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"""
pygments.lexers.oberon
~~~~~~~~~~~~~~~~~~~~~~
Lexers for Oberon family languages.
:copyright: Copyright 2006-2022 by the Pygments team, see AUTHORS.
:license: BSD, see LICENSE for details.
"""
import re
from pygments.lexer import RegexLexer, include, words
from pygments.token import Text, Comment, Operator, Keyword, Name, String, \
Number, Punctuation
__all__ = ['ComponentPascalLexer']
class ComponentPascalLexer(RegexLexer):
"""
For Component Pascal source code.
.. versionadded:: 2.1
"""
name = 'Component Pascal'
aliases = ['componentpascal', 'cp']
filenames = ['*.cp', '*.cps']
mimetypes = ['text/x-component-pascal']
flags = re.MULTILINE | re.DOTALL
tokens = {
'root': [
include('whitespace'),
include('comments'),
include('punctuation'),
include('numliterals'),
include('strings'),
include('operators'),
include('builtins'),
include('identifiers'),
],
'whitespace': [
(r'\n+', Text), # blank lines
(r'\s+', Text), # whitespace
],
'comments': [
(r'\(\*([^$].*?)\*\)', Comment.Multiline),
# TODO: nested comments (* (* ... *) ... (* ... *) *) not supported!
],
'punctuation': [
(r'[()\[\]{},.:;|]', Punctuation),
],
'numliterals': [
(r'[0-9A-F]+X\b', Number.Hex), # char code
(r'[0-9A-F]+[HL]\b', Number.Hex), # hexadecimal number
(r'[0-9]+\.[0-9]+E[+-][0-9]+', Number.Float), # real number
(r'[0-9]+\.[0-9]+', Number.Float), # real number
(r'[0-9]+', Number.Integer), # decimal whole number
],
'strings': [
(r"'[^\n']*'", String), # single quoted string
(r'"[^\n"]*"', String), # double quoted string
],
'operators': [
# Arithmetic Operators
(r'[+-]', Operator),
(r'[*/]', Operator),
# Relational Operators
(r'[=#<>]', Operator),
# Dereferencing Operator
(r'\^', Operator),
# Logical AND Operator
(r'&', Operator),
# Logical NOT Operator
(r'~', Operator),
# Assignment Symbol
(r':=', Operator),
# Range Constructor
(r'\.\.', Operator),
(r'\$', Operator),
],
'identifiers': [
(r'([a-zA-Z_$][\w$]*)', Name),
],
'builtins': [
(words((
'ANYPTR', 'ANYREC', 'BOOLEAN', 'BYTE', 'CHAR', 'INTEGER', 'LONGINT',
'REAL', 'SET', 'SHORTCHAR', 'SHORTINT', 'SHORTREAL'
), suffix=r'\b'), Keyword.Type),
(words((
'ABS', 'ABSTRACT', 'ARRAY', 'ASH', 'ASSERT', 'BEGIN', 'BITS', 'BY',
'CAP', 'CASE', 'CHR', 'CLOSE', 'CONST', 'DEC', 'DIV', 'DO', 'ELSE',
'ELSIF', 'EMPTY', 'END', 'ENTIER', 'EXCL', 'EXIT', 'EXTENSIBLE', 'FOR',
'HALT', 'IF', 'IMPORT', 'IN', 'INC', 'INCL', 'IS', 'LEN', 'LIMITED',
'LONG', 'LOOP', 'MAX', 'MIN', 'MOD', 'MODULE', 'NEW', 'ODD', 'OF',
'OR', 'ORD', 'OUT', 'POINTER', 'PROCEDURE', 'RECORD', 'REPEAT', 'RETURN',
'SHORT', 'SHORTCHAR', 'SHORTINT', 'SIZE', 'THEN', 'TYPE', 'TO', 'UNTIL',
'VAR', 'WHILE', 'WITH'
), suffix=r'\b'), Keyword.Reserved),
(r'(TRUE|FALSE|NIL|INF)\b', Keyword.Constant),
]
}
def analyse_text(text):
"""The only other lexer using .cp is the C++ one, so we check if for
a few common Pascal keywords here. Those are unfortunately quite
common across various business languages as well."""
result = 0
if 'BEGIN' in text:
result += 0.01
if 'END' in text:
result += 0.01
if 'PROCEDURE' in text:
result += 0.01
if 'END' in text:
result += 0.01
return result
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