<?php
-// phpcs:ignoreFile -- File external to MediaWiki. Ignore coding conventions checks.
/**
* JavaScript Minifier
*
// First we declare a few tables that contain our parsing rules
// $opChars : characters, which can be combined without whitespace in between them
- $opChars = array(
+ $opChars = [
'!' => true,
'"' => true,
'%' => true,
'|' => true,
'}' => true,
'~' => true
- );
+ ];
// $tokenTypes : maps keywords and operators to their corresponding token type
- $tokenTypes = array(
+ $tokenTypes = [
'!' => self::TYPE_UN_OP,
'~' => self::TYPE_UN_OP,
'delete' => self::TYPE_UN_OP,
'try' => self::TYPE_DO,
'var' => self::TYPE_DO,
'function' => self::TYPE_FUNC
- );
+ ];
// $goto : This is the main table for our state machine. For every state/token pair
// the following state is defined. When no rule exists for a given pair,
// the state is left unchanged.
- $goto = array(
- self::STATEMENT => array(
+ $goto = [
+ self::STATEMENT => [
self::TYPE_UN_OP => self::EXPRESSION,
self::TYPE_INCR_OP => self::EXPRESSION,
self::TYPE_ADD_OP => self::EXPRESSION,
self::TYPE_IF => self::CONDITION,
self::TYPE_FUNC => self::CONDITION,
self::TYPE_LITERAL => self::EXPRESSION_OP
- ),
- self::CONDITION => array(
+ ],
+ self::CONDITION => [
self::TYPE_PAREN_OPEN => self::PAREN_EXPRESSION
- ),
- self::PROPERTY_ASSIGNMENT => array(
+ ],
+ self::PROPERTY_ASSIGNMENT => [
self::TYPE_COLON => self::PROPERTY_EXPRESSION,
self::TYPE_BRACE_OPEN => self::STATEMENT
- ),
- self::EXPRESSION => array(
+ ],
+ self::EXPRESSION => [
self::TYPE_SEMICOLON => self::STATEMENT,
self::TYPE_BRACE_OPEN => self::PROPERTY_ASSIGNMENT,
self::TYPE_PAREN_OPEN => self::PAREN_EXPRESSION,
self::TYPE_FUNC => self::EXPRESSION_FUNC,
self::TYPE_LITERAL => self::EXPRESSION_OP
- ),
- self::EXPRESSION_NO_NL => array(
+ ],
+ self::EXPRESSION_NO_NL => [
self::TYPE_SEMICOLON => self::STATEMENT,
self::TYPE_BRACE_OPEN => self::PROPERTY_ASSIGNMENT,
self::TYPE_PAREN_OPEN => self::PAREN_EXPRESSION,
self::TYPE_FUNC => self::EXPRESSION_FUNC,
self::TYPE_LITERAL => self::EXPRESSION_OP
- ),
- self::EXPRESSION_OP => array(
+ ],
+ self::EXPRESSION_OP => [
self::TYPE_BIN_OP => self::EXPRESSION,
self::TYPE_ADD_OP => self::EXPRESSION,
self::TYPE_HOOK => self::EXPRESSION_TERNARY,
self::TYPE_COMMA => self::EXPRESSION,
self::TYPE_SEMICOLON => self::STATEMENT,
self::TYPE_PAREN_OPEN => self::PAREN_EXPRESSION
- ),
- self::EXPRESSION_FUNC => array(
