bjoernager/rust
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Add ecx.stmt_semi() and fix issues with the pretty-printer

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This commit is contained in:
Jeffrey Seyfried 2016-06-24 11:39:18 +00:00
parent 060a84d1f7
commit 8cad25199a
3 changed files with 18 additions and 3 deletions
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5
src/libsyntax/ext/build.rs
View file

@ -87,6 +87,7 @@ pub trait AstBuilder {
// statements
fn stmt_expr(&self, expr: P<ast::Expr>) -> ast::Stmt;
fn stmt_semi(&self, expr: P<ast::Expr>) -> ast::Stmt;
fn stmt_let(&self, sp: Span, mutbl: bool, ident: ast::Ident, ex: P<ast::Expr>) -> ast::Stmt;
fn stmt_let_typed(&self,
sp: Span,
@ -507,6 +508,10 @@ impl<'a> AstBuilder for ExtCtxt<'a> {
respan(expr.span, ast::StmtKind::Expr(expr, ast::DUMMY_NODE_ID))
}
fn stmt_semi(&self, expr: P<ast::Expr>) -> ast::Stmt {
respan(expr.span, ast::StmtKind::Semi(expr, ast::DUMMY_NODE_ID))
}
fn stmt_let(&self, sp: Span, mutbl: bool, ident: ast::Ident,
ex: P<ast::Expr>) -> ast::Stmt {
let pat = if mutbl {

1
src/libsyntax/parse/mod.rs
View file

@ -953,7 +953,6 @@ mod tests {
attrs: None,}),
ast::DUMMY_NODE_ID),
span: sp(17,19)}),
expr: None,
id: ast::DUMMY_NODE_ID,
rules: ast::BlockCheckMode::Default, // no idea
span: sp(15,21),

15
src/libsyntax/print/pprust.rs
View file

@ -1599,6 +1599,9 @@ impl<'a> State<'a> {
ast::StmtKind::Expr(ref expr, _) => {
try!(self.space_if_not_bol());
try!(self.print_expr_outer_attr_style(&expr, false));
if parse::classify::expr_requires_semi_to_be_stmt(expr) {
try!(word(&mut self.s, ";"));
}
}
ast::StmtKind::Semi(ref expr, _) => {
try!(self.space_if_not_bol());
@ -1662,9 +1665,17 @@ impl<'a> State<'a> {
try!(self.print_inner_attributes(attrs));
for st in &blk.stmts {
try!(self.print_stmt(st));
for (i, st) in blk.stmts.iter().enumerate() {
match st.node {
ast::StmtKind::Expr(ref expr, _) if i == blk.stmts.len() - 1 => {
try!(self.space_if_not_bol());
try!(self.print_expr_outer_attr_style(&expr, false));
try!(self.maybe_print_trailing_comment(expr.span, Some(blk.span.hi)));
}
_ => try!(self.print_stmt(st)),
}
}
try!(self.bclose_maybe_open(blk.span, indented, close_box));
self.ann.post(self, NodeBlock(blk))
}