use TypePhp\Resolver\PropertyWriteTarget;
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use PhpParser\Node;
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use PhpParser\Node\ArrayItem;
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use PhpParser\Node\Expr;
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use PhpParser\Node\Expr\Variable;
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use PhpParser\NodeAbstract;
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trait AssignOpTrait
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{
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protected function parseAssignArrayDim(NodeAbstract $left, NodeAbstract $right): string
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{
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if ($left instanceof Expr\ArrayDimFetch && $left->dim !== null) {
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$this->assertNotNativeObjectArrayKey($left->dim);
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}
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if ($left instanceof Expr\ArrayDimFetch) {
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$this->assertNotNativeObjectArrayDimensionReceiver($left->var, $left);
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}
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if ($this->isPropertyFetch($left)) {
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return $this->parseAssignPropertyArrayDim($left, $right);
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}
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if ($this->isVarExpr($left->var) && $left->var->name === 'GLOBALS') {
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$target = $this->parseGlobalsArrayDimFetch($left);
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$tmp = $this->genTmpVarName();
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if ($this->isNativeObjectVar($target)) {
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$targetClass = $this->getNativeObjectVarClass($target);
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$rightClass = $this->detectClassOfExpr($right);
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if ($this->isNull($right)) {
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$value = 'nullptr';
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} elseif (!$this->isNativeObjectClass($rightClass)) {
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$this->fatalError($right, "Native object `\${$target}` cannot be converted to var/object");
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} elseif (!$this->isObjectClassStaticallyAssignableTo($rightClass, $targetClass)) {
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$this->fatalError($right, "Cannot assign native object `{$rightClass}` to `{$targetClass}`");
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} else {
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$value = $this->parseExprAsValue($right);
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}
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$this->addLocalVar($tmp, $this->getNativeObjectPointerType($targetClass));
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$this->addNativeObject($tmp, $targetClass);
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} else {
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$value = $this->parseExprAsValue($right);
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$this->addLocalVar($tmp, Type::VAR);
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}
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return '((' . $tmp . ' = ' . $value . ', ' . $target . ' = ' . $tmp . '), ' . $tmp . ')';
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}
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$array = $this->parseWritableIdentifier($left->var);
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$code = '';
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if (!$this->hasVar($array) and $this->isVarExpr($left->var)) {
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$this->addLocalVar($array, Type::ARRAY);
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}
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$value = $this->parseExprAsValue($right);
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$tmp = $this->genTmpVarName();
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$this->addLocalVar($tmp, Type::VAR);
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// item(dim, true) updates an existing reference's value, while offsetSet()
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// replaces the array bucket and breaks the reference. Keep offsetSet() for
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// ArrayAccess objects; dynamically typed/reference containers need a
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// runtime array check because either representation is possible.
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$arrayType = $this->getVarType($array);
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if ($left->dim === null) {
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return $code . '((' . $tmp . ' = ' . $value . ', ' . "{$array}.offsetSet(" . self::VALUE_NULL . ", {$tmp})" . '), ' . $tmp . ')';
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}
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$dim = $this->parseIdentifier($left->dim);
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if ($arrayType === Type::ARRAY) {
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return $code . '((' . $tmp . ' = ' . $value . ', ' . "{$array}.item({$dim}, true) = {$tmp}" . '), ' . $tmp . ')';
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}
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if ($arrayType === Type::VAR || $arrayType === Type::REF) {
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$writeArray = "static_cast<void>({$array}.item({$dim}, true) = {$tmp})";
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$writeOther = "{$array}.offsetSet({$dim}, {$tmp})";
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return $code . '((' . $tmp . ' = ' . $value . ', '
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. "({$array}.isArray() ? {$writeArray} : {$writeOther})"
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. '), ' . $tmp . ')';
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}
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return $code . '((' . $tmp . ' = ' . $value . ', ' . "{$array}.offsetSet({$dim}, {$tmp})" . '), ' . $tmp . ')';
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}
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protected function parseAssignPropertyFetch(NodeAbstract $left, NodeAbstract $right, ?PropertyWriteTarget $target = null): string
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{
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if ($target !== null) {
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$this->assertCanAssignPropertyWrite($target, $right);
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}
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$rightExpr = $this->parseExprAsValue($right);
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if ($target !== null) {
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$rightExpr = $this->wrapPropertyWriteTypeCheck($target, $right, $rightExpr);
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} else {
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$rightExpr = $this->wrapObjectPropertyAssignTypeCheck($left, $right, $rightExpr);
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}
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$tmp = $this->genTmpVarName();
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$this->addLocalVar($tmp, Type::VAR);
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// Comma expression: store RHS → execute side effect → evaluate to stored value
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return '((' . $tmp . ' = ' . $rightExpr . ', ' . $this->emitDynamicPropertyFetchWrite($left, $tmp, $target) . '), ' . $tmp . ')';
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}
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protected function parseRightAssociativeAssign(NodeAbstract $left, Expr\Assign $right): string
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{
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$chain[] = $left;
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$next = $right;
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while ($this->isAssignExpr($next)) {
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$var = $next->var;
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$chain[] = $var;
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$next = $next->expr;
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}
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$tmpVar = $this->genTmpVarName();
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$nativeClass = $this->detectClassOfExpr($next);
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if ($this->isNativeObjectClass($nativeClass)) {
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$this->addLocalVar($tmpVar, $this->getNativeObjectPointerType($nativeClass));
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$this->addNativeObject($tmpVar, $nativeClass);
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} else {
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$this->addLocalVar($tmpVar, Type::VAR);
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}
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// 翻转赋值链
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$chain = array_reverse($chain);
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$list = [];
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$list[] = $tmpVar . ' = ' . $this->parseExpr($next);
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$rightVar = new Variable($tmpVar);
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foreach ($chain as $var) {
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$list[] = $this->parseAssignFinally($var, $rightVar);
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}
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return '(' . implode(', ', $list) . ')';
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}
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protected function parseAssign(Expr\Assign $v): string
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{
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$left = $v->var;
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$right = $v->expr;
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if ($this->isAssignExpr($right)) {
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return $this->parseRightAssociativeAssign($left, $right);
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}
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if ($left instanceof Expr\List_ && $v->getAttribute(self::ATTR_STATEMENT_EXPRESSION, false)) {
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$optimized = $this->parseAssignToMultiReturn($left, $right);
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if ($optimized !== null) {
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return $optimized;
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}
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}
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return $this->parseAssignFinally($left, $right);
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}
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private function parseAssignToMultiReturn(Expr\List_ $left, Expr $right): ?string
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{
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if (!$right instanceof Expr\FuncCall
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|| (!$this->isNameExpr($right->name) && !$this->isFullNameExpr($right->name))) {
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return null;
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}
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$nativeFunc = $this->findNativeFunction($this->parseIdentifier($right->name));
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if ($nativeFunc === false) {
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return null;
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}
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$functionDef = $this->getFunction($nativeFunc);
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if (!$functionDef->hasMultiReturn()
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|| $functionDef->multiReturnCount < count($left->items)
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|| $this->shouldUseDynamicCallForNativeArgs($nativeFunc, $right->args)) {
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return null;
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}
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$variables = [];
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foreach ($left->items as $item) {
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if (!$item instanceof ArrayItem || $item->key !== null || $item->unpack || $item->byRef
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|| !$this->isVarExpr($item->value) || !is_string($item->value->name)) {
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return null;
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}
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$name = $this->parseWritableIdentifier($item->value);
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if ($this->hasVar($name) && $this->getVarType($name) !== Type::VAR) {
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return null;
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}
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$variables[] = $name;
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}
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foreach ($variables as $variableName) {
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if (!$this->hasVar($variableName)) {
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$this->addLocalVar($variableName, Type::VAR);
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}
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}
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$tieItems = array_merge(
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$variables,
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array_fill(0, $functionDef->multiReturnCount - count($variables), 'std::ignore'),
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);
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$right->setAttribute(self::ATTR_MULTI_RETURN_IMPL, true);
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return 'std::tie(' . implode(', ', $tieItems) . ') = ' . $this->parseFuncCall($right);
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}
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protected function parseAssignToList(Expr $left, Expr $right): string
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{
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$items = $left->items;
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$code = '{';
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$this->indentLevel++;
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$tmpVar = $this->genTmpVarName();
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$this->addLocalVar($tmpVar, Type::VAR);
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$code .= $this->getIndent() . $tmpVar . ' = ' . $this->parseExpr($right) . '; ';
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foreach ($items as $k => $item) {
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if (!$item) {
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continue;
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}
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if ($item instanceof ArrayItem) {
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$key = $item->key ? $this->parseArrayKey($item->key) : (string) $k;
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if ($item->value instanceof Expr\List_) {
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$nestedTmp = $this->genTmpVarName();
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$this->addLocalVar($nestedTmp, Type::ARRAY);
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$code .= "{$nestedTmp} = {$tmpVar}.item({$key}); ";
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$code .= $this->parseAssignToList($item->value, new Variable($nestedTmp));
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} else {
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$var = $this->parseWritableIdentifier($item->value);
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if ($this->isVarExpr($item->value) and !$this->hasVar($var)) {
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$this->addLocalVar($var, Type::VAR);
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}
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$code .= "{$var} = {$tmpVar}.item({$key}); ";
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}
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} else {
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abort($item);
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}
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}
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$this->indentLevel--;
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return $code . '}';
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}
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protected function parseAssignFinally(Expr $left, Expr $right): string
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{
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$this->assertNotNullsafeWriteContext($left);
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$rightClass = $this->detectClassOfExpr($right);
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// A Native-element std container owns a PHPX Box but its raw pointer
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// elements are traced only by the function-local container root frame.