+ ],
+ self::EXPRESSION_FUNC => [
self::TYPE_BRACE_OPEN => self::STATEMENT
- ),
- self::EXPRESSION_TERNARY => array(
+ ],
+ self::EXPRESSION_TERNARY => [
self::TYPE_BRACE_OPEN => self::PROPERTY_ASSIGNMENT,
self::TYPE_PAREN_OPEN => self::PAREN_EXPRESSION,
self::TYPE_FUNC => self::EXPRESSION_TERNARY_FUNC,
self::TYPE_LITERAL => self::EXPRESSION_TERNARY_OP
- ),
- self::EXPRESSION_TERNARY_OP => array(
+ ],
+ self::EXPRESSION_TERNARY_OP => [
self::TYPE_BIN_OP => self::EXPRESSION_TERNARY,
self::TYPE_ADD_OP => self::EXPRESSION_TERNARY,
self::TYPE_HOOK => self::EXPRESSION_TERNARY,
self::TYPE_COMMA => self::EXPRESSION_TERNARY,
self::TYPE_PAREN_OPEN => self::PAREN_EXPRESSION
- ),
- self::EXPRESSION_TERNARY_FUNC => array(
+ ],
+ self::EXPRESSION_TERNARY_FUNC => [
self::TYPE_BRACE_OPEN => self::STATEMENT
- ),
- self::PAREN_EXPRESSION => array(
+ ],
+ self::PAREN_EXPRESSION => [
self::TYPE_BRACE_OPEN => self::PROPERTY_ASSIGNMENT,
self::TYPE_PAREN_OPEN => self::PAREN_EXPRESSION,
self::TYPE_FUNC => self::PAREN_EXPRESSION_FUNC,
self::TYPE_LITERAL => self::PAREN_EXPRESSION_OP
- ),
- self::PAREN_EXPRESSION_OP => array(
+ ],
+ self::PAREN_EXPRESSION_OP => [
self::TYPE_BIN_OP => self::PAREN_EXPRESSION,
self::TYPE_ADD_OP => self::PAREN_EXPRESSION,
self::TYPE_HOOK => self::PAREN_EXPRESSION,
self::TYPE_COMMA => self::PAREN_EXPRESSION,
self::TYPE_SEMICOLON => self::PAREN_EXPRESSION,
self::TYPE_PAREN_OPEN => self::PAREN_EXPRESSION
- ),
- self::PAREN_EXPRESSION_FUNC => array(
+ ],
+ self::PAREN_EXPRESSION_FUNC => [
self::TYPE_BRACE_OPEN => self::STATEMENT
- ),
- self::PROPERTY_EXPRESSION => array(
+ ],
+ self::PROPERTY_EXPRESSION => [
self::TYPE_BRACE_OPEN => self::PROPERTY_ASSIGNMENT,
self::TYPE_PAREN_OPEN => self::PAREN_EXPRESSION,
self::TYPE_FUNC => self::PROPERTY_EXPRESSION_FUNC,
self::TYPE_LITERAL => self::PROPERTY_EXPRESSION_OP
- ),
- self::PROPERTY_EXPRESSION_OP => array(
+ ],
+ self::PROPERTY_EXPRESSION_OP => [
self::TYPE_BIN_OP => self::PROPERTY_EXPRESSION,
self::TYPE_ADD_OP => self::PROPERTY_EXPRESSION,
self::TYPE_HOOK => self::PROPERTY_EXPRESSION,
self::TYPE_COMMA => self::PROPERTY_ASSIGNMENT,
self::TYPE_PAREN_OPEN => self::PAREN_EXPRESSION
- ),
- self::PROPERTY_EXPRESSION_FUNC => array(
+ ],
+ self::PROPERTY_EXPRESSION_FUNC => [
self::TYPE_BRACE_OPEN => self::STATEMENT
- )
- );
+ ]
+ ];
// $push : This table contains the rules for when to push a state onto the stack.
