public function process(XHPASTNode $root)
{
$all_paren_groups = $root->selectDescendantsOfTypes(array('n_ARRAY_VALUE_LIST', 'n_ASSIGNMENT_LIST', 'n_CALL_PARAMETER_LIST', 'n_DECLARATION_PARAMETER_LIST', 'n_CONTROL_CONDITION', 'n_FOR_EXPRESSION', 'n_FOREACH_EXPRESSION'));
foreach ($all_paren_groups as $group) {
$tokens = $group->getTokens();
$token_o = array_shift($tokens);
$token_c = array_pop($tokens);
$nonsem_o = $token_o->getNonsemanticTokensAfter();
$nonsem_c = $token_c->getNonsemanticTokensBefore();
if (!$nonsem_o) {
continue;
}
$raise = array();
$string_o = implode('', mpull($nonsem_o, 'getValue'));
if (preg_match('/^[ ]+$/', $string_o)) {
$raise[] = array($nonsem_o, $string_o);
}
if ($nonsem_o !== $nonsem_c) {
$string_c = implode('', mpull($nonsem_c, 'getValue'));
if (preg_match('/^[ ]+$/', $string_c)) {
$raise[] = array($nonsem_c, $string_c);
}
}
foreach ($raise as $warning) {
list($tokens, $string) = $warning;
$this->raiseLintAtOffset(reset($tokens)->getOffset(), pht('Parentheses should hug their contents.'), $string, '');
}
}
}
public function process(XHPASTNode $root)
{
$parser = new PhutilDocblockParser();
$classes = $root->selectDescendantsOfType('n_CLASS_DECLARATION');
foreach ($classes as $class) {
$is_final = false;
$is_abstract = false;
$is_concrete_extensible = false;
$attributes = $class->getChildOfType(0, 'n_CLASS_ATTRIBUTES');
foreach ($attributes->getChildren() as $child) {
if ($child->getConcreteString() == 'final') {
$is_final = true;
}
if ($child->getConcreteString() == 'abstract') {
$is_abstract = true;
}
}
$docblock = $class->getDocblockToken();
if ($docblock) {
list($text, $specials) = $parser->parse($docblock->getValue());
$is_concrete_extensible = idx($specials, 'concrete-extensible');
}
if (!$is_final && !$is_abstract && !$is_concrete_extensible) {
$this->raiseLintAtNode($class->getChildOfType(1, 'n_CLASS_NAME'), pht('This class is neither `%s` nor `%s`, and does not have ' . 'a docblock marking it `%s`.', 'final', 'abstract', '@concrete-extensible'));
}
}
}
public function process(XHPASTNode $root)
{
$expressions = $root->selectDescendantsOfType('n_BINARY_EXPRESSION');
static $operators = array('-' => true, '/' => true, '-=' => true, '/=' => true, '<=' => true, '<' => true, '==' => true, '===' => true, '!=' => true, '!==' => true, '>=' => true, '>' => true);
static $logical = array('||' => true, '&&' => true);
foreach ($expressions as $expr) {
$operator = $expr->getChildByIndex(1)->getConcreteString();
if (!empty($operators[$operator])) {
$left = $expr->getChildByIndex(0)->getSemanticString();
$right = $expr->getChildByIndex(2)->getSemanticString();
if ($left === $right) {
$this->raiseLintAtNode($expr, pht('Both sides of this expression are identical, so it always ' . 'evaluates to a constant.'));
}
}
if (!empty($logical[$operator])) {
$left = $expr->getChildByIndex(0)->getSemanticString();
$right = $expr->getChildByIndex(2)->getSemanticString();
// NOTE: These will be null to indicate "could not evaluate".
