# Program
Status: 🟢
Assertions: 1
```rustleaf
var s = 0;
for x in [1, 2, 3] {
s += x;
}
assert(s == 6);
```
# Output
```
parse_program: starting
parse_program: parsing statement at position 0 (Var)
parse_statement: starting at position 0 (Var)
consume_token: position 0 consumed Var
consume_token: position 1 consumed Ident
consume_token: position 2 consumed Equal
parse_expression: starting at position 3 (Int(0))
consume_token: position 3 consumed Int
parse_primary: success - parsed numeric/string literal
parse_expression: success - parsed precedence expression
consume_token: position 4 consumed Semicolon
parse_statement: success - parsed var declaration
parse_program: parsing statement at position 5 (For)
parse_statement: starting at position 5 (For)
parse_expression: starting at position 5 (For)
consume_token: position 5 consumed For
parse_primary: success - parsing for expression
consume_token: position 6 consumed Ident
consume_token: position 7 consumed In
parse_expression: starting at position 8 (LeftBracket)
consume_token: position 8 consumed LeftBracket
parse_primary: success - parsing list literal
parse_list_literal: starting at position 9
parse_list_literal: parsing element at position 9
parse_expression: starting at position 9 (Int(1))
consume_token: position 9 consumed Int
parse_primary: success - parsed numeric/string literal
parse_expression: success - parsed precedence expression
consume_token: position 10 consumed Comma
parse_list_literal: found comma, checking for more elements
parse_list_literal: parsing element at position 11
parse_expression: starting at position 11 (Int(2))
consume_token: position 11 consumed Int
parse_primary: success - parsed numeric/string literal
parse_expression: success - parsed precedence expression
consume_token: position 12 consumed Comma
parse_list_literal: found comma, checking for more elements
parse_list_literal: parsing element at position 13
parse_expression: starting at position 13 (Int(3))
consume_token: position 13 consumed Int
parse_primary: success - parsed numeric/string literal
parse_expression: success - parsed precedence expression
parse_list_literal: no comma, expecting ]
parse_list_literal: expecting ] at position 14
consume_token: position 14 consumed RightBracket
parse_list_literal: success
parse_expression: success - parsed precedence expression
consume_token: position 15 consumed LeftBrace
parse_statement: starting at position 16 (Ident(s))
consume_token: position 16 consumed Ident
consume_token: position 17 consumed PlusEqual
parse_expression: starting at position 18 (Ident(x))
consume_token: position 18 consumed Ident
parse_primary: success - parsed identifier (x)
parse_expression: success - parsed precedence expression
consume_token: position 19 consumed Semicolon
parse_statement: success - parsed assignment
consume_token: position 20 consumed RightBrace
parse_expression: success - parsed precedence expression
parse_statement: success - parsed block-like expression statement
parse_program: parsing statement at position 21 (Ident(assert))
parse_statement: starting at position 21 (Ident(assert))
consume_token: position 21 consumed Ident
parse_statement: falling back to expression statement
parse_expression: starting at position 21 (Ident(assert))
consume_token: position 21 consumed Ident
parse_primary: success - parsed identifier (assert)
consume_token: position 22 consumed LeftParen
parse_expression: starting at position 23 (Ident(s))
consume_token: position 23 consumed Ident
parse_primary: success - parsed identifier (s)
consume_token: position 24 consumed EqualEqual
consume_token: position 25 consumed Int
parse_primary: success - parsed numeric/string literal
parse_expression: success - parsed precedence expression
consume_token: position 26 consumed RightParen
parse_expression: success - parsed precedence expression
consume_token: position 27 consumed Semicolon
parse_program: parsed 3 statements
```
# Result
```rust
Ok(
Unit,
)
```
# Lex
```rust
Ok(
[
0: Token(Var),
1: Token(Ident, "s"),
2: Token(Equal),
3: Token(Int, "0"),
4: Token(Semicolon),
5: Token(For),
6: Token(Ident, "x"),
7: Token(In),
8: Token(LeftBracket),
9: Token(Int, "1"),
10: Token(Comma),
11: Token(Int, "2"),
12: Token(Comma),
13: Token(Int, "3"),
14: Token(RightBracket),
15: Token(LeftBrace),
16: Token(Ident, "s"),
17: Token(PlusEqual),
18: Token(Ident, "x"),
19: Token(Semicolon),
20: Token(RightBrace),
21: Token(Ident, "assert"),
22: Token(LeftParen),
23: Token(Ident, "s"),
24: Token(EqualEqual),
25: Token(Int, "6"),
26: Token(RightParen),
27: Token(Semicolon),
28: Token(Eof)
],
)
```
# Parse
```rust
Ok(
Program(
[
VarDecl {
pattern: Variable(
"s",
),
value: Some(
Literal(
Int(
0,
),
),
),
},
Expression(
For {
pattern: Variable(
"x",
),
iter: List(
[
Literal(
Int(
1,
),
),
Literal(
Int(
2,
),
),
Literal(
Int(
3,
),
),
],
),
body: Block {
statements: [
Assignment {
target: Identifier(
"s",
),
op: AddAssign,
value: Identifier(
"x",
),
},
],
final_expr: None,
},
},
),
Expression(
FunctionCall(
Identifier(
"assert",
),
[
Eq(
Identifier(
"s",
),
Literal(
Int(
6,
),
),
),
],
),
),
],
),
)
```
# Eval
```rust
Ok(
RustValue(<unknown>),
)
```