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# -*- coding: utf-8 -*-
"""
pygments.lexers.sas
~~~~~~~~~~~~~~~~~~~
Lexer for SAS.
"""
import re
from pygments.lexer import RegexLexer, include, words
from pygments.token import Comment, Keyword, Name, Number, String, Text, \
Other, Generic
__all__ = ['SASLexer']
class SASLexer(RegexLexer):
"""
For `SAS <http://www.sas.com/>` files.
Syntax from syntax/sas.vim by James Kidd <james.kidd@covance.com>
"""
name = 'SAS'
aliases = ['SAS', 'sas']
filenames = ['*.SAS', '*.sas']
mimetypes = ['text/x-sas', 'text/sas', 'application/x-sas']
flags = re.IGNORECASE | re.MULTILINE
builtins_macros = (
"bquote", "nrbquote", "cmpres", "qcmpres", "compstor", "datatyp",
"display", "do", "else", "end", "eval", "global", "goto", "if",
"index", "input", "keydef", "label", "left", "length", "let",
"local", "lowcase", "macro", "mend", "nrbquote", "nrquote",
"nrstr", "put", "qcmpres", "qleft", "qlowcase", "qscan",
"qsubstr", "qsysfunc", "qtrim", "quote", "qupcase", "scan",
"str", "substr", "superq", "syscall", "sysevalf", "sysexec",
"sysfunc", "sysget", "syslput", "sysprod", "sysrc", "sysrput",
"then", "to", "trim", "unquote", "until", "upcase", "verify",
"while", "window"
)
builtins_conditionals = (
"do", "if", "then", "else", "end", "until", "while"
)
builtins_statements = (
"abort", "array", "attrib", "by", "call", "cards", "cards4",
"catname", "continue", "datalines", "datalines4", "delete", "delim",
"delimiter", "display", "dm", "drop", "endsas", "error", "file",
"filename", "footnote", "format", "goto", "in", "infile", "informat",
"input", "keep", "label", "leave", "length", "libname", "link",
"list", "lostcard", "merge", "missing", "modify", "options", "output",
"out", "page", "put", "redirect", "remove", "rename", "replace",
"retain", "return", "select", "set", "skip", "startsas", "stop",
"title", "update", "waitsas", "where", "window", "x", "systask"
)
builtins_sql = (
"add", "and", "alter", "as", "cascade", "check", "create",
"delete", "describe", "distinct", "drop", "foreign", "from",
"group", "having", "index", "insert", "into", "in", "key", "like",
"message", "modify", "msgtype", "not", "null", "on", "or",
"order", "primary", "references", "reset", "restrict", "select",
"set", "table", "unique", "update", "validate", "view", "where"
)
builtins_functions = (
"abs", "addr", "airy", "arcos", "arsin", "atan", "attrc",
"attrn", "band", "betainv", "blshift", "bnot", "bor",
"brshift", "bxor", "byte", "cdf", "ceil", "cexist", "cinv",
"close", "cnonct", "collate", "compbl", "compound",
"compress", "cos", "cosh", "css", "curobs", "cv", "daccdb",
"daccdbsl", "daccsl", "daccsyd", "dacctab", "dairy", "date",
"datejul", "datepart", "datetime", "day", "dclose", "depdb",
"depdbsl", "depdbsl", "depsl", "depsl", "depsyd", "depsyd",
"deptab", "deptab", "dequote", "dhms", "dif", "digamma",
"dim", "dinfo", "dnum", "dopen", "doptname", "doptnum",
"dread", "dropnote", "dsname", "erf", "erfc", "exist", "exp",
"fappend", "fclose", "fcol", "fdelete", "fetch", "fetchobs",
"fexist", "fget", "fileexist", "filename", "fileref",
"finfo", "finv", "fipname", "fipnamel", "fipstate", "floor",
"fnonct", "fnote", "fopen", "foptname", "foptnum", "fpoint",
"fpos", "fput", "fread", "frewind", "frlen", "fsep", "fuzz",
"fwrite", "gaminv", "gamma", "getoption", "getvarc", "getvarn",
"hbound", "hms", "hosthelp", "hour", "ibessel", "index",
"indexc", "indexw", "input", "inputc", "inputn", "int",
"intck", "intnx", "intrr", "irr", "jbessel", "juldate",
"kurtosis", "lag", "lbound", "left", "length", "lgamma",
"libname", "libref", "log", "log10", "log2", "logpdf", "logpmf",
"logsdf", "lowcase", "max", "mdy", "mean", "min", "minute",
"mod", "month", "mopen", "mort", "n", "netpv", "nmiss",
"normal", "note", "npv", "open", "ordinal", "pathname",
"pdf", "peek", "peekc", "pmf", "point", "poisson", "poke",
