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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.document.json.readers;
import com.fasterxml.jackson.core.JsonToken;
import com.google.common.base.Preconditions;
import java.util.Arrays;
public class JsonParserHelpers {
public static void expectArrayStart(JsonToken token) {
try {
Preconditions.checkState(token == JsonToken.START_ARRAY, "Expected start of array, got %s", token);
}
catch (IllegalStateException e) {
throw new IllegalArgumentException(e);
}
}
public static void expectArrayEnd(JsonToken token) {
try {
Preconditions.checkState(token == JsonToken.END_ARRAY, "Expected start of array, got %s", token);
}
catch (IllegalStateException e) {
throw new IllegalArgumentException(e);
}
}
public static void expectObjectStart(JsonToken token) {
try {
Preconditions.checkState(token == JsonToken.START_OBJECT, "Expected start of JSON object, got %s", token);
}
catch (IllegalStateException e) {
throw new IllegalArgumentException(e);
}
}
public static void expectObjectEnd(JsonToken token) {
try {
Preconditions.checkState(token == JsonToken.END_OBJECT, "Expected end of JSON object, got %s", token);
}
catch (IllegalStateException e) {
throw new IllegalArgumentException(e);
}
}
public static void expectCompositeEnd(JsonToken token) {
try {
Preconditions.checkState(token.isStructEnd(), "Expected end of composite, got %s", token);
}
catch (IllegalStateException e) {
throw new IllegalArgumentException(e);
}
}
public static void expectScalarValue(JsonToken token) {
try {
Preconditions.checkState(token.isScalarValue(), "Expected to be scalar value, got %s", token);
}
catch (IllegalStateException e) {
throw new IllegalArgumentException(e);
}
}
public static void expectOneOf(JsonToken token, JsonToken ... tokens) {
if (Arrays.stream(tokens).noneMatch(t -> t == token))
throw new IllegalArgumentException("Expected one of " + tokens + " but got " + token);
}
}
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