Mercurial > vim
changeset 35478:a2ee620b375c
runtime(java): Optionally highlight parameterised types
Commit: https://github.com/vim/vim/commit/beb02ed674bc61f179c4ff71e93bdeeb44fe9c4e
Author: Aliaksei Budavei <0x000c70@gmail.com>
Date: Thu Jun 20 21:00:53 2024 +0200
runtime(java): Optionally highlight parameterised types
In the presence of parameterised types whose names begin
with a capital letter and end with a less-than sign "<" that
introduces a type argument or a list of comma-separated type
arguments, followed by a greater-than sign ">", a variable
"g:java_highlight_generics" can be defined to have some
components of such types uniformly coloured (by picking
highlight groups for javaGenericsC{1,2}, javaWildcardBound).
For example,
------------------------------------------------------------
java.io.InputStream stream = java.io.InputStream.nullInputStream();
java.util.function.Function<String,
java.util.function.BiFunction<String, String, String>> updater =
property -> (oldValue, newValue) -> oldValue;
java.util.logging.LogManager.getLogManager()
.updateConfiguration(stream, updater);
------------------------------------------------------------
Note that the diamond form and explicit type arguments do
not qualify for this kind of recognition.
For example,
------------------------------------------------------------
new java.util.HashSet<>().<String>toArray(new String[0]);
------------------------------------------------------------
References:
https://docs.oracle.com/javase/specs/jls/se21/html/jls-4.html#jls-4.5
https://docs.oracle.com/javase/specs/jls/se21/html/jls-15.html#jls-15.9
https://docs.oracle.com/javase/specs/jls/se21/html/jls-15.html#jls-15.12.2.1
closes: #15050
Signed-off-by: Aliaksei Budavei <0x000c70@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
| author | Christian Brabandt <cb@256bit.org> |
|---|---|
| date | Thu, 20 Jun 2024 21:15:07 +0200 |
| parents | 57f2462c738e |
| children | d71e3debb9ee |
| files | runtime/doc/syntax.txt runtime/syntax/java.vim runtime/syntax/testdir/dumps/java_generics_00.dump runtime/syntax/testdir/dumps/java_generics_01.dump runtime/syntax/testdir/dumps/java_generics_02.dump runtime/syntax/testdir/dumps/java_generics_03.dump runtime/syntax/testdir/dumps/java_generics_04.dump runtime/syntax/testdir/dumps/java_generics_05.dump runtime/syntax/testdir/dumps/java_generics_06.dump runtime/syntax/testdir/dumps/java_generics_07.dump runtime/syntax/testdir/dumps/java_generics_99.dump runtime/syntax/testdir/input/java_generics.java |
| diffstat | 12 files changed, 365 insertions(+), 11 deletions(-) [+] |
line wrap: on
line diff
--- a/runtime/doc/syntax.txt +++ b/runtime/doc/syntax.txt @@ -1,4 +1,4 @@ -*syntax.txt* For Vim version 9.1. Last change: 2024 Jun 17 +*syntax.txt* For Vim version 9.1. Last change: 2024 Jun 19 VIM REFERENCE MANUAL by Bram Moolenaar @@ -2014,7 +2014,7 @@ Check the javaid.vim file for a list of Function names are not highlighted, as the way to find functions depends on how you write Java code. The syntax file knows two possible ways to highlight -functions: +headers of function declarations: If you write function declarations that are consistently indented by either a tab, or a space . . . or eight space character(s), you may want to set > @@ -2032,10 +2032,14 @@ However, if you follow the Java guidelin supposed to be named (with respect to upper- and lowercase) and there is any amount of indentation, you may want to set > :let java_highlight_functions="style" -If neither setting does work for you, but you would still want function -declarations to be highlighted, create your own definitions by changing the -definitions