/**
 * Helper class to format the JavaScript code.
 * Based on code initially developed by: http://jsbeautifier.org/
 *
 * Usage:
    js_beautify(js_source_text);
    js_beautify(js_source_text, options);

  The options are:
    indent_size (default 4)          - indentation size,
    indent_char (default space)      - character to indent with,
    preserve_newlines (default true) - whether existing line breaks should be preserved,
    max_preserve_newlines (default unlimited) - maximum number of line breaks to be preserved in one chunk,

    jslint_happy (default false) - if true, then jslint-stricter mode is enforced.

            jslint_happy   !jslint_happy
            ---------------------------------
             function ()      function()

    brace_style (default "collapse") - "collapse" | "expand" | "end-expand"
            put braces on the same line as control statements (default), or put braces on own line (Allman / ANSI style), or just put end braces on own line.

    space_before_conditional (default true) - should the space before conditional statement be added, "if(true)" vs "if (true)",

    unescape_strings (default false) - should printable characters in strings encoded in \xNN notation be unescaped, "example" vs "\x65\x78\x61\x6d\x70\x6c\x65"

    wrap_line_length (default unlimited) - lines should wrap at next opportunity after this number of characters.
          NOTE: This is not a hard limit. Lines will continue until a point where a newline would
                be preserved if it were present.

    e.g

    js_beautify(js_source_text, {
      'indent_size': 1,
      'indent_char': '\t'
    });
 */ export class ScriptFormatter { private nonASCIIwhitespace : any = /[\u1680\u180e\u2000-\u200a\u202f\u205f\u3000\ufeff]/ ; private nonASCIIidentifierStartChars : any = "\xaa\xb5\xba\xc0-\xd6\xd8-\xf6\xf8-\u02c1\u02c6-\u02d1\u02e0-\u02e4\u02ec\u02ee\u0370-\u0374\u0376\u0377\u037a-\u037d\u0386\u0388-\u038a\u038c\u038e-\u03a1\u03a3-\u03f5\u03f7-\u0481\u048a-\u0527\u0531-\u0556\u0559\u0561-\u0587\u05d0-\u05ea\u05f0-\u05f2\u0620-\u064a\u066e\u066f\u0671-\u06d3\u06d5\u06e5\u06e6\u06ee\u06ef\u06fa-\u06fc\u06ff\u0710\u0712-\u072f\u074d-\u07a5\u07b1\u07ca-\u07ea\u07f4\u07f5\u07fa\u0800-\u0815\u081a\u0824\u0828\u0840-\u0858\u08a0\u08a2-\u08ac\u0904-\u0939\u093d\u0950\u0958-\u0961\u0971-\u0977\u0979-\u097f\u0985-\u098c\u098f\u0990\u0993-\u09a8\u09aa-\u09b0\u09b2\u09b6-\u09b9\u09bd\u09ce\u09dc\u09dd\u09df-\u09e1\u09f0\u09f1\u0a05-\u0a0a\u0a0f\u0a10\u0a13-\u0a28\u0a2a-\u0a30\u0a32\u0a33\u0a35\u0a36\u0a38\u0a39\u0a59-\u0a5c\u0a5e\u0a72-\u0a74\u0a85-\u0a8d\u0a8f-\u0a91\u0a93-\u0aa8\u0aaa-\u0ab0\u0ab2\u0ab3\u0ab5-\u0ab9\u0abd\u0ad0\u0ae0\u0ae1\u0b05-\u0b0c\u0b0f\u0b10\u0b13-\u0b28\u0b2a-\u0b30\u0b32\u0b33\u0b35-\u0b39\u0b3d\u0b5c\u0b5d\u0b5f-\u0b61\u0b71\u0b83\u0b85-\u0b8a\u0b8e-\u0b90\u0b92-\u0b95\u0b99\u0b9a\u0b9c\u0b9e\u0b9f\u0ba3\u0ba4\u0ba8-\u0baa\u0bae-\u0bb9\u0bd0\u0c05-\u0c0c\u0c0e-\u0c10\u0c12-\u0c28\u0c2a-\u0c33\u0c35-\u0c39\u0c3d\u0c58\u0c59\u0c60\u0c61\u0c85-\u0c8c\u0c8e-\u0c90\u0c92-\u0ca8\u0caa-\u0cb3\u0cb5-\u0cb9\u0cbd\u0cde\u0ce0\u0ce1\u0cf1\u0cf2\u0d05-\u0d0c\u0d0e-\u0d10\u0d12-\u0d3a\u0d3d\u0d4e\u0d60\u0d61\u0d7a-\u0d7f\u0d85-\u0d96\u0d9a-\u0db1\u0db3-\u0dbb\u0dbd\u0dc0-\u0dc6\u0e01-\u0e30\u0e32\u0e33\u0e40-\u0e46\u0e81\u0e82\u0e84\u0e87\u0e88\u0e8a\u0e8d\u0e94-\u0e97\u0e99-\u0e9f\u0ea1-\u0ea3\u0ea5\u0ea7\u0eaa\u0eab\u0ead-\u0eb0\u0eb2\u0eb3\u0ebd\u0ec0-\u0ec4\u0ec6\u0edc-\u0edf\u0f00\u0f40-\u0f47\u0f49-\u0f6c\u0f88-\u0f8c\u1000-\u102a\u103f\u1050-\u1055\u105a-\u105d\u1061\u1065\u1066\u106e-\u1070\u1075-\u1081\u108e\u10a0-\u10c5\u10c7\u10cd\u10d0-\u10fa\u10fc-\u1248\u124a-\u124d\u1250-\u1256\u1258\u125a-\u125d\u1260-\u1288\u128a-\u128d\u1290-\u12b0\u12b2-\u12b5\u12b8-\u12be\u12c0\u12c2-\u12c5\u12c8-\u12d6\u12d8-\u1310\u1312-\u1315\u1318-\u135a\u1380-\u138f\u13a0-\u13f4\u1401-\u166c\u166f-\u167f\u1681-\u169a\u16a0-\u16ea\u16ee-\u16f0\u1700-\u170c\u170e-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176c\u176e-\u1770\u1780-\u17b3\u17d7\u17dc\u1820-\u1877\u1880-\u18a8\u18aa\u18b0-\u18f5\u1900-\u191c\u1950-\u196d\u1970-\u1974\u1980-\u19ab\u19c1-\u19c7\u1a00-\u1a16\u1a20-\u1a54\u1aa7\u1b05-\u1b33\u1b45-\u1b4b\u1b83-\u1ba0\u1bae\u1baf\u1bba-\u1be5\u1c00-\u1c23\u1c4d-\u1c4f\u1c5a-\u1c7d\u1ce9-\u1cec\u1cee-\u1cf1\u1cf5\u1cf6\u1d00-\u1dbf\u1e00-\u1f15\u1f18-\u1f1d\u1f20-\u1f45\u1f48-\u1f4d\u1f50-\u1f57\u1f59\u1f5b\u1f5d\u1f5f-\u1f7d\u1f80-\u1fb4\u1fb6-\u1fbc\u1fbe\u1fc2-\u1fc4\u1fc6-\u1fcc\u1fd0-\u1fd3\u1fd6-\u1fdb\u1fe0-\u1fec\u1ff2-\u1ff4\u1ff6-\u1ffc\u2071\u207f\u2090-\u209c\u2102\u2107\u210a-\u2113\u2115\u2119-\u211d\u2124\u2126\u2128\u212a-\u212d\u212f-\u2139\u213c-\u213f\u2145-\u2149\u214e\u2160-\u2188\u2c00-\u2c2e\u2c30-\u2c5e\u2c60-\u2ce4\u2ceb-\u2cee\u2cf2\u2cf3\u2d00-\u2d25\u2d27\u2d2d\u2d30-\u2d67\u2d6f\u2d80-\u2d96\u2da0-\u2da6\u2da8-\u2dae\u2db0-\u2db6\u2db8-\u2dbe\u2dc0-\u2dc6\u2dc8-\u2dce\u2dd0-\u2dd6\u2dd8-\u2dde\u2e2f\u3005-\u3007\u3021-\u3029\u3031-\u3035\u3038-\u303c\u3041-\u3096\u309d-\u309f\u30a1-\u30fa\u30fc-\u30ff\u3105-\u312d\u3131-\u318e\u31a0-\u31ba\u31f0-\u31ff\u3400-\u4db5\u4e00-\u9fcc\ua000-\ua48c\ua4d0-\ua4fd\ua500-\ua60c\ua610-\ua61f\ua62a\ua62b\ua640-\ua66e\ua67f-\ua697\ua6a0-\ua6ef\ua717-\ua71f\ua722-\ua788\ua78b-\ua78e\ua790-\ua793\ua7a0-\ua7aa\ua7f8-\ua801\ua803-\ua805\ua807-\ua80a\ua80c-\ua822\ua840-\ua873\ua882-\ua8b3\ua8f2-\ua8f7\ua8fb\ua90a-\ua925\ua930-\ua946\ua960-\ua97c\ua984-\ua9b2\ua9cf\uaa00-\uaa28\uaa40-\uaa42\uaa44-\uaa4b\uaa60-\uaa76\uaa7a\uaa80-\uaaaf\uaab1\uaab5\uaab6\uaab9-\uaabd\uaac0\uaac2\uaadb-\uaadd\uaae0-\uaaea\uaaf2-\uaaf4\uab01-\uab06\uab09-\uab0e\uab11-\uab16\uab20-\uab26\uab28-\uab2e\uabc0-\uabe2\uac00-\ud7a3\ud7b0-\ud7c6\ud7cb-\ud7fb\uf900-\ufa6d\ufa70-\ufad9\ufb00-\ufb06\ufb13-\ufb17\ufb1d\ufb1f-\ufb28\ufb2a-\ufb36\ufb38-\ufb3c\ufb3e\ufb40\ufb41\ufb43\ufb44\ufb46-\ufbb1\ufbd3-\ufd3d\ufd50-\ufd8f\ufd92-\ufdc7\ufdf0-\ufdfb\ufe70-\ufe74\ufe76-\ufefc\uff21-\uff3a\uff41-\uff5a\uff66-\uffbe\uffc2-\uffc7\uffca-\uffcf\uffd2-\uffd7\uffda-\uffdc" ; private nonASCIIidentifierChars : any = "\u0300-\u036f\u0483-\u0487\u0591-\u05bd\u05bf\u05c1\u05c2\u05c4\u05c5\u05c7\u0610-\u061a\u0620-\u0649\u0672-\u06d3\u06e7-\u06e8\u06fb-\u06fc\u0730-\u074a\u0800-\u0814\u081b-\u0823\u0825-\u0827\u0829-\u082d\u0840-\u0857\u08e4-\u08fe\u0900-\u0903\u093a-\u093c\u093e-\u094f\u0951-\u0957\u0962-\u0963\u0966-\u096f\u0981-\u0983\u09bc\u09be-\u09c4\u09c7\u09c8\u09d7\u09df-\u09e0\u0a01-\u0a03\u0a3c\u0a3e-\u0a42\u0a47\u0a48\u0a4b-\u0a4d\u0a51\u0a66-\u0a71\u0a75\u0a81-\u0a83\u0abc\u0abe-\u0ac5\u0ac7-\u0ac9\u0acb-\u0acd\u0ae2-\u0ae3\u0ae6-\u0aef\u0b01-\u0b03\u0b3c\u0b3e-\u0b44\u0b47\u0b48\u0b4b-\u0b4d\u0b56\u0b57\u0b5f-\u0b60\u0b66-\u0b6f\u0b82\u0bbe-\u0bc2\u0bc6-\u0bc8\u0bca-\u0bcd\u0bd7\u0be6-\u0bef\u0c01-\u0c03\u0c46-\u0c48\u0c4a-\u0c4d\u0c55\u0c56\u0c62-\u0c63\u0c66-\u0c6f\u0c82\u0c83\u0cbc\u0cbe-\u0cc4\u0cc6-\u0cc8\u0cca-\u0ccd\u0cd5\u0cd6\u0ce2-\u0ce3\u0ce6-\u0cef\u0d02\u0d03\u0d46-\u0d48\u0d57\u0d62-\u0d63\u0d66-\u0d6f\u0d82\u0d83\u0dca\u0dcf-\u0dd4\u0dd6\u0dd8-\u0ddf\u0df2\u0df3\u0e34-\u0e3a\u0e40-\u0e45\u0e50-\u0e59\u0eb4-\u0eb9\u0ec8-\u0ecd\u0ed0-\u0ed9\u0f18\u0f19\u0f20-\u0f29\u0f35\u0f37\u0f39\u0f41-\u0f47\u0f71-\u0f84\u0f86-\u0f87\u0f8d-\u0f97\u0f99-\u0fbc\u0fc6\u1000-\u1029\u1040-\u1049\u1067-\u106d\u1071-\u1074\u1082-\u108d\u108f-\u109d\u135d-\u135f\u170e-\u1710\u1720-\u1730\u1740-\u1750\u1772\u1773\u1780-\u17b2\u17dd\u17e0-\u17e9\u180b-\u180d\u1810-\u1819\u1920-\u192b\u1930-\u193b\u1951-\u196d\u19b0-\u19c0\u19c8-\u19c9\u19d0-\u19d9\u1a00-\u1a15\u1a20-\u1a53\u1a60-\u1a7c\u1a7f-\u1a89\u1a90-\u1a99\u1b46-\u1b4b\u1b50-\u1b59\u1b6b-\u1b73\u1bb0-\u1bb9\u1be6-\u1bf3\u1c00-\u1c22\u1c40-\u1c49\u1c5b-\u1c7d\u1cd0-\u1cd2\u1d00-\u1dbe\u1e01-\u1f15\u200c\u200d\u203f\u2040\u2054\u20d0-\u20dc\u20e1\u20e5-\u20f0\u2d81-\u2d96\u2de0-\u2dff\u3021-\u3028\u3099\u309a\ua640-\ua66d\ua674-\ua67d\ua69f\ua6f0-\ua6f1\ua7f8-\ua800\ua806\ua80b\ua823-\ua827\ua880-\ua881\ua8b4-\ua8c4\ua8d0-\ua8d9\ua8f3-\ua8f7\ua900-\ua909\ua926-\ua92d\ua930-\ua945\ua980-\ua983\ua9b3-\ua9c0\uaa00-\uaa27\uaa40-\uaa41\uaa4c-\uaa4d\uaa50-\uaa59\uaa7b\uaae0-\uaae9\uaaf2-\uaaf3\uabc0-\uabe1\uabec\uabed\uabf0-\uabf9\ufb20-\ufb28\ufe00-\ufe0f\ufe20-\ufe26\ufe33\ufe34\ufe4d-\ufe4f\uff10-\uff19\uff3f" ; private nonASCIIidentifierStart : RegExp = new RegExp ( "[" + this . nonASCIIidentifierStartChars + "]" ) ; private nonASCIIidentifier : RegExp = new RegExp ( "[" + this . nonASCIIidentifierStartChars + this . nonASCIIidentifierChars + "]" ) ; private input : any ; private output_lines : any ; private token_text : any ; private token_type : any ; private last_type : any ; private last_last_text : any ; private indent_string : any ; private flags : any ; private previous_flags : any ; private flag_store : any ; private whitespace : any ; private wordchar : any ; private punct : any ; private parser_pos : any ; private line_starters : any ; private reserved_words : any ; private digits : any ; private prefix : any ; private input_wanted_newline : any ; private output_wrapped : any ; private output_space_before_token : any ; private input_length : any ; private n_newlines : any ; private whitespace_before_token : any ; private opt : any ; private preindent_string : string = '' ; private MODE : any = { BlockStatement : 'BlockStatement' , Statement : 'Statement' , ObjectLiteral : 'ObjectLiteral' , ArrayLiteral : 'ArrayLiteral' , ForInitializer : 'ForInitializer' , Conditional : 'Conditional' , Expression : 'Expression' } ; private handlers : any = { 'TK_START_EXPR' : this . handle_start_expr , 'TK_END_EXPR' : this . handle_end_expr , 'TK_START_BLOCK' : this . handle_start_block , 'TK_END_BLOCK' : this . handle_end_block , 'TK_WORD' : this . handle_word , 'TK_RESERVED' : this . handle_word , 'TK_SEMICOLON' : this . handle_semicolon , 'TK_STRING' : this . handle_string , 'TK_EQUALS' : this . handle_equals , 'TK_OPERATOR' : this . handle_operator , 'TK_COMMA' : this . handle_comma , 'TK_BLOCK_COMMENT' : this . handle_block_comment , 'TK_INLINE_COMMENT' : this . handle_inline_comment , 'TK_COMMENT' : this . handle_comment , 'TK_DOT' : this . handle_dot , 'TK_UNKNOWN' : this . handle_unknown } ; private newline : any = /[\n\r\u2028\u2029]/ ; private lineBreak : any = /\r\n|[\n\r\u2028\u2029]/g ; private isIdentifierStart = ( code ) : boolean => { if ( code < 65 ) return code === 36 ; if ( code < 91 ) return true ; if ( code < 97 ) return code === 95 ; if ( code < 123 ) return true ; return code >= 0xaa && this . nonASCIIidentifierStart . test ( String . fromCharCode ( code ) ) ; } ; private isIdentifierChar = ( code ) : boolean => { if ( code < 48 ) return code === 36 ; if ( code < 58 ) return true ; if ( code < 65 ) return false ; if ( code < 91 ) return true ; if ( code < 97 ) return code === 95 ; if ( code < 123 ) return true ; return code >= 0xaa && this . nonASCIIidentifier . test ( String . fromCharCode ( code ) ) ; } ; private create_flags ( flags_base , mode ) { let next_indent_level = 0 ; if ( flags_base ) { next_indent_level = flags_base . indentation_level ; if ( ! this . just_added_newline ( ) && flags_base . line_indent_level > next_indent_level ) { next_indent_level = flags_base . line_indent_level ; } } let next_flags = { mode : mode , parent : flags_base , last_text : flags_base ? flags_base . last_text : '' , last_word : flags_base ? flags_base . last_word : '' , declaration_statement : false , declaration_assignment : false , in_html_comment : false , multiline_frame : false , if_block : false , else_block : false , do_block : false , do_while : false , in_case_statement : false , in_case : false , case_body : false , indentation_level : next_indent_level , line_indent_level : flags_base ? flags_base . line_indent_level : next_indent_level , start_line_index : this . output_lines . length , had_comment : false , ternary_depth : 0 } ; return next_flags ; } private create_output_line ( ) { return { text : [ ] } ; } private trim_output ( eat_newlines ) { eat_newlines = ( eat_newlines === undefined ) ? false : eat_newlines ; if ( this . output_lines . length ) { this . trim_output_line ( this . output_lines [ this . output_lines . length - 1 ] ) ; while ( eat_newlines && this . output_lines . length > 1 && this . output_lines [ this . output_lines . length - 1 ] . text . length === 0 ) { this . output_lines . pop ( ) ; this . trim_output_line ( this . output_lines [ this . output_lines . length - 1 ] ) ; } } } private trim_output_line ( line ) { while ( line . text . length && ( line . text [ line . text . length - 1 ] === ' ' || line . text [ line . text . length - 1 ] === this . indent_string || line . text [ line . text . length - 1 ] === this . preindent_string ) ) { line . text . pop ( ) ; } } private trim ( s ) { return s . replace ( /^\s+|\s+$/g , '' ) ; } private split_newlines ( s ) { s = s . replace ( /\x0d/g , '' ) ; let out = [ ] ; let idx = s . indexOf ( "\n" ) ; while ( idx !== - 1 ) { out . push ( s . substring ( 0 , idx ) ) ; s = s . substring ( idx + 1 ) ; idx = s . indexOf ( "\n" ) ; } if ( s . length ) { out . push ( s ) ; } return out ; } private just_added_newline ( ) { let line = this . output_lines [ this . output_lines . length - 1 ] ; return line . text . length === 0 ; } private just_added_blankline ( ) { if ( this . just_added_newline ( ) ) { if ( this . output_lines . length === 1 ) { return true ; } let line = this . output_lines [ this . output_lines . length - 2 ] ; return line . text . length === 0 ; } return false ; } private allow_wrap_or_preserved_newline ( force_linewrap ) { force_linewrap = ( force_linewrap === undefined ) ? false : force_linewrap ; if ( this . opt . wrap_line_length && ! force_linewrap ) { let line = this . output_lines [ this . output_lines . length - 1 ] ; let proposed_line_length = 0 ; if ( line . text . length > 0 ) { proposed_line_length = line . text . join ( '' ) . length + this . token_text . length + ( this . output_space_before_token ? 