110 lines
3.9 KiB
JavaScript
110 lines
3.9 KiB
JavaScript
/**
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* @fileoverview My homage to MACRO-10: a work-alike assembler for the PDP-10
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* @author <a href="mailto:Jeff@pcjs.org">Jeff Parsons</a>
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* @copyright © Jeff Parsons 2012-2017
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*
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* This file is part of PCjs, a computer emulation software project at <http://pcjs.org/>.
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*
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* PCjs is free software: you can redistribute it and/or modify it under the terms of the
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* GNU General Public License as published by the Free Software Foundation, either version 3
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* of the License, or (at your option) any later version.
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*
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* PCjs is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
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* even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with PCjs. If not,
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* see <http://www.gnu.org/licenses/gpl.html>.
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*
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* You are required to include the above copyright notice in every modified copy of this work
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* and to display that copyright notice when the software starts running; see COPYRIGHT in
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* <http://pcjs.org/modules/shared/lib/defines.js>.
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*
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* Some PCjs files also attempt to load external resource files, such as character-image files,
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* ROM files, and disk image files. Those external resource files are not considered part of PCjs
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* for purposes of the GNU General Public License, and the author does not claim any copyright
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* as to their contents.
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*/
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"use strict";
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if (NODE) {
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var Str = require("../../shared/lib/strlib");
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var Web = require("../../shared/lib/weblib");
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var Debugger = require("../../shared/lib/debugger");
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var PDP10 = require("./defines");
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var DebuggerPDP10 = require("./debugger");
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}
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/**
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* @class Macro10
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*/
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class Macro10 {
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/**
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* Macro10(sURL, nAddr, dbg, done)
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*
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* The done() callback is called after the resource has been loaded and parsed, with an error code
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* indicating overall success or failure. The caller must use other methods to obtain further results.
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*
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* The callback is passed three parameters:
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*
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* done(macro10, sURL, nErrorCode)
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*
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* If nErrorCode is zero, the assembly process completed successfully.
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*
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* For access to basic services (eg, println()), we rely on the caller. This is NOT an extension of
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* Component, so those services are NOT part of this class.
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*
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* @this {Macro10}
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* @param {string} sURL (the URL of the resource to be assembled)
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* @param {number|null} nAddr (the absolute address to assemble the code at, if any)
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* @param {DebuggerPDP10} dbg (used to provide services like println() to the Macro10 class)
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* @param {function(Macro10,string,number)} done
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*/
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constructor(sURL, nAddr, dbg, done)
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{
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this.sURL = sURL;
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this.nAddr = nAddr;
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this.dbg = dbg;
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this.done = done;
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var macro10 = this;
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Web.getResource(sURL, null, true, function(sURL, sResource, nErrorCode) {
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if (!nErrorCode) {
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nErrorCode = macro10.parse(sURL, sResource);
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}
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macro10.done(macro10, sURL, nErrorCode);
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});
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}
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/**
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* parse(sURL, sResource)
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*
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* Begin the assembly process.
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*
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* @this {Macro10}
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* @param {string} sURL
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* @param {string} sResource
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* @return {number}
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*/
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parse(sURL, sResource)
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{
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var match, re;
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var sText = sResource;
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if (Str.endsWith(sURL, ".html")) {
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/*
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* We want to parse ONLY text between <PRE>...</PRE> tags.
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*/
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sText = "";
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re = /<pre>([\s\S]*?)<\/pre>/gi;
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while (match = re.exec(sResource)) {
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sText += match[1];
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}
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}
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var i;
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var asLines = sText.split(/\r?\n/);
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for (i = 0; i < asLines.length; i++) {
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//this.dbg.println(asLines[i]);
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}
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return 0;
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}
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}
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