cpp-merge/lib/parse/CppFileParser.js

Command line tool to produce single source file from multiple C/C++ files

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const os_1 = require("os");
class CppFileParser {
    parse(fileContent) {
        var _a, _b;
        const fileLines = fileContent.split(os_1.EOL);
        const content = [];
        const systemIncludes = new Set();
        const localIncludes = new Set();
        let pragmaOnceFound = false;
        let emptyCount = 0;
        for (const line of fileLines) {
            if (CppFileParser.pragmaOnceRegExp.test(line)) {
                pragmaOnceFound = true;
                continue;
            }
            const systemInclude = (_a = CppFileParser.systemIncludeRegExp.exec(line)) === null || _a === void 0 ? void 0 : _a[1];
            if (systemInclude) {
                systemIncludes.add(systemInclude);
                continue;
            }
            const localInclude = (_b = CppFileParser.localIncludeRegExp.exec(line)) === null || _b === void 0 ? void 0 : _b[1];
            if (localInclude) {
                localIncludes.add(localInclude);
                continue;
            }
            if (line) {
                emptyCount = 0;
            }
            else if (++emptyCount > 1) {
                continue;
            }
            content.push(line);
        }
        return {
            processOnce: pragmaOnceFound,
            localIncludes: Array.from(localIncludes.values()),
            systemIncludes: Array.from(systemIncludes.values()),
            content: content.join(os_1.EOL)
        };
    }
}
exports.default = CppFileParser;
CppFileParser.localIncludeRegExp = /^#include "([^"]+)"/;
CppFileParser.systemIncludeRegExp = /^#include <([^>]+)>/;
CppFileParser.pragmaOnceRegExp = /^#pragma once/;
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