1 : 0 ) ; if ( proposed_line_length >= this . opt . wrap_line_length ) { force_linewrap = true ; } } } if ( ( ( this . opt . preserve_newlines && this . input_wanted_newline ) || force_linewrap ) && ! this . just_added_newline ( ) ) { this . print_newline ( false , true ) ; if ( ! ( this . is_array ( this . flags . mode ) || this . is_expression ( this . flags . mode ) || this . flags . mode === this . MODE . Statement ) ) { this . output_wrapped = true ; } } } private print_newline ( force_newline , preserve_statement_flags ) { this . output_wrapped = false ; this . output_space_before_token = false ; if ( ! preserve_statement_flags ) { if ( this . flags . last_text !== ';' && this . flags . last_text !== ',' && this . flags . last_text !== '=' && this . last_type !== 'TK_OPERATOR' ) { while ( this . flags . mode === this . MODE . Statement && ! this . flags . if_block && ! this . flags . do_block ) { this . restore_mode ( ) ; } } } if ( this . output_lines . length === 1 && this . just_added_newline ( ) ) { return ; } if ( force_newline || ! this . just_added_newline ( ) ) { this . flags . multiline_frame = true ; this . output_lines . push ( this . create_output_line ( ) ) ; } } private print_token_line_indentation ( ) { if ( this . just_added_newline ( ) ) { let line = this . output_lines [ this . output_lines . length - 1 ] ; if ( this . opt . keep_array_indentation && this . is_array ( this . flags . mode ) && this . input_wanted_newline ) { line . text . push ( '' ) ; for ( let i = 0 ; i < this . whitespace_before_token . length ; i += 1 ) { line . text . push ( this . whitespace_before_token [ i ] ) ; } } else { if ( this . preindent_string ) { line . text . push ( this . preindent_string ) ; } this . print_indent_string ( this . flags . indentation_level + ( this . output_wrapped ? 1 : 0 ) ) ; } } } private print_indent_string ( level ) { if ( this . output_lines . length > 1 ) { let line = this . output_lines [ this . output_lines . length - 1 ] ; this . flags . line_indent_level = level ; for ( let i = 0 ; i < level ; i += 1 ) { line . text . push ( this . indent_string ) ; } } } private print_token_space_before ( ) { let line = this . output_lines [ this . output_lines . length - 1 ] ; if ( this . output_space_before_token && line . text . length ) { let last_output = line . text [ line . text . length - 1 ] ; if ( last_output !== ' ' && last_output !== this . indent_string ) { line . text . push ( ' ' ) ; } } } private print_token ( printable_token ) { printable_token = printable_token || this . token_text ; this . print_token_line_indentation ( ) ; this . output_wrapped = false ; this . print_token_space_before ( ) ; this . output_space_before_token = false ; this . output_lines [ this . output_lines . length - 1 ] . text . push ( printable_token ) ; } private indent ( ) { this . flags . indentation_level += 1 ; } private deindent ( ) { if ( this . flags . indentation_level > 0 && ( ( ! this . flags . parent ) || this . flags . indentation_level > this . flags . parent . indentation_level ) ) this . flags . indentation_level -= 1 ; } private remove_redundant_indentation ( frame ) { if ( frame . multiline_frame ) return ; let index = frame . start_line_index ; let splice_index = 0 ; let line ; while ( index < this . output_lines . length ) { line = this . output_lines [ index ] ; index ++ ; if ( line . text . length === 0 ) { continue ; } if ( this . preindent_string && line . text [ 0 ] === this . preindent_string ) { splice_index = 1 ; } else { splice_index = 0 ; } if ( line . text [ splice_index ] === this . indent_string ) { line . text . splice ( splice_index , 1 ) ; } } } private set_mode ( mode ) { if ( this . flags ) { this . flag_store . push ( this . flags ) ; this . previous_flags = this . flags ; } else { this . previous_flags = this . create_flags ( null , mode ) ; } this . flags = this . create_flags ( this . previous_flags , mode ) ; } private is_array ( mode ) { return mode === this . MODE . ArrayLiteral ; } private is_expression ( mode ) { return this . in_array ( mode , [ this . MODE . Expression , this . MODE . ForInitializer , this . MODE . Conditional ] ) ; } private restore_mode ( ) { if ( this . flag_store . length > 0 ) { this . previous_flags = this . flags ; this . flags = this . flag_store . pop ( ) ; if ( this . previous_flags . mode === this . MODE . Statement ) { this . remove_redundant_indentation ( this . previous_flags ) ; } } } private start_of_object_property ( ) { return this . flags . mode === this . MODE . ObjectLiteral && this . flags . last_text === ':' && this . flags . ternary_depth === 0 ; } private start_of_statement ( ) { if ( ( this . last_type === 'TK_RESERVED' && this . in_array ( this . flags . last_text , [ 'var' , 'let' , 'const' ] ) && this . token_type === 'TK_WORD' ) || ( this . last_type === 'TK_RESERVED' && this . flags . last_text === 'do' ) || ( this . last_type === 'TK_RESERVED' && this . flags . last_text === 'return' && ! this . input_wanted_newline ) || ( this . last_type === 'TK_RESERVED' && this . flags . last_text === 'else' && ! ( this . token_type === 'TK_RESERVED' && this . token_text === 'if' ) ) || ( this . last_type === 'TK_END_EXPR' && ( this . previous_flags . mode === this . MODE . ForInitializer || this . previous_flags . mode === this . MODE . Conditional ) ) ) { this . set_mode ( this . MODE . Statement ) ; this . indent ( ) ; if ( this . last_type === 'TK_RESERVED' && this . in_array ( this . flags . last_text , [ 'var' , 'let' , 'const' ] ) && this . token_type === 'TK_WORD' ) { this . flags . declaration_statement = true ; } this . allow_wrap_or_preserved_newline ( this . token_type === 'TK_RESERVED' && this . in_array ( this . token_text , [ 'do' , 'for' , 'if' , 'while' ] ) ) ; this . output_wrapped = false ; return true ; } return false ; } private all_lines_start_with ( lines , c ) { for ( let i = 0 ; i < lines . length ; i ++ ) { let line = this . trim ( lines [ i ] ) ; if ( line . charAt ( 0 ) !