add addzone and update zone in map-adapter interface

node_modules/@maplibre/maplibre-gl-style-spec/src/expression/definitions/slice.ts

@@ -0,0 +1,86 @@
+import {
+    ValueType,
+    NumberType,
+    StringType,
+    array,
+    typeToString,
+    isValidType,
+    isValidNativeType,
+} from '../types';
+import {RuntimeError} from '../runtime_error';
+import {typeOf} from '../values';
+
+import type {Expression} from '../expression';
+import type {ParsingContext} from '../parsing_context';
+import type {EvaluationContext} from '../evaluation_context';
+import type {Type} from '../types';
+
+export class Slice implements Expression {
+    type: Type;
+    input: Expression;
+    beginIndex: Expression;
+    endIndex: Expression;
+
+    constructor(type: Type, input: Expression, beginIndex: Expression, endIndex?: Expression) {
+        this.type = type;
+        this.input = input;
+        this.beginIndex = beginIndex;
+        this.endIndex = endIndex;
+
+    }
+
+    static parse(args: ReadonlyArray<unknown>, context: ParsingContext): Expression {
+        if (args.length <= 2 ||  args.length >= 5) {
+            return context.error(`Expected 2 or 3 arguments, but found ${args.length - 1} instead.`) as null;
+        }
+
+        const input = context.parse(args[1], 1, ValueType);
+        const beginIndex = context.parse(args[2], 2, NumberType);
+
+        if (!input || !beginIndex) return null;
+
+        if (!isValidType(input.type, [array(ValueType), StringType, ValueType])) {
+            return context.error(`Expected first argument to be of type array or string, but found ${typeToString(input.type)} instead`) as null;
+        }
+
+        if (args.length === 4) {
+            const endIndex = context.parse(args[3], 3, NumberType);
+            if (!endIndex) return null;
+            return new Slice(input.type, input, beginIndex, endIndex);
+        } else {
+            return new Slice(input.type, input, beginIndex);
+        }
+    }
+
+    evaluate(ctx: EvaluationContext) {
+        const input = (this.input.evaluate(ctx) as any);
+        const beginIndex = (this.beginIndex.evaluate(ctx) as number);
+
+        let endIndex;
+        if (this.endIndex) {
+            endIndex = (this.endIndex.evaluate(ctx) as number);
+        }
+
+        if (isValidNativeType(input, ['string'])) {
+            // Indices may be affected by surrogate pairs.
+            return [...input].slice(beginIndex, endIndex).join('');
+        } else if (isValidNativeType(input, ['array'])) {
+            return input.slice(beginIndex, endIndex);
+        } else {
+            throw new RuntimeError(`Expected first argument to be of type array or string, but found ${typeToString(typeOf(input))} instead.`);
+        }
+    }
+
+    eachChild(fn: (_: Expression) => void) {
+        fn(this.input);
+        fn(this.beginIndex);
+        if (this.endIndex) {
+            fn(this.endIndex);
+        }
+    }
+
+    outputDefined() {
+        return false;
+    }
+}
+