$left = $this->evaluateStaticBoolean($left);
$right = $this->evaluateStaticBoolean($right);
if ($operator === '||' && ($left === true || $right === true) || $operator === '&&' && ($left === false || $right === false)) {
$this->raiseLintAtNode($expr, pht('The logical value of this expression is static. ' . 'Did you forget to remove some debugging code?'));
}
}
}
}
public function process(XHPASTNode $root)
{
$nodes = $root->selectDescendantsOfType('n_GLOBAL_DECLARATION_LIST');
foreach ($nodes as $node) {
$this->raiseLintAtNode($node, pht('Limit the use of global variables. Global variables are ' . 'generally a bad idea and should be avoided when possible.'));
}
}
private function lintStrposUsedForStart(XHPASTNode $root)
{
$expressions = $root->selectDescendantsOfType('n_BINARY_EXPRESSION');
foreach ($expressions as $expression) {
$operator = $expression->getChildOfType(1, 'n_OPERATOR');
$operator = $operator->getConcreteString();
if ($operator !== '===' && $operator !== '!==') {
continue;
}
$zero = $expression->getChildByIndex(0);
if ($zero->getTypeName() === 'n_NUMERIC_SCALAR' && $zero->getConcreteString() === '0') {
$strpos = $expression->getChildByIndex(2);
} else {
$strpos = $zero;
$zero = $expression->getChildByIndex(2);
if ($zero->getTypeName() !== 'n_NUMERIC_SCALAR' || $zero->getConcreteString() !== '0') {
continue;
}
}
if ($strpos->getTypeName() !== 'n_FUNCTION_CALL') {
continue;
}
$name = strtolower($strpos->getChildByIndex(0)->getConcreteString());
if ($name === 'strpos') {
$this->raiseLintAtNode($strpos, pht('Use %s for checking if the string starts with something.', 'strncmp()'));
} else {
if ($name === 'stripos') {
$this->raiseLintAtNode($strpos, pht('Use %s for checking if the string starts with something.', 'strncasecmp()'));
}
}
}
}
public function process(XHPASTNode $root)
{
$tokens = $root->selectTokensOfType('T_ELSEIF');
foreach ($tokens as $token) {
$this->raiseLintAtToken($token, pht('Usage of `%s` is preferred over `%s`.', 'else if', 'elseif'), 'else if');
}
}
public function process(XHPASTNode $root)
{
$keywords = $root->selectTokensOfTypes(array('T_REQUIRE_ONCE', 'T_REQUIRE', 'T_EVAL', 'T_INCLUDE_ONCE', 'T_INCLUDE', 'T_LOGICAL_OR', 'T_LOGICAL_XOR', 'T_LOGICAL_AND', 'T_PRINT', 'T_INSTANCEOF', 'T_CLONE', 'T_NEW', 'T_EXIT', 'T_IF', 'T_ELSEIF', 'T_ELSE', 'T_ENDIF', 'T_ECHO', 'T_DO', 'T_WHILE', 'T_ENDWHILE', 'T_FOR', 'T_ENDFOR', 'T_FOREACH', 'T_ENDFOREACH', 'T_DECLARE', 'T_ENDDECLARE', 'T_AS', 'T_SWITCH', 'T_ENDSWITCH', 'T_CASE', 'T_DEFAULT', 'T_BREAK', 'T_CONTINUE', 'T_GOTO', 'T_FUNCTION', 'T_CONST', 'T_RETURN', 'T_TRY', 'T_CATCH', 'T_THROW', 'T_USE', 'T_GLOBAL', 'T_PUBLIC', 'T_PROTECTED', 'T_PRIVATE', 'T_FINAL', 'T_ABSTRACT', 'T_STATIC', 'T_VAR', 'T_UNSET', 'T_ISSET', 'T_EMPTY', 'T_HALT_COMPILER', 'T_CLASS', 'T_INTERFACE', 'T_EXTENDS', 'T_IMPLEMENTS', 'T_LIST', 'T_ARRAY', 'T_NAMESPACE', 'T_INSTEADOF', 'T_CALLABLE', 'T_TRAIT', 'T_YIELD', 'T_FINALLY'));
foreach ($keywords as $keyword) {
$value = $keyword->getValue();
if ($value != strtolower($value)) {
$this->raiseLintAtToken($keyword, pht('Convention: spell keyword `%s` as `%s`.', $value, strtolower($value)), strtolower($value));
}
}
$symbols = $root->selectDescendantsOfType('n_SYMBOL_NAME');
foreach ($symbols as $symbol) {
static $interesting_symbols = array('false' => true, 'null' => true, 'true' => true);
$symbol_name = $symbol->getConcreteString();
if ($symbol->getParentNode()->getTypeName() == 'n_FUNCTION_CALL') {
continue;
}
if (idx($interesting_symbols, strtolower($symbol_name))) {
if ($symbol_name != strtolower($symbol_name)) {
$this->raiseLintAtNode($symbol, pht('Convention: spell keyword `%s` as `%s`.', $symbol_name, strtolower($symbol_name)), strtolower($symbol_name));
}
}
}
$magic_constants = $root->selectTokensOfTypes(array('T_CLASS_C', 'T_METHOD_C', 'T_FUNC_C', 'T_LINE', 'T_FILE', 'T_NS_C', 'T_DIR', 'T_TRAIT_C'));