== c ) { return false ; } } return true ; } private is_special_word ( word ) { return this . in_array ( word , [ 'case' , 'return' , 'do' , 'if' , 'throw' , 'else' ] ) ; } private in_array ( what , arr ) { for ( let i = 0 ; i < arr . length ; i += 1 ) { if ( arr [ i ] === what ) { return true ; } } return false ; } private unescape_string ( s ) { let esc = false ; let out = '' ; let pos = 0 ; let s_hex = '' ; let escaped = 0 ; let c ; while ( esc || pos < s . length ) { c = s . charAt ( pos ) ; pos ++ ; if ( esc ) { esc = false ; if ( c === 'x' ) { s_hex = s . substr ( pos , 2 ) ; pos += 2 ; } else if ( c === 'u' ) { s_hex = s . substr ( pos , 4 ) ; pos += 4 ; } else { out += '\\' + c ; continue ; } if ( ! s_hex . match ( /^[0123456789abcdefABCDEF]+$/ ) ) { return s ; } escaped = parseInt ( s_hex , 16 ) ; if ( escaped >= 0x00 && escaped < 0x20 ) { if ( c === 'x' ) { out += '\\x' + s_hex ; } else { out += '\\u' + s_hex ; } continue ; } else if ( escaped === 0x22 || escaped === 0x27 || escaped === 0x5c ) { out += '\\' + String . fromCharCode ( escaped ) ; } else if ( c === 'x' && escaped > 0x7e && escaped <= 0xff ) { return s ; } else { out += String . fromCharCode ( escaped ) ; } } else if ( c === '\\' ) { esc = true ; } else { out += c ; } } return out ; } private is_next ( find ) { let local_pos = this . parser_pos ; let c = this . input . charAt ( local_pos ) ; while ( this . in_array ( c , this . whitespace ) && c !== find ) { local_pos ++ ; if ( local_pos >= this . input_length ) { return false ; } c = this . input . charAt ( local_pos ) ; } return c === find ; } private get_next_token ( ) { let i ; let resulting_string ; this . n_newlines = 0 ; if ( this . parser_pos >= this . input_length ) { return [ '' , 'TK_EOF' ] ; } this . input_wanted_newline = false ; this . whitespace_before_token = [ ] ; let c = this . input . charAt ( this . parser_pos ) ; this . parser_pos += 1 ; while ( this . in_array ( c , this . whitespace ) ) { if ( c === '\n' ) { this . n_newlines += 1 ; this . whitespace_before_token = [ ] ; } else if ( this . n_newlines ) { if ( c === this . indent_string ) { this . whitespace_before_token . push ( this . indent_string ) ; } else if ( c !== '\r' ) { this . whitespace_before_token . push ( ' ' ) ; } } if ( this . parser_pos >= this . input_length ) { return [ '' , 'TK_EOF' ] ; } c = this . input . charAt ( this . parser_pos ) ; this . parser_pos += 1 ; } if ( this . isIdentifierChar ( this . input . charCodeAt ( this . parser_pos - 1 ) ) ) { if ( this . parser_pos < this . input_length ) { while ( this . isIdentifierChar ( this . input . charCodeAt ( this . parser_pos ) ) ) { c += this . input . charAt ( this . parser_pos ) ; this . parser_pos += 1 ; if ( this . parser_pos === this . input_length ) { break ; } } } if ( this . parser_pos !== this . input_length && c . match ( /^[0-9]+[Ee]$/ ) && ( this . input . charAt ( this . parser_pos ) === '-' || this . input . charAt ( this . parser_pos ) === '+' ) ) { let sign = this . input . charAt ( this . parser_pos ) ; this . parser_pos += 1 ; let t = this . get_next_token ( ) ; c += sign + t [ 0 ] ; return [ c , 'TK_WORD' ] ; } if ( ! ( this . last_type === 'TK_DOT' || ( this . last_type === 'TK_RESERVED' && this . in_array ( this . flags . last_text , [ 'set' , 'get' ] ) ) ) && this . in_array ( c , this . reserved_words ) ) { if ( c === 'in' ) { return [ c , 'TK_OPERATOR' ] ; } return [ c , 'TK_RESERVED' ] ; } return [ c , 'TK_WORD' ] ; } if ( c === '(' || c === '[' ) { return [ c , 'TK_START_EXPR' ] ; } if ( c === ')' || c === ']' ) { return [ c , 'TK_END_EXPR' ] ; } if ( c === '{' ) { return [ c , 'TK_START_BLOCK' ] ; } if ( c === '}' ) { return [ c , 'TK_END_BLOCK' ] ; } if ( c === ';' ) { return [ c , 'TK_SEMICOLON' ] ; } if ( c === '/' ) { let comment = '' ; let inline_comment = true ; if ( this . input . charAt ( this . parser_pos ) === '*' ) { this . parser_pos += 1 ; if ( this . parser_pos < this . input_length ) { while ( this . parser_pos < this . input_length && ! ( this . input . charAt ( this . parser_pos ) === '*' && this . input . charAt ( this . parser_pos + 1 ) && this . input . charAt ( this . parser_pos + 1 ) === '/' ) ) { c = this . input . charAt ( this . parser_pos ) ; comment += c ; if ( c === "\n" || c === "\r" ) { inline_comment = false ; } this . parser_pos += 1 ; if ( this . parser_pos >= this . input_length ) { break ; } } } this . parser_pos += 2 ; if ( inline_comment && this . n_newlines === 0 ) { return [ '/*' + comment + '*/' , 'TK_INLINE_COMMENT' ] ; } else { return [ '/*' + comment + '*/' , 'TK_BLOCK_COMMENT' ] ; } } if ( this . input . charAt ( this . parser_pos ) === '/' ) { comment = c ; while ( this . input . charAt ( this . parser_pos ) !== '\r' && this . input . charAt ( this . parser_pos ) !== '\n' ) { comment += this . input . charAt ( this . parser_pos ) ; this . parser_pos += 1 ; if ( this . parser_pos >= this . input_length ) { break ; } } return [ comment , 'TK_COMMENT' ] ; } } if ( c === '`' || c === "'" || c === '"' || ( ( c === '/' ) || ( this . opt . e4x && c === "<" && this . input . slice ( this . parser_pos - 1 ) . match ( /^<([-a-zA-Z:0-9_.]+|{[^{}]*}|!\[CDATA\[[\s\S]*?\]\])\s*([-a-zA-Z:0-9_.]+=('[^']*'|"[^"]*"|{[^{}]*})\s*)*\/?\s*>/ ) ) ) && ( ( this . last_type === 'TK_RESERVED' && this . is_special_word ( this . flags . last_text ) ) || ( this . last_type === 'TK_END_EXPR' && this . in_array ( this . previous_flags . mode , [ this . MODE . Conditional , this . MODE . ForInitializer ] ) ) || ( this . in_array ( this . last_type , [ 'TK_COMMENT' , 'TK_START_EXPR' , 'TK_START_BLOCK' , 'TK_END_BLOCK' , 'TK_OPERATOR' , 'TK_EQUALS' , 'TK_EOF' , 'TK_SEMICOLON' , 'TK_COMMA' ] ) ) ) ) { let sep = c , esc = false , has_char_escapes = false ; resulting_string = c ; if ( this . parser_pos < this . input_length ) { if ( sep === '/' ) { let in_char_class = false ; while ( esc || in_char_class || this . input . charAt ( this . parser_pos ) !== sep ) { resulting_string += this . input . charAt ( this . parser_pos ) ; if ( ! esc ) { esc = this . input . charAt ( this . parser_pos ) === '\\' ; if ( this . input . charAt ( this . parser_pos ) === '[' ) { in_char_class = true ; } else if ( this . input . charAt ( this . parser_pos ) === ']' ) { in_char_class = false ; } } else { esc = false ; } this . parser_pos += 1 ; if ( this . parser_pos >= this . input_length ) { return [ resulting_string , 'TK_STRING' ] ; } } } else if ( this . opt . e4x && sep === '<' ) { let xmlRegExp = /<(\/?)([-a-zA-Z:0-9_.]+|{[^{}]*}|!\[CDATA\[[\s\S]*?\]\])\s*([-a-zA-Z:0-9_.]+=('[^']*'|"[^"]*"|{[^{}]*})\s*)*(\/?)\s*>/g ; let xmlStr = this . input . slice ( this . parser_pos - 1 ) ; let match = xmlRegExp . exec ( xmlStr ) ; if ( match && match . index === 0 ) { let rootTag = match [ 2 ] ; let depth = 0 ; while ( match ) { let isEndTag = ! ! match [ 1 ] ; let tagName = match [ 2 ] ; let isSingletonTag = ( ! ! match [ match . length - 1 ] ) || ( tagName . slice ( 0 , 8 ) === "![CDATA[" ) ; if ( tagName === rootTag && ! isSingletonTag ) { if ( isEndTag ) { -- depth ; } else { ++ depth ; } } if ( depth <= 0 ) { break ; } match = xmlRegExp . exec ( xmlStr ) ; } let xmlLength = match ? match . index + match [ 0 ] . length : xmlStr . length ; this . parser_pos += xmlLength - 1 ; return [ xmlStr . slice ( 0 , xmlLength ) , "TK_STRING" ] ; } } else { while ( esc || this . input . charAt ( this . parser_pos ) !