bjoernager/rust
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Remove <- operator from the compiler

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Yield an obsolete syntax error on things like "let foo <- bar;"
and "foo <- bar;" r=brson

Progress on #3466
This commit is contained in:
Tim Chevalier 2012-10-23 11:28:20 -07:00
parent 48c8d1fecd
commit 087cbb55d0
19 changed files with 53 additions and 132 deletions
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4
src/libsyntax/parse/classify.rs
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@ -43,7 +43,6 @@ fn need_parens(expr: @ast::expr, outer_prec: uint) -> bool {
ast::expr_cast(_, _) => parse::prec::as_prec < outer_prec,
// This may be too conservative in some cases
ast::expr_assign(_, _) => true,
ast::expr_move(_, _) => true,
ast::expr_swap(_, _) => true,
ast::expr_assign_op(_, _, _) => true,
ast::expr_ret(_) => true,
@ -61,8 +60,7 @@ fn ends_in_lit_int(ex: @ast::expr) -> bool {
_ => false
},
ast::expr_binary(_, _, sub) | ast::expr_unary(_, sub) |
ast::expr_move(_, sub) | ast::expr_copy(sub) |
ast::expr_assign(_, sub) |
ast::expr_copy(sub) | ast::expr_assign(_, sub) |
ast::expr_assign_op(_, _, sub) | ast::expr_swap(_, sub) |
ast::expr_log(_, _, sub) | ast::expr_assert(sub) => {
ends_in_lit_int(sub)