// The pushed state is the state to return to when the corresponding
// closing token is found
- $push = array(
- self::STATEMENT => array(
+ $push = [
+ self::STATEMENT => [
self::TYPE_BRACE_OPEN => self::STATEMENT,
self::TYPE_PAREN_OPEN => self::EXPRESSION_OP
- ),
- self::CONDITION => array(
+ ],
+ self::CONDITION => [
self::TYPE_PAREN_OPEN => self::STATEMENT
- ),
- self::PROPERTY_ASSIGNMENT => array(
+ ],
+ self::PROPERTY_ASSIGNMENT => [
self::TYPE_BRACE_OPEN => self::PROPERTY_ASSIGNMENT
- ),
- self::EXPRESSION => array(
+ ],
+ self::EXPRESSION => [
self::TYPE_BRACE_OPEN => self::EXPRESSION_OP,
self::TYPE_PAREN_OPEN => self::EXPRESSION_OP
- ),
- self::EXPRESSION_NO_NL => array(
+ ],
+ self::EXPRESSION_NO_NL => [
self::TYPE_BRACE_OPEN => self::EXPRESSION_OP,
self::TYPE_PAREN_OPEN => self::EXPRESSION_OP
- ),
- self::EXPRESSION_OP => array(
+ ],
+ self::EXPRESSION_OP => [
self::TYPE_HOOK => self::EXPRESSION,
self::TYPE_PAREN_OPEN => self::EXPRESSION_OP
- ),
- self::EXPRESSION_FUNC => array(
+ ],
+ self::EXPRESSION_FUNC => [
self::TYPE_BRACE_OPEN => self::EXPRESSION_OP
- ),
- self::EXPRESSION_TERNARY => array(
+ ],
+ self::EXPRESSION_TERNARY => [
self::TYPE_BRACE_OPEN => self::EXPRESSION_TERNARY_OP,
self::TYPE_PAREN_OPEN => self::EXPRESSION_TERNARY_OP
- ),
- self::EXPRESSION_TERNARY_OP => array(
+ ],
+ self::EXPRESSION_TERNARY_OP => [
self::TYPE_HOOK => self::EXPRESSION_TERNARY,
self::TYPE_PAREN_OPEN => self::EXPRESSION_TERNARY_OP
- ),
- self::EXPRESSION_TERNARY_FUNC => array(
+ ],
+ self::EXPRESSION_TERNARY_FUNC => [
self::TYPE_BRACE_OPEN => self::EXPRESSION_TERNARY_OP
- ),
- self::PAREN_EXPRESSION => array(
+ ],
+ self::PAREN_EXPRESSION => [
self::TYPE_BRACE_OPEN => self::PAREN_EXPRESSION_OP,
self::TYPE_PAREN_OPEN => self::PAREN_EXPRESSION_OP
- ),
- self::PAREN_EXPRESSION_OP => array(
+ ],
+ self::PAREN_EXPRESSION_OP => [
self::TYPE_PAREN_OPEN => self::PAREN_EXPRESSION_OP
- ),
- self::PAREN_EXPRESSION_FUNC => array(
+ ],
+ self::PAREN_EXPRESSION_FUNC => [
self::TYPE_BRACE_OPEN => self::PAREN_EXPRESSION_OP
- ),
- self::PROPERTY_EXPRESSION => array(
+ ],
+ self::PROPERTY_EXPRESSION => [
self::TYPE_BRACE_OPEN => self::PROPERTY_EXPRESSION_OP,
self::TYPE_PAREN_OPEN => self::PROPERTY_EXPRESSION_OP
- ),
- self::PROPERTY_EXPRESSION_OP => array(
+ ],
+ self::PROPERTY_EXPRESSION_OP => [
self::TYPE_PAREN_OPEN => self::PROPERTY_EXPRESSION_OP
- ),
- self::PROPERTY_EXPRESSION_FUNC => array(
+ ],
+ self::PROPERTY_EXPRESSION_FUNC => [
self::TYPE_BRACE_OPEN => self::PROPERTY_EXPRESSION_OP
- )
- );
+ ]
+ ];
// $pop : Rules for when to pop a state from the stack
- $pop = array(
- self::STATEMENT => array( self::TYPE_BRACE_CLOSE => true ),
- self::PROPERTY_ASSIGNMENT => array( self::TYPE_BRACE_CLOSE => true ),
- self::EXPRESSION => array( self::TYPE_BRACE_CLOSE => true ),
- self::EXPRESSION_NO_NL => array( self::TYPE_BRACE_CLOSE => true ),
