// Copyright Neil Ramsden 2004. All rights reserved.
// Suffix checker flowchart definition
// Neil Ramsden
// suffix.js
// 16 Jul 04 -> 27 Sep 04
//---------------------------------------------------------------------------
/* Global variables
*/
//advice constants
var /*const*/ _changeYToI = new Advice('change the <y>' +
' to <i> before you add the suffix');
var /*const*/ _doubleLastLetter = new Advice('double the last letter before you add the suffix');
var /*const*/ _justAddSuffix = new Advice('just add the suffix');
var /*const*/ _removeE = new Advice('remove the <e>' +
' and replace it with the suffix');
var /*const*/ _removeEchangeYToI = new Advice('remove the <e>' +
' AND change the <i>' +
' to <y> before you add the suffix');
var /*const*/ _holdingAction = new Advice('to be completed!');
//repeated choice constants
var /*const*/ _vowelPlusConsonant =
new Choice(
[
{ text: 'the base or stem is a monosyllable',
action: _doubleLastLetter
},
{ text: 'the last letter of the base or stem is <l>' +
' and you are not writing US English',
action: _doubleLastLetter
},
{ text: 'the stress is on the syllable just before the suffix in the finished word',
action: _doubleLastLetter
},
{ text: 'the syllable just before the suffix in the finished word isn\'t stressed',
action: _justAddSuffix
}
]);
//flow chart
var /*const*/ flowChart = new Choice(
[
{ text: 'the suffix begins with a consonant letter',
action: new Choice(
[
/*consonant suffices
*/
{ text: 'the base or stem ends with <y>',
action: new Choice(
[
{ text: 'the letter before that <y> is a vowel',
action: _justAddSuffix
},
{ text: 'the letter before that <y> is a consonant',
action: _changeYToI
}
])
},
{ text: 'the base or stem doesn\'t end with <y>',
action: _justAddSuffix
}
])
},
{ text: 'the suffix begins with a vowel letter (including <y>)',
action: new Choice(
[
/*vowel suffices
*/
{ text: 'the base or stem ends with <w>' +
' or <x>',
action: _justAddSuffix
},
{ text: 'the base or stem ends with more than one consonant letter',
action: _justAddSuffix
},
{ text: 'the base or stem ends with just one consonant letter',
action: new Choice(
[
{ text: 'the base or stem ends with a single consonant letter AND there is only one vowel letter immediately before it',
action: _vowelPlusConsonant
},
{ text: 'the last four letters of the base or stem consist of the digraph' +
' <qu> followed by a single vowel letter then' +
' a single consonant letter, eg. <equal>' +
' or <quit>',
action: _vowelPlusConsonant
},
{ text: 'the base or stem ends with a single consonant letter AND there is more than one vowel letter immediately before it',
action: _justAddSuffix
}
])
},
{ text: 'the base or stem ends with a single silent <e>',
action: new Choice(
[
{ text: 'the suffix is <−ing>',
action: new Choice(
[
{ text: 'the base or stem ends with <ie>',
action: _removeEchangeYToI
},
{ text: 'the base or stem ends with <ye>' +
' or <oe>',
action: _justAddSuffix
},
{ text: 'the base or stem doesn\'t end with <ie>,' +
' <ye> or <oe>',
action: _removeE
}
])
},
{ text: 'the suffix isn\'t <−ing>',
action: _removeE
}
])
},
{ text: 'the base or stem ends with a vowel letter (including <y>)',
action: new Choice(
[
{ text: 'the base or stem ends with <y>',
action: new Choice(
[
{ text: 'there is a vowel letter before the final <y>' +
' in the base or stem',
action: _justAddSuffix
},
{ text: 'the suffix begins with <i>',
action: _justAddSuffix
},
{ text: 'the suffix doesn\'t begin with <i>',
action: _changeYToI
}
])
},
{ text: 'the base or stem doesn\'t end with <y>',
action: _justAddSuffix
}
])
}
])
}
]);