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f499d365
编写于
12月 30, 2013
作者:
P
Patrick Walton
浏览文件
操作
浏览文件
下载
电子邮件补丁
差异文件
libsyntax: Make the parser mutable
上级
0df9b850
变更
13
展开全部
显示空白变更内容
内联
并排
Showing
13 changed file
with
518 addition
and
487 deletion
+518
-487
src/libsyntax/ext/asm.rs
src/libsyntax/ext/asm.rs
+3
-3
src/libsyntax/ext/base.rs
src/libsyntax/ext/base.rs
+3
-3
src/libsyntax/ext/cfg.rs
src/libsyntax/ext/cfg.rs
+3
-1
src/libsyntax/ext/format.rs
src/libsyntax/ext/format.rs
+5
-5
src/libsyntax/ext/quote.rs
src/libsyntax/ext/quote.rs
+5
-9
src/libsyntax/ext/source_util.rs
src/libsyntax/ext/source_util.rs
+7
-3
src/libsyntax/ext/trace_macros.rs
src/libsyntax/ext/trace_macros.rs
+2
-2
src/libsyntax/ext/tt/macro_parser.rs
src/libsyntax/ext/tt/macro_parser.rs
+3
-3
src/libsyntax/ext/tt/macro_rules.rs
src/libsyntax/ext/tt/macro_rules.rs
+28
-16
src/libsyntax/parse/attr.rs
src/libsyntax/parse/attr.rs
+17
-16
src/libsyntax/parse/mod.rs
src/libsyntax/parse/mod.rs
+19
-34
src/libsyntax/parse/obsolete.rs
src/libsyntax/parse/obsolete.rs
+13
-13
src/libsyntax/parse/parser.rs
src/libsyntax/parse/parser.rs
+410
-379
未找到文件。
src/libsyntax/ext/asm.rs
浏览文件 @
f499d365
...
...
@@ -39,7 +39,7 @@ fn next_state(s: State) -> Option<State> {
pub
fn
expand_asm
(
cx
:
&
mut
ExtCtxt
,
sp
:
Span
,
tts
:
&
[
ast
::
token_tree
])
->
base
::
MacResult
{
let
p
=
parse
::
new_parser_from_tts
(
cx
.parse_sess
(),
let
mut
p
=
parse
::
new_parser_from_tts
(
cx
.parse_sess
(),
cx
.cfg
(),
tts
.to_owned
());
...
...
src/libsyntax/ext/base.rs
浏览文件 @
f499d365
...
...
@@ -442,7 +442,7 @@ pub fn get_single_str_from_tts(cx: &ExtCtxt,
pub
fn
get_exprs_from_tts
(
cx
:
&
ExtCtxt
,
sp
:
Span
,
tts
:
&
[
ast
::
token_tree
])
->
~
[
@
ast
::
Expr
]
{
let
p
=
parse
::
new_parser_from_tts
(
cx
.parse_sess
(),
let
mut
p
=
parse
::
new_parser_from_tts
(
cx
.parse_sess
(),
cx
.cfg
(),
tts
.to_owned
());
let
mut
es
=
~
[];
...
...
src/libsyntax/ext/cfg.rs
浏览文件 @
f499d365
...
...
@@ -26,7 +26,9 @@
use
parse
::
attr
::
parser_attr
;
pub
fn
expand_cfg
(
cx
:
&
mut
ExtCtxt
,
sp
:
Span
,
tts
:
&
[
ast
::
token_tree
])
->
base
::
MacResult
{
let
p
=
parse
::
new_parser_from_tts
(
cx
.parse_sess
(),
cx
.cfg
(),
tts
.to_owned
());
let
mut
p
=
parse
::
new_parser_from_tts
(
cx
.parse_sess
(),
cx
.cfg
(),
tts
.to_owned
());
let
mut
cfgs
=
~
[];
// parse `cfg!(meta_item, meta_item(x,y), meta_item="foo", ...)`
...
...
src/libsyntax/ext/format.rs
浏览文件 @
f499d365
...
...
