diff options
Diffstat (limited to 'lua/lexers/php.lua')
| -rw-r--r-- | lua/lexers/php.lua | 185 |
1 files changed, 77 insertions, 108 deletions
diff --git a/lua/lexers/php.lua b/lua/lexers/php.lua index 5653880..f1fbda7 100644 --- a/lua/lexers/php.lua +++ b/lua/lexers/php.lua @@ -1,132 +1,101 @@ --- Copyright 2006-2017 Mitchell mitchell.att.foicica.com. See LICENSE. +-- Copyright 2006-2022 Mitchell. See LICENSE. -- PHP LPeg lexer. -local l = require('lexer') -local token, word_match = l.token, l.word_match -local P, R, S, V = lpeg.P, lpeg.R, lpeg.S, lpeg.V +local lexer = require('lexer') +local token, word_match = lexer.token, lexer.word_match +local P, S = lpeg.P, lpeg.S -local M = {_NAME = 'php'} +local lex = lexer.new('php') -- Whitespace. -local ws = token(l.WHITESPACE, l.space^1) +lex:add_rule('whitespace', token(lexer.WHITESPACE, lexer.space^1)) --- Comments. -local line_comment = (P('//') + '#') * (l.nonnewline - '?>')^0 -local block_comment = '/*' * (l.any - '*/')^0 * P('*/')^-1 -local comment = token(l.COMMENT, block_comment + line_comment) +-- Keywords. +lex:add_rule('keyword', token(lexer.KEYWORD, word_match{ + -- Reserved words (http://php.net/manual/en/reserved.keywords.php) + '__halt_compiler', 'abstract', 'and', 'array', 'as', 'break', 'callable', 'case', 'catch', + 'class', 'clone', 'const', 'continue', 'declare', 'default', 'die', 'do', 'echo', 'else', + 'elseif', 'empty', 'enddeclare', 'endfor', 'endforeach', 'endif', 'endswitch', 'endwhile', 'eval', + 'exit', 'extends', 'final', 'finally', 'fn', 'for', 'foreach', 'function', 'global', 'goto', 'if', + 'implements', 'include', 'include_once', 'instanceof', 'insteadof', 'interface', 'isset', 'list', + 'namespace', 'new', 'or', 'print', 'private', 'protected', 'public', 'require', 'require_once', + 'return', 'static', 'switch', 'throw', 'trait', 'try', 'unset', 'use', 'var', 'while', 'xor', + 'yield', 'from', + -- Reserved classes (http://php.net/manual/en/reserved.classes.php) + 'Directory', 'stdClass', '__PHP_Incomplete_Class', 'Exception', 'ErrorException', + 'php_user_filter', 'Closure', 'Generator', 'ArithmeticError', 'AssertionError', + 'DivisionByZeroError', 'Error', 'Throwable', 'ParseError', 'TypeError', 'self', 'static', 'parent' +})) + +-- Types. +lex:add_rule('type', token(lexer.TYPE, + word_match('int float bool string true false null void iterable object'))) + +-- Constants. +lex:add_rule('constant', token(lexer.CONSTANT, word_match{ + -- Compile-time (https://www.php.net/manual/en/reserved.keywords.php) + '__CLASS__', '__DIR__', '__FILE__', '__FUNCTION__', '__LINE__', '__METHOD__', '__NAMESPACE__', + '__TRAIT__', + -- Reserved (https://www.php.net/manual/en/reserved.constants.php) + 'PHP_VERSION', 'PHP_MAJOR_VERSION', 'PHP_MINOR_VERSION', 'PHP_RELEASE_VERSION', 'PHP_VERSION_ID', + 'PHP_EXTRA_VERSION', 'PHP_ZTS', 'PHP_DEBUG', 'PHP_MAXPATHLEN', 'PHP_OS', 'PHP_OS_FAMILY', + 'PHP_SAPI', 'PHP_EOL', 'PHP_INT_MAX', 'PHP_INT_MIN', 'PHP_INT_SIZE', 'PHP_FLOAT_DIG', + 'PHP_FLOAT_EPSILON', 'PHP_FLOAT_MIN', 'PHP_FLOAT_MAX', 'DEFAULT_INCLUDE_PATH', 'PEAR_INSTALL_DIR', + 'PEAR_EXTENSION_DIR', 'PHP_EXTENSION_DIR', 'PHP_PREFIX', 'PHP_BINDIR', 'PHP_BINARY', 'PHP_MANDIR', + 'PHP_LIBDIR', 