Class: RDL::Typecheck::ASTMapper

Inherits:
AST::Processor
  • Object
show all
Defined in:
lib/rdl/typecheck.rb

Overview

Create mapping from file/line numbers to the def that appears at that location

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(file) ⇒ ASTMapper

Returns a new instance of ASTMapper.



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# File 'lib/rdl/typecheck.rb', line 12

def initialize(file)
  @file = file
  @line_defs = Hash.new # map from line numbers to defs
end

Instance Attribute Details

#line_defs ⇒ Object

Returns the value of attribute line_defs.



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# File 'lib/rdl/typecheck.rb', line 10

def line_defs
  @line_defs
end

Instance Method Details

#handler_missing(node) ⇒ Object 



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# File 'lib/rdl/typecheck.rb', line 17

def handler_missing(node)
  node.children.each { |n| process n if n.is_a?(AST::Node) }
end

#on_def(node) ⇒ Object 



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# File 'lib/rdl/typecheck.rb', line 21

def on_def(node)
  # (def name args body)
  name, _, body = *node
  if @line_defs[node.loc.line]
    raise RuntimeError, "Multiple defs per line (#{name} and #{@line_defs[node.loc.line].children[1]} in #{@file}) currently not allowed"
  end
  @line_defs[node.loc.line] = node
  process body
  node.updated(nil, nil)
end

#on_defs(node) ⇒ Object 



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# File 'lib/rdl/typecheck.rb', line 32

def on_defs(node)
  # (defs (self) name args body)
  _, name, _, body = *node
  if @line_defs[node.loc.line]
    raise RuntimeError, "Multiple defs per line (#{name} and #{@line_defs[node.loc.line].children[1]} in #{@file}) currently not allowed"
  end
  @line_defs[node.loc.line] = node
  process body
  node.updated(nil, nil)
end