- self::EXPRESSION_OP => array( self::TYPE_BRACE_CLOSE => true ),
- self::EXPRESSION_TERNARY_OP => array( self::TYPE_COLON => true ),
- self::PAREN_EXPRESSION => array( self::TYPE_PAREN_CLOSE => true ),
- self::PAREN_EXPRESSION_OP => array( self::TYPE_PAREN_CLOSE => true ),
- self::PROPERTY_EXPRESSION => array( self::TYPE_BRACE_CLOSE => true ),
- self::PROPERTY_EXPRESSION_OP => array( self::TYPE_BRACE_CLOSE => true )
- );
+ $pop = [
+ self::STATEMENT => [ self::TYPE_BRACE_CLOSE => true ],
+ self::PROPERTY_ASSIGNMENT => [ self::TYPE_BRACE_CLOSE => true ],
+ self::EXPRESSION => [ self::TYPE_BRACE_CLOSE => true ],
+ self::EXPRESSION_NO_NL => [ self::TYPE_BRACE_CLOSE => true ],
+ self::EXPRESSION_OP => [ self::TYPE_BRACE_CLOSE => true ],
+ self::EXPRESSION_TERNARY_OP => [ self::TYPE_COLON => true ],
+ self::PAREN_EXPRESSION => [ self::TYPE_PAREN_CLOSE => true ],
+ self::PAREN_EXPRESSION_OP => [ self::TYPE_PAREN_CLOSE => true ],
+ self::PROPERTY_EXPRESSION => [ self::TYPE_BRACE_CLOSE => true ],
+ self::PROPERTY_EXPRESSION_OP => [ self::TYPE_BRACE_CLOSE => true ]
+ ];
// $semicolon : Rules for when a semicolon insertion is appropriate
- $semicolon = array(
- self::EXPRESSION_NO_NL => array(
+ $semicolon = [
+ self::EXPRESSION_NO_NL => [
self::TYPE_UN_OP => true,
self::TYPE_INCR_OP => true,
self::TYPE_ADD_OP => true,
self::TYPE_DO => true,
self::TYPE_FUNC => true,
self::TYPE_LITERAL => true
- ),
- self::EXPRESSION_OP => array(
+ ],
+ self::EXPRESSION_OP => [
self::TYPE_UN_OP => true,
self::TYPE_INCR_OP => true,
self::TYPE_BRACE_OPEN => true,
self::TYPE_DO => true,
self::TYPE_FUNC => true,
self::TYPE_LITERAL => true
- )
- );
+ ]
+ ];
// $divStates : Contains all states that can be followed by a division operator
- $divStates = array(
+ $divStates = [
self::EXPRESSION_OP => true,
self::EXPRESSION_TERNARY_OP => true,
self::PAREN_EXPRESSION_OP => true,
self::PROPERTY_EXPRESSION_OP => true
- );
+ ];
// Here's where the minifying takes place: Loop through the input, looking for tokens
// and output them to $out, taking actions to the above defined rules when appropriate.
$lineLength = 0;
$newlineFound = true;
$state = self::STATEMENT;
- $stack = array();
+ $stack = [];
$last = ';'; // Pretend that we have seen a semicolon yet
- while( $pos < $length ) {
+ while ( $pos < $length ) {
// First, skip over any whitespace and multiline comments, recording whether we
// found any newline character
$skip = strspn( $s, " \t\n\r\xb\xc", $pos );
- if( !$skip ) {
+ if ( !$skip ) {
$ch = $s[$pos];
- if( $ch === '/' && substr( $s, $pos, 2 ) === '/*' ) {
+ if ( $ch === '/' && substr( $s, $pos, 2 ) === '/*' ) {
// Multiline comment. Search for the end token or EOT.
$end = strpos( $s, '*/', $pos + 2 );
$skip = $end === false ? $length - $pos : $end - $pos + 2;
}
}
- if( $skip ) {
+ if ( $skip ) {
// The semicolon insertion mechanism needs to know whether there was a newline
// between two tokens, so record it now.
