wael-lib/dist/esm/index.mjs.map

Well-Known Text Arithmetic Expression Language

{"version":3,"sources":["../../src/main.ts","../../src/interpreter/interpreter.ts","../../src/interpreter/types.ts","../../src/interpreter/helpers.ts","../../src/interpreter/scope.ts","../../src/interpreter/built-in-functions.ts","../../src/interpreter/grammar.ts","../../src/lib.ts"],"sourcesContent":["import * as turf from '@turf/turf';\nimport * as wellknown from 'wellknown';\n\nimport { Interpreter } from \"./interpreter/interpreter\";\nimport { STD_LIB } from './lib';\nimport { Scope } from \"./interpreter/scope\";\n\nexport enum OutputFormat {\n    WKT = 'WKT',\n    GeoJSON = 'GeoJSON'\n}\n\nexport interface Options {\n    outputFormat?: OutputFormat,\n    outputNonGeoJSON?: boolean;\n    scope?: Scope;\n    storeHistoricalEvaluations?: boolean;\n}\n\nexport const DEFAULT_OPTIONS: Options = {\n    outputFormat: OutputFormat.WKT,\n    storeHistoricalEvaluations: true\n}\n\nexport class Wael {\n    private options: Options;\n    private evaluationCount = 0;\n    static IDENTIFIER_LAST = '$?';\n\n    constructor(\n        initialOptions?: Options\n    ) {\n        this.options = {\n            ...DEFAULT_OPTIONS,\n            ...initialOptions,\n            scope: initialOptions?.scope ?? Interpreter.createGlobalScope(),\n        };\n        \n        // Import standard library\n        Interpreter.evaluateInput(`StdLib = ${STD_LIB}; Import(StdLib()) Using (*)`, this.options.scope)\n    }\n\n    getEvaluationCount(): number {\n        return this.evaluationCount;\n    }\n\n    evaluate(input: string, overrideOptions?: Partial<Options>) {\n        const options = {\n            ...this.options,\n            ...overrideOptions\n        };\n\n        const result = Interpreter.evaluateInput(input, options.scope);\n\n        // Track evaluations\n        options.scope?.store(Wael.IDENTIFIER_LAST, result);\n        if (options.storeHistoricalEvaluations) {\n            const indexedResultLabel = `$${this.evaluationCount}`;\n            options.scope?.store(indexedResultLabel, result);\n        }\n        this.evaluationCount++;\n\n        if (typeof result === 'object' && typeof result?.type === 'string') {\n            switch(options?.outputFormat) {\n                case OutputFormat.WKT:\n                    return wellknown.stringify(result);\n                case OutputFormat.GeoJSON:\n                    return turf.feature(result) as any;\n                default:\n                    break;\n            }\n        }\n        \n        const output = Wael.getOutputString(result, options.outputFormat);\n        if (options.outputNonGeoJSON) {\n            if (options.outputFormat === OutputFormat.GeoJSON) {\n                return result ?? undefined;\n            }\n            return output;\n        } else {\n            const outputString = typeof output === 'string' ? output : JSON.stringify(output, undefined, 2)\n            throw new Error(`Invalid '${options.outputFormat}' evaluation result: ${outputString}`)\n        }\n    }\n\n    static evaluate(input: string, options?: Partial<Options>) {\n        return new Wael(options).evaluate(input);\n    }\n\n    private static getOutputString(result: any, outputFormat?: OutputFormat) {\n        if (typeof result === 'object') {\n            if (outputFormat === OutputFormat.WKT) {\n                const properties = Object.keys(result).map(key => {\n                    return `  ${key} = ${result[key]?.toString()}`\n                });\nreturn `(\n${properties.join(';\\n')}\n)`\n            } \n        }\n        return `${result}`\n    }\n}\n\n","// import ohm from 'ohm-js';\nimport * as ohm from 'ohm-js';\nimport * as turf from '@turf/turf'\n\nimport { GeometryType, UNIT } from './types';\nimport {\n    OperationNotSupported,\n    arithmeticOperationExp,\n    convertToGeometry,\n    geometryAccessor,\n    getArrayLikeItems,\n    getGeometryType,\n    isAnyGeometryType,\n    isGeometryType,\n    isNumber,\n    toString,\n    transform\n} from './helpers';\nimport { Scope, ScopeBindings } from './scope';\n\nimport { BuiltInFunctions } from './built-in-functions';\nimport { GRAMMAR } from './grammar';\nimport { readFileSync } from 'fs';\nimport syncFetch from 'sync-fetch'\n\nconst grammarString = GRAMMAR;\n\nexport namespace Interpreter {\n\n    export const IMPORT_DEFAULT_IDENTIFIER = 'Default';\n    export const IMPORT_USING_ALL = '*';\n    \n    export const STANDARD_LIBRARY: ScopeBindings = {};\n    const math: { [prop: string]: any } = {};\n    Object.getOwnPropertyNames(Math).forEach(prop => {\n        math[prop] = (Math as any)[prop];\n    });\n    STANDARD_LIBRARY['Math'] = math;\n    STANDARD_LIBRARY['Flatten'] = BuiltInFunctions.Flatten;\n    STANDARD_LIBRARY['PointCircle'] = BuiltInFunctions.PointCircle;\n    STANDARD_LIBRARY['PointGrid'] = BuiltInFunctions.PointGrid;\n    STANDARD_LIBRARY['ToLineString'] = BuiltInFunctions.ToLineString;\n    STANDARD_LIBRARY['ToMultiPoint'] = BuiltInFunctions.ToMultiPoint;\n    STANDARD_LIBRARY['ToPolygon'] = BuiltInFunctions.ToPolygon;\n    STANDARD_LIBRARY['ToGeometryCollection'] = BuiltInFunctions.ToGeometryCollection;\n    STANDARD_LIBRARY['_Rotate'] = BuiltInFunctions.Rotate;\n    STANDARD_LIBRARY['_Round'] = BuiltInFunctions.Round;\n\n    export const createGlobalScope = () => new Scope(undefined, undefined, STANDARD_LIBRARY);\n        \n    export function evaluateInput(input: string, initialScope?: Scope): any {\n        const GLOBAL_SCOPE = createGlobalScope();\n        let currentScope = initialScope || GLOBAL_SCOPE;\n        const grammar = ohm.grammar(grammarString);\n        const semantics = grammar.createSemantics();\n        semantics.addOperation('eval', {\n            stringLiteral(_leftQuote, str, _rightQuote) {\n                return str.sourceString;\n            },\n            ImportAllExpression(exp) {\n                const ret = exp.eval();\n                if (ret) {\n                    // Return data import\n                    return ret;\n                }\n\n                // Return function import object\n                const importObj = currentScope.useImports();\n                return importObj;\n            },\n            