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// Copying the whole Box into any other value slot could outlive that
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// frame, so reject the escape once at the assignment boundary. Element
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// reads/writes do not pass the container variable itself as the RHS.
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if ($this->isVarExpr($right)) {
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$this->assertStdContainerDoesNotEscapeNativeObjects(
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$right,
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$this->parseIdentifier($right),
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);
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}
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if ($left instanceof Expr\List_) {
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if ($this->isNativeObjectClass($rightClass)) {
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$this->fatalError($right, 'Native objects cannot be destructured into PHP values');
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}
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return $this->parseAssignToList($left, $right);
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}
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if ($this->isNativeObjectClass($rightClass)) {
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$allowed = false;
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if ($this->isVarExpr($left)) {
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$leftName = $this->parseVariable($left);
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$declaredClass = $this->getDeclaredObjectType($leftName);
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if ($declaredClass !== '' && $this->isInterface($declaredClass)) {
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$this->fatalError(
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$left,
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'Native objects cannot be assigned to interface-typed variables',
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);
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}
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$allowed = !$this->hasVar($leftName)
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|| $this->isNativeObjectVar($leftName)
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|| $this->hasScopeGlobalVar($leftName)
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|| $this->hasStaticVar($leftName);
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if ($allowed && ($this->hasScopeGlobalVar($leftName) || $this->hasStaticVar($leftName))) {
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$this->promoteGlobalOrStaticToNativeObject($leftName, $rightClass, $right);
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}
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} elseif (($globalSlot = $this->getStaticGlobalsSlot($left)) !== null) {
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if (!$this->hasGlobalVar($globalSlot)) {
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$this->addGlobalVar($globalSlot, Type::VAR);
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}
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if (!$this->hasScopeGlobalVar($globalSlot)) {
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$this->addScopeGlobalVar($globalSlot, $this->globalVars[$globalSlot]);
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}
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$this->promoteGlobalOrStaticToNativeObject($globalSlot, $rightClass, $right);
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$allowed = true;
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} elseif ($left instanceof Expr\PropertyFetch && $this->isIdExpr($left->name)) {
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$receiverClass = $this->detectClassOfExpr($left->var);
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if ($this->isNativeObjectClass($receiverClass)) {
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$propertyName = $left->name->toString();
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$resolution = $this->resolveNativeInstanceProperty($left, $propertyName, $receiverClass);
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if ($resolution !== null) {
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$this->applyNativePropertyAccessResult($left, $resolution);
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}
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$property = $resolution?->propertyDef;
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if ($property !== null && $property->class !== '' && $this->isInterface($property->class)) {
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$this->fatalError(
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$left,
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'Native objects cannot be assigned to interface-typed properties',
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);
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}
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$allowed = $property !== null
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&& $property->type === Type::OBJECT
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&& $this->isNativeObjectClass($property->class);
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}
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} elseif ($left instanceof Expr\ArrayDimFetch && $this->isStdContainerExpr($left)) {
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$info = $this->isStdArrayExpr($left)
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? $this->getStdArrayInfo($left)
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: $this->getStdContainerInfo($left);
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// A std container with a concrete Native class element type is
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// compile-time storage, not a PHP array/Variant boundary.
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$allowed = $info !== null
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&& isset($info['class'])
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&& $this->isNativeObjectClass($info['class']);
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}
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if (!$allowed) {
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$this->fatalError(
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$left,
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'Native objects cannot be stored in PHP arrays, PHP object properties, static properties, or mixed variables',
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);
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}
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}
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// A direct assignment to readonly must go through write_property so
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// Zend can enforce scope, initialization state, type and clone rules.
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$propertyWriteTarget = $this->preparePropertyWriteTarget($left, true);
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$type = $this->detectTypeOfExpr($right);
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$finalVarType = $this->getNormalAssignType($type);
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$runtimeObjectAssignClass = '';
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$assigningNullToTypedObject = false;
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$markNativeObjectNonNull = false;
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if ($type === Type::VOID) {
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$type = Type::VAR;
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}
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if ($left instanceof Expr\PropertyFetch && ($setter = $this->getPropertyHookSetter($left)) !== null) {
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return $this->parseAssignPropertyHook($left, $right, $propertyWriteTarget, $setter);
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}
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if ($left instanceof Expr\PropertyFetch && $this->isReadOnlyPropertyHook($left)) {
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$this->fatalError($left, 'Cannot write to read-only hooked property');
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}
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if ($left instanceof Expr\PropertyFetch && $this->isIdExpr($left->name)) {
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$receiverClass = $this->detectClassOfExpr($left->var);
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if ($this->isNativeObjectClass($receiverClass)) {
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$property = $left->name->toString();
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$access = $this->getNativePropertyAccess($left);
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if ($access === null) {
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$resolution = $this->resolveNativeInstanceProperty($left, $property, $receiverClass);
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if ($resolution === null) {
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$this->fatalError($left, "Native class `{$receiverClass}` has no property `\${$property}`");
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}
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$this->applyNativePropertyAccessResult($left, $resolution);
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$access = $this->getNativePropertyAccess($left);
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}
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$def = $access->getPropertyDef();
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// Parse and materialize the receiver before the right-hand
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// expression. PHP evaluates an object/property target before
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// its assigned value, and C++ operand order must not decide it.
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$leftExpr = $this->parsePropertyFetch($left);
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if ($def->type === Type::OBJECT && $this->isNativeObjectClass($def->class)) {
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if ($this->isNull($right)) {
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if (!$def->nullable) {
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$this->fatalError($right, "Cannot assign null to native property `{$receiverClass}::\${$property}`");
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}
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return $leftExpr . ' = nullptr';
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}
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$rightClass = $this->detectClassOfExpr($right);
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if ($rightClass === '' || !$this->isObjectClassStaticallyAssignableTo($rightClass, $def->class)) {
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$this->fatalError($right, "Cannot assign value to native property `{$receiverClass}::\${$property}`");
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}
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return $leftExpr . ' = ' . $this->parseExprAsValue($right);
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}
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$this->assertCanAssignPropertyWrite($propertyWriteTarget, $right);
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$rightExpr = $this->parseExprAsValue($right);
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$rightExpr = $this->wrapPropertyWriteTypeCheck($propertyWriteTarget, $right, $rightExpr);
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if ($def->type !== Type::VAR) {
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$rightExpr = $this->convertExprFromType($def->type, $rightExpr);
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}
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return $leftExpr . ' = ' . $rightExpr;
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}
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}
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if ($propertyWriteTarget !== null && $this->shouldUseDynamicNativePropertyWrite($left, $type)) {
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return $this->parseAssignPropertyFetch($left, $right, $propertyWriteTarget);
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}
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if ($this->isVarExpr($left)) {
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$var = $this->parseWritableIdentifier($left);
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if ($var === 'this_') {
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$this->fatalError($left, 'Cannot re-assign $this');
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}
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$assigningNullToTypedObject = $this->hasVar($var)
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&& $this->getVarType($var) === Type::OBJECT
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&& $this->isNull($right);
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if ($this->isStdContainer($var)) {
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$copyAssign = $this->parseStdContainerCopyAssign($var, $right);
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if ($copyAssign !== null) {
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return $copyAssign;
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}
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}
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// 类型推断，获取对象的类名，如果不是对象则返回空字符串
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$rightClass = $this->detectClassOfExpr($right);
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$markNativeObjectNonNull = $this->context->scopeLevel <= 1
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&& !$this->hasScopeGlobalVar($var)
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&& !$this->hasStaticVar($var)
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&& $this->isNativeObjectClass($rightClass)
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&& $this->isNativeObjectExpressionKnownNonNull($right);
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if ($this->isNativeObjectVar($var)) {
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// Assignment rebinds the local pointer slot. Even an
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// assignment nested in a conditional invalidates the simple
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// non-null proof; later reads fall back to nativeDeref().
