Add lexers for DASM16, Augeas, TOML, and Slash

Lexers copied unmodified from
https://github.com/liluo/pygments-github-lexers
which is available under a 2-clause BSD license (same as pygments),
copyright 2012 to GitHub, Inc.

Fixes #1391 and #1150.

6 files changed, 376 insertions, 2 deletions

diff --git a/AUTHORS b/AUTHORS
index ed9c547c..e6f90fea 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -221,5 +221,6 @@ Other contributors, listed alphabetically, are:
 * Rob Zimmerman -- Kal lexer
 * Vincent Zurczak -- Roboconf lexer
 * Rostyslav Golda -- FloScript lexer
+* GitHub, Inc -- DASM16, Augeas, TOML, and Slash lexers
 
 Many thanks for all contributions!
diff --git a/CHANGES b/CHANGES
index 15863b27..3464ef22 100644
--- a/CHANGES
+++ b/CHANGES
@@ -19,6 +19,10 @@ Version 2.4.0
   * Slurm (PR#760)
   * Unicon (PR#731)
   * VBScript (PR#673)
+  * DASM16 (PR#807)
+  * Augeas (PR#807)
+  * TOML (PR#807)
+  * Slash (PR#807)
 
 - Updated lexers:
 
diff --git a/pygments/lexers/_mapping.py b/pygments/lexers/_mapping.py
index 6e0f728c..3c05d147 100644
--- a/pygments/lexers/_mapping.py
+++ b/pygments/lexers/_mapping.py
@@ -44,6 +44,7 @@ LEXERS = {
     'ArduinoLexer': ('pygments.lexers.c_like', 'Arduino', ('arduino',), ('*.ino',), ('text/x-arduino',)),
     'AspectJLexer': ('pygments.lexers.jvm', 'AspectJ', ('aspectj',), ('*.aj',), ('text/x-aspectj',)),
     'AsymptoteLexer': ('pygments.lexers.graphics', 'Asymptote', ('asy', 'asymptote'), ('*.asy',), ('text/x-asymptote',)),
+    'AugeasLexer': ('pygments.lexers.configs', 'Augeas', ('augeas',), ('*.aug'), ()),
     'AutoItLexer': ('pygments.lexers.automation', 'AutoIt', ('autoit',), ('*.au3',), ('text/x-autoit',)),
     'AutohotkeyLexer': ('pygments.lexers.automation', 'autohotkey', ('ahk', 'autohotkey'), ('*.ahk', '*.ahkl'), ('text/x-autohotkey',)),
     'AwkLexer': ('pygments.lexers.textedit', 'Awk', ('awk', 'gawk', 'mawk', 'nawk'), ('*.awk',), ('application/x-awk',)),
@@ -121,6 +122,7 @@ LEXERS = {
     'DObjdumpLexer': ('pygments.lexers.asm', 'd-objdump', ('d-objdump',), ('*.d-objdump',), ('text/x-d-objdump',)),
     'DarcsPatchLexer': ('pygments.lexers.diff', 'Darcs Patch', ('dpatch',), ('*.dpatch', '*.darcspatch'), ()),
     'DartLexer': ('pygments.lexers.javascript', 'Dart', ('dart',), ('*.dart',), ('text/x-dart',)),
+    'Dasm16Lexer': ('pygments.lexers.asm', 'DASM16', ('dasm16',), ('*.dasm16', '*.dasm'), ('text/x-dasm16')),
     'DebianControlLexer': ('pygments.lexers.installers', 'Debian Control file', ('control', 'debcontrol'), ('control',), ()),
     'DelphiLexer': ('pygments.lexers.pascal', 'Delphi', ('delphi', 'pas', 'pascal', 'objectpascal'), ('*.pas', '*.dpr'), ('text/x-pascal',)),
     'DgLexer': ('pygments.lexers.python', 'dg', ('dg',), ('*.dg',), ('text/x-dg',)),
@@ -375,6 +377,7 @@ LEXERS = {
     'RubyLexer': ('pygments.lexers.ruby', 'Ruby', ('rb', 'ruby', 'duby'), ('*.rb', '*.rbw', 'Rakefile', '*.rake', '*.gemspec', '*.rbx', '*.duby', 'Gemfile'), ('text/x-ruby', 'application/x-ruby')),
