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runtime(java): Improve the matching of contextual keywords

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- Recognise a _record_ contextual keyword.
- Recognise _non-sealed_, _sealed_, and _permits_ contextual
  keywords.
- Admit _$_ to keyword characters.
- Group _abstract_, _final_, _default_, _(non-)sealed_
  (apart from _(non-)sealed_, the incompossibility of these
  modifiers calls for attention).
- Remove another _synchronized_ keyword redefinition.

I have also replaced a function with an expression.  Before
patch 8.1.0515, it should have been declared :function! to
work with repeatable script sourcing; there is less to worry
about with an expression.

References:
https://openjdk.org/jeps/395 (Records)
https://openjdk.org/jeps/409 (Sealed Classes)
https://docs.oracle.com/javase/specs/jls/se21/html/jls-3.html#jls-3.8

closes: #14403

Signed-off-by: Aliaksei Budavei <0x000c70@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
This commit is contained in:
Aliaksei Budavei
2024-04-04 21:51:18 +02:00
committed by Christian Brabandt
parent 3fa8f7728a
commit 5ccdcc482e
6 changed files with 172 additions and 32 deletions
Download Patch File Download Diff File Expand all files Collapse all files

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|{| @73
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@4|/+0#0000e05&@1| |M|o|d|u|l|e|D|e|c|l|a|r|a|t|i|o|n|:| |m|o|d|u|l|e| |o|p|e|n|.| +0#0000000&@36
@4|v+0#00e0003&|o|i|d| +0#0000000&|m|o|d|u|l|e|(|)| @2|{| |O|b|j|e|c|t| |m|o|d|u|l|e| |=| |n+0#e000002&|u|l@1|;+0#0000000&| @4|w|h|e|n|(|)|;| |}| @17
@4|v+0#00e0003&|o|i|d| +0#0000000&|o|p|e|n|(|)| |{| |O|b|j|e|c|t| |o|p|e|n| |=| |n+0#e000002&|u|l@1|;+0#0000000&| @6|m|o|d|u|l|e|(|)|;| |}| @19
@4|/+0#0000e05&@1| |M|o|d|u|l|e|D|i|r|e|c|t|i|v|e|:| |e|x|p|o|r|t|s| |o|p|e|n|s| |p|r|o|v|i|d|e|s| |r|e|q|u|i|r|e|s| |t|o| |u|s|e|s| |w|i|t|h|.| +0#0000000&@5
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@4|v+0#00e0003&|o|i|d| +0#0000000&|o|p|e|n|s|(|)| @3|{| |O|b|j|e|c|t| |o|p|e|n|s| |=| |n+0#e000002&|u|l@1|;+0#0000000&| @5|e|x|p|o|r|t|s|(|)|;| |}| @14
@4|v+0#00e0003&|o|i|d| +0#0000000&|p|r|o|v|i|d|e|s|(|)| |{| |O|b|j|e|c|t| |p|r|o|v|i|d|e|s| |=| |n+0#e000002&|u|l@1|;+0#0000000&| @2|o|p|e|n|s|(|)|;| |}| @16
@4|v+0#00e0003&|o|i|d| +0#0000000&|r|e|q|u|i|r|e|s|(|)| |{| |O|b|j|e|c|t| |r|e|q|u|i|r|e|s| |=| |n+0#e000002&|u|l@1|;+0#0000000&| @2|p|r|o|v|i|d|e|s|(|)|;| |}| @13
@4|v+0#00e0003&|o|i|d| +0#0000000&|t|o|(|)| @2|{| |O|b|j|e|c|t| |t|o| |=| |n+0#e000002&|u|l@1|;+0#0000000&| @4|r|e|q|u|i|r|e|s|(|)|;| |}| @21
@4|v+0#00e0003&|o|i|d| +0#0000000&|u|s|e|s|(|)| |{| |O|b|j|e|c|t| |u|s|e|s| |=| |n+0#e000002&|u|l@1|;+0#0000000&| @6|t|o|(|)|;| |}| @23
@4|v+0#00e0003&|o|i|d| +0#0000000&|w|i|t|h|(|)| |{| |O|b|j|e|c|t| |w|i|t|h| |=| |n+0#e000002&|u|l@1|;+0#0000000&| @6|u|s|e|s|(|)|;| |}| @21
@4|/+0#0000e05&@1| |R|e|q|u|i|r|e|s|M|o|d|i|f|i|e|r|:| |t|r|a|n|s|i|t|i|v|e|.| +0#0000000&@38
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@4|/+0#0000e05&@1| |L|o|c|a|l|V|a|r|i|a|b|l|e|T|y|p|e| ||| |L|a|m|b|d|a|P|a|r|a|m|e|t|e|r|T|y|p|e|:| |v|a|r|.| +0#0000000&@22
@4|v+0#00e0003&|o|i|d| +0#0000000&|v|a|r|(|)| @1|{| |v+0#af5f00255&|a|r| +0#0000000&|v+0#af5f00255&|a|r| +0#0000000&|=| |n+0#af5f00255&|e|w| +0#0000000&|O|b|j|e|c|t|(|)|;| @2|t|r|a|n|s|i|t|i|v|e|(|)|;| |}| @15
@57|1|,|1| @10|T|o|p|