in java.vim or by creating your own java.vim that includes the -original one and then adds the code to highlight functions. +If neither setting does work for you, but you would still want headers of +function declarations to be highlighted, modify the current syntax definitions +or compose new ones. + +Higher-order function types can be hard to parse by eye, so uniformly toning +down some of their components may be of value. Provided that such type names +conform to the Java naming guidelines, you may arrange it with > + :let java_highlight_generics=1 In Java 1.1 the functions System.out.println() and System.err.println() should only be used for debugging. Therefore it is possible to highlight debugging
--- a/runtime/syntax/java.vim +++ b/runtime/syntax/java.vim @@ -146,6 +146,30 @@ if s:module_info_cur_buf syn keyword javaModuleExternal to with endif +" Fancy parameterised types (JLS-17, §4.5). +" +" Note that false positives may elsewhere occur whenever an identifier +" is butted against a less-than operator. Cf. (X<Y) and (X < Y). +if exists("java_highlight_generics") + syn keyword javaWildcardBound contained extends super + + " Parameterised types are delegated to javaGenerics (s:ctx.gsg) and + " are not matched with javaTypeArgument. + exec 'syn match javaTypeArgument contained "' . s:ff.Engine('\%#=2', '') . '?\|\%(\<\%(b\%(oolean\|yte\)\|char\|short\|int\|long\|float\|double\)\[\]\|\%(\<\K\k*\>\.\)*\<' . s:ff.UpperCase('[$_[:upper:]]', '[^a-z0-9]') . '\k*\>\)\%(\[\]\)*"' + + for s:ctx in [{'dsg': 'javaDimExpr', 'gsg': 'javaGenerics', 'ghg': 'javaGenericsC1', 'csg': 'javaGenericsX', 'c': ''}, + \ {'dsg': 'javaDimExprX', 'gsg': 'javaGenericsX', 'ghg': 'javaGenericsC2', 'csg': 'javaGenerics', 'c': ' contained'}] + " Consider array creation expressions of reifiable types. + exec 'syn region ' . s:ctx.dsg . ' contained transparent matchgroup=' . s:ctx.ghg . ' start="\[" end="\]" nextgroup=' . s:ctx.dsg . ' skipwhite skipnl' + exec 'syn region ' . s:ctx.gsg . s:ctx.c . ' transparent matchgroup=' . s:ctx.ghg . ' start=/' . s:ff.Engine('\%#=2', '') . '\%(\<\K\k*\>\.\)*\<' . s:ff.UpperCase('[$_[:upper:]]', '[^a-z0-9]') . '\k*\><\%([[:space:]\n]*\%([?@]\|\<\%(b\%(oolean\|yte\)\|char\|short\|int\|long\|float\|double\)\[\]\|\%(\<\K\k*\>\.\)*\<' . s:ff.UpperCase('[$_[:upper:]]', '[^a-z0-9]') . '\k*\>\)\)\@=/ end=/>/ contains=' . s:ctx.csg . ',javaAnnotation,javaTypeArgument,javaWildcardBound,javaType,@javaClasses nextgroup=' . s:ctx.dsg . ' skipwhite skipnl' + endfor + + unlet s:ctx + hi def link javaWildcardBound Question + hi def link javaGenericsC1 javaFuncDef + hi def link javaGenericsC2 javaType +endif + if exists("java_highlight_java_lang_ids") let java_highlight_all=1 endif @@ -175,9 +199,15 @@ if exists("java_highlight_all") || exis exec 'syn match javaC_JavaLang "\%(\<ModuleLayer\.\)\@' . s:ff.Peek('12', '') . '<=\<Controller\>"' exec 'syn match javaC_JavaLang "\%(\<Runtime\.\)\@' . s:ff.Peek('8', '') . '<=\<Version\>"' exec 'syn match javaC_JavaLang "\%(\<System\.\)\@' . s:ff.Peek('7', '') . '<=\<LoggerFinder\>"' - exec 'syn match javaC_JavaLang "\%(\<Enum\.\)\@' . s:ff.Peek('5', '') . '<=\<EnumDesc\>"' - syn keyword javaC_JavaLang Boolean Character Class ClassLoader Compiler Double Float Integer Long Math Number Object Process Runtime SecurityManager String StringBuffer Thread ThreadGroup Byte Short Void InheritableThreadLocal Package RuntimePermission ThreadLocal StrictMath StackTraceElement Enum ProcessBuilder StringBuilder ClassValue Module ModuleLayer StackWalker Record + syn keyword javaC_JavaLang Boolean Character ClassLoader Compiler Double Float Integer Long Math Number Object Process Runtime SecurityManager String StringBuffer Thread ThreadGroup Byte Short Void Package RuntimePermission StrictMath StackTraceElement ProcessBuilder StringBuilder Module ModuleLayer StackWalker Record syn match javaC_JavaLang "\<System\>" " See javaDebug. + + if !exists("java_highlight_generics") + " The non-interface parameterised names of java.lang members. + exec 'syn match javaC_JavaLang "\%(\<Enum\.