feat(javac): Add java_javac_sourcepath variable

ale_linters/java/javac.vim

@@ -6,6 +6,7 @@ let s:classpath_sep = has('unix') ? ':' : ';'
 call ale#Set('java_javac_executable', 'javac')
 call ale#Set('java_javac_options', '')
 call ale#Set('java_javac_classpath', '')
+call ale#Set('java_javac_sourcepath', '')
 
 function! ale_linters#java#javac#RunWithImportPaths(buffer) abort
     let l:command = ''
@@ -40,10 +41,15 @@ endfunction
 function! s:BuildClassPathOption(buffer, import_paths) abort
     " Filter out lines like [INFO], etc.
     let l:class_paths = filter(a:import_paths[:], 'v:val !~# ''[''')
-    call extend(
-    \   l:class_paths,
-    \   split(ale#Var(a:buffer, 'java_javac_classpath'), s:classpath_sep),
-    \)
+    let l:cls_path = ale#Var(a:buffer, 'java_javac_classpath')
+
+    if !empty(l:cls_path) && type(l:cls_path) is v:t_string
+        call extend(l:class_paths, split(l:cls_path, s:classpath_sep))
+    endif
+
+    if !empty(l:cls_path) && type(l:cls_path) is v:t_list
+        call extend(l:class_paths, l:cls_path)
+    endif
 
     return !empty(l:class_paths)
     \   ? '-cp ' . ale#Escape(join(l:class_paths, s:classpath_sep))
@@ -79,6 +85,27 @@ function! ale_linters#java#javac#GetCommand(buffer, import_paths, meta) abort
         endif
     endif
 
+    let l:source_paths = []
+    let l:source_path = ale#Var(a:buffer, 'java_javac_sourcepath')
+
+    if !empty(l:source_path) && type(l:source_path) is v:t_string
+        let l:source_paths = split(l:source_path, s:classpath_sep)
+    endif
+
+    if !empty(l:source_path) && type(l:source_path) is v:t_list
+        let l:source_paths = l:source_path
+    endif
+
+    if !empty(l:source_paths)
+        for l:path in l:source_paths
+            let l:sp_path = ale#path#FindNearestDirectory(a:buffer, l:path)
+
+            if !empty(l:sp_path)
+                call add(l:sp_dirs, l:sp_path)
+            endif
+        endfor
+    endif
+
     if !empty(l:sp_dirs)
         let l:sp_option = '-sourcepath '
         \   . ale#Escape(join(l:sp_dirs, s:classpath_sep))

doc/ale-java.txt

@@ -46,7 +46,7 @@ javac                                                          *ale-java-javac*
 
 g:ale_java_javac_classpath                         *g:ale_java_javac_classpath*
                                                    *b:ale_java_javac_classpath*
-  Type: |String|
+  Type: |String| or |List|
   Default: `''`
 
   This variable can be set to change the global classpath for Java.
@@ -67,6 +67,30 @@ g:ale_java_javac_options                             *g:ale_java_javac_options*
 
   This variable can be set to pass additional options to javac.
 
+g:ale_java_javac_sourcepath                       *g:ale_java_javac_sourcepath*
+                                                  *b:ale_java_javac_sourcepath*
+  Type: |String| or |List|
+  Default: `''`
+
+This variable can set multiple source code paths, the source code path is a
+relative path (relative to the project root directory).
+
+Example:
+
+String type:
+Note that the unix system separator is a colon(`:`) window system
+is a semicolon(`;`).
+>
+  let g:ale_java_javac_sourcepath = 'build/gen/source/xx/main:build/gen/source'
+<
+List type:
+>
+  let g:ale_java_javac_sourcepath = [
+    \ 'build/generated/source/querydsl/main',
+    \ 'target/generated-sources/source/querydsl/main'
+  \ ]
+<
+
 
 ===============================================================================
 google-java-format                                *ale-java-google-java-format*

test/command_callback/test_javac_command_callback.vader

@@ -31,14 +31,22 @@ After:
 Execute(The javac callback should return the correct default value):
   AssertLinter 'javac', g:prefix . ' -d ' . ale#Escape('TEMP_DIR') . ' %t'
 