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@4|v+0#00e0003&|o|i|d| +0#0000000&|w|i|t|h|(|)| |{| |O|b|j|e|c|t| |w|i|t|h| |=| |n+0#e000002&|u|l@1|;+0#0000000&| @6|u|s|e|s|(|)|;| |}| @21
@4|/+0#0000e05&@1| |R|e|q|u|i|r|e|s|M|o|d|i|f|i|e|r|:| |t|r|a|n|s|i|t|i|v|e|.| +0#0000000&@38
@4|v+0#00e0003&|o|i|d| +0#0000000&|t|r|a|n|s|i|t|i|v|e|(|)| |{| |O|b|j|e|c|t| |t|r|a|n|s|i|t|i|v|e| |=| |n+0#e000002&|u|l@1|;+0#0000000&| @2|w|i|t|h|(|)|;| |}| @13
@4|/+0#0000e05&@1| |L|o|c|a|l|V|a|r|i|a|b|l|e|T|y|p|e| ||| |L|a|m|b|d|a|P|a|r|a|m|e|t|e|r|T|y|p|e|:| |v|a|r|.| +0#0000000&@22
@4>v+0#00e0003&|o|i|d| +0#0000000&|v|a|r|(|)| @1|{| |v+0#af5f00255&|a|r| +0#0000000&|v+0#af5f00255&|a|r| +0#0000000&|=| |n+0#af5f00255&|e|w| +0#0000000&|O|b|j|e|c|t|(|)|;| @2|t|r|a|n|s|i|t|i|v|e|(|)|;| |}| @15
@4|/+0#0000e05&@1| |Y|i|e|l|d|S|t|a|t|e|m|e|n|t|:| |y|i|e|l|d| |(|s|e@1| |j|a|v|a|_|s|w|i|t|c|h|.|j|a|v|a|)|.| +0#0000000&@22
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@4|/+0#0000e05&@1| |G|u|a|r|d|:| |w|h|e|n| |(|s|e@1| |j|a|v|a|_|s|w|i|t|c|h|.|j|a|v|a|)|.| +0#0000000&@32
@4|v+0#00e0003&|o|i|d| +0#0000000&|w|h|e|n|(|)| |{| |O|b|j|e|c|t| |w|h|e|n| |=| |n+0#e000002&|u|l@1|;+0#0000000&| @6|s|e|a|l|e|d|(|)|;| |}| @19
@75
@4|s+0#4040ff13&|e|a|l|e|d| +0#0000000&|i+0#00e0003&|n|t|e|r|f|a|c|e| +0#0000000&|I|1| |p+0#00e0003&|e|r|m|i|t|s| +0#0000000&|C|1|,| |I|3| |{| |}| @32
@4|s+0#4040ff13&|e|a|l|e|d| +0#0000000&|i+0#00e0003&|n|t|e|r|f|a|c|e| +0#0000000&|I|2| |p+0#00e0003&|e|r|m|i|t|s| +0#0000000&|C|1|,| |I|3| |{| |}| @32
@4|n+0#4040ff13&|o|n|-|s|e|a|l|e|d| +0#0000000&|i+0#00e0003&|n|t|e|r|f|a|c|e| +0#0000000&|I|3| |e+0#00e0003&|x|t|e|n|d|s| +0#0000000&|I|1|,| |I|2| |{| |}| @28
@57|1|9|,|2|-|5| @7|4@1|%|

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| +0&#ffffff0@3|n+0#4040ff13&|o|n|-|s|e|a|l|e|d| +0#0000000&|i+0#00e0003&|n|t|e|r|f|a|c|e| +0#0000000&|I|3| |e+0#00e0003&|x|t|e|n|d|s| +0#0000000&|I|1|,| |I|2| |{| |}| @28
@4|i+0#00e0003&|n|t|e|r|f|a|c|e| +0#0000000&|I|4| |e+0#00e0003&|x|t|e|n|d|s| +0#0000000&|I|3| |{| |}| @43
@75
@4|a+0#4040ff13&|b|s|t|r|a|c|t| +0#0000000&|s+0#4040ff13&|e|a|l|e|d| +0#0000000&|c+0#00e0003&|l|a|s@1| +0#0000000&|C|1| |i+0#00e0003&|m|p|l|e|m|e|n|t|s| +0#0000000&|I|1|,| |I|2| |p+0#00e0003&|e|r|m|i|t|s| +0#0000000&|C|2|,| |C|3| |{| |}| @9
@4|a+0#4040ff13&|b|s|t|r|a|c|t| +0#0000000&|n+0#4040ff13&|o|n|-|s|e|a|l|e|d| +0#0000000&|c+0#00e0003&|l|a|s@1| +0#0000000&|C|2| |e+0#00e0003&|x|t|e|n|d|s| +0#0000000&|C|1| |{| |}| @27
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@75
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|}| @73
|~+0#4040ff13&| @73
|~| @73
| +0#0000000&@56|3|7|,|2|-|5| @7|B|o|t|