\)\@' . s:ff.Peek('5', '') . '<=\<EnumDesc\>"' + syn keyword javaC_JavaLang Class InheritableThreadLocal ThreadLocal Enum ClassValue + endif + " As of JDK 21, java.lang.Compiler is no more (deprecated in JDK 9). syn keyword javaLangDeprecated Compiler syn cluster javaClasses add=javaC_JavaLang @@ -217,7 +247,7 @@ if exists("java_space_errors") endif exec 'syn match javaUserLabel "^\s*\<\K\k*\>\%(\<default\>\)\@' . s:ff.Peek('7', '') . '<!\s*:"he=e-1' -syn region javaLabelRegion transparent matchgroup=javaLabel start="\<case\>" matchgroup=NONE end=":\|->" contains=javaLabelCastType,javaLabelNumber,javaCharacter,javaString,javaConstant,@javaClasses,javaLabelDefault,javaLabelVarType,javaLabelWhenClause +syn region javaLabelRegion transparent matchgroup=javaLabel start="\<case\>" matchgroup=NONE end=":\|->" contains=javaLabelCastType,javaLabelNumber,javaCharacter,javaString,javaConstant,@javaClasses,javaGenerics,javaLabelDefault,javaLabelVarType,javaLabelWhenClause syn region javaLabelRegion transparent matchgroup=javaLabel start="\<default\>\%(\s*\%(:\|->\)\)\@=" matchgroup=NONE end=":\|->" oneline " Consider grouped _default_ _case_ labels, i.e. " case null, default -> @@ -332,7 +362,7 @@ syn match javaSpecial "\\u\x\x\x\x" " Method declarations (JLS-17, §8.4.3, §8.4.4, §9.4). if exists("java_highlight_functions") - syn cluster javaFuncParams contains=javaAnnotation,@javaClasses,javaType,javaVarArg,javaComment,javaLineComment + syn cluster javaFuncParams contains=javaAnnotation,@javaClasses,javaGenerics,javaType,javaVarArg,javaComment,javaLineComment if java_highlight_functions =~# '^indent[1-8]\=$' let s:last = java_highlight_functions[-1 :] @@ -443,7 +473,7 @@ if exists("java_highlight_functions") " There is no recognition of expressions interspersed with comments " or of expressions whose parameterised parameter types are written " across multiple lines. - exec 'syn match javaLambdaDef "\k\@' . s:ff.Peek('4', '') . '<!([[:space:]\n]*\%(\%(@\%(\K\k*\.\)*\K\k*\>\%((\_.\{-1,})\)\{-,1}[[:space:]\n]\+\)*\%(final[[:space:]\n]\+\)\=\%(\<\K\k*\>\.\)*\<\K\k*\>\%(<[^(){}]*[[:space:]-]\@' . s:ff.Peek('1', '') . '<!>\)\=\%(\%(\%(\[\]\)\+\|\.\.\.\)\)\=[[:space:]\n]\+\<\K\k*\>\%(\[\]\)*\%(,[[:space:]\n]*\)\=\)\+)[[:space:]\n]*->" contains=javaAnnotation,javaParamModifier,javaLambdaVarType,javaType,@javaClasses,javaVarArg' + exec 'syn match javaLambdaDef "\k\@' . s:ff.Peek('4', '') . '<!([[:space:]\n]*\%(\%(@\%(\K\k*\.\)*\K\k*\>\%((\_.\{-1,})\)\{-,1}[[:space:]\n]\+\)*\%(final[[:space:]\n]\+\)\=\%(\<\K\k*\>\.\)*\<\K\k*\>\%(<[^(){}]*[[:space:]-]\@' . s:ff.Peek('1', '') . '<!>\)\=\%(\%(\%(\[\]\)\+\|\.\.\.\)\)\=[[:space:]\n]\+\<\K\k*\>\%(\[\]\)*\%(,[[:space:]\n]*\)\=\)\+)[[:space:]\n]*->" contains=javaAnnotation,javaParamModifier,javaLambdaVarType,javaType,@javaClasses,javaGenerics,javaVarArg' " Match: () -> " | (a[, b, ...]) -> exec 'syn match javaLambdaDef "\k\@' . s:ff.Peek('4', '') . '<!([[:space:]\n]*\%(\<\K\k*\>\%(,[[:space:]\n]*\)\=\)*)[[:space:]\n]*->"'