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$this->forgetNativeObjectNonNull($var);
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$leftClass = $this->getNativeObjectVarClass($var);
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if ($this->isNull($right)) {
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return $var . ' = nullptr';
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}
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if ($rightClass === '' || !$this->isNativeObjectClass($rightClass)) {
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$this->fatalError($right, "Native object `\${$var}` cannot be converted to var/object");
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}
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if (!$this->isObjectClassStaticallyAssignableTo($rightClass, $leftClass)) {
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$this->fatalError($right, "Cannot assign native object `{$rightClass}` to `{$leftClass}`");
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}
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}
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// 右值是一个对象，已获得类的名称，左值必须与右值的类一致
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if ($rightClass) {
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if (!$this->hasVar($var)) {
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if ($this->isNativeObjectClass($rightClass)) {
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$this->addLocalVar($var, $this->getNativeObjectPointerType($rightClass));
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$this->addNativeObject($var, $rightClass);
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} else {
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$this->addLocalVar($var, Type::OBJECT);
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$this->addObject($var, $rightClass);
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}
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} elseif (($leftClass = $this->getDeclaredObjectType($var)) !== '') {
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if ($this->isObjectClassStaticallyAssignableTo($rightClass, $leftClass)) {
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// A child object can be assigned to a parent typed object.
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} elseif ($this->isInterface($rightClass) || $this->isAbstractClass($rightClass) || $this->isObjectClassStaticallyAssignableTo($leftClass, $rightClass)) {
|
|
if ($this->isKnownConcreteObjectExpr($right, $rightClass)) {
|
|
$this->fatalError($left, "Cannot re-assign typed object `\${$var}` from `{$leftClass}` to `{$rightClass}`");
|
|
}
|
|
// Parent/interface/abstract declarations are not precise enough for a concrete typed object.
|
|
$runtimeObjectAssignClass = $leftClass;
|
|
} else {
|
|
$this->fatalError($left, "Cannot re-assign typed object `\${$var}` from `{$leftClass}` to `{$rightClass}`");
|
|
}
|
|
} else {
|
|
$this->checkVarAssignExpr($left, $this->getVarType($var), Type::OBJECT);
|
|
}
|
|
} else {
|
|
if ($this->isMethodCall($right) and $this->isNamedMethod($right->name)) {
|
|
$methodName = $right->name->toString();
|
|
if (in_array($methodName, ['toStdArray', 'toStdVector', 'toStdMap', 'toStdOrderedMap'], true)) {
|
|
if ($this->hasVar($var)) {
|
|
$this->fatalError($left, "Cannot re-assign `\${$var}` to {$methodName}()");
|
|
}
|
|
if ($this->context->scopeLevel > 1) {
|
|
$this->fatalError($left, "Must use {$methodName}() in the top-level scope of the function");
|
|
}
|
|
return $this->parseToStdAssign($var, $right);
|
|
}
|
|
}
|
|
if ($this->isFuncCallExpr($right) and $this->isNameExpr($right->name)) {
|
|
$type = $type === Type::VOID ? Type::VAR : $type;
|
|
} elseif ($this->isStaticCall($right) and $this->isNameExpr($right->class) and $this->isIdExpr($right->name)) {
|
|
$class = $this->parseIdentifier($right->class);
|
|
if ($class === 'std') {
|
|
if (in_array($right->name->toString(), ['array', 'vector', 'map', 'ordered_map'], true)) {
|
|
if ($this->hasScopeGlobalVar($var) || $this->hasStaticVar($var)) {
|
|
$this->assertNativeStdContainerFunctionLocal($right);
|
|
}
|
|
if ($this->hasVar($var)) {
|
|
$this->fatalError($left, "Cannot re-assign `\${$var}` to std::{$right->name->toString()}");
|
|
}
|
|
if ($this->context->scopeLevel > 1) {
|
|
$this->fatalError($left, "Must create std::{$right->name->toString()} in the top-level scope of the function");
|
|
}
|
|
if ($right->name->toString() === 'array') {
|
|
$this->addLocalVar($var, Type::STD_ARRAY);
|
|
return $this->parseStdArray($var, $right);
|
|
}
|
|
if ($right->name->toString() === 'vector') {
|
|
$this->addLocalVar($var, Type::STD_VECTOR);
|
|
return $this->parseStdVector($var, $right);
|
|
}
|
|
if ($right->name->toString() === 'map') {
|
|
$this->addLocalVar($var, Type::STD_MAP);
|
|
return $this->parseStdMap($var, $right);
|
|
}
|
|
$this->addLocalVar($var, Type::STD_ORDERED_MAP);
|
|
return $this->parseStdOrderedMap($var, $right);
|
|
} else {
|
|
$valueExpr = $this->parseStdCall($right);
|
|
if (!$this->hasVar($var)) {
|
|
$finalVarType = $right->getAttribute('nativeType');
|
|
$this->addLocalVar($var, $finalVarType);
|
|
}
|
|
return $var . ' = ' . $valueExpr;
|
|
}
|
|
}
|
|
} elseif ($this->isVarExpr($right)) {
|
|
$rightVar = $this->parseIdentifier($right);
|
|
$this->assertStdContainerDoesNotEscapeNativeObjects($right, $rightVar);
|
|
$type = $this->isStdContainer($rightVar) ? Type::ARRAY : $this->getVarType($rightVar);
|
|
$finalVarType = $this->getNormalAssignType($type);
|
|
$leftClass = $this->getDeclaredObjectType($var);
|
|
$rightClass = $this->getDeclaredObjectType($rightVar);
|
|
if ($leftClass !== '' and $rightClass !== '') {
|
|
if ($this->isObjectClassStaticallyAssignableTo($rightClass, $leftClass)) {
|
|
// A child object can be assigned to a parent typed object.
