# -*- coding: utf-8 -*-
"""
    pygments.lexers.sql
    ~~~~~~~~~~~~~~~~~~~

    Lexers for various SQL dialects and related interactive sessions.

    Postgres specific lexers:

    `PostgresLexer`
        A SQL lexer for the PostgreSQL dialect. Differences w.r.t. the SQL
        lexer are:

        - keywords and data types list parsed from the PG docs (run the
          `_postgres_builtins` module to update them);
        - Content of $-strings parsed using a specific lexer, e.g. the content
          of a PL/Python function is parsed using the Python lexer;
        - parse PG specific constructs: E-strings, $-strings, U&-strings,
          different operators and punctuation.

    `PlPgsqlLexer`
        A lexer for the PL/pgSQL language. Adds a few specific construct on
        top of the PG SQL lexer (such as <<label>>).

    `PostgresConsoleLexer`
        A lexer to highlight an interactive psql session:

        - identifies the prompt and does its best to detect the end of command
          in multiline statement where not all the lines are prefixed by a
          prompt, telling them apart from the output;
        - highlights errors in the output and notification levels;
        - handles psql backslash commands.

    The ``tests/examplefiles`` contains a few test files with data to be
    parsed by these lexers.

    :copyright: Copyright 2006-2014 by the Pygments team, see AUTHORS.
    :license: BSD, see LICENSE for details.
"""

import re

from pygments.lexer import Lexer, RegexLexer, do_insertions, bygroups
from pygments.token import Punctuation, \
    Text, Comment, Operator, Keyword, Name, String, Number, Generic
from pygments.lexers import get_lexer_by_name, ClassNotFound
from pygments.util import iteritems

from pygments.lexers._postgres_builtins import KEYWORDS, DATATYPES, \
     PSEUDO_TYPES, PLPGSQL_KEYWORDS


__all__ = ['PostgresLexer', 'PlPgsqlLexer', 'PostgresConsoleLexer',
           'SqlLexer', 'MySqlLexer', 'SqliteConsoleLexer', 'RqlLexer']

line_re  = re.compile('.*?\n')

language_re = re.compile(r"\s+LANGUAGE\s+'?(\w+)'?", re.IGNORECASE)

def language_callback(lexer, match):
    """Parse the content of a $-string using a lexer

    The lexer is chosen looking for a nearby LANGUAGE.
    """
    l = None
    m = language_re.match(lexer.text[match.end():match.end()+100])
    if m is not None:
        l = lexer._get_lexer(m.group(1))
    else:
        m = list(language_re.finditer(
            lexer.text[max(0, match.start()-100):match.start()]))
        if m:
            l = lexer._get_lexer(m[-1].group(1))

    if l:
        yield (match.start(1), String, match.group(1))
        for x in l.get_tokens_unprocessed(match.group(2)):
            yield x
        yield (match.start(3), String, match.group(3))

    else:
        yield (match.start(), String, match.group())


class PostgresBase(object):
    """Base class for Postgres-related lexers.

    This is implemented as a mixin to avoid the Lexer metaclass kicking in.
    this way the different lexer don't have a common Lexer ancestor. If they
    had, _tokens could be created on this ancestor and not updated for the
    other classes, resulting e.g. in PL/pgSQL parsed as SQL. This shortcoming
    seem to suggest that regexp lexers are not really subclassable.
    """
    def get_tokens_unprocessed(self, text, *args):
        # Have a copy of the entire text to be used by `language_callback`.
        self.text = text
        for x in super(PostgresBase, self).get_tokens_unprocessed(
                text, *args):
            yield x

    def _get_lexer(self, lang):
        if lang.lower() == 'sql':
            return get_lexer_by_name('postgresql', **self.options)

        tries = [ lang ]
        if lang.startswith('pl'):
            tries.append(lang[2:])
        if lang.endswith('u'):
            tries.append(lang[:-1])
        if lang.startswith('pl') and lang.endswith('u'):
            tries.append(lang[2:-1])

        for l in tries:
            try:
                return get_lexer_by_name(l, **self.options)
            except ClassNotFound:
                pass
        else:
            # TODO: better logging
            # print >>sys.stderr, "language not found:", lang
            return None


class PostgresLexer(PostgresBase, RegexLexer):
    """
    Lexer for the PostgreSQL dialect of SQL.