"probbeta", "probbnml", "probchi", "probf", "probgam",
"probhypr", "probit", "probnegb", "probnorm", "probt",
"put", "putc", "putn", "qtr", "quote", "ranbin", "rancau",
"ranexp", "rangam", "range", "rank", "rannor", "ranpoi",
"rantbl", "rantri", "ranuni", "repeat", "resolve", "reverse",
"rewind", "right", "round", "saving", "scan", "sdf", "second",
"sign", "sin", "sinh", "skewness", "soundex", "spedis",
"sqrt", "std", "stderr", "stfips", "stname", "stnamel",
"substr", "sum", "symget", "sysget", "sysmsg", "sysprod",
"sysrc", "system", "tan", "tanh", "time", "timepart", "tinv",
"tnonct", "today", "translate", "tranwrd", "trigamma",
"trim", "trimn", "trunc", "uniform", "upcase", "uss", "var",
"varfmt", "varinfmt", "varlabel", "varlen", "varname",
"varnum", "varray", "varrayx", "vartype", "verify", "vformat",
"vformatd", "vformatdx", "vformatn", "vformatnx", "vformatw",
"vformatwx", "vformatx", "vinarray", "vinarrayx", "vinformat",
"vinformatd", "vinformatdx", "vinformatn", "vinformatnx",
"vinformatw", "vinformatwx", "vinformatx", "vlabel",
"vlabelx", "vlength", "vlengthx", "vname", "vnamex", "vtype",
"vtypex", "weekday", "year", "yyq", "zipfips", "zipname",
"zipnamel", "zipstate"
)
tokens = {
'root': [
include('comments'),
include('proc-data'),
include('cards-datalines'),
include('logs'),
include('general'),
(r'.', Text),
],
# SAS is multi-line regardless, but * is ended by ;
'comments': [
(r'^\s*\*.*?;', Comment),
(r'/\*.*?\*/', Comment),
(r'^\s*\*(.|\n)*?;', Comment.Multiline),
(r'/[*](.|\n)*?[*]/', Comment.Multiline),
],
# Special highlight for proc, data, quit, run
'proc-data': [
(r'(^|;)\s*(proc [a-zA-Z0-9_]+|data|run|quit)[\s;\n]',
Keyword.Reserved),
],
# Special highlight cards and datalines
'cards-datalines': [
(r'^\s*(datalines|cards)\s*;\s*$', Keyword, 'data'),
],
'data': [
(r'(.|\n)*^\s*;\s*$', Other, '#pop'),
],
# Special highlight for put NOTE|ERROR|WARNING (order matters)
'logs': [
(r'\n?^\s*%?put ', Keyword, 'log-messages'),
],
'log-messages': [
(r'NOTE(:|-).*', Generic, '#pop'),
(r'WARNING(:|-).*', Generic.Emph, '#pop'),
(r'ERROR(:|-).*', Generic.Error, '#pop'),
(r'(?!(WARNING|NOTE|ERROR))+', Text, '#pop'),
include('general'),
],
'general': [
include('keywords'),
include('vars-strings'),
include('special'),
include('numbers'),
],
# Keywords, statements, functions, macros
'keywords': [
(words(builtins_statements,
prefix = r'\b',
suffix = r'\b'),
Keyword),
(words(builtins_sql,
prefix = r'\b',
suffix = r'\b'),
Keyword),
(words(builtins_conditionals,
prefix = r'\b',
suffix = r'\b'),
Keyword),
(words(builtins_macros,
prefix = r'%',
suffix = r'\b'),
Name.Builtin),
(words(builtins_functions,
prefix = r'\b',
suffix = r'\('),
Name.Builtin),
],
# Strings and user-defined variables and macros (order matters)
'vars-strings': [
(r'&[a-zA-Z_][a-zA-Z0-9_]{0,31}\.?', Name.Variable),
(r'%[a-zA-Z_][a-zA-Z0-9_]{0,31}', Name.Function),
(r'\'', String, 'string_squote'),
(r'"', String, 'string_dquote'),
],
'string_squote': [
('\'', String, '#pop'),
(r'\\\\|\\"|\\\n', String.Escape),
# AFAIK, macro variables are not evaluated in single quotes
# (r'&', Name.Variable, 'validvar'),
# (r'&', String.Interpol, 'validvar'),
(r'[^$\'\\]+', String),
(r'[$\'\\]', String),
],
'string_dquote': [
(r'"', String, '#pop'),
(r'\\\\|\\"|\\\n', String.Escape),
(r'&', Name.Variable, 'validvar'),
(r'&', String.Interpol, 'validvar'),
(r'[^$&"\\]+', String),
(r'[$"\\]', String),
],
'validvar': [
(r'[a-zA-Z_][a-zA-Z0-9_]{0,31}\.?', Name.Variable, '#pop'),
],
# SAS numbers and special variables
'numbers': [
(r'\b[+-]?([0-9]+(\.[0-9]+)?|\.[0-9]+|\.)([eE][+-]?[0-9]+)?[i]?\b',
Number),
],
'special': [
(r'(null|missing|_all_|_automatic_|_character_|_n_|'
r'_infile_|_name_|_null_|_numeric_|_user_|_webout_)',
Keyword.Constant),
],
# 'operators': [
# (r'(-|=|<=|>=|<|>|<>|&|!=|'
# r'\||\*|\+|\^|/|!|~|~=)', Operator)
# ],
}
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