This repository has been archived by the owner on Feb 6, 2018. It is now read-only.
forked from rubychan/coderay
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
Showing
3 changed files
with
222 additions
and
0 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Original file line | Diff line number | Diff line change |
---|---|---|---|
@@ -0,0 +1,219 @@ | |||
module CodeRay | |||
module Scanners | |||
|
|||
# Scanner for C#. | |||
# https://msdn.microsoft.com/en-us/library/ms228593.aspx | |||
class CSharp < Scanner | |||
|
|||
register_for :csharp | |||
file_extension 'cs' | |||
title 'C#' | |||
|
|||
KEYWORDS = [ | |||
'as', 'break', 'case', 'catch', 'class', 'const', 'continue', 'default', | |||
'delegate', 'do', 'else', 'enum', 'event', 'finally', 'for', 'foreach', | |||
'goto', 'if', 'in', 'interface', 'is', 'lock', 'namespace', 'new', | |||
'operator', 'out', 'params', 'readonly', 'ref', 'return', 'sizeof', | |||
'stackalloc', 'struct', 'switch', 'throw', 'try', 'typeof', 'using', | |||
'while', | |||
] # :nodoc: | |||
|
|||
PREDEFINED_TYPES = [ | |||
'bool', 'byte', 'char', 'decimal', 'double', 'float', 'int', 'long', | |||
'object', 'sbyte', 'short', 'string', 'uint', 'ulong', 'ushort', | |||
] # :nodoc: | |||
PREDEFINED_CONSTANTS = [ | |||
'false', 'null', 'true', | |||
] # :nodoc: | |||
PREDEFINED_VARIABLES = [ | |||
'base', 'this', | |||
] # :nodoc: | |||
DIRECTIVES = [ | |||
'abstract', 'checked', 'explicit', 'extern', 'fixed', 'implicit', | |||
'internal', 'override', 'private', 'protected', 'public', 'sealed', | |||
'static', 'unchecked', 'unsafe', 'virtual', 'void', 'volatile', | |||
] # :nodoc: | |||
CONTEXTUAL_KEYWORDS = [ | |||
'get', 'set', 'var', 'yield', | |||
#'add', 'alias', 'ascending', 'async', 'await', 'descending', 'dynamic', | |||
#'from', 'global', 'group', 'into', 'join', 'let', 'orderby', 'partial', | |||
#'remove', 'select', 'value', 'where', | |||
] # :nodoc: | |||
|
|||
IDENT_KIND = WordList.new(:ident). | |||
add(KEYWORDS, :keyword). | |||
add(CONTEXTUAL_KEYWORDS, :keyword). | |||
add(PREDEFINED_TYPES, :predefined_type). | |||
add(PREDEFINED_VARIABLES, :local_variable). | |||
add(DIRECTIVES, :directive). | |||
add(PREDEFINED_CONSTANTS, :predefined_constant) # :nodoc: | |||
|
|||
SINGLE_CHARACTER = / [^'\\\r\n] /x # :nodoc: | |||
ESCAPE = / \\ (?: | |||
['"\\0abfnrtv] | # simple-escape-sequence | |||
x[0-9A-Fa-f]{1,4} | # hexadecimal-escape-sequence | |||
u[0-9A-Fa-f]{4} | U[0-9A-Fa-f]{8} # unicode-escape-sequence | |||
) /x # :nodoc: | |||
SINGLE_REGULAR_STRING_LITERAL_CHARACTER = / [^"\\\r\n] /x # :nodoc: | |||
|
|||
protected | |||
|
|||
def scan_tokens encoder, options | |||
|
|||
state = :initial | |||
label_expected = true | |||
case_expected = false | |||
label_expected_before_preproc_line = nil | |||
in_preproc_line = false | |||
|
|||
until eos? | |||
|
|||
case state | |||
|
|||
when :initial | |||
|
|||
if match = scan(/ \s+ /x) | |||
if in_preproc_line && match.index(?\n) | |||
in_preproc_line = false | |||
label_expected = label_expected_before_preproc_line | |||
end | |||
encoder.text_token match, :space | |||
|
|||
elsif match = scan(%r! // [^\n]* | /\* (?: .*? \*/ | .* ) !mx) | |||
encoder.text_token match, :comment | |||
|
|||
elsif match = scan(/ \# \s* if \s* false /x) | |||
match << scan_until(/ ^\# (?:elif|else|endif) .*? $ | \z /xm) unless eos? | |||
encoder.text_token match, :comment | |||
|
|||
elsif match = scan(/ [-+*=<>?:;,!&^|()\[\]{}~%]+ | \/=? | \.(?!\d) /x) | |||
label_expected = match =~ /[;\{\}]/ | |||
if case_expected | |||
