Class: Ascode::Parser::Main

Inherits:
Object
  • Object
show all
Defined in:
lib/ascode/parser/main.rb

Instance Method Summary collapse

Constructor Details

#initialize(code, impl_o = true) ⇒ Main

Returns a new instance of Main.



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# File 'lib/ascode/parser/main.rb', line 8

def initialize(code, impl_o = true)
  @function = Function.new
  @code = code

  @do_implicit_output = impl_o
end

Instance Method Details

#block(index) ⇒ Object 



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# File 'lib/ascode/parser/main.rb', line 50

def block(index)
  block = ConditionBlock.new @code, index
  @ast.push block.parse
  @skip_chars = block.block.length
end

#character(char, index) ⇒ Object 



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# File 'lib/ascode/parser/main.rb', line 34

def character(char, index)
  if char == "\"" || char =~ /[0-9.]/
    literal index
  elsif char == "["
    block index
  else
    function char
  end
end

#function(char) ⇒ Object 



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# File 'lib/ascode/parser/main.rb', line 56

def function(char)
  function = @function.parse char
  return unless function
  @implicit_output = false if function[:action] == "output"
  @ast.push function
end

#literal(index) ⇒ Object 



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# File 'lib/ascode/parser/main.rb', line 44

def literal(index)
  literal = Literal.new @code, index
  @ast.push literal.parse
  @skip_chars = literal.length
end

#parse ⇒ Object 



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# File 'lib/ascode/parser/main.rb', line 15

def parse
  @ast = []
  @skip_chars = 0
  @implicit_output = @do_implicit_output

  @code.split("").to_enum.each_with_index do |char, index|
    if @skip_chars > 0
      @skip_chars -= 1
      next
    end

    character char, index
  end

  @ast.push(type: :io, action: "output") if @implicit_output

  @ast
end