ImportUsingExpression(importAllExp, _keyword, identifierList) {\n                importAllExp.eval();\n                const identifiers = identifierList.eval();\n                let importObj;\n                if (identifiers === IMPORT_USING_ALL) {\n                    importObj = currentScope.useNamedImports(Object.keys(currentScope.availableBindings));\n                } else {\n                    importObj = currentScope.useNamedImports(identifiers);\n                }\n                return importObj;\n            },\n            ImportUsingAllParams(_) {\n                return IMPORT_USING_ALL;\n            },\n            ImportExternalExp(_keyword, importUri) {\n                const uri:string  = importUri.eval();\n\n                let data: string;\n                if (uri.startsWith('http://') || uri.startsWith('https://')) {\n                    data = syncFetch(uri).text();\n                } else {\n                    data = readFileSync(uri, 'utf8');\n                }\n                currentScope = currentScope.push();\n                let ret = undefined;\n                let bindings: ScopeBindings | undefined = undefined;\n                try {\n                    ret = convertToGeometry(JSON.parse(data));\n                } catch {\n                    try {\n                        const libRet = evaluateInput(data, currentScope);\n                        bindings = {};\n                        bindings[IMPORT_DEFAULT_IDENTIFIER] = libRet;\n                    } catch {\n                        throw new Error(`Unable to import file: ${uri}`);\n                    }\n                }\n                currentScope = currentScope.pop(bindings) || GLOBAL_SCOPE;\n                return ret;\n            },\n            ImportFunctionExp(_keyword, importFn) {\n                importFn.eval();\n            },\n            IfThenElseExp(_if, c, _then, exp1, _else, exp2) {\n                const condition = c.eval();\n                if (condition) {\n                    return exp1.eval();\n                }\n                return exp2.eval();\n            },\n            booleanValue(val) {\n                const value = val.sourceString.toLocaleLowerCase();\n                if (value === 'true') {\n                    return true;\n                }\n                if (value === 'false') {\n                    return false;\n                }\n                throw new Error(`Invalid boolean value: ${val.sourceString}`);\n            },\n            EqualityExp(v1, op, v2) {\n                const value1 = v1.eval();\n                const operator = op.sourceString;\n                const value2 = v2.eval();\n                switch (operator.trim().toLocaleLowerCase()) {\n                    case \"==\":\n                        return value1 === value2;\n                    case \"!=\":\n                        return value1 !== value2;\n                    case \"and\":\n                        return value1 && value2;\n                    case \"or\":\n                        return value1 || value2;\n                }\n                throw new Error(`Operator not supported: ${operator}`);\n            },\n            NotExp(_, exp) {\n                return !exp.eval();\n            },\n            geometryKeyword(keyword) {\n                return keyword.sourceString;\n            },\n            CompareExp(v1, op, v2) {\n                const value1 = v1.eval();\n                if (!isNumber(value1)) {\n                    throw new Error(`Expected a number for ${v1.sourceString} but got: ${toString(value1)}`)\n                }\n                const operator = op.sourceString;\n                const value2 = v2.eval();\n                if (!isNumber(value2)) {\n                    throw new Error(`Expected a number for ${v2.sourceString} but got: ${toString(value2)}`)\n                }\n                switch (operator.trim()) {\n                    case \"<\":\n                        return value1 < value2;\n                    case \"<=\":\n                        return value1 <= value2;\n                    case \">\":\n                        return value1 > value2;\n                    case \">=\":\n                        return value1 >= value2;\n                }\n                throw new Error(`Operator not supported: ${operator}`);\n            },\n            ConcatExp(g1, _op, g2) {\n                const geom1 = g1.eval();\n                const geom2 = g2.eval();\n\n                const type1 = getGeometryType(geom1);\n                const type2 = getGeometryType(geom2);\n                if (!type1 || !type2) {\n                    throw new Error(`Expected geometry types for concatenation but found geom1: ${toString(geom1)} and geom2: ${toString(geom2)}`);\n                }\n                \n                if (type1 === type2) {\n\n                    const list1: any[] = getArrayLikeItems(geom1);\n                    const list2: any[] = getArrayLikeItems(geom2);\n                    \n                    // Point collections\n                    if (\n                        type1 === GeometryType.LineString || \n                        type1 === GeometryType.MultiPoint || \n                        type1 === GeometryType.GeometryCollection     \n                    ) {\n                        const combined = list1.concat(list2);\n                        if (type1 === GeometryType.LineString) {\n                            return turf.lineString(combined).geometry;\n                        }\n                        if (type1 === GeometryType.MultiPoint) {\n                            return turf.multiPoint(combined).geometry;\n                        }\n                        if (type1 === GeometryType.GeometryCollection) {\n                            return turf.geometryCollection(combined).geometry;\n                        }\n                    }\n                }\n                \n                if (\n                    type1 === GeometryType.LineString || \n                    type1 === GeometryType.MultiPoint   \n                ) {\n                    const list1: any[] = getArrayLikeItems(geom1);\n                    let list2: any;\n                    if (\n                        type2 === GeometryType.LineString || \n                        type2 === GeometryType.MultiPoint   \n                    ) {\n                        list2 = getArrayLikeItems(geom2);\n                    } else {\n                        if (type2 === GeometryType.Point) {\n                            list2 = [geom2.coordinates];\n                        }\n                    }\n                    if (list2) {\n                        const combined = list1.concat(list2);\n                        if (type1 === GeometryType.LineString) {\n                            return turf.lineString(combined).geometry;\n                        }\n                        if (type1 === GeometryType.MultiPoint) {\n                            return turf.multiPoint(combined).geometry;\n                        }\n                        if (type1 === GeometryType.GeometryCollection) {\n                            return turf.geometryCollection(combined).geometry;\n                        }\n                    }\n                }\n\n                if (type1 === GeometryType.GeometryCollection) {\n                    return turf.geometryCollection(geom1.geometries.concat([geom2])).geometry;\n                }\n\n                if (type2 === GeometryType.GeometryCollection) {\n                    return turf.geometryCollection([geom1].concat(...geom2.geometries)).geometry;\n                }\n\n                return turf.geometryCollection([geom1, geom2]).geometry;\n            },\n            PipeExp(a, op, f) {\n                const operator = op.sourceString;\n                const val = a.eval();\n                const fn = f.eval();\n\n                if (operator === '|') {\n                    return fn(val);\n                }\n\n                if (operator === '|*') {\n                    return transform(val, fn);\n                }\n\n                const list: any[] = getArrayLikeItems(val);\n                let listFn: any;\n                switch (operator) {\n                    case '||':\n                        listFn = Array.prototype.map;\n                        break;\n                    case '|~':\n                        listFn = Array.prototype.filter;\n                        break;\n                    case '|>':\n                        listFn = Array.prototype.reduce;\n                        break;\n                    default:\n                        throw new Error(`Operator ${operator} not supported`)\n                }\n\n                if (isGeometryType(GeometryType.GeometryCollection, val)) {\n                    const mappedList = listFn.call(list, fn);\n                    if (isAnyGeometryType(mappedList)) {\n                        return mappedList;\n                    }\n                    return turf.geometryCollection(mappedList).geometry;\n                }\n\n                if (isGeometryType(GeometryType.LineString, val)) {\n                    let mappedList = listFn.call(\n                        list.map(coords => turf.point(coords).geometry),\n                        fn\n                    );\n                    if (isAnyGeometryType(mappedList)) {\n                        return mappedList;\n                    }\n                    mappedList = mappedList.map((v: any) => v.coordinates);\n                    return turf.lineString(mappedList).geometry;\n                }\n\n                if (isGeometryType(GeometryType.MultiPoint, val)) {\n                    let mappedList = listFn.call(\n                        list.map(coords => turf.point(coords).geometry),\n                        fn\n                    );\n                    if (isAnyGeometryType(mappedList)) {\n                        return mappedList;\n                    }\n                    mappedList = mappedList.map((v: any) => v.coordinates);\n                    return turf.multiPoint(mappedList).geometry;\n                }\n\n                // TODO -- Multi line types (Polygon, MultiLineString)\n\n                throw Error(`Error mapping values to geometries`);\n            },\n            TopLevel(scopedExpressions, _end) {\n                let lastValue = scopedExpressions.eval();\n                return lastValue;\n            },\n            GenerateExp(_keyword, numExp, valueExp) {\n                const num = numExp.eval();\n                if (!Number.isInteger(num) && typeof num !== 'function') {\n                    throw new Error(`Expected integer but got: ${toString(num)}`);\n                }\n                let value = valueExp.eval();\n                let mapFn;\n                if (typeof value === 'function') {\n                    mapFn = value;\n                } else if (isAnyGeometryType(value)) {\n                    mapFn = () => value;\n                } else {\n                    throw new Error(`Expected geometry type or function but got: ${toString(value)}`);\n                }\n                const items: any[] = [];\n                if (typeof num === 'function') { \n                    let i = 0;\n                    let condition = num(i);\n                    while(condition) {\n                        const result = mapFn(i);\n                        if (!isAnyGeometryType(result)) {\n                            throw new Error(`Expected geometry type return value but got: ${toString(result)}`);\n                        }\n                        items.push(result);\n                        condition = num(++i);\n                    }\n                } else {\n                    for (let i=0; i<num; i++) {\n                        const result = mapFn(i);\n                        if (!isAnyGeometryType(result)) {\n                            throw new Error(`Expected geometry type return value but got: ${toString(result)}`);\n                        }\n                        items.push(result);\n                    }\n                }\n                return turf.geometryCollection(items).geometry;\n            },\n            FunctionCallExp(callable, p) {\n                const fn = callable.eval();\n                const params = p.eval();\n                if (!fn) {\n                    throw new Error(`${callable.sourceString} is: ${fn}`);\n                }\n                const value = fn(...params);\n                return value;\n            },\n            AccessibleExp_method(val, _accessOp, prop, optionalParams: ohm.Node) {\n                const value = val.eval();\n                const identifier = prop.sourceString;\n                const isInvocation = optionalParams.children.length > 0;\n                const parameters = isInvocation ? optionalParams.children.map(c => c.eval())[0] : [];\n\n                // Function type accessor\n                if (typeof value === 'function') {\n                    if (identifier === 'bind') {\n                        return value.bind(undefined, ...parameters)\n                    }\n                    throw new OperationNotSupported(`Method ${identifier} not supported on function type`);\n                }\n                \n                // Geometry type accessor\n                if (isAnyGeometryType(value)) {\n                    return geometryAccessor(val, prop, parameters);\n                }\n\n                // Object type accessor\n                const resolvedValue = value[identifier];\n                if (typeof resolvedValue === 'function' && isInvocation) {\n                    return resolvedValue(...parameters);\n                }\n                return resolvedValue;\n            },\n            Invocation(_leftParen, list, _rightParen) {\n                return list.asIteration().children.map(c => c.eval());\n            },\n            FunctionExp(p, _, body) {\n                let params = p.eval();\n                params = Array.isArray(params) ? params : [params];\n                let fnScope = currentScope;\n                const fn = function(...values: any[]) {\n                    // Create new scope per function call.\n                    currentScope = currentScope.push({...fnScope.bindings});\n                    params.forEach((paramName: any, index: number) => {\n                        currentScope.store(paramName, values[index], undefined, false)\n                    });\n                    const ret = body.eval();\n                    const defaultBindings: ScopeBindings = {};\n                    defaultBindings[IMPORT_DEFAULT_IDENTIFIER] = ret;\n                    currentScope = currentScope.pop(defaultBindings) || GLOBAL_SCOPE;\n                    return ret;\n                };\n                const boundFn = fn.bind(currentScope);\n                boundFn.toString = function() { return `Function(${p.sourceString} => ${body.sourceString})` }\n                return boundFn;\n            },\n            FunctionParameters_multipleParams(_leftParen, identifierList, _rightParen) {\n                const params = identifierList.asIteration().children.map(c => c.sourceString);\n                return params;\n            },\n            FunctionParameters_single(identifier) {\n                return [identifier.sourceString];\n            },\n            FunctionTextExp_keyword(_keyword, _leftParen, exp, _rightParen) {\n                return exp.eval();\n            },\n            id(first, rest) {\n                const key = first.sourceString + rest.sourceString;\n                return currentScope.resolve(key);\n            },\n            AssignmentExp(exportKeyword, letKeyword, identifier, _operator, value) {\n                const isPublic = !!(exportKeyword?.children?.length);\n                const isLet = !!(letKeyword?.children?.length);\n                const variableName = identifier.sourceString;\n                const variableValue = value.eval();\n                currentScope.store(variableName, variableValue, { public: isPublic }, !isLet);\n                return variableValue;\n\n            },\n            ScopedExpressions_list(list) {\n                const expressions = list.asIteration().children.map(c => c.eval());\n                return expressions[expressions.length - 1];\n            },\n            GeneralExpression_rightComment(exp, _) {\n                return exp.eval();\n            },\n            GeneralExpression_leftComment(_, exp) {\n                return exp.eval();\n            },\n            Paren(_leftParen, exp, _rightParen) {\n                return exp.eval();\n            },\n            OptionallyParen_paren(_leftParen, exp, _rightParen) {\n                return exp.eval();\n            },\n            OptionallyBraced_brace(_leftBrace, exp, _rightBrace) {\n                return exp.eval();\n            },\n            GeometryTaggedText(_keyword, exp) {\n                return exp.eval();\n            },\n            GeometryCollectionText_present(_leftParen, list, _rightParen) {\n                const geometries = ((list || []) as any).asIteration().children.map((c: any) => c.eval());\n                return turf.geometryCollection(geometries).geometry;\n            },\n            MultiPolygonText_present(_leftParen, list, _rightParen) {\n                const polygons = list.asIteration().children.map(c => c.eval());\n                return turf.multiPolygon(polygons.map(p => p.coordinates)).geometry;\n            },\n            MultiLineStringText_present(_leftParen, list, _rightParen) {\n                const lineStrings = list.asIteration().children.map(c => c.eval());\n                return turf.multiLineString(lineStrings.map(p => p.coordinates)).geometry;\n            },\n            MultiPointText_present(_leftParen, list, _rightParen) {\n                const points = list.eval();\n                return turf.multiPoint(points.map((p: any) => p.coordinates)).geometry;\n            },\n            PolygonText_present(_leftParen, list, _rightParen) {\n                const points = list.asIteration().children.map(c => c.eval());\n                return turf.polygon(points.map(p => p.coordinates)).geometry;\n            },\n            LineStringText_present(_leftParen, list, _rightParen) {\n                const points = list.eval();\n                return turf.lineString(points.map((p: any) => p.coordinates)).geometry;\n            },\n            PointList(list) {\n                return list.asIteration().children.map(c => c.eval());\n            },\n            PointTaggedText(_, point) {\n                return point.eval();\n            },\n            PointText_present(_leftParen, point, _rightParen) {\n                return point.eval();\n            },\n            Point(x, y) {\n                return turf.point([x.eval(), y.eval()]).geometry;\n            },\n            ArithmeticAdd_plus(a, _, b) {\n                const result = arithmeticOperationExp(a, b, (a, b) => a + b);\n                if (result !