@@ -53,9 +53,9 @@ struct Context<'a> {
impl
<
'a
>
Context
<
'a
>
{
/// Parses the arguments from the given list of tokens, returning None if
/// there's a parse error so we can continue parsing other format! expressions.
fn
parse_args
(
&
mut
self
,
sp
:
Span
,
tts
:
&
[
ast
::
token_tree
])
->
(
@
ast
::
Expr
,
Option
<@
ast
::
Expr
>
)
{
let
p
=
rsparse
::
new_parser_from_tts
(
self
.ecx
.parse_sess
(),
fn
parse_args
(
&
mut
self
,
sp
:
Span
,
tts
:
&
[
ast
::
token_tree
])
->
(
@
ast
::
Expr
,
Option
<@
ast
::
Expr
>
)
{
let
mut
p
=
rsparse
::
new_parser_from_tts
(
self
.ecx
.parse_sess
(),
self
.ecx
.cfg
(),
tts
.to_owned
());
// Parse the leading function expression (maybe a block, maybe a path)
...
...
src/libsyntax/ext/quote.rs
浏览文件 @
f499d365
...
...
@@ -579,21 +579,17 @@ fn mk_tts(cx: &ExtCtxt, sp: Span, tts: &[ast::token_tree])
ss
}
fn
expand_tts
(
cx
:
&
ExtCtxt
,
sp
:
Span
,
tts
:
&
[
ast
::
token_tree
])
->
(
@
ast
::
Expr
,
@
ast
::
Expr
)
{
fn
expand_tts
(
cx
:
&
ExtCtxt
,
sp
:
Span
,
tts
:
&
[
ast
::
token_tree
])
->
(
@
ast
::
Expr
,
@
ast
::
Expr
)
{
// NB: It appears that the main parser loses its mind if we consider
// $foo as a tt_nonterminal during the main parse, so we have to re-parse
// under quote_depth > 0. This is silly and should go away; the _guess_ is
// it has to do with transition away from supporting old-style macros, so
// try removing it when enough of them are gone.
let
p
=
parse
::
new_parser_from_tts
(
cx
.parse_sess
(),
let
mut
p
=
parse
::
new_parser_from_tts
(
cx
.parse_sess
(),
cx
.cfg
(),
tts
.to_owned
()
);
tts
.to_owned
());
*
p
.quote_depth
+=
1u
;
let
cx_expr
=
p
.parse_expr
();
...
...
src/libsyntax/ext/source_util.rs
浏览文件 @
f499d365
...
...
@@ -81,9 +81,13 @@ pub fn expand_include(cx: &mut ExtCtxt, sp: Span, tts: &[ast::token_tree])
->
base
::
MacResult
{
let
file
=
get_single_str_from_tts
(
cx
,
sp
,
tts
,
"include!"
);
// The file will be added to the code map by the parser
let
p
=
parse
::
new_sub_parser_from_file
(
cx
.parse_sess
(),
cx
.cfg
(),
&
res_rel_file
(
cx
,
sp
,
&
Path
::
new
(
file
)),
sp
);
let
mut
p
=
parse
::
new_sub_parser_from_file
(
cx
.parse_sess
(),
cx
.cfg
(),
&
res_rel_file
(
cx
,
sp
,
&
Path
::
new
(
file
)),
sp
);
base
::
MRExpr
(
p
.parse_expr
())
}
...
...
src/libsyntax/ext/trace_macros.rs
浏览文件 @
f499d365
...
...
@@ -26,7 +26,7 @@ pub fn expand_trace_macros(cx: &mut ExtCtxt,
None
,
tt
.to_owned
());
let
rdr
=
tt_rdr
as
@
mut
reader
;
let
rust_parser
=
Parser
(
sess
,
cfg
.clone
(),
rdr
.dup
());
let
mut
rust_parser
=
Parser
(
sess
,
cfg
.clone
(),
rdr
.dup
());
if
rust_parser
.is_keyword
(
keywords
::
True
)
{
cx
.set_trace_macros
(
true
);
...
...
@@ -38,7 +38,7 @@ pub fn expand_trace_macros(cx: &mut ExtCtxt,
rust_parser
.bump
();
let
rust_parser
=
Parser
(
sess
,
cfg
,
rdr
.dup
());
let
mut
rust_parser
=
Parser
(
sess
,
cfg
,
rdr
.dup
());
let
result
=
rust_parser
.parse_expr
();
base
::
MRExpr
(
result
)
}
src/libsyntax/ext/tt/macro_parser.rs
浏览文件 @
f499d365
...
