TypePHP 编译器
https://swoole.com/aot/
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653 lines
25 KiB
653 lines
25 KiB
<?php
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/**
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* This file is part of Swoole-Compiler(AOT).
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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 PhpAot\Php;
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use MJS\TopSort\Implementations\StringSort;
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use PhpAot\Php\Entity\ClassDef;
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use PhpAot\Php\Entity\ConstantDef;
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use PhpAot\Php\Entity\FunctionDef;
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use PhpAot\Php\Entity\MethodDef;
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use PhpAot\Php\Entity\PropertyDef;
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use PhpAot\Php\Exception\SyntaxError;
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use PhpAot\Php\Exception\Unsupported;
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use PhpParser\Modifiers;
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use PhpParser\Node;
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use PhpParser\Node\NullableType;
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use PhpParser\Node\UnionType;
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use PhpParser\NodeAbstract;
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use PhpParser\NodeFinder;
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use PhpParser\NodeTraverser;
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class Preprocessor extends CompilerBase
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{
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protected bool $enableCache = false;
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public function sortFiles(array &$list): void
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{
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$sorter = new StringSort();
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$fileDeps = [];
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// 构建依赖关系图
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foreach ($this->symbolCallInFile as $file => $symbols) {
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$deps = [];
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foreach ($symbols as $symbol) {
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if (isset($this->symbolDeclInFile[$symbol])) {
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$depFile = $this->symbolDeclInFile[$symbol];
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if ($depFile !== $file) {
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$deps[] = $depFile;
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}
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}
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}
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$deps = array_unique($deps);
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$fileDeps[$file] = $deps;
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$sorter->add($file, $deps);
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}
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$sortedFiles = $sorter->sort();
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// 添加未参与依赖管理的文件（非 stub 文件且不在已排序列表中）
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foreach ($list as $file) {
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if (!$this->isStubFile($file) and !in_array($file, $sortedFiles)) {
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$sortedFiles[] = $file;
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}
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}
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$list = $sortedFiles;
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$this->climate->lightBlue('prepare completed: ' . count($list) . ' source files in total');
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}
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public function getCppFile(string $file): string
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{
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$info = pathinfo($file);
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return $this->buildDir . '/' . $this->removeCommonPrefix($this->buildDir, $info['dirname'] . '/' . $info['filename'] . '.cc');
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}
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public function getObjectFile(string $cppFile): string
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{
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$info = pathinfo($cppFile);
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return $info['dirname'] . '/' . $info['filename'] . '.o';
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}
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public function hasCppFileCache(string $file): bool
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{
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if (!$this->enableCache or $this->climate->arguments->defined('force')) {
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return false;
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}
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$cppFile = $this->getCppFile($file);
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if (file_exists($cppFile) and filemtime($cppFile) > filemtime($file)) {
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return true;
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}
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return false;
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}
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public function prepare(string $file): void
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{
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if ($this->hasCppFileCache($file)) {
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$this->climate->darkGray('skip: ' . $file . ', cache exists');
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return;
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}
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$phpCode = $this->loadFile($file);
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$this->symbolCallInFile[$this->file] = [];
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$this->resetFile();
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$this->resetFunction();
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$this->resetMethod();
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$this->resetClass();
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$this->resetNamespace();
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$this->climate->info('prepare: ' . $this->getRelativePath($this->file));
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try {
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$ast = $this->parser->parse($phpCode);
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} catch (\PhpParser\Error $e) {
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$this->climate->red("Fatal error: {$e->getMessage()} in {$this->file}");
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throw new SyntaxError($e->getMessage(), $e->getCode());
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}
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$traverser = new NodeTraverser();
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$traverser->addVisitor(new Visitor());
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$stmts = $traverser->traverse($ast);
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foreach ($stmts as $v) {
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$type = $v->getType();
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switch ($type) {
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case 'Stmt_Namespace':
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$this->prepareNamespace($v);
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break;
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case 'Stmt_Enum':
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case 'Stmt_Class':
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case 'Stmt_Trait':
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$this->prepareClass($v);
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break;
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case 'Stmt_Function':
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$this->prepareFunction($v) . PHP_EOL;
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break;
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case 'Stmt_Use':
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$this->parseUse($v);
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break;
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case 'Stmt_Declare':
