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Fix ON GOTO and ON GOSUB - Should resolve #11 (#12)

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* Fix ON GOTO and ON GOSUB - Should resolve #11

* Fix ON GOTO and ON GOSUB better - Should handle edge cases

* Fix ON GOTO and ON GOSUB - Added unit tests

* Fix ON GOTO and ON GOSUB - Fixed unit tests
This commit is contained in:
Sigurður Sveinn Halldórsson
2016-07-26 04:14:33 +02:00
committed by Joshua Bell
parent 26bb151874
commit d53e58db23
2 changed files with 93 additions and 42 deletions
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32
basic.js
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@@ -523,13 +523,16 @@ this.basic = (function() {
},
'on_goto': function ON_GOTO(index /* , ...lines */) {
index = (index - 1) >> 0;
var lines = Array.prototype.slice.call(arguments, 1);
if (index < 0 || index >= lines.length) {
index = Math.floor(index)
if (index < 0 || index > 255) {
runtime_error(ERRORS.ILLEGAL_QUANTITY);
}
throw new GoToLine(lines[index]);
--index;
var lines = Array.prototype.slice.call(arguments, 1);
if (index >= 0 && index < lines.length) {
throw new GoToLine(lines[index]);
}
},
'gosub': function GOSUB(line) {
@@ -541,16 +544,19 @@ this.basic = (function() {
},
'on_gosub': function ON_GOSUB(index /* , ...lines */) {
index = (index - 1) >> 0;
var lines = Array.prototype.slice.call(arguments, 1);
if (index < 0 || index >= lines.length) {
index = Math.floor(index)
if (index < 0 || index > 255) {
runtime_error(ERRORS.ILLEGAL_QUANTITY);
}
state.stack.push({
gosub_return: state.stmt_index,
line_number: state.line_number
});
throw new GoToLine(lines[index]);
--index;
var lines = Array.prototype.slice.call(arguments, 1);
if (index >= 0 && index < lines.length) {
state.stack.push({
gosub_return: state.stmt_index,
line_number: state.line_number
});
throw new GoToLine(lines[index]);
}
},
'return': function RETURN() {