     'RustLexer': ('pygments.lexers.rust', 'Rust', ('rust', 'rs'), ('*.rs', '*.rs.in'), ('text/rust',)),
     'SASLexer': ('pygments.lexers.sas', 'SAS', ('sas',), ('*.SAS', '*.sas'), ('text/x-sas', 'text/sas', 'application/x-sas')),
+    'SlashLexer': ('pygments.lexers.slash', 'Slash', ('slash'), ('*.sl'), ()),
     'SLexer': ('pygments.lexers.r', 'S', ('splus', 's', 'r'), ('*.S', '*.R', '.Rhistory', '.Rprofile', '.Renviron'), ('text/S-plus', 'text/S', 'text/x-r-source', 'text/x-r', 'text/x-R', 'text/x-r-history', 'text/x-r-profile')),
     'SMLLexer': ('pygments.lexers.ml', 'Standard ML', ('sml',), ('*.sml', '*.sig', '*.fun'), ('text/x-standardml', 'application/x-standardml')),
     'SarlLexer': ('pygments.lexers.jvm', 'SARL', ('sarl',), ('*.sarl',), ('text/x-sarl',)),
@@ -421,6 +424,7 @@ LEXERS = {
     'TextLexer': ('pygments.lexers.special', 'Text only', ('text',), ('*.txt',), ('text/plain',)),
     'ThriftLexer': ('pygments.lexers.dsls', 'Thrift', ('thrift',), ('*.thrift',), ('application/x-thrift',)),
     'TodotxtLexer': ('pygments.lexers.textfmts', 'Todotxt', ('todotxt',), ('todo.txt', '*.todotxt'), ('text/x-todo',)),
+    'TOMLLexer': ('pygments.lexers.configs', 'TOML', ('toml',), ('*.toml'), ()),
     'TransactSqlLexer': ('pygments.lexers.sql', 'Transact-SQL', ('tsql', 't-sql'), ('*.sql',), ('text/x-tsql',)),
     'TreetopLexer': ('pygments.lexers.parsers', 'Treetop', ('treetop',), ('*.treetop', '*.tt'), ()),
     'TurtleLexer': ('pygments.lexers.rdf', 'Turtle', ('turtle',), ('*.ttl',), ('text/turtle', 'application/x-turtle')),
diff --git a/pygments/lexers/asm.py b/pygments/lexers/asm.py
index 2f08d510..761b3315 100644
--- a/pygments/lexers/asm.py
+++ b/pygments/lexers/asm.py
@@ -20,7 +20,7 @@ from pygments.token import Text, Name, Number, String, Comment, Punctuation, \
 
 __all__ = ['GasLexer', 'ObjdumpLexer', 'DObjdumpLexer', 'CppObjdumpLexer',
            'CObjdumpLexer', 'HsailLexer', 'LlvmLexer', 'NasmLexer',
-           'NasmObjdumpLexer', 'TasmLexer', 'Ca65Lexer']
+           'NasmObjdumpLexer', 'TasmLexer', 'Ca65Lexer', 'Dasm16Lexer']
 
 
 class GasLexer(RegexLexer):
@@ -650,3 +650,107 @@ class Ca65Lexer(RegexLexer):
         # comments in GAS start with "#"
         if re.match(r'^\s*;', text, re.MULTILINE):
             return 0.9
+
+
+class Dasm16Lexer(RegexLexer):
+    """
+    Simple lexer for DCPU-16 Assembly
+
+    Check http://0x10c.com/doc/dcpu-16.txt
+    """
+    name = 'dasm16'
+    aliases = ['DASM16']
+    filenames = ['*.dasm16', '*.dasm']
+    mimetypes = ['text/x-dasm16']
+
+    INSTRUCTIONS = [
+        'SET',
+        'ADD', 'SUB',
+        'MUL', 'MLI',
+        'DIV', 'DVI',
+        'MOD', 'MDI',
+        'AND', 'BOR', 'XOR',
+        'SHR', 'ASR', 'SHL',
+        'IFB', 'IFC', 'IFE', 'IFN', 'IFG', 'IFA', 'IFL', 'IFU',
+        'ADX', 'SBX',
+        'STI', 'STD',
