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Adapt bf and chef to error handling

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This commit is contained in:
Nilay Majorwar
2022-01-22 15:44:05 +05:30
parent 0efd4c79ef
commit 22ee70948a
8 changed files with 46 additions and 42 deletions
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8
engines/chef/runtime/index.ts
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@@ -3,7 +3,6 @@ import {
LanguageEngine,
StepExecutionResult,
} from "../../types";
import { UnexpectedError } from "../../errors";
import { parseProgram } from "../parser";
import * as T from "../types";
import InputStream from "./input-stream";
@@ -62,8 +61,7 @@ export default class ChefLanguageEngine implements LanguageEngine<T.ChefRS> {
currFrame.pc += 1;
} else if (currFrame.pc === currFrame.recipe.method.length) {
// Execution of the "Serves" statement
const serves = currFrame.recipe.serves;
if (!serves) throw new UnexpectedError();
const serves = currFrame.recipe.serves!;
output = this.getKitchenOutput(currFrame.kitchen, serves.num);
currFrame.pc += 1;
} else {
@@ -157,7 +155,7 @@ export default class ChefLanguageEngine implements LanguageEngine<T.ChefRS> {
// Check value of loop-opener ingredient
const opener = currRecipe.recipe.method[op.opener].op;
if (opener.code !== "LOOP-OPEN") throw new UnexpectedError();
if (opener.code !== "LOOP-OPEN") throw new Error("Bad jump address");
const ing = currRecipe.kitchen.getIngredient(opener.ing, true);
if (ing.value === 0) currRecipe.pc += 1;
else currRecipe.pc = op.opener;
@@ -261,7 +259,7 @@ export default class ChefLanguageEngine implements LanguageEngine<T.ChefRS> {
/** Get topmost frame in call stack. Throws if stack is empty. */
private getCurrentFrame(): CallStackItem {
if (this._stack.length === 0) throw new UnexpectedError();
if (this._stack.length === 0) throw new Error("Call stack is empty");
return this._stack[this._stack.length - 1];
}