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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
* file, You can obtain one at <http://mozilla.org/MPL/2.0/>. */
// @flow
/**
* Ast reducer
* @module reducers/ast
*/
import { makeBreakpointId } from "../utils/breakpoint";
import type { SymbolDeclarations } from "../workers/parser";
import type { Source, SourceLocation } from "../types";
import type { Action, DonePromiseAction } from "../actions/types";
type EmptyLinesType = number[];
export type LoadedSymbols = SymbolDeclarations;
export type Symbols = LoadedSymbols | {| loading: true |};
export type EmptyLinesMap = { [k: string]: EmptyLinesType };
export type SymbolsMap = { [k: string]: Symbols };
export type SourceMetaDataType = {
framework: ?string,
};
export type SourceMetaDataMap = { [k: string]: SourceMetaDataType };
export type ASTState = {
+symbols: SymbolsMap,
+inScopeLines: { [string]: Array<number> },
};
export function initialASTState(): ASTState {
return {
symbols: {},
inScopeLines: {},
};
}
function update(state: ASTState = initialASTState(), action: Action): ASTState {
switch (action.type) {
case "SET_SYMBOLS": {
const { sourceId } = action;
if (action.status === "start") {
return {
...state,
symbols: { ...state.symbols, [sourceId]: { loading: true } },
};
}
const value = ((action: any): DonePromiseAction).value;
return {
...state,
symbols: { ...state.symbols, [sourceId]: value },
};
}
case "IN_SCOPE_LINES": {
return {
...state,
inScopeLines: {
...state.inScopeLines,
[makeBreakpointId(action.location)]: action.lines,
},
};
}
case "RESUME": {
return { ...state, inScopeLines: {} };
}
case "NAVIGATE": {
return initialASTState();
}
default: {
return state;
}
}
}
// NOTE: we'd like to have the app state fully typed
// https://github.com/firefox-devtools/debugger/blob/master/src/reducers/sources.js#L179-L185
type OuterState = { ast: ASTState };
export function getSymbols(state: OuterState, source: ?Source): ?Symbols {
if (!source) {
return null;
}
return state.ast.symbols[source.id] || null;
}
export function hasSymbols(state: OuterState, source: Source): boolean {
const symbols = getSymbols(state, source);
if (!symbols) {
return false;
}
return !symbols.loading;
}
export function getFramework(state: OuterState, source: Source): ?string {
const symbols = getSymbols(state, source);
if (symbols && !symbols.loading) {
return symbols.framework;
}
}
export function isSymbolsLoading(state: OuterState, source: ?Source): boolean {
const symbols = getSymbols(state, source);
if (!symbols) {
return false;
}
return symbols.loading;
}
export function getInScopeLines(state: OuterState, location: SourceLocation) {
return state.ast.inScopeLines[makeBreakpointId(location)];
}
export function hasInScopeLines(
state: OuterState,
location: SourceLocation
): boolean {
return !!getInScopeLines(state, location);
}
export default update;
|
