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f288ee0e21
Test Plan: arc lint Reviewers: epriestley Reviewed By: epriestley CC: aran, Koolvin Differential Revision: https://secure.phabricator.com/D2609
409 lines
13 KiB
PHP
Executable file
409 lines
13 KiB
PHP
Executable file
#!/usr/bin/env php
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<?php
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/*
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* Copyright 2012 Facebook, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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$builtin_classes = get_declared_classes();
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$builtin_interfaces = get_declared_interfaces();
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$builtin_functions = get_defined_functions();
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$builtin_functions = $builtin_functions['internal'];
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$builtin = array(
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'class' => array_fill_keys($builtin_classes, true) + array(
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'PhutilBootloader' => true,
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),
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'function' => array_filter(
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array(
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'empty' => true,
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'isset' => true,
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'echo' => true,
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'print' => true,
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'exit' => true,
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'die' => true,
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// These are provided by libphutil but not visible in the map.
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'phutil_is_windows' => true,
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'phutil_load_library' => true,
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'phutil_is_hiphop_runtime' => true,
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// HPHP/i defines these functions as 'internal', but they are NOT
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// builtins and do not exist in vanilla PHP. Make sure we don't mark them
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// as builtin since we need to add dependencies for them.
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'idx' => false,
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'id' => false,
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) + array_fill_keys($builtin_functions, true)),
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'interface' => array_fill_keys($builtin_interfaces, true),
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);
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require_once dirname(__FILE__).'/__init_script__.php';
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if ($argc != 2) {
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$self = basename($argv[0]);
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echo "usage: {$self} <module>\n";
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exit(1);
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}
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phutil_require_module('phutil', 'filesystem');
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$dir = Filesystem::resolvePath($argv[1]);
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$data = array();
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$futures = array();
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foreach (Filesystem::listDirectory($dir, $hidden_files = false) as $file) {
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if (!preg_match('/.php$/', $file)) {
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continue;
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}
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$data[$file] = Filesystem::readFile($dir.'/'.$file);
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$futures[$file] = xhpast_get_parser_future($data[$file]);
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}
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$requirements = new PhutilModuleRequirements();
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$requirements->addBuiltins($builtin);
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$doc_parser = new PhutilDocblockParser();
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$has_init = false;
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$has_files = false;
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foreach (Futures($futures) as $file => $future) {
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try {
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$tree = XHPASTTree::newFromDataAndResolvedExecFuture(
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$data[$file],
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$future->resolve());
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} catch (XHPASTSyntaxErrorException $ex) {
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echo "Syntax Error! In '{$file}': ".$ex->getMessage()."\n";
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exit(1);
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}
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$root = $tree->getRootNode();
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$requirements->setCurrentFile($file);
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if ($file == '__init__.php') {
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$has_init = true;
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$calls = $root->selectDescendantsOfType('n_FUNCTION_CALL');
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foreach ($calls as $call) {
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$name = $call->getChildByIndex(0);
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$call_name = $name->getConcreteString();
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if ($call_name == 'phutil_require_source') {
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$params = $call->getChildByIndex(1)->getChildren();
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if (count($params) !== 1) {
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$requirements->addLint(
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$call,
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$call->getConcreteString(),
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ArcanistPhutilModuleLinter::LINT_ANALYZER_SIGNATURE,
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"Call to phutil_require_source() must have exactly one argument.");
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continue;
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}
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$param = reset($params);
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$value = $param->getStringLiteralValue();
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if ($value === null) {
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$requirements->addLint(
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$param,
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$param->getConcreteString(),
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ArcanistPhutilModuleLinter::LINT_ANALYZER_SIGNATURE,
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"phutil_require_source() parameter must be a string literal.");
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continue;
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}
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$requirements->addSourceDependency($name, $value);
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} else if ($call_name == 'phutil_require_module') {
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analyze_phutil_require_module($call, $requirements, true);
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}
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}
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} else {
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$has_files = true;
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$requirements->addSourceDeclaration(basename($file));
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// Find symbols declared as "@phutil-external-symbol function example",
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// and ignore these in building dependency lists.
