xarxaprod-wp-theme/vendor/mck89/peast/lib/Peast/Syntax/Node/NumericLiteral.php

191 lines
4.9 KiB
PHP

<?php
/**
* This file is part of the Peast package
*
* (c) Marco Marchiò <marco.mm89@gmail.com>
*
* For the full copyright and license information refer to the LICENSE file
* distributed with this source code
*/
namespace Peast\Syntax\Node;
/**
* A node that represents a numeric literal.
*
* @author Marco Marchiò <marco.mm89@gmail.com>
*/
class NumericLiteral extends Literal
{
/**
* Map of node properties
*
* @var array
*/
protected $propertiesMap = array(
"format" => false
);
//Format constants
/**
* Decimal number format
*/
const DECIMAL = "decimal";
/**
* Hexadecimal number format
*/
const HEXADECIMAL = "hexadecimal";
/**
* Octal number format
*/
const OCTAL = "octal";
/**
* Binary number format
*/
const BINARY = "binary";
/**
* Node's numeric format
*
* @var string
*/
protected $format = self::DECIMAL;
/**
* Numeric forms conversion rules
*
* @var array
*/
protected $forms = array(
"b" => array(
"check" => "/^0b[01]+[01_]*$/i",
"conv" => "bindec",
"format" => self::BINARY
),
"o" => array(
"check" => "/^0o[0-7]+[0-7_]*$/i",
"conv" => "octdec",
"format" => self::OCTAL
),
"x" => array(
"check" => "/^0x[0-9a-f]+[0-9a-f_]*$/i",
"conv" => "hexdec",
"format" => self::HEXADECIMAL
),
);
/**
* Sets node's value
*
* @param float $value Value
*
* @return $this
*/
public function setValue($value)
{
$value = (float) $value;
$intValue = (int) $value;
if ($value == $intValue) {
$value = $intValue;
}
$this->value = $value;
//Force recalculation of the raw value
return $this->setFormat($this->format);
}
/**
* Sets node's raw value
*
* @param mixed $raw Raw value
*
* @return $this
*
* @throws \Exception
*/
public function setRaw($raw)
{
$value = $raw;
$format = self::DECIMAL;
if (is_string($value) && $value !== "") {
//Hexadecimal, binary or octal
$startZero = $value[0] === "0";
$form = $startZero && isset($value[1]) ? strtolower($value[1]) : null;
//Numeric separator cannot appear at the beginning or at the end of the number
if (preg_match("/^_|_$/", $value)) {
throw new \Exception("Invalid numeric value");
} elseif (isset($this->forms[$form])) {
$formDef = $this->forms[$form];
if (!preg_match($formDef["check"], $value)) {
throw new \Exception("Invalid " . $formDef["format"]);
}
$value = str_replace("_", "", $value);
$value = $formDef["conv"]($value);
$format = $formDef["format"];
} elseif ($startZero && preg_match("/^0[0-7_]+$/", $value)) {
//Legacy octal form
$value = str_replace("_", "", $value);
$value = octdec($value);
$format = self::OCTAL;
} elseif (
preg_match("/^([\d_]*\.?[\d_]*)(?:e[+\-]?[\d_]+)?$/i", $value, $match) &&
$match[1] !== "" &&
$match[1] !== "." &&
!preg_match("/_e|e[+-]?_|_$/", $value)
) {
$value = str_replace("_", "", $value);
} else {
throw new \Exception("Invalid numeric value");
}
} elseif (!is_int($value) && !is_float($value)) {
throw new \Exception("Invalid numeric value");
}
$value = (float) $value;
$intValue = (int) $value;
if ($value == $intValue) {
$value = $intValue;
}
$this->format = $format;
$this->value = $value;
$this->raw = $raw;
return $this;
}
/**
* Returns node's numeric format
*
* @return string
*/
public function getFormat()
{
return $this->format;
}
/**
* Sets node's numeric format
*
* @param string $format Format, one of the format constants
*
* @return $this
*/
public function setFormat($format)
{
$this->format = $format;
switch ($format) {
case self::BINARY:
$this->raw = "0b" . decbin($this->value);
break;
case self::OCTAL:
$this->raw = "0o" . decoct($this->value);
break;
case self::HEXADECIMAL:
$this->raw = "0x" . dechex($this->value);
break;
default:
$this->raw = (string) $this->value;
break;
}
return $this;
}
}