foreach ($magic_constants as $magic_constant) {
$value = $magic_constant->getValue();
if ($value != strtoupper($value)) {
$this->raiseLintAtToken($magic_constant, pht('Magic constants should be uppercase.'), strtoupper($value));
}
}
}
public function process(XHPASTNode $root)
{
static $functions = array('fprintf' => 1, 'printf' => 0, 'sprintf' => 0, 'vfprintf' => 1, 'csprintf' => 0, 'execx' => 0, 'exec_manual' => 0, 'hgsprintf' => 0, 'hsprintf' => 0, 'jsprintf' => 0, 'pht' => 0, 'phutil_passthru' => 0, 'qsprintf' => 1, 'queryfx' => 1, 'queryfx_all' => 1, 'queryfx_one' => 1, 'vcsprintf' => 0, 'vqsprintf' => 1);
$function_calls = $root->selectDescendantsOfType('n_FUNCTION_CALL');
foreach ($function_calls as $call) {
$name = $call->getChildByIndex(0)->getConcreteString();
$name = strtolower($name);
$start = idx($functions + $this->printfFunctions, $name);
if ($start === null) {
continue;
}
$parameters = $call->getChildOfType(1, 'n_CALL_PARAMETER_LIST');
$argc = count($parameters->getChildren()) - $start;
if ($argc < 1) {
$this->raiseLintAtNode($call, pht('This function is expected to have a format string.'));
continue;
}
$format = $parameters->getChildByIndex($start);
if ($format->getTypeName() != 'n_STRING_SCALAR') {
continue;
}
$argv = array($format->evalStatic()) + array_fill(0, $argc, null);
try {
xsprintf(null, null, $argv);
} catch (BadFunctionCallException $ex) {
$this->raiseLintAtNode($call, str_replace('xsprintf', $name, $ex->getMessage()));
} catch (InvalidArgumentException $ex) {
// Ignore.
}
}
}
public function process(XHPASTNode $root)
{
$calls = $root->selectDescendantsOfTypes(array('n_FUNCTION_CALL', 'n_METHOD_CALL'));
foreach ($calls as $call) {
$params = $call->getChildOfType(1, 'n_CALL_PARAMETER_LIST');
$tokens = $params->getTokens();
$first = head($tokens);
$leading = $first->getNonsemanticTokensBefore();
$leading_text = implode('', mpull($leading, 'getValue'));
if (preg_match('/^\\s+$/', $leading_text)) {
$this->raiseLintAtOffset($first->getOffset() - strlen($leading_text), pht('Convention: no spaces before opening parenthesis in calls.'), $leading_text, '');
}
}
foreach ($calls as $call) {
// If the last parameter of a call is a HEREDOC, don't apply this rule.
$params = $call->getChildOfType(1, 'n_CALL_PARAMETER_LIST')->getChildren();
if ($params) {
$last_param = last($params);
if ($last_param->getTypeName() === 'n_HEREDOC') {
continue;
}
}
$tokens = $call->getTokens();
$last = array_pop($tokens);
$trailing = $last->getNonsemanticTokensBefore();
$trailing_text = implode('', mpull($trailing, 'getValue'));
if (preg_match('/^\\s+$/', $trailing_text)) {
$this->raiseLintAtOffset($last->getOffset() - strlen($trailing_text), pht('Convention: no spaces before closing parenthesis in calls.'), $trailing_text, '');
}
}
}
public function process(XHPASTNode $root)
{
$classes = $root->selectDescendantsOfType('n_CLASS_DECLARATION');
foreach ($classes as $class) {
$attributes = $class->getChildOfType(0, 'n_CLASS_ATTRIBUTES');
$is_final = false;
foreach ($attributes->getChildren() as $attribute) {
if ($attribute->getConcreteString() == 'final') {
$is_final = true;
break;
}
}
if (!$is_final) {
continue;
}
$methods = $class->selectDescendantsOfType('n_METHOD_DECLARATION');
foreach ($methods as $method) {
$attributes = $method->getChildOfType(0, 'n_METHOD_MODIFIER_LIST');
foreach ($attributes->getChildren() as $attribute) {
if ($attribute->getConcreteString() == 'final') {
$this->raiseLintAtNode($attribute, pht('Unnecessary %s modifier in %s class.', 'final', 'final'));
}
}
}
}
}
public function process(XHPASTNode $root)
{
$arrays = $root->selectDescendantsOfType('n_ARRAY_LITERAL');
foreach ($arrays as $array) {
$array_values = $array->getChildOfType(0, 'n_ARRAY_VALUE_LIST')->getChildrenOfType('n_ARRAY_VALUE');
if (!$array_values) {
// There is no need to check an empty array.
