com.github.bloodshura.ignitium.cfg.json.mapping.Parameter Maven / Gradle / Ivy

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A collection of configuration and serialization readers and writers, like JSON, internationalization (I18n), and CSV.

There is a newer version: 1.0.1

package com.github.bloodshura.ignitium.cfg.json.mapping;

import com.github.bloodshura.ignitium.object.AutoBase;
import com.github.bloodshura.ignitium.worker.UtilWorker;

import javax.annotation.Nonnull;
import javax.annotation.Nullable;

public final class Parameter extends AutoBase {
	private final Class expectedType;
	private final boolean ignoresCase;
	private final String name;
	private final boolean optional;
	private final Object origin;
	private Object value;
	private final Class valueMapper;

	public Parameter(@Nonnull Object origin, @Nonnull String name, @Nonnull Class expectedType, boolean optional, boolean ignoresCase, @Nullable Class valueMapper) {
		this.expectedType = expectedType;
		this.ignoresCase = ignoresCase;
		this.name = name;
		this.optional = optional;
		this.origin = origin;
		this.valueMapper = valueMapper;
	}

	public boolean accepts(@Nonnull Class valueType) {
		return getExpectedType().isAssignableFrom(valueType) || UtilWorker.primitiveClassMatch(valueType, getExpectedType()) || testImplicitNumericCoercion(valueType);
	}

	public boolean accepts(@Nullable Object value) {
		return value == null ? isOptional() : accepts(value.getClass());
	}

	@Nonnull
	public Class getExpectedType() {
		return expectedType;
	}

	@Nonnull
	public String getName() {
		return name;
	}

	@Nullable
	public Object getOrigin() {
		return origin;
	}

	@Nullable
	public Object getValue() {
		return value;
	}

	@Nullable
	public Class getValueMapper() {
		return valueMapper;
	}

	public boolean ignoresCase() {
		return ignoresCase;
	}

	public boolean isOptional() {
		return optional;
	}

	public void setValue(@Nullable Object value) throws JsonMappingException {
		if (value == null) {
			this.value = null;
		} else if (accepts(value)) {
			this.value = value;
		} else {
			throw new JsonMappingException("Value is not accepted (expected type: " + getExpectedType().getSimpleName() + ", value type: " + value.getClass().getSimpleName() + ')');
		}
	}

	private boolean testImplicitNumericCoercion(Class valueType) {
		Class paramType = UtilWorker.fixPrimitiveClass(getExpectedType());

		valueType = UtilWorker.fixPrimitiveClass(valueType);

		return Number.class.isAssignableFrom(paramType) && Number.class.isAssignableFrom(valueType);
	}
}