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$externals = array();
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foreach ($root->getTokens() as $token) {
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if ($token->getTypeName() == 'T_DOC_COMMENT') {
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list($block, $special) = $doc_parser->parse($token->getValue());
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$ext_list = idx($special, 'phutil-external-symbol');
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$ext_list = explode("\n", $ext_list);
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$ext_list = array_filter($ext_list);
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foreach ($ext_list as $ext_ref) {
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$matches = null;
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if (preg_match('/^\s*(\S+)\s+(\S+)/', $ext_ref, $matches)) {
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$externals[$matches[1]][$matches[2]] = true;
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}
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}
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}
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}
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// Function uses:
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// - Explicit call
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// TODO?: String literal in ReflectionFunction().
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$calls = $root->selectDescendantsOfType('n_FUNCTION_CALL');
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foreach ($calls as $call) {
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$name = $call->getChildByIndex(0);
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if ($name->getTypeName() == 'n_VARIABLE' ||
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$name->getTypeName() == 'n_VARIABLE_VARIABLE') {
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$requirements->addLint(
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$name,
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$name->getConcreteString(),
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ArcanistPhutilModuleLinter::LINT_ANALYZER_DYNAMIC,
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"Use of variable function calls prevents dependencies from being ".
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"checked statically. This module may have undetectable errors.");
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continue;
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}
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if ($name->getTypeName() == 'n_CLASS_STATIC_ACCESS') {
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// We'll pick this up later.
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continue;
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}
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$call_name = $name->getConcreteString();
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if ($call_name == 'phutil_require_module') {
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analyze_phutil_require_module($call, $requirements, false);
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} else if ($call_name == 'call_user_func' ||
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$call_name == 'call_user_func_array') {
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$params = $call->getChildByIndex(1)->getChildren();
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if (count($params) == 0) {
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$requirements->addLint(
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$call,
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$call->getConcreteString(),
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ArcanistPhutilModuleLinter::LINT_ANALYZER_SIGNATURE,
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"Call to {$call_name}() must have at least one argument.");
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}
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$symbol = array_shift($params);
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$symbol_value = $symbol->getStringLiteralValue();
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if ($symbol_value) {
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$requirements->addFunctionDependency(
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$symbol,
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$symbol_value);
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} else {
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$requirements->addLint(
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$symbol,
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$symbol->getConcreteString(),
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ArcanistPhutilModuleLinter::LINT_ANALYZER_DYNAMIC,
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"Use of variable arguments to {$call_name} prevents dependencies ".
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"from being checked statically. This module may have undetectable ".
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"errors.");
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}
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} else if (empty($externals['function'][$name->getConcreteString()])) {
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$requirements->addFunctionDependency(
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$name,
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$name->getConcreteString());
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}
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}
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$functions = $root->selectDescendantsOfType('n_FUNCTION_DECLARATION');
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foreach ($functions as $function) {
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$name = $function->getChildByIndex(2);
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if ($name->getTypeName() == 'n_EMPTY') {
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// This is an anonymous function; don't record it into the symbol
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// index.
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} else {
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$requirements->addFunctionDeclaration(
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$name,
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$name->getConcreteString());
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}
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}
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// Class uses:
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// - new
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// - extends (in class declaration)
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// - Static method call
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// - Static property access
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// - Constant use
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// TODO?: String literal in ReflectionClass().
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// TODO?: String literal in array literal in call_user_func /
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// call_user_func_array().
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// TODO: Raise a soft warning for use of an unknown class in:
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// - Typehints
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// - instanceof
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// - catch
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$classes = $root->selectDescendantsOfType('n_CLASS_DECLARATION');
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foreach ($classes as $class) {
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$class_name = $class->getChildByIndex(1);
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$requirements->addClassDeclaration(
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$class_name,
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$class_name->getConcreteString());
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$extends = $class->getChildByIndex(2);
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foreach ($extends->selectDescendantsOfType('n_CLASS_NAME') as $parent) {
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if (empty($externals['class'][$parent->getConcreteString()])) {
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$requirements->addClassDependency(
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$class_name->getConcreteString(),
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$parent,
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$parent->getConcreteString());
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}
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}
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$implements = $class->getChildByIndex(3);
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$interfaces = $implements->selectDescendantsOfType('n_CLASS_NAME');
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foreach ($interfaces as $interface) {
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if (empty($externals['interface'][$interface->getConcreteString()])) {
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$requirements->addInterfaceDependency(
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$class_name->getConcreteString(),
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$interface,
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$interface->getConcreteString());
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}
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}
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}
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if (count($classes) > 1) {
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foreach ($classes as $class) {
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$class_name = $class->getChildByIndex(1);
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$class_string = $class_name->getConcreteString();
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$requirements->addLint(
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$class_name,
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$class_string,
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ArcanistPhutilModuleLinter::LINT_ANALYZER_MULTIPLE_CLASSES,
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"This file declares more than one class. Declare only one class per ".