...
@@ -403,13 +403,13 @@ pub fn parse(
}
rdr
.next_token
();
}
else
/* bb_eis.len() == 1 */
{
let
rust_parser
=
Parser
(
sess
,
cfg
.clone
(),
rdr
.dup
());
let
mut
rust_parser
=
Parser
(
sess
,
cfg
.clone
(),
rdr
.dup
());
let
mut
ei
=
bb_eis
.pop
();
match
ei
.elts
[
ei
.idx
]
.node
{
match_nonterminal
(
_
,
ref
name
,
idx
)
=>
{
ei
.matches
[
idx
]
.push
(
@
matched_nonterminal
(
parse_nt
(
&
rust_parser
,
ident_to_str
(
name
))));
parse_nt
(
&
mut
rust_parser
,
ident_to_str
(
name
))));
ei
.idx
+=
1u
;
}
_
=>
fail
!
()
...
...
@@ -426,7 +426,7 @@ pub fn parse(
}
}
pub
fn
parse_nt
(
p
:
&
Parser
,
name
:
&
str
)
->
nonterminal
{
pub
fn
parse_nt
(
p
:
&
mut
Parser
,
name
:
&
str
)
->
nonterminal
{
match
name
{
"item"
=>
match
p
.parse_item
(
~
[])
{
Some
(
i
)
=>
token
::
nt_item
(
i
),
...
...
src/libsyntax/ext/tt/macro_rules.rs
浏览文件 @
f499d365
...
...
@@ -24,10 +24,11 @@
use
parse
::
token
::{
get_ident_interner
,
special_idents
,
gensym_ident
,
ident_to_str
};
use
parse
::
token
::{
FAT_ARROW
,
SEMI
,
nt_matchers
,
nt_tt
,
EOF
};
use
print
;
use
std
::
cell
::
RefCell
;
use
util
::
small_vector
::
SmallVector
;
struct
ParserAnyMacro
{
parser
:
@
Parser
,
parser
:
RefCell
<
Parser
>
,
}
impl
ParserAnyMacro
{
...
...
@@ -38,28 +39,36 @@ impl ParserAnyMacro {
/// fail!(); } )` doesn't get picked up by .parse_expr(), but it's
/// allowed to be there.
fn
ensure_complete_parse
(
&
self
,
allow_semi
:
bool
)
{
if
allow_semi
&&
*
self
.parser.token
==
SEMI
{
self
.parser
.bump
()
let
mut
parser
=
self
.parser
.borrow_mut
();
if
allow_semi
&&
*
parser
.get
()
.token
==
SEMI
{
parser
.get
()
.bump
()
}
if
*
self
.parser.token
!=
EOF
{
let
msg
=
format!
(
"macro expansion ignores token `{}` and any following"
,
self
.parser
.this_token_to_str
());
self
.parser
.span_err
(
*
self
.parser.span
,
msg
);
if
*
parser
.get
()
.token
!=
EOF
{
let
token_str
=
parser
.get
()
.this_token_to_str
();
let
msg
=
format!
(
"macro expansion ignores token `{}` and any
\
following"
,
token_str
);
let
span
=
*
parser
.get
()
.span
;
parser
.get
()
.span_err
(
span
,
msg
);
}
}
}
impl
AnyMacro
for
ParserAnyMacro
{
fn
make_expr
(
&
self
)
->
@
ast
::
Expr
{
let
ret
=
self
.parser
.parse_expr
();
let
ret
=
{
let
mut
parser
=
self
.parser
.borrow_mut
();
parser
.get
()
.parse_expr
()
};
self
.ensure_complete_parse
(
true
);
ret
}
fn
make_items
(
&
self
)
->
SmallVector
<@
ast
::
item
>
{
let
mut
ret
=
SmallVector
::
zero
();
loop
{
let
attrs
=
self
.parser
.parse_outer_attributes
();
match
self
.parser
.parse_item
(
attrs
)
{
let
mut
parser
=
self
.parser
.borrow_mut
();
let
attrs
=
parser
.get
()
.parse_outer_attributes
();
match
parser
.get
()
.parse_item
(
attrs
)
{
Some
(
item
)
=>
ret
.push
(
item
),
None
=>
break
}
...
...
