Added tests, Bugfix
- Originally, it spanned from operator (bug)
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parent
1f78cb0ee1
commit
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112
src/parser.rs
112
src/parser.rs
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@ -134,7 +134,10 @@ impl<'source> Parser<'source> {
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/// Expressions do not have any side effects and the are
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/// only mathematial and logical operations or values.
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fn parse_expr(&mut self, token: Token, buf: &mut Option<Expr>) -> Result<Expr, Error> {
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let start = self.lexer.span().start;
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let start = match buf {
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Some(e) => e.span.start,
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None => self.lexer.span().start,
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};
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match token {
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// Values
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@ -390,3 +393,110 @@ impl<'source> Parser<'source> {
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})
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn simple_math() {
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let code = r#"1 * (a + 3) / 666 print;"#;
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let expected = &[Stmt {
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kind: StmtKind::Print(Expr {
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kind: ExprKind::BinOp {
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lhs: Box::new(Expr {
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kind: ExprKind::BinOp {
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lhs: Box::new(Expr {
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kind: ExprKind::Literal(Value::Int(1)),
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span: 0..1,
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}),
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rhs: Box::new(Expr {
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kind: ExprKind::BinOp {
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lhs: Box::new(Expr {
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kind: ExprKind::Variable("a".to_string()),
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span: 5..6,
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}),
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rhs: Box::new(Expr {
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kind: ExprKind::Literal(Value::Int(3)),
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span: 9..10,
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}),
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kind: BinOpKind::Add,
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},
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span: 5..10,
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}),
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kind: BinOpKind::Multiply,
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},
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span: 0..11,
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}),
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rhs: Box::new(Expr {
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kind: ExprKind::Literal(Value::Int(666)),
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span: 14..17,
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}),
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kind: BinOpKind::Divide,
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},
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span: 0..17,
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}),
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span: 0..24,
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}];
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let ast = Parser::new(code).init().unwrap();
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assert_eq!(ast, expected);
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}
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#[test]
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fn variable_declaration() {
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let code = r#"var a = 42;"#;
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let expected = &[Stmt {
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kind: StmtKind::Var {
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iden: Iden {
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iden: "a".to_string(),
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span: 4..5,
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},
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init: Some(Expr {
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kind: ExprKind::Literal(Value::Int(42)),
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span: 8..10,
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}),
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},
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span: 0..11,
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}];
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let ast = Parser::new(code).init().unwrap();
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assert_eq!(ast, expected);
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}
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#[test]
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fn if_flow() {
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let code = r#"if (a == always) { "Buy Able products!" print; }"#;
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let expected = &[Stmt {
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kind: StmtKind::If {
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cond: Expr {
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kind: ExprKind::BinOp {
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lhs: Box::new(Expr {
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kind: ExprKind::Variable("a".to_owned()),
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span: 4..5,
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}),
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rhs: Box::new(Expr {
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kind: ExprKind::Literal(Value::Abool(crate::variables::Abool::Always)),
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span: 9..15,
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}),
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kind: BinOpKind::Equal,
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},
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span: 4..15,
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},
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body: Block {
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block: vec![Stmt {
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kind: StmtKind::Print(Expr {
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kind: ExprKind::Literal(Value::Str("Buy Able products!".to_string())),
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span: 19..39,
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}),
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span: 19..46,
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}],
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},
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},
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span: 0..48,
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}];
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let ast = Parser::new(code).init().unwrap();
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assert_eq!(ast, expected);
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}
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}
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