== undefined) {\n                    return result;\n                }\n                throw new OperationNotSupported(`${toString(a.eval())} + ${toString(b.eval())}`);\n            },\n            ArithmeticAdd_minus(a, _, b) {\n                const result = arithmeticOperationExp(a, b, (a, b) => a - b);\n                if (result !== undefined) {\n                    return result;\n                }\n                throw new OperationNotSupported(`${toString(a.eval())} - ${toString(b.eval())}`);\n            },\n            ArithmeticMul_times(a, _, b) {\n                const result = arithmeticOperationExp(a, b, (a, b) => a * b);\n                if (result !== undefined) {\n                    return result;\n                }\n                throw new OperationNotSupported(`${toString(a.eval())} * ${toString(b.eval())}`);\n            },\n            ArithmeticMul_divide(a, _, b) {\n                const result = arithmeticOperationExp(a, b, (a, b) => a / b);\n                if (result !== undefined) {\n                    return result;\n                }\n                throw new OperationNotSupported(`${toString(a.eval())} / ${toString(b.eval())}`);\n            },\n            ArithmeticMul_mod(a, _, b) {\n                const result = arithmeticOperationExp(a, b, (a, b) => a % b);\n                if (result !== undefined) {\n                    return result;\n                }\n                throw new OperationNotSupported(`${toString(a.eval())} % ${toString(b.eval())}`);\n            },\n            ArithmeticExp_power(a, _, b) {\n                const result = arithmeticOperationExp(a, b, (a, b) => Math.pow(a, b));\n                if (result !== undefined) {\n                    return result;\n                }\n                throw new OperationNotSupported(`${toString(a.eval())} ^ ${toString(b.eval())}`);\n            },\n            ArithmeticPri_paren(_l, exp, _r) {\n                return exp.eval();\n            },\n            exactNumericLiteral_decimalWithWholeNumber(whole, _, decimal) {\n                return parseFloat(`${whole.sourceString}.${decimal.sourceString}`);\n            },\n            exactNumericLiteral_decimalWithoutWholeNumber(_, decimal) {\n                return parseFloat(`.${decimal.sourceString}`);\n            },\n            exactNumericLiteral_wholeNumber(whole) {\n                return parseInt(`${whole.sourceString}`);\n            },\n            approximateNumericLiteral(mantissa, e, exponent) {\n                return parseFloat(`${mantissa.eval()}${e}${exponent.eval()}`);\n            },\n            signedNumericLiteral_signPresent(sign, numericLiteral) {\n                return parseFloat(`${sign.sourceString}${numericLiteral.eval()}`);\n            },\n            signedNumericLiteral_signMissing(numericLiteral) {\n                return numericLiteral.eval();\n            },\n            comment(_a, _b, _c, _d, _e) {\n                return UNIT;\n            },\n            emptySet(_val) {\n                return UNIT;\n            }\n        });\n    \n        const matchResult = grammar.match(input);\n        if (matchResult.message) {\n            console.error(`Message: ${matchResult.message}`)\n        }\n        const sem = semantics(matchResult);\n        const result = sem.eval();\n        return result;\n    }\n    \n}","export type GeoJSON = any; // TODO -- use GeoJSON type\n\nexport enum GeometryType {\n    Point = 'Point',\n    LineString = 'LineString',\n    Polygon = 'Polygon',\n    MultiPoint = 'MultiPoint',\n    MultiLineString = 'MultiLineString',\n    MultiPolygon = 'MultiPolygon',\n    GeometryCollection = 'GeometryCollection'\n}\n\nexport type Unit = null;\nexport const UNIT: Unit = null;\n\n","import * as turf from '@turf/turf';\n\nimport { GeometryType } from \"./types\";\nimport { Point } from 'geojson';\n\nexport const isAnyGeometryType = (value: any) => {\n    const types = Object.values(GeometryType);\n    for (const type of types) {\n        if (isGeometryType(type, value)) {\n            return true;\n        }\n    }\n    return false;\n}\n\nexport const isGeometryType = (type: GeometryType, ...values: any) => {\n    for (const value of values) {\n        const isType = typeof value === 'object' &&\n            value?.type === type ||\n            value?.geometry?.type === type;\n        if (!isType) {\n            return false;\n        }\n    }\n    return true;\n};\n\nexport const getGeometryType = (value: any, isForDisplay = false): GeometryType | undefined => {\n    if(typeof value === 'object') {\n        const type = value?.geometry?.type || value?.type\n        if (isForDisplay && type === GeometryType.GeometryCollection) {\n            return GeometryType.GeometryCollection;\n        }\n        return type;\n    }\n    return undefined;\n}\n\n\nexport const isAGeometryType = (value: any, ...types: GeometryType[]) => {\n    for (const type of types) {\n        if(isGeometryType(type, value)) {\n            return true;\n        }\n    }\n    return false;\n};\n\nexport const getArrayLikeItems = (value: any) => {\n    if (\n        isGeometryType(GeometryType.LineString, value) ||\n        isGeometryType(GeometryType.MultiPoint, value)\n    ) {\n        return value.coordinates;\n    } else if (isGeometryType(GeometryType.GeometryCollection, value)) {\n        return value.geometries;\n    }\n    return undefined;\n};\n\nexport const isNumber = (...values: any) => {\n    return isType('number', ...values);\n}\n\nexport const isString = (...values: any) => {\n    return isType('string', ...values);\n};\n\nexport const isType = (type: string, ...values: any) => {\n    for (const value of values) {\n        const isType = typeof value === type;\n        if (!isType) {\n            return false;\n        }\n    }\n    return true;\n}\n\nexport