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[Swift5] grammar fixes #4388

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[Swift5] grammar fixes #4388

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b96750b
add hashed labels to expression rule in JavaParser
Nov 7, 2024
4d16a1a
fix hashed labels names
Nov 7, 2024
6a4551d
add EOF to compilationUnit rule
Nov 8, 2024
93ad199
fix trees in tests
Nov 11, 2024
f0ff373
Merge branch 'antlr:master' into master
samatanna Jan 15, 2025
7784539
fix catch_pattern_list rule, add test
Jan 15, 2025
f3348cb
Merge branch 'antlr:master' into master
samatanna Jan 20, 2025
4b61256
add underscore to closure_parameter rule
Jan 20, 2025
f376d48
move UNDERSCORE in lexer to use UNDERSCORE token in grammar
Jan 21, 2025
0877cfb
minor spelling fix
Jan 23, 2025
464f891
spelling fix for SwiftSupport.cpp
Jan 23, 2025
aca468c
fix '?' token ambiguity, add STRUCT to identifier rule
Jan 31, 2025
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3 changes: 2 additions & 1 deletion swift/swift5/Swift5Lexer.g4
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Original file line number Diff line number Diff line change
Expand Up @@ -151,6 +151,8 @@ HASH_IMAGE_LITERAL : '#imageLiteral';
GETTER : 'getter';
SETTER : 'setter';

UNDERSCORE : '_';

Identifier:
Identifier_head Identifier_characters?
| Implicit_parameter_name
Expand Down Expand Up @@ -249,7 +251,6 @@ COLON : ':';
SEMI : ';';
LT : '<';
GT : '>';
UNDERSCORE : '_';
BANG : '!';
QUESTION : '?';
AT : '@';
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3 changes: 2 additions & 1 deletion swift/swift5/Swift5Parser.g4
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Expand Up @@ -1186,7 +1186,7 @@ closure_parameter_list
;

closure_parameter
: closure_parameter_name = identifier (type_annotation range_operator?)?
: UNDERSCORE? closure_parameter_name = identifier (type_annotation range_operator?)?
;

capture_list
Expand Down Expand Up @@ -1573,6 +1573,7 @@ identifier
)
| Identifier
| BACKTICK (keyword | Identifier | DOLLAR) BACKTICK
| UNDERSCORE
;

identifier_list
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11 changes: 11 additions & 0 deletions swift/swift5/examples/Functions and Closures/Contents.swift
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Expand Up @@ -98,6 +98,17 @@ print(mappedNumbers)
let sortedNumbers = numbers.sorted { $0 > $1 }
print(sortedNumbers)

// : Accepts trailing closure with 2 string parameters and call it
func printTwoStrings(_ closure: (String, String) -> Void) {
closure("Hello", "World")
}

//: Closure parameter name with an underscore before (closures don't have external parameter names, but underscore is allowed)
printTwoStrings { (_ x: String, _ y: String) in
print(x, y)
}




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