[new-parser] function definition causes an error

[yurloc]

Parent issue

• Experiment: New DRL parser #5678

Failing tests

• org.drools.model.codegen.execmodel.MvelOperatorsTest#testMatchesWithFunction

Notes

• Both STANDARD_FROM_DRL and PATTERN_DSL.

Rule code snippet

function String addStar(String s) { return s + "*"; }

Error output

### parse : ANTLR4_PARSER_ENABLED = true
line 2:45 missing ';' at '+'
line 2:47 mismatched input '"*"' expecting {'boolean', 'byte', 'char', 'double', 'float', 'int', 'long', 'new', 'short', 'super', 'switch', 'this', 'void', 'module', 'open', 'requires', 'exports', 'opens', 'to', 'uses', 'provides', 'with', 'transitive', 'var', 'yield', 'record', 'sealed', 'permits', DECIMAL_LITERAL, HEX_LITERAL, OCT_LITERAL, BINARY_LITERAL, FLOAT_LITERAL, HEX_FLOAT_LITERAL, BOOL_LITERAL, CHAR_LITERAL, STRING_LITERAL, TEXT_BLOCK, 'null', '(', '<', '!', '~', '++', '--', '+', '-', '@', IDENTIFIER}
21:45:05.199 [main] ERROR o.d.c.k.b.impl.AbstractKieProject.buildKnowledgePackages:280 - Unable to build KieBaseModel:defaultKieBase
[2,45]: missing ';' at '+'
[2,47]: mismatched input '"*"' expecting {'boolean', 'byte', 'char', 'double', 'float', 'int', 'long', 'new', 'short', 'super', 'switch', 'this', 'void', 'module', 'open', 'requires', 'exports', 'opens', 'to', 'uses', 'provides', 'with', 'transitive', 'var', 'yield', 'record', 'sealed', 'permits', DECIMAL_LITERAL, HEX_LITERAL, OCT_LITERAL, BINARY_LITERAL, FLOAT_LITERAL, HEX_FLOAT_LITERAL, BOOL_LITERAL, CHAR_LITERAL, STRING_LITERAL, TEXT_BLOCK, 'null', '(', '<', '!', '~', '++', '--', '+', '-', '@', IDENTIFIER}
[0,0]: Parser returned a null Package


java.lang.AssertionError: [Message [id=1, kieBase=defaultKieBase, level=ERROR, path=r0.drl, line=2, column=0
   text=missing ';' at '+'], Message [id=2, kieBase=defaultKieBase, level=ERROR, path=r0.drl, line=2, column=0
   text=mismatched input '"*"' expecting {'boolean', 'byte', 'char', 'double', 'float', 'int', 'long', 'new', 'short', 'super', 'switch', 'this', 'void', 'module', 'open', 'requires', 'exports', 'opens', 'to', 'uses', 'provides', 'with', 'transitive', 'var', 'yield', 'record', 'sealed', 'permits', DECIMAL_LITERAL, HEX_LITERAL, OCT_LITERAL, BINARY_LITERAL, FLOAT_LITERAL, HEX_FLOAT_LITERAL, BOOL_LITERAL, CHAR_LITERAL, STRING_LITERAL, TEXT_BLOCK, 'null', '(', '<', '!', '~', '++', '--', '+', '-', '@', IDENTIFIER}], Message [id=3, kieBase=defaultKieBase, level=ERROR, path=r0.drl, line=0, column=0
   text=Parser returned a null Package]]

	at org.drools.model.codegen.execmodel.BaseModelTest.createKieBuilder(BaseModelTest.java:157)
	at org.drools.model.codegen.execmodel.BaseModelTest.createKieBuilder(BaseModelTest.java:132)
	at org.drools.model.codegen.execmodel.BaseModelTest.getKieContainer(BaseModelTest.java:121)
	at org.drools.model.codegen.execmodel.BaseModelTest.getKieContainer(BaseModelTest.java:114)
	at org.drools.model.codegen.execmodel.BaseModelTest.getKieSession(BaseModelTest.java:110)
	at org.drools.model.codegen.execmodel.BaseModelTest.getKieSession(BaseModelTest.java:106)
	at org.drools.model.codegen.execmodel.MvelOperatorsTest.testMatchesWithFunction(MvelOperatorsTest.java:327)

[tkobayas]

/take

[tkobayas]

Fixed by #5793