Upgrade javaparser-core to 3.23.0

DB/src/main/java/com/github/javaparser/ExpressionParser.java

@@ -0,0 +1,36 @@
+package com.github.javaparser;
+
+import com.github.javaparser.ast.expr.Expression;
+
+import java.io.IOException;
+import java.io.StringReader;
+
+/**
+ * Helpful class which parses expressions and performs extra "this is exactly one expression" validation
+ */
+public class ExpressionParser {
+    public static Expression parseExpression(String expression) {
+        StringReader sr = new StringReader(expression);
+        ParseResult<Expression> result = new JavaParser().parse(ParseStart.EXPRESSION, Providers.provider(sr));
+        if (!result.isSuccessful()) {
+            throw new IllegalArgumentException(
+                    "Invalid expression " + expression + ": " + result.getProblems().toString());
+        }
+
+        Expression expr = result.getResult().orElse(null);
+
+        // let's be certain the string reader was drained; or else we might not have parsed what we thought we did
+        try {
+            int test;
+            while ((test = sr.read()) != -1) {
+                if (!Character.isWhitespace(test)) {
+                    throw new IllegalArgumentException(
+                            "Invalid expression " + expression + " was already terminated after " + expr);
+                }
+            }
+            sr.close();
+        } catch (IOException ignored) {
+        }
+        return expr;
+    }
+}