Toy2 Compiler

This project is a compiler for a custom programming language called Toy2.

✨ Language Features

• Variable declarations, with or without initialization
• Functions with multiple return values, using a comma-separated list
• Procedures supporting:
  • out parameters for returning values
  • @ parameters for pass-by-reference semantics
• Input/output primitives:
  • --> for printing expressions
  • -->! for printing with a newline
  • <-- for reading from standard input
• Control flow constructs:
  • if, elseif, else blocks
  • while loops
• Expressions:
  • Arithmetic: +, -, *, /, %
  • Logical: &&, ||, !
  • Relational: ==, !=, <, <=, >, >=
• Return statements with one or multiple expressions
• Syntactic sugar for formatting in output using $(...)
• Support for nested blocks and scoped variable declarations
• Comments using #

📄 Specifications

The full lexical and syntactic specification of the Toy2 language can be found in the
Documentation folder.

⚙️ Technologies Used

The compiler was built using the following tools and technologies:

• Java
• JFlex — for lexical analysis (token generation)
• CUP (Constructor of Useful Parsers) — for parsing and syntax analysis
• C — used as the target language for intermediate code generation.