Collaboration diagram for ilDclTokenizer:

Static Public Member Functions
static	getTokens ($expression)
	Split expression by & (ignore escaped &-symbols with backslash) More...

static	getMathTokens ($math_expression)
	Generate tokens for a math expression. More...

Detailed Description

Class ilDclTokenizer.

Author: Stefan Wanzenried sw@st.nosp@m.uder.nosp@m.-raim.nosp@m.ann..nosp@m.ch; Fabian Schmid fs@st.nosp@m.uder.nosp@m.-raim.nosp@m.ann..nosp@m.ch

Definition at line 9 of file class.ilDclTokenizer.php.

Member Function Documentation

◆ getMathTokens()

static ilDclTokenizer::getMathTokens ( $math_expression )

static

Generate tokens for a math expression.

Parameters

string $math_expression Expression of type math

Returns: array

Definition at line 46 of file class.ilDclTokenizer.php.

    {
        $operators = array_keys(ilDclExpressionParser::getOperators());
        $pattern = '#((^\[\[)[\d\.]+)|(\‍(|\‍)|\\' . implode("|\\", $operators) . ')#';
        $tokens = preg_split($pattern, $math_expression, -1, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY);
 
        return array_map('trim', $tokens);
    }

References ilDclExpressionParser\getOperators(), and PREG_SPLIT_DELIM_CAPTURE.

Referenced by ilDclExpressionParser\parse().

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◆ getTokens()

static ilDclTokenizer::getTokens ( $expression )

static

Split expression by & (ignore escaped &-symbols with backslash)

Parameters

string $expression Global expression to parse

Returns: array

Definition at line 19 of file class.ilDclTokenizer.php.

    {
        $expression = ltrim($expression, '=');
        $expression = trim($expression);
        preg_match_all("/([^\\\\&]|\\\\&)*/ui", $expression, $matches);
 
        $results = $matches[0];
 
        $return = array();
        foreach ($results as $r) {
            if (!$r) {
                continue;
            }
            $return[] = str_ireplace('\&', '&', $r);
        }
 
        return array_map('trim', $return);
    }

References $r, and $results.