const arithmeticOperationExp = (a: any, b: any, op: (a: any, b: any) => any) => {\n    return arithmeticOperation(a.eval(), b.eval(), op);\n}\n\nexport const arithmeticOperation = (A: any, B: any, op: (a: any, b: any) => any): any => {\n    if (isNumber(A, B)) {\n      return op(A, B);  \n    }\n    if (isNumber(A) && isAnyGeometryType(B)) {\n        return arithmeticOperation(turf.point([A, A]).geometry, B, op);\n    }\n    if (isNumber(B) && isAnyGeometryType(A)) {\n        return arithmeticOperation(A, turf.point([B, B]).geometry, op);\n    }\n    if (isGeometryType(GeometryType.Point, A, B)) {\n        return pointOperation(A, B, op);\n    }\n    if (isGeometryType(GeometryType.LineString, A, B)) {\n        return lineStringOperation(A, B, op);\n    }\n    if (isGeometryType(GeometryType.MultiPoint, A, B)) {\n        return multiPointOperation(A, B, op);\n    }\n    if (isGeometryType(GeometryType.Point, A)) {\n        return transform(B, (b => pointOperation(A, b, op)))\n    }\n    if (isGeometryType(GeometryType.Point, B)) {\n        return transform(A, (a => pointOperation(a, B, op)))\n    }\n    return undefined;\n}\n\nexport const pointOperation = (\n    A: any,\n    B: any,\n    computeFn: (a: number, b: number) => number\n) => {\n    return turf.point([\n        computeFn(A.coordinates[0], B.coordinates[0]),\n        computeFn(A.coordinates[1], B.coordinates[1]),\n    ]).geometry;\n}\n\n\nexport const lineStringOperation = (\n    A: any,\n    B: any,\n    computeFn: (a: number, b: number) => number\n) => {\n    return turf.lineString(A.coordinates.map((p: number[], index: number) => {\n        return [\n            computeFn(p[0], B.coordinates[index][0]),\n            computeFn(p[1], B.coordinates[index][1]),\n        ];\n    })).geometry;\n}\n\nexport const multiPointOperation = (\n    A: any,\n    B: any,\n    computeFn: (a: number, b: number) => number\n) => {\n    return turf.multiPoint(A.coordinates.map((p: number[], index: number) => {\n        return [\n            computeFn(p[0], B.coordinates[index][0]),\n            computeFn(p[1], B.coordinates[index][1]),\n        ];\n    })).geometry;\n}\n\nexport class OperationNotSupported extends Error {\n    constructor(message: string) {\n        super(`Operation not supported: ${message}`);\n    }\n}\n\nexport function toString(value: any) {\n    try {\n        return `${JSON.stringify(value)}`;\n    } catch (err) {\n        return `${value}`;\n    }\n}\n\nexport function transformPoints(coords: any[], coordsMapFn: (g: Point) => any): any {\n    if (!!coords) {\n        if (Array.isArray(coords)) {\n            if (coords.length > 0) {\n                const firstElement = coords[0];\n                if (Array.isArray(firstElement)) {\n                    return coords.map((c: any) => transformPoints(c, coordsMapFn));\n                } else {\n                    // coords is a point\n                    const point = turf.point(coords).geometry;\n                    return coordsMapFn(point).coordinates;\n                }\n                \n            }\n        }\n    }\n    return coords\n}\n\nexport function transform(geoJson: any, coordsMapFn: (g: Point) => any): any {    \n    if (!!geoJson) {\n\n        if (!!geoJson.features) {\n            return {\n                ...geoJson,\n                features: geoJson.features.map((feature: any) => transform(feature, coordsMapFn))\n            };\n        }\n\n        if (!!geoJson.geometries) {\n            return {\n                ...geoJson,\n                geometries: geoJson.geometries.map((geometry: any) => transform(geometry, coordsMapFn))\n            }\n        }\n\n        const geometry: any = geoJson.geometry;\n        if (!!geometry) {\n            if (geoJson.coordinates) {\n                return {\n                    ...geoJson,\n                    geometry: {\n                        ...geometry,\n                        coordinates: transformPoints(geometry.coordinates, coordsMapFn)\n                    }\n                }\n            }\n        }\n\n        const coordinates = geoJson.coordinates;\n        if (!!coordinates) {\n            return {\n                ...geoJson,\n                coordinates: transformPoints(coordinates, coordsMapFn)\n            }\n        }\n    }\n    return geoJson;\n}\n\nexport function convertToGeometry(json: any): any {\n    if (json.type === 'Feature') {\n        return json.geometry;\n    } else if (json.type === 'FeatureCollection') {\n        return {\n            type: 'GeometryCollection',\n            geometries: json.features.map((f: any) => convertToGeometry(f))\n        }\n    } else if (Array.isArray(json)) {\n        return {\n            type: 'GeometryCollection',\n            geometries: json.map((f: any) => convertToGeometry(f))\n        }\n    }\n    return json;\n}\n\nexport function geometryAccessor(v: any, p: any, params: any[]) {\n    const value = v.eval();\n    const property = p.sourceString;\n\n    if (!isAnyGeometryType(value)) {\n        throw new Error(`Expected a geometry type for value \"${v.sourceString}\" but got: ${toString(value)}`);\n    }\n\n    switch (property.toLocaleLowerCase()) {\n        case 'type':\n            if (params?.length > 1) {\n                throw new Error(`Expected no parameters for \"${property}\" for ${v.sourceString}`)\n            }\n            return getGeometryType(value, true);\n    }\n\n    if (isGeometryType(GeometryType.Point, value)) {\n        switch (property.toLocaleLowerCase()) {\n            case 'x':\n                if (params?.length > 0) {\n                    // setter\n                    if (params.length === 1) {\n                        return turf.point([\n                            params[0],\n                            value.coordinates[1]\n                        ]).geometry;\n                    }\n                    throw Error(`Expected one value in \"${property}\" setter for \"${v.sourceString}\" but got: ${toString(params)}`)\n                }\n                // getter\n                return value.coordinates[0];\n            case 'y':\n                if (params?.length > 0) {\n                    // setter\n                    if (params.length === 