|
|
} elseif ($this->isInterface($rightClass) || $this->isAbstractClass($rightClass) || $this->isObjectClassStaticallyAssignableTo($leftClass, $rightClass)) {
|
|
$runtimeObjectAssignClass = $leftClass;
|
|
} else {
|
|
$this->fatalError($left, "Cannot re-assign typed object `\${$var}` from `{$leftClass}` to `{$rightClass}`");
|
|
}
|
|
}
|
|
}
|
|
// 变量第一次被赋值，确定其类型，由于 PHP 的变量作用域是 function 级的，在 for/while 块中声明的变量，可以在块外使用
|
|
if (!$this->hasVar($var)) {
|
|
$finalVarType = $this->getNormalAssignType($type);
|
|
$finalVarType = $this->isNativeType($finalVarType) ? $this->getNativeType($finalVarType) : $finalVarType;
|
|
$this->addLocalVar($var, $finalVarType);
|
|
} else {
|
|
$finalVarType = $this->getVarType($var);
|
|
$this->checkVarAssignExpr($left, $finalVarType, $type);
|
|
$declaredObjectClass = $this->getDeclaredObjectType($var);
|
|
if (!$assigningNullToTypedObject
|
|
&& $finalVarType === Type::OBJECT
|
|
&& $declaredObjectClass !== ''
|
|
&& ($type === Type::VAR || $type === Type::OBJECT)) {
|
|
$runtimeObjectAssignClass = $declaredObjectClass;
|
|
}
|
|
}
|
|
}
|
|
} elseif ($this->isPropertyFetch($left) and !$this->isNativePropertyAccess($left)) {
|
|
return $this->parseAssignPropertyFetch($left, $right, $propertyWriteTarget);
|
|
} elseif ($this->isArrayDimFetch($left) and $this->isVarExpr($left->var)) {
|
|
$tmp = $this->parseIdentifier($left->var);
|
|
if ($this->getVarType($tmp) === Type::STR and $left->dim === null) {
|
|
$this->fatalError($left, 'Cannot use [] for strings');
|
|
}
|
|
if ($this->isStdContainerExpr($left)) {
|
|
return $this->parseStdContainerAssign($left, $right);
|
|
}
|
|
return $this->parseAssignArrayDim($left, $right);
|
|
} elseif ($this->isArrayDimFetch($left) and $this->isPropertyFetch($left->var)) {
|
|
return $this->parseAssignPropertyArrayDim($left, $right);
|
|
}
|
|
|
|
if ($propertyWriteTarget !== null) {
|
|
$this->assertCanAssignPropertyWrite($propertyWriteTarget, $right);
|
|
}
|
|
|
|
$var = $this->parseWritableIdentifier($left);
|
|
$rightExpr = $this->parseAssignRightExpr($right);
|
|
if ($propertyWriteTarget !== null) {
|
|
$rightExpr = $this->wrapPropertyWriteTypeCheck($propertyWriteTarget, $right, $rightExpr);
|
|
}
|
|
if ($assigningNullToTypedObject) {
|
|
// php::Object intentionally keeps the inferred class as its C++ type,
|
|
// while an empty/null value represents the same state as unset($var).
|
|
$rightExpr = 'php::Object{' . $rightExpr . '}';
|
|
}
|
|
if ($runtimeObjectAssignClass !== '') {
|
|
// A typed object has two valid runtime states: the declared class or
|
|
// null. Evaluate a dynamic RHS once, preserve null, and validate only
|
|
// actual objects against the inferred class constraint.
|
|
$checkedValue = 'typephp_nullable_object_value';
|
|
$rightExpr = '([&](php::Var ' . $checkedValue . ') -> php::Object {'
|
|
. ' if (' . $checkedValue . '.isNull()) { return php::Object{' . $checkedValue . '}; }'
|
|
. ' return php::toObject(' . $checkedValue . ', ' . $this->getClassEntryPtr($runtimeObjectAssignClass) . ');'
|
|
. ' })(' . $rightExpr . ')';
|
|
}
|
|
if ($markNativeObjectNonNull) {
|
|
// Parsing is sequential: this proof affects only subsequent source
|
|
// expressions. Nested control flow is excluded above because its
|
|
// assignment may not execute on every path.
|
|
$this->markNativeObjectNonNull($var);
|
|
}
|
|
$leftExprType = $this->detectTypeOfExpr($left);
|
|
$rightExprType = $this->detectTypeOfExpr($right);
|
|
if ($propertyWriteTarget !== null && ($propertyDef = $this->getNativePropertyDef($left)) !== null) {
|
|
$effectiveRightType = $rightExprType === Type::VAR && $this->getNativeScalarPropertyTypeCheckHelper($propertyDef) !== null
|
|
? $propertyDef->type
|
|
: $rightExprType;
|
|
return $var . ' = ' . $this->convertNativePropertyWriteExpr($propertyDef->type, $effectiveRightType, $rightExpr);
|
|
}
|
|
if ($finalVarType === Type::VAR) {
|
|
return $var . ' = ' . $rightExpr;
|
|
} else {
|
|
return $var . ' = ' . $this->convertExprType($rightExpr, $leftExprType, $rightExprType);
|
|
}
|
|
}
|
|
|
|
protected function parseAssignPropertyHook(
|
|
Expr\PropertyFetch $left,
|
|
Expr $right,
|
|
?PropertyWriteTarget $target,
|
|
string $setter,
|
|
): string {
|
|
$property = $this->getNativePropertyDef($left);
|
|
$nativeObjectClass = $property !== null
|
|
&& $property->type === Type::OBJECT
|
|
&& $this->isNativeObjectClass($property->class)
|
|
? $property->class
|
|
: '';
|
|
if ($target !== null) {
|
|
$this->assertCanAssignPropertyWrite($target, $right);
|
|
}
|
|
if ($nativeObjectClass !== '') {
|
|
if ($this->isNull($right)) {
|
|
if (!$property->nullable) {
|
|
$this->fatalError($right, "Cannot assign null to native property `{$nativeObjectClass}`");
|
|
}
|
|
$rightExpr = 'nullptr';
|
|
} else {
|
|
$rightClass = $this->detectClassOfExpr($right);
|
|
if ($rightClass === ''
|
|
|| !$this->isNativeObjectClass($rightClass)
|
|
|| !$this->isObjectClassStaticallyAssignableTo($rightClass, $nativeObjectClass)
|
|
) {
|
|
$this->fatalError($right, "Cannot assign value to native property of type `{$nativeObjectClass}`");
|
|
}
|
|
$rightExpr = $this->parseExprAsValue($right);
|
|
}
|
|
} else {
|
|
$rightExpr = $this->parseExprAsValue($right);
|
|
}
|
|
if ($target !== null && $nativeObjectClass === '') {
|
|
$rightExpr = $this->wrapPropertyWriteTypeCheck($target, $right, $rightExpr);
|
|
}
|
|
$tmp = $this->genTmpVarName();
|
|
if ($nativeObjectClass !== '') {
|
|
// The synthesized value variable is also the assignment result and
|
|
// the setter argument. Preserve its exact Native type so argument
|
|
// validation and NativeRootFrame generation do not see a mixed
|
|
// Zend value at this compiler-created boundary.
|
|
$this->addLocalVar($tmp, $this->getNativeObjectPointerType($nativeObjectClass));
|
|
$this->addNativeObject($tmp, $nativeObjectClass);
|
|
} else {
|
|
$this->addLocalVar($tmp, Type::VAR);
|
|
}
|
|
$call = $this->emitPropertyHookSetterCall($left, $setter, new Expr\Variable($tmp));
|
|
return '((' . $tmp . ' = ' . $rightExpr . ', ' . $call . '), ' . $tmp . ')';
|
|
}
|
|
|
|
protected function shouldUseDynamicNativePropertyWrite(Expr $left, string $rightType): bool
|
|
{
|
|
if (!$this->isPropertyFetch($left)) {
|
|
return false;
|
|
}
|
|
|
|
$def = $this->getNativePropertyDef($left);
|
|
if ($def === null) {
|
|
return false;
|
|
}
|
|
|
|
if ($def->isReadonly()) {
|
|
return true;
|
|
}
|
|
|
|
return !in_array($def->type, [Type::INT, Type::FLOAT, Type::BOOL, Type::STR, Type::ARRAY], true)
|
|
&& $rightType === Type::VAR;
|
|
}
|
|
|
|
protected function parseStdContainerCopyAssign(string $leftVar, Expr $right): ?string
