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IDEA-323910 Implement parser for "JEP 443: Unnamed Patterns and Variables (Preview)" IDEA-323960 Support error highlighting for unnamed variables (JEP 443) GitOrigin-RevId: 1b9ee424063dfd4d32c2215fc8b0a9838dbdcd95
42 lines
3.0 KiB
Java
42 lines
3.0 KiB
Java
import java.util.function.*;
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public class UnnamedVariables {
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void testParameter(<error descr="Unnamed patterns and variables are not supported at language level '9'">int _</error>, <error descr="Unnamed patterns and variables are not supported at language level '9'">String _</error>) {
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System.out.println(<error descr="Since Java 9, '_' is a keyword, and may not be used as an identifier">_</error>);
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}
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<error descr="Unnamed patterns and variables are not supported at language level '9'">int _ = 123;</error>
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String s = <error descr="Since Java 9, '_' is a keyword, and may not be used as an identifier">_</error>;
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void testLambda() {
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Consumer<String> consumer = <error descr="Unnamed patterns and variables are not supported at language level '9'">_</error> -> System.out.println("Hello");
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Consumer<String> consumer2 = <error descr="Unnamed patterns and variables are not supported at language level '9'">_</error> -> System.out.println(<error descr="Since Java 9, '_' is a keyword, and may not be used as an identifier">_</error>);
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Consumer<String> consumer3 = <error descr="Unnamed patterns and variables are not supported at language level '9'">_</error> -> System.out.println(<error descr="Since Java 9, '_' is a keyword, and may not be used as an identifier">_</error>.trim());
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Consumer<String> consumer4 = <error descr="Unnamed patterns and variables are not supported at language level '9'">_</error> -> {
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<error descr="Cannot resolve symbol 'var'" textAttributesKey="WRONG_REFERENCES_ATTRIBUTES">var</error> v = <error descr="Since Java 9, '_' is a keyword, and may not be used as an identifier">_</error>;
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System.out.println(v.<error descr="Cannot resolve method 'trim()'" textAttributesKey="WRONG_REFERENCES_ATTRIBUTES">trim</error>());
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};
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BiConsumer<String, String> consumer5 = (<error descr="Unnamed patterns and variables are not supported at language level '9'">_</error>,<error descr="Unnamed patterns and variables are not supported at language level '9'">_</error>) -> {};
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}
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void testLocal() {
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<error descr="Unnamed patterns and variables are not supported at language level '9'">int _ = 10;</error>
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<error descr="Unnamed patterns and variables are not supported at language level '9'">int _ = 20;</error>
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for (<error descr="Unnamed patterns and variables are not supported at language level '9'">int _ = 1;</error>;) {}
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}
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void testCatch() {
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try {
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System.out.println();
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}
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catch (<error descr="Unnamed patterns and variables are not supported at language level '9'">Exception _</error>) {
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System.out.println("ignore");
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}
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catch (<error descr="Unnamed patterns and variables are not supported at language level '9'">Error _</error>) {
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<error descr="Unnamed patterns and variables are not supported at language level '9'">int _ = 1;</error>
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for(<error descr="Unnamed patterns and variables are not supported at language level '9'">int _</error>:new int[10]) {
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System.out.println("oops");
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}
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}
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}
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} |