Class: Node::SCOPE

Inherits:

Node

• Object
• Node
• Node::SCOPE

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 a lexical scope.

A new scope is created when a method is invoked. The scope node holds information about local variables and arguments to the method. The first two variables in the local variable table are the implicit variables $_ and $~.

The next variables listed in the local variable table are the arguments to the method. More information about the arguments to the method are stored in the ARGS node, which will either be the first node in the scope or the first node in the BLOCK held by the scope.

Class Method Summary

• .members ⇒ Array

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

Instance Method Summary

• #next ⇒ Object

  Return the Node’s next member.

• #rval ⇒ Object

  Return the Node’s rval member.

• #tbl ⇒ Object

  Return the Node’s tbl member.

Methods inherited from Node

#[], #_dump, _load, #address, #bytecode_compile, compile_string, #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

#next ⇒ Object

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

# 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;
  }
}

#rval ⇒ Object

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

# File 'ext/internal/node/nodeinfo.c', line 2586

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

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

#tbl ⇒ Object

Return the Node’s tbl member. The return value is an Array holding names of variables.

# File 'ext/internal/node/nodeinfo.c', line 2677

static VALUE node_tbl(VALUE self)
{
  NODE * n;
  Data_Get_Struct(self, NODE, n);
  return variable_names(n->nd_tbl);
}