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Edit File: proto.js

"use strict";
module.exports = proto_target;

proto_target.private = true;

var protobuf = require("../..");

var Namespace  = protobuf.Namespace,
    Enum       = protobuf.Enum,
    Type       = protobuf.Type,
    Field      = protobuf.Field,
    OneOf      = protobuf.OneOf,
    Service    = protobuf.Service,
    Method     = protobuf.Method,
    types      = protobuf.types,
    util       = protobuf.util;

function underScore(str) {
    return str.substring(0,1)
         + str.substring(1)
               .replace(/([A-Z])(?=[a-z]|$)/g, function($0, $1) { return "_" + $1.toLowerCase(); });
}

var out = [];
var indent = 0;
var first = false;
var syntax = 3;

function push(line) {
    if (line === "")
        out.push("");
    else {
        var ind = "";
        for (var i = 0; i < indent; ++i)
            ind += "    ";
        out.push(ind + line);
    }
}

function escape(str) {
    return str.replace(/[\\"']/g, "\\$&")
              .replace(/\r/g, "\\r")
              .replace(/\n/g, "\\n")
              .replace(/\u0000/g, "\\0"); // eslint-disable-line no-control-regex
}

function value(v) {
    switch (typeof v) {
        case "boolean":
            return v ? "true" : "false";
        case "number":
            return v.toString();
        default:
            return "\"" + escape(String(v)) + "\"";
    }
}

function buildRoot(root) {
    root.resolveAll();
    var pkg = [];
    var ptr = root;
    var repeat = true;
    do {
        var nested = ptr.nestedArray;
        if (nested.length === 1 && nested[0] instanceof Namespace && !(nested[0] instanceof Type || nested[0] instanceof Service)) {
            ptr = nested[0];
            if (ptr !== root)
                pkg.push(ptr.name);
        } else
            repeat = false;
    } while (repeat);
    out.push("syntax = \"proto" + syntax + "\";");
    if (pkg.length)
        out.push("", "package " + pkg.join(".") + ";");

buildOptions(ptr);
    ptr.nestedArray.forEach(build);
}

function build(object) {
    if (object instanceof Enum)
        buildEnum(object);
    else if (object instanceof Type)
        buildType(object);
    else if (object instanceof Field)
        buildField(object);
    else if (object instanceof OneOf)
        buildOneOf(object);
    else if (object instanceof Service)
        buildService(object);
    else if (object instanceof Method)
        buildMethod(object);
    else
        buildNamespace(object);
}

function buildNamespace(namespace) { // just a namespace, not a type etc.
    push("");
    push("message " + namespace.name + " {");
    ++indent;
    buildOptions(namespace);
    consolidateExtends(namespace.nestedArray).remaining.forEach(build);
    --indent;
    push("}");
}

function buildType(type) {
    if (type.group)
        return; // built with the sister-field
    push("");
    push("message " + type.name + " {");
    ++indent;
    buildOptions(type);
    type.oneofsArray.forEach(build);
    first = true;
    type.fieldsArray.forEach(build);
    consolidateExtends(type.nestedArray).remaining.forEach(build);
    buildRanges("extensions", type.extensions);
    buildRanges("reserved", type.reserved);
    --indent;
    push("}");
}

function buildService(service) {
    push("service " + service.name + " {");
    ++indent;
    service.methodsArray.forEach(build);
    consolidateExtends(service.nestedArray).remaining.forEach(build);
    --indent;
    push("}");
}

function buildMethod(method) {
    push(method.type + " " + method.name + " (" + (method.requestStream ? "stream " : "") + method.requestType + ") returns (" + (method.responseStream ? "stream " : "") + method.responseType + ");");
}

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