Scope Resolution Operator (::)

[huynhminhson]

I met an issue with Scope Resolution Operator (::), mammouth cannot parse it.

[btwael]

Hey @huynhminhson, can you write for use an example, and how it will be compiled?? and we will work on it and tnx :)

[huynhminhson]

Hi, below is the code and its error for your reference :) I expected it will be compiled to

Mage::app()->getId()

{{
Mage::app().getId()
}}

{ [SyntaxError: Expected "!", "!=", "!==", "%", "%=", "&", "&&", "&=", "(", "*", "*=", "+", "++", "+=", ",", "-", "--", "-=", "->", ".", ".=", "/", "/*", "//", "/=", "<", "<<", "<<=", "<=", "=", "==", "===", ">", ">=", ">>", ">>=", ">>>", ">>>=", "?", "NULL", "None", "[", "\\", "\n", "\r", "\r\n", "^", "^=", "`", "and", "class", "false", "for", "if", "namespace", "new", "of", "or", "switch", "this", "true", "try", "while", "|", "|=", "||", "}}", "~", [ \t], comment, identifier, number, string or whitespace but ":" found.]
  name: 'SyntaxError',
  expected: 
   [ '"!"',
     '"!="',
     '"!=="',
     '"%"',
     '"%="',
     '"&"',
     '"&&"',
     '"&="',
     '"("',
     '"*"',
     '"*="',
     '"+"',
     '"++"',
     '"+="',
     '","',
     '"-"',
     '"--"',
     '"-="',
     '"->"',
     '"."',
     '".="',
     '"/"',
     '"/*"',
     '"//"',
     '"/="',
     '"<"',
     '"<<"',
     '"<<="',
     '"<="',
     '"="',
     '"=="',
     '"==="',
     '">"',
     '">="',
     '">>"',
     '">>="',
     '">>>"',
     '">>>="',
     '"?"',
     '"NULL"',
     '"None"',
     '"["',
     '"\\\\"',
     '"\\n"',
     '"\\r"',
     '"\\r\\n"',
     '"^"',
     '"^="',
     '"`"',
     '"and"',
     '"class"',
     '"false"',
     '"for"',
     '"if"',
     '"namespace"',
     '"new"',
     '"of"',
     '"or"',
     '"switch"',
     '"this"',
     '"true"',
     '"try"',
     '"while"',
     '"|"',
     '"|="',
     '"||"',
     '"}}"',
     '"~"',
     '[ \\t]',
     'comment',
     'identifier',
     'number',
     'string',
     'whitespace' ],
  found: ':',
  message: 'Expected "!", "!=", "!==", "%", "%=", "&", "&&", "&=", "(", "*", "*=", "+", "++", "+=", ",", "-", "--", "-=", "->", ".", ".=", "/", "/*", "//", "/=", "<", "<<", "<<=", "<=", "=", "==", "===", ">", ">=", ">>", ">>=", ">>>", ">>>=", "?", "NULL", "None", "[", "\\\\", "\\n", "\\r", "\\r\\n", "^", "^=", "`", "and", "class", "false", "for", "if", "namespace", "new", "of", "or", "switch", "this", "true", "try", "while", "|", "|=", "||", "}}", "~", [ \\t], comment, identifier, number, string or whitespace but ":" found.',
  offset: 8,
  line: 2,
  column: 5 }

[btwael]

For this time, Mammouth don't support Scope Resolution Operator, I'm now studying PHP Scope Resolution Operator, and trying to find a quick equivalent for this feature. in Mammouth, m.s is compiled to $m->s. If you have any suggestions, you're welcome.

[btwael]

Hey, @huynhminhson, see this now: http://mammouth.wamalaka.com/#try:{{%0AMage%3A%3Aapp%28%29.getId%28%29%0A}} this feature is available since v0.2.2, update mammouth now via npm or download the Github Repo. tnx again

[huynhminhson]

Thanks for for your quick reply and action. However there is another small issue.

{{ Mage::app().getId() }}

is now compiled to

$Mage::app()->getId()

but it should be

Mage::app()->getId()

(without $, Mage is a class, not a variable)

[btwael]

@huynhminhson, I have only one question to fix this, are Mage, in your example can be a variable like this?? in PHP

$Mage = new Class()
$Mage::app()->getId()

or

$Mage = new Class()
Mage::app()->getId()

I'm not good in PHP :(

[huynhminhson]

Mage is a predefined class, Mage::app() is to call method app() in class Mage.

class Mage {
public function app() {
...}}

The right syntax is

Mage::app()->getId()

[btwael]

I had found this example in php documentation:

class MyClass
{
    const CONSTANT = 'constant value';

    function showConstant() {
        echo  self::CONSTANT . "\n";
    }
}

echo MyClass::CONSTANT . "\n";

$classname = "MyClass";
echo $classname::CONSTANT . "\n"; // As of PHP 5.3.0

$class = new MyClass();
$class->showConstant();

echo $class::CONSTANT."\n";

I think that Mammouth compiler should be written from zero, because the current compiler can't do a difference between classes and variables.