Diviner libphutil Tech Docs PhutilSymbolLoader

final class PhutilSymbolLoader
libphutil Technical Documentation ()

Query and load Phutil classes, interfaces and functions.

PhutilSymbolLoader is a query object which selects symbols which satisfy certain criteria, and optionally loads them. For instance, to load all classes in a library:

$symbols = id(new PhutilSymbolLoader())
  ->setType('class')
  ->setLibrary('example')
  ->selectAndLoadSymbols();

When you execute the loading query, it returns a dictionary of matching symbols:

array(
  'class$Example' => array(
    'type'    => 'class',
    'name'    => 'Example',
    'library' => 'libexample',
    'where'   => 'examples/example.php',
  ),
  // ... more ...
);

The library and where keys show where the symbol is defined. The type and name keys identify the symbol itself.

NOTE: This class must not use libphutil functions, including id() and idx().

Tasks

Configuring the Query

public function setType($type) — Select the type of symbol to load, either `class`, `function` or `interface`.
public function setLibrary($library) — Restrict the symbol query to a specific library; only symbols from this library will be loaded.
public function setPathPrefix($path) — Restrict the symbol query to a specific path prefix; only symbols defined in files below that path will be selected.
public function setName($name) — Restrict the symbol query to a single symbol name, e.g. a specific class or function name.
public function setAncestorClass($base) — Restrict the symbol query to only descendants of some class. This will strictly select descendants, the base class will not be selected. This implies loading only classes.
public function setConcreteOnly($concrete) — Restrict the symbol query to only concrete symbols; this will filter out abstract classes.

Loading Symbols

public function selectAndLoadSymbols() — Execute the query and select matching symbols, then load them so they can be used.
public function selectSymbolsWithoutLoading() — Execute the query and select matching symbols, but do not load them. This will perform slightly better if you are only interested in the existence of the symbols and don't plan to use them; otherwise, use @{method:selectAndLoadSymbols}.

Internals

private function selectDescendantsOf($tree, $root)
private function loadSymbol($symbol_spec)

Other Methods

public function setContinueOnFailure($continue)
public function loadObjects($argv) — Select symbols matching the query and then instantiate them, returning concrete objects. This is a convenience method which simplifies symbol handling if you are only interested in building objects.

Methods

public function setType($type)

Select the type of symbol to load, either class, function or interface.

Parameters

string

$type

Type of symbol to load.

Return

this

public function setLibrary($library)

Restrict the symbol query to a specific library; only symbols from this library will be loaded.

Parameters

string

$library

Library name.

Return

this

public function setPathPrefix($path)

Restrict the symbol query to a specific path prefix; only symbols defined in files below that path will be selected.

Parameters

string

$path

Path relative to library root, like "apps/cheese/".

Return

this

public function setName($name)

Restrict the symbol query to a single symbol name, e.g. a specific class or function name.

Parameters

string

$name

Symbol name.

Return

this

public function setAncestorClass($base)

Restrict the symbol query to only descendants of some class. This will strictly select descendants, the base class will not be selected. This implies loading only classes.

Parameters

string

$base

Base class name.

Return

this

public function setConcreteOnly($concrete)

Restrict the symbol query to only concrete symbols; this will filter out abstract classes.

NOTE: This currently causes class symbols to load, even if you run selectSymbolsWithoutLoading().

Parameters

bool

$concrete

True if the query should load only concrete symbols.

Return

this

public function setContinueOnFailure($continue)

This method is not documented.

Parameters

$continue

Return

wild

public function selectAndLoadSymbols()

Execute the query and select matching symbols, then load them so they can be used.

Return

dict	A dictionary of matching symbols. See top-level class documentation for details. These symbols will be loaded and available.

public function selectSymbolsWithoutLoading()

Execute the query and select matching symbols, but do not load them. This will perform slightly better if you are only interested in the existence of the symbols and don't plan to use them; otherwise, use selectAndLoadSymbols().

Return

dict	A dictionary of matching symbols. See top-level class documentation for details.

public function loadObjects($argv)

Select symbols matching the query and then instantiate them, returning concrete objects. This is a convenience method which simplifies symbol handling if you are only interested in building objects.

If you want to do more than build objects, or want to build objects with varying constructor arguments, use selectAndLoadSymbols() for fine-grained control over results.

This method implicitly restricts the query to match only concrete classes.

Parameters

list<wild>

$argv

List of constructor arguments.

Return

map<string, object>

Map of class names to constructed objects.

private function selectDescendantsOf($tree, $root)

This method is not documented.

Parameters

array	$tree
	$root

Return

wild

private function loadSymbol($symbol_spec)

This method is not documented.

Parameters

array

$symbol_spec

Return

wild

Defined: src/symbols/PhutilSymbolLoader.php:42

final class PhutilSymbolLoaderlibphutil Technical Documentation ()

Tasks

Configuring the Query

Loading Symbols

Internals

Other Methods

Methods

public function setType($type)

public function setLibrary($library)

public function setPathPrefix($path)

public function setName($name)

public function setAncestorClass($base)

public function setConcreteOnly($concrete)

public function setContinueOnFailure($continue)

public function selectAndLoadSymbols()

public function selectSymbolsWithoutLoading()

public function loadObjects($argv)

private function selectDescendantsOf($tree, $root)

private function loadSymbol($symbol_spec)

final class PhutilSymbolLoader
libphutil Technical Documentation ()