Class: Node::BLOCK

Inherits:
Node show all
Defined in:
ext/internal/node/nodeinfo.c,
lib/internal/node/to_a.rb,
lib/internal/node/as_expression.rb,
ext/internal/node/nodeinfo.c,
ext/cached/ruby-1.8.4/internal/node/nodeinfo.c,
ext/cached/ruby-1.8.4/internal/node/nodeinfo.c,
ext/cached/ruby-1.8.5/internal/node/nodeinfo.c,
ext/cached/ruby-1.8.5/internal/node/nodeinfo.c,
ext/cached/ruby-1.8.6/internal/node/nodeinfo.c,
ext/cached/ruby-1.8.6/internal/node/nodeinfo.c,
ext/cached/ruby-1.8.7/internal/node/nodeinfo.c,
ext/cached/ruby-1.8.7/internal/node/nodeinfo.c,
ext/cached/ruby-1.9.1/internal/node/nodeinfo.c,
ext/cached/ruby-1.9.1/internal/node/nodeinfo.c,
ext/cached/ruby-1.9.2/internal/node/nodeinfo.c,
ext/cached/ruby-1.9.2/internal/node/nodeinfo.c,
ext/cached/ruby-1.9.3/internal/node/nodeinfo.c,
ext/cached/ruby-1.9.3/internal/node/nodeinfo.c

Overview

Represents a block of code (a succession of multiple expressions). A single block node can hold two expressions: one expression to be evaluated and second expression, which may be another BLOCK. The first node in the block may be of type ARGS, in which case it represents the arguments to the current method. The second node in the block may be of type BLOCK_ARG, in which case it represents an explicit block argument. The result of the block is the last expression evaluated.

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Node

#[], #_dump, _load, #address, #as_code, #as_expression, #as_paren_expression, #bytecode_compile, compile_string, define_code, define_expression, #eval, #flags, #inspect, #members, #nd_file, #nd_line, #nd_type, #obfusc, #pretty_print, #swap, #tree, type

Class Method Details

.members ⇒ Array

Return an array of strings containing the names of the node class’s members.

Returns:

  • (Array) 


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# File 'ext/internal/node/nodeinfo.c', line 2793

VALUE node_s_members(VALUE klass)
{
  return rb_iv_get(klass, "__member__");
}

Instance Method Details

#as_expression_impl(node) ⇒ Object 



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# File 'lib/internal/node/as_expression.rb', line 134

def as_expression_impl(node)
  a = node.to_a
  if a.size == 1 then
    return 'nil'
  end
  d = a[0]
  while d.class == Node::DASGN_CURR do
    d = d.value
  end
  a.shift if not d
  expressions = a.map { |n| n.as_expression }
  expressions.reject! { |e| e.nil? }
  if expressions.nitems == 0 then
    return 'nil'
  else
    return expressions.join('; ')
  end
end

#head ⇒ Object

Return the Node’s head member. The return type is either a Node or an Object.



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# File 'ext/internal/node/nodeinfo.c', line 2335

static VALUE node_head(VALUE self)
{
  NODE * n;
  Data_Get_Struct(self, NODE, n);

  if(TYPE(n->nd_head) == T_NODE)
  {
    if(0 && nd_type(n) == NODE_OP_ASGN2)
    {
      return wrap_node_as(
        (NODE *)n->nd_head,
        rb_cNodeSubclass[NODE_OP_ASGN2_ARG]);
    }
    else
    {
      return wrap_node((NODE *)n->nd_head);
    }
  }
  else
  {
    return (VALUE)n->nd_head;
  }
}

#next ⇒ Object

Return the Node’s next member. The return type is either a Node or an Object.



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# File 'ext/internal/node/nodeinfo.c', line 2437

static VALUE node_next(VALUE self)
{
  NODE * n;
  Data_Get_Struct(self, NODE, n);

  if(TYPE(n->nd_next) == T_NODE)
  {
    if(1 && nd_type(n) == NODE_OP_ASGN2)
    {
      return wrap_node_as(
        (NODE *)n->nd_next,
        rb_cNodeSubclass[NODE_OP_ASGN2_ARG]);
    }
    else
    {
      return wrap_node((NODE *)n->nd_next);
    }
  }
  else
  {
    return (VALUE)n->nd_next;
  }
}

#to_a ⇒ Object 



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# File 'lib/internal/node/to_a.rb', line 22

def to_a
  a = []
  e = self
  while e do
    a << e.head
    e = e.next
  end
  a
end