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<?php
require_once('JavaScriptFunction.php');
require_once('JavaScriptFunctionCall.php');
require_once('JavaScriptAssignment.php');
require_once('Destructable.php');
class JavaScriptStatements extends Destructable {
protected $statements;
protected $function_calls;
protected $function_assignments;
protected $prefixes = array();
public function __construct($statements) {
if (!is_array($statements)) {
$statements = array($statements);
}
$this->statements = $statements;
}
public function __destruct() {
$this->mem_flush('statements', 'function_calls', 'function_assignments', 'prefixes');
}
public function function_calls($global_scope = FALSE, $name = NULL) {
$calls = $this->function_calls = isset($this->function_calls) ? $this->function_calls : $this->resolve_something('resolve_function_calls');
if ($name) {
$names = array_slice(func_get_args(), 1);
$filtered = array();
foreach ($names as $name) {
foreach ($calls as $call) {
if ($call->name() == $name) {
$filtered[] = $call;
}
}
}
$calls = $filtered;
}
if ($global_scope) {
$filtered = array();
foreach ($calls as $call) {
if ($call->is_global()) {
$filtered[] = $call;
}
}
$calls = $filtered;
}
return $calls;
}
private function resolve_function_calls($statement, $parent) {
if (is_object($statement) && $statement->id == '(' && $statement->arity == 'binary' && (is_object($statement->first) && $statement->first->is_lookup())) {
$call = new JavaScriptFunctionCall($statement->first, $statement->second);
if ($parent->id == '=') {
$name = $parent->first;
while ($name) {
if ($name && $name->arity == 'name') {
if ($name->global_scope) {
$call->setAssignment($parent->first);
}
break;
}
$name = $name->first;
}
}
return $call;
}
}
public function assignments($global_scope=FALSE, $into_functions=TRUE) {
$assignments = $this->function_assignments = isset($this->function_assignments) ? $this->function_assignments : $this->resolve_something('resolve_assignments', array(), !$into_functions);
if ($global_scope) {
$filtered = array();
foreach ($assignments as $item) {
if ($item->is_global()) {
$filtered[] = $item;
}
}
$assignments = $filtered;
}
return $assignments;
}
private function resolve_assignments($statement, $parent) {
if ($statement->id == '=' && $statement->second) {
return new JavaScriptAssignment($statement->first, $statement->second);
}
}
public function prefix($prefix_name) {
return isset($this->prefixes[$prefix_name]) ? $this->prefixes[$prefix_name] : $this->resolve_something('resolve_prefix', array($prefix_name));
}
private function resolve_prefix($statement, $parent, $prefix_name) {
if ($statement->arity == 'statement' && $statement->value == $prefix_name) {
return $statement;
}
}
private function resolve_something($found_callback, $passed_args = array(), $seen_function=FALSE, $somethings = array(), $statements = NULL, $parent = NULL) {
if (!$statements) {
$statements = $this->statements;
}
if (!is_array($statements)) {
$statements = array($statements);
}
foreach ($statements as $statement) {
if (is_array($statement)) {
foreach ($statement as $st) {
if (!$seen_function || $st->id != 'function') {
$somethings = $this->resolve_something($found_callback, $passed_args, $seen_function, $somethings, $st, NULL);
}
}
continue;
}
if ($statement->id == 'function') {
if ($seen_function) {
continue;
}
$seen_function = TRUE;
}
if ($something = call_user_func_array(array($this, $found_callback), array_merge(array($statement, $parent), $passed_args))) {
$somethings[] = $something;
}
if ($statement->first) {
$somethings = $this->resolve_something($found_callback, $passed_args, $seen_function, $somethings, $statement->first, $statement);
}
if ($statement->second) {
$somethings = $this->resolve_something($found_callback, $passed_args, $seen_function, $somethings, $statement->second, $statement);
}
if ($statement->third) {
$somethings = $this->resolve_something($found_callback, $passed_args, $seen_function, $somethings, $statement->third, $statement);
}
if (!empty($statement->block)) {
$somethings = $this->resolve_something($found_callback, $passed_args, $seen_function, $somethings, $statement->block, $statement);
}
}
return $somethings;
}
}
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