@@ -68,8 +77,11 @@ fn make_items(&self) -> SmallVector<@ast::item> {
ret
}
fn
make_stmt
(
&
self
)
->
@
ast
::
Stmt
{
let
attrs
=
self
.parser
.parse_outer_attributes
();
let
ret
=
self
.parser
.parse_stmt
(
attrs
);
let
ret
=
{
let
mut
parser
=
self
.parser
.borrow_mut
();
let
attrs
=
parser
.get
()
.parse_outer_attributes
();
parser
.get
()
.parse_stmt
(
attrs
)
};
self
.ensure_complete_parse
(
true
);
ret
}
...
...
@@ -142,14 +154,14 @@ fn generic_extension(cx: &ExtCtxt,
// rhs has holes ( `$id` and `$(...)` that need filled)
let
trncbr
=
new_tt_reader
(
s_d
,
Some
(
named_matches
),
rhs
);
let
p
=
@
Parser
(
cx
.parse_sess
(),
let
p
=
Parser
(
cx
.parse_sess
(),
cx
.cfg
(),
trncbr
as
@
mut
reader
);
// Let the context choose how to interpret the result.
// Weird, but useful for X-macros.
return
MRAny
(
@
ParserAnyMacro
{
parser
:
p
,
parser
:
RefCell
::
new
(
p
)
,
}
as
@
AnyMacro
)
}
failure
(
sp
,
ref
msg
)
=>
if
sp
.lo
>=
best_fail_spot
.lo
{
...
...
src/libsyntax/parse/attr.rs
浏览文件 @
f499d365
...
...
@@ -17,19 +17,18 @@
// a parser that can parse attributes.
pub
trait
parser_attr
{
fn
parse_outer_attributes
(
&
self
)
->
~
[
ast
::
Attribute
];
fn
parse_attribute
(
&
self
,
permit_inner
:
bool
)
->
ast
::
Attribute
;
fn
parse_inner_attrs_and_next
(
&
self
)
->
(
~
[
ast
::
Attribute
],
~
[
ast
::
Attribute
]);
fn
parse_meta_item
(
&
self
)
->
@
ast
::
MetaItem
;
fn
parse_meta_seq
(
&
self
)
->
~
[
@
ast
::
MetaItem
];
fn
parse_optional_meta
(
&
self
)
->
~
[
@
ast
::
MetaItem
];
fn
parse_outer_attributes
(
&
mut
self
)
->
~
[
ast
::
Attribute
];
fn
parse_attribute
(
&
mut
self
,
permit_inner
:
bool
)
->
ast
::
Attribute
;
fn
parse_inner_attrs_and_next
(
&
mut
self
)
->
(
~
[
ast
::
Attribute
],
~
[
ast
::
Attribute
]);
fn
parse_meta_item
(
&
mut
self
)
->
@
ast
::
MetaItem
;
fn
parse_meta_seq
(
&
mut
self
)
->
~
[
@
ast
::
MetaItem
];
fn
parse_optional_meta
(
&
mut
self
)
->
~
[
@
ast
::
MetaItem
];
}
impl
parser_attr
for
Parser
{
// Parse attributes that appear before an item
fn
parse_outer_attributes
(
&
self
)
->
~
[
ast
::
Attribute
]
{
fn
parse_outer_attributes
(
&
mut
self
)
->
~
[
ast
::
Attribute
]
{
let
mut
attrs
:
~
[
ast
::
Attribute
]
=
~
[];
loop
{
debug!
(
"parse_outer_attributes: self.token={:?}"
,
...
...
@@ -66,7 +65,7 @@ fn parse_outer_attributes(&self) -> ~[ast::Attribute] {
//
// if permit_inner is true, then a trailing `;` indicates an inner
// attribute
fn
parse_attribute
(
&
self
,
permit_inner
:
bool
)
->
ast
::
Attribute
{
fn
parse_attribute
(
&
mut
self
,
permit_inner
:
bool
)
->
ast
::
Attribute
{
debug!
(
"parse_attributes: permit_inner={:?} self.token={:?}"
,
permit_inner
,
self
.token
);
let
(
span
,
value
)
=
match
*
self
.token
{
...
...
@@ -85,8 +84,9 @@ fn parse_attribute(&self, permit_inner: bool) -> ast::Attribute {
(
mk_sp
(
lo
,
hi
),
meta_item
)
}
_
=>
{
let
token_str
=
self
.this_token_to_str
();
self
.fatal
(
format!