'PHP_DATADIR', 'PHP_SYSCONFDIR', 'PHP_LOCALSTATEDIR', 'PHP_CONFIG_FILE_PATH', + 'PHP_CONFIG_FILE_SCAN_DIR', 'PHP_SHLIB_SUFFIX', 'PHP_FD_SETSIZE', 'E_ERROR', 'E_WARNING', + 'E_PARSE', 'E_NOTICE', 'E_CORE_ERROR', 'E_CORE_WARNING', 'E_COMPILE_ERROR', 'E_USER_ERROR', + 'E_USER_WARNING', 'E_USER_NOTICE', 'E_DEPRECATED', 'E_DEPRECATED', 'E_USER_DEPRECATED', 'E_ALL', + 'E_STRICT', '__COMPILER_HALT_OFFSET__' +})) + +-- Identifiers. +local word = (lexer.alpha + '_' + lpeg.R('\127\255')) * (lexer.alnum + '_' + lpeg.R('\127\255'))^0 +lex:add_rule('identifier', token(lexer.IDENTIFIER, word)) + +-- Variables. +lex:add_rule('variable', token(lexer.VARIABLE, '$' * word)) -- Strings. -local sq_str = l.delimited_range("'") -local dq_str = l.delimited_range('"') -local bt_str = l.delimited_range('`') +local sq_str = lexer.range("'") +local dq_str = lexer.range('"') +local bq_str = lexer.range('`') local heredoc = '<<<' * P(function(input, index) local _, e, delimiter = input:find('([%a_][%w_]*)[\n\r\f]+', index) if delimiter then - local _, e = input:find('[\n\r\f]+'..delimiter, e) + e = select(2, input:find('[\n\r\f]+' .. delimiter, e)) return e and e + 1 end end) -local string = token(l.STRING, sq_str + dq_str + bt_str + heredoc) +lex:add_rule('string', token(lexer.STRING, sq_str + dq_str + bq_str + heredoc)) -- TODO: interpolated code. --- Numbers. -local number = token(l.NUMBER, l.float + l.integer) - --- Keywords. -local keyword = token(l.KEYWORD, word_match{ - -- http://php.net/manual/en/reserved.keywords.php - '__halt_compiler', 'abstract', 'and', 'array', 'as', 'break', - 'callable', 'case', 'catch', 'class', 'clone', 'const', - 'continue', 'declare', 'default', 'die', 'do', 'echo', 'else', - 'elseif', 'empty', 'enddeclare', 'endfor', 'endforeach', - 'endif', 'endswitch', 'endwhile', 'eval', 'exit', 'extends', - 'final', 'for', 'foreach', 'function', 'global', 'goto', - 'if', 'implements', 'include', 'list', 'namespace', 'new', - 'or', 'print', 'private', 'protected', 'public', 'require', - 'require_once', 'return', 'static', 'switch', 'throw', 'trait', - 'try', 'unset', 'use', 'var', 'while', 'xor', - -- http://php.net/manual/en/reserved.classes.php - 'directory', 'stdclass', '__php_incomplete_class', 'exception', - 'errorexception', 'closure', 'generator', 'arithmeticerror', - 'assertionerror', 'divisionbyzeroerror', 'error', 'throwable', - 'parseerror', 'typeerror', 'self', 'parent', - -- http://php.net/manual/en/reserved.other-reserved-words.php - 'int', 'float', 'bool', 'string', 'true', 'false', 'null', - 'void', 'iterable', 'resource', 'object', 'mixed', 'numeric' -}) - --- Constants. -local constant = token(l.CONSTANT, word_match{ - -- Compile-time constants - -- http://php.net/manual/en/reserved.keywords.php - '__CLASS__', '__DIR__', '__FILE__', '__FUNCTION__', '__LINE__', - '__METHOD__', '__NAMESPACE__', '__TRAIT__', - -- http://php.net/manual/en/reserved.constants.php - 'PHP_VERSION', 'PHP_MAJOR_VERSION', 'PHP_MINOR_VERSION', - 'PHP_RELEASE_VERSION', 'PHP_VERSION_ID', 'PHP_EXTRA_VERSION', - 'PHP_ZTS', 'PHP_DEBUG', 'PHP_MAXPATHLEN', 'PHP_OS', - 'PHP_OS_FAMILY', 'PHP_SAPI', 'PHP_EOL', 'PHP_INT_MAX', - 'PHP_INT_MIN', 'PHP_INT_SIZE', 'PHP_FLOAT_DIG', - 