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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/>. */
import {
getExpression,
getExpressions,
getSelectedFrame,
getSelectedFrameId,
getSelectedSource,
getSelectedScopeMappings,
getSelectedFrameBindings,
getCurrentThread,
getIsPaused,
isMapScopesEnabled,
} from "../selectors";
import { PROMISE } from "./utils/middleware/promise";
import { wrapExpression } from "../utils/expressions";
import { features } from "../utils/prefs";
/**
* Add expression for debugger to watch
*
* @param {object} expression
* @param {number} expression.id
* @memberof actions/pause
* @static
*/
export function addExpression(cx, input) {
return async ({ dispatch, getState, parserWorker }) => {
if (!input) {
return null;
}
const expressionError = await parserWorker.hasSyntaxError(input);
const expression = getExpression(getState(), input);
if (expression) {
return dispatch(evaluateExpression(cx, expression));
}
dispatch({ type: "ADD_EXPRESSION", cx, input, expressionError });
const newExpression = getExpression(getState(), input);
if (newExpression) {
return dispatch(evaluateExpression(cx, newExpression));
}
return null;
};
}
export function autocomplete(cx, input, cursor) {
return async ({ dispatch, getState, client }) => {
if (!input) {
return;
}
const frameId = getSelectedFrameId(getState(), cx.thread);
const result = await client.autocomplete(input, cursor, frameId);
dispatch({ type: "AUTOCOMPLETE", cx, input, result });
};
}
export function clearAutocomplete() {
return { type: "CLEAR_AUTOCOMPLETE" };
}
export function clearExpressionError() {
return { type: "CLEAR_EXPRESSION_ERROR" };
}
export function updateExpression(cx, input, expression) {
return async ({ dispatch, getState, parserWorker }) => {
if (!input) {
return;
}
const expressionError = await parserWorker.hasSyntaxError(input);
dispatch({
type: "UPDATE_EXPRESSION",
cx,
expression,
input: expressionError ? expression.input : input,
expressionError,
});
dispatch(evaluateExpressions(cx));
};
}
/**
*
* @param {object} expression
* @param {number} expression.id
* @memberof actions/pause
* @static
*/
export function deleteExpression(expression) {
return ({ dispatch }) => {
dispatch({
type: "DELETE_EXPRESSION",
input: expression.input,
});
};
}
/**
*
* @memberof actions/pause
* @param {number} selectedFrameId
* @static
*/
export function evaluateExpressions(cx) {
return async function ({ dispatch, getState, client }) {
const expressions = getExpressions(getState());
const inputs = expressions.map(({ input }) => input);
const frameId = getSelectedFrameId(getState(), cx.thread);
const results = await client.evaluateExpressions(inputs, {
frameId,
threadId: cx.thread,
});
dispatch({ type: "EVALUATE_EXPRESSIONS", cx, inputs, results });
};
}
function evaluateExpression(cx, expression) {
return async function ({ dispatch, getState, client }) {
if (!expression.input) {
console.warn("Expressions should not be empty");
return null;
}
let { input } = expression;
const frame = getSelectedFrame(getState(), cx.thread);
if (frame) {
const selectedSource = getSelectedSource(getState());
if (
selectedSource &&
frame.location.source.isOriginal &&
selectedSource.isOriginal
) {
const mapResult = await dispatch(getMappedExpression(input));
if (mapResult) {
input = mapResult.expression;
}
}
}
const frameId = getSelectedFrameId(getState(), cx.thread);
return dispatch({
type: "EVALUATE_EXPRESSION",
cx,
thread: cx.thread,
input: expression.input,
[PROMISE]: client.evaluate(wrapExpression(input), {
frameId,
}),
});
};
}
/**
* Gets information about original variable names from the source map
* and replaces all posible generated names.
*/
export function getMappedExpression(expression) {
return async function ({ dispatch, getState, parserWorker }) {
const thread = getCurrentThread(getState());
const mappings = getSelectedScopeMappings(getState(), thread);
const bindings = getSelectedFrameBindings(getState(), thread);
// We bail early if we do not need to map the expression. This is important
// because mapping an expression can be slow if the parserWorker
// worker is busy doing other work.
//
// 1. there are no mappings - we do not need to map original expressions
// 2. does not contain `await` - we do not need to map top level awaits
// 3. does not contain `=` - we do not need to map assignments
const shouldMapScopes = isMapScopesEnabled(getState()) && mappings;
if (!shouldMapScopes && !expression.match(/(await|=)/)) {
return null;
}
return parserWorker.mapExpression(
expression,
mappings,
bindings || [],
features.mapExpressionBindings && getIsPaused(getState(), thread),
features.mapAwaitExpression
);
};
}
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