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Print in prelude #5618

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36909c7
libsyntax: Don't allow `impl (Trait) for Type` (with the parentheses).
pcwalton Mar 29, 2013
ef56aa6
libcore: Add `print` and `println` to the prelude
pcwalton Mar 29, 2013
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4 changes: 4 additions & 0 deletions src/libcore/prelude.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -21,6 +21,10 @@ pub use ops::{Shl, Shr, Index};
pub use option::{Option, Some, None};
pub use result::{Result, Ok, Err};

/* Reexported functions */

pub use io::{print, println};

/* Reexported types and traits */

pub use clone::Clone;
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6 changes: 5 additions & 1 deletion src/libsyntax/parse/parser.rs
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Expand Up @@ -3107,11 +3107,15 @@ pub impl Parser {
// XXX: clownshoes
let ident = special_idents::clownshoes_extensions;

// Special case: if the next identifier that follows is '(', don't
// allow this to be parsed as a trait.
let could_be_trait = *self.token != token::LPAREN;

// Parse the trait.
let mut ty = self.parse_ty(false);

// Parse traits, if necessary.
let opt_trait = if self.eat_keyword(&~"for") {
let opt_trait = if could_be_trait && self.eat_keyword(&~"for") {
// New-style trait. Reinterpret the type as a trait.
let opt_trait_ref = match ty.node {
ty_path(path, node_id) => {
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