    .. versionadded:: 1.5
    """

    name = 'PostgreSQL SQL dialect'
    aliases = ['postgresql', 'postgres']
    mimetypes = ['text/x-postgresql']

    flags = re.IGNORECASE
    tokens = {
        'root': [
            (r'\s+', Text),
            (r'--.*?\n', Comment.Single),
            (r'/\*', Comment.Multiline, 'multiline-comments'),
            (r'(' + '|'.join([s.replace(" ", "\s+")
                for s in DATATYPES + PSEUDO_TYPES])
                  + r')\b', Name.Builtin),
            (r'(' + '|'.join(KEYWORDS) + r')\b', Keyword),
            (r'[+*/<>=~!@#%^&|`?-]+', Operator),
            (r'::', Operator),  # cast
            (r'\$\d+', Name.Variable),
            (r'([0-9]*\.[0-9]*|[0-9]+)(e[+-]?[0-9]+)?', Number.Float),
            (r'[0-9]+', Number.Integer),
            (r"(E|U&)?'(''|[^'])*'", String.Single),
            (r'(U&)?"(""|[^"])*"', String.Name), # quoted identifier
            (r'(?s)(\$[^\$]*\$)(.*?)(\1)', language_callback),
            (r'[a-z_]\w*', Name),

            # psql variable in SQL
            (r""":(['"]?)[a-z]\w*\b\1""", Name.Variable),

            (r'[;:()\[\]\{\},\.]', Punctuation),
        ],
        'multiline-comments': [
            (r'/\*', Comment.Multiline, 'multiline-comments'),
            (r'\*/', Comment.Multiline, '#pop'),
            (r'[^/\*]+', Comment.Multiline),
            (r'[/*]', Comment.Multiline)
        ],
    }


class PlPgsqlLexer(PostgresBase, RegexLexer):
    """
    Handle the extra syntax in Pl/pgSQL language.

    .. versionadded:: 1.5
    """
    name = 'PL/pgSQL'
    aliases = ['plpgsql']
    mimetypes = ['text/x-plpgsql']

    flags = re.IGNORECASE
    tokens = dict((k, l[:]) for (k, l) in iteritems(PostgresLexer.tokens))

    # extend the keywords list
    for i, pattern in enumerate(tokens['root']):
        if pattern[1] == Keyword:
            tokens['root'][i] = (
                r'(' + '|'.join(KEYWORDS + PLPGSQL_KEYWORDS) + r')\b',
                Keyword)
            del i
            break
    else:
        assert 0, "SQL keywords not found"

    # Add specific PL/pgSQL rules (before the SQL ones)
    tokens['root'][:0] = [
        (r'\%[a-z]\w*\b', Name.Builtin),     # actually, a datatype
        (r':=', Operator),
        (r'\<\<[a-z]\w*\>\>', Name.Label),
        (r'\#[a-z]\w*\b', Keyword.Pseudo),   # #variable_conflict
    ]


class PsqlRegexLexer(PostgresBase, RegexLexer):
    """
    Extend the PostgresLexer adding support specific for psql commands.

    This is not a complete psql lexer yet as it lacks prompt support
    and output rendering.
    """

    name = 'PostgreSQL console - regexp based lexer'
    aliases = []    # not public

    flags = re.IGNORECASE
    tokens = dict((k, l[:]) for (k, l) in iteritems(PostgresLexer.tokens))

    tokens['root'].append(
        (r'\\[^\s]+', Keyword.Pseudo, 'psql-command'))
    tokens['psql-command'] = [
        (r'\n', Text, 'root'),
        (r'\s+', Text),
        (r'\\[^\s]+', Keyword.Pseudo),
        (r""":(['"]?)[a-z]\w*\b\1""", Name.Variable),
        (r"'(''|[^'])*'", String.Single),
        (r"`([^`])*`", String.Backtick),
        (r"[^\s]+", String.Symbol),
    ]

