如何使用Psalm的UnusedMethod功能?

时间:2019-04-30 15:42:46

标签: php psalm-php

我正在尝试使用psalm static analysis tool for PHP。据我了解,该工具可以告诉我有关unused methods in my codebase的信息。但是,如果我创建一个简单的测试文件

#File: src/test.php
<?php
class A {
    private function foo() : void {}
}

new A();

然后运行psalm

$ ./vendor/bin/psalm --find-dead-code src/test.php 
Scanning files...
Analyzing files...

------------------------------
No errors found!
------------------------------

Checks took 0.16 seconds and used 32.694MB of memory
Psalm was able to infer types for 100% of the codebase

psalter

$ ./vendor/bin/psalter --find-unused-code --dry-run --issues=UnusedMethod src/test.php 
Scanning files...
Analyzing files...

------------------------------
No errors found!
------------------------------

Checks took 0.05 seconds and used 29.214MB of memory
Psalm was able to infer types for 100% of the codebase

没有发现错误。

为什么诗篇找不到未使用的方法foo?是否需要其他配置?还是我误会了这个工具的作用?我的psalm.xml文件在下面。

<?xml version="1.0"?>
<psalm
    totallyTyped="false"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="https://getpsalm.org/schema/config"
    xsi:schemaLocation="https://getpsalm.org/schema/config vendor/vimeo/psalm/config.xsd"
>
    <projectFiles>
        <directory name="src" />
        <ignoreFiles>
            <directory name="vendor" />
        </ignoreFiles>
    </projectFiles>

    <issueHandlers>
        <LessSpecificReturnType errorLevel="info" />

        <!-- level 3 issues - slightly lazy code writing, but provably low false-negatives -->

        <DeprecatedMethod errorLevel="info" />
        <DeprecatedProperty errorLevel="info" />
        <DeprecatedClass errorLevel="info" />
        <DeprecatedConstant errorLevel="info" />
        <DeprecatedInterface errorLevel="info" />
        <DeprecatedTrait errorLevel="info" />

        <InternalMethod errorLevel="info" />
        <InternalProperty errorLevel="info" />
        <InternalClass errorLevel="info" />

        <MissingClosureReturnType errorLevel="info" />
        <MissingReturnType errorLevel="info" />
        <MissingPropertyType errorLevel="info" />
        <InvalidDocblock errorLevel="info" />
        <MisplacedRequiredParam errorLevel="info" />

        <PropertyNotSetInConstructor errorLevel="info" />
        <MissingConstructor errorLevel="info" />
        <MissingClosureParamType errorLevel="info" />
        <MissingParamType errorLevel="info" />

        <RedundantCondition errorLevel="info" />

        <DocblockTypeContradiction errorLevel="info" />
        <RedundantConditionGivenDocblockType errorLevel="info" />

        <UnresolvableInclude errorLevel="info" />

        <RawObjectIteration errorLevel="info" />

        <InvalidStringClass errorLevel="info" />

        <UnusedMethod errorLevel="info" />
    </issueHandlers>
</psalm>

2 个答案:

答案 0 :(得分:4)

此处的诗篇创建者-死代码检测仅在分析整个项目时才检测未使用的类和方法-例如./vendor/bin/psalm --find-dead-code,省略src/test.php

虽然私有方法和属性是一种特殊情况(可以在不检查整个项目的情况下推断出它们的未使用状态),但对于公共/受保护的方法和属性,则必须消耗所有内容。

答案 1 :(得分:1)

According to the documentation,您将希望使用--find-dead-code的{​​{1}}参数:

psalm

输出:

./vendor/bin/psalm --find-dead-code foo.php