package org.springframework.web.servlet.function;
import java.util.Map;
import java.util.Optional;
import java.util.Set;
import java.util.function.Function;
import org.springframework.core.io.Resource;
import org.springframework.http.HttpMethod;
class ToStringVisitor implements RouterFunctions.Visitor, RequestPredicates.Visitor {
private final StringBuilder builder = new StringBuilder();
private int indent = 0;
@Override
public void startNested(RequestPredicate predicate) {
indent();
predicate.accept(this);
this.builder.append(" => {\n");
this.indent++;
}
@Override
public void endNested(RequestPredicate predicate) {
this.indent--;
indent();
this.builder.append("}\n");
}
@Override
public void route(RequestPredicate predicate, HandlerFunction<?> handlerFunction) {
indent();
predicate.accept(this);
this.builder.append(" -> ");
this.builder.append(handlerFunction).append('\n');
}
@Override
public void resources(Function<ServerRequest, Optional<Resource>> lookupFunction) {
indent();
this.builder.append(lookupFunction).append('\n');
}
@Override
public void attributes(Map<String, Object> attributes) {
}
@Override
public void unknown(RouterFunction<?> routerFunction) {
indent();
this.builder.append(routerFunction);
}
private void indent() {
for (int i = 0; i < this.indent; i++) {
this.builder.append(' ');
}
}
@Override
public void method(Set<HttpMethod> methods) {
if (methods.size() == 1) {
this.builder.append(methods.iterator().next());
}
else {
this.builder.append(methods);
}
}
@Override
public void path(String pattern) {
this.builder.append(pattern);
}
@Override
public void pathExtension(String extension) {
this.builder.append(String.format("*.%s", extension));
}
@Override
public void (String name, String value) {
this.builder.append(String.format("%s: %s", name, value));
}
@Override
public void param(String name, String value) {
this.builder.append(String.format("?%s == %s", name, value));
}
@Override
public void startAnd() {
this.builder.append('(');
}
@Override
public void and() {
this.builder.append(" && ");
}
@Override
public void endAnd() {
this.builder.append(')');
}
@Override
public void startOr() {
this.builder.append('(');
}
@Override
public void or() {
this.builder.append(" || ");
}
@Override
public void endOr() {
this.builder.append(')');
}
@Override
public void startNegate() {
this.builder.append("!(");
}
@Override
public void endNegate() {
this.builder.append(')');
}
@Override
public void unknown(RequestPredicate predicate) {
this.builder.append(predicate);
}
@Override
public String toString() {
String result = this.builder.toString();
if (result.endsWith("\n")) {
result = result.substring(0, result.length() - 1);
}
return result;
}
}