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| +0&#ffffff0@3|s+0#4040ff13&|e|a|l|e|d| +0#0000000&|i+0#00e0003&|n|t|e|r|f|a|c|e| +0#0000000&|I|1| |p+0#00e0003&|e|r|m|i|t|s| +0#0000000&|C|1|,| |I|3| |{| |}| @32
@4|s+0#4040ff13&|e|a|l|e|d| +0#0000000&|i+0#00e0003&|n|t|e|r|f|a|c|e| +0#0000000&|I|2| |p+0#00e0003&|e|r|m|i|t|s| +0#0000000&|C|1|,| |I|3| |{| |}| @32
@4|n+0#4040ff13&|o|n|-|s|e|a|l|e|d| +0#0000000&|i+0#00e0003&|n|t|e|r|f|a|c|e| +0#0000000&|I|3| |e+0#00e0003&|x|t|e|n|d|s| +0#0000000&|I|1|,| |I|2| |{| |}| @28
@4|i+0#00e0003&|n|t|e|r|f|a|c|e| +0#0000000&|I|4| |e+0#00e0003&|x|t|e|n|d|s| +0#0000000&|I|3| |{| |}| @43
@75
@4|a+0#4040ff13&|b|s|t|r|a|c|t| +0#0000000&|s+0#4040ff13&|e|a|l|e|d| +0#0000000&|c+0#00e0003&|l|a|s@1| +0#0000000&|C|1| |i+0#00e0003&|m|p|l|e|m|e|n|t|s| +0#0000000&|I|1|,| |I|2| |p+0#00e0003&|e|r|m|i|t|s| +0#0000000&|C|2|,| |C|3| |{| |}| @9
@4|a+0#4040ff13&|b|s|t|r|a|c|t| +0#0000000&|n+0#4040ff13&|o|n|-|s|e|a|l|e|d| +0#0000000&|c+0#00e0003&|l|a|s@1| +0#0000000&|C|2| |e+0#00e0003&|x|t|e|n|d|s| +0#0000000&|C|1| |{| |}| @27
@4|f+0#4040ff13&|i|n|a|l| +0#0000000&|c+0#00e0003&|l|a|s@1| +0#0000000&|C|3| |e+0#00e0003&|x|t|e|n|d|s| +0#0000000&|C|1| |i+0#00e0003&|m|p|l|e|m|e|n|t|s| +0#0000000&|I|3| |{| |}| @27
@4|c+0#00e0003&|l|a|s@1| +0#0000000&|C|4| |e+0#00e0003&|x|t|e|n|d|s| +0#0000000&|C|2| |{| |}| @47
@75
@4|r+0#00e0003&|e|c|o|r|d| +0#0000000&|R|(|)| |i+0#00e0003&|m|p|l|e|m|e|n|t|s| +0#0000000&|I|3| |{| |}| @42
@4|e+0#00e0003&|n|u|m| +0#0000000&|E| |i+0#00e0003&|m|p|l|e|m|e|n|t|s| +0#0000000&|I|3| |{| |I|N|S|T|A|N|C|E| |}| @37
@75
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>}| @73
@57|4|8|,|1| @9|B|o|t|

48
runtime/syntax/testdir/input/java_contextual_keywords.java Normal file
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class ContextualKeywordsTests // See JLS, §3.9 Keywords.
{
private ContextualKeywordsTests() { throw new Error(); }
// ModuleDeclaration: module open.
void module() { Object module = null; when(); }
void open() { Object open = null; module(); }
// ModuleDirective: exports opens provides requires to uses with.
void exports() { Object exports = null; open(); }
void opens() { Object opens = null; exports(); }
void provides() { Object provides = null; opens(); }
void requires() { Object requires = null; provides(); }
void to() { Object to = null; requires(); }
void uses() { Object uses = null; to(); }
void with() { Object with = null; uses(); }
// RequiresModifier: transitive.
void transitive() { Object transitive = null; with(); }
// LocalVariableType | LambdaParameterType: var.
void var() { var var = new Object(); transitive(); }
// YieldStatement: yield (see java_switch.java).
void yield() { Object yield = null; var(); }
// RecordDeclaration: record.
void record() { Object record = null; this.yield(); }
// Normal{Class,Interface}Declaration: non-sealed permits sealed.
void permits() { Object permits = null; record(); }
void sealed() { Object sealed = null; permits(); }
// Guard: when (see java_switch.java).
void when() { Object when = null; sealed(); }
sealed interface I1 permits C1, I3 { }
sealed interface I2 permits C1, I3 { }
non-sealed interface I3 extends I1, I2 { }
interface I4 extends I3 { }
abstract sealed class C1 implements I1, I2 permits C2, C3 { }
abstract non-sealed class C2 extends C1 { }
final class C3 extends C1 implements I3 { }
class C4 extends C2 { }
record R() implements I3 { }
enum E implements I3 { INSTANCE }
static <T> I<T> i1() { return (var var) -> var; }
static <T> I<T> i2() { return (T var) -> var; }
static <T> I<T> i3() { return (var) -> var; }
static <T> I<T> i4() { return var -> var; }
interface I<T> { T i(T i); default I<T> self() { return this; } }
}