== sep ) { resulting_string += this . input . charAt ( this . parser_pos ) ; if ( esc ) { if ( this . input . charAt ( this . parser_pos ) === 'x' || this . input . charAt ( this . parser_pos ) === 'u' ) { has_char_escapes = true ; } esc = false ; } else { esc = this . input . charAt ( this . parser_pos ) === '\\' ; } this . parser_pos += 1 ; if ( this . parser_pos >= this . input_length ) { return [ resulting_string , 'TK_STRING' ] ; } } } } this . parser_pos += 1 ; resulting_string += sep ; if ( has_char_escapes && this . opt . unescape_strings ) { resulting_string = this . unescape_string ( resulting_string ) ; } if ( sep === '/' ) { while ( this . parser_pos < this . input_length && this . in_array ( this . input . charAt ( this . parser_pos ) , this . wordchar ) ) { resulting_string += this . input . charAt ( this . parser_pos ) ; this . parser_pos += 1 ; } } return [ resulting_string , 'TK_STRING' ] ; } if ( c === '#' ) { if ( this . output_lines . length === 1 && this . output_lines [ 0 ] . text . length === 0 && this . input . charAt ( this . parser_pos ) === '!' ) { resulting_string = c ; while ( this . parser_pos < this . input_length && c !== '\n' ) { c = this . input . charAt ( this . parser_pos ) ; resulting_string += c ; this . parser_pos += 1 ; } return [ this . trim ( resulting_string ) + '\n' , 'TK_UNKNOWN' ] ; } let sharp = '#' ; if ( this . parser_pos < this . input_length && this . in_array ( this . input . charAt ( this . parser_pos ) , this . digits ) ) { do { c = this . input . charAt ( this . parser_pos ) ; sharp += c ; this . parser_pos += 1 ; } while ( this . parser_pos < this . input_length && c !== '#' && c !== '=' ) ; if ( c === '#' ) { } else if ( this . input . charAt ( this . parser_pos ) === '[' && this . input . charAt ( this . parser_pos + 1 ) === ']' ) { sharp += '[]' ; this . parser_pos += 2 ; } else if ( this . input . charAt ( this . parser_pos ) === '{' && this . input . charAt ( this . parser_pos + 1 ) === '}' ) { sharp += '{}' ; this . parser_pos += 2 ; } return [ sharp , 'TK_WORD' ] ; } } if ( c === '<' && this . input . substring ( this . parser_pos - 1 , this . parser_pos + 3 ) === '<!--' ) { this . parser_pos += 3 ; c = '<!--' ; while ( this . input . charAt ( this . parser_pos ) !== '\n' && this . parser_pos < this . input_length ) { c += this . input . charAt ( this . parser_pos ) ; this . parser_pos ++ ; } this . flags . in_html_comment = true ; return [ c , 'TK_COMMENT' ] ; } if ( c === '-' && this . flags . in_html_comment && this . input . substring ( this . parser_pos - 1 , this . parser_pos + 2 ) === '-->' ) { this . flags . in_html_comment = false ; this . parser_pos += 2 ; return [ '-->' , 'TK_COMMENT' ] ; } if ( c === '.' ) { return [ c , 'TK_DOT' ] ; } if ( this . in_array ( c , this . punct ) ) { while ( this . parser_pos < this . input_length && this . in_array ( c + this . input . charAt ( this . parser_pos ) , this . punct ) ) { c += this . input . charAt ( this . parser_pos ) ; this . parser_pos += 1 ; if ( this . parser_pos >= this . input_length ) { break ; } } if ( c === ',' ) { return [ c , 'TK_COMMA' ] ; } else if ( c === '=' ) { return [ c , 'TK_EQUALS' ] ; } else { return [ c , 'TK_OPERATOR' ] ; } } return [ c , 'TK_UNKNOWN' ] ; } private handle_start_expr ( ) { if ( this . start_of_statement ( ) ) { } let next_mode = this . MODE . Expression ; if ( this . token_text === '[' ) { if ( this . last_type === 'TK_WORD' || this . flags . last_text === ')' ) { if ( this . last_type === 'TK_RESERVED' && this . in_array ( this . flags . last_text , this . line_starters ) ) { this . output_space_before_token = true ; } this . set_mode ( next_mode ) ; this . print_token ( null ) ; this . indent ( ) ; if ( this . opt . space_in_paren ) { this . output_space_before_token = true ; } return ; } next_mode = this . MODE . ArrayLiteral ; if ( this . is_array ( this . flags . mode ) ) { if ( this . flags . last_text === '[' || ( this . flags . last_text === ',' && ( this . last_last_text === ']' || this . last_last_text === '}' ) ) ) { if ( ! this . opt . keep_array_indentation ) { this . print_newline ( false , true ) ; } } } } else { if ( this . last_type === 'TK_RESERVED' && this . flags . last_text === 'for' ) { next_mode = this . MODE . ForInitializer ; } else if ( this . last_type === 'TK_RESERVED' && this . in_array ( this . flags . last_text , [ 'if' , 'while' ] ) ) { next_mode = this . MODE . Conditional ; } else { } } if ( this . flags . last_text === ';' || this . last_type === 'TK_START_BLOCK' ) { this . print_newline ( false , true ) ; } else if ( this . last_type === 'TK_END_EXPR' || this . last_type === 'TK_START_EXPR' || this . last_type === 'TK_END_BLOCK' || this . flags . last_text === '.' ) { this . allow_wrap_or_preserved_newline ( this . input_wanted_newline ) ; this . output_wrapped = false ; } else if ( ! ( this . last_type === 'TK_RESERVED' && this . token_text === '(' ) && this . last_type !== 'TK_WORD' && this . last_type !== 'TK_OPERATOR' ) { this . output_space_before_token = true ; } else if ( this . last_type === 'TK_RESERVED' && ( this . flags . last_word === 'function' || this . flags . last_word === 'typeof' ) ) { if ( this . opt . jslint_happy ) { this . output_space_before_token = true ; } } else if ( this . last_type === 'TK_RESERVED' && ( this . in_array ( this . flags . last_text , this . line_starters ) || this . flags . last_text === 'catch' ) ) { if ( this . opt . space_before_conditional ) { this . output_space_before_token = true ; } } if ( this . token_text === '(' ) { if ( this . last_type === 'TK_EQUALS' || this . last_type === 'TK_OPERATOR' ) { if ( ! this . start_of_object_property ( ) ) { this . allow_wrap_or_preserved_newline ( undefined ) ; } } } this . set_mode ( next_mode ) ; this . print_token ( null ) ; if ( this . opt . space_in_paren ) { this . output_space_before_token = true ; } this . indent ( ) ; } private handle_end_expr ( ) { while ( this . flags . mode === this . MODE . Statement ) { this . restore_mode ( ) ; } if ( this . flags . multiline_frame ) { this . allow_wrap_or_preserved_newline ( this . token_text === ']' && this . is_array ( this . flags . mode ) && ! this . opt . keep_array_indentation ) ; this . output_wrapped = false ; } if ( this . opt . space_in_paren ) { if ( this . last_type === 'TK_START_EXPR' && ! this . opt . space_in_empty_paren ) { this . trim_output ( undefined ) ; this . output_space_before_token = false ; } else { this . output_space_before_token = true ; } } if ( this . token_text === ']' && this . opt . keep_array_indentation ) { this . print_token ( null ) ; this . restore_mode ( ) ; } else { this . restore_mode ( ) ; this . print_token ( null ) ; } this . remove_redundant_indentation ( this . previous_flags ) ; if ( this . flags . do_while && this . previous_flags . mode === this . MODE . Conditional ) { this . previous_flags . mode = this . MODE . Expression ; this . flags . do_block = false ; this . flags . do_while = false ; } } private handle_start_block ( ) { this . set_mode ( this . MODE . BlockStatement ) ; let empty_braces = this . is_next ( '}' ) ; let empty_anonymous_function = empty_braces && this . flags . last_word === 'function' && this . last_type === 'TK_END_EXPR' ; if ( this . opt . brace_style === "expand" ) { if ( this . last_type !