Examples with InlineList org.springframework.expression.spel.ast.InlineList used on opensource projects

Example 1 with InlineList

use of org.springframework.expression.spel.ast.InlineList in project spring-framework by spring-projects.

the class InternalSpelExpressionParser method maybeEatInlineListOrMap.

// list = LCURLY (element (COMMA element)*) RCURLY
// map  = LCURLY (key ':' value (COMMA key ':' value)*) RCURLY
private boolean maybeEatInlineListOrMap() {
    Token t = peekToken();
    if (!peekToken(TokenKind.LCURLY, true)) {
        return false;
    }
    SpelNodeImpl expr = null;
    Token closingCurly = peekToken();
    if (peekToken(TokenKind.RCURLY, true)) {
        // empty list '{}'
        expr = new InlineList(toPos(t.startPos, closingCurly.endPos));
    } else if (peekToken(TokenKind.COLON, true)) {
        closingCurly = eatToken(TokenKind.RCURLY);
        // empty map '{:}'
        expr = new InlineMap(toPos(t.startPos, closingCurly.endPos));
    } else {
        SpelNodeImpl firstExpression = eatExpression();
        // ':' - this is a map!
        if (peekToken(TokenKind.RCURLY)) {
            // list with one item in it
            List<SpelNodeImpl> listElements = new ArrayList<>();
            listElements.add(firstExpression);
            closingCurly = eatToken(TokenKind.RCURLY);
            expr = new InlineList(toPos(t.startPos, closingCurly.endPos), listElements.toArray(new SpelNodeImpl[listElements.size()]));
        } else if (peekToken(TokenKind.COMMA, true)) {
            // multi-item list
            List<SpelNodeImpl> listElements = new ArrayList<>();
            listElements.add(firstExpression);
            do {
                listElements.add(eatExpression());
            } while (peekToken(TokenKind.COMMA, true));
            closingCurly = eatToken(TokenKind.RCURLY);
            expr = new InlineList(toPos(t.startPos, closingCurly.endPos), listElements.toArray(new SpelNodeImpl[listElements.size()]));
        } else if (peekToken(TokenKind.COLON, true)) {
            // map!
            List<SpelNodeImpl> mapElements = new ArrayList<>();
            mapElements.add(firstExpression);
            mapElements.add(eatExpression());
            while (peekToken(TokenKind.COMMA, true)) {
                mapElements.add(eatExpression());
                eatToken(TokenKind.COLON);
                mapElements.add(eatExpression());
            }
            closingCurly = eatToken(TokenKind.RCURLY);
            expr = new InlineMap(toPos(t.startPos, closingCurly.endPos), mapElements.toArray(new SpelNodeImpl[mapElements.size()]));
        } else {
            raiseInternalException(t.startPos, SpelMessage.OOD);
        }
    }
    this.constructedNodes.push(expr);
    return true;
}

Example 2 with InlineList

use of org.springframework.expression.spel.ast.InlineList in project spring-framework by spring-projects.

the class ListTests method checkConstantList.

private void checkConstantList(String expressionText, boolean expectedToBeConstant) {
    SpelExpressionParser parser = new SpelExpressionParser();
    SpelExpression expression = (SpelExpression) parser.parseExpression(expressionText);
    SpelNode node = expression.getAST();
    assertTrue(node instanceof InlineList);
    InlineList inlineList = (InlineList) node;
    if (expectedToBeConstant) {
        assertTrue(inlineList.isConstant());
    } else {
        assertFalse(inlineList.isConstant());
    }
}