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"file.");
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break;
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}
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}
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$uses_of_new = $root->selectDescendantsOfType('n_NEW');
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foreach ($uses_of_new as $new_operator) {
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$name = $new_operator->getChildByIndex(0);
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if ($name->getTypeName() == 'n_VARIABLE' ||
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$name->getTypeName() == 'n_VARIABLE_VARIABLE') {
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$requirements->addLint(
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$name,
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$name->getConcreteString(),
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ArcanistPhutilModuleLinter::LINT_ANALYZER_DYNAMIC,
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"Use of variable class instantiation prevents dependencies from ".
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"being checked statically. This module may have undetectable ".
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"errors.");
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continue;
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}
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if (empty($externals['class'][$name->getConcreteString()])) {
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$requirements->addClassDependency(
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null,
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$name,
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$name->getConcreteString());
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}
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}
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$static_uses = $root->selectDescendantsOfType('n_CLASS_STATIC_ACCESS');
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foreach ($static_uses as $static_use) {
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$name = $static_use->getChildByIndex(0);
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if ($name->getTypeName() != 'n_CLASS_NAME') {
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echo "WARNING UNLINTABLE\n";
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continue;
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}
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$name_concrete = $name->getConcreteString();
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$magic_names = array(
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'static' => true,
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'parent' => true,
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'self' => true,
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);
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if (isset($magic_names[$name_concrete])) {
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continue;
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}
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if (empty($externals['class'][$name_concrete])) {
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$requirements->addClassDependency(
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null,
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$name,
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$name_concrete);
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}
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}
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// Interface uses:
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// - implements
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// - extends (in interface declaration)
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$interfaces = $root->selectDescendantsOfType('n_INTERFACE_DECLARATION');
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foreach ($interfaces as $interface) {
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$interface_name = $interface->getChildByIndex(1);
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$requirements->addInterfaceDeclaration(
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$interface_name,
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$interface_name->getConcreteString());
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$extends = $interface->getChildByIndex(2);
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foreach ($extends->selectDescendantsOfType('n_CLASS_NAME') as $parent) {
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if (empty($externals['interface'][$parent->getConcreteString()])) {
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$requirements->addInterfaceDependency(
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$interface_name->getConcreteString(),
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$parent,
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$parent->getConcreteString());
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}
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}
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}
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}
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}
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if (!$has_init && $has_files) {
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$requirements->addRawLint(
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ArcanistPhutilModuleLinter::LINT_ANALYZER_NO_INIT,
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"Create an __init__.php file in this module.");
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}
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echo json_encode($requirements->toDictionary());
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/**
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* Parses meaning from calls to phutil_require_module() in __init__.php files.
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*
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* @group module
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*/
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function analyze_phutil_require_module(
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XHPASTNode $call,
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PhutilModuleRequirements $requirements,
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$create_dependency) {
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$name = $call->getChildByIndex(0);
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$params = $call->getChildByIndex(1)->getChildren();
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if (count($params) !== 2) {
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$requirements->addLint(
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$call,
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$call->getConcreteString(),
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ArcanistPhutilModuleLinter::LINT_ANALYZER_SIGNATURE,
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"Call to phutil_require_module() must have exactly two arguments.");
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return;
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}
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$module_param = array_pop($params);
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$library_param = array_pop($params);
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$library_value = $library_param->getStringLiteralValue();
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if ($library_value === null) {
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$requirements->addLint(
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$library_param,
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$library_param->getConcreteString(),
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ArcanistPhutilModuleLinter::LINT_ANALYZER_SIGNATURE,
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"phutil_require_module() parameters must be string literals.");
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return;
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}
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$module_value = $module_param->getStringLiteralValue();
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if ($module_value === null) {
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$requirements->addLint(
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$module_param,
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$module_param->getConcreteString(),
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ArcanistPhutilModuleLinter::LINT_ANALYZER_SIGNATURE,
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"phutil_require_module() parameters must be string literals.");
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return;
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}
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if ($create_dependency) {
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$requirements->addModuleDependency(
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$name,
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$library_value.':'.$module_value);
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}
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}
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