1) {\n                        return turf.point([\n                            value.coordinates[0],\n                            params[0]\n                        ]).geometry;\n                    }\n                    throw Error(`Expected one value in \"${property}\" setter for \"${v.sourceString}\" but got: ${toString(params)}`)\n                }\n                // getter\n                return value.coordinates[1];\n        }\n    } else if (isGeometryType(GeometryType.GeometryCollection, value)) {\n        switch (property.toLocaleLowerCase()) {\n            case 'geometryn':\n                if (params.length === 1) {\n                    const index = parseInt(params[0]);\n                    return value.geometries[index];\n                }\n                throw Error(`Expected one value in \"${property}\" setter for \"${v.sourceString}\" but got: ${toString(params)}`)\n            case 'numgeometries':\n                return value.geometries.length;\n            }\n    } else if (isGeometryType(GeometryType.LineString, value)) {\n        switch (property.toLocaleLowerCase()) {\n            case 'pointn':\n                if (params.length === 1) {\n                    const index = parseInt(params[0]);\n                    return turf.point(value.coordinates[index]).geometry;\n                }\n                throw Error(`Expected one value in \"${property}\" setter for \"${v.sourceString}\" but got: ${toString(params)}`)\n            case 'numpoints':\n                return value.coordinates.length;\n            }\n    }\n\n    throw new Error(`Property \"${property}\" not accessible on object: ${toString(value)}`);\n\n}","export interface ScopeBindings  {\n    [identifier: string]: any;\n}\n\nexport interface Metadata {\n    public: boolean;\n}\n\nexport interface ScopeBindingMetadata {\n    [identifier: string]: {\n        public?: boolean\n    };\n}\n\nexport class Scope {\n\n    bindings: ScopeBindings = {};\n    availableBindings: ScopeBindings = {};\n    private metadata: ScopeBindingMetadata = {};\n    constructor(\n        private parent?: Scope,\n        public readonly level = 0,\n        defaultBindings: ScopeBindings = {}\n    ) {\n        for (const identifier in defaultBindings) {\n            if (defaultBindings.hasOwnProperty(identifier)) {\n                this.store(identifier, defaultBindings[identifier]);\n            }\n        }\n    }\n\n    store(identifier: string, value: any, metadata?: Metadata, searchParentChain = true) {\n        let scope: Scope = this;\n        if (searchParentChain) {\n            const resolvedScope = this.resolveScope(identifier);\n            if (resolvedScope) {\n                scope = resolvedScope;\n            }\n            scope.store(identifier, value, metadata, false);\n            return;\n        }\n        this.bindings[identifier] = value;\n        if (metadata) {\n            this.metadata[identifier] = metadata;\n        }\n    };\n\n    resolveScope(identifier: string): Scope | undefined {\n        if (this.bindings.hasOwnProperty(identifier)) {\n            return this;\n        }\n\n        if (this.parent) {\n            return this.parent.resolveScope(identifier)\n        }\n\n        return undefined;\n    }\n\n    resolve(identifier: string): any {\n        const scope = this.resolveScope(identifier) ?? this\n        return scope.bindings[identifier];\n    };\n\n    push(extraBindings?: ScopeBindings): Scope {\n        return new Scope(this, this.level + 1, extraBindings);\n    }\n\n    pop(additionalBindings?: ScopeBindings): Scope | undefined {\n        const exportedBindings: ScopeBindings = {\n            ...additionalBindings\n        };\n        for (const identifier in this.metadata) {\n            const metadata = this.metadata[identifier];\n            if (metadata && metadata.public) {\n                exportedBindings[identifier] = this.bindings[identifier]\n            }\n        }\n        this.parent?.import(exportedBindings)\n        return this.parent;\n    }\n\n    import(scopeBindings: ScopeBindings) {\n        this.availableBindings = {\n            ...this.availableBindings,\n            ...scopeBindings\n        };\n    }\n\n    useImports(selectedIdentifiers?: string[]) {\n        let selectedBindings: ScopeBindings = {};\n        if (selectedIdentifiers) {\n            selectedIdentifiers.forEach(selectedIdentifier => {\n                selectedBindings[selectedIdentifier] = this.availableBindings[selectedIdentifier]\n            });\n        } else {\n            selectedBindings = this.availableBindings\n        }\n        this.availableBindings = {};\n        return selectedBindings;\n    }\n\n    useNamedImports(selectedIdentifiers: string[]) {\n        let selectedBindings: ScopeBindings = {};\n        if (selectedIdentifiers) {\n            selectedIdentifiers.forEach(selectedIdentifier => {\n                selectedBindings[selectedIdentifier] = this.availableBindings[selectedIdentifier]\n            });\n        }\n        this.bindings = {\n            ...this.bindings,\n            ...selectedBindings,\n        };\n        return selectedBindings;\n    }\n}","import * as turf from '@turf/turf';\n\nimport { OperationNotSupported, isGeometryType, toString, transform } from './helpers';\n\nimport { GeometryType } from './types';\nimport { Point } from 'geojson';\nimport booleanEqual from \"@turf/boolean-equal\"\n\nexport namespace BuiltInFunctions {\n\n    const FlattenHelper = (value: any) => {\n        const flattenedValues: any[] = [];\n        if (!!value) {\n            if (value?.type === GeometryType.GeometryCollection) {\n                for (const item of value.geometries) {\n                    flattenedValues.push(...FlattenHelper(item));\n                }\n            } else {\n                flattenedValues.push(value);\n            }\n        }\n        return flattenedValues;\n    };\n\n    export const Flatten = (value: any) => {\n        if (value?.type === GeometryType.GeometryCollection) {\n            return turf.geometryCollection(FlattenHelper(value)).geometry;\n        }\n        return value;\n    };\n\n    export const PointCircle = (radius: number, count: number) => {\n        const circlePoints: any[] = [];\n        const angleIncrement = (2 * Math.PI) / count;\n        for (let i = 0; i < count; i++) {\n            const angle = i * angleIncrement;\n            const x = radius * Math.cos(angle);\n            const y = radius * Math.sin(angle);\n            circlePoints.push(turf.point([x, y]).geometry);\n        }\n        return turf.geometryCollection(circlePoints).geometry;\n    };\n\n    export const PointGrid = (x: number, y: number, spacing = 1) => {\n        const points: any[] = [];\n        for (let i=0; i<x; i++) {\n            for (let j=0; j<y; j++) {\n                const point = turf.point([i * spacing, j * spacing]).geometry;\n                points.push(point);\n            }\n        }\n        return turf.geometryCollection(points).geometry;\n    }\n\n    const getPointsList = (value: any) => {\n        let points;\n        if (isGeometryType(GeometryType.GeometryCollection, value)) {\n            points = value?.geometries.map((f: any) => f.coordinates);\n        } else if (\n            isGeometryType(GeometryType.LineString, value) ||\n            isGeometryType(GeometryType.MultiPoint, value)\n        ) {\n            points = value?.coordinates;\n        }\n        if (points) {\n            return points;\n        }\n        throw new Error(\"Expected geometry with points list\");\n    }\n\n    export const ToLineString = (value: any) => {\n        const pointsList = getPointsList(value);\n        return turf.lineString(pointsList).geometry;\n    };\n\n    export const ToMultiPoint = (value: any) => {\n        const pointsList = getPointsList(value);\n        return turf.multiPoint(pointsList).geometry;\n    };\n\n    export const ToPolygon = (value: any) => {\n        const pointsList = getPointsList(value);\n        // Auto-close polygon\n        if (pointsList.length > 0) {\n            if (!booleanEqual(\n                turf.point(pointsList[0]).geometry,\n                turf.point(pointsList[pointsList.length - 1]).geometry\n            )) {\n                pointsList.push(pointsList[0]);\n            }\n        }\n        return turf.polygon([pointsList]).geometry;\n    };\n\n    export const ToGeometryCollection = (value: any) => {\n        const pointsList = getPointsList(value);\n        return turf.geometryCollection(pointsList.map((p: any) => turf.point(p).geometry)).geometry;\n    };\n\n    export const Rotate = (angleDegrees: number, origin: Point = turf.point([0, 0]).geometry, geometry: any) => {\n        return transform(geometry, (p: Point) => {\n            // Convert angle from degrees to radians\n            const angleRadians = (angleDegrees * Math.PI) / -180;\n            const originX = origin.coordinates[0];\n            const originY = origin.coordinates[1];\n            const x = p.coordinates[0];\n            const y = p.coordinates[1];\n\n            // Calculate the distance from the origin to the point\n            const dx = x - originX;\n            const dy = y - originY;\n\n            // Perform the rotation\n            const newX = originX + dx * Math.cos(angleRadians) - dy * Math.sin(angleRadians);\n            const newY = originY + dx * Math.sin(angleRadians) + dy * Math.cos(angleRadians);\n\n            return turf.point([newX, newY]).geometry;\n        });\n    }\n\n    export const Round = (precision = 0, val: any): any => {\n        if (typeof val === 'number') {\n            return +val.toFixed(precision);\n        }\n        if (isGeometryType(GeometryType.Point, val)) {\n            const coords = val.coordinates;\n            return turf.point([\n                Round(precision, coords[0]),\n                Round(precision, coords[1]),\n            ]).geometry;\n        }\n        throw new OperationNotSupported(`Unable to round value: ${toString(val)}`)\n    }\n}\n","export const GRAMMAR = String.raw`\nWAEL {\n\n/***************\n * WAEL syntax *\n ***************/\n\n// Top-level expressions\nTopLevel = ScopedExpressions TopLevelEnd\nTopLevelEnd = ExpressionDelimiter | end \n\n// Comments\ncomment = \"#\" commentSpace* commentText* commentSpace* commentEnd\ncommentText = ~commentEnd any\ncommentEnd = \"\\n\" | end\ncommentSpace = \" \"\n\n// Expression structure\nScopedExpressions = ListOf<GeneralExpression, ExpressionDelimiter> --list\n    | GeneralExpression\nGeneralExpression =  GeneralExpression comment --rightComment\n    | comment GeneralExpression --leftComment\n    | AssignmentExp\n    | AssignableExpression \n    | comment    \nExpressionDelimiter = expressionDelimiter\nexpressionDelimiter = \";\"\n\n// Imports\nImportExpression = AccessibleExp<ImportExpressionType>\nImportExpressionType = ImportUsingExpression | ImportAllExpression\nImportUsingExpression = ImportEitherExpression usingKeyword ImportUsingParameters\nImportUsingParameters = FunctionParameters | ImportUsingAllParams\nImportUsingAllParams = Paren<\"*\">\nImportAllExpression = ImportEitherExpression\nImportEitherExpression = ImportExternalExp | ImportFunctionExp\nImportExternalExp = importKeyword Paren<ImportExternalParamExp>\nImportExternalParamExp = stringLiteralExp | Identifier\nImportFunctionExp = importKeyword Paren<FunctionCallExp>\nimportKeyword = caseInsensitive<\"import\">\nusingKeyword = caseInsensitive<\"using\">\n\n// Exports\nexportKeyword = caseInsensitive<\"export\">\n\n// Variables\nletKeyword = caseInsensitive<\"let\">\nAssignmentExp = exportKeyword? letKeyword? Identifier assignmentOperator AssignableExpression \nAssignableExpression = \n    | ImportExpression\n    | NonArithmeticAssignableExpression\n    | ArithmeticAssignableExpression\nNonArithmeticAssignableExpression = \n    | OperationExp\n    | stringLiteralExp\nArithmeticAssignableExpression = Arithmetic<AssignableExpressionForArithmetic>\nAssignableExpressionForArithmetic = \n    | BooleanResultExp\n    | IfThenElseExp\n    | ComputedExp\n    | FunctionTextExp\n    | NumberExp\n    | AccessibleExp<GeometryExp>\n    | BooleanValue\n    | Paren<OperationExp> \nassignmentOperator = \"=\"\nComputedValue<Type> = Type | ComputedExp\nComputedExp = AccessibleExp<ComputedPrimitive>\nComputedPrimitive = FunctionCallExp | Identifier\n\nAccessibleExp<Type> = \n    | Type accessorOperator Identifier Invocation? --method\n    |