== 'TK_OPERATOR' && ( empty_anonymous_function || this . last_type === 'TK_EQUALS' || ( this . last_type === 'TK_RESERVED' && this . is_special_word ( this . flags . last_text ) && this . flags . last_text !== 'else' ) ) ) { this . output_space_before_token = true ; } else { this . print_newline ( false , true ) ; } } else { if ( this . last_type !== 'TK_OPERATOR' && this . last_type !== 'TK_START_EXPR' ) { if ( this . last_type === 'TK_START_BLOCK' ) { this . print_newline ( false , true ) ; } else { this . output_space_before_token = true ; } } else { if ( this . is_array ( this . previous_flags . mode ) && this . flags . last_text === ',' ) { if ( this . last_last_text === '}' ) { this . output_space_before_token = true ; } else { this . print_newline ( false , true ) ; } } } } this . print_token ( null ) ; this . indent ( ) ; } private handle_end_block ( ) { while ( this . flags . mode === this . MODE . Statement ) { this . restore_mode ( ) ; } let empty_braces = this . last_type === 'TK_START_BLOCK' ; if ( this . opt . brace_style === "expand" ) { if ( ! empty_braces ) { this . print_newline ( false , true ) ; } } else { if ( ! empty_braces ) { if ( this . is_array ( this . flags . mode ) && this . opt . keep_array_indentation ) { this . opt . keep_array_indentation = false ; this . print_newline ( false , true ) ; this . opt . keep_array_indentation = true ; } else { this . print_newline ( false , true ) ; } } } this . restore_mode ( ) ; this . print_token ( null ) ; } private handle_word ( ) { if ( this . start_of_statement ( ) ) { } else if ( this . input_wanted_newline && ! this . is_expression ( this . flags . mode ) && ( this . last_type !== 'TK_OPERATOR' || ( this . flags . last_text === '--' || this . flags . last_text === '++' ) ) && this . last_type !== 'TK_EQUALS' && ( this . opt . preserve_newlines || ! ( this . last_type === 'TK_RESERVED' && this . in_array ( this . flags . last_text , [ 'var' , 'let' , 'const' , 'set' , 'get' ] ) ) ) ) { this . print_newline ( false , true ) ; } if ( this . flags . do_block && ! this . flags . do_while ) { if ( this . token_type === 'TK_RESERVED' && this . token_text === 'while' ) { this . output_space_before_token = true ; this . print_token ( null ) ; this . output_space_before_token = true ; this . flags . do_while = true ; return ; } else { this . print_newline ( false , true ) ; this . flags . do_block = false ; } } if ( this . flags . if_block ) { if ( ! this . flags . else_block && ( this . token_type === 'TK_RESERVED' && this . token_text === 'else' ) ) { this . flags . else_block = true ; } else { while ( this . flags . mode === this . MODE . Statement ) { this . restore_mode ( ) ; } this . flags . if_block = false ; this . flags . else_block = false ; } } if ( this . token_type === 'TK_RESERVED' && ( this . token_text === 'case' || ( this . token_text === 'default' && this . flags . in_case_statement ) ) ) { this . print_newline ( false , true ) ; if ( this . flags . case_body || this . opt . jslint_happy ) { this . deindent ( ) ; this . flags . case_body = false ; } this . print_token ( null ) ; this . flags . in_case = true ; this . flags . in_case_statement = true ; return ; } if ( this . token_type === 'TK_RESERVED' && this . token_text === 'function' ) { if ( this . in_array ( this . flags . last_text , [ '}' , ';' ] ) || ( this . just_added_newline ( ) && ! this . in_array ( this . flags . last_text , [ '{' , ':' , '=' , ',' ] ) ) ) { if ( ! this . just_added_blankline ( ) && ! this . flags . had_comment ) { this . print_newline ( false , true ) ; this . print_newline ( true , true ) ; } } if ( this . last_type === 'TK_RESERVED' || this . last_type === 'TK_WORD' ) { if ( this . last_type === 'TK_RESERVED' && this . in_array ( this . flags . last_text , [ 'get' , 'set' , 'new' , 'return' ] ) ) { this . output_space_before_token = true ; } else { this . print_newline ( false , true ) ; } } else if ( this . last_type === 'TK_OPERATOR' || this . flags . last_text === '=' ) { this . output_space_before_token = true ; } else if ( this . is_expression ( this . flags . mode ) ) { } else { this . print_newline ( false , true ) ; } } if ( this . last_type === 'TK_COMMA' || this . last_type === 'TK_START_EXPR' || this . last_type === 'TK_EQUALS' || this . last_type === 'TK_OPERATOR' ) { if ( ! this . start_of_object_property ( ) ) { this . allow_wrap_or_preserved_newline ( undefined ) ; } } if ( this . token_type === 'TK_RESERVED' && this . token_text === 'function' ) { this . print_token ( null ) ; this . flags . last_word = this . token_text ; return ; } this . prefix = 'NONE' ; if ( this . last_type === 'TK_END_BLOCK' ) { if ( ! ( this . token_type === 'TK_RESERVED' && this . in_array ( this . token_text , [ 'else' , 'catch' , 'finally' ] ) ) ) { this . prefix = 'NEWLINE' ; } else { if ( this . opt . brace_style === "expand" || this . opt . brace_style === "end-expand" ) { this . prefix = 'NEWLINE' ; } else { this . prefix = 'SPACE' ; this . output_space_before_token = true ; } } } else if ( this . last_type === 'TK_SEMICOLON' && this . flags . mode === this . MODE . BlockStatement ) { this . prefix = 'NEWLINE' ; } else if ( this . last_type === 'TK_SEMICOLON' && this . is_expression ( this . flags . mode ) ) { this . prefix = 'SPACE' ; } else if ( this . last_type === 'TK_STRING' ) { this . prefix = 'NEWLINE' ; } else if ( this . last_type === 'TK_RESERVED' || this . last_type === 'TK_WORD' ) { this . prefix = 'SPACE' ; } else if ( this . last_type === 'TK_START_BLOCK' ) { this . prefix = 'NEWLINE' ; } else if ( this . last_type === 'TK_END_EXPR' ) { this . output_space_before_token = true ; this . prefix = 'NEWLINE' ; } if ( this . token_type === 'TK_RESERVED' && this . in_array ( this . token_text , this . line_starters ) && this . flags . last_text !== ')' ) { if ( this . flags . last_text === 'else' ) { this . prefix = 'SPACE' ; } else { this . prefix = 'NEWLINE' ; } } if ( this . token_type === 'TK_RESERVED' && this . in_array ( this . token_text , [ 'else' , 'catch' , 'finally' ] ) ) { if ( this . last_type !== 'TK_END_BLOCK' || this . opt . brace_style === "expand" || this . opt . brace_style === "end-expand" ) { this . print_newline ( false , true ) ; } else { this . trim_output ( true ) ; let line = this . output_lines [ this . output_lines . length - 1 ] ; if ( line . text [ line . text . length - 1 ] !== '}' ) { this . print_newline ( false , true ) ; } this . output_space_before_token = true ; } } else if ( this . prefix === 'NEWLINE' ) { if ( this . last_type === 'TK_RESERVED' && this . is_special_word ( this . flags . last_text ) ) { this . output_space_before_token = true ; } else if ( this . last_type !