Lolisa: Formal Syntax and Semantics for a Subset of the Solidity Programming Language in Mathematical Tool Coq

Table 1

Helper functions.

Symbol	Definition	Symbol	Definition
	Searches the indexed address of a mapping type		Obtains the value in a mapping type term
	Evaluates binary operation expressions		Evaluates unary operation expressions
	Searches the required struct member		Validates the current environment
	Changes the current environment		Validates the inheritance information
	Initializes the variable address		Initializes the function return address