re_prompt = re.compile(r'^(\S.*?)??[=\-\(\$\'\"][#>]')
re_psql_command = re.compile(r'\s*\\')
re_end_command = re.compile(r';\s*(--.*?)?$')
re_psql_command = re.compile(r'(\s*)(\\.+?)(\s+)$')
re_error = re.compile(r'(ERROR|FATAL):')
re_message = re.compile(
    r'((?:DEBUG|INFO|NOTICE|WARNING|ERROR|'
    r'FATAL|HINT|DETAIL|CONTEXT|LINE [0-9]+):)(.*?\n)')


class lookahead(object):
    """Wrap an iterator and allow pushing back an item."""
    def __init__(self, x):
        self.iter = iter(x)
        self._nextitem = None
    def __iter__(self):
        return self
    def send(self, i):
        self._nextitem = i
        return i
    def __next__(self):
        if self._nextitem is not None:
            ni = self._nextitem
            self._nextitem = None
            return ni
        return next(self.iter)
    next = __next__


class PostgresConsoleLexer(Lexer):
    """
    Lexer for psql sessions.

    .. versionadded:: 1.5
    """

    name = 'PostgreSQL console (psql)'
    aliases = ['psql', 'postgresql-console', 'postgres-console']
    mimetypes = ['text/x-postgresql-psql']

    def get_tokens_unprocessed(self, data):
        sql = PsqlRegexLexer(**self.options)

        lines = lookahead(line_re.findall(data))

        # prompt-output cycle
        while 1:

            # consume the lines of the command: start with an optional prompt
            # and continue until the end of command is detected
            curcode = ''
            insertions = []
            while 1:
                try:
                    line = next(lines)
                except StopIteration:
                    # allow the emission of partially collected items
                    # the repl loop will be broken below
                    break

                # Identify a shell prompt in case of psql commandline example
                if line.startswith('$') and not curcode:
                    lexer = get_lexer_by_name('console', **self.options)
                    for x in lexer.get_tokens_unprocessed(line):
                        yield x
                    break

                # Identify a psql prompt
                mprompt = re_prompt.match(line)
                if mprompt is not None:
                    insertions.append((len(curcode),
                                       [(0, Generic.Prompt, mprompt.group())]))
                    curcode += line[len(mprompt.group()):]
                else:
                    curcode += line

                # Check if this is the end of the command
                # TODO: better handle multiline comments at the end with
                # a lexer with an external state?
                if re_psql_command.match(curcode) \
                or re_end_command.search(curcode):
                    break

            # Emit the combined stream of command and prompt(s)
            for item in do_insertions(insertions,
                    sql.get_tokens_unprocessed(curcode)):
                yield item

            # Emit the output lines
            out_token = Generic.Output
            while 1:
                line = next(lines)
                mprompt = re_prompt.match(line)
                if mprompt is not None:
                    # push the line back to have it processed by the prompt
                    lines.send(line)
                    break

                mmsg = re_message.match(line)
                if mmsg is not None:
                    if mmsg.group(1).startswith("ERROR") \
                    or mmsg.group(1).startswith("FATAL"):
                        out_token = Generic.Error
                    yield (mmsg.start(1), Generic.Strong, mmsg.group(1))
                    yield (mmsg.start(2), out_token, mmsg.group(2))
                else:
                    yield (0, out_token, line)


class SqlLexer(RegexLexer):
    """
    Lexer for Structured Query Language. Currently, this lexer does
    not recognize any special syntax except ANSI SQL.
    """

    name = 'SQL'
    aliases = ['sql']
    filenames = ['*.sql']
    mimetypes = ['text/x-sql']