(
"expected `
\\
#` but found `{}`"
,
self
.this_token_to_str
()
));
token_str
));
}
};
let
style
=
if
permit_inner
&&
*
self
.token
==
token
::
SEMI
{
...
...
@@ -115,7 +115,7 @@ fn parse_attribute(&self, permit_inner: bool) -> ast::Attribute {
// matches inner_attrs* outer_attr?
// you can make the 'next' field an Option, but the result is going to be
// more useful as a vector.
fn
parse_inner_attrs_and_next
(
&
self
)
fn
parse_inner_attrs_and_next
(
&
mut
self
)
->
(
~
[
ast
::
Attribute
],
~
[
ast
::
Attribute
])
{
let
mut
inner_attrs
:
~
[
ast
::
Attribute
]
=
~
[];
let
mut
next_outer_attrs
:
~
[
ast
::
Attribute
]
=
~
[];
...
...
@@ -154,9 +154,10 @@ fn parse_inner_attrs_and_next(&self)
// matches meta_item = IDENT
// | IDENT = lit
// | IDENT meta_seq
fn
parse_meta_item
(
&
self
)
->
@
ast
::
MetaItem
{
fn
parse_meta_item
(
&
mut
self
)
->
@
ast
::
MetaItem
{
let
lo
=
self
.span.lo
;
let
name
=
self
.id_to_str
(
self
.parse_ident
());
let
ident
=
self
.parse_ident
();
let
name
=
self
.id_to_str
(
ident
);
match
*
self
.token
{
token
::
EQ
=>
{
self
.bump
();
...
...
@@ -187,14 +188,14 @@ fn parse_meta_item(&self) -> @ast::MetaItem {
}
// matches meta_seq = ( COMMASEP(meta_item) )
fn
parse_meta_seq
(
&
self
)
->
~
[
@
ast
::
MetaItem
]
{
fn
parse_meta_seq
(
&
mut
self
)
->
~
[
@
ast
::
MetaItem
]
{
self
.parse_seq
(
&
token
::
LPAREN
,
&
token
::
RPAREN
,
seq_sep_trailing_disallowed
(
token
::
COMMA
),
|
p
|
p
.parse_meta_item
())
.node
}
fn
parse_optional_meta
(
&
self
)
->
~
[
@
ast
::
MetaItem
]
{
fn
parse_optional_meta
(
&
mut
self
)
->
~
[
@
ast
::
MetaItem
]
{
match
*
self
.token
{
token
::
LPAREN
=>
self
.parse_meta_seq
(),
_
=>
~
[]
...
...
src/libsyntax/parse/mod.rs
浏览文件 @
f499d365
...
...
@@ -84,7 +84,7 @@ pub fn parse_crate_attrs_from_file(
cfg
:
ast
::
CrateConfig
,
sess
:
@
mut
ParseSess
)
->
~
[
ast
::
Attribute
]
{
let
parser
=
new_parser_from_file
(
sess
,
cfg
,
input
);
let
mut
parser
=
new_parser_from_file
(
sess
,
cfg
,
input
);
let
(
inner
,
_
)
=
parser
.parse_inner_attrs_and_next
();
return
inner
;
}
...
...
@@ -95,7 +95,7 @@ pub fn parse_crate_from_source_str(
cfg
:
ast
::
CrateConfig
,
sess
:
@
mut
ParseSess
)
->
ast
::
Crate
{
let
p
=
new_parser_from_source_str
(
sess
,
let
mut
p
=
new_parser_from_source_str
(
sess
,
/*bad*/
cfg
.clone
(),
name
,
source
);
...
...
@@ -108,7 +108,7 @@ pub fn parse_crate_attrs_from_source_str(
cfg
:
ast
::
CrateConfig
,
sess
:
@
mut
ParseSess
)
->
~
[
ast
::
Attribute
]
{
let
p
=
new_parser_from_source_str
(
sess
,
let
mut
p
=
new_parser_from_source_str
(
sess
,
/*bad*/
cfg
.clone
(),
name
,
source
);
...
...
