36 lines
1.1 KiB
TypeScript
36 lines
1.1 KiB
TypeScript
import {ExpressionData, Kind, StringData} from "../data";
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import {FunctionDefinition} from "./info";
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export const join: FunctionDefinition = {
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name: "join",
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description:
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"`join( array, optionalSeparator )`\n\nThe value for `array` can be an array or a string. All values in `array` are concatenated into a string. If you provide `optionalSeparator`, it is inserted between the concatenated values. Otherwise, the default separator `,` is used. Casts values to a string.",
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minArgs: 1,
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maxArgs: 2,
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call: (...args: ExpressionData[]): ExpressionData => {
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// Primitive
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if (args[0].primitive) {
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return new StringData(args[0].coerceString());
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}
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// Array
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if (args[0].kind === Kind.Array) {
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// Separator
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let separator = ",";
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if (args.length > 1 && args[1].primitive) {
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separator = args[1].coerceString();
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}
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// Convert items to strings
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return new StringData(
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args[0]
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.values()
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.map(item => item.coerceString())
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.join(separator)
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);
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}
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return new StringData("");
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}
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};
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