Class: LanguageParser::CPPLanguageScanner

Inherits:
CLanguageScanner show all
Defined in:
lib/cgialib/lp/CPPLanguageScanner.rb

Overview

Class : CPPLanguageScanner

The scanner specialized for processing C++ headers.

Instance Attribute Summary collapse

Attributes inherited from CLanguageScanner

#defines, #prototypeClass, #prototypes

Instance Method Summary collapse

Constructor Details

#initialize ⇒ CPPLanguageScanner

initialize()

Constructs the scanner object



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# File 'lib/cgialib/lp/CPPLanguageScanner.rb', line 21

def initialize()
  
  super()
  
  @classes = []
  
  @prototypeClass = Prototype
  @variableClass = ClassVariable
  @languageClass = LanguageClass
  
end

Instance Attribute Details

#classes ⇒ Object (readonly)

The classes found



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# File 'lib/cgialib/lp/CPPLanguageScanner.rb', line 33

def classes
  @classes
end

#languageClass ⇒ Object

The class to use when building class objects



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# File 'lib/cgialib/lp/CPPLanguageScanner.rb', line 35

def languageClass
  @languageClass
end

#variableClass ⇒ Object

The class to use when building variable objects



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# File 'lib/cgialib/lp/CPPLanguageScanner.rb', line 37

def variableClass
  @variableClass
end

Instance Method Details

#parse(tokens) ⇒ Object

parse( tokens )

tokens - Tokens returned from CTokenizer

Parses the tokens read from the CTokenizer



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# File 'lib/cgialib/lp/CPPLanguageScanner.rb', line 45

def parse( tokens )
  
  # Handle the function prototypes in the base class

  super( tokens )
  
  # Set up the code buffer

  codefrag = TokenStream.new()
  
  # Set up the state machine flags
  
  has_class = false
  found_open = false
  level = 0
  comments = ""
  
  # Look through the tokens for classes, and build up the full class bodies
  # in codefrag.  Then send the codefrags on to parse_class
  
  tokens.each_index { |index|
  
    tok = tokens[ index ]
  
    if ( has_class )
  
      comments = tokens.get_comments( index )
  
      codefrag.push( tok )
  
      if ( tok.to_s == "{" )
  
        level += 1
  
        found_open = true
  
      end
  
      level -= 1 if ( tok.to_s == "}" )
  
      if ( tok.to_s == ";" && level == 0 )
  
        parse_class( codefrag, comments ) if ( codefrag.length > 0 && found_open )
  
        codefrag = TokenStream.new()
  
        has_class = false
        found_open = false
  
      end
  
    end
  
    has_class = true if ( tok.to_s.downcase == "class" && level == 0 )
  
  }
  
  parse_class( codefrag, comments ) if ( codefrag.length > 0 && found_open )
  
end

#to_s ⇒ Object

to_s()

A pretty printer for the object



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# File 'lib/cgialib/lp/CPPLanguageScanner.rb', line 110

def to_s()
  
  text = ""
  
  classes.each { |cpp_class| text += cpp_class.to_s }
  
  text
  
end