CUP Parser Generator (Community Fork)

An independent, community-maintained fork of the original CUP (Construction of Useful Parsers) parser generator for Java.

🚀 Key Improvements

• Modern Gradle build system (replaces legacy Ant)
• Automatic AST generation via the -ast flag (e.g., Node%s)
• Extended BNF syntax and cleaner grammar support
• Reduced legacy code: Removed XML output and other unused features
• Integrated tests: Includes MiniJava and calculator examples with automated validation

🛠️ Build & Use

Prerequisites: JDK 11+, Gradle (or use wrapper)

# Generate parser and lexer sources
./gradlew generateCupParser generateJFlexLexer

# Build main and runtime JARs
./gradlew jar

# Output:
# - build/libs/java-cup-11b.jar          (main tool)
# - build/libs/java-cup-11b-runtime.jar  (runtime library for generated parsers)