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error recovery!

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This commit is contained in:
nora 2023-08-06 00:07:10 +02:00
parent c0c08488ba
commit ef04f21100
18 changed files with 799 additions and 366 deletions
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176
src/index.ts
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@ -1,4 +1,4 @@
import { LoadedFile, Span, withErrorPrinter } from "./error";
import { LoadedFile, Span } from "./error";
import { isValidIdent, tokenize } from "./lexer";
import { lower as lowerToWasm } from "./codegen";
import { ParseState, parse } from "./parser";
@ -16,9 +16,9 @@ const INPUT = `
type A = struct { a: Int };
function main() = (
let a = A { a: 0 };
rawr(___transmute(a));
std.printInt(a.a);
let a: Int = "";
let b: Int = "";
c;
);
function rawr(a: *A) = (
@ -42,91 +42,95 @@ function main() {
const gcx = new GlobalContext(opts, loadCrate);
const mainCrate = gcx.crateId.next();
withErrorPrinter(
() => {
const start = Date.now();
const start = Date.now();
if (packageName !== "std") {
gcx.crateLoader(gcx, "std", Span.startOfFile(file));
if (packageName !== "std") {
gcx.crateLoader(gcx, "std", Span.startOfFile(file));
}
const tokens = tokenize(gcx.error, file);
// We treat lexer errors as fatal.
if (!tokens.ok) {
process.exit(1);
}
if (debug.has("tokens")) {
console.log("-----TOKENS------------");
console.log(tokens);
}
const parseState: ParseState = { tokens: tokens.tokens, gcx, file };
const ast: Crate<Built> = parse(packageName, parseState, mainCrate);
if (debug.has("ast")) {
console.log("-----AST---------------");
console.dir(ast.rootItems, { depth: 50 });
console.log("-----AST pretty--------");
const printed = printAst(ast);
console.log(printed);
}
if (debug.has("resolved")) {
console.log("-----AST resolved------");
}
const resolved = resolve(gcx, ast);
if (debug.has("resolved")) {
const resolvedPrinted = printAst(resolved);
console.log(resolvedPrinted);
}
if (debug.has("typecked")) {
console.log("-----AST typecked------");
}
const typecked: Crate<Typecked> = typeck(gcx, resolved);
if (debug.has("typecked")) {
const typeckPrinted = printAst(typecked);
console.log(typeckPrinted);
}
if (debug.has("wat")) {
console.log("-----wasm--------------");
}
// Codegen should never handle errornous code.
if (gcx.error.hasErrors()) {
process.exit(1);
}
gcx.finalizedCrates.push(typecked);
const wasmModule = lowerToWasm(gcx);
const moduleStringColor = writeModuleWatToString(wasmModule, true);
const moduleString = writeModuleWatToString(wasmModule);
if (debug.has("wat")) {
console.log(moduleStringColor);
}
if (!opts.noOutput) {
fs.writeFileSync("out.wat", moduleString);
}
if (debug.has("wasm-validate")) {
console.log("--validate wasm-tools--");
exec("wasm-tools validate out.wat", (error, stdout, stderr) => {
if (error && error.code === 1) {
console.log(stderr);
} else if (error) {
console.error(`failed to spawn wasm-tools: ${error.message}`);
} else {
if (stderr) {
console.log(stderr);
}
if (stdout) {
console.log(stdout);
}
}
const tokens = tokenize(file);
if (debug.has("tokens")) {
console.log("-----TOKENS------------");
console.log(tokens);
}
const parseState: ParseState = { tokens, file };
const ast: Crate<Built> = parse(packageName, parseState, mainCrate);
if (debug.has("ast")) {
console.log("-----AST---------------");
console.dir(ast.rootItems, { depth: 50 });
console.log("-----AST pretty--------");
const printed = printAst(ast);
console.log(printed);
}
if (debug.has("resolved")) {
console.log("-----AST resolved------");
}
const resolved = resolve(gcx, ast);
if (debug.has("resolved")) {
const resolvedPrinted = printAst(resolved);
console.log(resolvedPrinted);
}
if (debug.has("typecked")) {
console.log("-----AST typecked------");
}
const typecked: Crate<Typecked> = typeck(gcx, resolved);
if (debug.has("typecked")) {
const typeckPrinted = printAst(typecked);
console.log(typeckPrinted);
}
if (debug.has("wat")) {
console.log("-----wasm--------------");
}
gcx.finalizedCrates.push(typecked);
const wasmModule = lowerToWasm(gcx);
const moduleStringColor = writeModuleWatToString(wasmModule, true);
const moduleString = writeModuleWatToString(wasmModule);
if (debug.has("wat")) {
console.log(moduleStringColor);
}
if (!opts.noOutput) {
fs.writeFileSync("out.wat", moduleString);
}
if (debug.has("wasm-validate")) {
console.log("--validate wasm-tools--");
exec("wasm-tools validate out.wat", (error, stdout, stderr) => {
if (error && error.code === 1) {
console.log(stderr);
} else if (error) {
console.error(`failed to spawn wasm-tools: ${error.message}`);
} else {
if (stderr) {
console.log(stderr);
}
if (stdout) {
console.log(stdout);
}
}
console.log(`finished in ${Date.now() - start}ms`);
});
}
},
() => process.exit(1),
);
console.log(`finished in ${Date.now() - start}ms`);
});
}
}
main();