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