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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 { createSelector } from "devtools/client/shared/vendor/reselect";
import {
getViewport,
getSelectedSource,
getSelectedSourceTextContent,
getBreakpointPositionsForSource,
} from "./index";
import { getVisibleBreakpoints } from "./visibleBreakpoints";
import { getSelectedLocation } from "../utils/selected-location";
import { sortSelectedLocations } from "../utils/location";
import { getLineText } from "../utils/source";
function contains(location, range) {
return (
location.line >= range.start.line &&
location.line <= range.end.line &&
(!location.column ||
(location.column >= range.start.column &&
location.column <= range.end.column))
);
}
function convertToList(breakpointPositions) {
return [].concat(...Object.values(breakpointPositions));
}
/**
* Retrieve the list of column breakpoints to be displayed.
* This ignores lines without any breakpoint, but also lines with a single possible breakpoint.
* So that we only return breakpoints where there is at least two possible breakpoint on a given line.
* Also, this only consider lines currently visible in CodeMirror editor.
*
* This method returns an array whose elements are objects having two attributes:
* - breakpoint: A breakpoint object refering to a precise column location
* - location: The location object in an active source where the breakpoint location matched.
* This location may be the generated or original source based on the currently selected source type.
*
* See `visibleColumnBreakpoints()` for the definition of arguments.
*/
export function getColumnBreakpoints(
positions,
breakpoints,
viewport,
selectedSource,
selectedSourceTextContent
) {
if (!positions || !selectedSource || !breakpoints.length || !viewport) {
return [];
}
const breakpointsPerLine = new Map();
for (const breakpoint of breakpoints) {
if (breakpoint.options.hidden) {
continue;
}
const location = getSelectedLocation(breakpoint, selectedSource);
const { line } = location;
let breakpointsPerColumn = breakpointsPerLine.get(line);
if (!breakpointsPerColumn) {
breakpointsPerColumn = new Map();
breakpointsPerLine.set(line, breakpointsPerColumn);
}
breakpointsPerColumn.set(location.column, breakpoint);
}
const columnBreakpoints = [];
for (const keyLine in positions) {
const positionsPerLine = positions[keyLine];
// Only consider positions where there is more than one breakable position per line.
// When there is only one breakpoint, this isn't a column breakpoint.
if (positionsPerLine.length <= 1) {
continue;
}
for (const breakpointPosition of positionsPerLine) {
const location = getSelectedLocation(breakpointPosition, selectedSource);
const { line } = location;
// Ignore any further computation if there is no breakpoint on that line.
const breakpointsPerColumn = breakpointsPerLine.get(line);
if (!breakpointsPerColumn) {
continue;
}
// Only consider positions visible in the current CodeMirror viewport
if (!contains(location, viewport)) {
continue;
}
// Filters out breakpoints to the right of the line. (bug 1552039)
// XXX Not really clear why we get such positions??
const { column } = location;
if (column) {
const lineText = getLineText(
selectedSource.id,
selectedSourceTextContent,
line
);
if (column > lineText.length) {
continue;
}
}
// Finally, return the expected format output for this selector.
// Location of each column breakpoint + a reference to the breakpoint object (if one is set on that column, it can be null).
const breakpoint = breakpointsPerColumn.get(column);
columnBreakpoints.push({
location,
breakpoint,
});
}
}
return columnBreakpoints;
}
function getVisibleBreakpointPositions(state) {
const source = getSelectedSource(state);
if (!source) {
return null;
}
return getBreakpointPositionsForSource(state, source.id);
}
export const visibleColumnBreakpoints = createSelector(
getVisibleBreakpointPositions,
getVisibleBreakpoints,
getViewport,
getSelectedSource,
getSelectedSourceTextContent,
getColumnBreakpoints
);
export function getFirstBreakpointPosition(state, location) {
const positions = getBreakpointPositionsForSource(state, location.source.id);
if (!positions) {
return null;
}
return sortSelectedLocations(convertToList(positions), location.source).find(
position =>
getSelectedLocation(position, location.source).line == location.line
);
}
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