+        'JSR',
+        'INT', 'IAG', 'IAS', 'RFI', 'IAQ', 'HWN', 'HWQ', 'HWI',
+    ]
+
+    REGISTERS = [
+        'A', 'B', 'C',
+        'X', 'Y', 'Z',
+        'I', 'J',
+        'SP', 'PC', 'EX',
+        'POP', 'PEEK', 'PUSH'
+    ]
+
+    # Regexes yo
+    char = r'[a-zA-Z$._0-9@]'
+    identifier = r'(?:[a-zA-Z$_]' + char + '*|\.' + char + '+)'
+    number = r'[+-]?(?:0[xX][a-zA-Z0-9]+|\d+)'
+    binary_number = r'0b[01_]+'
+    instruction = r'(?i)(' + '|'.join(INSTRUCTIONS) + ')'
+    single_char = r"'\\?" + char + "'"
+    string = r'"(\\"|[^"])*"'
+
+    def guess_identifier(lexer, match):
+        ident = match.group(0)
+        klass = Name.Variable if ident.upper() in lexer.REGISTERS else Name.Label
+        yield match.start(), klass, ident
+
+    tokens = {
+        'root': [
+            include('whitespace'),
+            (':' + identifier, Name.Label),
+            (identifier + ':', Name.Label),
+            (instruction, Name.Function, 'instruction-args'),
+            (r'\.' + identifier, Name.Function, 'data-args'),
+            (r'[\r\n]+', Text)
+        ],
+
+        'numeric' : [
+            (binary_number, Number.Integer),
+            (number, Number.Integer),
+            (single_char, String),
+        ],
+
+        'arg' : [
+            (identifier, guess_identifier),
+            include('numeric')
+        ],
+
+        'deref' : [
+            (r'\+', Punctuation),
+            (r'\]', Punctuation, '#pop'),
+            include('arg'),
+            include('whitespace')
+        ],
+
+        'instruction-line' : [
+            (r'[\r\n]+', Text, '#pop'),
+            (r';.*?$', Comment, '#pop'),
+            include('whitespace')
+        ],
+
+        'instruction-args': [
+            (r',', Punctuation),
+            (r'\[', Punctuation, 'deref'),
+            include('arg'),
+            include('instruction-line')
+        ],
+
+        'data-args' : [
+            (r',', Punctuation),
+            include('numeric'),
+            (string, String),
+            include('instruction-line')
+        ],
+
+        'whitespace': [
+            (r'\n', Text),
+            (r'\s+', Text),
+            (r';.*?\n', Comment)
+        ],
+    }
diff --git a/pygments/lexers/configs.py b/pygments/lexers/configs.py
index 206ec360..7c9bd655 100644
--- a/pygments/lexers/configs.py
+++ b/pygments/lexers/configs.py
@@ -21,7 +21,7 @@ __all__ = ['IniLexer', 'RegeditLexer', 'PropertiesLexer', 'KconfigLexer',
            'Cfengine3Lexer', 'ApacheConfLexer', 'SquidConfLexer',
            'NginxConfLexer', 'LighttpdConfLexer', 'DockerLexer',
            'TerraformLexer', 'TermcapLexer', 'TerminfoLexer',
-           'PkgConfigLexer', 'PacmanConfLexer']
+           'PkgConfigLexer', 'PacmanConfLexer', 'AugeasLexer', 'TOMLLexer']
 
 
 class IniLexer(RegexLexer):
@@ -838,3 +838,80 @@ class PacmanConfLexer(RegexLexer):
             (r'.', Text),
         ],
     }
+
+