    flags = re.IGNORECASE
    tokens = {
        'root': [
            (r'\s+', Text),
            (r'--.*?\n', Comment.Single),
            (r'/\*', Comment.Multiline, 'multiline-comments'),
            (r'(ABORT|ABS|ABSOLUTE|ACCESS|ADA|ADD|ADMIN|AFTER|AGGREGATE|'
             r'ALIAS|ALL|ALLOCATE|ALTER|ANALYSE|ANALYZE|AND|ANY|ARE|AS|'
             r'ASC|ASENSITIVE|ASSERTION|ASSIGNMENT|ASYMMETRIC|AT|ATOMIC|'
             r'AUTHORIZATION|AVG|BACKWARD|BEFORE|BEGIN|BETWEEN|BITVAR|'
             r'BIT_LENGTH|BOTH|BREADTH|BY|C|CACHE|CALL|CALLED|CARDINALITY|'
             r'CASCADE|CASCADED|CASE|CAST|CATALOG|CATALOG_NAME|CHAIN|'
             r'CHARACTERISTICS|CHARACTER_LENGTH|CHARACTER_SET_CATALOG|'
             r'CHARACTER_SET_NAME|CHARACTER_SET_SCHEMA|CHAR_LENGTH|CHECK|'
             r'CHECKED|CHECKPOINT|CLASS|CLASS_ORIGIN|CLOB|CLOSE|CLUSTER|'
             r'COALSECE|COBOL|COLLATE|COLLATION|COLLATION_CATALOG|'
             r'COLLATION_NAME|COLLATION_SCHEMA|COLUMN|COLUMN_NAME|'
             r'COMMAND_FUNCTION|COMMAND_FUNCTION_CODE|COMMENT|COMMIT|'
             r'COMMITTED|COMPLETION|CONDITION_NUMBER|CONNECT|CONNECTION|'
             r'CONNECTION_NAME|CONSTRAINT|CONSTRAINTS|CONSTRAINT_CATALOG|'
             r'CONSTRAINT_NAME|CONSTRAINT_SCHEMA|CONSTRUCTOR|CONTAINS|'
             r'CONTINUE|CONVERSION|CONVERT|COPY|CORRESPONTING|COUNT|'
             r'CREATE|CREATEDB|CREATEUSER|CROSS|CUBE|CURRENT|CURRENT_DATE|'
             r'CURRENT_PATH|CURRENT_ROLE|CURRENT_TIME|CURRENT_TIMESTAMP|'
             r'CURRENT_USER|CURSOR|CURSOR_NAME|CYCLE|DATA|DATABASE|'
             r'DATETIME_INTERVAL_CODE|DATETIME_INTERVAL_PRECISION|DAY|'
             r'DEALLOCATE|DECLARE|DEFAULT|DEFAULTS|DEFERRABLE|DEFERRED|'
             r'DEFINED|DEFINER|DELETE|DELIMITER|DELIMITERS|DEREF|DESC|'
             r'DESCRIBE|DESCRIPTOR|DESTROY|DESTRUCTOR|DETERMINISTIC|'
             r'DIAGNOSTICS|DICTIONARY|DISCONNECT|DISPATCH|DISTINCT|DO|'
             r'DOMAIN|DROP|DYNAMIC|DYNAMIC_FUNCTION|DYNAMIC_FUNCTION_CODE|'
             r'EACH|ELSE|ENCODING|ENCRYPTED|END|END-EXEC|EQUALS|ESCAPE|EVERY|'
             r'EXCEPTION|EXCEPT|EXCLUDING|EXCLUSIVE|EXEC|EXECUTE|EXISTING|'
             r'EXISTS|EXPLAIN|EXTERNAL|EXTRACT|FALSE|FETCH|FINAL|FIRST|FOR|'
             r'FORCE|FOREIGN|FORTRAN|FORWARD|FOUND|FREE|FREEZE|FROM|FULL|'
             r'FUNCTION|G|GENERAL|GENERATED|GET|GLOBAL|GO|GOTO|GRANT|GRANTED|'
             r'GROUP|GROUPING|HANDLER|HAVING|HIERARCHY|HOLD|HOST|IDENTITY|'
             r'IGNORE|ILIKE|IMMEDIATE|IMMUTABLE|IMPLEMENTATION|IMPLICIT|IN|'
             r'INCLUDING|INCREMENT|INDEX|INDITCATOR|INFIX|INHERITS|INITIALIZE|'
             r'INITIALLY|INNER|INOUT|INPUT|INSENSITIVE|INSERT|INSTANTIABLE|'
             r'INSTEAD|INTERSECT|INTO|INVOKER|IS|ISNULL|ISOLATION|ITERATE|JOIN|'
             r'KEY|KEY_MEMBER|KEY_TYPE|LANCOMPILER|LANGUAGE|LARGE|LAST|'
             r'LATERAL|LEADING|LEFT|LENGTH|LESS|LEVEL|LIKE|LIMIT|LISTEN|LOAD|'
             r'LOCAL|LOCALTIME|LOCALTIMESTAMP|LOCATION|LOCATOR|LOCK|LOWER|'
             r'MAP|MATCH|MAX|MAXVALUE|MESSAGE_LENGTH|MESSAGE_OCTET_LENGTH|'
             r'MESSAGE_TEXT|METHOD|MIN|MINUTE|MINVALUE|MOD|MODE|MODIFIES|'
             r'MODIFY|MONTH|MORE|MOVE|MUMPS|NAMES|NATIONAL|NATURAL|NCHAR|'
             r'NCLOB|NEW|NEXT|NO|NOCREATEDB|NOCREATEUSER|NONE|NOT|NOTHING|'