- if( !$newlineFound && strcspn( $s, "\r\n", $pos, $skip ) !== $skip ) {
+ if ( !$newlineFound && strcspn( $s, "\r\n", $pos, $skip ) !== $skip ) {
$newlineFound = true;
}
$pos += $skip;
// Handle C++-style comments and html comments, which are treated as single line
// comments by the browser, regardless of whether the end tag is on the same line.
// Handle --> the same way, but only if it's at the beginning of the line
- if( ( $ch === '/' && substr( $s, $pos, 2 ) === '//' )
+ if ( ( $ch === '/' && substr( $s, $pos, 2 ) === '//' )
|| ( $ch === '<' && substr( $s, $pos, 4 ) === '<!--' )
|| ( $ch === '-' && $newlineFound && substr( $s, $pos, 3 ) === '-->' )
) {
// of any next token in the stream.
$end = $pos + 1;
// Handle string literals
- if( $ch === "'" || $ch === '"' ) {
+ if ( $ch === "'" || $ch === '"' ) {
// Search to the end of the string literal, skipping over backslash escapes
$search = $ch . '\\';
do{
$end += strcspn( $s, $search, $end ) + 2;
// If the last character in our search for a quote or a backlash
// matched a backslash and we haven't reached the end, keep searching..
- } while( $end - 2 < $length && $s[$end - 2] === '\\' );
+ } while ( $end - 2 < $length && $s[$end - 2] === '\\' );
// Correction (1): Undo speculative add, keep only one (end of string literal)
$end--;
if ( $end > $length ) {
}
// We have to distinguish between regexp literals and division operators
// A division operator is only possible in certain states
- } elseif( $ch === '/' && !isset( $divStates[$state] ) ) {
+ } elseif ( $ch === '/' && !isset( $divStates[$state] ) ) {
// Regexp literal
- for( ; ; ) {
+ for ( ; ; ) {
// Search until we find "/" (end of regexp), "\" (backslash escapes),
// or "[" (start of character classes).
do{
// We'll correct this outside the loop.
$end += strcspn( $s, '/[\\', $end ) + 2;
// If backslash escape, keep searching...
- } while( $end - 2 < $length && $s[$end - 2] === '\\' );
+ } while ( $end - 2 < $length && $s[$end - 2] === '\\' );
// Correction (1): Undo speculative add, keep only one (end of regexp)
$end--;
if ( $end > $length ) {
// We'll substract one outside the loop.
$end += strcspn( $s, ']\\', $end ) + 2;
// If backslash escape, keep searching...
- } while( $end - 2 < $length && $s[$end - 2] === '\\' );
+ } while ( $end - 2 < $length && $s[$end - 2] === '\\' );
// Correction (1): Undo speculative add, keep only one (end of regexp)
$end--;
}
// Search past the regexp modifiers (gi)
- while( $end < $length && ctype_alpha( $s[$end] ) ) {
+ while ( $end < $length && ctype_alpha( $s[$end] ) ) {
$end++;
}
- } elseif(
+ } elseif (
$ch === '0'
- && ($pos + 1 < $length) && ($s[$pos + 1] === 'x' || $s[$pos + 1] === 'X' )
+ && ( $pos + 1 < $length ) && ( $s[$pos + 1] === 'x' || $s[$pos + 1] === 'X' )
) {
// Hex numeric literal
$end++; // x or X
$len = strspn( $s, '0123456789ABCDEFabcdef', $end );
if ( !$len ) {
- return self::parseError($s, $pos, 'Expected a hexadecimal number but found ' . substr( $s, $pos, 5 ) . '...' );
+ return self::parseError(
+ $s,
+ $pos,
+ 'Expected a hexadecimal number but found ' . substr( $s, $pos, 5 ) . '...'
