diff --git a/CHANGELOG.md b/CHANGELOG.md index 6a19d09..dd470d6 100644 --- a/CHANGELOG.md +++ b/CHANGELOG.md @@ -3,11 +3,22 @@ This log documents significant changes for each release. This project follows [Semantic Versioning](http://semver.org/). +## [2.14.1] - 2022-03-31 +### Added +- Added a "version" field with the release version to the object exported by fhirpath.js. +### Fixed +- Previously, the `repeat` function changed the contents of the `%someVar` value + when used in a `%someVar.repeat(...)` expression. +- Previously, `a.repeat('b')` went into an infinite loop. +- The `repeat` function should no longer return duplicates. +- Optimized functions: `distinct`, `union`, `subsetOf`, `intersect`, and `repeat` + by changing complexity of the algorithm from O(n**2) to O(n). + ## [2.14.0] - 2022-03-02 ### Added - Function to get the intersection of two collections: intersect(). ### Fixed -- The distinct, union, subsetOf, and intersect functions now use +- The `distinct`, `union`, `subsetOf`, and `intersect` functions now use the "6.1.1. = (Equals)" function to compare collection items instead of using a map with JSON keys, which can affect their performance because the complexity of the algorithm has changed from O(n) to O(n**2). diff --git a/browser-build/package-json-loader.js b/browser-build/package-json-loader.js new file mode 100644 index 0000000..7d4cfc8 --- /dev/null +++ b/browser-build/package-json-loader.js @@ -0,0 +1,6 @@ +// Removes all content except version. +// When we import package.json we need only the application version. +module.exports = function loader(source) { + const { version } = JSON.parse(source); + return JSON.stringify({ version }); +}; diff --git a/browser-build/webpack.config.js b/browser-build/webpack.config.js index a34f50c..cf97c19 100644 --- a/browser-build/webpack.config.js +++ b/browser-build/webpack.config.js @@ -1,4 +1,5 @@ const CopyPlugin = require('copy-webpack-plugin'); +const path = require('path'); /** * Returns a base webpack configuration object with settings used by more than @@ -30,6 +31,14 @@ function makeBaseConfig() { ]] } } + }, + { + test: /package.json$/, + use: [ + { + loader: path.resolve('package-json-loader.js') + } + ] } ] } diff --git a/demo/package-lock.json b/demo/package-lock.json index 7382640..6c49a39 100644 --- a/demo/package-lock.json +++ b/demo/package-lock.json @@ -498,12 +498,6 @@ "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8=", "dev": true }, - 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"unicode-canonical-property-names-ecmascript": { - "version": "1.0.4", - "resolved": "https://registry.npmjs.org/unicode-canonical-property-names-ecmascript/-/unicode-canonical-property-names-ecmascript-1.0.4.tgz", - "integrity": "sha512-jDrNnXWHd4oHiTZnx/ZG7gtUTVp+gCcTTKr8L0HjlwphROEW3+Him+IpvC+xcJEFegapiMZyZe02CyuOnRmbnQ==", - "dev": true - }, - "unicode-match-property-ecmascript": { - "version": "1.0.4", - "resolved": "https://registry.npmjs.org/unicode-match-property-ecmascript/-/unicode-match-property-ecmascript-1.0.4.tgz", - "integrity": "sha512-L4Qoh15vTfntsn4P1zqnHulG0LdXgjSO035fEpdtp6YxXhMT51Q6vgM5lYdG/5X3MjS+k/Y9Xw4SFCY9IkR0rg==", - "dev": true, - "requires": { - "unicode-canonical-property-names-ecmascript": "^1.0.4", - "unicode-property-aliases-ecmascript": "^1.0.4" - } - }, - "unicode-match-property-value-ecmascript": { - "version": "1.2.0", - "resolved": "https://registry.npmjs.org/unicode-match-property-value-ecmascript/-/unicode-match-property-value-ecmascript-1.2.0.tgz", - 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"css-loader": "^1.0.0", + "css-loader": "^6.7.1", "file-loader": "^1.1.11", "html-webpack-plugin": "^3.2.0", "js-yaml": "^3.13.1", - "style-loader": "^0.21.0", + "style-loader": "^3.3.1", "webpack": "^5.11.1", "webpack-cli": "^4.9.1", "webpack-dev-server": "^4.7.3", diff --git a/package-lock.json b/package-lock.json index 05ea8ec..2e96356 100644 --- a/package-lock.json +++ b/package-lock.json @@ -1,6 +1,6 @@ { "name": "fhirpath", - "version": "2.14.0", + "version": "2.14.1", "lockfileVersion": 1, "requires": true, "dependencies": { @@ -10114,9 +10114,9 @@ } }, "minimist": { - "version": "1.2.5", - "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.5.tgz", - "integrity": "sha512-FM9nNUYrRBAELZQT3xeZQ7fmMOBg6nWNmJKTcgsJeaLstP/UODVpGsr5OhXhhXg6f+qtJ8uiZ+PUxkDWcgIXLw==", + "version": "1.2.6", + "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.6.tgz", + "integrity": "sha512-Jsjnk4bw3YJqYzbdyBiNsPWHPfO++UGG749Cxs6peCu5Xg4nrena6OVxOYxrQTqww0Jmwt+Ref8rggumkTLz9Q==", "dev": true }, "minipass": { @@ -10770,9 +10770,9 @@ }, "dependencies": { "ansi-regex": { - "version": "3.0.0", - "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-3.0.0.tgz", - "integrity": "sha1-7QMXwyIGT3lGbAKWa922Bas32Zg=", + "version": "3.0.1", + "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-3.0.1.tgz", + "integrity": "sha512-+O9Jct8wf++lXxxFc4hc8LsjaSq0HFzzL7cVsw8pRDIPdjKD2mT4ytDZlLuSBZ4cLKZFXIrMGO7DbQCtMJJMKw==", "dev": true }, "strip-ansi": { @@ -10861,9 +10861,9 @@ }, "dependencies": { "ansi-regex": { - "version": "3.0.0", - "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-3.0.0.tgz", - "integrity": "sha1-7QMXwyIGT3lGbAKWa922Bas32Zg=", + "version": "3.0.1", + "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-3.0.1.tgz", + "integrity": "sha512-+O9Jct8wf++lXxxFc4hc8LsjaSq0HFzzL7cVsw8pRDIPdjKD2mT4ytDZlLuSBZ4cLKZFXIrMGO7DbQCtMJJMKw==", "dev": true }, "strip-ansi": { @@ -10872,7 +10872,7 @@ "integrity": "sha1-qEeQIusaw2iocTibY1JixQXuNo8=", "dev": true, "requires": { - "ansi-regex": "^3.0.0" + "ansi-regex": "^3.0.1" } } } diff --git a/package.json b/package.json index f7d0a96..800bda4 100644 --- a/package.json +++ b/package.json @@ -1,6 +1,6 @@ { "name": "fhirpath", - "version": "2.14.0", + "version": "2.14.1", "description": "A FHIRPath engine", "main": "src/fhirpath.js", "dependencies": { diff --git a/src/combining.js b/src/combining.js index 52f80ca..052d009 100644 --- a/src/combining.js +++ b/src/combining.js @@ -1,11 +1,11 @@ // This file holds code to hande the FHIRPath Combining functions. const combineFns = {}; -const existence = require('./existence'); -const deepEqual = require('./deep-equal'); +const {distinctFn} = require('./filtering'); +const hashObject = require('./hash-object'); combineFns.union = function(coll1, coll2){ - return existence.distinctFn(coll1.concat(coll2)); + return distinctFn(coll1.concat(coll2)); }; combineFns.combineFn = function(coll1, coll2){ @@ -14,10 +14,29 @@ combineFns.combineFn = function(coll1, coll2){ combineFns.intersect = function(coll1, coll2) { let result = []; - if (coll1.length && coll2.length) { - result = existence.distinctFn(coll1).filter( - obj1 => coll2.some(obj2 => deepEqual(obj1, obj2)) - ); + const coll1Length = coll1.length; + let uncheckedLength = coll2.length; + + if (coll1Length && uncheckedLength) { + let coll2hash = {}; + coll2.forEach(item => { + const hash = hashObject(item); + if (coll2hash[hash]) { + uncheckedLength--; + } else { + coll2hash[hash] = true; + } + }); + + for (let i=0; i 0; ++i) { + let item = coll1[i]; + let hash = hashObject(item); + if (coll2hash[hash]) { + result.push(item); + coll2hash[hash] = false; + uncheckedLength--; + } + } } return result; diff --git a/src/deep-equal.js b/src/deep-equal.js index 3f3c30c..a30726e 100644 --- a/src/deep-equal.js +++ b/src/deep-equal.js @@ -24,8 +24,20 @@ function normalizeStr(x) { return x.toUpperCase().replace(/\s+/, ' '); } - -var