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module CodeRay
module Scanners
class Delphi < Scanner
register_for :delphi
RESERVED_WORDS = [
'and', 'array', 'as', 'at', 'asm', 'at', 'begin', 'case', 'class',
'const', 'constructor', 'destructor', 'dispinterface', 'div', 'do',
'downto', 'else', 'end', 'except', 'exports', 'file', 'finalization',
'finally', 'for', 'function', 'goto', 'if', 'implementation', 'in',
'inherited', 'initialization', 'inline', 'interface', 'is', 'label',
'library', 'mod', 'nil', 'not', 'object', 'of', 'or', 'out', 'packed',
'procedure', 'program', 'property', 'raise', 'record', 'repeat',
'resourcestring', 'set', 'shl', 'shr', 'string', 'then', 'threadvar',
'to', 'try', 'type', 'unit', 'until', 'uses', 'var', 'while', 'with',
'xor', 'on'
]
DIRECTIVES = [
'absolute', 'abstract', 'assembler', 'at', 'automated', 'cdecl',
'contains', 'deprecated', 'dispid', 'dynamic', 'export',
'external', 'far', 'forward', 'implements', 'local',
'near', 'nodefault', 'on', 'overload', 'override',
'package', 'pascal', 'platform', 'private', 'protected', 'public',
'published', 'read', 'readonly', 'register', 'reintroduce',
'requires', 'resident', 'safecall', 'stdcall', 'stored', 'varargs',
'virtual', 'write', 'writeonly'
]
IDENT_KIND = CaseIgnoringWordList.new(:ident, caching=true).
add(RESERVED_WORDS, :reserved).
add(DIRECTIVES, :directive)
NAME_FOLLOWS = CaseIgnoringWordList.new(false, caching=true).
add(%w(procedure function .))
private
def scan_tokens tokens, options
state = :initial
last_token = ''
until eos?
kind = nil
match = nil
if state == :initial
if scan(/ \s+ /x)
tokens << [matched, :space]
next
elsif scan(%r! \{ \$ [^}]* \}? | \(\* \$ (?: .*? \*\) | .* ) !mx)
tokens << [matched, :preprocessor]
next
elsif scan(%r! // [^\n]* | \{ [^}]* \}? | \(\* (?: .*? \*\) | .* ) !mx)
tokens << [matched, :comment]
next
elsif match = scan(/ <[>=]? | >=? | :=? | [-+=*\/;,@\^|\(\)\[\]] | \.\. /x)
kind = :operator
elsif match = scan(/\./)
kind = :operator
if last_token == 'end'
tokens << [match, kind]
next
end
elsif match = scan(/ [A-Za-z_][A-Za-z_0-9]* /x)
kind = NAME_FOLLOWS[last_token] ? :ident : IDENT_KIND[match]
elsif match = scan(/ ' ( [^\n']|'' ) (?:'|$) /x)
tokens << [:open, :char]
tokens << ["'", :delimiter]
tokens << [self[1], :content]
tokens << ["'", :delimiter]
tokens << [:close, :char]
next
elsif match = scan(/ ' /x)
tokens << [:open, :string]
state = :string
kind = :delimiter
elsif scan(/ \# (?: \d+ | \$[0-9A-Fa-f]+ ) /x)
kind = :char
elsif scan(/ \$ [0-9A-Fa-f]+ /x)
kind = :hex
elsif scan(/ (?: \d+ ) (?![eE]|\.[^.]) /x)
kind = :integer
elsif scan(/ \d+ (?: \.\d+ (?: [eE][+-]? \d+ )? | [eE][+-]? \d+ ) /x)
kind = :float
else
kind = :error
getch
end
elsif state == :string
if scan(/[^\n']+/)
kind = :content
elsif scan(/''/)
kind = :char
elsif scan(/'/)
tokens << ["'", :delimiter]
tokens << [:close, :string]
state = :initial
next
elsif scan(/\n/)
tokens << [:close, :string]
kind = :error
state = :initial
else
raise "else case \' reached; %p not handled." % peek(1), tokens
end
else
raise 'else-case reached', tokens
end
match ||= matched
if $DEBUG and not kind
raise_inspect 'Error token %p in line %d' %
[[match, kind], line], tokens, state
end
raise_inspect 'Empty token', tokens unless match
last_token = match
tokens << [match, kind]
end
tokens
end
end
end
end
|
