filter parse - ts

package.json

@@ -9,9 +9,10 @@
         "start:web": "yarn workspace @dbgate/web start",
         "start:sqltree": "yarn workspace @dbgate/sqltree start",
         "start:datalib": "yarn workspace @dbgate/datalib start",
+        "start:filterparser": "yarn workspace @dbgate/filterparser start",
         "start": "concurrently --kill-others-on-fail \"yarn start:api\" \"yarn start:web\"",
 
-        "lib": "concurrently --kill-others-on-fail \"yarn start:sqltree\" \"yarn start:datalib\"",
+        "lib": "concurrently --kill-others-on-fail \"yarn start:sqltree\" \"yarn start:datalib\" \"yarn start:filterparser\"",
 
         "ts:api": "yarn workspace @dbgate/api ts",
         "ts:web": "yarn workspace @dbgate/web ts",

packages/filterparser/.gitignore

@@ -0,0 +1 @@
+lib

packages/filterparser/package.json

@@ -0,0 +1,25 @@
+{
+  "version": "0.1.0",
+  "name": "@dbgate/filterparser",
+  "main": "lib/index.js",
+  "typings": "lib/index.d.ts",
+  "scripts": {
+    "prepare": "yarn build",
+    "build": "tsc",
+    "start": "tsc --watch",
+    "test": "jest"
+  },
+  "files": [
+    "lib"
+  ],
+  "devDependencies": {
+    "@dbgate/types": "^0.1.0",
+    "@types/node": "^13.7.0",
+    "typescript": "^3.7.5"
+  },
+  "dependencies": {
+    "@types/parsimmon": "^1.10.1",
+    "lodash": "^4.17.15",
+    "parsimmon": "^1.13.0"
+  }
+}

packages/filterparser/src/parseFilter.ts

@@ -0,0 +1,44 @@
+import P from 'parsimmon';
+import { FilterType } from './types';
+
+const whitespace = P.regexp(/\s*/m);
+
+function token(parser) {
+  return parser.skip(whitespace);
+}
+
+function interpretEscapes(str) {
+  let escapes = {
+    b: '\b',
+    f: '\f',
+    n: '\n',
+    r: '\r',
+    t: '\t',
+  };
+  return str.replace(/\\(u[0-9a-fA-F]{4}|[^u])/, (_, escape) => {
+    let type = escape.charAt(0);
+    let hex = escape.slice(1);
+    if (type === 'u') {
+      return String.fromCharCode(parseInt(hex, 16));
+    }
+    if (escapes.hasOwnProperty(type)) {
+      return escapes[type];
+    }
+    return type;
+  });
+}
+
+const parser = P.createLanguage({
+  expr: r => P.alt(r.string),
+
+  string: () =>
+    token(P.regexp(/"((?:\\.|.)*?)"/, 1))
+      .map(interpretEscapes)
+      .desc('string'),
+});
+
+export function parseFilter(value: string, filterType: FilterType) {
+  const ast = parser.expr.tryParse(value);
+  console.log(ast);
+  return ast;
+}

packages/filterparser/src/parserFilter.test.ts

@@ -0,0 +1,3 @@
+import parserFilter, { parseFilter } from './parseFilter';
+
+test('parse string', parseFilter('"123"', 'string'));

packages/filterparser/src/types.ts

@@ -0,0 +1,3 @@
+// import types from '@dbgate/types';
+
+export type FilterType = 'number' | 'string' | 'datetime' | 'logical';

packages/filterparser/tsconfig.json

@@ -0,0 +1,14 @@
+{
+  "compilerOptions": {
+    "target": "ES2015",
+    "module": "commonjs",
+    "declaration": true,
+    "skipLibCheck": true,
+    "outDir": "lib",
+    "preserveWatchOutput": true,
+    "esModuleInterop": true
+  },
+  "include": [
+    "src/**/*"
+  ]
+}

yarn.lock

@@ -1489,6 +1489,11 @@
   resolved "https://registry.yarnpkg.com/@types/parse-json/-/parse-json-4.0.0.tgz#2f8bb441434d163b35fb8ffdccd7138927ffb8c0"
   integrity sha512-//oorEZjL6sbPcKUaCdIGlIUeH26mgzimjBB77G6XRgnDl/L5wOnpyBGRe/Mmf5CVW3PwEBE1NjiMZ/ssFh4wA==
 
+"@types/parsimmon@^1.10.1":
+  version "1.10.1"
+  resolved "https://registry.yarnpkg.com/@types/parsimmon/-/parsimmon-1.10.1.tgz#d46015ad91128fce06a1a688ab39a2516507f740"
+  integrity sha512-MoF2IC9oGSgArJwlxdst4XsvWuoYfNUWtBw0kpnCi6K05kV+Ecl7siEeJ40tgCbI9uqEMGQL/NlPMRv6KVkY5Q==
+
 "@types/prop-types@*":
   version "15.7.3"
   resolved "https://registry.yarnpkg.com/@types/prop-types/-/prop-types-15.7.3.tgz#2ab0d5da2e5815f94b0b9d4b95d1e5f243ab2ca7"
@@ -8427,6 +8432,11 @@ parseurl@~1.3.2, parseurl@~1.3.3:
   resolved "https://registry.yarnpkg.com/parseurl/-/parseurl-1.3.3.tgz#9da19e7bee8d12dff0513ed5b76957793bc2e8d4"
   integrity sha512-CiyeOxFT/JZyN5m0z9PfXw4SCBJ6Sygz1Dpl0wqjlhDEGGBP1GnsUVEL0p63hoG1fcj3fHynXi9NYO4nWOL+qQ==
 
+parsimmon@^1.13.0:
+  version "1.13.0"
+  resolved "https://registry.yarnpkg.com/parsimmon/-/parsimmon-1.13.0.tgz#6e4ef3dbd45ed6ea6808be600ac4b9c8a44228cf"
+  integrity sha512-5UIrOCW+gjbILkjKPgTgmq8LKf8TT3Iy7kN2VD7OtQ81facKn8B4gG1X94jWqXYZsxG2KbJhrv/Yq/5H6BQn7A==
+
 pascalcase@^0.1.1:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/pascalcase/-/pascalcase-0.1.1.tgz#b363e55e8006ca6fe21784d2db22bd15d7917f14"