UTDLang Compiler Project

This repository contains a small compiler front-end for the UTD language. It implements the typical compiler phases needed for parsing and semantic analysis: a lexer (JFlex), a parser (CUP), AST node definitions, scoped symbol tables, and a type-checking/semantic analysis pass. The project includes a set of test programs and expected outputs to exercise the type checker.

Key components

• tokens.jflex — lexer specification (JFlex)
• grammar.cup — parser grammar (CUP)
• Lexer.java, parser.java, sym.java — generated lexer/parser scaffolding
• AstNodes.java — AST classes and node utilities
• SemanticContext.java, SymbolTable.java, TypeInfo.java, SemanticException.java — semantic analysis and type system
• TypeCheckingTest.java, LexerTest.java, ScannerTest.java — test drivers

Build & usage

The project uses a Makefile to regenerate lexer/parser sources and to compile/run tests. You will need a Java JDK and the JFlex/CUP jars referenced by the build.

Common targets:

make all   # generate sources and compile
make run   # run the default type-checker driver

Tests

• Test inputs are in p3tests/p3tests/.
• Expected outputs are in p3tests-results/.

This README provides a high-level overview. See the source files and the Makefile for build details and specific commands.