             r'NOTIFY|NOTNULL|NULL|NULLABLE|NULLIF|OBJECT|OCTET_LENGTH|OF|OFF|'
             r'OFFSET|OIDS|OLD|ON|ONLY|OPEN|OPERATION|OPERATOR|OPTION|OPTIONS|'
             r'OR|ORDER|ORDINALITY|OUT|OUTER|OUTPUT|OVERLAPS|OVERLAY|OVERRIDING|'
             r'OWNER|PAD|PARAMETER|PARAMETERS|PARAMETER_MODE|PARAMATER_NAME|'
             r'PARAMATER_ORDINAL_POSITION|PARAMETER_SPECIFIC_CATALOG|'
             r'PARAMETER_SPECIFIC_NAME|PARAMATER_SPECIFIC_SCHEMA|PARTIAL|'
             r'PASCAL|PENDANT|PLACING|PLI|POSITION|POSTFIX|PRECISION|PREFIX|'
             r'PREORDER|PREPARE|PRESERVE|PRIMARY|PRIOR|PRIVILEGES|PROCEDURAL|'
             r'PROCEDURE|PUBLIC|READ|READS|RECHECK|RECURSIVE|REF|REFERENCES|'
             r'REFERENCING|REINDEX|RELATIVE|RENAME|REPEATABLE|REPLACE|RESET|'
             r'RESTART|RESTRICT|RESULT|RETURN|RETURNED_LENGTH|'
             r'RETURNED_OCTET_LENGTH|RETURNED_SQLSTATE|RETURNS|REVOKE|RIGHT|'
             r'ROLE|ROLLBACK|ROLLUP|ROUTINE|ROUTINE_CATALOG|ROUTINE_NAME|'
             r'ROUTINE_SCHEMA|ROW|ROWS|ROW_COUNT|RULE|SAVE_POINT|SCALE|SCHEMA|'
             r'SCHEMA_NAME|SCOPE|SCROLL|SEARCH|SECOND|SECURITY|SELECT|SELF|'
             r'SENSITIVE|SERIALIZABLE|SERVER_NAME|SESSION|SESSION_USER|SET|'
             r'SETOF|SETS|SHARE|SHOW|SIMILAR|SIMPLE|SIZE|SOME|SOURCE|SPACE|'
             r'SPECIFIC|SPECIFICTYPE|SPECIFIC_NAME|SQL|SQLCODE|SQLERROR|'
             r'SQLEXCEPTION|SQLSTATE|SQLWARNINIG|STABLE|START|STATE|STATEMENT|'
             r'STATIC|STATISTICS|STDIN|STDOUT|STORAGE|STRICT|STRUCTURE|STYPE|'
             r'SUBCLASS_ORIGIN|SUBLIST|SUBSTRING|SUM|SYMMETRIC|SYSID|SYSTEM|'
             r'SYSTEM_USER|TABLE|TABLE_NAME| TEMP|TEMPLATE|TEMPORARY|TERMINATE|'
             r'THAN|THEN|TIMESTAMP|TIMEZONE_HOUR|TIMEZONE_MINUTE|TO|TOAST|'
             r'TRAILING|TRANSATION|TRANSACTIONS_COMMITTED|'
             r'TRANSACTIONS_ROLLED_BACK|TRANSATION_ACTIVE|TRANSFORM|'
             r'TRANSFORMS|TRANSLATE|TRANSLATION|TREAT|TRIGGER|TRIGGER_CATALOG|'
             r'TRIGGER_NAME|TRIGGER_SCHEMA|TRIM|TRUE|TRUNCATE|TRUSTED|TYPE|'
             r'UNCOMMITTED|UNDER|UNENCRYPTED|UNION|UNIQUE|UNKNOWN|UNLISTEN|'
             r'UNNAMED|UNNEST|UNTIL|UPDATE|UPPER|USAGE|USER|'
             r'USER_DEFINED_TYPE_CATALOG|USER_DEFINED_TYPE_NAME|'
             r'USER_DEFINED_TYPE_SCHEMA|USING|VACUUM|VALID|VALIDATOR|VALUES|'
             r'VARIABLE|VERBOSE|VERSION|VIEW|VOLATILE|WHEN|WHENEVER|WHERE|'
             r'WITH|WITHOUT|WORK|WRITE|YEAR|ZONE)\b', Keyword),
            (r'(ARRAY|BIGINT|BINARY|BIT|BLOB|BOOLEAN|CHAR|CHARACTER|DATE|'
             r'DEC|DECIMAL|FLOAT|INT|INTEGER|INTERVAL|NUMBER|NUMERIC|REAL|'
             r'SERIAL|SMALLINT|VARCHAR|VARYING|INT8|SERIAL8|TEXT)\b',
             Name.Builtin),
            (r'[+*/<>=~!@#%^&|`?-]', Operator),
            (r'[0-9]+', Number.Integer),
            # TODO: Backslash escapes?
            (r"'(''|[^'])*'", String.Single),
            (r'"(""|[^"])*"', String.Symbol), # not a real string literal in ANSI SQL
            (r'[a-z_]\w*', Name),
            (r'[;:()\[\],\.]', Punctuation)
        ],
        'multiline-comments': [
            (r'/\*', Comment.Multiline, 'multiline-comments'),
            (r'\*/', Comment.Multiline, '#pop'),
            (r'[^/\*]+', Comment.Multiline),
            (r'[/*]', Comment.Multiline)
        ]
    }