|
|
{
|
|
$rightInfo = $this->getStdContainerExprInfo($right);
|
|
if ($rightInfo === null) {
|
|
return null;
|
|
}
|
|
|
|
$leftInfo = $this->getStdContainerVarInfo($leftVar);
|
|
if (!$this->isSameStdContainerInfo($leftInfo, $rightInfo)) {
|
|
$this->fatalError($right, 'Cannot copy std container with different type');
|
|
}
|
|
|
|
if (!$this->isStdArray($leftVar)) {
|
|
$this->assertStdContainerStructureMutable($right, $leftVar);
|
|
}
|
|
|
|
return $leftVar . '_ref = ' . $this->parseStdContainerCopyExpr($right);
|
|
}
|
|
|
|
protected function parseAssignRightExpr(Expr $right): string
|
|
{
|
|
$rightExpr = $this->parseExprAsValue($right);
|
|
if ($this->isVarExpr($right)) {
|
|
$rightVar = $this->parseIdentifier($right);
|
|
if ($this->isStdContainer($rightVar)) {
|
|
return $this->convertArrayExpr($rightExpr);
|
|
}
|
|
}
|
|
return $rightExpr;
|
|
}
|
|
|
|
protected function removeAssignOp(string $op): string
|
|
{
|
|
return str_replace('=', '', $op);
|
|
}
|
|
|
|
protected function parseAssignOp(Expr\AssignOp $node, string $op): string
|
|
{
|
|
$this->assertNativeObjectOperatorOperandSupported($node->var, $node, $op);
|
|
$this->assertNotNullsafeWriteContext($node->var);
|
|
$this->assertNativePropertyHookDirectWriteTarget($node->var);
|
|
$pythonOperator = $this->parsePythonAssignOperator($node);
|
|
if ($pythonOperator !== null) {
|
|
return $pythonOperator;
|
|
}
|
|
$propertyWriteTarget = $this->preparePropertyWriteTarget($node->var);
|
|
$this->guardLiteralDivisionByZero($node->expr, $op);
|
|
|
|
if ($node->var instanceof Expr\PropertyFetch && $this->isNativeObjectPropertyHook($node->var)) {
|
|
$this->fatalError(
|
|
$node->var,
|
|
'Native property hooks only support direct reads and assignments',
|
|
);
|
|
}
|
|
|
|
if ($node->var instanceof Expr\PropertyFetch && $this->isReadOnlyPropertyHook($node->var)) {
|
|
$this->fatalError($node->var, 'Cannot write to read-only hooked property');
|
|
}
|
|
|
|
if ($node->var instanceof Expr\PropertyFetch
|
|
&& ($setter = $this->getPropertyHookSetter($node->var)) !== null
|
|
&& ($getter = $this->getPropertyHookGetter($node->var)) !== null) {
|
|
$read = $this->emitPropertyHookGetterCall($node->var, $getter);
|
|
$tmp = $this->genTmpVarName();
|
|
$this->addLocalVar($tmp, Type::VAR);
|
|
$binaryOp = $this->removeAssignOp($op);
|
|
$value = match ($binaryOp) {
|
|
'.' => $this->parseFlattenedConcat($node->expr, [
|
|
$this->prepareConcatOperand($read, $this->detectTypeOfExpr($node->var)),
|
|
]),
|
|
'**' => 'php::fn::pow(' . $read . ', ' . $this->parseExprAsValue($node->expr) . ')',
|
|
default => $read . ' ' . $binaryOp . ' (' . $this->parseExprAsValue($node->expr) . ')',
|
|
};
|
|
$call = $this->emitPropertyHookSetterCall($node->var, $setter, new Expr\Variable($tmp));
|
|
return '((' . $tmp . ' = ' . $value . ', ' . $call . '), ' . $tmp . ')';
|
|
}
|
|
|
|
$nativePropertyAssignOp = $this->parseNativePropertyAssignOp($node, $op);
|
|
if ($nativePropertyAssignOp !== null) {
|
|
return $nativePropertyAssignOp;
|
|
}
|
|
|
|
$var = $this->parseWritableIdentifier($node->var);
|
|
$expr = $this->isAssignOpConcat($op) ? '' : (string) $this->parseIdentifier($node->expr);
|
|
|
|
if ($this->isVarExpr($node->var)) {
|
|
if (!$this->hasVar($var)) {
|
|
$this->fatalError($node->var, 'Cannot assign to undefined variable');
|
|
}
|
|
$type = $this->detectVarType($node->var);
|
|
$rightType = $this->detectTypeOfExpr($node->expr);
|
|
|
|
// Big* types: expand compound assignment to static method call.
|
|
// BigInt/BigDecimal/BigFloat are immutable Box types stored inside
|
|
// php::Var — Variant::operator+= calls ZendVM add_function which
|
|
// cannot handle them. We must generate `$v = Type::add($v, $x)`.
|
|
if ($type === Type::BIGINT || $type === Type::DECIMAL || $type === Type::BIGFLOAT) {
|
|
return $this->parseBigAssignOp($node, $var, $type, $expr, $rightType, $op);
|
|
}
|
|
|
|
$rightExprStr = $this->convertExprType($expr, $type, $rightType);
|
|
if ($this->isAssignOpConcat($op)) {
|
|
if ($this->isArrayVar($node->var)) {
|
|
$this->fatalError($node->var, 'Cannot concat string to array');
|
|
}
|
|
return $var . ' = ' . $this->parseFlattenedConcat($node->expr, [
|
|
$this->prepareConcatOperand($var, $type),
|
|
]);
|
|
}
|
|
if ($this->isAssignOpPow($op)) {
|
|
$powExpr = 'php::fn::pow(' . $var . ', ' . $rightExprStr . ')';
|
|
return $var . ' = ' . $this->convertVarType($var, $powExpr);
|
|
}
|
|
return $var . ' ' . $op . ' ' . $rightExprStr;
|
|
}
|
|
|
|
if ($this->isArrayDimFetch($node->var)) {
|
|
if ($this->isStdContainerExpr($node->var)) {
|
|
return $this->parseStdContainerAssignOp($node, $op);
|
|
}
|
|
/**
|
|
* $count[$r] -= 1;
|
|
* 需要转为下面语句：
|
|
* $tmp_var = $count[$r] - 1;
|
|
* $count[$r] = $tmp_var;.
|
|
*/
|
|
$type = $this->detectVarType($node->var);
|
|
$rightType = $this->detectTypeOfExpr($node->expr);
|
|
$tmpVar = $this->genTmpVarName();
|
|
$this->addLocalVar($tmpVar, $rightType);
|
|
$dim = $this->parseIdentifier($node->var->dim);
|
|
$readVar = $this->parseArrayDimFetchRead($node->var);
|
|
$binaryOp = $this->removeAssignOp($op);
|
|
|
|
if ($binaryOp === '.') {
|
|
$this->context->beforeStmtLines[] = "{$tmpVar} = " .
|
|
$this->parseFlattenedConcat($node->expr, [
|
|
$this->prepareConcatOperand($this->convertVarType($tmpVar, $readVar), $type),
|
|
]) . ';';
|
|
} elseif ($type === Type::BIGINT || $type === Type::DECIMAL || $type === Type::BIGFLOAT) {
|
|
$bigAssign = $this->parseBigAssignOpExpr($readVar, $type, $expr, $rightType, $binaryOp, $node->var, $node->expr);
|
|
$this->context->beforeStmtLines[] = "{$tmpVar} = {$bigAssign};";
|
|
} else {
|
|
$this->context->beforeStmtLines[] = "{$tmpVar} = " .
|
|
$this->convertVarType($tmpVar, $readVar) . ' ' .
|
|
$binaryOp . ' ' .
|
|
$this->convertExprType($expr, $type, $rightType) . ';';
|
|
}
|
|
|
|
if ($this->isVarExpr($node->var->var) && $node->var->var->name === 'GLOBALS') {
|
|
return $var . ' = ' . $tmpVar;
|
|
}
|
|
return '(' . $this->parseArrayDimStore($node->var->var, $dim, $tmpVar) . ', ' . $tmpVar . ')';
|
|
}
|
|
|
|
if ($this->isPropertyFetch($node->var) and !$this->isNativePropertyAccess($node->var)) {
|
|
if ($propertyWriteTarget !== null) {
|
|
$this->assertCanAssignPropertyWrite($propertyWriteTarget, $node->expr);
|
|
}
|
|
$binaryOp = $this->removeAssignOp($op);
|
|
$tmpVar = $this->genTmpVarName();
|
|
$this->addLocalVar($tmpVar, Type::VAR);
|
|
$readProperty = $this->emitDynamicPropertyFetchRead($node->var, $propertyWriteTarget);
|
|
if ($this->isAssignOpConcat($op)) {
|
|
$this->context->beforeStmtLines[] = "{$tmpVar} = " .
