Class: Opal::Nodes::TopNode
Overview
Generates code for an entire file, i.e. the base sexp
Instance Attribute Summary
Attributes inherited from ScopeNode
#await_encountered, #block_name, #catch_return, #defs, #gvars, #has_break, #has_retry, #identity, #ivars, #locals, #methods, #mid, #name, #parent, #rescue_else_sexp, #scope_name
Attributes inherited from Base
#compiler, #sexp, #type
#closure
Instance Method Summary
collapse
Methods inherited from ScopeNode
#accepts_using?, #add_arg, #add_proto_ivar, #add_scope_gvar, #add_scope_ivar, #add_scope_local, #add_scope_temp, #class?, #class_scope?, #collect_refinements_temps, #current_rescue, #def?, #def_in_class?, #defines_lambda, #find_parent_def, #gen_retry_id, #has_local?, #has_rescue_else?, #has_temp?, #identify!, #in_ensure, #in_ensure?, #in_resbody, #in_resbody?, #in_rescue, #in_scope, #in_while?, #initialize, #is_lambda!, #iter?, #lambda?, #lambda_definition?, #module?, #nesting, #new_refinements_temp, #new_temp, #next_temp, #pop_while, #prepare_block, #prepend_scope_temp, #push_while, #queue_temp, #refinements_temp, #relative_access, #sclass?, #scope_locals, #self, #super_chain, #to_vars, #top?, #uses_block!, #uses_block?
Methods inherited from Base
#add_gvar, #add_ivar, #add_local, #add_temp, #children, children, #class_variable_owner, #class_variable_owner_nesting_level, #comments, #compile_to_fragments, #error, #expr, #expr?, #expr_or_empty, #expr_or_nil, #fragment, handle, handlers, #has_rescue_else?, #helper, #in_ensure, #in_ensure?, #in_resbody, #in_resbody?, #in_rescue, #in_while?, #initialize, #process, #push, #recv, #recv?, #s, #scope, #source_location, #stmt, #stmt?, #top_scope, truthy_optimize?, #unshift, #while_loop, #with_temp, #wrap
#closure_is?, #compile_catcher, #generate_thrower, #generate_thrower_without_catcher, #in_closure, #pop_closure, #push_closure, #select_closure, #thrower
Methods included from Helpers
#current_indent, #empty_line, #indent, #js_truthy, #js_truthy_optimize, #line, #mid_to_jsid, #property, #valid_name?
Instance Method Details
#absolute_const ⇒ Object
Returns '$$$', but also ensures that the '$$$' variable is set
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# File 'opal/lib/opal/nodes/top.rb', line 117
def absolute_const
@define_absolute_const = true
'$$$'
end
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#add_file_source_embed ⇒ Object
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# File 'opal/lib/opal/nodes/top.rb', line 152
def add_file_source_embed
filename = compiler.file
source = compiler.source
unshift "Opal.file_sources[#{filename.to_json}] = #{source.to_json};\n"
end
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#add_used_helpers ⇒ Object
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# File 'opal/lib/opal/nodes/top.rb', line 128
def add_used_helpers
compiler.helpers.to_a.reverse_each { |h| prepend_scope_temp "$#{h} = Opal.#{h}" }
end
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#closing ⇒ Object
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# File 'opal/lib/opal/nodes/top.rb', line 94
def closing
if compiler.requirable?
line "};\n"
if compiler.load?
line "Opal.load_normalized(#{module_name});"
end
elsif compiler.eval?
line "})(Opal, self);"
else
line "});\n"
end
end
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#compile ⇒ Object
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# File 'opal/lib/opal/nodes/top.rb', line 16
def compile
compiler.top_scope = self
compiler.dynamic_cache_result = true if sexp.meta[:dynamic_cache_result]
push
helper :return_val if compiler.eof_content
if body == s(:nil)
if compiler.requirable? || compiler.esm? || compiler.eval?
unshift 'Opal.return_val(Opal.nil); '
definition
else
unshift 'Opal.nil; '
end
else
in_scope do
line '"use strict";' if compiler.use_strict?
body_code = in_closure(Closure::JS_FUNCTION | Closure::TOP) do
stmt(stmts)
end
body_code = [body_code] unless body_code.is_a?(Array)
if compiler.eval?
add_temp '$nesting = self.$$is_a_module ? [self] : [self.$$class]' if @define_nesting
else
add_temp 'self = Opal.top' if @define_self
add_temp '$nesting = []' if @define_nesting
end
add_temp '$$ = Opal.$r($nesting)' if @define_relative_access
add_temp 'nil = Opal.nil'
add_temp '$$$ = Opal.$$$' if @define_absolute_const
add_used_helpers
line scope.to_vars
compile_method_stubs
compile_irb_vars
compile_end_construct
line body_code
end
opening
definition
closing
end
add_file_source_embed if compiler.enable_file_source_embed?
end
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#compile_end_construct ⇒ Object
Any special END content in code
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# File 'opal/lib/opal/nodes/top.rb', line 141
def compile_end_construct
if content = compiler.eof_content
line 'var $__END__ = Opal.Object.$new();'
line "$__END__.$read = $return_val(#{content.inspect});"
end
end
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#compile_irb_vars ⇒ Object
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# File 'opal/lib/opal/nodes/top.rb', line 122
def compile_irb_vars
if compiler.irb?
line 'if (!Opal.irb_vars) { Opal.irb_vars = {}; }'
end
end
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#compile_method_stubs ⇒ Object
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# File 'opal/lib/opal/nodes/top.rb', line 132
def compile_method_stubs
if compiler.method_missing?
calls = compiler.method_calls
stubs = calls.to_a.map(&:to_s).join(',')
line "Opal.add_stubs('#{stubs}');" unless stubs.empty?
end
end
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#definition ⇒ Object
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# File 'opal/lib/opal/nodes/top.rb', line 74
def definition
if compiler.requirable?
unshift "Opal.modules[#{module_name}] = "
elsif compiler.esm? && !compiler.no_export?
unshift 'export default '
end
end
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#module_name ⇒ Object
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# File 'opal/lib/opal/nodes/top.rb', line 70
def module_name
Opal::Compiler.module_name(compiler.file).inspect
end
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#opening ⇒ Object
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# File 'opal/lib/opal/nodes/top.rb', line 82
def opening
async_prefix = "async " if await_encountered
if compiler.requirable?
unshift "#{async_prefix}function(Opal) {"
elsif compiler.eval?
unshift "(#{async_prefix}function(Opal, self) {"
else
unshift "Opal.queue(#{async_prefix}function(Opal) {"
end
end
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#stmts ⇒ Object
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# File 'opal/lib/opal/nodes/top.rb', line 112
def stmts
compiler.returns(body)
end
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# File 'opal/lib/opal/nodes/top.rb', line 148
def
"/* Generated by Opal #{Opal::VERSION} */"
end
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