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76
node_modules/@libsql/hrana-client/lib-esm/stmt.js
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node_modules/@libsql/hrana-client/lib-esm/stmt.js
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import { sqlToProto } from "./sql.js";
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import { valueToProto } from "./value.js";
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/** A statement that can be evaluated by the database. Besides the SQL text, it also contains the positional
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* and named arguments. */
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export class Stmt {
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/** The SQL statement text. */
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sql;
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/** @private */
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_args;
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/** @private */
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_namedArgs;
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/** Initialize the statement with given SQL text. */
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constructor(sql) {
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this.sql = sql;
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this._args = [];
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this._namedArgs = new Map();
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}
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/** Binds positional parameters from the given `values`. All previous positional bindings are cleared. */
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bindIndexes(values) {
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this._args.length = 0;
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for (const value of values) {
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this._args.push(valueToProto(value));
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}
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return this;
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}
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/** Binds a parameter by a 1-based index. */
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bindIndex(index, value) {
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if (index !== (index | 0) || index <= 0) {
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throw new RangeError("Index of a positional argument must be positive integer");
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}
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while (this._args.length < index) {
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this._args.push(null);
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}
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this._args[index - 1] = valueToProto(value);
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return this;
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}
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/** Binds a parameter by name. */
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bindName(name, value) {
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this._namedArgs.set(name, valueToProto(value));
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return this;
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}
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/** Clears all bindings. */
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unbindAll() {
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this._args.length = 0;
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this._namedArgs.clear();
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return this;
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}
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}
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export function stmtToProto(sqlOwner, stmt, wantRows) {
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let inSql;
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let args = [];
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let namedArgs = [];
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if (stmt instanceof Stmt) {
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inSql = stmt.sql;
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args = stmt._args;
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for (const [name, value] of stmt._namedArgs.entries()) {
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namedArgs.push({ name, value });
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}
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}
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else if (Array.isArray(stmt)) {
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inSql = stmt[0];
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if (Array.isArray(stmt[1])) {
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args = stmt[1].map((arg) => valueToProto(arg));
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}
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else {
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namedArgs = Object.entries(stmt[1]).map(([name, value]) => {
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return { name, value: valueToProto(value) };
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});
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}
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}
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else {
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inSql = stmt;
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}
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const { sql, sqlId } = sqlToProto(sqlOwner, inSql);
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return { sql, sqlId, args, namedArgs, wantRows };
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}
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