@@ -122,12 +122,7 @@ pub fn parse_expr_from_source_str(
cfg
:
ast
::
CrateConfig
,
sess
:
@
mut
ParseSess
)
->
@
ast
::
Expr
{
let
p
=
new_parser_from_source_str
(
sess
,
cfg
,
name
,
source
);
let
mut
p
=
new_parser_from_source_str
(
sess
,
cfg
,
name
,
source
);
maybe_aborted
(
p
.parse_expr
(),
p
)
}
...
...
@@ -138,12 +133,7 @@ pub fn parse_item_from_source_str(
attrs
:
~
[
ast
::
Attribute
],
sess
:
@
mut
ParseSess
)
->
Option
<@
ast
::
item
>
{
let
p
=
new_parser_from_source_str
(
sess
,
cfg
,
name
,
source
);
let
mut
p
=
new_parser_from_source_str
(
sess
,
cfg
,
name
,
source
);
maybe_aborted
(
p
.parse_item
(
attrs
),
p
)
}
...
...
@@ -153,12 +143,7 @@ pub fn parse_meta_from_source_str(
cfg
:
ast
::
CrateConfig
,
sess
:
@
mut
ParseSess
)
->
@
ast
::
MetaItem
{
let
p
=
new_parser_from_source_str
(
sess
,
cfg
,
name
,
source
);
let
mut
p
=
new_parser_from_source_str
(
sess
,
cfg
,
name
,
source
);
maybe_aborted
(
p
.parse_meta_item
(),
p
)
}
...
...
@@ -169,7 +154,7 @@ pub fn parse_stmt_from_source_str(
attrs
:
~
[
ast
::
Attribute
],
sess
:
@
mut
ParseSess
)
->
@
ast
::
Stmt
{
let
p
=
new_parser_from_source_str
(
let
mut
p
=
new_parser_from_source_str
(
sess
,
cfg
,
name
,
...
...
@@ -184,7 +169,7 @@ pub fn parse_tts_from_source_str(
cfg
:
ast
::
CrateConfig
,
sess
:
@
mut
ParseSess
)
->
~
[
ast
::
token_tree
]
{
let
p
=
new_parser_from_source_str
(
let
mut
p
=
new_parser_from_source_str
(
sess
,
cfg
,
name
,
...
...
@@ -201,15 +186,15 @@ pub fn parse_tts_from_source_str(
// consumed all of the input before returning the function's
// result.
pub
fn
parse_from_source_str
<
T
>
(
f
:
|
&
Parser
|
->
T
,
f
:
|
&
mut
Parser
|
->
T
,
name
:
@
str
,
ss
:
codemap
::
FileSubstr
,
source
:
@
str
,
cfg
:
ast
::
CrateConfig
,
sess
:
@
mut
ParseSess
)
->
T
{
let
p
=
new_parser_from_source_substr
(
sess
,
cfg
,
name
,
ss
,
source
);
let
r
=
f
(
&
p
);
let
mut
p
=
new_parser_from_source_substr
(
sess
,
cfg
,
name
,
ss
,
source
);
let
r
=
f
(
&
mut
p
);
if
!
p
.reader
.is_eof
()
{
p
.reader
.fatal
(
~
"expected end-of-string"
);
}
...
...
@@ -326,7 +311,7 @@ pub fn filemap_to_tts(sess: @mut ParseSess, filemap: @FileMap)
// parsing tt's probably shouldn't require a parser at all.
let
cfg
=
~
[];
let
srdr
=
lexer
::
new_string_reader
(
sess
.span_diagnostic
,
filemap
);
let
p1
=
Parser
(
sess
,
cfg
,
srdr
as
@
mut
reader
);
let
mut
p1
=
Parser
(
sess
,
cfg
,
srdr
as
@
mut
reader
);
p1
.parse_all_token_trees
()
}
...
...
@@ -339,7 +324,7 @@ pub fn tts_to_parser(sess: @mut ParseSess,
}
// abort if necessary
pub
fn
maybe_aborted
<
T
>
(
result
:
T
,
p
:
Parser
)
->
T
{
pub
fn
maybe_aborted
<
T
>
(
result
:
T
,
mut
p
:
Parser
)
->
T
{
p
.abort_if_errors
();
result
}
...
...
src/libsyntax/parse/obsolete.rs
浏览文件 @
f499d365
...
...
