Class: Node::OP_ASGN1

Inherits:

Node

• Object
• Node
• Node::OP_ASGN1

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 bracket assignment of the form:

recv[index] += value or
recv[index] ||= value or
recv[index] &&= value.

The index is obtained from args.body.

The value is obtained from args.head.

In the case of ||=, mid will be 0. The rhs will be equal to the result of evaluating args.head if the lhs is false, otherwise the rhs will be equal to lhs.

In the case of &&=, mid will be 1. The rhs will be equal to the lhs if lhs is false, otherwise the rhs will be equal to the result of evaluating args.head. In all other cases, mid will be the name of the method to call to calculate value, such that the expression is equivalent to:

recv[args.body] = recv[args.body].mid(args.head)

In no case does ruby short-circuit the assignment.

Class Method Summary

• .members ⇒ Array

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

Instance Method Summary

• #args ⇒ Object

  Return the Node’s args member.

• #mid ⇒ Object

  Return the Node’s mid member.

• #recv ⇒ Object

  Return the Node’s recv 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

#args ⇒ Object

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

# File 'ext/internal/node/nodeinfo.c', line 2022

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

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

#mid ⇒ Object

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

# File 'ext/internal/node/nodeinfo.c', line 2416

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

#recv ⇒ Object

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

# File 'ext/internal/node/nodeinfo.c', line 2511

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

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