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##
## $Release:$
## $Copyright$
##
require 'erubis/engine'
require 'erubis/enhancer'
module Erubis
module CppGenerator
include Generator
def self.supported_properties() # :nodoc:
return [
[:indent, '', "indent spaces (ex. ' ')"],
[:bufvar, '_buf', "buffer variable name"],
]
end
def init_generator(properties={})
super
@escapefunc ||= "escape"
@indent = properties[:indent] || ''
@bufvar = properties[:bufvar] || '_buf'
end
def add_preamble(src)
src << "#line 1 \"#{self.filename}\"\n" if self.filename
end
def escape_text(text)
@@table_ ||= { "\r"=>"\\r", "\n"=>"\\n", "\t"=>"\\t", '"'=>'\\"', "\\"=>"\\\\" }
text.gsub!(/[\r\n\t"\\]/) { |m| @@table_[m] }
return text
end
def escaped_expr(code)
return "#{@escapefunc}(#{code.strip})"
end
def add_text(src, text)
return if text.empty?
src << (src.empty? || src[-1] == ?\n ? @indent : ' ')
src << "_buf << "
i = 0
text.each_line do |line|
src << "\n" << @indent << " " if i > 0
i += 1
src << '"' << escape_text(line) << '"'
end
src << ";" #<< (text[-1] == ?\n ? "\n" : "")
src << "\n" if text[-1] == ?\n
end
def add_stmt(src, code)
src << code
end
def add_expr_literal(src, code)
src << @indent if src.empty? || src[-1] == ?\n
src << " _buf << (" << code.strip << ");"
end
def add_expr_escaped(src, code)
src << @indent if src.empty? || src[-1] == ?\n
src << ' ' << escaped_expr(code) << ';'
end
def add_expr_debug(src, code)
code.strip!
src << @indent if src.empty? || src[-1] == ?\n
src << " std::cerr << \"*** debug: #{code.gsub(/(")/, '\\\&')}=\" << (#{code});"
end
def add_postamble(src)
# empty
end
end
##
## engine for C
##
class Ecpp < Basic::Engine
include CppGenerator
end
class EscapedEcpp < Ecpp
include EscapeEnhancer
end
#class XmlEcpp < Ecpp
# include EscapeEnhancer
#end
class PI::Ecpp < PI::Engine
include CppGenerator
def init_converter(properties={})
@pi = 'cpp'
super(properties)
end
end
end
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