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Un enfoque práctico usando Python
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About the Book
Este libro muestra paso a paso todo los procesos que se involucran a la hora de desarrollar un intérprete para un lenguaje nuevo o existente; en nuestro caso FoxLite es un lenguaje de programación subconjunto de Visual FoxPro que a pesar de poseer una gramática limitada, será capaz de mostrarnos todo el camino que debemos recorrer para elaborar a mano un lenguaje de programación:
1. Análisis Léxico: es la fase que se encarga de recibir el código del lenguaje en formato texto e iniciar la formación de lexemas para finalmente formar un token por cada unidad relacionada. También se le conoce como Scanner o Tokenizer.
2. Análisis Sintáctico: es la fase que se encarga de validar la sintaxis del lenguaje fuente y al mismo tiempo generar una representación intermedia o en memoria de la semántica del lenguaje, a este tipo de estructura se le conoce como Árbol de Sintaxis Abstracta.
3. Evaluador: es la fase del intérprete que se se encarga de recorrer el Árbol de Sintaxis Abstracta y al mismo tiempo de ejecutar el código o las instrucciones contenidas en todos los nodos del AST. A este tipo de intérpretes se les conoce como Tree Walker Interpreter porque recorren el AST desde el nodo raíz hasta el final.
About the Author
Soy programador de profesión y me gusta todo lo relacionado con Compiladores, Intérpretes, Procesadores de Texto, Procesadores de Lenguaje Natural, Inteligencia Artificial y Analizadores de Texto. También meto mi nariz en el desarrollo de videojuegos y sus motores.
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