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diff --git a/src/lint/linter/ArcanistExternalLinter.php b/src/lint/linter/ArcanistExternalLinter.php
--- a/src/lint/linter/ArcanistExternalLinter.php
+++ b/src/lint/linter/ArcanistExternalLinter.php
@@ -14,6 +14,7 @@
private $interpreter;
private $flags;
private $versionRequirement;
+ private $interpreterFlags;
/* -( Interpreters, Binaries and Flags )----------------------------------- */
@@ -197,6 +198,52 @@
return $this;
}
+ /**
+ * Return array of flags needed by the interpreter, such as "-jar" when
+ * using java as the interpreter. This method is only invoked if
+ * @{method:shouldUseInterpreter} has been overridden to return 'true'.
+ *
+ * @return array Flags to pass to interpreter
+ * @task bin
+ */
+ protected function getDefaultInterpreterFlags() {
+ return array();
+ }
+
+ /**
+ * Provide mandatory, non-overridable flags to the linter interpreter.
+ * Generally these are arguments to configure invocation of the interpreter
+ * such as (assuming Java interpreter) `-Xmx1024m`, `-Dproperty=value`, or
+ * in the case of the binary being a jar file, the last one should be `-jar`.
+ *
+ * Due to the specific case of using java as interpreter and a jarfile as
+ * the binary, the `-jar` argument must appear last in the list of all
+ * flags passed to interpreter. For this, manadatory flags are ensured to
+ * always be listed before any default or user overridden flags.
+ *
+ * Flags which are not mandatory should be provided in
+ * @{method:getDefaultInterpreterFlags} instead.
+ *
+ * @return list<string> Mandatory flags, like `"-jar"`.
+ * @task bin
+ */
+ protected function getMandatoryInterpreterFlags() {
+ return array();
+ }
+
+ /**
+ * Override default interpreter flags with custom flags. If not overridden,
+ * flags provided by @{method:getDefaultInterpreterFlags} are used.
+ *
+ * @param list<string> New flags for the interpreter.
+ * @return this
+ * @task bin
+ */
+ final public function setInterpreterFlags(array $interpreter_flags) {
+ $this->interpreterFlags = $interpreter_flags;
+ return $this;
+ }
+
/* -( Parsing Linter Output )---------------------------------------------- */
@@ -351,14 +398,20 @@
$this->checkBinaryConfiguration();
$interpreter = null;
+ $interpreter_flags = array();
if ($this->shouldUseInterpreter()) {
$interpreter = $this->getInterpreter();
+ $interpreter_flags = $this->getInterpreterFlags();
}
$binary = $this->getBinary();
if ($interpreter) {
- $bin = csprintf('%s %s', $interpreter, $binary);
+ if (!empty($interpreter_flags)) {
+ $bin = csprintf('%s %Ls %s', $interpreter, $interpreter_flags, $binary);
+ } else {
+ $bin = csprintf('%s %s', $interpreter, $binary);
+ }
} else {
$bin = csprintf('%s', $binary);
}
@@ -379,6 +432,23 @@
nonempty($this->flags, $this->getDefaultFlags()));
}
+ /**
+ * Get the composed flags for the interpreter, including both mandatory and
+ * configured flags.
+ *
+ * @return list<string> Composed interpreter flags.
+ * @task exec
+ */
+ final protected function getInterpreterFlags() {
+ // Note that this forces the mandatory flags to appear before any other
+ // flags provided through default or overridden. This is to handle the
+ // the case of java interpreter needing to combine the `-jar` flag followed
+ // immediately by the binary which would be the jar file.
+ return array_merge(
+ nonempty($this->interpreterFlags, $this->getDefaultInterpreterFlags()),
+ $this->getMandatoryInterpreterFlags());
+ }
+
public function getCacheVersion() {
try {
$this->checkBinaryConfiguration();
@@ -495,6 +565,13 @@
'a list of possible interpreters, the first one that exists '.
'will be used.'),
);
+
+ $options['interpreter.flags'] = array(
+ 'type' => 'optional list<string>',
+ 'help' => pht(
+ 'Provide a list of additional flags to pass to the interpreter on '.
+ 'the command line.'),
+ );
}
return $options + parent::getLinterConfigurationOptions();
@@ -545,6 +622,9 @@
case 'flags':
$this->setFlags($value);
return;
+ case 'interpreter.flags':
+ $this->setInterpreterFlags($value);
+ return;
case 'version':
$this->setVersionRequirement($value);
return;

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