deepEqual = function (actual, expected, opts) { +/** + * Performs a deep comparison between two values to determine if they are equal. + * When you need to compare many objects, you can use hashObject instead for + * optimization (if changes are needed here, they are likely also needed there). + * @param {any} actual - one of the comparing objects + * @param {any} expected - one of the comparing objects + * @param {Object} [opts] - comparison options + * @param {boolean} [opts.fuzzy] - false (by default), if comparing objects for + * equality (see https://hl7.org/fhirpath/#equals). + * true, if comparing objects for equivalence + * (see https://hl7.org/fhirpath/#equivalent). + * @return {boolean} + */ +function deepEqual(actual, expected, opts) { actual = util.valData(actual); expected = util.valData(expected); if (!opts) opts = {}; @@ -96,7 +108,7 @@ var deepEqual = function (actual, expected, opts) { // accounts for both named and indexed properties on Arrays. return objEquiv(actual, expected, opts); } -}; +} function isUndefinedOrNull(value) { return value === null || value === undefined; diff --git a/src/existence.js b/src/existence.js index ee1d95f..bc774b8 100644 --- a/src/existence.js +++ b/src/existence.js @@ -2,9 +2,9 @@ // specification). const util = require("./utilities"); -const filtering = require("./filtering"); +const {whereMacro, distinctFn} = require("./filtering"); const misc = require("./misc"); -const deepEqual = require('./deep-equal'); +const hashObject = require('./hash-object'); const engine = {}; engine.emptyFn = util.isEmpty; @@ -17,7 +17,7 @@ engine.notFn = function(coll) { engine.existsMacro = function(coll, expr) { var vec = coll; if (expr) { - return engine.existsMacro(filtering.whereMacro(coll, expr)); + return engine.existsMacro(whereMacro(coll, expr)); } return !util.isEmpty(vec); }; @@ -73,12 +73,14 @@ engine.anyFalseFn = function(x) { * Returns true if coll1 is a subset of coll2. */ function subsetOf(coll1, coll2) { - let rtn = coll1.length <= coll2.length; - if (rtn) { - for (let p=0, pLen=coll1.length; p deepEqual(obj1, util.valData(obj2))); - } + const coll1Length = coll1.length; + let rtn = coll1Length <= coll2.length; + if (rtn && coll1Length) { + const c2Hash = coll2.reduce((hash, item) => { + hash[hashObject(item)] = true; + return hash; + }, {}); + rtn = !coll1.some(item => !c2Hash[hashObject(item)]); } return rtn; } @@ -92,20 +94,7 @@ engine.supersetOfFn = function(coll1, coll2) { }; engine.isDistinctFn = function(x) { - return [x.length === engine.distinctFn(x).length]; -}; - -engine.distinctFn = function(x) { - let unique = []; - if (x.length > 0) { - x = x.concat(); - do { - let xObj = x.shift(); - unique.push(xObj); - x = x.filter(o => !deepEqual(xObj, o)); - } while (x.length); - } - return unique; + return [x.length === distinctFn(x).length]; }; module.exports = engine; diff --git a/src/fhirpath.js b/src/fhirpath.js index a8bd379..ae56a77 100644 --- a/src/fhirpath.js +++ b/src/fhirpath.js @@ -28,6 +28,7 @@ // for strings and numbers // we can make dispatching params type dependent - let see +const {version} = require('../package.json'); const parser = require("./parser"); const util = require("./utilities"); require("./polyfill"); @@ -72,7 +73,7 @@ engine.invocationTable = { subsetOf: {fn: existence.subsetOfFn, arity: {1: ["AnyAtRoot"]}}, supersetOf: {fn: existence.supersetOfFn, arity: {1: ["AnyAtRoot"]}}, isDistinct: {fn: existence.isDistinctFn}, - distinct: {fn: existence.distinctFn}, + distinct: {fn: filtering.distinctFn}, count: {fn: aggregate.countFn}, where: {fn: filtering.whereMacro, arity: {1: ["Expr"]}}, extension: {fn: filtering.extension, arity: {1: ["String"]}}, @@ -717,6 +718,7 @@ function compile(path, model) { } module.exports = { + version, parse, compile, evaluate, diff --git a/src/filtering.js b/src/filtering.js index 55a3534..0c2824e 100644 --- a/src/filtering.js +++ b/src/filtering.js @@ -6,6 +6,7 @@ */ const util = require('./utilities'); const {TypeInfo, ResourceNode} = require('./types'); +const hashObject = require('./hash-object'); var engine = {}; engine.whereMacro = function(parentData, expr) { @@ -43,18 +44,22 @@ engine.selectMacro = function(data, expr) { engine.repeatMacro = function(parentData, expr) { if(parentData !