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case 'Stmt_Interface':
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case 'Stmt_Nop':
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break;
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case 'Stmt_Const':
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$this->parseConstDef($v);
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break;
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case 'Stmt_Expression':
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$this->foundStrayCode($v);
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// no break
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default:
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$this->fatalError($v, 'Unsupported statement: ' . $type);
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}
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}
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}
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protected function findSymbolUsing(NodeAbstract $ast)
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{
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$nodeFinder = new NodeFinder();
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$functionCalls = $nodeFinder->findInstanceOf($ast, Node\Expr\FuncCall::class);
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foreach ($functionCalls as $call) {
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if ($call->name instanceof Node\Name) {
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// 内置函数不参与依赖管理
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$funcName = strtolower($call->name->toString());
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if (!$this->isInternalFunction($funcName)) {
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$this->symbolCallInFile[$this->file][] = $funcName;
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}
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}
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}
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$depClasses = [];
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$depClasses = array_merge($depClasses, $nodeFinder->findInstanceOf($ast, Node\Expr\StaticCall::class));
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$depClasses = array_merge($depClasses, $nodeFinder->findInstanceOf($ast, Node\Expr\StaticPropertyFetch::class));
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$depClasses = array_merge($depClasses, $nodeFinder->findInstanceOf($ast, Node\Expr\ClassConstFetch::class));
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$depClasses = array_merge($depClasses, $nodeFinder->findInstanceOf($ast, Node\Expr\New_::class));
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foreach ($depClasses as $call) {
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if ($call->class instanceof Node\Name) {
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$className = $this->parseIdentifier($call->class);
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if ($className !== 'self' && $className !== 'static') {
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$fullClassName = $this->getNamespacedClassName($className);
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$this->symbolCallInFile[$this->file][] = strtolower($fullClassName);
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}
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}
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}
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// 依赖去重
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$depClasses = array_unique($this->symbolCallInFile[$this->file]);
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$this->symbolCallInFile[$this->file] = $depClasses;
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}
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protected function prepareNamespace(Node\Stmt\Namespace_ $node): void
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{
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$this->resetClass();
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$this->resetMethod();
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$this->resetFunction();
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$this->resetNamespace();
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$this->namespace = $node->name ? $this->parseIdentifier($node->name) : '';
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foreach ($node->stmts as $v2) {
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$type2 = $v2->getType();
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switch ($type2) {
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case 'Stmt_Class':
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case 'Stmt_Enum':
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case 'Stmt_Trait':
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$this->prepareClass($v2);
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break;
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case 'Stmt_Function':
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$this->prepareFunction($v2) . PHP_EOL;
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break;
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case 'Stmt_Use':
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$this->parseUse($v2);
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break;
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case 'Stmt_Const':
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case 'Stmt_Interface':
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break;
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case 'Stmt_Expression':
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$this->foundStrayCode($v2);
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// no break
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default:
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throw new Unsupported('Unsupported statement: ' . $type2);
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}
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}
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}
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/**
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* @param $params array<Node\Param>
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*/
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protected function parseParams(array $params, FunctionDef $functionDef): void
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{
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$list = [];
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$functionDef->argCountRequired = count($params);
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$defaultValueCount = 0;
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$last = array_key_last($params);
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foreach ($params as $i => $param) {
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// .stub 存根定义 C++ Native 函数，必须设置函数的参数类型
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if ($this->stubFile and !$param->type) {
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throw new \RuntimeException('No type for ' . $this->parseIdentifier($param->var));
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}
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// 构造方法属性定义语法（Constructor Property Promotion）
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if ($param->isPromoted()) {
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if (!$this->classDef or !$this->methodDef or $this->methodDef->name !== '__construct') {
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$this->fatalError($param, 'Promoted properties are not supported');
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}
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$name = $this->parseIdentifier($param->var);
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if ($param->type instanceof NullableType) {
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$type = $param->type->type;
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$nullable = true;
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} elseif ($param->type instanceof UnionType) {
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$type = 'mixed';
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$nullable = false;
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} else {
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$type = $param->type === null ? '' : $param->type;
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$nullable = false;
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}
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$default = $this->parseParamDefaultValue($param->default);
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$propertyDef = new PropertyDef($name, $param->flags, $type, $default, $nullable);
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$this->classDef->properties[$name] = $propertyDef;
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}
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if ($param->variadic) {
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if ($i !== $last) {
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$this->fatalError($param, 'Variadic parameters must be the last parameter');
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} elseif ($param->byRef) {
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$this->fatalError($param, 'Variadic parameters cannot be passed by reference');
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}
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}
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$name = $this->parseIdentifier($param->var);
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if ($this->method and $name == 'this_') {
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$this->fatalError($param, 'Cannot use `$this` as parameter of class method');
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}
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$argInfo = new ArgInfo();
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$type = $this->parseParameterType($param, $argInfo, $name);
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if ($param->variadic) {
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$list[] = self::TYPE_ARRAY . ' ' . $name;
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} else {
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$list[] = $type . ' ' . $name;
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}
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$argInfo->name = $name;
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$argInfo->type = $type;
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$argInfo->byRef = $param->byRef;
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$argInfo->variadic = $param->variadic;
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$argInfo->property = $param->isPromoted();
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if ($param->type and $param->type instanceof NullableType) {
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$argInfo->nullable = true;
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}
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if ($param->default) {
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if ($param->byRef) {
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if ($this->isEmptyArray($param->default)) {
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$argInfo->default = 'php::getEmptyArrayRef()';
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$argInfo->defaultValue = null;
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} elseif ($this->isNull($param->default)) {
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$argInfo->default = 'nullptr';
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$argInfo->defaultValue = null;
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} else {
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$argInfo->default = 'php::newReference(' . $this->parseParamDefaultValue($param->default) . ')';
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}
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} else {
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$argInfo->default = $this->parseParamDefaultValue($param->default);
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$argInfo->defaultValue = $param->default;
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}
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$defaultValueCount++;
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} elseif ($param->variadic) {
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// 变长参数可以视为空数组默认值
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$defaultValueCount++;
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$argInfo->default = '{}';
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$argInfo->defaultValue = new Node\Expr\Array_();
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}
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$functionDef->argInfoList[] = $argInfo;
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}
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$functionDef->params = implode(', ', $list);
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$functionDef->argCountRequired -= $defaultValueCount;
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}
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protected function parseFunctionDecl(Node\Stmt\Function_|Node\Stmt\ClassMethod $v): FunctionDef
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{
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// .stub 存根定义 C++ Native 函数，必须设置返回值类型
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if ($this->stubFile and !$v->returnType) {
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// 以下魔术方法都不能声明返回值类型 __construct()/__destruct()/__clone()
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if (($this->method and !in_array($this->method, ['__construct', '__destruct', '__clone'])) or !$this->method) {
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$name = $this->class ? $this->class . '::' . $v->name : $v->name;
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$this->fatalError($v, 'The return type of the function `' . $name . '` must be specified');
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}
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}
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// 返回值不能是引用类型
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if ($v->byRef) {
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$this->fatalError($v, 'The return type of the function `' . $v->name . '` cannot be a reference type');
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}
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$fnName = $this->parseIdentifier($v->name);
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$class = '';
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$returnType = $this->parseTypeDecl($v->returnType, self::DECL_TYPE_OF_RETURN, $class);
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// 构造、析构、克隆方法不能有返回值
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if ($this->method and in_array($this->method, ['__construct', '__destruct', '__clone'])) {
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$returnType = self::TYPE_VOID;
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}
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$functionDef = new FunctionDef($fnName, $returnType, $this->namespace);
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$functionDef->returnClass = $class;
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$functionDef->stub = $this->stubFile;
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$this->parseParams($v->params, $functionDef);
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// main 函数，返回值必须为 void 类型，参数必须为空或者 argc, argv 两个参数
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if (!$this->class and !$this->namespace and $fnName === 'main') {
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if (count($v->params) > 0) {
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if (count($v->params) != 2) {
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$this->fatalError($v, 'The parameters of the main function must be `(int $argc, array $argv)`.');
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}
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if ($returnType !== self::TYPE_VOID) {
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$this->fatalError($v, 'main function must return void');
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}
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if (!$this->checkArgType($functionDef->argInfoList[0]->type, self::TYPE_INT)) {
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$this->fatalError($v, 'The first parameter of the main function must be of type `int`.');
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}
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if (!$this->checkArgType($functionDef->argInfoList[1]->type, self::TYPE_ARRAY)) {
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$this->fatalError($v, 'The second parameter of the main function must be of type `array`.');
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}
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}
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}
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return $functionDef;
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}
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protected function prepareFunction(Node\Stmt\ClassMethod|Node\Stmt\Function_ $v): void
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{
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$this->resetFunction();
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$this->function = $this->parseIdentifier($v->name);
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$name = $this->getFunctionName($v);
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if ($this->hasFunction($name)) {
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$this->fatalError($v, "Duplicate function `{$name}`");
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}
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$functionDef = $this->parseFunctionDecl($v);
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$this->addFunction($name, $functionDef);
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if ($this->methodDef) {
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$functionDef->method = true;
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$this->methodDef->functionDef = $functionDef;
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}
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}
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protected function getParentClass(NodeAbstract $extends): string
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{
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if ($extends instanceof Node\Name\FullyQualified) {
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return $this->parseIdentifier($extends);
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} else {
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return $this->getNamespacedClassName($this->parseIdentifier($extends));
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}
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}
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protected function prepareClass(Node\Stmt\Class_|Node\Stmt\Trait_|Node\Stmt\Enum_ $class): string
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{
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$this->resetClass();
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$this->class = $this->parseIdentifier($class->name);
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$fullClassName = $this->getFullClassName();
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$fullClassNameLower = strtolower($fullClassName);
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if ($class instanceof Node\Stmt\Enum_) {
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$flags = Modifiers::PUBLIC;
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} elseif (!$class instanceof Node\Stmt\Trait_) {
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$flags = $class->flags;
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} else {
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$flags = Modifiers::PUBLIC;
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}
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$this->classDef = new ClassDef($this->class, $flags, $this->namespace);
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$this->addClass($fullClassName, $this->classDef);
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if (!empty($class->extends)) {
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$this->parentClass = $this->getParentClass($class->extends);
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$parentClassLower = strtolower($this->parentClass);
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if ($parentClassLower === $fullClassNameLower) {
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$this->fatalError($class, "Class {$fullClassName} cannot extend itself");
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}
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$this->classExtends[$fullClassNameLower] = $parentClassLower;
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if (!$this->isInternalClass($parentClassLower)) {
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$this->symbolCallInFile[$this->file][] = $parentClassLower;
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}
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$this->classDef->extends = $this->parentClass;
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// 是否继承了内置类
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$this->classDef->inheritedFromInternalClass = $this->isInternalClass($parentClassLower);
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}
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if ($class instanceof Node\Stmt\Enum_) {
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$this->classDef->enum = true;
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}
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if (!$class instanceof Node\Stmt\Trait_) {
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$this->classDef->implements = $this->parseImplements($class->implements);
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} else {
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$this->classDef->trait = $class;
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}
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if (isset($this->symbolDeclInFile[$fullClassNameLower])) {
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$this->fatalError($class, "Duplicate class `{$fullClassName}`");
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}
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$this->symbolDeclInFile[$fullClassNameLower] = $this->file;
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$code = '';
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foreach ($class->stmts as $v) {
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$type = $v->getType();
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switch ($type) {
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case 'Stmt_ClassConst':
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$this->parseClassConstDef($v);
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break;
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case 'Stmt_Property':
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$this->parseClassPropertyDef($v);
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break;
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case 'Stmt_TraitUse':
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$this->prepareTraitUse($v);
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break;
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case 'Stmt_Nop':
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case 'Stmt_EnumCase':
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break;
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case 'Stmt_ClassMethod':
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$this->prepareClassMethod($v, $class);
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break;
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case 'Stmt_Expression':
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$this->foundStrayCode($v);
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// no break
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default:
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abort($v);
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}
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}
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$this->resetClass();
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return $code;
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}
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protected function getMethodName(Node\Stmt\ClassMethod $v): string
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{
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return $this->parseIdentifier($v->name);
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}
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/**
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* 检查父类方法是否可以被重写，私有方法不能被重写
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*/
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protected function checkParentMethodCanBeOverridden(Node\Stmt\ClassMethod $v, string $name): void
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{
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$classDef = $this->classDef;
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while (true) {
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$extends = $classDef->extends;
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if (!$extends) {
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break;
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}
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// 父类是内置类
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if ($classDef->inheritedFromInternalClass) {
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if (Reflection::getClassMethodModifiers($extends, $name) & \ReflectionMethod::IS_PRIVATE) {
|
|
goto _error;
|
|
}
|
|
break;
|
|
}
|
|
$classDef = $this->getClass($extends);
|
|
if ($classDef->hasMethod($this->method)) {
|
|
$methodDef = $classDef->getMethod($this->method);
|
|
if ($methodDef->flags & Modifiers::PRIVATE) {
|
|
_error:
|
|
$this->fatalError($v,
|
|
'Cannot override private method `' .
|
|
$classDef->getNamespacedName(false) . '::' . $this->method . '()`');
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
protected function parseClassConstDef(Node\Stmt\ClassConst $v): void
|
|
{
|
|
$this->resetFunction();
|
|
$flags = $this->parseModifiers($v->flags);
|
|
$class = '';
|
|
|
|
if ($v->type) {
|
|
$type = $this->parseTypeDecl($v->type, self::DECL_TYPE_OF_CONST, $class);
|
|
} else {
|
|
$type = null;
|
|
}
|
|
|
|
foreach ($v->consts as $const) {
|
|
if ($type === null) {
|
|
$type = match ($const->value->getType()) {
|
|
'Expr_Array' => self::TYPE_ARRAY,
|
|
'Scalar_String' => self::TYPE_STR,
|
|
default => self::TYPE_VAR,
|
|
};
|
|
}
|
|
$constName = $this->parseIdentifier($const->name);
|
|
$constValue = $this->parseIdentifier($const->value);
|
|
|
|
$constInfo = new ConstantDef($constName, $flags, $type, $constValue);
|
|
$constInfo->valueExpr = $const->value;
|
|
|
|
if ($this->context->beforeStmtLines) {
|
|
$arrayExpr = '';
|
|
if ($this->context->localVars) {
|
|
$arrayExpr .= $this->genScopeVarDecl();
|
|
}
|
|
$arrayExpr .= $this->parseBeforeStmtLines();
|
|
$constInfo->arrayExpr = $arrayExpr;
|
|
}
|
|
$constInfo->class = $class;
|
|
$this->classDef->constants[$constInfo->name] = $constInfo;
|
|
}
|
|
}
|
|
|
|
protected function parseClassPropertyDef(Node\Stmt\Property $v): void
|
|
{
|
|
$oriCtx = $this->context;
|
|
$this->context = $this->classDef->propertyContext;
|
|
$flags = $this->parseModifiers($v->flags);
|
|
$class = '';
|
|
$type = $this->parseTypeDecl($v->type, self::DECL_TYPE_OF_PROPERTY, $class);
|
|
|
|
foreach ($v->props as $prop) {
|
|
$propDef = new PropertyDef($this->parseIdentifier($prop->name), $flags, $type);
|
|
if ($prop->default) {
|
|
$propDef->default = $this->parseIdentifier($prop->default);
|
|
if ($prop->default->getType() == 'Expr_Array') {
|
|
$propDef->type = self::TYPE_ARRAY;
|
|
}
|
|
}
|
|
$propDef->class = $class;
|
|
$this->classDef->properties[$propDef->name] = $propDef;
|
|
}
|
|
|
|
$this->context = $oriCtx;
|
|
}
|
|
|
|
protected function prepareClassMethod(Node\Stmt\ClassMethod $v, Node\Stmt\Class_|Node\Stmt\Trait_|Node\Stmt\Enum_ $class): void
|
|
{
|
|
$this->resetMethod();
|
|
$name = $this->getMethodName($v);
|
|
$this->method = $name;
|
|
$flags = $this->parseModifiers($v->flags);
|
|
$abstract = $flags & Modifiers::ABSTRACT;
|
|
|
|
if (!$abstract) {
|
|
$this->methodDef = new MethodDef($flags, $name);
|
|
if ($this->classDef->hasMethod($name)) {
|
|
$this->fatalError($v, "Duplicate method `{$this->method}`");
|
|
}
|
|
$this->prepareFunction($v) . PHP_EOL;
|
|
$this->checkRequiredArgNum($name, $this->methodDef, $v);
|
|
$this->classDef->addMethod($this->methodDef);
|
|
} else {
|
|
if (isset($class->flags) and !($class->flags & Modifiers::ABSTRACT)) {
|
|
$this->fatalError($v, "Class {$this->class} cannot override non-abstract method {$v->name}");
|
|
}
|
|
if ($this->method === '__construct') {
|
|
foreach ($v->params as $param) {
|
|
if ($param->isPromoted()) {
|
|
$this->fatalError($v, 'Cannot declare promoted property in an abstract constructor');
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
$fullClassName = $this->getFullClassName();
|
|
$fullMethodName = $fullClassName . '::' . $this->method;
|
|
$this->classMethodOverride[strtolower($fullMethodName)] = false;
|
|
// 查找父类是否有同名方法，递归查找
|
|
$fullClassNameLower = strtolower($fullClassName);
|
|
|
|
while (isset($this->classExtends[$fullClassNameLower])) {
|
|
$parentClass = $this->classExtends[$fullClassNameLower];
|
|
$parentMethodLower = strtolower($parentClass . '::' . $v->name);
|
|
// 父类有同名方法，子类覆盖了父类方法，这种情况不能直接使用 C++ 函数，而是使用 ZendVM 动态调用
|
|
if (isset($this->classMethodOverride[$parentMethodLower])) {
|
|
$this->classMethodOverride[$parentMethodLower] = true;
|
|
}
|
|
$fullClassNameLower = strtolower($parentClass);
|
|
}
|
|
$this->resetMethod();
|
|
}
|
|
|
|
protected function parseTraitUseOptions(Node\Stmt\TraitUse $traitUse, array &$aliases, array &$ignored): void
|
|
{
|
|
foreach ($traitUse->adaptations as $adaptation) {
|
|
if (!$adaptation->trait) {
|
|
$this->fatalError($traitUse, "Trait `use` cannot use `use` without `as`");
|
|
}
|
|
if ($adaptation instanceof Node\Stmt\TraitUseAdaptation\Alias) {
|
|
$trait1 = $this->getNamespacedClassName($adaptation->trait);
|
|
$methodName = $adaptation->method->toString();
|
|
if ($adaptation->newModifier) {
|
|
$this->fatalError($traitUse, "Trait `{$trait1}` cannot use `newModifier`");
|
|
}
|
|
/**
|
|
* 例如：
|
|
* use TraitA { TraitA::method as newMethod}
|
|
* 这表示 TraitA::method() 会被重命名为 TraitA::newMethod()
|
|
*/
|
|
$aliases[$this->getFullMethodName($trait1, $methodName)] = $adaptation->newName->toString();
|
|
}
|
|
if ($adaptation instanceof Node\Stmt\TraitUseAdaptation\Precedence) {
|
|
$methodName = $adaptation->method->toString();
|
|
/**
|
|
* 例如：
|
|
* use TraitA { TraitA::method insteadof TraitB}
|
|
* 这表示 TraitB::method() 将会被忽略，真正执行的是 TraitA::method()
|
|
*/
|
|
foreach($adaptation->insteadof as $trait2) {
|
|
$ignored[$this->getFullMethodName($trait2, $methodName)] = true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
protected function prepareTraitUse(Node\Stmt\TraitUse $v): void
|
|
{
|
|
$aliases = [];
|
|
$ignored = [];
|
|
if ($v->adaptations) {
|
|
$this->parseTraitUseOptions($v, $aliases, $ignored);
|
|
}
|
|
$this->classDef->traitAliases = array_merge($this->classDef->traitAliases, $aliases);
|
|
$this->classDef->traitIgnored = array_merge($this->classDef->traitIgnored, $ignored);
|
|
}
|
|
}
|
|
|