+class AugeasLexer(RegexLexer):
+    name = 'Augeas'
+    aliases = ['augeas']
+    filenames = ['*.aug']
+
+    tokens = {
+        'root': [
+            (r'(module)(\s*)([^\s=]+)', bygroups(Keyword.Namespace, Text, Name.Namespace)),
+            (r'(let)(\s*)([^\s=]+)', bygroups(Keyword.Declaration, Text, Name.Variable)),
+            (r'(del|store|value|counter|seq|key|label|autoload|incl|excl|transform|test|get|put)(\s+)', bygroups(Name.Builtin, Text)),
+            (r'(\()([^\:]+)(\:)(unit|string|regexp|lens|tree|filter)(\))', bygroups(Punctuation, Name.Variable, Punctuation, Keyword.Type, Punctuation)),
+            (r'\(\*', Comment.Multiline, 'comment'),
+            (r'[\+=\|\.\*\;\?-]', Operator),
+            (r'[\[\]\(\)\{\}]', Operator),
+            (r'"', String.Double, 'string'),
+            (r'\/', String.Regex, 'regex'),
+            (r'([A-Z]\w*)(\.)(\w+)', bygroups(Name.Namespace, Punctuation, Name.Variable)),
+            (r'.', Name.Variable),
+            (r'\s', Text),
+        ],
+        'string': [
+            (r'\\.', String.Escape),
+            (r'[^"]', String.Double),
+            (r'"', String.Double, '#pop'),
+        ],
+        'regex': [
+            (r'\\.', String.Escape),
+            (r'[^\/]', String.Regex),
+            (r'\/', String.Regex, '#pop'),
+        ],
+        'comment': [
+            (r'[^*\)]', Comment.Multiline),
+            (r'\(\*', Comment.Multiline, '#push'),
+            (r'\*\)', Comment.Multiline, '#pop'),
+            (r'[\*\)]', Comment.Multiline)
+        ],
+    }
+
+
+class TOMLLexer(RegexLexer):
+    """
+    Lexer for TOML, a simple language for config files
+    """
+
+    name = 'TOML'
+    aliases = ['toml']
+    filenames = ['*.toml']
+
+    tokens = {
+        'root': [
+
+            # Basics, comments, strings
+            (r'\s+', Text),
+            (r'#.*?$', Comment.Single),
+            (r'"(\\\\|\\"|[^"])*"', String),
+            (r'(true|false)$', Keyword.Constant),
+            ('[a-zA-Z_][a-zA-Z0-9_\-]*', Name),
+
+            # Datetime
+            (r'\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}Z', Number.Integer),
+
+            # Numbers
+            (r'(\d+\.\d*|\d*\.\d+)([eE][+-]?[0-9]+)?j?', Number.Float),
+            (r'\d+[eE][+-]?[0-9]+j?', Number.Float),
+            (r'\-?\d+', Number.Integer),
+
+            # Punctuation
+            (r'[]{}:(),;[]', Punctuation),
+            (r'\.', Punctuation),
+
+            # Operators
+            (r'=', Operator)
+
+        ]
+    }
diff --git a/pygments/lexers/slash.py b/pygments/lexers/slash.py
new file mode 100644
index 00000000..f18059f7
--- /dev/null
+++ b/pygments/lexers/slash.py
@@ -0,0 +1,184 @@
+# -*- coding: utf-8 -*-
+"""
+    pygments.lexers.slash
+    ~~~~~~~~~~~~~~~~~~~~~
+
+    Lexer for the Slash programming language.
+
+    :copyright: Copyright 2012 by GitHub, Inc
+    :license: BSD, see LICENSE for details.
