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 44 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 18 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.