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rustc: Extract comman parts of view parsing

This commit is contained in:
Brian Anderson 2012-01-15 16:25:31 -08:00
parent 16462a77b0
commit 17585cc47e
1 changed files with 13 additions and 7 deletions
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20
src/comp/syntax/parse/parser.rs
View File

@ -1630,8 +1630,8 @@ fn parse_block_no_value(p: parser) -> ast::blk {
// necessary, and this should take a qualifier. // necessary, and this should take a qualifier.
// some blocks start with "#{"... // some blocks start with "#{"...
fn parse_block_tail(p: parser, lo: uint, s: ast::blk_check_mode) -> ast::blk { fn parse_block_tail(p: parser, lo: uint, s: ast::blk_check_mode) -> ast::blk {
let view_items = [], stmts = [], expr = none; let stmts = [], expr = none;
while is_word(p, "import") { view_items += [parse_view_item(p)]; } let view_items = parse_view_import_only(p);
while p.token != token::RBRACE { while p.token != token::RBRACE {
alt p.token { alt p.token {
token::SEMI. { token::SEMI. {
@ -2378,15 +2378,21 @@ fn is_view_item(p: parser) -> bool {
} }
fn parse_view(p: parser) -> [@ast::view_item] { fn parse_view(p: parser) -> [@ast::view_item] {
let items: [@ast::view_item] = []; parse_view_while(p, is_view_item)
while is_view_item(p) { items += [parse_view_item(p)]; } }
fn parse_view_import_only(p: parser) -> [@ast::view_item] {
parse_view_while(p, bind is_word(_, "import"))
}
fn parse_view_while(p: parser, f: fn@(parser) -> bool) -> [@ast::view_item] {
let items = [];
while f(p) { items += [parse_view_item(p)]; }
ret items; ret items;
} }
fn parse_native_view(p: parser) -> [@ast::view_item] { fn parse_native_view(p: parser) -> [@ast::view_item] {
let items: [@ast::view_item] = []; parse_view_while(p, is_view_item)
while is_view_item(p) { items += [parse_view_item(p)]; }
ret items;
} }
fn parse_crate_from_source_file(input: str, cfg: ast::crate_cfg, fn parse_crate_from_source_file(input: str, cfg: ast::crate_cfg,