+"""
+
+import re
+
+from pygments.lexer import ExtendedRegexLexer, bygroups, DelegatingLexer
+from pygments.token import Name, Number, String, Comment, Punctuation, \
+     Other, Keyword, Operator, Whitespace
+
+__all__ = ['SlashLexer']
+
+
+class SlashLanguageLexer(ExtendedRegexLexer):
+    _nkw = r'(?=[^a-zA-Z_0-9])'
+
+    def move_state(new_state):
+        return ("#pop", new_state)
+
+    def right_angle_bracket(lexer, match, ctx):
+        if len(ctx.stack) > 1 and ctx.stack[-2] == "string":
+            ctx.stack.pop()
+        yield match.start(), String.Interpol, "}"
+        ctx.pos = match.end()
+        pass
+
+    tokens = {
+        "root": [
+            (r"<%=",        Comment.Preproc,    move_state("slash")),
+            (r"<%!!",       Comment.Preproc,    move_state("slash")),
+            (r"<%#.*?%>",   Comment.Multiline),
+            (r"<%",         Comment.Preproc,    move_state("slash")),
+            (r".|\n",       Other),
+        ],
+        "string": [
+            (r"\\",         String.Escape,      move_state("string_e")),
+            (r"\"",         String,             move_state("slash")),
+            (r"#\{",        String.Interpol,    "slash"),
+            (r'.|\n',       String),
+        ],
+        "string_e": [
+            (r'n',                  String.Escape,      move_state("string")),
+            (r't',                  String.Escape,      move_state("string")),
+            (r'r',                  String.Escape,      move_state("string")),
+            (r'e',                  String.Escape,      move_state("string")),
+            (r'x[a-fA-F0-9]{2}',    String.Escape,      move_state("string")),
+            (r'.',                  String.Escape,      move_state("string")),
+        ],
+        "regexp": [
+            (r'}[a-z]*',            String.Regex,       move_state("slash")),
+            (r'\\(.|\n)',           String.Regex),
+            (r'{',                  String.Regex,       "regexp_r"),
+            (r'.|\n',               String.Regex),
+        ],
+        "regexp_r": [
+            (r'}[a-z]*',            String.Regex,       "#pop"),
+            (r'\\(.|\n)',           String.Regex),
+            (r'{',                  String.Regex,       "regexp_r"),
+        ],
+        "slash": [
+            (r"%>",                     Comment.Preproc,    move_state("root")),
+            (r"\"",                     String,             move_state("string")),
+            (r"'[a-zA-Z0-9_]+",         String),
+            (r'%r{',                    String.Regex,       move_state("regexp")),
+            (r'/\*.*?\*/',              Comment.Multiline),
+            (r"(#|//).*?\n",            Comment.Single),
+            (r'-?[0-9]+e[+-]?[0-9]+',   Number.Float),
+            (r'-?[0-9]+\.[0-9]+(e[+-]?[0-9]+)?', Number.Float),
+            (r'-?[0-9]+',               Number.Integer),
+            (r'nil'+_nkw,               Name.Builtin),
+            (r'true'+_nkw,              Name.Builtin),
+            (r'false'+_nkw,             Name.Builtin),
+            (r'self'+_nkw,              Name.Builtin),
+            (r'(class)(\s+)([A-Z][a-zA-Z0-9_\']*)',
+                bygroups(Keyword, Whitespace, Name.Class)),
+            (r'class'+_nkw,             Keyword),
+            (r'extends'+_nkw,           Keyword),
+            (r'(def)(\s+)(self)(\s*)(\.)(\s*)([a-z_][a-zA-Z0-9_\']*=?|<<|>>|==|<=>|<=|<|>=|>|\+|-(self)?|~(self)?|\*|/|%|^|&&|&|\||\[\]=?)',
+                bygroups(Keyword, Whitespace, Name.Builtin, Whitespace, Punctuation, Whitespace, Name.Function)),
+            (r'(def)(\s+)([a-z_][a-zA-Z0-9_\']*=?|<<|>>|==|<=>|<=|<|>=|>|\+|-(self)?|~(self)?|\*|/|%|^|&&|&|\||\[\]=?)',
+                bygroups(Keyword, Whitespace, Name.Function)),
+            (r'def'+_nkw,               Keyword),
+            (r'if'+_nkw,                Keyword),
+            (r'elsif'+_nkw,             Keyword),
+            (r'else'+_nkw,              Keyword),
+            (r'unless'+_nkw,            Keyword),
+            (r'for'+_nkw,               Keyword),
+            (r'in'+_nkw,                Keyword),
+            (r'while'+_nkw,             Keyword),