+ );
}
$end += $len;
- } elseif(
+ } elseif (
ctype_digit( $ch )
|| ( $ch === '.' && $pos + 1 < $length && ctype_digit( $s[$pos + 1] ) )
) {
$end += strspn( $s, '0123456789', $end );
$decimal = strspn( $s, '.', $end );
- if ($decimal) {
+ if ( $decimal ) {
if ( $decimal > 2 ) {
- return self::parseError($s, $end, 'The number has too many decimal points' );
+ return self::parseError( $s, $end, 'The number has too many decimal points' );
}
$end += strspn( $s, '0123456789', $end + 1 ) + $decimal;
}
$exponent = strspn( $s, 'eE', $end );
- if( $exponent ) {
+ if ( $exponent ) {
if ( $exponent > 1 ) {
- return self::parseError($s, $end, 'Number with several E' );
+ return self::parseError( $s, $end, 'Number with several E' );
}
$end++;
$end += strspn( $s, '-+', $end );
$len = strspn( $s, '0123456789', $end );
if ( !$len ) {
- return self::parseError($s, $pos, 'No decimal digits after e, how many zeroes should be added?' );
+ return self::parseError(
+ $s,
+ $pos,
+ 'No decimal digits after e, how many zeroes should be added?'
+ );
}
$end += $len;
}
- } elseif( isset( $opChars[$ch] ) ) {
+ } elseif ( isset( $opChars[$ch] ) ) {
// Punctuation character. Search for the longest matching operator.
- while(
+ while (
$end < $length
&& isset( $tokenTypes[substr( $s, $pos, $end - $pos + 1 )] )
) {
$token = substr( $s, $pos, $end - $pos ); // so $end - $pos == strlen( $token )
$type = isset( $tokenTypes[$token] ) ? $tokenTypes[$token] : self::TYPE_LITERAL;
- if( $newlineFound && isset( $semicolon[$state][$type] ) ) {
+ if ( $newlineFound && isset( $semicolon[$state][$type] ) ) {
// This token triggers the semicolon insertion mechanism of javascript. While we
// could add the ; token here ourselves, keeping the newline has a few advantages.
$out .= "\n";
$state = self::STATEMENT;
$lineLength = 0;
- } elseif( $maxLineLength > 0 && $lineLength + $end - $pos > $maxLineLength &&
- !isset( $semicolon[$state][$type] ) && $type !== self::TYPE_INCR_OP )
- {
+ } elseif ( $maxLineLength > 0 && $lineLength + $end - $pos > $maxLineLength &&
+ !isset( $semicolon[$state][$type] ) && $type !== self::TYPE_INCR_OP ) {
// This line would get too long if we added $token, so add a newline first.
// Only do this if it won't trigger semicolon insertion and if it won't
// put a postfix increment operator on its own line, which is illegal in js.
$out .= "\n";
$lineLength = 0;
// Check, whether we have to separate the token from the last one with whitespace
- } elseif( !isset( $opChars[$last] ) && !isset( $opChars[$ch] ) ) {
+ } elseif ( !isset( $opChars[$last] ) && !isset( $opChars[$ch] ) ) {
$out .= ' ';
$lineLength++;
// Don't accidentally create ++, -- or // tokens
- } elseif( $last === $ch && ( $ch === '+' || $ch === '-' || $ch === '/' ) ) {
+ } elseif ( $last === $ch && ( $ch === '+' || $ch === '-' || $ch === '/' ) ) {
$out .= ' ';
$lineLength++;
}
$newlineFound = false;
// Now that we have output our token, transition into the new state.
- if( isset( $push[$state][$type] ) && count( $stack ) < self::STACK_LIMIT ) {
+ if ( isset( $push[$state][$type] ) && count( $stack ) < self::STACK_LIMIT ) {
$stack[] = $push[$state][$type];
}
- if( $stack && isset( $pop[$state][$type] ) ) {
+ if ( $stack && isset( $pop[$state][$type] ) ) {
$state = array_pop( $stack );
- } elseif( isset( $goto[$state][$type] ) ) {
+ } elseif ( isset( $goto[$state][$type] ) ) {
$state = $goto[$state][$type];
}
}
return $out;
}
- static function parseError($fullJavascript, $position, $errorMsg) {
+ static function parseError( $fullJavascript, $position, $errorMsg ) {
// TODO: Handle the error: trigger_error, throw exception, return false...
return false;
}
dépôts / lhc / web / wiklou.git / commitdiff