/* 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 . */
// @flow
import { findClosestFunction } from "./ast";
import { correctIndentation } from "./indentation";
import type { Source } from "../types";
import type { Symbols } from "../reducers/ast";
export function findFunctionText(
line: number,
source: Source,
symbols: ?Symbols
): ?string {
const func = findClosestFunction(symbols, {
sourceId: source.id,
line,
column: Infinity
});
if (source.isWasm || !func || !source.text) {
return null;
}
const {
location: { start, end }
} = func;
const lines = source.text.split("\n");
const firstLine = lines[start.line - 1].slice(start.column);
const lastLine = lines[end.line - 1].slice(0, end.column);
const middle = lines.slice(start.line, end.line - 1);
const functionText = [firstLine, ...middle, lastLine].join("\n");
const indentedFunctionText = correctIndentation(functionText);
return indentedFunctionText;
}