Crate jzero 

jzero

A compiler and bytecode VM for Jzero — a small subset of Java.

Jzero supports classes, methods, control flow, basic types (int, double, boolean, String), arrays, string concatenation, and System.out.println.

Quick start

use jzero::Compiler;

let output = Compiler::new()
    .source("public class hello {
        public static void main(String argv[]) {
            System.out.println(\"hello, jzero!\");
        }
    }")
    .run(&[])
    .unwrap();

assert_eq!(output.stdout, "hello, jzero!\n");

Pipeline

source code
    → parse_tree()       [jzero-parser]
    → analyze()          [jzero-semantic]
    → generate()         [jzero-codegen]  → TAC IR
    → compile_bytecode() [jzero-codegen]  → .j0 binary
    → run()              [jzero-vm]       → stdout

Structs

BytecodeOutput

Result of the bytecode compilation step.

CodegenContext

All codegen state that lives outside the AST and symbol table.

CompileOutput

The result of compiling to bytecode without executing.

Compiler

The Jzero compiler.

JzeroError

A Jzero compilation or runtime error.

RunOutput

The result of a full compile + execute run.

SemanticResult

The result of semantic analysis.