Class: Carbon::Compiler::Visitor::Generation::Context

Inherits:
Object
  • Object
show all
Defined in:
lib/carbon/compiler/visitor/generation/context.rb

Overview

Context for building function bodies.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(definition, index, function) ⇒ Context

Returns a new instance of Context.



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# File 'lib/carbon/compiler/visitor/generation/context.rb', line 13

def initialize(definition, index, function)
  @locals = []
  @definition = definition
  @index = index
  @function = function
end

Instance Attribute Details

#function ⇒ Object (readonly)

Returns the value of attribute function.



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# File 'lib/carbon/compiler/visitor/generation/context.rb', line 11

def function
  @function
end

#index ⇒ Object (readonly)

Returns the value of attribute index.



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# File 'lib/carbon/compiler/visitor/generation/context.rb', line 10

def index
  @index
end

Instance Method Details

#[](name) ⇒ Object 



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# File 'lib/carbon/compiler/visitor/generation/context.rb', line 48

def [](name)
  current[name]
end

#[]=(name, value) ⇒ Object 



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# File 'lib/carbon/compiler/visitor/generation/context.rb', line 52

def []=(name, value)
  top[name] = value
end

#block ⇒ Object 



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# File 'lib/carbon/compiler/visitor/generation/context.rb', line 20

def block
  @block ||= @definition.add("entry")
end

#build(*p) ⇒ Object 



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# File 'lib/carbon/compiler/visitor/generation/context.rb', line 28

def build(*p)
  return block.build(*p) unless block_given?
  result = nil
  block.build(*p) { |*a| result = yield(*a) }
  result
end

#current ⇒ Object 



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# File 'lib/carbon/compiler/visitor/generation/context.rb', line 56

def current
  @locals.inject({}, :merge)
end

#find(name) ⇒ Object 



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# File 'lib/carbon/compiler/visitor/generation/context.rb', line 40

def find(name)
  index.fetch(name)
end

#key?(name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/carbon/compiler/visitor/generation/context.rb', line 44

def key?(name)
  current.key?(name)
end

#new(name = "") ⇒ Object 



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# File 'lib/carbon/compiler/visitor/generation/context.rb', line 24

def new(name = "")
  @definition.add(name)
end

#pop ⇒ Object 



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# File 'lib/carbon/compiler/visitor/generation/context.rb', line 64

def pop
  @locals.pop
end

#push ⇒ Object 



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# File 'lib/carbon/compiler/visitor/generation/context.rb', line 60

def push
  @locals << {}
end

#swap(other) ⇒ Object 



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# File 'lib/carbon/compiler/visitor/generation/context.rb', line 35

def swap(other)
  old, @block = @block, other
  old
end

#top ⇒ Object 



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# File 'lib/carbon/compiler/visitor/generation/context.rb', line 68

def top
  @locals.last
end