Class: Node::DASGN

Inherits:

Node

• Object
• Node
• Node::DASGN

Defined in:

ext/internal/node/nodeinfo.c,
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 dynamic local variable assignment. Dynamic assignment differs from static assignment in that the slots for static local variables are allocated when the method is called, wereas slots for dynamic variables are allocated when the variable is first assigned to. When searching for the variable, dynamic assignment searches backward up the stack to see if the variable exists in any previous block in the current frame; if it does, it assigns to the slot found in that block, otherwise it creates a new variable slot. As a result, dynamic assignment is typically much slower than static assignment.

Class Method Summary

• .members ⇒ Array

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

Instance Method Summary

• #value ⇒ Object

  Return the Node’s value member.

• #vid ⇒ Object

  Return the Node’s vid member.

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, #to_a, #tree, type

Class Method Details

.members ⇒ Array

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

Returns:

• (Array)

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

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

Instance Method Details

#value ⇒ Object

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

# File 'ext/internal/node/nodeinfo.c', line 2714

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

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

#vid ⇒ Object

Return the Node’s vid member. The return type is a Symbol.

# File 'ext/internal/node/nodeinfo.c', line 2768

static VALUE node_vid(VALUE self)
{
  NODE * n;
  Data_Get_Struct(self, NODE, n);
  if(n->nd_vid == 0)
  {
    return Qfalse;
  }
  else if(n->nd_vid == 1)
  {
    return Qtrue;
  }
  else
  {
    return ID2SYM(n->nd_vid);
  }
}