Class: CodeTools::AST::Parameters
- Defined in:
- lib/rubinius/code/ast/definitions.rb
Instance Attribute Summary collapse
-
#block_arg ⇒ Object
Returns the value of attribute block_arg.
-
#block_index ⇒ Object
readonly
Returns the value of attribute block_index.
-
#defaults ⇒ Object
Returns the value of attribute defaults.
-
#keywords ⇒ Object
Returns the value of attribute keywords.
-
#kwrest ⇒ Object
Returns the value of attribute kwrest.
-
#kwrest_index ⇒ Object
readonly
Returns the value of attribute kwrest_index.
-
#names ⇒ Object
Returns the value of attribute names.
-
#optional ⇒ Object
Returns the value of attribute optional.
-
#post ⇒ Object
Returns the value of attribute post.
-
#required ⇒ Object
Returns the value of attribute required.
-
#splat ⇒ Object
Returns the value of attribute splat.
Attributes inherited from Node
Instance Method Summary collapse
- #arity ⇒ Object
- #bytecode(g) ⇒ Object
-
#initialize(line, required = nil, optional = nil, splat = nil, post = nil, kwargs = nil, kwrest = nil, block = nil) ⇒ Parameters
constructor
A new instance of Parameters.
- #local_placeholder ⇒ Object
- #map_arguments(scope) ⇒ Object
- #post_args ⇒ Object
- #process_fixed_arguments(array, arguments, names) ⇒ Object
- #required_args ⇒ Object
- #splat_index ⇒ Object
- #to_sexp ⇒ Object
- #total_args ⇒ Object
Methods inherited from Node
#ascii_graph, #attributes, #children, #defined, match_arguments?, match_send?, #new_block_generator, #new_generator, #node_name, #or_bytecode, #pos, #set_child, #transform, transform, transform_comment, transform_kind, transform_kind=, transform_name, #value_defined, #visit, #walk
Constructor Details
#initialize(line, required = nil, optional = nil, splat = nil, post = nil, kwargs = nil, kwrest = nil, block = nil) ⇒ Parameters
Returns a new instance of Parameters.
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# File 'lib/rubinius/code/ast/definitions.rb', line 307 def initialize(line, required=nil, optional=nil, splat=nil, post=nil, kwargs=nil, kwrest=nil, block=nil) @line = line @defaults = nil @keywords = nil @block_arg = nil @splat_index = nil @block_index = nil @kwrest_index = nil @locals = [] @local_index = 0 names = [] process_fixed_arguments Array(required), @required = [], names if optional @defaults = DefaultArguments.new line, optional @optional = @defaults.names names.concat @optional @locals.concat @defaults.arguments else @optional = [] end case splat when Symbol names << splat @locals << splat when true splat = :* @locals << splat when false splat = nil @splat_index = -3 end @splat = splat process_fixed_arguments post, @post = [], names if kwargs || kwrest placeholder_var = local_placeholder @locals << placeholder_var end kwrest = placeholder_var if kwrest == true if kwargs @keywords = KeywordParameters.new line, kwargs, kwrest names.concat @keywords.names elsif kwrest @keywords = KeywordParameters.new line, nil, kwrest end @keywords.value = LocalVariableAccess.new line, placeholder_var if @keywords if kwrest @kwrest_index = total_args + @keywords.arguments.length + 1 @kwrest_index += 1 if block end @names = names self.block_arg = block end |
Instance Attribute Details
#block_arg ⇒ Object
Returns the value of attribute block_arg.
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# File 'lib/rubinius/code/ast/definitions.rb', line 305 def block_arg @block_arg end |
#block_index ⇒ Object (readonly)
Returns the value of attribute block_index.
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# File 'lib/rubinius/code/ast/definitions.rb', line 305 def block_index @block_index end |
#defaults ⇒ Object
Returns the value of attribute defaults.
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# File 'lib/rubinius/code/ast/definitions.rb', line 303 def defaults @defaults end |
#keywords ⇒ Object
Returns the value of attribute keywords.
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# File 'lib/rubinius/code/ast/definitions.rb', line 303 def keywords @keywords end |
#kwrest ⇒ Object
Returns the value of attribute kwrest.
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# File 'lib/rubinius/code/ast/definitions.rb', line 303 def kwrest @kwrest end |
#kwrest_index ⇒ Object (readonly)
Returns the value of attribute kwrest_index.