class MySqlLexer(RegexLexer):
    """
    Special lexer for MySQL.
    """

    name = 'MySQL'
    aliases = ['mysql']
    mimetypes = ['text/x-mysql']

    flags = re.IGNORECASE
    tokens = {
        'root': [
            (r'\s+', Text),
            (r'(#|--\s+).*?\n', Comment.Single),
            (r'/\*', Comment.Multiline, 'multiline-comments'),
            (r'[0-9]+', Number.Integer),
            (r'[0-9]*\.[0-9]+(e[+-][0-9]+)', Number.Float),
            # TODO: add backslash escapes
            (r"'(''|[^'])*'", String.Single),
            (r'"(""|[^"])*"', String.Double),
            (r"`(``|[^`])*`", String.Symbol),
            (r'[+*/<>=~!@#%^&|`?-]', Operator),
            (r'\b(tinyint|smallint|mediumint|int|integer|bigint|date|'
             r'datetime|time|bit|bool|tinytext|mediumtext|longtext|text|'
             r'tinyblob|mediumblob|longblob|blob|float|double|double\s+'
             r'precision|real|numeric|dec|decimal|timestamp|year|char|'
             r'varchar|varbinary|varcharacter|enum|set)(\b\s*)(\()?',
             bygroups(Keyword.Type, Text, Punctuation)),
            (r'\b(add|all|alter|analyze|and|as|asc|asensitive|before|between|'
             r'bigint|binary|blob|both|by|call|cascade|case|change|char|'
             r'character|check|collate|column|condition|constraint|continue|'
             r'convert|create|cross|current_date|current_time|'
             r'current_timestamp|current_user|cursor|database|databases|'
             r'day_hour|day_microsecond|day_minute|day_second|dec|decimal|'
             r'declare|default|delayed|delete|desc|describe|deterministic|'
             r'distinct|distinctrow|div|double|drop|dual|each|else|elseif|'
             r'enclosed|escaped|exists|exit|explain|fetch|float|float4|float8'
             r'|for|force|foreign|from|fulltext|grant|group|having|'
             r'high_priority|hour_microsecond|hour_minute|hour_second|if|'
             r'ignore|in|index|infile|inner|inout|insensitive|insert|int|'
             r'int1|int2|int3|int4|int8|integer|interval|into|is|iterate|'
             r'join|key|keys|kill|leading|leave|left|like|limit|lines|load|'
             r'localtime|localtimestamp|lock|long|loop|low_priority|match|'
             r'minute_microsecond|minute_second|mod|modifies|natural|'
             r'no_write_to_binlog|not|numeric|on|optimize|option|optionally|'
             r'or|order|out|outer|outfile|precision|primary|procedure|purge|'
             r'raid0|read|reads|real|references|regexp|release|rename|repeat|'
             r'replace|require|restrict|return|revoke|right|rlike|schema|'
             r'schemas|second_microsecond|select|sensitive|separator|set|'
             r'show|smallint|soname|spatial|specific|sql|sql_big_result|'
             r'sql_calc_found_rows|sql_small_result|sqlexception|sqlstate|'
             r'sqlwarning|ssl|starting|straight_join|table|terminated|then|'
             r'to|trailing|trigger|undo|union|unique|unlock|unsigned|update|'
             r'usage|use|using|utc_date|utc_time|utc_timestamp|values|'
             r'varying|when|where|while|with|write|x509|xor|year_month|'
             r'zerofill)\b', Keyword),
            # TODO: this list is not complete
            (r'\b(auto_increment|engine|charset|tables)\b', Keyword.Pseudo),
            (r'(true|false|null)', Name.Constant),
            (r'([a-z_]\w*)(\s*)(\()',
             bygroups(Name.Function, Text, Punctuation)),
            (r'[a-z_]\w*', Name),
            (r'@[a-z0-9]*[._]*[a-z0-9]*', Name.Variable),
            (r'[;:()\[\],\.]', Punctuation)
        ],
        'multiline-comments': [
            (r'/\*', Comment.Multiline, 'multiline-comments'),
            (r'\*/', Comment.Multiline, '#pop'),
            (r'[^/\*]+', Comment.Multiline),
            (r'[/*]', Comment.Multiline)
        ]
    }


