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Mini Shell
Mini Shell
# -*- coding: utf-8 -*-
"""
pygments.lexers.hdl
~~~~~~~~~~~~~~~~~~~
Lexers for hardware descriptor languages.
:copyright: Copyright 2010 by the Pygments team, see AUTHORS.
:license: BSD, see LICENSE for details.
"""
import re
from pygments.lexer import RegexLexer, include, bygroups
from pygments.token import \
Text, Comment, Operator, Keyword, Name, String, Number, Punctuation, \
Error
__all__ = ['VerilogLexer']
class VerilogLexer(RegexLexer):
"""
For verilog source code with preprocessor directives.
*New in Pygments 1.4.*
"""
name = 'verilog'
aliases = ['v']
filenames = ['*.v', '*.sv']
mimetypes = ['text/x-verilog']
#: optional Comment or Whitespace
_ws = r'(?:\s|//.*?\n|/[*].*?[*]/)+'
tokens = {
'root': [
(r'^\s*`define', Comment.Preproc, 'macro'),
(r'\n', Text),
(r'\s+', Text),
(r'\\\n', Text), # line continuation
(r'/(\\\n)?/(\n|(.|\n)*?[^\\]\n)', Comment.Single),
(r'/(\\\n)?[*](.|\n)*?[*](\\\n)?/', Comment.Multiline),
(r'[{}#@]', Punctuation),
(r'L?"', String, 'string'),
(r"L?'(\\.|\\[0-7]{1,3}|\\x[a-fA-F0-9]{1,2}|[^\\\'\n])'", String.Char),
(r'(\d+\.\d*|\.\d+|\d+)[eE][+-]?\d+[lL]?', Number.Float),
(r'(\d+\.\d*|\.\d+|\d+[fF])[fF]?', Number.Float),
(r'([0-9]+)|(\'h)[0-9a-fA-F]+', Number.Hex),
(r'([0-9]+)|(\'b)[0-1]+', Number.Hex), # should be binary
(r'([0-9]+)|(\'d)[0-9]+', Number.Integer),
(r'([0-9]+)|(\'o)[0-7]+', Number.Oct),
(r'\'[01xz]', Number),
(r'\d+[Ll]?', Number.Integer),
(r'\*/', Error),
(r'[~!%^&*+=|?:<>/-]', Operator),
(r'[()\[\],.;\']', Punctuation),
(r'`[a-zA-Z_][a-zA-Z0-9_]*', Name.Constant),
(r'^\s*(package)(\s+)', bygroups(Keyword.Namespace, Text)),
(r'^\s*(import)(\s+)', bygroups(Keyword.Namespace, Text), 'import'),
(r'(always|always_comb|always_ff|always_latch|and|assign|automatic|'
r'begin|break|buf|bufif0|bufif1|case|casex|casez|cmos|const|'
r'continue|deassign|default|defparam|disable|do|edge|else|end|endcase|'
r'endfunction|endgenerate|endmodule|endpackage|endprimitive|endspecify|'
r'endtable|endtask|enum|event|final|for|force|forever|fork|function|'
r'generate|genvar|highz0|highz1|if|initial|inout|input|'
r'integer|join|large|localparam|macromodule|medium|module|'
r'nand|negedge|nmos|nor|not|notif0|notif1|or|output|packed|'
r'parameter|pmos|posedge|primitive|pull0|pull1|pulldown|pullup|rcmos|'
r'ref|release|repeat|return|rnmos|rpmos|rtran|rtranif0|'
r'rtranif1|scalared|signed|small|specify|specparam|strength|'
r'string|strong0|strong1|struct|table|task|'
r'tran|tranif0|tranif1|type|typedef|'
r'unsigned|var|vectored|void|wait|weak0|weak1|while|'
r'xnor|xor)\b', Keyword),
(r'(`accelerate|`autoexpand_vectornets|`celldefine|`default_nettype|'
r'`else|`elsif|`endcelldefine|`endif|`endprotect|`endprotected|'
r'`expand_vectornets|`ifdef|`ifndef|`include|`noaccelerate|`noexpand_vectornets|'
r'`noremove_gatenames|`noremove_netnames|`nounconnected_drive|'
r'`protect|`protected|`remove_gatenames|`remove_netnames|`resetall|'
r'`timescale|`unconnected_drive|`undef)\b', Comment.Preproc),
(r'(\$bits|\$bitstoreal|\$bitstoshortreal|\$countdrivers|\$display|\$fclose|'
r'\$fdisplay|\$finish|\$floor|\$fmonitor|\$fopen|\$fstrobe|\$fwrite|'
r'\$getpattern|\$history|\$incsave|\$input|\$itor|\$key|\$list|\$log|'
r'\$monitor|\$monitoroff|\$monitoron|\$nokey|\$nolog|\$printtimescale|'
r'\$random|\$readmemb|\$readmemh|\$realtime|\$realtobits|\$reset|\$reset_count|'
r'\$reset_value|\$restart|\$rtoi|\$save|\$scale|\$scope|\$shortrealtobits|'
r'\$showscopes|\$showvariables|\$showvars|\$sreadmemb|\$sreadmemh|'
r'\$stime|\$stop|\$strobe|\$time|\$timeformat|\$write)\b', Name.Builtin),
(r'(class)(\s+)', bygroups(Keyword, Text), 'classname'),
(r'(byte|shortint|int|longint|interger|time|'
r'bit|logic|reg|'
r'supply0|supply1|tri|triand|trior|tri0|tri1|trireg|uwire|wire|wand|wor'
r'shortreal|real|realtime)\b', Keyword.Type),
('[a-zA-Z_][a-zA-Z0-9_]*:(?!:)', Name.Label),
('[a-zA-Z_][a-zA-Z0-9_]*', Name),
],
'classname': [
(r'[a-zA-Z_][a-zA-Z0-9_]*', Name.Class, '#pop'),
],
'string': [
(r'"', String, '#pop'),
(r'\\([\\abfnrtv"\']|x[a-fA-F0-9]{2,4}|[0-7]{1,3})', String.Escape),
(r'[^\\"\n]+', String), # all other characters
(r'\\\n', String), # line continuation
(r'\\', String), # stray backslash
],
'macro': [
(r'[^/\n]+', Comment.Preproc),
(r'/[*](.|\n)*?[*]/', Comment.Multiline),
(r'//.*?\n', Comment.Single, '#pop'),
(r'/', Comment.Preproc),
(r'(?<=\\)\n', Comment.Preproc),
(r'\n', Comment.Preproc, '#pop'),
],
'import': [
(r'[a-zA-Z0-9_:]+\*?', Name.Namespace, '#pop')
]
}
def get_tokens_unprocessed(self, text):
for index, token, value in \
RegexLexer.get_tokens_unprocessed(self, text):
# Convention: mark all upper case names as constants
if token is Name:
if value.isupper():
token = Name.Constant
yield index, token, value
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