Class: Galena::BalanceStack

Inherits:
Object
  • Object
show all
Defined in:
lib/galena.rb

Overview

balances #= and #=end blocks

Instance Method Summary collapse

Constructor Details

#initialize ⇒ BalanceStack

Returns a new instance of BalanceStack.



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# File 'lib/galena.rb', line 189

def initialize
    @stack = []
    @seeking = false
    @block = false
end

Instance Method Details

#dedent(p = 0) ⇒ Object

return the current dedent



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# File 'lib/galena.rb', line 234

def dedent(p=0)
    if @stack.empty?
        0
    else
        @stack.last[-1-p]
    end
end

#dedent=(dd) ⇒ Object

dedent a line



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# File 'lib/galena.rb', line 229

def dedent=(dd)
    @stack.last[1]=dd
end

#do_line(line) ⇒ Object

process a new line



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# File 'lib/galena.rb', line 196

def do_line line
    s_len = line.match(/^\s*/)[0].length
    case line
    when /^\s*\^</
        @block = false
        push(s_len)
        @seeking = true
    when /^\s*\^>/
        pop
    else
        if @seeking
            if @block == true
               self.dedent = 0
            else
                self.dedent = dedent + s_len - indent
            end
        end
        @seeking = false
    end
    # puts "#{dedent}, #{@stack.length}, #{line}"
    if @stack.empty?
        line
    else
        line = Galena.ladj(line, s_len - dedent)
    end
end

#indent ⇒ Object

indent a line



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# File 'lib/galena.rb', line 224

def indent
    @stack.last[0]
end