hare

commit 27bc1805b31bb31f4552137425b6b6f02517a070
parent a8ea19b4793d0332b5af65e2e7425dc5092313b7
Author: Alexey Yerin <yyp@disroot.org>
Date:   Sun, 18 Apr 2021 21:53:39 +0300

hare/parse,unparse: add size expression

Diffstat:
M
hare/parse/+test/expr.ha
 | 
1
+
M
hare/parse/expr.ha
 | 
8
+++++++-
M
hare/unparse/expr.ha
 | 
6
+++++-

3 files changed, 13 insertions(+), 2 deletions(-)
diff --git a/hare/parse/+test/expr.ha b/hare/parse/+test/expr.ha
@@ -43,6 +43,7 @@
 	delete(x[..]);
 	free(x);
 	len([1, 2, 3, 4]);
+	size(u32);
 };
 ");
 };
diff --git a/hare/parse/expr.ha b/hare/parse/expr.ha
@@ -147,7 +147,13 @@ fn measurement(lexer: *lex::lexer) (ast::expr | error) = {
 
 			alloc(e): ast::len_expr;
 		},
-		ltok::SIZE => abort(), // TODO
+		ltok::SIZE => {
+			want(lexer, ltok::LPAREN)?;
+			let ty = _type(lexer)?;
+			want(lexer, ltok::RPAREN)?;
+
+			alloc(ty): ast::size_expr;
+		},
 		ltok::OFFSET => abort(), // TODO
 	};
 };
diff --git a/hare/unparse/expr.ha b/hare/unparse/expr.ha
@@ -225,7 +225,11 @@ export fn expr(
 			z += expr(out, indent, *e)?;
 			z + fmt::fprint(out, ")")?;
 		},
-		e: ast::size_expr => abort(),
+		e: ast::size_expr => {
+			let z = fmt::fprint(out, "size(")?;
+			z += _type(out, indent, *e)?;
+			z + fmt::fprint(out, ")")?;
+		},
 		e: ast::offset_expr => abort(),
 		e: ast::propagate_expr => {
 			let z = expr(out, indent, *e)?;