CUP is a system for generating LALR parsers from simple specifications. It serves the same role as the widely used program YACC [1] and in fact offers most of the features of YACC. However, CUP is written in Java, uses specifications including embedded Java code, and produces parsers which are implemented in Java.

CUP stands for Construction of Useful Parsers and is an LALR parser generator for Java. It was developed by C. Scott Ananian, Frank Flannery, Dan Wang, Andrew W. Appel and Michael Petter. It implements standard LALR (1) parser generation.

May 15, 2020 · I am trying to identify errors in a Python program using CUP. I stated the terminals to be the individual tokens in a Python program, and the non-terminals to be combinations of these tokens. I am getting an error that says:

I am using CUP with JFlex to validate expression syntax. I have the basic functionality working: I can tell if an expression is valid or not. Next step is to implement simple arithmetic operations, such as "add 1". For example, if my expression is "1 + a", the result should be "2 + a".

Apr 26, 2019 · Creamos un paquete llamado Cup dentro del paquete analizadores, este almacenará la herramienta Cup (Clic derecho en el paquete analizadores → New → Java Package). En la carpeta del paquete Cup copiamos el archivo “java-cup-11b-runtime.jar” que descargamos de la página oficial de Cup.

CUP Grammar for the Java Programming language, versions 1.0 through 1.5. (compressed tar) (ZIP archive) UPDATED: Grammar extended to handle latest version of the Java 1.5 specification with wildcard parameterizations and JSR-201 constructs (up-to-date with prototype 2.2 of JSR-14 + JSR-201 features). [28-Jul-2003].

Java CUP is a parser- generation tool, similar to Yacc. CUP builds a Java parser for LALR(1) grammars from production rules and associated Java code fragments. When a particular production is recognized, its associated code fragment is executed (typically to build an AST). CUP generates a Java source file parser.java.

I'm trying to build a compiler for a Pascal like language, and trying to decide between Ply(python) or a combination of Jflex+Cup(Java). I can't find any proper materials in order to evaluate which one is better.

Using Java CUP involves creating a simple specifications based on the grammar for which a parser is needed, along with construction of a scanner capable of breaking characters up into meaningful tokens (such as keywords, numbers, and special symbols). As a simple example, consider a system for evaluating simple arithmetic expressions over integers.

CUP is a system for generating LALR parsers from simple specifications. It serves the same role as the widely used program YACC [1] and in fact offers most of the features of YACC. However, CUP is written in Java, uses specifications including embedded Java code, and produces parsers which are implemented in Java.