public final BaseDescr relationalExpression()

in drools-drl/drools-drl-parser/src/main/java/org/drools/drl/parser/lang/DRL6Expressions.java [2530:2658]
110 lines of code
36 McCabe index (conditional complexity)

	public final BaseDescr relationalExpression() throws RecognitionException {
		relationalExpression_stack.push(new relationalExpression_scope());
		BaseDescr result = null;


		ParserRuleReturnScope left =null;
		BaseDescr right =null;

		 relationalExpression_stack.peek().lsd = null; 
		try {
			// src/main/resources/org/drools/drl/parser/DRL6Expressions.g:397:3: (left= shiftExpression ( ( operator | LEFT_PAREN )=>right= orRestriction )* )
			// src/main/resources/org/drools/drl/parser/DRL6Expressions.g:397:5: left= shiftExpression ( ( operator | LEFT_PAREN )=>right= orRestriction )*
			{
			pushFollow(FOLLOW_shiftExpression_in_relationalExpression1835);
			left=shiftExpression();
			state._fsp--;
			if (state.failed) return result;
			if ( state.backtracking==0 ) { if( buildDescr  ) {
			          if ( (left!=null?((DRL6Expressions.shiftExpression_return)left).result:null) == null ) {
			            result = new AtomicExprDescr( (left!=null?input.toString(left.start,left.stop):null) );
			          } else if ( (left!=null?((DRL6Expressions.shiftExpression_return)left).result:null) instanceof AtomicExprDescr ) {
			            if ( (left!=null?input.toString(left.start,left.stop):null).equals(((AtomicExprDescr)(left!=null?((DRL6Expressions.shiftExpression_return)left).result:null)).getExpression()) ) {
			              result = (left!=null?((DRL6Expressions.shiftExpression_return)left).result:null);
			            } else {
			              result = new AtomicExprDescr( (left!=null?input.toString(left.start,left.stop):null) ) ;
			            }
			          } else if ( (left!=null?((DRL6Expressions.shiftExpression_return)left).result:null) instanceof BindingDescr ) {
			              if ( (left!=null?input.toString(left.start,left.stop):null).equals(((BindingDescr)(left!=null?((DRL6Expressions.shiftExpression_return)left).result:null)).getExpression()) ) {
			                result = (left!=null?((DRL6Expressions.shiftExpression_return)left).result:null);
			              } else {
			                BindingDescr bind = (BindingDescr) (left!=null?((DRL6Expressions.shiftExpression_return)left).result:null);
			                int offset = bind.isUnification() ? 2 : 1;
			                String fullExpression = (left!=null?input.toString(left.start,left.stop):null).substring( (left!=null?input.toString(left.start,left.stop):null).indexOf( ":" ) + offset ).trim();
			                result = new BindingDescr( bind.getVariable(), bind.getExpression(), fullExpression, bind.isUnification() );
			              }
			          } else {
			              result = (left!=null?((DRL6Expressions.shiftExpression_return)left).result:null);
			          }
			          relationalExpression_stack.peek().lsd = result;
			      }
			    }
			// src/main/resources/org/drools/drl/parser/DRL6Expressions.g:422:3: ( ( operator | LEFT_PAREN )=>right= orRestriction )*
			loop37:
			while (true) {
				int alt37=2;
				int LA37_0 = input.LA(1);
				if ( (LA37_0==ID) ) {
					int LA37_2 = input.LA(2);
					if ( (((((helper.validateIdentifierKey(DroolsSoftKeywords.NOT)))||((helper.isPluggableEvaluator(false))))&&synpred9_DRL6Expressions())) ) {
						alt37=1;
					}

				}
				else if ( (LA37_0==EQUALS) ) {
					int LA37_3 = input.LA(2);
					if ( (synpred9_DRL6Expressions()) ) {
						alt37=1;
					}

				}
				else if ( (LA37_0==NOT_EQUALS) ) {
					int LA37_4 = input.LA(2);
					if ( (synpred9_DRL6Expressions()) ) {
						alt37=1;
					}

				}
				else if ( (LA37_0==LESS) ) {
					int LA37_20 = input.LA(2);
					if ( (synpred9_DRL6Expressions()) ) {
						alt37=1;
					}

				}
				else if ( (LA37_0==GREATER) ) {
					int LA37_21 = input.LA(2);
					if ( (synpred9_DRL6Expressions()) ) {
						alt37=1;
					}

				}
				else if ( (LA37_0==TILDE) && (synpred9_DRL6Expressions())) {
					alt37=1;
				}
				else if ( (LA37_0==LESS_EQUALS) && (synpred9_DRL6Expressions())) {
					alt37=1;
				}
				else if ( (LA37_0==GREATER_EQUALS) && (synpred9_DRL6Expressions())) {
					alt37=1;
				}
				else if ( (LA37_0==LEFT_PAREN) && (synpred9_DRL6Expressions())) {
					alt37=1;
				}

				switch (alt37) {
				case 1 :
					// src/main/resources/org/drools/drl/parser/DRL6Expressions.g:422:5: ( operator | LEFT_PAREN )=>right= orRestriction
					{
					pushFollow(FOLLOW_orRestriction_in_relationalExpression1860);
					right=orRestriction();
					state._fsp--;
					if (state.failed) return result;
					if ( state.backtracking==0 ) { if( buildDescr  ) {
					               result = right;
					               relationalExpression_stack.peek().lsd = result;
					           }
					         }
					}
					break;

				default :
					break loop37;
				}
			}

			}

		}

		catch (RecognitionException re) {
		    throw re;
		}

		finally {
			// do for sure before leaving
			relationalExpression_stack.pop();
		}
		return result;
	}