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[VM] Throw error on division by zero.

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This commit is contained in:
jtuu 2019-10-17 21:38:47 +03:00
parent cd52ca4576
commit fc2e7647fe
1 changed files with 4 additions and 0 deletions
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4
src/quest_editor/scripting/vm/index.ts
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@ -101,6 +101,7 @@ const ARG_STACK_SLOT_SIZE = 4;
const ARG_STACK_LENGTH = 8; const ARG_STACK_LENGTH = 8;
const STRING_ARG_STORE_ADDRESS = 0x00a92700; const STRING_ARG_STORE_ADDRESS = 0x00a92700;
const STRING_ARG_STORE_SIZE = 1024; // TODO: verify this value const STRING_ARG_STORE_SIZE = 1024; // TODO: verify this value
const FLOAT_EPSILON = 1.19e-07;
export enum ExecutionResult { export enum ExecutionResult {
Ok, Ok,
@ -635,6 +636,9 @@ export class VirtualMachine {
literal: number, literal: number,
op: BinaryNumericOperation, op: BinaryNumericOperation,
): void { ): void {
if ((op === numeric_ops.div || op === numeric_ops.idiv) && literal === 0) {
throw new Error("Division by zero");
}
this.set_register_signed(reg, op(this.get_register_signed(reg), literal)); this.set_register_signed(reg, op(this.get_register_signed(reg), literal));
} }