-Execute(The javac callback should use g:ale_java_javac_classpath correctly):
+Execute(The javac callback should use string type g:ale_java_javac_classpath correctly):
   let g:ale_java_javac_classpath = 'foo.jar'
 
   AssertLinter 'javac',
   \ g:prefix
   \   . ' -cp ' . ale#Escape('foo.jar')
   \   . ' -d ' . ale#Escape('TEMP_DIR') . ' %t'
 
+Execute(The javac callback should use list type g:ale_java_javac_classpath correctly):
+  let g:ale_java_javac_classpath = ['foo.jar']
+
+  AssertLinter 'javac',
+  \ g:prefix
+  \   . ' -cp ' . ale#Escape('foo.jar')
+  \   . ' -d ' . ale#Escape('TEMP_DIR') . ' %t'
+
 Execute(The executable should be configurable):
   let g:ale_java_javac_executable = 'foobar'
 
@@ -108,6 +116,137 @@ Execute(The javac callback should combine discovered classpaths and manual ones)
   \   . ' -d ' . ale#Escape('TEMP_DIR') . ' %t',
   \ substitute(b:command, '%e', '\=ale#Escape(''javac'')', 'g')
 
+  let g:ale_java_javac_classpath = ['configured.jar']
+  let b:command = ale_linters#java#javac#GetCommand(bufnr(''), [
+  \ '[DEBUG] Ignore this.',
+  \ '[INFO] Something we should ignore.',
+  \ '/foo/bar.jar',
+  \ '/xyz/abc.jar',
+  \], {})
+
+  AssertEqual
+  \ g:prefix
+  \   . ' -cp '
+  \   . ale#Escape(join(
+  \     [
+  \       '/foo/bar.jar',
+  \       '/xyz/abc.jar',
+  \       'configured.jar',
+  \     ],
+  \     g:cp_sep
+  \   ))
+  \   . ' -d ' . ale#Escape('TEMP_DIR') . ' %t',
+  \ substitute(b:command, '%e', '\=ale#Escape(''javac'')', 'g')
+
+  let g:ale_java_javac_classpath = ['configured.jar', 'configured2.jar']
+  let b:command = ale_linters#java#javac#GetCommand(bufnr(''), [
+  \ '[DEBUG] Ignore this.',
+  \ '[INFO] Something we should ignore.',
+  \ '/foo/bar.jar',
+  \ '/xyz/abc.jar',
+  \], {})
+
+  AssertEqual
+  \ g:prefix
+  \   . ' -cp '
+  \   . ale#Escape(join(
+  \     [
+  \       '/foo/bar.jar',
+  \       '/xyz/abc.jar',
+  \       'configured.jar',
+  \       'configured2.jar',
+  \     ],
+  \     g:cp_sep
+  \   ))
+  \   . ' -d ' . ale#Escape('TEMP_DIR') . ' %t',
+  \ substitute(b:command, '%e', '\=ale#Escape(''javac'')', 'g')
+
+Execute(The javac callback should use string type g:ale_java_javac_sourcepath correctly):
+  let g:ale_java_javac_sourcepath = 'java_paths/build/gen/main'
+
+  AssertLinter 'javac',
+  \ g:prefix
+  \   . ' -sourcepath ' . ale#Escape(
+  \     ale#path#Simplify(g:dir . '/java_paths/build/gen/main/')
+  \   )
+  \   . ' -d ' . ale#Escape('TEMP_DIR') . ' %t'
+
+Execute(The javac callback should use list type g:ale_java_javac_sourcepath correctly):
+  let g:ale_java_javac_sourcepath = ['java_paths/build/gen/main']
+
+  AssertLinter 'javac',
+  \ g:prefix
+  \   . ' -sourcepath ' . ale#Escape(
+  \     ale#path#Simplify(g:dir . '/java_paths/build/gen/main/')
+  \   )
+  \   . ' -d ' . ale#Escape('TEMP_DIR') . ' %t'
+
+Execute(The javac callback shouldn't add -sourcepath when g:ale_java_javac_sourcepath variable path doesn't exist):