== 'TK_END_EXPR' ) { if ( ( this . last_type !== 'TK_START_EXPR' || ! ( this . token_type === 'TK_RESERVED' && this . in_array ( this . token_text , [ 'var' , 'let' , 'const' ] ) ) ) && this . flags . last_text !== ':' ) { if ( this . token_type === 'TK_RESERVED' && this . token_text === 'if' && this . flags . last_word === 'else' && this . flags . last_text !== '{' ) { this . output_space_before_token = true ; } else { this . print_newline ( false , true ) ; } } } else if ( this . token_type === 'TK_RESERVED' && this . in_array ( this . token_text , this . line_starters ) && this . flags . last_text !== ')' ) { this . print_newline ( false , true ) ; } } else if ( this . is_array ( this . flags . mode ) && this . flags . last_text === ',' && this . last_last_text === '}' ) { this . print_newline ( false , true ) ; } else if ( this . prefix === 'SPACE' ) { this . output_space_before_token = true ; } this . print_token ( null ) ; this . flags . last_word = this . token_text ; if ( this . token_type === 'TK_RESERVED' && this . token_text === 'do' ) { this . flags . do_block = true ; } if ( this . token_type === 'TK_RESERVED' && this . token_text === 'if' ) { this . flags . if_block = true ; } } private handle_semicolon ( ) { if ( this . start_of_statement ( ) ) { this . output_space_before_token = false ; } while ( this . flags . mode === this . MODE . Statement && ! this . flags . if_block && ! this . flags . do_block ) { this . restore_mode ( ) ; } this . print_token ( null ) ; if ( this . flags . mode === this . MODE . ObjectLiteral ) { this . flags . mode = this . MODE . BlockStatement ; } } private handle_string ( ) { if ( this . start_of_statement ( ) ) { this . output_space_before_token = true ; } else if ( this . last_type === 'TK_RESERVED' || this . last_type === 'TK_WORD' ) { this . output_space_before_token = true ; } else if ( this . last_type === 'TK_COMMA' || this . last_type === 'TK_START_EXPR' || this . last_type === 'TK_EQUALS' || this . last_type === 'TK_OPERATOR' ) { if ( ! this . start_of_object_property ( ) ) { this . allow_wrap_or_preserved_newline ( undefined ) ; } } else { this . print_newline ( false , true ) ; } this . print_token ( null ) ; } private handle_equals ( ) { if ( this . flags . declaration_statement ) { this . flags . declaration_assignment = true ; } this . output_space_before_token = true ; this . print_token ( null ) ; this . output_space_before_token = true ; } private handle_comma ( ) { if ( this . flags . declaration_statement ) { if ( this . is_expression ( this . flags . parent . mode ) ) { this . flags . declaration_assignment = false ; } this . print_token ( null ) ; if ( this . flags . declaration_assignment ) { this . flags . declaration_assignment = false ; this . print_newline ( false , true ) ; } else { this . output_space_before_token = true ; } return ; } if ( this . last_type === 'TK_END_BLOCK' && this . flags . mode !== this . MODE . Expression ) { this . print_token ( null ) ; if ( this . flags . mode === this . MODE . ObjectLiteral && this . flags . last_text === '}' ) { this . print_newline ( false , true ) ; } else { this . output_space_before_token = true ; } } else { if ( this . flags . mode === this . MODE . ObjectLiteral ) { this . print_token ( null ) ; this . print_newline ( false , true ) ; } else { this . print_token ( null ) ; this . output_space_before_token = true ; } } } private handle_operator ( ) { let space_before = true ; let space_after = true ; if ( this . last_type === 'TK_RESERVED' && this . is_special_word ( this . flags . last_text ) ) { this . output_space_before_token = true ; this . print_token ( null ) ; return ; } if ( this . token_text === '*' && this . last_type === 'TK_DOT' && ! this . last_last_text . match ( /^\d+$/ ) ) { this . print_token ( null ) ; return ; } if ( this . token_text === ':' && this . flags . in_case ) { this . flags . case_body = true ; this . indent ( ) ; this . print_token ( null ) ; this . print_newline ( false , true ) ; this . flags . in_case = false ; return ; } if ( this . token_text === '::' ) { this . print_token ( null ) ; return ; } if ( this . input_wanted_newline && ( this . token_text === '--' || this . token_text === '++' ) ) { this . print_newline ( false , true ) ; } if ( this . last_type === 'TK_OPERATOR' ) { this . allow_wrap_or_preserved_newline ( undefined ) ; } if ( this . in_array ( this . token_text , [ '--' , '++' , '!' ] ) || ( this . in_array ( this . token_text , [ '-' , '+' ] ) && ( this . in_array ( this . last_type , [ 'TK_START_BLOCK' , 'TK_START_EXPR' , 'TK_EQUALS' , 'TK_OPERATOR' ] ) || this . in_array ( this . flags . last_text , this . line_starters ) || this . flags . last_text === ',' ) ) ) { space_before = false ; space_after = false ; if ( this . flags . last_text === ';' && this . is_expression ( this . flags . mode ) ) { space_before = true ; } if ( this . last_type === 'TK_RESERVED' ) { space_before = true ; } if ( ( this . flags . mode === this . MODE . BlockStatement || this . flags . mode === this . MODE . Statement ) && ( this . flags . last_text === '{' || this . flags . last_text === ';' ) ) { this . print_newline ( false , true ) ; } } else if ( this . token_text === ':' ) { if ( this . flags . ternary_depth === 0 ) { if ( this . flags . mode === this . MODE . BlockStatement ) { this . flags . mode = this . MODE . ObjectLiteral ; } space_before = false ; } else { this . flags . ternary_depth -= 1 ; } } else if ( this . token_text === '?' ) { this . flags . ternary_depth += 1 ; } this . output_space_before_token = this . output_space_before_token || space_before ; this . print_token ( null ) ; this . output_space_before_token = space_after ; } private handle_block_comment ( ) { let lines = this . split_newlines ( this . token_text ) ; let j ; let javadoc = false ; this . print_newline ( false , true ) ; if ( lines . length > 1 ) { if ( this . all_lines_start_with ( lines . slice ( 1 ) , '*' ) ) { javadoc = true ; } } this . print_token ( lines [ 0 ] ) ; for ( j = 1 ; j < lines . length ; j ++ ) { this . print_newline ( false , true ) ; if ( javadoc ) { this . print_token ( ' ' + this . trim ( lines [ j ] ) ) ; } else { this . output_lines [ this . output_lines . length - 1 ] . text . push ( lines [ j ] ) ; } } this . print_newline ( false , true ) ; } private handle_inline_comment ( ) { this . output_space_before_token = true ; this . print_token ( null ) ; this . output_space_before_token = true ; } private handle_comment ( ) { if ( this . input_wanted_newline ) { this . print_newline ( false , true ) ; } else { this . trim_output ( true ) ; } this . output_space_before_token = true ; this . print_token ( null ) ; this . print_newline ( false , true ) ; } private handle_dot ( ) { if ( this . last_type === 'TK_RESERVED' && this . is_special_word ( this . flags . last_text ) ) { this . output_space_before_token = true ; } else { this . allow_wrap_or_preserved_newline ( this . flags . last_text === ')' && this . opt . break_chained_methods ) ; } this . print_token ( null ) ; } private handle_unknown ( ) { this . print_token ( null ) ; if ( this . token_text [ this . token_text . length - 1 ] === '\n' ) { this . print_newline ( false , true ) ; } } private beautify ( ) { let t ; let i ; let keep_whitespace ; let sweet_code ; while ( true ) { t = this . get_next_token ( ) ; this . token_text = t [ 0 ] ; this . token_type = t [ 1 ] ; if ( this . token_type === 'TK_EOF' ) { while ( this . flags . mode === this . MODE . Statement ) { this . restore_mode ( ) ; } break ; } keep_whitespace = this . opt . keep_array_indentation && this . is_array ( this . flags . mode ) ; this . input_wanted_newline = this . n_newlines > 0 ; if ( keep_whitespace ) { for ( i = 0 ; i < this . n_newlines ; i += 1 ) { this . print_newline ( i > 0 , true ) ; } } else { if ( this . opt . max_preserve_newlines && this . n_newlines > this . opt . max_preserve_newlines ) { this . n_newlines = this . opt . max_preserve_newlines ; } if ( this . opt . preserve_newlines ) { if ( this . n_newlines > 1 ) { this . print_newline ( false , true ) ; for ( i = 1 ; i < this . n_newlines ; i += 1 ) { this . print_newline ( false , true ) ; } } } } switch ( this . token_type ) { case 'TK_START_EXPR' : this . handle_start_expr ( ) ; break ; case 'TK_END_EXPR' : this . handle_end_expr ( ) ; break ; case 'TK_START_BLOCK' : this . handle_start_block ( ) ; break ; case 'TK_END_BLOCK' : this . handle_end_block ( ) ; break ; case 'TK_WORD' : this . handle_word ( ) ; break ; case 'TK_RESERVED' : this . handle_word ( ) ; break ; case 'TK_SEMICOLON' : this . handle_semicolon ( ) ; break ; case 'TK_STRING' : this . handle_string ( ) ; break ; case 'TK_EQUALS' : this . handle_equals ( ) ; break ; case 'TK_OPERATOR' : this . handle_operator ( ) ; break ; case 'TK_COMMA' : this . handle_comma ( ) ; break ; case 'TK_BLOCK_COMMENT' : this . handle_block_comment ( ) ; break ; case 'TK_INLINE_COMMENT' : this . handle_inline_comment ( ) ; break ; case 'TK_COMMENT' : this . handle_comment ( ) ; break ; case 'TK_DOT' : this . handle_dot ( ) ; break ; case 'TK_UNKNOWN' : this . handle_unknown ( ) ; break ; } if ( this . token_type !== 'TK_INLINE_COMMENT' && this . token_type !== 'TK_COMMENT' && this . token_type !== 'TK_BLOCK_COMMENT' && this . token_type !== 'TK_UNKNOWN' ) { this . last_last_text = this . flags . last_text ; this . last_type = this . token_type ; this . flags . last_text = this . token_text ; } this . flags . had_comment = ( this . token_type === 'TK_INLINE_COMMENT' || this . token_type === 'TK_COMMENT' || this . token_type === 'TK_BLOCK_COMMENT' ) ; } sweet_code = this . output_lines [ 0 ] . text . join ( '' ) ; for ( let line_index = 1 ; line_index < this . output_lines . length ; line_index ++ ) { sweet_code += '\n' + this . output_lines [ line_index ] . text . join ( '' ) ; } sweet_code = sweet_code . replace ( /[\r\n ]+$/ , '' ) ; return sweet_code ; } public js_beautify ( js_source_text , options ) { this . whitespace = "\n\r\t " . split ( '' ) ; this . wordchar = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_$' . split ( '' ) ; this . digits = '0123456789' . split ( '' ) ; this . punct = '+ - * / % & ++ -- = += -= *= /= %= == === != !== > < >= <= >> << >>> >>>= >>= <<= && &= | || ! , : ? ^ ^= |= :: =>' ; this . punct += ' <%= <% %> <?= <? ?>' ; this . punct = this . punct . split ( ' ' ) ; this . line_starters = 'continue,try,throw,return,var,let,const,if,switch,case,default,for,while,break,function' . split ( ',' ) ; this . reserved_words = this . line_starters . concat ( [ 'do' , 'in' , 'else' , 'get' , 'set' , 'new' , 'catch' , 'finally' , 'typeof' ] ) ; options = options ? options : { } ; this . opt = { } ; if ( options . space_after_anon_function !== undefined && options . jslint_happy === undefined ) { options . jslint_happy = options . space_after_anon_function ; } if ( options . braces_on_own_line !== undefined ) { this . opt . brace_style = options . braces_on_own_line ? "expand" : "collapse" ; } this . opt . brace_style = options . brace_style ? options . brace_style : ( this . opt . brace_style ? this . opt . brace_style : "collapse" ) ; if ( this . opt . brace_style === "expand-strict" ) { this . opt . brace_style = "expand" ; } this . opt . indent_size = options . indent_size ? parseInt ( options . indent_size , 10 ) : 4 ; this . opt . indent_char = options . indent_char ? options . indent_char : ' ' ; this . opt . preserve_newlines = ( options . preserve_newlines === undefined ) ? true : options . preserve_newlines ; this . opt . break_chained_methods = ( options . break_chained_methods === undefined ) ? false : options . break_chained_methods ; this . opt . max_preserve_newlines = ( options . max_preserve_newlines === undefined ) ? 0 : parseInt ( options . max_preserve_newlines , 10 ) ; this . opt . space_in_paren = ( options . space_in_paren === undefined ) ? false : options . space_in_paren ; this . opt . space_in_empty_paren = ( options . space_in_empty_paren === undefined ) ? false : options . space_in_empty_paren ; this . opt . jslint_happy = ( options . jslint_happy === undefined ) ? false : options . jslint_happy ; this . opt . keep_array_indentation = ( options . keep_array_indentation === undefined ) ? false : options . keep_array_indentation ; this . opt . space_before_conditional = ( options . space_before_conditional === undefined ) ? true : options . space_before_conditional ; this . opt . unescape_strings = ( options . unescape_strings === undefined ) ? false : options . unescape_strings ; this . opt . wrap_line_length = ( options . wrap_line_length === undefined ) ? 0 : parseInt ( options . wrap_line_length , 10 ) ; this . opt . e4x = ( options . e4x === undefined ) ? false : options . e4x ; if ( options . indent_with_tabs ) { this . opt . indent_char = '\t' ; this . opt . indent_size = 1 ; } this . indent_string = '' ; while ( this . opt . indent_size > 0 ) { this . indent_string += this . opt . indent_char ; this . opt . indent_size -= 1 ; } while ( js_source_text && ( js_source_text . charAt ( 0 ) === ' ' || js_source_text . charAt ( 0 ) === '\t' ) ) { this . preindent_string += js_source_text . charAt ( 0 ) ; js_source_text = js_source_text . substring ( 1 ) ; } this . input = js_source_text ; this . input_length = js_source_text . length ; this . last_type = 'TK_START_BLOCK' ; this . last_last_text = '' ; this . output_lines = [ this . create_output_line ( ) ] ; this . output_wrapped = false ; this . output_space_before_token = false ; this . whitespace_before_token = [ ] ; this . flag_store = [ ] ; this . set_mode ( this . MODE . BlockStatement ) ; this . parser_pos = 0 ; return this . beautify ( ) ; } }