First commit.

Signed-off-by: Chen Xiao <abigwc@gmail.com>
2026-05-08 14:43:16 +08:00
commit 0b64e2de94
10989 changed files with 2253791 additions and 0 deletions
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+/******************************************************************************
+ * Copyright 2022 TypeFox GmbH
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License, which is available in the project root.
+ ******************************************************************************/
+import map from "lodash-es/map.js";
+export const DFA_ERROR = {};
+export class ATNConfigSet {
+    constructor() {
+        this.map = {};
+        this.configs = [];
+    }
+    get size() {
+        return this.configs.length;
+    }
+    finalize() {
+        // Empties the map to free up memory
+        this.map = {};
+    }
+    add(config) {
+        const key = getATNConfigKey(config);
+        // Only add configs which don't exist in our map already
+        // While this does not influence the actual algorithm, adding them anyway would massively increase memory consumption
+        if (!(key in this.map)) {
+            this.map[key] = this.configs.length;
+            this.configs.push(config);
+        }
+    }
+    get elements() {
+        return this.configs;
+    }
+    get alts() {
+        return map(this.configs, (e) => e.alt);
+    }
+    get key() {
+        let value = "";
+        for (const k in this.map) {
+            value += k + ":";
+        }
+        return value;
+    }
+}
+export function getATNConfigKey(config, alt = true) {
+    return `${alt ? `a${config.alt}` : ""}s${config.state.stateNumber}:${config.stack.map((e) => e.stateNumber.toString()).join("_")}`;
+}
+//# sourceMappingURL=dfa.js.map