Class: Membrane::SchemaParser

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

Defined Under Namespace

Classes: Dsl

Constant Summary collapse

DEPARSE_INDENT = 
"  ".freeze

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.deparse(schema) ⇒ Object 



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# File 'lib/membrane/schema_parser.rb', line 44

def self.deparse(schema)
  new.deparse(schema)
end

.parse(&blk) ⇒ Object 



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# File 'lib/membrane/schema_parser.rb', line 40

def self.parse(&blk)
  new.parse(&blk)
end

Instance Method Details

#deparse(schema) ⇒ Object 



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# File 'lib/membrane/schema_parser.rb', line 54

def deparse(schema)
  case schema
  when Membrane::Schemas::Any
    "any"
  when Membrane::Schemas::Bool
    "bool"
  when Membrane::Schemas::Class
    schema.klass.name
  when Membrane::Schemas::Dictionary
    "dict(%s, %s)" % [deparse(schema.key_schema),
                      deparse(schema.value_schema)]
  when Membrane::Schemas::Enum
    "enum(%s)" % [schema.elem_schemas.map { |es| deparse(es) }.join(", ")]
  when Membrane::Schemas::List
    "[%s]" % [deparse(schema.elem_schema)]
  when Membrane::Schemas::Record
    deparse_record(schema)
  when Membrane::Schemas::Regexp
    schema.regexp.inspect
  when Membrane::Schemas::Tuple
    "tuple(%s)" % [schema.elem_schemas.map { |es| deparse(es) }.join(", ")]
  when Membrane::Schemas::Value
    schema.value.inspect
  when Membrane::Schemas::Base
    schema.inspect
  else
    emsg = "Expected instance of Membrane::Schemas::Base, given instance of" \
           + " #{schema.class}"
    raise ArgumentError.new(emsg)
  end
end

#parse(&blk) ⇒ Object 



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# File 'lib/membrane/schema_parser.rb', line 48

def parse(&blk)
  intermediate_schema = Dsl.new.instance_eval(&blk)

  do_parse(intermediate_schema)
end