Expression

A compute program expression


Expression is used as input in the following functions:

"for" statement with target: target and iterable iterable
trio (first, second, third)
expression object[key]
expression elem in object
type of expression

Expression is used as output in the following functions:

the expression at time s
obj.method_name(args)
object.attribute
object.attribute = value
program context with variables: vars and expression state: expr_state and control map: in_block
program context where Local Variables Map: variables, Expression Stack: expr_stack, Values Stack: values_stack, Line: line, Tab: tab, and Control Map: control_map
trio (first, second, third)
expression left + right
expression left - right
expression left * right
expression object[key]
expression elem in object

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