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Remove old sugared call syntax

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This commit is contained in:
Brian Anderson 2012-06-29 15:29:23 -07:00
parent a3382b6f26
commit 0293a31b68
1 changed files with 19 additions and 28 deletions
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47
src/libsyntax/parse/parser.rs
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@ -1040,26 +1040,6 @@ class parser {
e = self.mk_pexpr(lo, hi, nd);
}
// expr {|| ... }
token::LBRACE if (token::is_bar(self.look_ahead(1u))
&& self.permits_call()) {
self.bump();
let blk = self.parse_fn_block_expr();
alt e.node {
expr_call(f, args, false) {
e = pexpr(@{node: expr_call(f,
vec::append(args, ~[blk]),
true)
with *self.to_expr(e)});
}
_ {
e = self.mk_pexpr(lo, self.last_span.hi,
expr_call(self.to_expr(e),
~[blk], true));
}
}
}
// expr[...]
token::LBRACKET {
self.bump();
@ -1387,16 +1367,27 @@ class parser {
fn parse_sugary_call_expr(keyword: str,
ctor: fn(+@expr) -> expr_) -> @expr {
let lo = self.last_span;
let call = self.parse_expr_res(RESTRICT_STMT_EXPR);
alt call.node {
expr_call(f, args, true) {
let b_arg = vec::last(args);
let last = self.mk_expr(b_arg.span.lo, b_arg.span.hi,
ctor(b_arg));
@{node: expr_call(f, vec::append(vec::init(args), ~[last]), true)
with *call}
let e = self.parse_expr_res(RESTRICT_STMT_EXPR);
alt e.node {
expr_call(f, args, false) {
self.expect(token::LBRACE);
let block = self.parse_fn_block_expr();
let last_arg = self.mk_expr(block.span.lo, block.span.hi,
ctor(block));
let args = vec::append(args, ~[last_arg]);
@{node: expr_call(f, args, true)
with *e}
}
expr_path(*) | expr_field(*) | expr_call(*) {
self.expect(token::LBRACE);
let block = self.parse_fn_block_expr();
let last_arg = self.mk_expr(block.span.lo, block.span.hi,
ctor(block));
self.mk_expr(lo.lo, last_arg.span.hi,
expr_call(e, ~[last_arg], true))
}
_ {
self.warn(#fmt("unexpected sugary call %?", e.node));
self.span_fatal(
lo, #fmt("`%s` must be followed by a block call", keyword));
}