File: left_associativity.rs

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use glsl::parser::Parse;
use glsl::syntax;

#[test]
fn left_associativity() {
  let r = syntax::TranslationUnit::parse(
    "
    void main() {
      x = a + b + c;
    }
  ",
  );

  let expected = syntax::TranslationUnit::from_non_empty_iter(vec![
    syntax::ExternalDeclaration::FunctionDefinition(syntax::FunctionDefinition {
      prototype: syntax::FunctionPrototype {
        ty: syntax::FullySpecifiedType {
          qualifier: None,
          ty: syntax::TypeSpecifier {
            ty: syntax::TypeSpecifierNonArray::Void,
            array_specifier: None,
          },
        },
        name: "main".into(),
        parameters: Vec::new(),
      },
      statement: syntax::CompoundStatement {
        statement_list: vec![syntax::Statement::Simple(Box::new(
          syntax::SimpleStatement::Expression(Some(syntax::Expr::Assignment(
            Box::new(syntax::Expr::Variable("x".into())),
            syntax::AssignmentOp::Equal,
            Box::new(syntax::Expr::Binary(
              syntax::BinaryOp::Add,
              Box::new(syntax::Expr::Binary(
                syntax::BinaryOp::Add,
                Box::new(syntax::Expr::Variable("a".into())),
                Box::new(syntax::Expr::Variable("b".into())),
              )),
              Box::new(syntax::Expr::Variable("c".into())),
            )),
          ))),
        ))],
      },
    }),
  ])
  .unwrap();

  assert_eq!(r, Ok(expected));
}