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compiler.js
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compiler.js
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(function(){
async function loadFileSystem() {
const metadata = (await fetch('fs2600basic.js.metadata')).json();
const content = (await fetch('fs2600basic.data')).blob();
const files = metadata.files.map(({filename, start, end}) => ({
filename, start, end,
content: null
}));
return files;
}
function prepareException(mainMessage, errors) {
var err = new Error(main);
err.errors = errors;
return err;
}
function preprocessBatariBasic(code) {
var bbout = "";
function addbbout_fn(s) {
bbout += s;
bbout += "\n";
}
var errors = [];
function adderror_fn(s) {
errors.push(s);
}
var BBPRE = preprocess({
noInitialRun: true,
print: addbbout_fn,
printErr: adderror_fn,
noFSInit: true,
});
var FS = BBPRE['FS'];
setupStdin(FS, code);
BBPRE.callMain([]);
if (errors.length) {
throw prepareException("Errors while preprocessing.", errors);
}
console.log("preprocess " + code.length + " -> " + bbout.length + " bytes");
return bbout;
}
function execMain(mod, args) {
var run = mod.callMain || mod.run; // TODO: run?
run(args);
}
// To obtain the JSON: JSON.stringify(Object.fromEntries(Object.keys(FS.lookupPath('/share/includes', {}).node.contents).map(name => ([name, FS.readFile('/share/includes/' + name, {encoding: 'utf8'})]))))
function compileBatariBasic(code) {
// stdout
var asmout = "";
function addasmout_fn(s) {
asmout += s;
asmout += "\n";
}
// stderr
var re_err1 = /[(](\d+)[)]:?\s*(.+)/;
var errors = [];
var errline = 0;
function match_fn(s) {
console.log(s);
var matches = re_err1.exec(s);
if (matches) {
errline = parseInt(matches[1]);
errors.push({
line: errline,
msg: matches[2]
});
}
}
var destpath = 'main.asm';
{
var BB = bb2600basic({
noInitialRun: true,
//logReadFiles:true,
print: addasmout_fn,
printErr: match_fn,
noFSInit: true,
TOTAL_MEMORY: 64 * 1024 * 1024,
});
var FS = BB['FS'];
FS.mkdir('share');
FS.mkdir('share/includes');
Object.entries(DEFAULT_INCLUDES).forEach(([name, content]) => {
FS.writeFile('share/includes/' + name, content, { encoding: 'utf8' });
});
setupStdin(FS, code);
FS.writeFile('main.bas', code, { encoding: 'utf8' });
execMain(BB, ["-i", "/share", 'main.bas']);
if (errors.length) {
throw prepareException("Errors while compiling.", errors);
}
// build final assembly output from include file list
var includesout = FS.readFile("includes.bB", { encoding: 'utf8' });
var redefsout = FS.readFile("2600basic_variable_redefs.h", { encoding: 'utf8' });
var includes = includesout.trim().split("\n");
var combinedasm = "";
var splitasm = asmout.split("bB.asm file is split here");
for (var _i = 0, includes_1 = includes; _i < includes_1.length; _i++) {
var incfile = includes_1[_i];
var inctext;
if (incfile == "bB.asm")
inctext = splitasm[0];
else if (incfile == "bB2.asm")
inctext = splitasm[1];
else
inctext = FS.readFile("/share/includes/" + incfile, { encoding: 'utf8' });
console.log(incfile, inctext.length);
combinedasm += "\n\n;;;" + incfile + "\n\n";
combinedasm += inctext;
}
/*
// TODO: ; bB.asm file is split here
putWorkFile(destpath, combinedasm);
putWorkFile("2600basic.h", FS.readFile("/share/includes/2600basic.h"));
putWorkFile("2600basic_variable_redefs.h", redefsout);
*/
return {
'main.asm': combinedasm,
'2600basic.h': FS.readFile("/share/includes/2600basic.h", { encoding: 'utf8' }),
'2600basic_variable_redefs.h': redefsout
};
}
}
// test.c(6) : warning 85: in function main unreferenced local variable : 'x'
// main.a (4): error: Unknown Mnemonic 'xxx'.
// at 2: warning 190: ISO C forbids an empty source file
var re_msvc = /[/]*([^( ]+)\s*[(](\d+)[)]\s*:\s*(.+?):\s*(.*)/;
var re_msvc2 = /\s*(at)\s+(\d+)\s*(:)\s*(.*)/;
function msvcErrorMatcher(errors) {
return function (s) {
var matches = re_msvc.exec(s) || re_msvc2.exec(s);
if (matches) {
var errline = parseInt(matches[2]);
errors.push({
line: errline,
path: matches[1],
msg: matches[4]
});
}
else {
console.log(s);
}
};
}
// TODO: "of" doesn't work in MSIE
var re_crlf = /\r?\n/;
// 1 %line 16+1 hello.asm
var re_lineoffset = /\s*(\d+)\s+[%]line\s+(\d+)\+(\d+)\s+(.+)/;
function parseDASMListing(code, listings, errors, unresolved) {
// TODO: this gets very slow
// 4 08ee a9 00 start lda #01workermain.js:23:5
var lineMatch = /\s*(\d+)\s+(\S+)\s+([0-9a-f]+)\s+([?0-9a-f][?0-9a-f ]+)?\s+(.+)?/i;
var equMatch = /\bequ\b/i;
var macroMatch = /\bMAC\s+(.+)?/i;
var macrolines = [];
var lastline = 0;
var macros = {};
for (var _i = 0, _a = code.split(re_crlf); _i < _a.length; _i++) {
var line = _a[_i];
var linem = lineMatch.exec(line);
if (linem && linem[1]) {
var linenum = parseInt(linem[1]);
var filename = linem[2];
var offset = parseInt(linem[3], 16);
var insns = linem[4];
var restline = linem[5];
if (insns && insns.startsWith('?'))
