Class: Keisan::AST::Indexing
Constant Summary
Constants inherited
from Operator
Operator::ARITIES, Operator::ARITY_PRIORITY_ASSOCIATIVITY, Operator::ASSOCIATIVITIES, Operator::ASSOCIATIVITY_OF_PRIORITY, Operator::PRIORITIES
Instance Attribute Summary collapse
Attributes inherited from Parent
#children
Instance Method Summary
collapse
arity, associativity, #child, priority
Methods inherited from Operator
arity, #arity, associativity, #associativity, associativity_of_priority, #blank_value, #priority, priority, #symbol, symbol
Methods inherited from Parent
#==, #is_constant?, #traverse, #unbound_functions, #unbound_variables
Methods inherited from Node
#!, #%, #&, #*, #**, #+, #+@, #-, #-@, #/, #<, #<<, #<=, #>, #>=, #>>, #^, #and, #coerce, #contains_a?, #differentiate, #differentiated, #equal, #evaluated, #false?, #is_constant?, #not_equal, #or, #replaced, #simplified, #to_cell, #to_node, #traverse, #true?, #unbound_functions, #unbound_variables, #well_defined?, #|, #~
Constructor Details
#initialize(child, indexes = []) ⇒ Indexing
Returns a new instance of Indexing.
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# File 'lib/keisan/ast/indexing.rb', line 6
def initialize(child, indexes = [])
@children = [child]
@indexes = indexes
end
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Instance Attribute Details
#indexes ⇒ Object
Returns the value of attribute indexes.
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# File 'lib/keisan/ast/indexing.rb', line 4
def indexes
@indexes
end
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Instance Method Details
#deep_dup ⇒ Object
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# File 'lib/keisan/ast/indexing.rb', line 11
def deep_dup
dupped = super
dupped.instance_variable_set(
:@indexes, indexes.map(&:deep_dup)
)
dupped
end
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#evaluate(context = nil) ⇒ Object
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# File 'lib/keisan/ast/indexing.rb', line 36
def evaluate(context = nil)
context ||= Context.new
@children = children.map {|child| child.evaluate(context)}
@indexes = indexes.map {|index| index.evaluate(context)}
evaluate_list(context) || evaluate_hash(context) || self
end
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#evaluate_assignments(context = nil) ⇒ Object
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# File 'lib/keisan/ast/indexing.rb', line 32
def evaluate_assignments(context = nil)
self
end
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#freeze ⇒ Object
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# File 'lib/keisan/ast/indexing.rb', line 19
def freeze
indexes.each(&:freeze)
super
end
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#replace(variable, replacement) ⇒ Object
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# File 'lib/keisan/ast/indexing.rb', line 48
def replace(variable, replacement)
super
@indexes = indexes.map {|index| index.replace(variable, replacement)}
end
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#simplify(context = nil) ⇒ Object
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# File 'lib/keisan/ast/indexing.rb', line 44
def simplify(context = nil)
evaluate(context)
end
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#to_s ⇒ Object
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# File 'lib/keisan/ast/indexing.rb', line 28
def to_s
"(#{child.to_s})[#{indexes.map(&:to_s).join(',')}]"
end
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#value(context = nil) ⇒ Object
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# File 'lib/keisan/ast/indexing.rb', line 24
def value(context = nil)
return child.value(context).send(:[], *indexes.map {|index| index.value(context)})
end
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