continue;
}
$multiline = $array->getLineNumber() != $array->getEndLineNumber();
if (!$multiline) {
continue;
}
foreach ($array_values as $value) {
list($before, $after) = $value->getSurroundingNonsemanticTokens();
if (strpos(implode('', mpull($before, 'getValue')), "\n") === false) {
if (last($before) && last($before)->isAnyWhitespace()) {
$token = last($before);
$replacement = "\n" . $value->getIndentation();
} else {
$token = head($value->getTokens());
$replacement = "\n" . $value->getIndentation() . $token->getValue();
}
$this->raiseLintAtToken($token, pht('Array elements should each occupy a single line.'), $replacement);
}
}
}
}
public function process(XHPASTNode $root)
{
$index_accesses = $root->selectDescendantsOfType('n_INDEX_ACCESS');
foreach ($index_accesses as $index_access) {
$tokens = $index_access->getChildByIndex(1)->getTokens();
if (!$tokens) {
continue;
}
$left_brace = head($tokens)->getPrevToken();
while (!$left_brace->isSemantic()) {
$left_brace = $left_brace->getPrevToken();
}
$right_brace = last($tokens)->getNextToken();
while (!$right_brace->isSemantic()) {
$right_brace = $right_brace->getNextToken();
}
if ($left_brace->getValue() == '{' || $right_brace->getValue() == '}') {
$replacement = null;
foreach ($index_access->getTokens() as $token) {
if ($token === $left_brace) {
$replacement .= '[';
} else {
if ($token === $right_brace) {
$replacement .= ']';
} else {
$replacement .= $token->getValue();
}
}
}
$this->raiseLintAtNode($index_access, pht('Use `%s` instead of `%s`.', "\$x['key']", "\$x{'key'}"), $replacement);
}
}
}
public function process(XHPASTNode $root)
{
$classes = $root->selectDescendantsOfType('n_CLASS_DECLARATION');
foreach ($classes as $class) {
$methods = $class->selectDescendantsOfType('n_METHOD_DECLARATION');
foreach ($methods as $method) {
$attributes = $method->getChildByIndex(0, 'n_METHOD_MODIFIER_LIST')->selectDescendantsOfType('n_STRING');
$method_is_static = false;
$method_is_abstract = false;
foreach ($attributes as $attribute) {
if (strtolower($attribute->getConcreteString()) === 'static') {
$method_is_static = true;
}
if (strtolower($attribute->getConcreteString()) === 'abstract') {
$method_is_abstract = true;
}
}
if ($method_is_abstract) {
continue;
}
if (!$method_is_static) {
continue;
}
$body = $method->getChildOfType(5, 'n_STATEMENT_LIST');
$variables = $body->selectDescendantsOfType('n_VARIABLE');
foreach ($variables as $variable) {
if ($method_is_static && strtolower($variable->getConcreteString()) === '$this') {
$this->raiseLintAtNode($variable, pht('You can not reference `%s` inside a static method.', '$this'));
}
}
}
}
}
public function process(XHPASTNode $root)
{
$vvars = $root->selectDescendantsOfType('n_VARIABLE_VARIABLE');
foreach ($vvars as $vvar) {
$this->raiseLintAtNode($vvar, pht('Rewrite this code to use an array. Variable variables are unclear ' . 'and hinder static analysis.'));
}
}
public function process(XHPASTNode $root)
{
$class_declarations = $root->selectDescendantsOfType('n_CLASS_DECLARATION');
foreach ($class_declarations as $class_declaration) {
$class_name = $class_declaration->getChildOfType(1, 'n_CLASS_NAME')->getConcreteString();
$class_static_accesses = $class_declaration->selectDescendantsOfType('n_CLASS_STATIC_ACCESS');
$closures = $this->getAnonymousClosures($class_declaration);
foreach ($class_static_accesses as $class_static_access) {
$class_ref = $class_static_access->getChildByIndex(0);
if ($class_ref->getTypeName() != 'n_CLASS_NAME') {
continue;
}
$class_ref_name = $class_ref->getConcreteString();
if (strtolower($class_name) == strtolower($class_ref_name)) {
$in_closure = false;
foreach ($closures as $closure) {
if ($class_ref->isDescendantOf($closure)) {