'PHP_FLOAT_EPSILON', 'PHP_FLOAT_MIN', 'PHP_FLOAT_MAX', - 'DEFAULT_INCLUDE_PATH', 'PEAR_INSTALL_DIR', 'PEAR_EXTENSION_DIR', - 'PHP_EXTENSION_DIR', 'PHP_PREFIX', 'PHP_BINDIR', - 'PHP_BINARY', 'PHP_MANDIR', 'PHP_LIBDIR', 'PHP_DATADIR', - 'PHP_SYSCONFDIR', 'PHP_LOCALSTATEDIR', 'PHP_CONFIG_FILE_PATH', - 'PHP_CONFIG_FILE_SCAN_DIR', 'PHP_SHLIB_SUFFIX', 'PHP_FD_SETSIZE', - 'E_ERROR', 'E_WARNING', 'E_PARSE', 'E_NOTICE', 'E_CORE_ERROR', - 'E_CORE_WARNING', 'E_COMPILE_ERROR', 'E_USER_ERROR', - 'E_USER_WARNING', 'E_USER_NOTICE', 'E_DEPRECATED', - 'E_DEPRECATED', 'E_USER_DEPRECATED', 'E_ALL', 'E_STRICT', - '__COMPILER_HALT_OFFSET__', -}) - --- Variables. -local word = (l.alpha + '_' + R('\127\255')) * (l.alnum + '_' + R('\127\255'))^0 -local variable = token(l.VARIABLE, '$' * word) +-- Comments. +local line_comment = lexer.to_eol(P('//') + '#') +local block_comment = lexer.range('/*', '*/') +lex:add_rule('comment', token(lexer.COMMENT, block_comment + line_comment)) --- Identifiers. -local identifier = token(l.IDENTIFIER, word) +-- Numbers. +lex:add_rule('number', token(lexer.NUMBER, lexer.number)) -- Operators. -local operator = token(l.OPERATOR, S('!@%^*&()-+=|/.,;:<>[]{}') + '?' * -P('>')) - -M._rules = { - {'whitespace', ws}, - {'keyword', keyword}, - {'constant', constant}, - {'identifier', identifier}, - {'string', string}, - {'variable', variable}, - {'comment', comment}, - {'number', number}, - {'operator', operator}, -} +lex:add_rule('operator', token(lexer.OPERATOR, S('!@%^*&()-+=|/?.,;:<>[]{}'))) -- Embedded in HTML. -local html = l.load('html') +local html = lexer.load('html') -- Embedded PHP. -local php_start_rule = token('php_tag', '<?' * ('php' * l.space)^-1) +local php_start_rule = token('php_tag', '<?' * ('php' * lexer.space)^-1) local php_end_rule = token('php_tag', '?>') -l.embed_lexer(html, M, php_start_rule, php_end_rule) - -M._tokenstyles = { - php_tag = l.STYLE_EMBEDDED -} - -local _foldsymbols = html._foldsymbols -_foldsymbols._patterns[#_foldsymbols._patterns + 1] = '<%?' -_foldsymbols._patterns[#_foldsymbols._patterns + 1] = '%?>' -_foldsymbols._patterns[#_foldsymbols._patterns + 1] = '/%*' -_foldsymbols._patterns[#_foldsymbols._patterns + 1] = '%*/' -_foldsymbols._patterns[#_foldsymbols._patterns + 1] = '//' -_foldsymbols._patterns[#_foldsymbols._patterns + 1] = '#' -_foldsymbols._patterns[#_foldsymbols._patterns + 1] = '[{}()]' -_foldsymbols.php_tag = {['<?'] = 1, ['?>'] = -1} -_foldsymbols[l.COMMENT]['/*'], _foldsymbols[l.COMMENT]['*/'] = 1, -1 -_foldsymbols[l.COMMENT]['//'] = l.fold_line_comments('//') -_foldsymbols[l.COMMENT]['#'] = l.fold_line_comments('#') -_foldsymbols[l.OPERATOR] = {['{'] = 1, ['}'] = -1, ['('] = 1, [')'] = -1} -M._foldsymbols = _foldsymbols - -return M +html:embed(lex, php_start_rule, php_end_rule) +lex:add_style('php_tag', lexer.styles.embedded) + +-- Fold points. +lex:add_fold_point('php_tag', '<?', '?>') +lex:add_fold_point(lexer.COMMENT, '/*', '*/') +lex:add_fold_point(lexer.COMMENT, lexer.fold_consecutive_lines('//')) +lex:add_fold_point(lexer.COMMENT, lexer.fold_consecutive_lines('#')) +lex:add_fold_point(lexer.OPERATOR, '{', '}') +lex:add_fold_point(lexer.OPERATOR, '(', ')') + +return lex |