Class: SyntaxTree::YARV::SetLocalWC1
Overview
### Summary
‘setlocal_WC_1` is a specialized version of the `setlocal` instruction. It sets the value of a local variable on the parent frame to the value at the top of the stack as determined by the index given as its only argument.
### Usage
~~~ruby value = 5 self.then { value = 10 } ~~~
Instance Attribute Summary collapse
Instance Method Summary
collapse
Methods inherited from Instruction
#branch_targets, #falls_through?, #leaves?, #pushes, #side_effects?
Constructor Details
Returns a new instance of SetLocalWC1.
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# File 'lib/syntax_tree/yarv/instructions.rb', line 5266
def initialize(index)
@index = index
end
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Instance Attribute Details
#index ⇒ Object
Returns the value of attribute index.
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# File 'lib/syntax_tree/yarv/instructions.rb', line 5264
def index
@index
end
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Instance Method Details
#==(other) ⇒ Object
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# File 'lib/syntax_tree/yarv/instructions.rb', line 5282
def ==(other)
other.is_a?(SetLocalWC1) && other.index == index
end
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#call(vm) ⇒ Object
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# File 'lib/syntax_tree/yarv/instructions.rb', line 5298
def call(vm)
canonical.call(vm)
end
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#canonical ⇒ Object
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# File 'lib/syntax_tree/yarv/instructions.rb', line 5294
def canonical
SetLocal.new(index, 1)
end
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#deconstruct_keys(_keys) ⇒ Object
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# File 'lib/syntax_tree/yarv/instructions.rb', line 5278
def deconstruct_keys(_keys)
{ index: index }
end
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#disasm(fmt) ⇒ Object
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# File 'lib/syntax_tree/yarv/instructions.rb', line 5270
def disasm(fmt)
fmt.instruction("setlocal_WC_1", [fmt.local(index, implicit: 1)])
end
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#length ⇒ Object
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# File 'lib/syntax_tree/yarv/instructions.rb', line 5286
def length
2
end
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#pops ⇒ Object
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# File 'lib/syntax_tree/yarv/instructions.rb', line 5290
def pops
1
end
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#to_a(iseq) ⇒ Object
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# File 'lib/syntax_tree/yarv/instructions.rb', line 5274
def to_a(iseq)
[:setlocal_WC_1, iseq.parent_iseq.local_table.offset(index)]
end
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