insns = null;
// inside of a file?
var lst = listings[filename];
if (lst) {
var lines = lst.lines;
// look for MAC statement
var macmatch = macroMatch.exec(restline);
if (macmatch) {
macros[macmatch[1]] = { line: parseInt(linem[1]), file: linem[2].toLowerCase() };
}
else if (insns && !restline.match(equMatch)) {
lines.push({
line: linenum,
offset: offset,
insns: insns,
iscode: restline[0] != '.'
});
}
lastline = linenum;
}
else {
// inside of macro or include file
if (insns && linem[3] && lastline > 0) {
lines.push({
line: lastline + 1,
offset: offset,
insns: null
});
}
// inside of macro?
var mac = macros[filename.toLowerCase()];
if (insns && mac) {
macrolines.push({
filename: mac.file,
line: mac.line + linenum,
offset: offset,
insns: insns
});
}
}
// TODO: better symbol test (word boundaries)
// TODO: ignore IFCONST and IFNCONST usage
for (var key in unresolved) {
var l = restline || line;
var pos = l.indexOf(key);
if (pos >= 0) {
var cmt = l.indexOf(';');
if (cmt < 0 || cmt > pos) {
// make sure identifier is flanked by non-word chars
if (/\w+/.test(key) && new RegExp("\\b" + key + "\\b").test(key)) {
errors.push({
path: filename,
line: linenum,
msg: "Unresolved symbol '" + key + "'"
});
}
}
}
}
}
var errm = re_msvc.exec(line);
if (errm) {
errors.push({
path: errm[1],
line: parseInt(errm[2]),
msg: errm[4]
});
}
}
// TODO: use macrolines
}
function assembleDASM(assemblyFiles) {
var re_usl = /(\w+)\s+0000\s+[?][?][?][?]/;
var unresolved = {};
var errors = [];
var errorMatcher = msvcErrorMatcher(errors);
function match_fn(s) {
// TODO: what if s is not string? (startsWith is not a function)
var matches = re_usl.exec(s);
if (matches) {
var key = matches[1];
if (key != 'NO_ILLEGAL_OPCODES') { // TODO
unresolved[matches[1]] = 0;
}
}
else if (s.startsWith("Warning:")) {
errors.push({ line: 0, msg: s.substr(9) });
}
else if (s.startsWith("unable ")) {
errors.push({ line: 0, msg: s });
}
else {
errorMatcher(s);
}
}
var Module = DASM({
noInitialRun: true,
print: match_fn
});
var FS = Module['FS'];
Object.entries(assemblyFiles).forEach(([name, content]) => FS.writeFile(name, content, { 'encoding': 'utf8' }));
/*
populateFiles(step, FS, {
mainFilePath: 'main.a'
});
*/
var binpath = 'main.bin';
var lstpath = 'main.lst';
var sympath = 'main.sym';
execMain(Module, ['main.asm', '-f3',
"-l" + lstpath,
"-o" + binpath,
"-s" + sympath]);
var alst = FS.readFile(lstpath, { 'encoding': 'utf8' });
// parse main listing, get errors and listings for each file
var listings = {};
for (var _i = 0, _a = Object.keys(assemblyFiles); _i < _a.length; _i++) {
var path = _a[_i];
listings[path] = { lines: [] };
}
parseDASMListing(alst, listings, errors, unresolved);
if (errors.length) {
return { errors: errors };
}
// read binary rom output and symbols
var aout, asym;
aout = FS.readFile(binpath);
try {
asym = FS.readFile(sympath, { 'encoding': 'utf8' });
}
catch (e) {
console.log(e);
errors.push({ line: 0, msg: "No symbol table generated, maybe segment overflow?" });
return { errors: errors };
}
var symbolmap = {};
for (var _b = 0, _c = asym.split("\n"); _b < _c.length; _b++) {
var s = _c[_b];
var toks = s.split(/\s+/);
if (toks && toks.length >= 2 && !toks[0].startsWith('-')) {
symbolmap[toks[0]] = parseInt(toks[1], 16);
}
}
if (errors.length) {
throw prepareException("Errors while assembling.", errors);
}
return {
output: aout,
listings: listings,
symbolmap: symbolmap,
};
}
window.preprocessBatariBasic = preprocessBatariBasic;
window.compileBatariBasic = compileBatariBasic;
window.assembleDASM = assembleDASM;
})();