By default, the semantic stack is declared to have @code{Object} members,
which means that the class types you specify can be of any class.
To improve the type safety of the parser, you can declare the common
-superclass of all the semantic values using the @samp{%define stype}
+superclass of all the semantic values using the @samp{%define api.value.type}
directive. For example, after the following declaration:
@example
-%define stype "ASTNode"
+%define api.value.type "ASTNode"
@end example
@noindent
@deftypemethod {Lexer} {Object} getLVal ()
Return the semantic value of the last token that yylex returned.
-The return type can be changed using @samp{%define stype
+The return type can be changed using @samp{%define api.value.type
"@var{class-name}".}
@end deftypemethod
@defvar $$
The semantic value for the grouping made by the current rule. As a
value, this is in the base type (@code{Object} or as specified by
-@samp{%define stype}) as in not cast to the declared subtype because
+@samp{%define api.value.type}) as in not cast to the declared subtype because
casts are not allowed on the left-hand side of Java assignments.
Use an explicit Java cast if the correct subtype is needed.
@xref{Java Semantic Values}.
@item
Java lacks unions, so @code{%union} has no effect. Instead, semantic
values have a common base type: @code{Object} or as specified by
-@samp{%define stype}. Angle brackets on @code{%token}, @code{type},
+@samp{%define api.value.type}. Angle brackets on @code{%token}, @code{type},
@code{$@var{n}} and @code{$$} specify subtypes rather than fields of
an union. The type of @code{$$}, even with angle brackets, is the base
type since Java casts are not allow on the left-hand side of assignments.
@xref{Java Bison Interface}.
@end deffn
-@deffn {Directive} {%define stype} "@var{class}"
+@deffn {Directive} {%define api.value.type} "@var{class}"
The base type of semantic values. Default is @code{Object}.
@xref{Java Semantic Values}.
@end deffn