init

Author: Snowflake107

.gitignore

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+node_modules/
+test/
+yarn.lock

.npmignore

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+node_modules/
+test/
+.prettierignore
+.prettierrc
+.gitignore
+yarn.lock

.prettierignore

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+node_modules/
+test/

.prettierrc

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+{
+    "tabWidth": 4,
+    "useTabs": false,
+    "semi": true,
+    "singleQuote": true,
+    "printWidth": 400
+}

README.md

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+# JSQL
+Use **JSON** as **SQL**.
+
+# Installing
+
+```sh
+$ npm i --save jsql
+```
+
+> Note: This library is very new and does not support most of the statements
+
+# Example
+
+```js
+const { Database } = require("jsql");
+const db = new Database("./database.json");
+
+// creating a table
+db.prepare(`CREATE TABLE IF NOT EXISTS "DEMO" ("key" TEXT, "value" TEXT)`).run();
+
+// inserting data
+db.prepare(`INSERT INTO "DEMO" ("key","value") VALUES ("test_key", "test_value")`).run();
+
+// fetching data
+db.prepare(`SELECT * FROM "DEMO"`).run();
+
+// fetching data in limit
+db.prepare(`SELECT * FROM "DEMO" LIMIT 3`).run(); // returns 3 items if available
+
+// drop a table
+db.prepare(`DROP TABLE "DEMO"`).run();
+```

index.js

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+module.exports = {
+    Database: require("./src/jsql/Database"),
+    SQLParser: require("./src/sql/parser"),
+    version: require("./package.json").version
+};

package.json

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+{
+  "name": "jsql",
+  "version": "1.0.0",
+  "description": "Use JSON as SQL.",
+  "main": "index.js",
+  "types": "typings/index.d.ts",
+  "scripts": {
+    "test": "cd test && node index.js",
+    "format": "prettier --write */**"
+  },
+  "author": "Snowflake107",
+  "license": "MIT",
+  "dependencies": {
+    "node-sql-parser": "^3.2.0"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/DevSnowflake/JSQL.git"
+  },
+  "keywords": [
+    "JSQL",
+    "SQL",
+    "Database",
+    "JavaScript",
+    "JSON",
+    "JSONSQL"
+  ],
+  "bugs": {
+    "url": "https://github.com/DevSnowflake/JSQL/issues"
+  },
+  "homepage": "https://github.com/DevSnowflake/JSQL#readme",
+  "devDependencies": {
+    "prettier": "^2.2.1"
+  }
+}

src/Util/create.js

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+/**
+ *
+ * @param {*} ast
+ * @param {import("../jsql/Database")} db
+ */
+module.exports = (ast, db) => {
+    if (ast.type.toLowerCase() !== 'create') throw new TypeError('invalid query type');
+    if (ast.keyword !== 'table') throw new Error(`Unsupported ${ast.keyword}`);
+    const ifne = ast.if_not_exists === 'if not exists';
+    const table = ast.table[0].table;
+
+    const col = ast.create_definitions.map((m) => ({ column: m.column.column, type: m.definition.dataType }));
+    const data = db.db;
+
+    const payload = {
+        tableName: table,
+        keys: col,
+        data: [],
+    };
+
+    if (ifne && data[payload.tableName]) return;
+
+    data[payload.tableName] = payload;
+    db.write(data);
+};

src/Util/drop.js

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+module.exports = (ast, db) => {
+    if (ast.type.toLowerCase() !== 'drop') throw new TypeError('invalid query type');
+    if (ast.keyword !== 'table') throw new Error(`Unsupported ${ast.keyword}`);
+
+    const table = ast.name[0].table;
+
+    const data = db.db;
+    if (!data[table]) return false;
+
+    delete data[table];
+    db.write(data);
+
+    return true;
+};

src/Util/insert.js

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+/**
+ *
+ * @param {*} ast
+ * @param {import("../jsql/Database")} db
+ */
+module.exports = (ast, db) => {
+    if (ast.type.toLowerCase() !== 'insert') throw new TypeError('invalid query type');
+    const table = ast.table[0].table;
+    const data = db.db;
+    if (!data[table]) throw new Error(`Table "${table}" does not exist`);
+    const values = ast.values.find((f) => f.type === 'expr_list');
+    if (ast.columns.length !== values.value.length) throw new Error('values length mismatch');
+
+    const payload = ast.columns.map((m, i) => ({
+        key: m,
+        data: values.value[i].value,
+    }));
+
+    payload.forEach((i) => {
+        data[table].data.push(i);
+    });
+
+    db.write(data);
+};