# Program
Status: 🟢
Assertions: 1
```rustleaf
var x = 10;
var y = 5;
var result = "Value: ${x + y * 2}";
assert(result == "Value: 20");
```
# 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(10))
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 (Var)
parse_statement: starting at position 5 (Var)
consume_token: position 5 consumed Var
consume_token: position 6 consumed Ident
consume_token: position 7 consumed Equal
parse_expression: starting at position 8 (Int(5))
consume_token: position 8 consumed Int
parse_primary: success - parsed numeric/string literal
parse_expression: success - parsed precedence expression
consume_token: position 9 consumed Semicolon
parse_statement: success - parsed var declaration
parse_program: parsing statement at position 10 (Var)
parse_statement: starting at position 10 (Var)
consume_token: position 10 consumed Var
consume_token: position 11 consumed Ident
consume_token: position 12 consumed Equal
parse_expression: starting at position 13 (StringPart(Value: ))
parse_primary: success - parsing interpolated string
consume_token: position 13 consumed StringPart
consume_token: position 14 consumed InterpolationStart
parse_expression: starting at position 15 (Ident(x))
consume_token: position 15 consumed Ident
parse_primary: success - parsed identifier (x)
consume_token: position 16 consumed Plus
consume_token: position 17 consumed Ident
parse_primary: success - parsed identifier (y)
consume_token: position 18 consumed Star
consume_token: position 19 consumed Int
parse_primary: success - parsed numeric/string literal
parse_expression: success - parsed precedence expression
consume_token: position 20 consumed InterpolationEnd
parse_expression: success - parsed precedence expression
consume_token: position 21 consumed Semicolon
parse_statement: success - parsed var declaration
parse_program: parsing statement at position 22 (Ident(assert))
parse_statement: starting at position 22 (Ident(assert))
consume_token: position 22 consumed Ident
parse_statement: falling back to expression statement
parse_expression: starting at position 22 (Ident(assert))
consume_token: position 22 consumed Ident
parse_primary: success - parsed identifier (assert)
consume_token: position 23 consumed LeftParen
parse_expression: starting at position 24 (Ident(result))
consume_token: position 24 consumed Ident
parse_primary: success - parsed identifier (result)
consume_token: position 25 consumed EqualEqual
consume_token: position 26 consumed String
parse_primary: success - parsed numeric/string literal
parse_expression: success - parsed precedence expression
consume_token: position 27 consumed RightParen
parse_expression: success - parsed precedence expression
consume_token: position 28 consumed Semicolon
parse_program: parsed 4 statements
```
# Result
```rust
Ok(
Unit,
)
```
# Lex
```rust
Ok(
[
0: Token(Var),
1: Token(Ident, "x"),
2: Token(Equal),
3: Token(Int, "10"),
4: Token(Semicolon),
5: Token(Var),
6: Token(Ident, "y"),
7: Token(Equal),
8: Token(Int, "5"),
9: Token(Semicolon),
10: Token(Var),
11: Token(Ident, "result"),
12: Token(Equal),
13: Token(StringPart, "Value: "),
14: Token(InterpolationStart),
15: Token(Ident, "x"),
16: Token(Plus),
17: Token(Ident, "y"),
18: Token(Star),
19: Token(Int, "2"),
20: Token(InterpolationEnd),
21: Token(Semicolon),
22: Token(Ident, "assert"),
23: Token(LeftParen),
24: Token(Ident, "result"),
25: Token(EqualEqual),
26: Token(String, "Value: 20"),
27: Token(RightParen),
28: Token(Semicolon),
29: Token(Eof)
],
)
```
# Parse
```rust
Ok(
Program(
[
VarDecl {
pattern: Variable(
"x",
),
value: Some(
Literal(
Int(
10,
),
),
),
},
VarDecl {
pattern: Variable(
"y",
),
value: Some(
Literal(
Int(
5,
),
),
),
},
VarDecl {
pattern: Variable(
"result",
),
value: Some(
InterpolatedString(
[
Text(
"Value: ",
),
Expression(
Add(
Identifier(
"x",
),
Mul(
Identifier(
"y",
),
Literal(
Int(
2,
),
),
),
),
),
],
),
),
},
Expression(
FunctionCall(
Identifier(
"assert",
),
[
Eq(
Identifier(
"result",
),
Literal(
String(
"Value: 20",
),
),
),
],
),
),
],
),
)
```
# Eval
```rust
Ok(
RustValue(<unknown>),
)
```