label_expected = true if match == ':' | |||
case_expected = false | |||
end | |||
encoder.text_token match, :operator | |||
|
|||
elsif match = scan(/ [A-Za-z_][A-Za-z_0-9]* /x) | |||
kind = IDENT_KIND[match] | |||
if kind == :ident && label_expected && !in_preproc_line && scan(/:(?!:)/) | |||
kind = :label | |||
match << matched | |||
else | |||
label_expected = false | |||
if kind == :keyword | |||
case match | |||
when 'class', 'interface', 'struct' | |||
state = :class_name_expected | |||
when 'case', 'default' | |||
case_expected = true | |||
end | |||
end | |||
end | |||
encoder.text_token match, kind | |||
|
|||
elsif match = scan(/"/) | |||
encoder.begin_group :regular_string | |||
state = :regular_string | |||
encoder.text_token match, :delimiter | |||
|
|||
elsif match = scan(/@"/) | |||
encoder.begin_group :verbatim_string | |||
state = :verbatim_string | |||
encoder.text_token match, :delimiter | |||
|
|||
elsif match = scan(/#[ \t]*(\w*)/) | |||
encoder.text_token match, :preprocessor | |||
in_preproc_line = true | |||
label_expected_before_preproc_line = label_expected | |||
|
|||
elsif match = scan(/ ' (?: #{SINGLE_CHARACTER} | #{ESCAPE} )? '? /ox) | |||
label_expected = false | |||
encoder.text_token match, :char | |||
|
|||
elsif match = scan(/0X[0-9A-F]+(?:UL?|LU?|)/i) | |||
label_expected = false | |||
encoder.text_token match, :hex | |||
|
|||
elsif match = scan(/(?:0[0-7]+)(?![89.DEFM])(?:UL?|LU?|)/i) | |||
label_expected = false | |||
encoder.text_token match, :octal | |||
|
|||
elsif match = scan(/(?:\d+)(?![.DEFM])(?:UL?|LU?|)/i) | |||
label_expected = false | |||
encoder.text_token match, :integer | |||
|
|||
elsif match = scan(/\d*\.\d+(?:E[+-]?\d+)?[DFM]?|\d+E[+-]?\d+[DFM]?|\d[DFM]?/i) | |||
label_expected = false | |||
encoder.text_token match, :float | |||
|
|||
else | |||
encoder.text_token getch, :error | |||
|
|||
end | |||
|
|||
when :regular_string | |||
if match = scan(/ #{SINGLE_REGULAR_STRING_LITERAL_CHARACTER}+ /ox) | |||
encoder.text_token match, :content | |||
elsif match = scan(/"/) | |||
encoder.text_token match, :delimiter | |||
encoder.end_group :regular_string | |||
state = :initial | |||
label_expected = false | |||
elsif match = scan(/ #{ESCAPE} /ox) | |||
encoder.text_token match, :char | |||
elsif match = scan(/ \\ | $ /x) | |||
encoder.end_group :regular_string | |||
encoder.text_token match, :error unless match.empty? | |||
state = :initial | |||
label_expected = false | |||
else | |||
raise_inspect "else case \" reached; %p not handled." % peek(1), encoder | |||
end | |||
|
|||
when :verbatim_string | |||
if match = scan(/[^"]+/m) | |||
encoder.text_token match, :content | |||
elsif match = scan(/""/) | |||
encoder.text_token match, :char | |||
elsif match = scan(/"/) | |||
encoder.text_token match, :delimiter | |||
encoder.end_group :verbatim_string | |||
state = :initial | |||
label_expected = false | |||
else | |||
raise_inspect "else case @\" reached; %p not handled." % peek(1), encoder | |||
end | |||
|
|||
when :class_name_expected | |||
if match = scan(/ [A-Za-z_][A-Za-z_0-9]* /x) | |||
encoder.text_token match, :class | |||
state = :initial | |||
|
|||
elsif match = scan(/\s+/) | |||
encoder.text_token match, :space | |||
|
|||
else | |||
encoder.text_token getch, :error | |||
state = :initial | |||
|
|||
end | |||
|
|||
else | |||
raise_inspect 'Unknown state', encoder | |||
|
|||
end | |||
|
|||
end | |||
|
|||
if state == :regular_string || state == :verbatim_string | |||
encoder.end_group state | |||
end | |||
|
|||
encoder | |||
end | |||
|
|||
end | |||
|
|||
end | |||
end |