$in_closure = true;
break;
}
}
if (version_compare($this->version, '5.4.0', '>=') || !$in_closure) {
$this->raiseLintAtNode($class_ref, pht('Use `%s` for local static member references.', 'self::'), 'self');
}
}
}
}
}
public function process(XHPASTNode $root)
{
foreach ($root->selectDescendantsOfType('n_STATEMENT_LIST') as $list) {
$tokens = $list->getTokens();
if (!$tokens || head($tokens)->getValue() != '{') {
continue;
}
list($before, $after) = $list->getSurroundingNonsemanticTokens();
if (!$before) {
$first = head($tokens);
// Only insert the space if we're after a closing parenthesis. If
// we're in a construct like "else{}", other rules will insert space
// after the 'else' correctly.
$prev = $first->getPrevToken();
if (!$prev || $prev->getValue() !== ')') {
continue;
}
$this->raiseLintAtToken($first, pht('Put opening braces on the same line as control statements and ' . 'declarations, with a single space before them.'), ' ' . $first->getValue());
} else {
if (count($before) === 1) {
$before = reset($before);
if ($before->getValue() !== ' ') {
$this->raiseLintAtToken($before, pht('Put opening braces on the same line as control statements and ' . 'declarations, with a single space before them.'), ' ');
}
}
}
}
$nodes = $root->selectDescendantsOfType('n_STATEMENT');
foreach ($nodes as $node) {
$parent = $node->getParentNode();
if (!$parent) {
continue;
}
$type = $parent->getTypeName();
if ($type != 'n_STATEMENT_LIST' && $type != 'n_DECLARE') {
$this->raiseLintAtNode($node, pht('Use braces to surround a statement block.'));
}
}
$nodes = $root->selectDescendantsOfTypes(array('n_DO_WHILE', 'n_ELSE', 'n_ELSEIF'));
foreach ($nodes as $list) {
$tokens = $list->getTokens();
if (!$tokens || last($tokens)->getValue() != '}') {
continue;
}
list($before, $after) = $list->getSurroundingNonsemanticTokens();
if (!$before) {
$first = last($tokens);
$this->raiseLintAtToken($first, pht('Put opening braces on the same line as control statements and ' . 'declarations, with a single space before them.'), ' ' . $first->getValue());
} else {
if (count($before) === 1) {
$before = reset($before);
if ($before->getValue() !== ' ') {
$this->raiseLintAtToken($before, pht('Put opening braces on the same line as control statements and ' . 'declarations, with a single space before them.'), ' ');
}
}
}
}
}
public function process(XHPASTNode $root)
{
$methods = $root->selectDescendantsOfType('n_METHOD_DECLARATION');
foreach ($methods as $method) {
$method_name = $method->getChildOfType(2, 'n_STRING')->getConcreteString();
$parameter_list = $method->getChildOfType(3, 'n_DECLARATION_PARAMETER_LIST');
$parameters = array();
foreach ($parameter_list->getChildren() as $parameter) {
$default = $parameter->getChildByIndex(2);
$parameter = $parameter->getChildByIndex(1);
if ($parameter->getTypeName() == 'n_VARIABLE_REFERENCE') {
$parameter = $parameter->getChildOfType(0, 'n_VARIABLE');
}
if ($default->getTypeName() != 'n_EMPTY') {
continue 2;
}
$parameters[] = $parameter->getConcreteString();
}
$statements = $method->getChildByIndex(6);
if ($statements->getTypeName() != 'n_STATEMENT_LIST') {
continue;
}
if (count($statements->getChildren()) != 1) {
continue;
}
$statement = $statements->getChildOfType(0, 'n_STATEMENT')->getChildByIndex(0);
if ($statement->getTypeName() == 'n_RETURN') {
$statement = $statement->getChildByIndex(0);
}
if ($statement->getTypeName() != 'n_FUNCTION_CALL') {
continue;
}
$function = $statement->getChildByIndex(0);
if ($function->getTypeName() != 'n_CLASS_STATIC_ACCESS') {
continue;
}
$called_class = $function->getChildOfType(0, 'n_CLASS_NAME');
$called_method = $function->getChildOfType(1, 'n_STRING');
if ($called_class->getConcreteString() != 'parent') {
