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syntax: Stop parsing old closure syntax

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This commit is contained in:
Brian Anderson 2012-07-01 14:53:46 -07:00
parent d1fc2b5995
commit 494264711d
1 changed files with 10 additions and 26 deletions
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36
src/libsyntax/parse/parser.rs
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@ -776,8 +776,6 @@ class parser {
hi = self.span.hi;
self.expect(token::RBRACE);
ex = expr_rec(fields, base);
} else if token::is_bar(self.token) {
ret pexpr(self.parse_fn_block_expr_old());
} else {
let blk = self.parse_block_tail(lo, default_blk);
ret self.mk_pexpr(blk.span.lo, blk.span.hi, expr_block(blk));
@ -1357,14 +1355,6 @@ class parser {
expr_fn(proto, decl, body, capture_clause));
}
fn parse_fn_block_expr_old() -> @expr {
let lo = self.last_span.lo;
let (decl, captures) = self.parse_fn_block_decl();
let body = self.parse_block_tail(lo, default_blk);
ret self.mk_expr(lo, body.span.hi,
expr_fn_block(decl, body, captures));
}
// `|args| { ... }` like in `do` expressions
fn parse_lambda_block_expr() -> @expr {
self.parse_lambda_expr_(|| {
@ -1379,22 +1369,16 @@ class parser {
}
fn parse_lambda_expr_(parse_body: fn&() -> @expr) -> @expr {
if self.token == token::LBRACE {
// Old style lambdas `{|args| ... }`
self.expect(token::LBRACE);
ret self.parse_fn_block_expr_old();
} else {
let lo = self.last_span.lo;
// New style lambdas `|args| expr`
let (decl, captures) = self.parse_fn_block_decl();
let body = parse_body();
let fakeblock = {view_items: ~[], stmts: ~[], expr: some(body),
id: self.get_id(), rules: default_blk};
let fakeblock = spanned(body.span.lo, body.span.hi,
fakeblock);
ret self.mk_expr(lo, body.span.hi,
expr_fn_block(decl, fakeblock, captures));
}
let lo = self.last_span.lo;
// New style lambdas `|args| expr`
let (decl, captures) = self.parse_fn_block_decl();
let body = parse_body();
let fakeblock = {view_items: ~[], stmts: ~[], expr: some(body),
id: self.get_id(), rules: default_blk};
let fakeblock = spanned(body.span.lo, body.span.hi,
fakeblock);
ret self.mk_expr(lo, body.span.hi,
expr_fn_block(decl, fakeblock, captures));
}
fn parse_else_expr() -> @expr {