@@ -57,23 +57,23 @@ fn iter_bytes(&self, lsb0: bool, f: to_bytes::Cb) -> bool {
pub
trait
ParserObsoleteMethods
{
/// Reports an obsolete syntax non-fatal error.
fn
obsolete
(
&
self
,
sp
:
Span
,
kind
:
ObsoleteSyntax
);
fn
obsolete
(
&
mut
self
,
sp
:
Span
,
kind
:
ObsoleteSyntax
);
// Reports an obsolete syntax non-fatal error, and returns
// a placeholder expression
fn
obsolete_expr
(
&
self
,
sp
:
Span
,
kind
:
ObsoleteSyntax
)
->
@
Expr
;
fn
report
(
&
self
,
fn
obsolete_expr
(
&
mut
self
,
sp
:
Span
,
kind
:
ObsoleteSyntax
)
->
@
Expr
;
fn
report
(
&
mut
self
,
sp
:
Span
,
kind
:
ObsoleteSyntax
,
kind_str
:
&
str
,
desc
:
&
str
);
fn
token_is_obsolete_ident
(
&
self
,
ident
:
&
str
,
token
:
&
Token
)
->
bool
;
fn
is_obsolete_ident
(
&
self
,
ident
:
&
str
)
->
bool
;
fn
eat_obsolete_ident
(
&
self
,
ident
:
&
str
)
->
bool
;
fn
token_is_obsolete_ident
(
&
mut
self
,
ident
:
&
str
,
token
:
&
Token
)
->
bool
;
fn
is_obsolete_ident
(
&
mut
self
,
ident
:
&
str
)
->
bool
;
fn
eat_obsolete_ident
(
&
mut
self
,
ident
:
&
str
)
->
bool
;
}
impl
ParserObsoleteMethods
for
Parser
{
/// Reports an obsolete syntax non-fatal error.
fn
obsolete
(
&
self
,
sp
:
Span
,
kind
:
ObsoleteSyntax
)
{
fn
obsolete
(
&
mut
self
,
sp
:
Span
,
kind
:
ObsoleteSyntax
)
{
let
(
kind_str
,
desc
)
=
match
kind
{
ObsoleteSwap
=>
(
"swap"
,
...
...
@@ -158,12 +158,12 @@ fn obsolete(&self, sp: Span, kind: ObsoleteSyntax) {
// Reports an obsolete syntax non-fatal error, and returns
// a placeholder expression
fn
obsolete_expr
(
&
self
,
sp
:
Span
,
kind
:
ObsoleteSyntax
)
->
@
Expr
{
fn
obsolete_expr
(
&
mut
self
,
sp
:
Span
,
kind
:
ObsoleteSyntax
)
->
@
Expr
{
self
.obsolete
(
sp
,
kind
);
self
.mk_expr
(
sp
.lo
,
sp
.hi
,
ExprLit
(
@
respan
(
sp
,
lit_nil
)))
}
fn
report
(
&
self
,
fn
report
(
&
mut
self
,
sp
:
Span
,
kind
:
ObsoleteSyntax
,
kind_str
:
&
str
,
...
...
@@ -176,7 +176,7 @@ fn report(&self,
}
}
fn
token_is_obsolete_ident
(
&
self
,
ident
:
&
str
,
token
:
&
Token
)
fn
token_is_obsolete_ident
(
&
mut
self
,
ident
:
&
str
,
token
:
&
Token
)
->
bool
{
match
*
token
{
token
::
IDENT
(
sid
,
_
)
=>
{
...
...
@@ -186,11 +186,11 @@ fn token_is_obsolete_ident(&self, ident: &str, token: &Token)
}
}
fn
is_obsolete_ident
(
&
self
,
ident
:
&
str
)
->
bool
{
fn
is_obsolete_ident
(
&
mut
self
,
ident
:
&
str
)
->
bool
{
self
.token_is_obsolete_ident
(
ident
,
self
.token
)
}
fn
eat_obsolete_ident
(
&
self
,
ident
:
&
str
)
->
bool
{
fn
eat_obsolete_ident
(
&
mut
self
,
ident
:
&
str
)
->
bool
{
if
self
.is_obsolete_ident
(
ident
)
{
self
.bump
();
true
...
...
src/libsyntax/parse/parser.rs
浏览文件 @
f499d365
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