== false && ! parentData) { return []; } - var res = []; - var items = parentData; - - var next = null; - var lres = null; - while (items.length != 0) { - next = items.shift(); - lres = expr(next); - if(lres){ - res = res.concat(lres); - items = items.concat(lres); - } + let res = []; + const unique = {}; + const length = parentData.length; + for(let i = 0; i < length; ++i) { + let newItems = parentData[i]; + do { + newItems = expr(newItems) + .filter(item => { + const key = hashObject(item); + const isUnique = !unique[key]; + if (isUnique) { + unique[key] = true; + } + return isUnique; + }); + } while (res.length < res.push.apply(res, newItems)); } return res; }; @@ -98,5 +103,22 @@ engine.ofTypeFn = function(coll, typeInfo) { }); }; +engine.distinctFn = function(x) { + let unique = []; + // Since this requires a deep equals, use a hash table (on JSON strings) for + // efficiency. + if (x.length > 0) { + let uniqueHash = {}; + for (let i=0, len=x.length; i { + const v = value[key]; + o[key] = prepareObject(v); + return o; + }, {}); + } + + return value; +} + +module.exports = hashObject; diff --git a/src/numbers.js b/src/numbers.js index 3eb335f..f5225cf 100644 --- a/src/numbers.js +++ b/src/numbers.js @@ -42,9 +42,9 @@ const PRECISION_STEP = 1e-8; /** * Rounds a number to the nearest multiple of PRECISION_STEP. */ -function roundToMaxPrecision(x) { +const roundToMaxPrecision = numberFns.roundToMaxPrecision = function (x) { return Math.round(x/PRECISION_STEP)*PRECISION_STEP; -} +}; /** * Determines numbers equivalence @@ -79,4 +79,4 @@ numberFns.isEqual = function(actual, expected) { return roundToMaxPrecision(actual) === roundToMaxPrecision(expected); }; -module.exports = numberFns; \ No newline at end of file +module.exports = numberFns; diff --git a/test/api.test.js b/test/api.test.js index 5d97662..53fc1c0 100644 --- a/test/api.test.js +++ b/test/api.test.js @@ -1,5 +1,6 @@ const fhirpath = require('../src/fhirpath'); const r4_model = require('../fhir-context/r4'); +const _ = require('lodash'); describe('compile', () => { it('should accept a model object', () => { @@ -52,4 +53,20 @@ describe('evaluate', () => { ); expect(result).toStrictEqual([true]); }); + + it('should not change the context variable during expression evaluation', () => { + const someVar = fhirpath.evaluate( + require('../test/resources/quantity-example.json'), + 'QuestionnaireResponse' + ); + const someVarOrig = _.cloneDeep(someVar); + let result = fhirpath.evaluate( + {}, + "%someVar.repeat(item).linkId", + {someVar}, + r4_model + ); + expect(result).toEqual(['1', '2', '3']); + expect(someVar).toStrictEqual(someVarOrig); + }) }); diff --git a/test/cases/5.1_existence.yaml b/test/cases/5.1_existence.yaml index 13d7cff..82050dc 100644 --- a/test/cases/5.1_existence.yaml +++ b/test/cases/5.1_existence.yaml @@ -336,6 +336,15 @@ tests: - prop1: 5 prop2: 6 + - desc: '** should use year-to-month conversion factor (https://hl7.org/fhirpath/#equals)' + expression: (1 year).combine(12 months).distinct() + result: + - 1 year + + - desc: '** should compare quantities for equality (https://hl7.org/fhirpath/#equals)' + expression: (3 'min').combine(180 seconds).distinct() + result: + - 3 'min' - desc: '5.1.13. count() : integer' # Returns a collection with a single value which is diff --git a/test/cases/5.2.3_repeat.yaml b/test/cases/5.2.3_repeat.yaml index 7e19a83..e3d88e1 100644 --- a/test/cases/5.2.3_repeat.yaml +++ b/test/cases/5.2.3_repeat.yaml @@ -1,6 +1,8 @@ tests: - expression: Questionnaire.repeat(item).linkId result: ["1", "2", "1.1", "2.1", "1.1.1", "2.1.2", "1.1.1.1", "1.1.1.2", "1.1.1.1.1", "1.1.1.1.2"] + - expression: Questionnaire.combine(Questionnaire).repeat(item).linkId + result: ["1", "2", "1.1", "2.1", "1.1.1", "2.1.2", "1.1.1.1", "1.1.1.2", "1.1.1.1.1", "1.1.1.1.2"] subject: resourceType: Questionnaire id: '3141' diff --git a/test/cases/5.2_filtering_and_projection.yaml b/test/cases/5.2_filtering_and_projection.yaml index e27a2e4..e788a2a 100644 --- a/test/cases/5.2_filtering_and_projection.yaml +++ b/test/cases/5.2_filtering_and_projection.yaml @@ -66,10 +66,20 @@ tests: # Questionnaire.descendants().select(group | question) # which would find any descendants called group or question, not just the ones nested inside other group or question elements. - desc: '* traverse tree' - - desc: '** find all true values in nested coll' - - desc: 'TODO FIX INF LOOP' - # expression: Functions.coll1.colltrue.repeat(true) - # result: [true, true, true] + - desc: '** should not result in an infinite loop 1' + expression: Functions.coll1.colltrue.repeat(true) + result: [true] + - desc: '** should not result in an infinite loop 2' + expression: (1 | 2).repeat('item') + result: ['item'] + - desc: '** should use year-to-month conversion factor (https://hl7.org/fhirpath/#equals)' + expression: (1 year).combine(12 months).repeat($this) + result: + - 1 year + - desc: '** should compare quantities for equality (https://hl7.org/fhirpath/#equals)' + expression: (3 'min').combine(180 seconds).repeat($this) + result: + - 3 'min' - desc: '** find all attrs' expression: Functions.repeat(repeatingAttr).count() result: [2] @@ -80,7 +90,7 @@ tests: - desc: '** find all true values in nested coll' expression: Functions.coll1.colltrue.repeat(attr) - result: [true, true, true] + result: [true] - desc: '** find non-exists value' expression: Functions.coll1.repeat(nothing) diff --git a/test/cases/5.3_subsetting.yaml b/test/cases/5.3_subsetting.yaml index 2c20bb5..c761a2a 100644 --- a/test/cases/5.3_subsetting.yaml +++ b/test/cases/5.3_subsetting.yaml @@ -178,6 +178,16 @@ tests: - prop1: 1 prop2: 2 + - desc: '** should use year-to-month conversion factor (https://hl7.org/fhirpath/#equals)' + expression: (1 year).combine(12 months).intersect(12 months) + result: + - 1 year + + - desc: '** should compare quantities for equality (https://hl7.org/fhirpath/#equals)' + expression: (3 'min').combine(180 seconds).intersect(180 seconds) + result: + - 3 'min' + subject: resourceType: Functions attrempty: [] @@ -225,11 +235,15 @@ subject: - attr: 4 days objects: group1: + - prop1: 1 + prop2: 2 - prop1: 1 prop2: 2 - prop1: 3 prop2: 4 group2: + - prop2: 2 + prop1: 1 - prop2: 2 prop1: 1 - prop1: 5 diff --git a/test/cases/5.4_combining.yaml b/test/cases/5.4_combining.yaml index 78aa85c..7107c87 100644 --- a/test/cases/5.4_combining.yaml +++ b/test/cases/5.4_combining.yaml @@ -20,6 +20,16 @@ tests: expression: Functions.attrdouble | Functions.coll1.coll2.attr result: [1, 2, 3, 4, 5] + - desc: '** should use year-to-month conversion factor (https://hl7.org/fhirpath/#equals)' + expression: (1 year | 12 months) + result: + - 1 year + + - desc: '** should compare quantities for equality (https://hl7.org/fhirpath/#equals)' + expression: (3 'min' | 180 seconds) + result: + - 3 'min' + - desc: '** should not depend on the order of properties in an object' expression: Functions.objects.group1 | Functions.objects.group2 result: