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Merge pull request #227 from roblabla/feature-addOption

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Add option type
This commit is contained in:
Robin Lambertz 2015-09-02 19:37:04 +02:00
commit 388879bd4b
2 changed files with 31 additions and 0 deletions
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28
src/datatypes/conditional.js
View file

@ -2,6 +2,7 @@ var { getField, getFieldInfo } = require('../utils');
module.exports = {
'switch': [readSwitch, writeSwitch, sizeOfSwitch],
'option': [readOption, writeOption, sizeOfOption],
};
function readSwitch(buffer, offset, typeArgs, rootNode) {
@ -39,3 +40,30 @@ function sizeOfSwitch(value, typeArgs, rootNode) {
fieldInfo = getFieldInfo(typeArgs.fields[compareTo]);
return this.sizeOf(value, fieldInfo, rootNode);
}
function readOption(buffer, offset, typeArgs, context) {
var val = buffer.readUInt8(offset++);
if (val !== 0) {
var retVal = this.read(buffer, offset, typeArgs, context);
retval.size++;
return retval;
} else {
return {
size: 1
};
}
}
function writeOption(value, buffer, offset, typeArgs, context) {
if (value != null) {
buffer.writeUInt8(1, offset++);
this.write(value, buffer, offset, typeArgs, context);
} else {
buffer.writeUInt8(0, offset++);
}
return offset;
}
function sizeOfOption(value, typeArgs, context) {
return value == null ? 1 : this.sizeOf(value, typeArgs, context) + 1;
}

3
test/test.js
View file

@ -138,6 +138,9 @@ var values = {
else
return getValue(i, packet);
},
'option': function(typeArgs, packet) {
return getValue(typeArgs, packet);
}
};
function getValue(_type, packet) {