|
|
$this->parseFlattenedConcat($node->expr, [
|
|
$this->prepareConcatOperand($readProperty, $this->detectTypeOfExpr($node->var)),
|
|
]) . ';';
|
|
} elseif ($this->isAssignOpPow($op)) {
|
|
$this->context->beforeStmtLines[] = "{$tmpVar} = php::fn::pow({$readProperty}, {$expr});";
|
|
} else {
|
|
$this->context->beforeStmtLines[] = "{$tmpVar} = {$readProperty} {$binaryOp} ({$expr});";
|
|
}
|
|
$this->context->afterStmtLines[] = $this->emitDynamicPropertyFetchWrite($node->var, $tmpVar, $propertyWriteTarget) . ';';
|
|
return $tmpVar;
|
|
}
|
|
|
|
if ($this->isAssignOpConcat($op)) {
|
|
if (!($node->expr instanceof Expr\BinaryOp\Concat)) {
|
|
return $var . '.append(' . $this->parseExprAsValue($node->expr) . ')';
|
|
}
|
|
return $var . ' = php::toString(' . $this->parseFlattenedConcat($node->expr, [$var]) . ')';
|
|
}
|
|
return $var . ' ' . $op . ' (' . $expr . ')';
|
|
}
|
|
|
|
protected function parseNativePropertyAssignOp(Expr\AssignOp $node, string $op): ?string
|
|
{
|
|
if (!$this->isPropertyFetch($node->var)) {
|
|
return null;
|
|
}
|
|
|
|
$def = $this->getNativePropertyDef($node->var);
|
|
if ($def === null) {
|
|
return null;
|
|
}
|
|
if ($def->isReadonly()) {
|
|
// A native scalar reference mutates the property zval directly and
|
|
// bypasses Zend's readonly checks. Keep readonly properties on the
|
|
// normal attr() path so no raw scalar reference escapes the wrapper.
|
|
return null;
|
|
}
|
|
|
|
$rightType = $this->detectTypeOfExpr($node->expr);
|
|
if (in_array($def->type, [Type::BIGINT, Type::DECIMAL, Type::BIGFLOAT], true)) {
|
|
$binaryOp = $this->removeAssignOp($op);
|
|
$leftExpr = $this->parseWritableIdentifier($node->var);
|
|
$rightExpr = (string) $this->parseIdentifier($node->expr);
|
|
$value = $this->parseBigAssignOpExpr(
|
|
$leftExpr,
|
|
$def->type,
|
|
$rightExpr,
|
|
$rightType,
|
|
$binaryOp,
|
|
$node->var,
|
|
$node->expr,
|
|
);
|
|
return $leftExpr . ' = ' . $value;
|
|
}
|
|
if ($this->isFixedObjectProp($def) && $rightType !== Type::VAR && !$this->canAssignStaticTypeToObjectProperty($def, $rightType)) {
|
|
$this->fatalError(
|
|
$node->var,
|
|
'Cannot assign ' . $this->getPropertyAssignmentTypeName($rightType)
|
|
. ' to property ' . $this->getObjectPropertyTypeCheckDisplayName($node->var)
|
|
. ' of type ' . $this->getObjectPropertyTypeCheckTypeString($def)
|
|
);
|
|
}
|
|
if (!$this->canUseNativePropertyAssignOp($def->type, $rightType, $op)) {
|
|
return null;
|
|
}
|
|
|
|
$var = $this->parseWritableIdentifier($node->var);
|
|
if (!$this->isNativePropertyTypedValue($node->var)) {
|
|
$helper = $def->type === Type::FLOAT ? 'typephp_static_float_ref' : 'typephp_static_int_ref';
|
|
$var = $helper . '(' . $var . '.unwrap_ptr())';
|
|
}
|
|
|
|
$rightExpr = $this->parseIdentifier($node->expr);
|
|
if ($rightType === Type::VAR) {
|
|
$rightExpr = $this->wrapObjectPropertyAssignTypeCheck($node->var, $node->expr, $rightExpr);
|
|
}
|
|
$effectiveRightType = $rightType === Type::VAR && $this->getNativeScalarPropertyTypeCheckHelper($def) !== null
|
|
? $def->type
|
|
: $rightType;
|
|
|
|
return $var . ' ' . $op . ' (' . $this->convertNativePropertyWriteExpr($def->type, $effectiveRightType, $rightExpr) . ')';
|
|
}
|
|
|
|
protected function convertNativePropertyWriteExpr(string $propertyType, string $rightType, string $rightExpr): string
|
|
{
|
|
if ($propertyType === $rightType) {
|
|
return $rightExpr;
|
|
}
|
|
|
|
return $this->convertExprFromType($propertyType, $rightExpr);
|
|
}
|
|
|
|
protected function canUseNativePropertyAssignOp(string $propertyType, string $rightType, string $op): bool
|
|
{
|
|
if ($rightType !== Type::VAR && !($propertyType === $rightType || ($propertyType === Type::FLOAT && $rightType === Type::INT))) {
|
|
return false;
|
|
}
|
|
|
|
return match ($propertyType) {
|
|
Type::INT => in_array($op, ['+=', '-=', '*=', '%=', '<<=', '>>=', '&=', '|=', '^='], true),
|
|
Type::FLOAT => in_array($op, ['+=', '-=', '*=', '/='], true),
|
|
default => false,
|
|
};
|
|
}
|
|
|
|
protected function parseBigAssignOp(Expr\AssignOp $node, string $var, string $type, string $expr, string $rightType, string $op): string
|
|
{
|
|
$binaryOp = $this->removeAssignOp($op);
|
|
$bigExpr = $this->parseBigAssignOpExpr($var, $type, $expr, $rightType, $binaryOp, $node->var, $node->expr);
|
|
return $var . ' = ' . $bigExpr;
|
|
}
|
|
|
|
protected function parseBigAssignOpExpr(string $leftExpr, string $leftType, string $rightExpr, string $rightType, string $binaryOp, NodeAbstract $errorNode, ?NodeAbstract $rightNode = null): string
|
|
{
|
|
[$class, $opMap] = match ($leftType) {
|
|
Type::BIGINT => ['BigInt', ['+' => 'add', '-' => 'sub', '*' => 'mul', '/' => 'div', '%' => 'mod', '&' => 'bitAnd', '|' => 'bitOr', '^' => 'bitXor', '<<' => 'bitShiftLeft', '>>' => 'bitShiftRight']],
|
|
Type::DECIMAL => ['Decimal', ['+' => 'add', '-' => 'sub', '*' => 'mul', '/' => 'div', '%' => 'mod']],
|
|
Type::BIGFLOAT => ['BigFloat', ['+' => 'add', '-' => 'sub', '*' => 'mul', '/' => 'div']],
|
|
};
|
|
|
|
$method = $opMap[$binaryOp] ?? null;
|
|
if ($method === null) {
|
|
$this->fatalError($errorNode, "Unsupported compound assignment operator '{$binaryOp}' for type {$leftType}");
|
|
}
|
|
|
|
// For bitwise shifts, the right operand is a shift amount (Int), not BigInt
|
|
$isShift = ($binaryOp === '<<' || $binaryOp === '>>');
|
|
$convertedRight = match ($leftType) {
|
|
Type::BIGINT => $isShift ? $rightExpr : $this->convertBigIntExpr($rightExpr, $rightType),
|
|
Type::DECIMAL => $this->convertDecimalExpr($rightExpr, $rightType, $rightNode),
|
|
Type::BIGFLOAT => $this->convertBigFloatExpr($rightExpr, $rightType),
|
|
};
|
|
|
|
return 'php::' . $class . '::' . $method . '(' . $leftExpr . ', ' . $convertedRight . ')';
|
|
}
|
|
|
|
protected function parseAssignOpConcat(Expr\AssignOp\Concat $expr): string
|
|
{
|
|
return $this->parseAssignOp($expr, '.=');
|
|
}
|
|
|
|
protected function parseAssignOpPlus(Expr\AssignOp\Plus $expr): string
|
|
{
|
|
return $this->parseAssignOp($expr, '+=');
|
|
}
|
|
|
|
protected function parseAssignOpMinus(Expr\AssignOp\Minus $expr): string
|
|
{
|
|
return $this->parseAssignOp($expr, '-=');
|
|
}
|
|
|
|
protected function parseAssignOpMod(Expr\AssignOp\Mod $expr): string
|
|
{
|
|
return $this->parseAssignOp($expr, '%=');
|
|
}
|
|
|
|
protected function parseAssignOpMul(Expr\AssignOp\Mul $expr): string
|
|
{
|
|
return $this->parseAssignOp($expr, '*=');
|
|
}
|
|
|
|
protected function parseAssignOpDiv(Expr\AssignOp\Div $expr): string
|
|
{
|
|
return $this->parseAssignOp($expr, '/=');
|
|
}
|
|
|
|
protected function parseAssignOpBitwiseAnd(Expr\AssignOp\BitwiseAnd $expr): string
|
|
{
|
|
return $this->parseAssignOp($expr, '&=');
|
|
}
|
|
|
|
protected function parseAssignOpBitwiseOr(Expr\AssignOp\BitwiseOr $expr): string
|
|
{
|
|
return $this->parseAssignOp($expr, '|=');
|
|
}
|
|
|
|
protected function parseAssignOpPow(Expr\AssignOp\Pow $expr): string
|
|
{
|
|
return $this->parseAssignOp($expr, '**=');
|
|
}
|
|
|
|
protected function parseArrayDimStore($array, $dim, $var): string
|
|
{
|
|
$id = $this->parseWritableIdentifier($array);
|
|
|
|
return $id . '.offsetSet(' . $dim . ', ' . $var . ')';
|
|
}
|
|
|
|
protected function parseAssignOpShiftLeft(Expr\AssignOp\ShiftLeft $node): string
|
|
{
|
|
return $this->parseAssignOp($node, '<<=');
|
|
}
|
|
|
|
