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breakpointAtLocation.js
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72 lines (60 loc) · 1.89 KB
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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 { getSelectedSource } from "../reducers/sources";
import { getBreakpoints } from "../reducers/breakpoints";
import { isGeneratedId } from "devtools-source-map";
function isGenerated(selectedSource) {
const sourceId = selectedSource.get("id");
return isGeneratedId(sourceId);
}
function getColumn(column, selectedSource) {
if (column) {
return column;
}
return isGenerated(selectedSource) ? undefined : 0;
}
function getLocation(bp, selectedSource) {
return isGenerated(selectedSource)
? bp.generatedLocation || bp.location
: bp.location;
}
function getBreakpointsForSource(
state: OuterState,
selectedSource: SourceRecord
) {
const breakpoints = getBreakpoints(state);
return breakpoints.filter(bp => {
const location = getLocation(bp, selectedSource);
return location.sourceId === selectedSource.get("id");
});
}
function findBreakpointAtLocation(
breakpoints,
selectedSource,
{ line, column }
) {
return breakpoints.find(breakpoint => {
const location = getLocation(breakpoint, selectedSource);
const sameLine = location.line === line;
if (!sameLine) {
return false;
}
if (column === undefined) {
return true;
}
return location.column === getColumn(column, selectedSource);
});
}
/*
* Finds a breakpoint at a location (line, column) of the
* selected source.
*
* This is useful for finding a breakpoint when the
* user clicks in the gutter or on a token.
*/
export function getBreakpointAtLocation(state, location) {
const selectedSource = getSelectedSource(state);
const breakpoints = getBreakpointsForSource(state, selectedSource);
return findBreakpointAtLocation(breakpoints, selectedSource, location);
}