Examples of org.springframework.expression.spel.ast.Elvis

Package org.springframework.expression.spel.ast

Examples of org.springframework.expression.spel.ast.Elvis

org.springframework.expression.spel.ast.Elvis
Represents the elvis operator ?:. For an expression "a?:b" if a is not null, the value of the expression is "a", if a is null then the value of the expression is "b". @author Andy Clement @since 3.0

        nextToken(); // elvis has left the building
        SpelNodeImpl valueIfNull = eatExpression();
        if (valueIfNull==null) {
          valueIfNull = new NullLiteral(toPos(t.startpos+1,t.endpos+1));
        }
        return new Elvis(toPos(t),expr,valueIfNull);
      } else if (t.kind==TokenKind.QMARK) { // a?b:c
        if (expr==null) {
          expr = new NullLiteral(toPos(t.startpos-1,t.endpos-1));
        }
        nextToken();

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        SpelNodeImpl assignedValue = eatLogicalOrExpression();
        return new Assign(toPos(t),expr,assignedValue);
      } else if (t.kind==TokenKind.ELVIS) { // a?:b (a if it isn't null, otherwise b)
        nextToken(); // elvis has left the building
        SpelNodeImpl valueIfNull = eatExpression();
        return new Elvis(toPos(t),expr,valueIfNull);
      } else if (t.kind==TokenKind.QMARK) { // a?b:c
        nextToken();
        SpelNodeImpl ifTrueExprValue = eatExpression();  
        eatToken(TokenKind.COLON);
        SpelNodeImpl ifFalseExprValue = eatExpression();

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        nextToken(); // elvis has left the building
        SpelNodeImpl valueIfNull = eatExpression();
        if (valueIfNull==null) {
          valueIfNull = new NullLiteral(toPos(t.startpos+1,t.endpos+1));
        }
        return new Elvis(toPos(t),expr,valueIfNull);
      } else if (t.kind==TokenKind.QMARK) { // a?b:c
        if (expr==null) {
          expr = new NullLiteral(toPos(t.startpos-1,t.endpos-1));
        }
        nextToken();

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        nextToken();  // elvis has left the building
        SpelNodeImpl valueIfNull = eatExpression();
        if (valueIfNull==null) {
          valueIfNull = new NullLiteral(toPos(t.startPos + 1, t.endPos + 1));
        }
        return new Elvis(toPos(t), expr, valueIfNull);
      }


      if (t.kind == TokenKind.QMARK) {  // a?b:c
        if (expr == null) {
          expr = new NullLiteral(toPos(t.startPos - 1, t.endPos - 1));

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Related Classes of org.springframework.expression.spel.ast.Elvis

org.springframework.asm.Label

org.springframework.expression.spel.standard.InternalSpelExpressionParser

org.springframework.expression.TypedValue

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