continue;
} else {
if ($called_method->getConcreteString() != $method_name) {
continue;
}
}
$params = $statement->getChildOfType(1, 'n_CALL_PARAMETER_LIST')->getChildren();
foreach ($params as $param) {
if ($param->getTypeName() != 'n_VARIABLE') {
continue 2;
}
$expected = array_shift($parameters);
if ($param->getConcreteString() != $expected) {
continue 2;
}
}
$this->raiseLintAtNode($method, pht('Useless overriding method.'));
}
}
private function isInAnonymousFunction(XHPASTNode $node)
{
while ($node) {
if ($node->getTypeName() == 'n_FUNCTION_DECLARATION' && $node->getChildByIndex(2)->getTypeName() == 'n_EMPTY') {
return true;
}
$node = $node->getParentNode();
}
}
public function process(XHPASTNode $root)
{
$tokens = $root->getTokens();
foreach ($tokens as $token) {
if ($token->getTypeName() === 'T_OPEN_TAG_WITH_ECHO') {
$this->raiseLintAtToken($token, pht('Avoid the PHP echo short form, "%s".', '<?='));
}
}
}
public function process(XHPASTNode $root)
{
$nodes = $root->selectDescendantsOfType('n_CALL_PARAMETER_LIST');
foreach ($nodes as $node) {
$parameters = $node->getChildrenOfType('n_VARIABLE_REFERENCE');
foreach ($parameters as $parameter) {
$this->raiseLintAtNode($parameter, pht('Call-time pass-by-reference calls are prohibited.'));
}
}
}
public function process(XHPASTNode $root)
{
$tokens = $root->selectTokensOfType(';');
foreach ($tokens as $token) {
$prev = $token->getPrevToken();
if ($prev->isAnyWhitespace()) {
$this->raiseLintAtToken($prev, pht('Space found before semicolon.'), '');
}
}
}
public function process(XHPASTNode $root)
{
foreach ($root->selectTokensOfType('T_COMMENT') as $comment) {
$value = $comment->getValue();
if ($value[0] !== '#') {
continue;
}
$this->raiseLintAtOffset($comment->getOffset(), pht('Use `%s` single-line comments, not `%s`.', '//', '#'), '#', preg_match('/^#\\S/', $value) ? '// ' : '//');
}
}
public function process(XHPASTNode $root)
{
$members = $root->selectDescendantsOfType('n_CLASS_MEMBER_DECLARATION_LIST');
foreach ($members as $member) {
$modifiers = $this->getModifiers($member);
if (isset($modifiers['public'])) {
$this->raiseLintAtNode($member, pht('`%s` properties should be avoided. Instead of exposing ' . 'the property value directly, consider using getter ' . 'and setter methods.', 'public'));
}
}
}
public function process(XHPASTNode $root)
{
$inline_html = $root->selectDescendantsOfType('n_INLINE_HTML');
if ($inline_html) {
return;
}
foreach ($root->selectTokensOfType('T_CLOSE_TAG') as $token) {
$this->raiseLintAtToken($token, pht('Do not use the PHP closing tag, "%s".', '?>'));
}
}
public function process(XHPASTNode $root)
{
$namespaces = $root->selectDescendantsOfType('n_NAMESPACE');
foreach ($namespaces as $namespace) {
$nested_namespaces = $namespace->selectDescendantsOfType('n_NAMESPACE');
foreach ($nested_namespaces as $nested_namespace) {
$this->raiseLintAtNode($nested_namespace, pht('`%s` declarations cannot be nested. ' . 'This construct will cause a PHP fatal error.', 'namespace'));
}
}
}
public function process(XHPASTNode $root)
{
$logical_ands = $root->selectTokensOfType('T_LOGICAL_AND');
$logical_ors = $root->selectTokensOfType('T_LOGICAL_OR');
foreach ($logical_ands as $logical_and) {
$this->raiseLintAtToken($logical_and, pht('Use `%s` instead of `%s`.', '&&', 'and'), '&&');
}
foreach ($logical_ors as $logical_or) {
$this->raiseLintAtToken($logical_or, pht('Use `%s` instead of `%s`.', '||', 'or'), '||');
}
}
public function process(XHPASTNode $root)
{
$used_vars = array();
$for_loops = $root->selectDescendantsOfType('n_FOR');
foreach ($for_loops as $for_loop) {
$var_map = array();
// Find all the variables that are assigned to in the for() expression.
