@graphql-tools/graphql/cjs/language/printLocation.js

Fork of GraphQL.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.printSourceLocation = exports.printLocation = void 0;
const location_js_1 = require("./location.js");
/**
 * Render a helpful description of the location in the GraphQL Source document.
 */
function printLocation(location) {
    return printSourceLocation(location.source, (0, location_js_1.getLocation)(location.source, location.start));
}
exports.printLocation = printLocation;
/**
 * Render a helpful description of the location in the GraphQL Source document.
 */
function printSourceLocation(source, sourceLocation) {
    const firstLineColumnOffset = source.locationOffset.column - 1;
    const body = ''.padStart(firstLineColumnOffset) + source.body;
    const lineIndex = sourceLocation.line - 1;
    const lineOffset = source.locationOffset.line - 1;
    const lineNum = sourceLocation.line + lineOffset;
    const columnOffset = sourceLocation.line === 1 ? firstLineColumnOffset : 0;
    const columnNum = sourceLocation.column + columnOffset;
    const locationStr = `${source.name}:${lineNum}:${columnNum}\n`;
    const lines = body.split(/\r\n|[\n\r]/g);
    const locationLine = lines[lineIndex];
    // Special case for minified documents
    if (locationLine.length > 120) {
        const subLineIndex = Math.floor(columnNum / 80);
        const subLineColumnNum = columnNum % 80;
        const subLines = [];
        for (let i = 0; i < locationLine.length; i += 80) {
            subLines.push(locationLine.slice(i, i + 80));
        }
        return (locationStr +
            printPrefixedLines([
                [`${lineNum} |`, subLines[0]],
                ...subLines.slice(1, subLineIndex + 1).map(subLine => ['|', subLine]),
                ['|', '^'.padStart(subLineColumnNum)],
                ['|', subLines[subLineIndex + 1]],
            ]));
    }
    return (locationStr +
        printPrefixedLines([
            // Lines specified like this: ["prefix", "string"],
            [`${lineNum - 1} |`, lines[lineIndex - 1]],
            [`${lineNum} |`, locationLine],
            ['|', '^'.padStart(columnNum)],
            [`${lineNum + 1} |`, lines[lineIndex + 1]],
        ]));
}
exports.printSourceLocation = printSourceLocation;
function printPrefixedLines(lines) {
    const existingLines = lines.filter(([_, line]) => line !== undefined);
    const padLen = Math.max(...existingLines.map(([prefix]) => prefix.length));
    return existingLines.map(([prefix, line]) => prefix.padStart(padLen) + (line ? ' ' + line : '')).join('\n');
}