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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
/**
* Ast reducer
* @module reducers/ast
*/
import { makeBreakpointId } from "../utils/breakpoint/index";
export function initialASTState() {
return {
// We are using mutable objects as we never return the dictionary as-is from the selectors
// but only their values.
// Note that all these dictionaries are storing objects as values
// which all will have:
// * a "source" attribute,
// * a "lines" array.
mutableInScopeLines: new Map(),
};
}
function update(state = initialASTState(), action) {
switch (action.type) {
case "IN_SCOPE_LINES": {
state.mutableInScopeLines.set(makeBreakpointId(action.location), {
lines: action.lines,
source: action.location.source,
});
return {
...state,
};
}
case "RESUME": {
return initialASTState();
}
case "REMOVE_SOURCES": {
const { sources } = action;
if (!sources.length) {
return state;
}
const { mutableInScopeLines } = state;
let changed = false;
for (const [breakpointId, { source }] in mutableInScopeLines.entries()) {
if (sources.includes(source)) {
mutableInScopeLines.delete(breakpointId);
changed = true;
}
}
return changed ? { ...state } : state;
}
default: {
return state;
}
}
}
export default update;