pub fn parse_expression(tokens: Vec<Token>) -> Result<Expr, String>Expand description
Parse a token stream as a single Polydat expression.
Used by string-interpolation desugaring to compile placeholder
bodies ({ … } inside string literals) the same way any
other binding right-hand side is compiled. Identifiers,
nested function calls, infix arithmetic, and field access
all work uniformly because this is the same parse_expr
entry the compiler uses elsewhere.
// "{format_u64(hash(cycle), 10)}" → printf("{}", format_u64(hash(cycle), 10))
// "{a + b}" → printf("{}", a + b)Returns an error if the tokens don’t form a single complete expression, or if there are trailing tokens after the expression ends.