antlr4
missing keyword at keyword in Antlr Lab
grammar Hello;
r : 'hello' ID ;
ID : [a-z]+ ;
WS : [ \t\r\n]+ -> skip ;
Input: hello world
Error: 1:0 missing 'hello' at 'hello'
I followed the code carefully... ive tried editing the code and it did not work.
Im a beginner with no compiler experience so can you please explain the error and give me tips on how to make levers using antler
Solution
There is nothing wrong with the grammar. You probably didn't see the Lexer tab.
Just remove everything you see in the Lexer tab.
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