Class: Koto::Parser::AST::Processor

Inherits:
Parser::AST::Processor
  • Object
show all
Defined in:
lib/koto.rb,
lib/koto/parser/ast/processor.rb,
lib/koto/parser/ast/processor/context.rb,
lib/koto/parser/ast/processor/name_processor.rb

Defined Under Namespace

Classes: Context, NameProcessor

Constant Summary collapse

OBJECT_METHODS = 
[
  *(Object.methods - [:class, :hash, :send])
]
KERNEL_METHODS = 
[
  *(Kernel.methods - OBJECT_METHODS)
]
ACCESS_METHODS = 
[
  :private,
  :protected,
  :public,
]
MODULE_METHODS = 
[
  *(Module.methods - OBJECT_METHODS)
]
PREDEFINED_METHODS = 
[
  *OBJECT_METHODS,
  *KERNEL_METHODS,
  *ACCESS_METHODS,
  *MODULE_METHODS
]
BUILTIN_TYPES = 
[
  *Object.constants
]

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Processor

Returns a new instance of Processor.



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# File 'lib/koto/parser/ast/processor.rb', line 39

def initialize
  @context = Context.new
end

Instance Attribute Details

#context ⇒ Object (readonly)

Returns the value of attribute context.



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# File 'lib/koto/parser/ast/processor.rb', line 37

def context
  @context
end

Instance Method Details

#name_processor ⇒ Object 



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# File 'lib/koto/parser/ast/processor.rb', line 47

def name_processor
  @name_processor ||= NameProcessor.new
end

#on_access(node) ⇒ Object Also known as: on_private, on_protected, on_public 



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# File 'lib/koto/parser/ast/processor.rb', line 203

def on_access(node)
  access          = node.type
  current_context = context.switch_access_to access

  switch_context_to current_context
end

#on_class(node) ⇒ Object

Methods for processing nodes



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# File 'lib/koto/parser/ast/processor.rb', line 57

def on_class(node)
  name, superclass, body = *node

  name       = name_processor.process(name)
  superclass = process superclass

  node =
    node.updated nil,
    [name, superclass, body],
    :name => name

  access          = context.access
  current_context = context.get_in(node)

  switch_context_to current_context

  node =
    node.updated nil,
    [name, superclass, process(body)],
    :name => name

  symbols, current_context = context.get_out

  current_context =
    current_context.switch_access_to access

  node =
    node.updated :casgn,
    [nil, name, node],
    :name => name, :context => current_context, :symbols => symbols

  current_context = current_context.save(node)

  switch_context_to current_context

  node
end

#on_const(node) ⇒ Object 



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# File 'lib/koto/parser/ast/processor.rb', line 169

def on_const(node)
  scope, name = *node

  if scope
    name = name_processor.process(node)
  end

  node.updated nil,
    [nil, name],
    :name => name
end

#on_def(node) ⇒ Object 



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# File 'lib/koto/parser/ast/processor.rb', line 132

def on_def(node)
  name, args, body = *node

  args = process_all(args)

  node =
    node.updated nil,
    [name, *args, body],
    :name => name

  access          = context.access
  current_context = context.get_in(node)

  switch_context_to current_context

  node =
    node.updated nil,
    [name, *args, (body = process(body))],
    :name => name

  symbols, current_context = context.get_out

  current_context =
    current_context.switch_access_to access

  node =
    node.updated nil,
    [name, *args, body],
    :name => name, :context => current_context, :symbols => symbols

  current_context = current_context.save(node)

  switch_context_to current_context

  node
end

#on_module(node) ⇒ Object 



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# File 'lib/koto/parser/ast/processor.rb', line 95

def on_module(node)
  name, body = *node

  name = name_processor.process(name)

  node =
    node.updated nil,
    [name, body],
    :name => name

  access          = context.access
  current_context = context.get_in(node)

  switch_context_to current_context

  node =
    node.updated nil,
    [name, process(body)],
    :name => name

  symbols, current_context = context.get_out

  current_context =
    current_context.switch_access_to access

  node =
    node.updated :casgn,
    [nil, name, node],
    :name => name, :context => current_context, :symbols => symbols

  current_context = current_context.save(node)

  switch_context_to current_context

  node
end

#on_send(node) ⇒ Object 



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# File 'lib/koto/parser/ast/processor.rb', line 181

def on_send(node)
  _, name, _ = *node

  # Invokes specific handlers for predefined methods
  if PREDEFINED_METHODS.include? name
    on_method = :"on_#{name}"

    if respond_to? on_method
      node = node.updated :"#{name}", node.children
      return send on_method, node
    else
      return handler_missing(node)
    end
  end

  node.updated nil,
    [nil, name],
    :name => name

  super
end

#required_files ⇒ Object 



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# File 'lib/koto/parser/ast/processor.rb', line 51

def required_files
  @required_files ||= []
end

#switch_context_to(context) ⇒ Object 



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# File 'lib/koto/parser/ast/processor.rb', line 43

def switch_context_to(context)
  @context = context
end