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These include the types of variables, constants, operators, etc. Attributesare extra pieces of information computed by the semantic analyzer.The process of ensuring that the type(s) of the operand(s) are appropriate for an operation.Determine the number and types of parameters of a procedure.Determine the structure and attributes of a user-defined data type.Static semanticscan be determined by the compiler prior to execution, including.Enforcing the scope rules of the language.Ensuring an identifier is defined before being used in a statement or expression.The semantic analyzer’s job is to attach some meaning to the structure produced by the parser.Normally semantic information cannot be represented by a context-free language used in syntax analyzers.Type-checking is an important part of semantic analyzer. Dag examples in compiler design code#
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