//throws RecognitionException, TokenStreamException
public void action(
StringTemplate self
)
{
IToken a = null;
IToken i = null;
IToken rr = null;
IToken rd = null;
try { // for error handling
switch ( LA(1) )
{
case ACTION:
{
a = LT(1);
match(ACTION);
string indent = ((ChunkToken)a).Indentation;
ASTExpr c = self.ParseAction(a.getText());
c.Indentation = indent;
self.AddChunk(c);
break;
}
case IF:
{
i = LT(1);
match(IF);
ConditionalExpr c = (ConditionalExpr)self.ParseAction(i.getText());
// create and precompile the subtemplate
StringTemplate subtemplate =
new StringTemplate(self.Group, null);
subtemplate.EnclosingInstance = self;
subtemplate.Name = i.getText() + "_subtemplate";
self.AddChunk(c);
template(subtemplate);
if ( c!=null ) c.Subtemplate = subtemplate;
{
switch ( LA(1) )
{
case ELSE:
{
match(ELSE);
// create and precompile the subtemplate
StringTemplate elseSubtemplate =
new StringTemplate(self.Group, null);
elseSubtemplate.EnclosingInstance = self;
elseSubtemplate.Name = "else_subtemplate";
template(elseSubtemplate);
if ( c!=null ) c.ElseSubtemplate = elseSubtemplate;
break;
}
case ENDIF:
{
break;
}
default:
{
throw new NoViableAltException(LT(1), getFilename());
}
}
}
match(ENDIF);
break;
}
case REGION_REF:
{
rr = LT(1);
match(REGION_REF);
// define implicit template and
// convert <@r()> to <region__enclosingTemplate__r()>
string regionName = rr.getText();
string mangledRef = null;
bool err = false;
// watch out for <@super.r()>; that does NOT def implicit region
// convert to <super.region__enclosingTemplate__r()>
if ( regionName.StartsWith("super.") ) {
//Console.Out.Writeline("super region ref "+regionName);
string regionRef =
regionName.Substring("super.".Length,regionName.Length-"super.".Length);
string templateScope =
self.Group.GetUnMangledTemplateName(self.Name);
StringTemplate scopeST = self.Group.LookupTemplate(templateScope);
if ( scopeST==null ) {
self.Group.Error("reference to region within undefined template: "+
templateScope);
err=true;
}
if ( !scopeST.ContainsRegionName(regionRef) ) {
self.Group.Error("template "+templateScope+" has no region called "+
regionRef);
err=true;
}
else {
mangledRef =
self.Group.GetMangledRegionName(templateScope,regionRef);
mangledRef = "super."+mangledRef;
}
}
else {
//Console.Out.WriteLine("region ref "+regionName);
StringTemplate regionST =
self.Group.DefineImplicitRegionTemplate(self,regionName);
mangledRef = regionST.Name;
}
if ( !err ) {
// treat as regular action: mangled template include
string indent = ((ChunkToken)rr).Indentation;
ASTExpr c = self.ParseAction(mangledRef+"()");
c.Indentation = indent;
self.AddChunk(c);
}
break;
}
case REGION_DEF:
{
rd = LT(1);
match(REGION_DEF);
string combinedNameTemplateStr = rd.getText();
int indexOfDefSymbol = combinedNameTemplateStr.IndexOf("::=");
if ( indexOfDefSymbol>=1 ) {
string regionName = combinedNameTemplateStr.Substring(0,indexOfDefSymbol);
string template =
combinedNameTemplateStr.Substring(indexOfDefSymbol+3,
combinedNameTemplateStr.Length - (indexOfDefSymbol+3));
StringTemplate regionST =
self.Group.DefineRegionTemplate(self,
regionName,
template,
StringTemplate.REGION_EMBEDDED);
// treat as regular action: mangled template include
string indent = ((ChunkToken)rd).Indentation;
ASTExpr c = self.ParseAction(regionST.Name+"()");
c.Indentation = indent;
self.AddChunk(c);
}
else {
self.Error("embedded region definition screwed up");
}
break;
}
default:
{
throw new NoViableAltException(LT(1), getFilename());
}
}
}
catch (RecognitionException ex)
{
reportError(ex);
recover(ex,tokenSet_1_);
}
}
