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https://issues.apache.org/jira/browse/GROOVY-8078?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17561974#comment-17561974
]
Paul King edited comment on GROOVY-8078 at 7/4/22 2:41 AM:
-----------------------------------------------------------
Just an update. Recent Groovy versions support most of these variants (but not
all):
{noformat}
Groovy Shell (4.0.3, JVM: 1.8.0_282)
Type ':help' or ':h' for help.
-------------------------------------------------------------------------------
groovy:000> - 3
===> -3
groovy:000> + 3
===> 3
groovy:000> + -3
===> -3
groovy:000> + +3
===> 3
groovy:000> -- 3
===> 2
groovy:000> ++ 4
===> 5
groovy:000> -3
===> -3
groovy:000> +4
===> 4
groovy:000> + + 4
===> 4
groovy:000> - +4
===> -4
groovy:000> - - 5
ERROR org.codehaus.groovy.GroovyBugError:
BUG! Failed to find the original number literal text: -5
at org.apache.groovy.parser.antlr4.AstBuilder.visitUnaryAddExprAlt
(AstBuilder.java:3301)
at org.apache.groovy.parser.antlr4.AstBuilder.visitUnaryAddExprAlt
(AstBuilder.java:378)
at
org.apache.groovy.parser.antlr4.GroovyParser$UnaryAddExprAltContext.accept
(GroovyParser.java:8690)
at groovyjarjarantlr4.v4.runtime.tree.AbstractParseTreeVisitor.visit
(AbstractParseTreeVisitor.java:20)
at org.apache.groovy.parser.antlr4.AstBuilder.visit
(AstBuilder.java:4703)
at org.apache.groovy.parser.antlr4.AstBuilder.visitCommandExpression
(AstBuilder.java:2548)
at org.apache.groovy.parser.antlr4.AstBuilder.visitCommandExprAlt
(AstBuilder.java:2533)
at org.apache.groovy.parser.antlr4.AstBuilder.visitCommandExprAlt
(AstBuilder.java:378)
at
org.apache.groovy.parser.antlr4.GroovyParser$CommandExprAltContext.accept
(GroovyParser.java:8270)
at
groovyjarjarantlr4.v4.runtime.tree.AbstractParseTreeVisitor.visitChildren
(AbstractParseTreeVisitor.java:48) {noformat}
was (Author: paulk):
Just an update. Recent versions support mot of these variants (but not all):
{noformat}
Groovy Shell (4.0.3, JVM: 1.8.0_282)
Type ':help' or ':h' for help.
-------------------------------------------------------------------------------
groovy:000> - 3
===> -3
groovy:000> + 3
===> 3
groovy:000> + -3
===> -3
groovy:000> + +3
===> 3
groovy:000> -- 3
===> 2
groovy:000> ++ 4
===> 5
groovy:000> -3
===> -3
groovy:000> +4
===> 4
groovy:000> + + 4
===> 4
groovy:000> - +4
===> -4
groovy:000> - - 5
ERROR org.codehaus.groovy.GroovyBugError:
BUG! Failed to find the original number literal text: -5
at org.apache.groovy.parser.antlr4.AstBuilder.visitUnaryAddExprAlt
(AstBuilder.java:3301)
at org.apache.groovy.parser.antlr4.AstBuilder.visitUnaryAddExprAlt
(AstBuilder.java:378)
at
org.apache.groovy.parser.antlr4.GroovyParser$UnaryAddExprAltContext.accept
(GroovyParser.java:8690)
at groovyjarjarantlr4.v4.runtime.tree.AbstractParseTreeVisitor.visit
(AbstractParseTreeVisitor.java:20)
at org.apache.groovy.parser.antlr4.AstBuilder.visit
(AstBuilder.java:4703)
at org.apache.groovy.parser.antlr4.AstBuilder.visitCommandExpression
(AstBuilder.java:2548)
at org.apache.groovy.parser.antlr4.AstBuilder.visitCommandExprAlt
(AstBuilder.java:2533)
at org.apache.groovy.parser.antlr4.AstBuilder.visitCommandExprAlt
(AstBuilder.java:378)
at
org.apache.groovy.parser.antlr4.GroovyParser$CommandExprAltContext.accept
(GroovyParser.java:8270)
at
groovyjarjarantlr4.v4.runtime.tree.AbstractParseTreeVisitor.visitChildren
(AbstractParseTreeVisitor.java:48) {noformat}
> Double unary - and + not supported ?
> ------------------------------------
>
> Key: GROOVY-8078
> URL: https://issues.apache.org/jira/browse/GROOVY-8078
> Project: Groovy
> Issue Type: Bug
> Components: Compiler
> Affects Versions: 2.4.8
> Environment: Windows (but probably generic)
> Reporter: Tomas Rokicki
> Priority: Minor
>
> You cannot use a double unary - or +, or combine them:
> groovy:000> - - 3
> groovysh_parse: 2: unexpected token: - @ line 2, column 3.
> - - 3
> ^
> groovy:000> - + 3
> groovysh_parse: 2: unexpected token: + @ line 2, column 3.
> - + 3
> ^
> groovy:000> - -3
> groovysh_parse: 2: unexpected token: - @ line 2, column 3.
> - -3
> ^
> groovy:000> + + 3
> groovysh_parse: 2: unexpected token: + @ line 2, column 3.
> + + 3
> This is just an annoyance, or perhaps it is intentional.
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