How to use

ch.qos.logback.core.subst.Parser

constructor

private static Node tokenizeAndParseString(String value) throws ScanException {
 Tokenizer tokenizer = new Tokenizer(value);
 List<Token> tokens = tokenizer.tokenize();
 Parser parser = new Parser(tokens);
 return parser.parse();
}

private static Node tokenizeAndParseString(String value) throws ScanException {
  Tokenizer tokenizer = new Tokenizer(value);
  List<Token> tokens = tokenizer.tokenize();
  Parser parser = new Parser(tokens);
  return parser.parse();
}

private static Node tokenizeAndParseString(String value) throws ScanException {
 Tokenizer tokenizer = new Tokenizer(value);
 List<Token> tokens = tokenizer.tokenize();
 Parser parser = new Parser(tokens);
 return parser.parse();
}

private static Node tokenizeAndParseString(String value) throws ScanException {
 Tokenizer tokenizer = new Tokenizer(value);
 List<Token> tokens = tokenizer.tokenize();
 Parser parser = new Parser(tokens);
 return parser.parse();
}

private static Node tokenizeAndParseString(String value) throws ScanException {
  Tokenizer tokenizer = new Tokenizer(value);
  List<Token> tokens = tokenizer.tokenize();
  Parser parser = new Parser(tokens);
  return parser.parse();
}

private static Node tokenizeAndParseString(String value) throws ScanException {
  Tokenizer tokenizer = new Tokenizer(value);
  List<Token> tokens = tokenizer.tokenize();
  Parser parser = new Parser(tokens);
  return parser.parse();
}

@Test
public void emptyTokenListDoesNotThrowNullPointerException() throws ScanException {
 // An empty token list would be returned from Tokenizer.tokenize()
 // if it were constructed with an empty string. The parser should
 // be able to handle this.
 Parser parser = new Parser(new ArrayList<Token>());
 parser.parse();
}

public static String substituteVariable(String input, PropertyContainer pc0, PropertyContainer pc1) throws ScanException {
 Tokenizer tokenizer = new Tokenizer(input);
 Parser parser = new Parser(tokenizer.tokenize());
 Node node = parser.parse();
 NodeToStringTransformer nodeToStringTransformer = new NodeToStringTransformer(node, pc0, pc1);
 return nodeToStringTransformer.transform();
}

public static String substituteVariable(String input, PropertyContainer pc0, PropertyContainer pc1) throws ScanException {
 Tokenizer tokenizer = new Tokenizer(input);
 Parser parser = new Parser(tokenizer.tokenize());
 Node node = parser.parse();
 NodeToStringTransformer nodeToStringTransformer = new NodeToStringTransformer(node, pc0, pc1);
 return nodeToStringTransformer.transform();
}

private Node makeNode(String input) throws ScanException {
 Tokenizer tokenizer = new Tokenizer(input);
 Parser parser = new Parser(tokenizer.tokenize());
 return parser.parse();
}

@Test
public void literal() throws ScanException {
 Tokenizer tokenizer = new Tokenizer("abc");
 Parser parser = new Parser(tokenizer.tokenize());
 Node node = parser.parse();
 Node witness = new Node(Node.Type.LITERAL, "abc");
 assertEquals(witness, node);
}

@Test
public void literalWithAccolade0() throws ScanException {
 Tokenizer tokenizer = new Tokenizer("{}");
 Parser parser = new Parser(tokenizer.tokenize());
 Node node = parser.parse();
 Node witness = new Node(Node.Type.LITERAL, "{");
 witness.next = new Node(Node.Type.LITERAL, "}");
 assertEquals(witness, node);
}

@Test
public void variable() throws ScanException {
 Tokenizer tokenizer = new Tokenizer("${abc}");
 Parser parser = new Parser(tokenizer.tokenize());
 Node node = parser.parse();
 Node witness = new Node(Node.Type.VARIABLE, new Node(Node.Type.LITERAL, "abc"));
 assertEquals(witness, node);
}