+            (r'until'+_nkw,             Keyword),
+            (r'and'+_nkw,               Keyword),
+            (r'or'+_nkw,                Keyword),
+            (r'not'+_nkw,               Keyword),
+            (r'lambda'+_nkw,            Keyword),
+            (r'try'+_nkw,               Keyword),
+            (r'catch'+_nkw,             Keyword),
+            (r'return'+_nkw,            Keyword),
+            (r'next'+_nkw,              Keyword),
+            (r'last'+_nkw,              Keyword),
+            (r'throw'+_nkw,             Keyword),
+            (r'use'+_nkw,               Keyword),
+            (r'switch'+_nkw,            Keyword),
+            (r'\\',                     Keyword),
+            (r'λ',                      Keyword),
+            (r'__FILE__'+_nkw,          Name.Builtin.Pseudo),
+            (r'__LINE__'+_nkw,          Name.Builtin.Pseudo),
+            (r'[A-Z][a-zA-Z0-9_\']*'+_nkw, Name.Constant),
+            (r'[a-z_][a-zA-Z0-9_\']*'+_nkw, Name),
+            (r'@[a-z_][a-zA-Z0-9_\']*'+_nkw, Name.Variable.Instance),
+            (r'@@[a-z_][a-zA-Z0-9_\']*'+_nkw, Name.Variable.Class),
+            (r'\(',                     Punctuation),
+            (r'\)',                     Punctuation),
+            (r'\[',                     Punctuation),
+            (r'\]',                     Punctuation),
+            (r'\{',                     Punctuation),
+            (r'\}',                     right_angle_bracket),
+            (r';',                      Punctuation),
+            (r',',                      Punctuation),
+            (r'<<=',                    Operator),
+            (r'>>=',                    Operator),
+            (r'<<',                     Operator),
+            (r'>>',                     Operator),
+            (r'==',                     Operator),
+            (r'!=',                     Operator),
+            (r'=>',                     Operator),
+            (r'=',                      Operator),
+            (r'<=>',                    Operator),
+            (r'<=',                     Operator),
+            (r'>=',                     Operator),
+            (r'<',                      Operator),
+            (r'>',                      Operator),
+            (r'\+\+',                   Operator),
+            (r'\+=',                    Operator),
+            (r'-=',                     Operator),
+            (r'\*\*=',                  Operator),
+            (r'\*=',                    Operator),
+            (r'\*\*',                   Operator),
+            (r'\*',                     Operator),
+            (r'/=',                     Operator),
+            (r'\+',                     Operator),
+            (r'-',                      Operator),
+            (r'/',                      Operator),
+            (r'%=',                     Operator),
+            (r'%',                      Operator),
+            (r'^=',                     Operator),
+            (r'&&=',                    Operator),
+            (r'&=',                     Operator),
+            (r'&&',                     Operator),
+            (r'&',                      Operator),
+            (r'\|\|=',                  Operator),
+            (r'\|=',                    Operator),
+            (r'\|\|',                   Operator),
+            (r'\|',                     Operator),
+            (r'!',                      Operator),
+            (r'\.\.\.',                 Operator),
+            (r'\.\.',                   Operator),
+            (r'\.',                     Operator),
+            (r'::',                     Operator),
+            (r':',                      Operator),
+            (r'(\s|\n)+',               Whitespace),
+            (r'[a-z_][a-zA-Z0-9_\']*',  Name.Variable),
+        ],
+    }
+
+
+class SlashLexer(DelegatingLexer):
+    """
+    Lexer for the Slash programming language.
+    """
+
+    name = 'Slash'
+    aliases = ['slash']
+    filenames = ['*.sl']
+
+    def __init__(self, **options):
+        from pygments.lexers.web import HtmlLexer
+        super(SlashLexer, self).__init__(HtmlLexer, SlashLanguageLexer, **options)