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new file mode 100644 --- /dev/null +++ b/runtime/syntax/testdir/input/java_generics.java @@ -0,0 +1,140 @@ +// VIM_TEST_SETUP let g:java_highlight_functions = 'style' +// VIM_TEST_SETUP let g:java_highlight_generics = 1 +// VIM_TEST_SETUP hi link javaGenericsC1 Todo +// VIM_TEST_SETUP hi link javaGenericsC2 Error + +import java.math.BigInteger; +import java.util.function.Consumer; +import java.util.function.Function; +import java.util.function.LongFunction; +import java.util.function.Predicate; + +class GenericsTests<T extends Number & Comparable<? super T>, U> +{ // JDK 21+. + static final Function<Function<Object, Object>, Object> PARTIAL = + GenericsTests.y0(); + static final Function<BigInteger, BigInteger> FACTORIAL_2000 = + GenericsTests.<BigInteger, BigInteger>y1() + .apply(f -> x -> (x.compareTo(BigInteger.ONE) < 1) + ? BigInteger.ONE + : x.multiply(f.apply(x.subtract(BigInteger.ONE)))); + + static <T1> Y0<T1> y0() + { + return (Function<T1, T1> f) -> f.apply( + GenericsTests.<T1>y0() + .apply(f)); + } + + static <T1, T2> Y1<T1, T2> y1() + { + return (Function<Function<T1, T2>, Function<T1, T2>> f) -> + (T1 x) -> f.apply(GenericsTests.<T1, T2>y1() + .apply(f)) + .apply(x); + } + + static<T> void noOp(T dummy) { } + + interface alpha<T> { } + + interface Y0<T1> extends Function<Function<T1, T1>, T1> { } + + interface Y1<T1, T2> extends Function<Function<Function<T1, T2>, + Function<T1, T2>>, + Function<T1, T2>> { } + + interface Stackable<E> extends Iterable<E> + { + boolean isEmpty(); + E peek(); + E pop(); + Stackable<E> popAll(Stackable<? super E> elements); + Stackable<E> popSome(Stackable<? super E> elements, + Predicate<? super E> filter); + Stackable<E> push(E element); + Stackable<E> pushAll(Iterable<? extends E> elements); + Stackable<E> pushSome(Iterable<? extends E> elements, + Predicate<? super E> filter); + Stackable<E> wind(Consumer<? super Stackable<E>> action); + } + + sealed interface Num<N extends Number> + { + int radix(); + N value(); + } + + record Bin<N extends Number>(N value) implements Num<N> + { + public int radix() { return 2; } + } + + record Dec<N extends Number>(N value) implements Num<N> + { + public int radix() { return 10; } + } + + record Hex<N extends Number>(N value) implements Num<N> + { + public int radix() { return 16; } + } + + record Oct<N extends Number>(N value) implements Num<N> + { + public int radix() { return 8; } + } + + static Num<Long> fromDecimal(long x, int radix) + { + record Pair(LongFunction<Num<Long>> a, + LongFunction<String> b) { } + final Pair p = switch (radix) { + case 2 -> new Pair(Bin::new, Long::toBinaryString); + case 8 -> new Pair(Oct::new, Long::toOctalString); + case 16 -> new Pair(Hex::new, Long::toHexString); + default -> new Pair(Dec::new, + y -> Long.toString(y)); + }; + return p.a().apply(Long.parseLong(p.b().apply(x), radix)); + } + + static long toDecimal(Num<Long> x) + { + return Long.parseLong(switch (x) { + case Bin<?>(Long b) -> Long.toBinaryString(b); + case Oct<?>(Long o) -> Long.toOctalString(o); + case Hex<?>(Long h) -> Long.toHexString(h); + default -> Long.toString(x.value()); + }, x.radix()); + } + + @java.lang.annotation.Target( + java.lang.annotation.ElementType.TYPE_USE) + @interface Taggable + { + String value() default ""; + } + + { + int N = 0, X = 1, Y = 2; + Predicate<T> f = y->N<y.intValue(); + Predicate<T> g = y->X<N&&(Integer)y>N; + boolean[] bb = { + X<N||N>Y, X < Y, X <Y, X <(Y), X<(Y), (X)<Y, + Double.isFinite(X<<Y), + X<=Y, X<(int)(byte)Y, X<~Y, X<-Y, X<+Y, + }; + Class<?> klass = GenericsTests.class; + Class< java.lang.Class<@Taggable("<>")int[][]> [] [] > + [ ] [ ] $ [ ] [ ]; + if (false) { new GenericsTests<>(); } + alpha<?> ao; + alpha<U> au; + alpha<alpha<U>> aau; + alpha<Y0<?>> ay0o; + alpha<Y0<U>> ay0u; + Y0<alpha<?>> y0ao; + Y0<alpha<U>> y0au; + } +}