@Test
public void literalWithAccolade1() throws ScanException {
 Tokenizer tokenizer = new Tokenizer("%x{a}");
 Parser parser = new Parser(tokenizer.tokenize());
 Node node = parser.parse();
 Node witness = new Node(Node.Type.LITERAL, "%x");
 Node t = witness.next = new Node(Node.Type.LITERAL, "{");
 t.next = new Node(Node.Type.LITERAL, "a");
 t = t.next;
 t.next = new Node(Node.Type.LITERAL, "}");
 assertEquals(witness, node);
}

@Test
public void withDefault() throws ScanException {
 Tokenizer tokenizer = new Tokenizer("${b:-c}");
 Parser parser = new Parser(tokenizer.tokenize());
 Node node = parser.parse();
 Node witness = new Node(Node.Type.VARIABLE, new Node(Node.Type.LITERAL, "b"));
 witness.defaultPart = new Node(Node.Type.LITERAL, "c");
 assertEquals(witness, node);
}

@Test
public void literalVariableLiteral() throws ScanException {
 Tokenizer tokenizer = new Tokenizer("a${b}c");
 Parser parser = new Parser(tokenizer.tokenize());
 Node node = parser.parse();
 Node witness = new Node(Node.Type.LITERAL, "a");
 witness.next = new Node(Node.Type.VARIABLE, new Node(Node.Type.LITERAL, "b"));
 witness.next.next = new Node(Node.Type.LITERAL, "c");
 assertEquals(witness, node);
}

@Test
public void withColon() throws ScanException {
 Tokenizer tokenizer = new Tokenizer("a:${b}");
 Parser parser = new Parser(tokenizer.tokenize());
 Node node = parser.parse();
 Node witness = new Node(Node.Type.LITERAL, "a");
 Node t = witness.next = new Node(Node.Type.LITERAL, ":");
 t.next = new Node(Node.Type.VARIABLE, new Node(Node.Type.LITERAL, "b"));
 assertEquals(witness, node);
}

@Test
public void defaultSeparatorOutsideOfAVariable() throws ScanException {
 Tokenizer tokenizer = new Tokenizer("{a:-b}");
 Parser parser = new Parser(tokenizer.tokenize());
 Node node = parser.parse();
 dump(node);
 Node witness = new Node(Node.Type.LITERAL, "{");
 Node t = witness.next = new Node(Node.Type.LITERAL, "a");
 t.next = new Node(Node.Type.LITERAL, ":-");
 t = t.next;
 t.next = new Node(Node.Type.LITERAL, "b");
 t = t.next;
 t.next = new Node(Node.Type.LITERAL, "}");
 assertEquals(witness, node);
}

@Test
public void nested() throws ScanException {
 Tokenizer tokenizer = new Tokenizer("a${b${c}}d");
 Parser parser = new Parser(tokenizer.tokenize());
 Node node = parser.parse();
 Node witness = new Node(Node.Type.LITERAL, "a");
 Node bLiteralNode = new Node(Node.Type.LITERAL, "b");
 Node cLiteralNode = new Node(Node.Type.LITERAL, "c");
 Node bVariableNode = new Node(Node.Type.VARIABLE, bLiteralNode);
 Node cVariableNode = new Node(Node.Type.VARIABLE, cLiteralNode);
 bLiteralNode.next = cVariableNode;
 witness.next = bVariableNode;
 witness.next.next = new Node(Node.Type.LITERAL, "d");
 assertEquals(witness, node);
}

@Test
public void literalWithTwoAccolades() throws ScanException {
 Tokenizer tokenizer = new Tokenizer("%x{y} %a{b} c");
 Parser parser = new Parser(tokenizer.tokenize());
 Node node = parser.parse();
 Node witness = new Node(Node.Type.LITERAL, "%x");
 Node t = witness.next = new Node(Node.Type.LITERAL, "{");
 t.next = new Node(Node.Type.LITERAL, "y");
 t = t.next;
 t.next = new Node(Node.Type.LITERAL, "}");
 t = t.next;
 t.next = new Node(Node.Type.LITERAL, " %a");
 t = t.next;
 t.next = new Node(Node.Type.LITERAL, "{");
 t = t.next;
 t.next = new Node(Node.Type.LITERAL, "b");
 t = t.next;
 t.next = new Node(Node.Type.LITERAL, "}");
 t = t.next;
 t.next = new Node(Node.Type.LITERAL, " c");
 node.dump();
 System.out.println("");
 assertEquals(witness, node);
}