Class: Opal::Nodes::TopNode

Inherits:
ScopeNode show all
Defined in:
opal/lib/opal/nodes/top.rb

Overview

Generates code for an entire file, i.e. the base sexp

Constant Summary

Constants included from Helpers

Helpers::RESERVED

Instance Attribute Summary

Attributes inherited from ScopeNode

#block_name, #catch_return, #defs, #ivars, #methods, #mid, #name, #parent, #scope_name, #uses_super, #uses_zuper

Attributes inherited from Base

#compiler, #type

Instance Method Summary collapse

Methods inherited from ScopeNode

#add_arg, #add_proto_ivar, #add_scope_ivar, #add_scope_local, #add_scope_temp, #class?, #class_scope?, #def?, #def_in_class?, #find_parent_def, #get_super_chain, #has_local?, #has_temp?, #identify!, #identity, #in_scope, #in_while?, #initialize, #iter?, #module?, #new_temp, #next_temp, #pop_while, #proto, #push_while, #queue_temp, #sclass?, #should_donate?, #to_donate_methods, #to_vars, #top?, #uses_block!, #uses_block?

Methods inherited from Base

#add_ivar, #add_local, #add_temp, children, #children, #compile_to_fragments, #error, #expr, #expr?, #expr_or_nil, #fragment, handle, handlers, #helper, #in_while?, #initialize, #process, #push, #recv, #recv?, #s, #scope, #stmt, #stmt?, #unshift, #while_loop, #with_temp, #wrap

Methods included from Helpers

#current_indent, #empty_line, #indent, #js_falsy, #js_truthy, #js_truthy_optimize, #line, #lvar_to_js, #mid_to_jsid, #property, #reserved?, #variable

Constructor Details

This class inherits a constructor from Opal::Nodes::ScopeNode

Instance Method Details

#add_used_helpers ⇒ Object 



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# File 'opal/lib/opal/nodes/top.rb', line 47

def add_used_helpers
  helpers = compiler.helpers.to_a
  helpers.to_a.each { |h| add_temp "$#{h} = $opal.#{h}" }
end

#compile ⇒ Object 



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# File 'opal/lib/opal/nodes/top.rb', line 12

def compile
  push version_comment

  line "(function($opal) {"

  in_scope do
    body_code = stmt(stmts)
    body_code = [body_code] unless body_code.is_a?(Array)

    add_temp 'self = $opal.top'
    add_temp '$scope = $opal'
    add_temp 'nil = $opal.nil'

    add_used_helpers
    line scope.to_vars

    compile_method_stubs
    compile_irb_vars

    line body_code
  end

  line "})(Opal);\n"
end

#compile_irb_vars ⇒ Object 



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# File 'opal/lib/opal/nodes/top.rb', line 41

def compile_irb_vars
  if compiler.irb?
    line "if (!$opal.irb_vars) { $opal.irb_vars = {}; }"
  end
end

#compile_method_stubs ⇒ Object 



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# File 'opal/lib/opal/nodes/top.rb', line 52

def compile_method_stubs
  if compiler.method_missing?
    calls = compiler.method_calls
    stubs = calls.to_a.map { |k| "'$#{k}'" }.join(', ')
    line "$opal.add_stubs([#{stubs}]);"
  end
end

#stmts ⇒ Object 



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# File 'opal/lib/opal/nodes/top.rb', line 37

def stmts
  compiler.returns(body)
end

#version_comment ⇒ Object 



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# File 'opal/lib/opal/nodes/top.rb', line 60

def version_comment
  "/* Generated by Opal #{Opal::VERSION} */"
end