Module: ScanHeader

Extended by:
ScanHeader
Included in:
ScanHeader
Defined in:
ext/lapack/extconf.rb

Instance Method Summary collapse

Instance Method Details

#ctype_canonical_form(ctype) ⇒ Object 



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# File 'ext/lapack/extconf.rb', line 63

def ctype_canonical_form(ctype)
   ctype.gsub(%r!\*!, " * ").gsub(%r!\s+!, " ").strip
end

#parse_prototype(s, argnames = true) ⇒ Object 



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# File 'ext/lapack/extconf.rb', line 67

def parse_prototype(s, argnames = true)
   func, args = s.strip.gsub(%r!\s+!, " ").split(%r![\(\)]!)
   ret, name =
      func.
      strip.
      match(%r!^(\w[*\s\w]*[*\s])(\w+)$!).
      captures
   desc = {}
   desc[:name] = name
   desc[:return] = ctype_canonical_form(ret)
   desc[:args] = []
   unless args == "" or args.strip == "void"
      args.split(",").each { |arg|
         arg.sub!(%r!\w+\s*$!, "") if argnames
         desc[:args].push(ctype_canonical_form(arg))
      }
   end
   desc
end

#scan_header(header, ppdefs = nil, &block) ⇒ Object 



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# File 'ext/lapack/extconf.rb', line 106

def scan_header(header, ppdefs = nil, &block)
   File.open(header) { |file|
      scan_header_io(file, ppdefs, &block)
   }
end

#scan_header_io(io, ppdefs = nil) ⇒ Object 



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# File 'ext/lapack/extconf.rb', line 87

def scan_header_io(io, ppdefs = nil)
   s = io.read
   s.gsub!(%r!^\s*\#.*$!, "")
   s.gsub!(%r!//.*$!, "")
   s.gsub!(%r!/\*.*?\*/!m, "")
   if ppdefs
      s.gsub!(%r!\w+!) { |word|
         if ppdefs[word]
            ppdefs[word]
         else
            word
         end
      }
   end
   s.scan(%r!\w[*\w\s]*?\w+\s*\(.*?\)\s*\;!m) { |func|
      yield parse_prototype(func)
   }
end