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The parser module for ExpreTau
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/*
 * Copyright 2020 DataCanvas
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package io.github.datacanvasio.expretau.schema;

import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.annotation.JsonPropertyOrder;
import com.fasterxml.jackson.annotation.JsonTypeName;
import io.github.datacanvasio.expretau.runtime.TypeCode;
import io.github.datacanvasio.expretau.runtime.schema.RtSchema;
import io.github.datacanvasio.expretau.runtime.schema.RtSchemaLeaf;
import io.github.datacanvasio.expretau.runtime.schema.RtSchemaTuple;

import javax.annotation.Nonnull;

@JsonTypeName("array")
@JsonPropertyOrder({"items", "additionalItems"})
public final class SchemaArray extends Schema {
    @JsonProperty("items")
    private ArrayItems items;

    @JsonProperty("additionalItems")
    private Boolean additionalItems;

    @Override
    @Nonnull
    public RtSchema createRtSchema() {
        if (additionalItems == null || additionalItems) {
            if (items == null) {
                return new RtSchemaLeaf(TypeCode.LIST);
            }
            SchemaType type = items.getType();
            switch (type) {
                case INTEGER:
                    return new RtSchemaLeaf(TypeCode.LONG_ARRAY);
                case NUMBER:
                    return new RtSchemaLeaf(TypeCode.DOUBLE_ARRAY);
                case STRING:
                    return new RtSchemaLeaf(TypeCode.STRING_ARRAY);
                case BOOLEAN:
                    return new RtSchemaLeaf(TypeCode.BOOLEAN_ARRAY);
                case OBJECT:
                    return new RtSchemaLeaf(TypeCode.OBJECT_ARRAY);
                case ARRAY:
                default:
                    throw new IllegalArgumentException("Invalid schema type \"" + type + "\".");
            }
        }
        Schema[] schemas = items.getSchemas();
        RtSchema[] children = new RtSchema[schemas.length];
        for (int i = 0; i < schemas.length; i++) {
            children[i] = schemas[i].createRtSchema();
        }
        return new RtSchemaTuple(children);
    }
}