From 2c0cb901c8ee464b9d5d4e069b98c692678b2ee7 Mon Sep 17 00:00:00 2001 From: Brian Anderson Date: Tue, 17 Apr 2012 22:02:00 -0700 Subject: syntax: Begin moving functions from mod parser to mod classify --- src/librustsyntax/parse/classify.rs | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 src/librustsyntax/parse/classify.rs (limited to 'src/librustsyntax/parse/classify.rs') diff --git a/src/librustsyntax/parse/classify.rs b/src/librustsyntax/parse/classify.rs new file mode 100644 index 00000000000..f2c9aece0c1 --- /dev/null +++ b/src/librustsyntax/parse/classify.rs @@ -0,0 +1,31 @@ +// FIXME: There are a bunch of similar functions in pprust that +// likely belong here + +fn expr_requires_semi_to_be_stmt(e: @ast::expr) -> bool { + alt e.node { + ast::expr_if(_, _, _) | ast::expr_if_check(_, _, _) + | ast::expr_alt(_, _, _) | ast::expr_block(_) + | ast::expr_do_while(_, _) | ast::expr_while(_, _) + | ast::expr_loop(_) | ast::expr_call(_, _, true) { + false + } + _ { true } + } +} + +fn stmt_ends_with_semi(stmt: ast::stmt) -> bool { + alt stmt.node { + ast::stmt_decl(d, _) { + ret alt d.node { + ast::decl_local(_) { true } + ast::decl_item(_) { false } + } + } + ast::stmt_expr(e, _) { + ret expr_requires_semi_to_be_stmt(e); + } + ast::stmt_semi(e, _) { + ret false; + } + } +} -- cgit 1.4.1-3-g733a5