Smoola Compiler

What does it do?

This is a compiler for Smoola language. (You can see Smoola Documentation)

In Phase 1, the lexer of Smoola is made in Smoola.g4 using Antlr

In Phase 2, the AST is constructed from lexical analysis and the symbol table is filled. Finally, it shows up semantic errors.

In Phase 3, the remaining errors are shown and type-checking is done.

In Phase 4, Java bytecode of the Smoola program will be generated.

Phase 1 (Lexer)

Checking grammar of language.

Phase 2 (Semantics)

Errors

• Redefinition of methods
• Redefinition of variables
• Redefinition of classes
• New array with zero length

Phase 3 (Type-Checking)

Errors (Main Errors)

• Reference to an undeclared variable
• Unsupported usage of operand type
• Type-checking all conditions and statements
• Unsupported usage of method calls
• writeln type-checking
• Not validation of left side of assignment
• Return type validation
• and all other compile errors…

Phase 4 (Code Generation)

• All of the code generation process is handled in this phase.
• This compiler generates Java bytecode using jasmin assembler.
• After all, the Smoola program is run on Java Virtual Machine.

How to run?

Step 1:

You should at first generate Smoola.g4 grammer using Antlr. For more info about Antlr visit This Page.

Step 2:

You should run the whole Java project. For running that you can use MySmoola.java script. If you run this code, it runs the whole project easily.

Step 3:

After running the Java project, Java bytecode will be generated in the output folder. Then it’s time to run the generated code.
First go to the output directory in terminal. Then run

java -jar jasmin.jar *.j

and then it will create corresponding Java classes. Then you should run the program through executing your main class:

java <MainClass>