// Just before
public void autoCastArguments()
{
ProseObject[] pattern = AssociatedPattern;
for (int i = 0; i < pattern.Length; i++)
{
PNode componentStart, componentEnd;
componentStart = getArgumentBounds(i, out componentEnd);
// Check for auto-formatting of text expression into string
// Auto-cast a text expression into a string by evaluating it.
if (pattern[i] == runtime.@string &&
Matching[i].value == runtime.Quadquote)
{
PNode textStart = componentStart;
PNode textEnd = componentEnd;
// Create a StringLiteralObject to substitute
string textAsString = runtime.parseTextExpressionIntoString(textStart, textEnd);
PNode literal = new PNode(new StringLiteralObject(textAsString));
// Splice in this literal
literal.prev = textStart.prev;
if (textStart.prev != null)
{
textStart.prev.next = literal;
}
literal.next = textEnd;
if (textEnd != null)
{
textEnd.prev = literal;
}
// Correct the match list.
Matching[i] = literal;
continue;
}
// Auto-cast a prose expression by unwrapping {}
if (pattern[i] == runtime.@prose &&
componentStart.value == runtime.LeftCurlyBracket &&
componentEnd.prev.value == runtime.RightCurlyBracket)
{
PNode leftCurly = componentStart;
PNode rightCurly = componentEnd.prev;
// Correct the match list
Matching[i] = leftCurly.next;
// Eliminate the curly brackets
leftCurly.removeSelf();
rightCurly.removeSelf();
continue;
}
}
}
// Start on the left side of the sentence and perform actions. Eliminate ; along the way if
// it's sandwhiched between actions.
// NOTE: EXPECTS INITIAL PUNCTUATION
private PNode doActionsOnLeftOfSentence(PNode sourcePtr, out bool didSomeActions, out bool sentenceHasBeenExecuted)
{
didSomeActions = false;
sentenceHasBeenExecuted = false;
PNode reduced = sourcePtr.next; // Skip initial punctuation
while (reduced != null)
{
if (reduced.value is ProseAction)
{
// Callback Before
if (BeforePerformingAction != null)
{
BeforePerformingAction(this, reduced);
}
// DO THE ACTION!
// try {
((ProseAction)reduced.value).performAction(this);
// }
// catch (Exception e)
// {
// this.read ("language function exception: \"" + e.Message + "\"", GlobalClient);
// }
// Callback After
if (AfterPerformingAction != null)
{
AfterPerformingAction(this, reduced);
}
didSomeActions = true;
reduced.removeSelf();
reduced = reduced.next;
}
else if (reduced.value == Semicolon || reduced.value == Comma)
{
// Check to see if we should leave this semicolon in (as punctuation for the remaining
// prose to match) or remove it because it's surrounded in actions.
if (reduced.next != null)
{
// Skip over the semicolon and move on to the next action we found
reduced = reduced.next;
}
else
{
// We've run into a the end, so leave the symbol there.
break;
}
}
else if (reduced.value == Period)
{
// We've run into the end of the whole sentence, so skip the period.
sentenceHasBeenExecuted = true;
return(reduced.next);
}
else
{
break;
}
}
if (didSomeActions)
{
return(reduced);
}
else
{
return(sourcePtr);
}
}