Class: Shift::ShiftBuilder

Inherits:
Object
  • Object
show all
Defined in:
lib/shift-lang/builder.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ ShiftBuilder

Returns a new instance of ShiftBuilder.



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# File 'lib/shift-lang/builder.rb', line 10

def initialize()
	@models = []
	@handlers = []
	@clean = true
end

Instance Attribute Details

#clean ⇒ Object

Returns the value of attribute clean.



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# File 'lib/shift-lang/builder.rb', line 8

def clean
  @clean
end

#handlers ⇒ Object

Returns the value of attribute handlers.



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# File 'lib/shift-lang/builder.rb', line 8

def handlers
  @handlers
end

#models ⇒ Object

Returns the value of attribute models.



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# File 'lib/shift-lang/builder.rb', line 8

def models
  @models
end

Instance Method Details

#add_handler(handler) ⇒ Object 



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# File 'lib/shift-lang/builder.rb', line 121

def add_handler(handler)
	@handlers.push handler
end

#add_model(model) ⇒ Object 



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# File 'lib/shift-lang/builder.rb', line 117

def add_model(model)
	@models.push model
end

#get_data_from_file(file_name) ⇒ Object 



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# File 'lib/shift-lang/builder.rb', line 16

def get_data_from_file(file_name)
	parser = Shift::ShiftParser.new

	model = nil

	url_handler = nil

	last_statement = ""
	this_statement = ""

	url = ""

	line_number = 0

	File.open(file_name) do |file|
		while line = file.gets
			parts = line.split("\t")
			num_tabs = parts.length - 1
			line = line.strip
			line_number += 1
			if line != ""
				begin
				statement = parser.parse(line)

				this_statement = statement.keys[0]

				case this_statement

				when :model_definition_statement
					if num_tabs != 0
						@clean = false
						puts "Error at line #{line_number} character 1 : #{line}"
					end
					model = Builder::DBModel.new(statement[:model_definition_statement][:model_name])

				when :model_attribute_definition_statement
					if num_tabs != 1
						@clean = false
						puts "Error at line #{line_number} character 1 : #{line}"
					end
					model_attribute = statement[:model_attribute_definition_statement]
					model.add_attribute(model_attribute[:attribute_name], model_attribute[:attribute_type])

				when :url
					if (last_statement == :model_attribute_definition_statement)
						add_model model
					end

					if num_tabs != 0
						@clean = false
						puts "Error at line #{line_number} character 1 : #{line}"
					end
					
					url = statement[:url]
				when :url_method
					if url_handler
						add_handler url_handler
					end

					if num_tabs != 1
						@clean = false
						puts "Error at line #{line_number} character 1 : #{line}"
					end

					url_handler = Builder::UrlHandler.new(url, statement[:url_method].to_s)
				else
					if num_tabs < 2
						@clean = false
						puts "Error at line #{line_number} character 1 : #{line}"
					end
					stmt = {
						:statement => statement, 
						:num_tabs => num_tabs
					}
					if !url_handler 
						url_handler = Builder::UrlHandler.new("", "")
					end	
					url_handler.add_statement stmt
				end			

				last_statement = this_statement

				rescue Parslet::ParseFailed => parse_error
					error = parse_error.to_s
					error =  error.split(" ")
					puts "Error at line #{line_number} character #{error[error.length - 1]} : #{line}"
					@clean = false
				end
			end
		end
	end

	if (last_statement == :model_attribute_definition_statement)
		add_model model
	else
		add_handler url_handler
	end

	self
end