+  let g:ale_java_javac_sourcepath = 'java_paths/build/gen3/main'
+
+  AssertLinter 'javac',
+  \ g:prefix
+  \   . ' -d ' . ale#Escape('TEMP_DIR') . ' %t'
+
+Execute(The javac callback should combine discovered sourcepath and manual ones):
+  call ale#engine#Cleanup(bufnr(''))
+  call ale#test#SetFilename('java_paths/src/main/java/com/something/dummy.java')
+  call ale#engine#InitBufferInfo(bufnr(''))
+
+  let g:ale_java_javac_sourcepath = 'java_paths/build/gen/main'
+  let b:command = ale_linters#java#javac#GetCommand(bufnr(''), [], {})
+
+  AssertEqual
+  \ ale#path#CdString(expand('%:p:h')) . ale#Escape('javac') . ' -Xlint'
+  \   . ' -sourcepath ' . ale#Escape(join([
+  \     ale#path#Simplify(g:dir . '/java_paths/src/main/java/'),
+  \     ale#path#Simplify(g:dir . '/java_paths/build/gen/main/'),
+  \   ], g:cp_sep))
+  \   . ' -d ' . ale#Escape('TEMP_DIR') . ' %t',
+  \ substitute(b:command, '%e', '\=ale#Escape(''javac'')', 'g')
+
+  let g:ale_java_javac_sourcepath = 'java_paths/build/gen/main'
+  \ . g:cp_sep . 'java_paths/build/gen2/main'
+  let b:command = ale_linters#java#javac#GetCommand(bufnr(''), [], {})
+
+  AssertEqual
+  \ ale#path#CdString(expand('%:p:h')) . ale#Escape('javac') . ' -Xlint'
+  \   . ' -sourcepath ' . ale#Escape(join([
+  \     ale#path#Simplify(g:dir . '/java_paths/src/main/java/'),
+  \     ale#path#Simplify(g:dir . '/java_paths/build/gen/main/'),
+  \     ale#path#Simplify(g:dir . '/java_paths/build/gen2/main/')
+  \   ], g:cp_sep))
+  \   . ' -d ' . ale#Escape('TEMP_DIR') . ' %t',
+  \ substitute(b:command, '%e', '\=ale#Escape(''javac'')', 'g')
+
+  let g:ale_java_javac_sourcepath = ['java_paths/build/gen/main']
+  let b:command = ale_linters#java#javac#GetCommand(bufnr(''), [], {})
+
+  AssertEqual
+  \ ale#path#CdString(expand('%:p:h')) . ale#Escape('javac') . ' -Xlint'
+  \   . ' -sourcepath ' . ale#Escape(join([
+  \     ale#path#Simplify(g:dir . '/java_paths/src/main/java/'),
+  \     ale#path#Simplify(g:dir . '/java_paths/build/gen/main/')
+  \   ], g:cp_sep))
+  \   . ' -d ' . ale#Escape('TEMP_DIR') . ' %t',
+  \ substitute(b:command, '%e', '\=ale#Escape(''javac'')', 'g')
+
+  let g:ale_java_javac_sourcepath = [
+    \ 'java_paths/build/gen/main',
+    \ 'java_paths/build/gen2/main'
+  \ ]
+  let b:command = ale_linters#java#javac#GetCommand(bufnr(''), [], {})
+
+  AssertEqual
+  \ ale#path#CdString(expand('%:p:h')) . ale#Escape('javac') . ' -Xlint'
+  \   . ' -sourcepath ' . ale#Escape(join([
+  \     ale#path#Simplify(g:dir . '/java_paths/src/main/java/'),
+  \     ale#path#Simplify(g:dir . '/java_paths/build/gen/main/'),
+  \     ale#path#Simplify(g:dir . '/java_paths/build/gen2/main/')
+  \   ], g:cp_sep))
+  \   . ' -d ' . ale#Escape('TEMP_DIR') . ' %t',
+  \ substitute(b:command, '%e', '\=ale#Escape(''javac'')', 'g')
+
 Execute(The javac callback should detect source directories):
   call ale#engine#Cleanup(bufnr(''))
   noautocmd e! java_paths/src/main/java/com/something/dummy