protected function parseAssignOpShiftRight(Expr\AssignOp\ShiftRight $node): string
|
|
{
|
|
return $this->parseAssignOp($node, '>>=');
|
|
}
|
|
|
|
protected function parseAssignOpBitwiseXor(Expr\AssignOp\BitwiseXor $node): string
|
|
{
|
|
return $this->parseAssignOp($node, '^=');
|
|
}
|
|
|
|
protected function parseAssignRef(Expr\AssignRef $expr): string
|
|
{
|
|
$this->assertNotNullsafeWriteContext($expr->var);
|
|
$this->assertNativePropertyHookDirectWriteTarget($expr->var);
|
|
$this->assertNativePropertyHookDirectWriteTarget($expr->expr);
|
|
if ($expr->expr instanceof Expr\NullsafePropertyFetch) {
|
|
$this->fatalError($expr->expr, 'Cannot take reference of a nullsafe chain');
|
|
}
|
|
|
|
$this->assertNativeObjectReferenceForbidden($expr->var, $expr);
|
|
$this->assertNativeObjectReferenceForbidden($expr->expr, $expr);
|
|
foreach ([$expr->var, $expr->expr] as $referenceOperand) {
|
|
if ($this->isVarExpr($referenceOperand)) {
|
|
$this->assertStdContainerDoesNotEscapeNativeObjects(
|
|
$referenceOperand,
|
|
$this->parseIdentifier($referenceOperand),
|
|
);
|
|
}
|
|
}
|
|
|
|
// A reference would outlive the constructor-only write window and
|
|
// make later mutations invisible to the compiler. It is therefore
|
|
// forbidden on either side even inside the declaring constructor.
|
|
$this->assertReadonlyPropertyReferenceForbidden($expr->var, $expr, true);
|
|
$this->assertReadonlyPropertyReferenceForbidden($expr->expr, $expr, false);
|
|
|
|
$left = $this->parseWritableIdentifier($expr->var);
|
|
// Keep this write-context form for every RHS kind. Re-parsing it as a
|
|
// read later breaks append and missing-key targets such as
|
|
// `$array[] =& $source`.
|
|
|
|
if ($this->isVarExpr($expr->var)) {
|
|
if (!$this->hasVar($left)) {
|
|
$this->addLocalVar($left, Type::REF);
|
|
} else {
|
|
$type = $this->getVarType($left);
|
|
if ($type !== Type::REF) {
|
|
$this->fatalError($expr, 'Cannot assign reference to variable of type ' . $type);
|
|
}
|
|
}
|
|
}
|
|
|
|
$tmpVar = $this->addTmpVar(Type::REF);
|
|
$rightExpr = '';
|
|
|
|
if ($this->isVarExpr($expr->expr)) {
|
|
$rightExpr = $tmpVar . ' = ' . $this->parseIdentifier($expr->expr) . '.toReference()';
|
|
} elseif ($expr->expr instanceof Expr\FuncCall && $this->isNameExpr($expr->expr->name)) {
|
|
$name = $this->parseIdentifier($expr->expr->name);
|
|
$function = $this->findNativeFunction($name);
|
|
if ($function) {
|
|
if (!$this->getFunction($function)->returnsByRef) {
|
|
$this->fatalError($expr, 'Cannot assign reference to a function that does not return by reference');
|
|
}
|
|
} else {
|
|
$reflection = \TypePhp\Resolver\Reflection::getFunction(ltrim($this->getNamespacedFuncName($name), '\\'));
|
|
if ($reflection === null || !$reflection->isInternal() || !$reflection->returnsReference()) {
|
|
$this->fatalError($expr, 'Cannot assign reference to a function that does not return by reference');
|
|
}
|
|
}
|
|
$rightExpr = $tmpVar . ' = ' . $this->parseExpr($expr->expr);
|
|
} elseif ($expr->expr instanceof Expr\FuncCall) {
|
|
$rightExpr = $tmpVar . ' = php::toReferenceExact(' . $this->parseExpr($expr->expr) . ')';
|
|
} elseif ($expr->expr instanceof Expr\MethodCall) {
|
|
if (!$this->isNamedMethod($expr->expr->name) || !$this->isVarExpr($expr->expr->var)) {
|
|
$rightExpr = $tmpVar . ' = php::toReferenceExact(' . $this->parseExpr($expr->expr) . ')';
|
|
} else {
|
|
$object = $this->parseIdentifier($expr->expr->var);
|
|
$method = $this->parseIdentifier($expr->expr->name);
|
|
$function = $this->findNativeMethod($expr->expr, $object, $method);
|
|
if (!$function) {
|
|
$rightExpr = $tmpVar . ' = php::toReferenceExact(' . $this->parseExpr($expr->expr) . ')';
|
|
} else {
|
|
if (!$this->getFunction($function)->returnsByRef) {
|
|
$this->fatalError($expr, 'Cannot assign reference to a method that does not return by reference');
|
|
}
|
|
$rightExpr = $tmpVar . ' = ' . $this->parseExpr($expr->expr);
|
|
}
|
|
}
|
|
} elseif ($expr->expr instanceof Expr\StaticCall) {
|
|
if (!$this->isNameExpr($expr->expr->class) || !$this->isIdExpr($expr->expr->name)) {
|
|
$rightExpr = $tmpVar . ' = php::toReferenceExact(' . $this->parseExpr($expr->expr) . ')';
|
|
} else {
|
|
$class = $this->parseIdentifier($expr->expr->class);
|
|
if ($class === 'self') {
|
|
$class = $this->getFullClassName();
|
|
} elseif ($class === 'parent') {
|
|
if (!$this->classDef || !$this->classDef->extends) {
|
|
$this->fatalError($expr, 'Cannot use "parent" outside a class or class does not extend any class');
|
|
}
|
|
$class = $this->classDef->extends;
|
|
} elseif ($class !== 'static') {
|
|
$class = $this->getNamespacedClassName($class);
|
|
}
|
|
$method = $this->parseIdentifier($expr->expr->name);
|
|
$function = $class === 'static' ? false : $this->getNativeMethod($expr->expr, $class, $method);
|
|
if (!$function) {
|
|
$rightExpr = $tmpVar . ' = php::toReferenceExact(' . $this->parseExpr($expr->expr) . ')';
|
|
} else {
|
|
if (!$this->getFunction($function)->returnsByRef) {
|
|
$this->fatalError($expr, 'Cannot assign reference to a static method that does not return by reference');
|
|
}
|
|
$rightExpr = $tmpVar . ' = ' . $this->parseExpr($expr->expr);
|
|
}
|
|
}
|
|
} elseif ($this->isPropertyFetch($expr->expr)) {
|
|
$rightExpr = $tmpVar . ' = ' . $this->emitDynamicPropertyFetchRef($expr->expr, $expr);
|
|
} elseif ($this->isStaticPropertyFetch($expr->expr)) {
|
|
$rightExpr = $tmpVar . ' = ' . $this->emitStaticPropertyFetchRef($expr->expr, $expr);
|
|
} elseif ($this->isArrayDimFetch($expr->expr)) {
|
|
$array = $this->parseWritableIdentifier($expr->expr->var);
|
|
if ($expr->expr->dim == null) {
|
|
$this->fatalError($expr, 'Cannot assign reference to array dim fetch without dim');
|
|
}
|
|
$rightExpr = $tmpVar . ' = ' . $array . '.itemRef(' . $this->parseIdentifier($expr->expr->dim) . ')';
|
|
} else {
|
|
$this->fatalError($expr, 'Cannot assign reference to ' . $this->parseIdentifier($expr->expr));
|
|
}
|
|
|
|
$this->context->beforeStmtLines[] = $rightExpr . ';';
|
|
if ($expr->var instanceof Expr\PropertyFetch && $this->isNativePropertyAccess($expr->var)) {
|
|
return $left . '.rebindReference(' . $tmpVar . ')';
|
|
}
|
|
return $left . ' = &' . $tmpVar;
|
|
}
|
|
|
|
protected function parseAssignPropertyArrayDim(NodeAbstract $left, NodeAbstract $right): string
|
|
{
|
|
$this->assertNativePropertyHookDirectWriteTarget($left);
|
|
$propertyWriteTarget = $this->preparePropertyWriteTarget($left->var);
|
|
$code = '';
|
|
$value = $this->parseExprAsValue($right);
|
|
|
|
$tmp = $this->genTmpVarName();
|
|
$this->addLocalVar($tmp, Type::VAR);
|
|
|
|
if ($left->dim === null) {
|
|
return $code . '((' . $tmp . ' = ' . $value . ', ' . $this->emitDynamicPropertyFetchAppendArray($left->var, $tmp, $propertyWriteTarget) . '), ' . $tmp . ')';
|
|
}
|
|
$dim = $this->parseIdentifier($left->dim);
|
|
|
|
return $code . '((' . $tmp . ' = ' . $value . ', ' . $this->emitDynamicPropertyFetchUpdateArray($left->var, $dim, $tmp, $propertyWriteTarget) . '), ' . $tmp . ')';
|
|
}
|
|
|
|
protected function parseAssignOpCoalesce(Expr\AssignOp\Coalesce $expr): string
|
|
{
|
|
$this->checkLeftValue($expr->var);
|
|
|
|
$rightClass = $this->detectClassOfExpr($expr->expr);
|
|
$nativeRight = $this->isNativeObjectClass($rightClass);
|
|
|
|
// An undefined variable must exist before generating its isset check.
