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Support if let match guards

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This commit is contained in:
Jonas Schievink 2021-08-13 00:21:42 +02:00
parent 4466e07fd7
commit d568e7686a
10 changed files with 90 additions and 27 deletions
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3
crates/syntax/src/ast/generated/nodes.rs
View file

@ -1021,6 +1021,9 @@ pub struct MatchGuard {
}
impl MatchGuard {
pub fn if_token(&self) -> Option<SyntaxToken> { support::token(&self.syntax, T![if]) }
pub fn let_token(&self) -> Option<SyntaxToken> { support::token(&self.syntax, T![let]) }
pub fn pat(&self) -> Option<Pat> { support::child(&self.syntax) }
pub fn eq_token(&self) -> Option<SyntaxToken> { support::token(&self.syntax, T![=]) }
pub fn expr(&self) -> Option<Expr> { support::child(&self.syntax) }
}
#[derive(Debug, Clone, PartialEq, Eq, Hash)]

48
crates/syntax/test_data/parser/inline/ok/0118_match_guard.rast
View file

@ -1,5 +1,5 @@
SOURCE_FILE@0..58
FN@0..57
SOURCE_FILE@0..92
FN@0..91
FN_KW@0..2 "fn"
WHITESPACE@2..3 " "
NAME@3..6
@ -8,17 +8,17 @@ SOURCE_FILE@0..58
L_PAREN@6..7 "("
R_PAREN@7..8 ")"
WHITESPACE@8..9 " "
BLOCK_EXPR@9..57
BLOCK_EXPR@9..91
L_CURLY@9..10 "{"
WHITESPACE@10..15 "\n "
MATCH_EXPR@15..55
MATCH_EXPR@15..89
MATCH_KW@15..20 "match"
WHITESPACE@20..21 " "
TUPLE_EXPR@21..23
L_PAREN@21..22 "("
R_PAREN@22..23 ")"
WHITESPACE@23..24 " "
MATCH_ARM_LIST@24..55
MATCH_ARM_LIST@24..89
L_CURLY@24..25 "{"
WHITESPACE@25..34 "\n "
MATCH_ARM@34..49
@ -40,8 +40,36 @@ SOURCE_FILE@0..58
L_PAREN@46..47 "("
R_PAREN@47..48 ")"
COMMA@48..49 ","
WHITESPACE@49..54 "\n "
R_CURLY@54..55 "}"
WHITESPACE@55..56 "\n"
R_CURLY@56..57 "}"
WHITESPACE@57..58 "\n"
WHITESPACE@49..58 "\n "
MATCH_ARM@58..83
WILDCARD_PAT@58..59
UNDERSCORE@58..59 "_"
WHITESPACE@59..60 " "
MATCH_GUARD@60..76
IF_KW@60..62 "if"
WHITESPACE@62..63 " "
LET_KW@63..66 "let"
WHITESPACE@66..67 " "
IDENT_PAT@67..70
NAME@67..70
IDENT@67..70 "foo"
WHITESPACE@70..71 " "
EQ@71..72 "="
WHITESPACE@72..73 " "
PATH_EXPR@73..76
PATH@73..76
PATH_SEGMENT@73..76
NAME_REF@73..76
IDENT@73..76 "bar"
WHITESPACE@76..77 " "
FAT_ARROW@77..79 "=>"
WHITESPACE@79..80 " "
TUPLE_EXPR@80..82
L_PAREN@80..81 "("
R_PAREN@81..82 ")"
COMMA@82..83 ","
WHITESPACE@83..88 "\n "
R_CURLY@88..89 "}"
WHITESPACE@89..90 "\n"
R_CURLY@90..91 "}"
WHITESPACE@91..92 "\n"

1
crates/syntax/test_data/parser/inline/ok/0118_match_guard.rs
View file

@ -1,5 +1,6 @@
fn foo() {
match () {
_ if foo => (),
_ if let foo = bar => (),
}
}