void begin(SectionType sectionType, Location pos) {
if (sectionType == null) {
throw new NullPointerException();
}
if (pos == null) {
throw new NullPointerException();
}
if (currentType != null) {
throw new IllegalStateException();
}
this.currentType = sectionType;
//
switch (currentType) {
case STRING:
break;
case SCRIPTLET:
writer.startScriptlet(pos);
break;
case EXPR:
writer.startExpression(pos);
break;
}
}
