public final BaseDescr unaryExpression()

in drools-drl/drools-drl-parser/src/main/java/org/drools/drl/parser/lang/DRL6Expressions.java [3339:3472]
121 lines of code
46 McCabe index (conditional complexity)

	public final BaseDescr unaryExpression() throws RecognitionException {
		BaseDescr result = null;


		BaseDescr ue =null;
		ParserRuleReturnScope left =null;

		try {
			// src/main/resources/org/drools/drl/parser/DRL6Expressions.g:509:5: ( PLUS ue= unaryExpression | MINUS ue= unaryExpression | INCR primary | DECR primary |left= unaryExpressionNotPlusMinus )
			int alt49=5;
			switch ( input.LA(1) ) {
			case PLUS:
				{
				alt49=1;
				}
				break;
			case MINUS:
				{
				alt49=2;
				}
				break;
			case INCR:
				{
				alt49=3;
				}
				break;
			case DECR:
				{
				alt49=4;
				}
				break;
			case BOOL:
			case DECIMAL:
			case DIV:
			case DOT:
			case FLOAT:
			case HEX:
			case ID:
			case LEFT_PAREN:
			case LEFT_SQUARE:
			case LESS:
			case NEGATION:
			case NULL:
			case QUESTION_DIV:
			case STAR:
			case STRING:
			case TILDE:
			case TIME_INTERVAL:
				{
				alt49=5;
				}
				break;
			default:
				if (state.backtracking>0) {state.failed=true; return result;}
				NoViableAltException nvae =
					new NoViableAltException("", 49, 0, input);
				throw nvae;
			}
			switch (alt49) {
				case 1 :
					// src/main/resources/org/drools/drl/parser/DRL6Expressions.g:509:9: PLUS ue= unaryExpression
					{
					match(input,PLUS,FOLLOW_PLUS_in_unaryExpression2354); if (state.failed) return result;
					pushFollow(FOLLOW_unaryExpression_in_unaryExpression2358);
					ue=unaryExpression();
					state._fsp--;
					if (state.failed) return result;
					if ( state.backtracking==0 ) { if( buildDescr ) {
					            result = ue;
					            if( result instanceof AtomicExprDescr ) {
					                ((AtomicExprDescr)result).setExpression( "+" + ((AtomicExprDescr)result).getExpression() );
					            }
					        } }
					}
					break;
				case 2 :
					// src/main/resources/org/drools/drl/parser/DRL6Expressions.g:516:7: MINUS ue= unaryExpression
					{
					match(input,MINUS,FOLLOW_MINUS_in_unaryExpression2376); if (state.failed) return result;
					pushFollow(FOLLOW_unaryExpression_in_unaryExpression2380);
					ue=unaryExpression();
					state._fsp--;
					if (state.failed) return result;
					if ( state.backtracking==0 ) { if( buildDescr ) {
					            result = ue;
					            if( result instanceof AtomicExprDescr ) {
					                ((AtomicExprDescr)result).setExpression( "-" + ((AtomicExprDescr)result).getExpression() );
					            }
					        } }
					}
					break;
				case 3 :
					// src/main/resources/org/drools/drl/parser/DRL6Expressions.g:523:9: INCR primary
					{
					match(input,INCR,FOLLOW_INCR_in_unaryExpression2400); if (state.failed) return result;
					pushFollow(FOLLOW_primary_in_unaryExpression2402);
					primary();
					state._fsp--;
					if (state.failed) return result;
					}
					break;
				case 4 :
					// src/main/resources/org/drools/drl/parser/DRL6Expressions.g:524:9: DECR primary
					{
					match(input,DECR,FOLLOW_DECR_in_unaryExpression2412); if (state.failed) return result;
					pushFollow(FOLLOW_primary_in_unaryExpression2414);
					primary();
					state._fsp--;
					if (state.failed) return result;
					}
					break;
				case 5 :
					// src/main/resources/org/drools/drl/parser/DRL6Expressions.g:525:9: left= unaryExpressionNotPlusMinus
					{
					pushFollow(FOLLOW_unaryExpressionNotPlusMinus_in_unaryExpression2426);
					left=unaryExpressionNotPlusMinus();
					state._fsp--;
					if (state.failed) return result;
					if ( state.backtracking==0 ) { if( buildDescr ) { result = (left!=null?((DRL6Expressions.unaryExpressionNotPlusMinus_return)left).result:null); } }
					}
					break;

			}
		}

		catch (RecognitionException re) {
		    throw re;
		}

		finally {
			// do for sure before leaving
		}
		return result;
	}