@eagleoutice/flowr/dataflow/environments/remove.js

Static Dataflow Analyzer and Program Slicer for the R Programming Language

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.remove = remove;
const environment_1 = require("./environment");
const info_1 = require("../info");
/**
 * Removes all definitions of a given name from the environment.
 */
function remove(name, environment) {
    let current = environment.current;
    do {
        const definition = current.memory.get(name);
        if (definition !== undefined) {
            current.memory.delete(name);
            if (definition.every(d => (0, info_1.happensInEveryBranch)(d.controlDependencies))) {
                break;
            }
        }
        current = current.parent;
    } while (current.id !== environment_1.BuiltInEnvironment.id);
    // we never remove built ins
    return environment;
}
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