private Expression parseReplaceFunction(
      IoTDBSqlParser.ScalarFunctionExpressionContext replaceClause, boolean canUseFullPath) {
    FunctionExpression functionExpression = new FunctionExpression(REPLACE_FUNCTION);
    functionExpression.addExpression(parseExpression(replaceClause.text, canUseFullPath));
    functionExpression.addAttribute(REPLACE_FROM, parseStringLiteral(replaceClause.from.getText()));
    functionExpression.addAttribute(REPLACE_TO, parseStringLiteral(replaceClause.to.getText()));
    return functionExpression;
  }
function for parsing file path used by LOAD statement.
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/plan/parser/ASTVisitor.java