decaf compiler

A compiler for a toy language "decaf"

structure

scanner.l accepts the language tokens and gives them to parser parser.y tallies the incoming tokens w.t.t. grammar and initializs nodes. test-files contains some files of decaf language to test our compiler ast.h contains all the nodes and it's constructors of ast in the compiler (just a model, not integrated into code) visitor.h contains the parent visitor class to perform any actions on nodes of AST visitable_nodes.h contains the nodes that has accept method in it irgenerator.cpp contains the generation code for IR using AST

run

open a console in compiler folder run make then ./xpr

description

here's the flow scanner.l

parser.y constructs nodes in visitable_nodes.h the nodes accept a IR generator object, which visits appropriate node irgenerator.cpp generates ir by visiting nodes.

To be implemented

Handle scope for variables IR generation for some nodes if, for, method call etc.,