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After successfully building a lexer and parser that convert source code into an abstract syntax tree (AST), the next critical step is to evaluate expressions. This phase brings the AST to life by computing actual values from syntactic structures. The Role of the Visitor Pattern To evaluate different node types—such as binary operations, literal ...

Execution Engine Overview The execution engine constitutes one of the core components of the Java Virtual Machine. Unlike physical machines whose execution engines are built directly upon processors, caches, instruction sets, and operating systems, JVM execution engines are software-based implementations. This design enables customization of in ...