class SqliteConsoleLexer(Lexer):
    """
    Lexer for example sessions using sqlite3.

    .. versionadded:: 0.11
    """

    name = 'sqlite3con'
    aliases = ['sqlite3']
    filenames = ['*.sqlite3-console']
    mimetypes = ['text/x-sqlite3-console']

    def get_tokens_unprocessed(self, data):
        sql = SqlLexer(**self.options)

        curcode = ''
        insertions = []
        for match in line_re.finditer(data):
            line = match.group()
            if line.startswith('sqlite> ') or line.startswith('   ...> '):
                insertions.append((len(curcode),
                                   [(0, Generic.Prompt, line[:8])]))
                curcode += line[8:]
            else:
                if curcode:
                    for item in do_insertions(insertions,
                                              sql.get_tokens_unprocessed(curcode)):
                        yield item
                    curcode = ''
                    insertions = []
                if line.startswith('SQL error: '):
                    yield (match.start(), Generic.Traceback, line)
                else:
                    yield (match.start(), Generic.Output, line)
        if curcode:
            for item in do_insertions(insertions,
                                      sql.get_tokens_unprocessed(curcode)):
                yield item


class RqlLexer(RegexLexer):
    """
    Lexer for Relation Query Language.

    `RQL <http://www.logilab.org/project/rql>`_

    .. versionadded:: 2.0
    """
    name = 'RQL'
    aliases = ['rql']
    filenames = ['*.rql']
    mimetypes = ['text/x-rql']

    flags = re.IGNORECASE
    tokens = {
        'root': [
            (r'\s+', Text),
            (r'(DELETE|SET|INSERT|UNION|DISTINCT|WITH|WHERE|BEING|OR'
             r'|AND|NOT|GROUPBY|HAVING|ORDERBY|ASC|DESC|LIMIT|OFFSET'
             r'|TODAY|NOW|TRUE|FALSE|NULL|EXISTS)\b', Keyword),
            (r'[+*/<>=%-]', Operator),
            (r'(Any|is|instance_of|CWEType|CWRelation)\b', Name.Builtin),
            (r'[0-9]+', Number.Integer),
            (r'[A-Z_]\w*\??', Name),
            (r"'(''|[^'])*'", String.Single),
            (r'"(""|[^"])*"', String.Single),
            (r'[;:()\[\],\.]', Punctuation)
        ],
    }
