Semantic analysis for Pine Script — a static pre-check that runs after parsing and before execution.

Example

use pine_ast::Program;
use pine_lexer::Lexer;
use pine_parser::Parser;

let src = "x = clse + 1\n"; // typo: `clse`
let tokens = Lexer::new(src).tokenize().unwrap();
let program = Program::new(Parser::new(tokens).parse().unwrap());

use std::collections::HashMap;
use pine_interpreter::{DefaultPineOutput, Value};

// The built-ins the runtime registers; here just `close`.
let mut builtins: HashMap<String, Value<DefaultPineOutput>> = HashMap::new();
builtins.insert("close".to_string(), Value::Na);

let errors = pine_sema::analyze(&program, &builtins);
assert_eq!(errors.len(), 1);
assert_eq!(errors[0].rule, "undeclared-variable");