|
|
// A Native RHS establishes a typed nullptr slot; it must never be
|
|
// declared as Variant because boxing the raw pointer would coerce it
|
|
// to bool. Other values retain the normal nullable Variant behavior.
|
|
$var = $this->isVarExpr($expr->var) ? $this->parseIdentifier($expr->var) : null;
|
|
$globalSlot = $this->getStaticGlobalsSlot($expr->var);
|
|
if ($globalSlot !== null) {
|
|
if (!$this->hasGlobalVar($globalSlot)) {
|
|
$this->addGlobalVar($globalSlot, Type::VAR);
|
|
}
|
|
if (!$this->hasScopeGlobalVar($globalSlot)) {
|
|
$this->addScopeGlobalVar($globalSlot, $this->globalVars[$globalSlot]);
|
|
}
|
|
if ($nativeRight) {
|
|
$this->promoteGlobalOrStaticToNativeObject($globalSlot, $rightClass, $expr->expr);
|
|
}
|
|
$var = $globalSlot;
|
|
} elseif ($nativeRight
|
|
&& $expr->var instanceof Expr\ArrayDimFetch
|
|
&& $this->isVarExpr($expr->var->var)
|
|
&& $expr->var->var->name === 'GLOBALS'
|
|
) {
|
|
$this->fatalError(
|
|
$expr->var,
|
|
'Native objects cannot be stored in dynamically addressed `$GLOBALS`',
|
|
);
|
|
}
|
|
if ($var !== null && !$this->hasVar($var)) {
|
|
if ($nativeRight) {
|
|
$this->addLocalVar($var, $this->getNativeObjectPointerType($rightClass));
|
|
$this->addNativeObject($var, $rightClass);
|
|
} else {
|
|
$this->addLocalVar($var, Type::VAR);
|
|
}
|
|
}
|
|
if ($var !== null && $this->isNativeObjectVar($var)) {
|
|
$leftClass = $this->getNativeObjectVarClass($var);
|
|
if ($this->isNull($expr->expr)) {
|
|
// nullptr remains a valid nullable slot value.
|
|
} elseif (!$nativeRight) {
|
|
$this->fatalError($expr->expr, "Native object `\${$var}` cannot be converted to var/object");
|
|
} elseif (!$this->isObjectClassStaticallyAssignableTo($rightClass, $leftClass)) {
|
|
$this->fatalError(
|
|
$expr->expr,
|
|
"Cannot assign native object `{$rightClass}` to `{$leftClass}`",
|
|
);
|
|
}
|
|
}
|
|
|
|
$isset = $var !== null && $this->isNativeObjectVar($var)
|
|
? $var . ' != nullptr'
|
|
: $this->parseChainedExpr($expr->var, self::OP_ISSET);
|
|
|
|
$var ??= $this->parseWritableIdentifier($expr->var);
|
|
$propertyWriteTarget = $this->preparePropertyWriteTarget($expr->var);
|
|
|
|
if ($propertyWriteTarget !== null) {
|
|
$this->assertCanAssignPropertyWrite($propertyWriteTarget, $expr->expr);
|
|
}
|
|
|
|
$rightBeforeCount = count($this->context->beforeStmtLines);
|
|
$rightAfterCount = count($this->context->afterStmtLines);
|
|
$right = $this->parseExpr($expr->expr);
|
|
$rightBefore = array_slice($this->context->beforeStmtLines, $rightBeforeCount);
|
|
$rightAfter = array_slice($this->context->afterStmtLines, $rightAfterCount);
|
|
$this->context->beforeStmtLines = array_slice(
|
|
$this->context->beforeStmtLines,
|
|
0,
|
|
$rightBeforeCount,
|
|
);
|
|
$this->context->afterStmtLines = array_slice(
|
|
$this->context->afterStmtLines,
|
|
0,
|
|
$rightAfterCount,
|
|
);
|
|
if ($propertyWriteTarget !== null) {
|
|
$right = $this->wrapPropertyWriteTypeCheck($propertyWriteTarget, $expr->expr, $right);
|
|
}
|
|
if ($this->isVarExpr($expr->expr) and !$this->hasVar($right)) {
|
|
$this->errorUndefinedVariable($expr->expr);
|
|
}
|
|
$targetClass = $var !== null && $this->isNativeObjectVar($var)
|
|
? $this->getNativeObjectVarClass($var)
|
|
: $this->detectClassOfExpr($expr->var);
|
|
if (($rightBefore !== [] || $rightAfter !== []) && $this->isNativeObjectClass($targetClass)) {
|
|
$tmp = $this->genTmpVarName();
|
|
$pointerType = $this->getNativeObjectPointerType($targetClass);
|
|
$this->addLocalVar($tmp, $pointerType);
|
|
$this->addNativeObject($tmp, $targetClass);
|
|
$code = '[&]() -> ' . $pointerType . ' {' . PHP_EOL;
|
|
$code .= $this->getIndent() . 'if (' . $isset . ') { return ' . $var . '; }' . PHP_EOL;
|
|
$code .= $this->formatCapturedStmtLines($rightBefore);
|
|
$code .= $this->getIndent() . $tmp . ' = ' . $right . ';' . PHP_EOL;
|
|
$code .= $this->formatCapturedStmtLines($rightAfter);
|
|
$code .= $this->getIndent() . $var . ' = ' . $tmp . ';' . PHP_EOL;
|
|
$code .= $this->getIndent() . 'return ' . $var . ';' . PHP_EOL;
|
|
$code .= $this->getIndent() . '}()';
|
|
return $code;
|
|
}
|
|
$this->appendCapturedStmtLinesToContext($rightBefore);
|
|
foreach ($rightAfter as $stmt) {
|
|
$this->context->afterStmtLines[] = $stmt;
|
|
}
|
|
return '(' . $isset . '?' . $var . ':(' . $var . ' = ' . $right . '))';
|
|
}
|
|
|
|
protected function getNormalAssignType(string $type): string
|
|
{
|
|
return $type === Type::REF || $type === Type::VOID ? Type::VAR : $type;
|
|
}
|
|
|
|
}
|
|
|