$for_expr = $for_loop->getChildOfType(0, 'n_FOR_EXPRESSION');
$bin_exprs = $for_expr->selectDescendantsOfType('n_BINARY_EXPRESSION');
foreach ($bin_exprs as $bin_expr) {
if ($bin_expr->getChildByIndex(1)->getConcreteString() === '=') {
$var = $bin_expr->getChildByIndex(0);
$var_map[$var->getConcreteString()] = $var;
}
}
$used_vars[$for_loop->getID()] = $var_map;
}
$foreach_loops = $root->selectDescendantsOfType('n_FOREACH');
foreach ($foreach_loops as $foreach_loop) {
$var_map = array();
$foreach_expr = $foreach_loop->getChildOfType(0, 'n_FOREACH_EXPRESSION');
// We might use one or two vars, i.e. "foreach ($x as $y => $z)" or
// "foreach ($x as $y)".
$possible_used_vars = array($foreach_expr->getChildByIndex(1), $foreach_expr->getChildByIndex(2));
foreach ($possible_used_vars as $var) {
if ($var->getTypeName() === 'n_EMPTY') {
continue;
}
$name = $var->getConcreteString();
$name = trim($name, '&');
// Get rid of ref silliness.
$var_map[$name] = $var;
}
$used_vars[$foreach_loop->getID()] = $var_map;
}
$all_loops = $for_loops->add($foreach_loops);
foreach ($all_loops as $loop) {
$child_loops = $loop->selectDescendantsOfTypes(array('n_FOR', 'n_FOREACH'));
$outer_vars = $used_vars[$loop->getID()];
foreach ($child_loops as $inner_loop) {
$inner_vars = $used_vars[$inner_loop->getID()];
$shared = array_intersect_key($outer_vars, $inner_vars);
if ($shared) {
$shared_desc = implode(', ', array_keys($shared));
$message = $this->raiseLintAtNode($inner_loop->getChildByIndex(0), pht('This loop reuses iterator variables (%s) from an ' . 'outer loop. You might be clobbering the outer iterator. ' . 'Change the inner loop to use a different iterator name.', $shared_desc));
$locations = array();
foreach ($shared as $var) {
$locations[] = $this->getOtherLocation($var->getOffset());
}
$message->setOtherLocations($locations);
}
}
}
}
public function process(XHPASTNode $root)
{
$nodes = $root->selectDescendantsOfType('n_NEW');
foreach ($nodes as $node) {
$class = $node->getChildByIndex(0);
$params = $node->getChildByIndex(1);
if ($params->getTypeName() == 'n_EMPTY') {
$this->raiseLintAtNode($class, pht('Use parentheses when invoking a constructor.'), $class->getConcreteString() . '()');
}
}
}
public function process(XHPASTNode $root)
{
$methods = $root->selectDescendantsOfType('n_METHOD_DECLARATION');
foreach ($methods as $method) {
$modifiers = $this->getModifiers($method);
$body = $method->getChildByIndex(6);
if (idx($modifiers, 'abstract') && $body->getTypeName() != 'n_EMPTY') {
$this->raiseLintAtNode($body, pht('`%s` methods cannot contain a body. This construct will ' . 'cause a fatal error.', 'abstract'));
}
}
}
public function process(XHPASTNode $root)
{
$references = $root->selectDescendantsOfType('n_VARIABLE_REFERENCE');
foreach ($references as $reference) {
$variable = $reference->getChildByIndex(0);
list($before, $after) = $variable->getSurroundingNonsemanticTokens();
if ($before) {
$this->raiseLintAtOffset(head($before)->getOffset(), pht('Variable references should not be prefixed with whitespace.'), implode('', mpull($before, 'getValue')), '');
}
}
}