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# File 'lib/rubinius/code/ast/definitions.rb', line 305 def kwrest_index @kwrest_index end |
#names ⇒ Object
Returns the value of attribute names.
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# File 'lib/rubinius/code/ast/definitions.rb', line 303 def names @names end |
#optional ⇒ Object
Returns the value of attribute optional.
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# File 'lib/rubinius/code/ast/definitions.rb', line 303 def optional @optional end |
#post ⇒ Object
Returns the value of attribute post.
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# File 'lib/rubinius/code/ast/definitions.rb', line 303 def post @post end |
#required ⇒ Object
Returns the value of attribute required.
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# File 'lib/rubinius/code/ast/definitions.rb', line 303 def required @required end |
#splat ⇒ Object
Returns the value of attribute splat.
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# File 'lib/rubinius/code/ast/definitions.rb', line 303 def splat @splat end |
Instance Method Details
#arity ⇒ Object
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# File 'lib/rubinius/code/ast/definitions.rb', line 440 def arity arity = required_args if @keywords and @keywords.required? arity += 1 end if @splat or not @optional.empty? or (@keywords and not @keywords.required?) arity = -arity - 1 end arity end |
#bytecode(g) ⇒ Object
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# File 'lib/rubinius/code/ast/definitions.rb', line 472 def bytecode(g) g.state.check_for_locals = false map_arguments g.state.scope @required.each_with_index do |arg, index| if arg.kind_of? MultipleAssignment g.push_local index arg.bytecode(g) g.pop end end @defaults.bytecode(g) if @defaults index = @required.size + @optional.size index += 1 if @splat_index @post.each do |arg| if arg.kind_of? MultipleAssignment g.push_local index index += 1 arg.bytecode(g) g.pop end end @keywords.bytecode(g) if @keywords @block_arg.bytecode(g) if @block_arg g.state.check_for_locals = true end |
#local_placeholder ⇒ Object
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# File 'lib/rubinius/code/ast/definitions.rb', line 398 def local_placeholder :"_:#{@local_index += 1}" end |
#map_arguments(scope) ⇒ Object
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# File 'lib/rubinius/code/ast/definitions.rb', line 455 def map_arguments(scope) @locals.map do |v| case v when Symbol scope.new_local v when MultipleAssignment scope.assign_local_reference v.right when LocalVariable scope.assign_local_reference v when nil STDERR.puts @locals.inspect, self.inspect end end @keywords.map_arguments(scope) if @keywords end |
#post_args ⇒ Object
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# File 'lib/rubinius/code/ast/definitions.rb', line 424 def post_args @post.size end |
#process_fixed_arguments(array, arguments, names) ⇒ Object
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# File 'lib/rubinius/code/ast/definitions.rb', line 374 def process_fixed_arguments(array, arguments, names) if array array.each do |arg| case arg when :_ var = names.include?(:_) ? local_placeholder : arg names << arg when Symbol var = arg names << arg when MultipleAssignment var = arg var.right = LocalVariableAccess.new line, local_placeholder when VariableAssignment var = arg names << var.name end arguments << var @locals << var end end end |
#required_args ⇒ Object
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# File 'lib/rubinius/code/ast/definitions.rb', line 420 def required_args @required.size + @post.size end |
#splat_index ⇒ Object
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# File 'lib/rubinius/code/ast/definitions.rb', line 434 def splat_index return @splat_index if @splat_index return @required.size + @optional.size if @splat end |
#to_sexp ⇒ Object
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# File 'lib/rubinius/code/ast/definitions.rb', line 505 def to_sexp sexp = [:args] @required.each do |a| case a when Symbol sexp << a when Node sexp << a.to_sexp end end sexp += @defaults.names if @defaults if @splat == :* sexp << :* elsif @splat sexp << :"*#{@splat}" end if @post @post.each do |a| case a when Symbol sexp << a when Node sexp << a.to_sexp end end end sexp += @keywords.names if @keywords sexp << :"&#{@block_arg.name}" if @block_arg sexp << [:block] + @defaults.to_sexp if @defaults sexp << @keywords.to_sexp if @keywords sexp end |
#total_args ⇒ Object
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# File 'lib/rubinius/code/ast/definitions.rb', line 428 def total_args args = @required.size + @optional.size + @post.size args += 1 if @keywords args end |