rustleaf 0.1.0

A simple programming language interpreter written in Rust
Documentation 
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# Program
Status: 🟢
Assertions: 1

```rustleaf
assert(false, "This should fail");
```

# Output
```
parse_program: starting
parse_program: parsing statement at position 0 (Ident(assert))
parse_statement: starting at position 0 (Ident(assert))
consume_token: position 0 consumed Ident
parse_statement: falling back to expression statement
parse_expression: starting at position 0 (Ident(assert))
consume_token: position 0 consumed Ident
parse_primary: success - parsed identifier (assert)
consume_token: position 1 consumed LeftParen
parse_expression: starting at position 2 (False)
consume_token: position 2 consumed False
parse_primary: success - parsed boolean literal (false)
parse_expression: success - parsed precedence expression
consume_token: position 3 consumed Comma
parse_expression: starting at position 4 (String(This should fail))
consume_token: position 4 consumed String
parse_primary: success - parsed numeric/string literal
parse_expression: success - parsed precedence expression
consume_token: position 5 consumed RightParen
parse_expression: success - parsed precedence expression
consume_token: position 6 consumed Semicolon
parse_program: parsed 1 statements
```

# Result
```rust
Err(
    "Assertion failed: This should fail",
)
```

# Lex
```rust
Ok(
    [
        0: Token(Ident, "assert"),
        1: Token(LeftParen),
        2: Token(False),
        3: Token(Comma),
        4: Token(String, "This should fail"),
        5: Token(RightParen),
        6: Token(Semicolon),
        7: Token(Eof)
    ],
)
```

# Parse
```rust
Ok(
    Program(
        [
            Expression(
                FunctionCall(
                    Identifier(
                        "assert",
                    ),
                    [
                        Literal(
                            Bool(
                                false,
                            ),
                        ),
                        Literal(
                            String(
                                "This should fail",
                            ),
                        ),
                    ],
                ),
            ),
        ],
    ),
)
```

# Eval
```rust
Ok(
    RustValue(<unknown>),
)
```