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PMD is currently not working properly for Java classes that use [unnamed packages](https://docs.oracle.com/javase/specs/jls/se11/html/jls-7.html#jls-7.4.2). Consider the following Java class that does not contain a `package` declaration: ```java public class App { String getGreeting() { return "Hello world."; } static void main(String... args) { System.out.println(new App().getGreeting()); } } ``` Running PMD in the command line agaist the Java class above produces an output with empty string `""` in the `"Package"` column: ```sh $ pmd -R category/java/bestpractices.xml -f csv -d './src/main/java/App.java' Oct 02, 2018 9:10:39 PM net.sourceforge.pmd.PMD processFiles WARNING: This analysis could be faster, please consider using Incremental Analysis: https://pmd.github.io/pmd-6.7.0/pmd_userdocs_incremental_analysis.html "Problem","Package","File","Priority","Line","Description","Rule set","Rule" "1","","/Users/diego/Projects/github.com/dlresende/kata-fizz-buzz/src/main/java/App.java","2","7","System.out.println is used","Best Practices","SystemPrintln" ``` But the pmd.vim handler's current pattern refuses everything coming from a Java class that does not have a package name (2nd column): ```vim let l:pattern = '"\(\d\+\)",".\+","\(.\+\)","\(\d\+\)","\(\d\+\)","\(.\+\)","\(.\+\)","\(.\+\)"$' ``` The solution I am proposing is to also accept empty strings as package names.
37 lines
1.0 KiB
VimL
37 lines
1.0 KiB
VimL
" Author: Johannes Wienke <languitar@semipol.de>
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" Description: PMD for Java files
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function! ale_linters#java#pmd#Handle(buffer, lines) abort
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let l:pattern = '"\(\d\+\)",".*","\(.\+\)","\(\d\+\)","\(\d\+\)","\(.\+\)","\(.\+\)","\(.\+\)"$'
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let l:output = []
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for l:match in ale#util#GetMatches(a:lines, l:pattern)
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call add(l:output, {
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\ 'type': 'W',
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\ 'lnum': l:match[4] + 0,
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\ 'text': l:match[5],
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\ 'code': l:match[6] . ' - ' . l:match[7],
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\})
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endfor
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return l:output
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endfunction
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function! ale_linters#java#pmd#GetCommand(buffer) abort
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return 'pmd '
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\ . ale#Var(a:buffer, 'java_pmd_options')
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\ . ' -f csv'
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\ . ' -d %t'
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endfunction
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if !exists('g:ale_java_pmd_options')
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let g:ale_java_pmd_options = '-R category/java/bestpractices.xml'
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endif
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call ale#linter#Define('java', {
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\ 'name': 'pmd',
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\ 'executable': 'pmd',
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\ 'command_callback': 'ale_linters#java#pmd#GetCommand',
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\ 'callback': 'ale_linters#java#pmd#Handle',
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\})
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