/* This file contains the definitions and documentation for the
additional tree codes used in the GNU C++ compiler (see tree.def
for the standard codes).
- Copyright (C) 1987, 1988, 1990, 1993 Free Software Foundation, Inc.
+ Copyright (C) 1987, 1988, 1990, 1993, 1997, 1998,
+ 1999, 2000 Free Software Foundation, Inc.
Hacked by Michael Tiemann (tiemann@cygnus.com)
This file is part of GNU CC.
Operand 0 is the object within which the offset is taken.
Operand 1 is the offset. The language independent OFFSET_REF
just won't work for us. */
-DEFTREECODE (CP_OFFSET_REF, "cp_offset_ref", "r", 2)
+DEFTREECODE (OFFSET_REF, "offset_ref", 'r', 2)
+
+/* A pointer-to-member constant. For a pointer-to-member constant
+ `X::Y' The PTRMEM_CST_CLASS is the RECORD_TYPE for `X' and the
+ PTRMEM_CST_MEMBER is the _DECL for `Y'. */
+DEFTREECODE (PTRMEM_CST, "ptrmem_cst", 'c', 2)
+
+/* For NEW_EXPR, operand 0 is the placement list.
+ Operand 1 is the new-declarator.
+ Operand 2 is the initializer. */
+DEFTREECODE (NEW_EXPR, "nw_expr", 'e', 3)
+DEFTREECODE (VEC_NEW_EXPR, "vec_nw_expr", 'e', 3)
/* For DELETE_EXPR, operand 0 is the store to be destroyed.
Operand 1 is the value to pass to the destroying function
saying whether the store should be deallocated as well. */
-DEFTREECODE (DELETE_EXPR, "dl_expr", "e", 2)
-DEFTREECODE (VEC_DELETE_EXPR, "vec_dl_expr", "e", 2)
-
-/* For a UNSAVE_EXPR, operand 0 is the value to unsave. By unsave, we
- mean that all _EXPRs such as TARGET_EXPRs, SAVE_EXPRs,
- CALL_EXPRs and RTL_EXPRs, that are protected
- from being evaluated more than once should be reset so that a new
- expand_expr call of this expr will cause those to be re-evaluated.
- This is useful when we want to reuse a tree in different places,
- but where we must re-expand. */
-DEFTREECODE (UNSAVE_EXPR, "unsave_expr", "e", 1)
+DEFTREECODE (DELETE_EXPR, "dl_expr", 'e', 2)
+DEFTREECODE (VEC_DELETE_EXPR, "vec_dl_expr", 'e', 2)
/* Value is reference to particular overloaded class method.
Operand 0 is the class name (an IDENTIFIER_NODE);
operand 1 is the field (also an IDENTIFIER_NODE).
The COMPLEXITY field holds the class level (usually 0). */
-DEFTREECODE (SCOPE_REF, "scope_ref", "r", 2)
+DEFTREECODE (SCOPE_REF, "scope_ref", 'r', 2)
/* When composing an object with a member, this is the result.
Operand 0 is the object. Operand 1 is the member (usually
a dereferenced pointer to member). */
-DEFTREECODE (MEMBER_REF, "member_ref", "r", 2)
+DEFTREECODE (MEMBER_REF, "member_ref", 'r', 2)
/* Type conversion operator in C++. TREE_TYPE is type that this
operator converts to. Operand is expression to be converted. */
-DEFTREECODE (TYPE_EXPR, "type_expr", "e", 1)
+DEFTREECODE (TYPE_EXPR, "type_expr", 'e', 1)
-/* For CPLUS_NEW_EXPR, operand 0 is function which performs initialization,
+/* For AGGR_INIT_EXPR, operand 0 is function which performs initialization,
operand 1 is argument list to initialization function,
and operand 2 is the slot which was allocated for this expression. */
-DEFTREECODE (NEW_EXPR, "nw_expr", "e", 3)
-DEFTREECODE (VEC_NEW_EXPR, "vec_nw_expr", "e", 3)
+DEFTREECODE (AGGR_INIT_EXPR, "aggr_init_expr", 'e', 3)
/* A throw expression. operand 0 is the expression, if there was one,
else it is NULL_TREE. */
-DEFTREECODE (THROW_EXPR, "throw_expr", "e", 1)
+DEFTREECODE (THROW_EXPR, "throw_expr", 'e', 1)
+
+/* An empty class object. The TREE_TYPE gives the class type. We use
+ these to avoid actually creating instances of the empty classes. */
+DEFTREECODE (EMPTY_CLASS_EXPR, "empty_class_expr", 'e', 0)
/* Template definition. The following fields have the specified uses,
although there are other macros in cp-tree.h that should be used for
DECL_RESULT decl for object to be created
(e.g., FUNCTION_DECL with tmpl parms used)
*/
-DEFTREECODE (TEMPLATE_DECL, "template_decl", "d", 0)
+DEFTREECODE (TEMPLATE_DECL, "template_decl", 'd', 0)
+
+/* Index into a template parameter list. The TEMPLATE_PARM_IDX gives
+ the index (from 0) of the parameter, while the TEMPLATE_PARM_LEVEL
+ gives the level (from 1) of the parameter.
+
+ Here's an example:
+
+ template <class T> // Index 0, Level 1.
+ struct S
+ {
+ template <class U, // Index 0, Level 2.
+ class V> // Index 1, Level 2.
+ void f();
+ };
+
+ The DESCENDANTS will be a chain of TEMPLATE_PARM_INDEXs descended
+ from this one. The first descendant will have the same IDX, but
+ its LEVEL will be one less. The TREE_CHAIN field is used to chain
+ together the descendants. The TEMPLATE_PARM_DECL is the
+ declaration of this parameter, either a TYPE_DECL or CONST_DECL.
+ The TEMPLATE_PARM_ORIG_LEVEL is the LEVEL of the most distant
+ parent, i.e., the LEVEL that the parameter originally had when it
+ was declared. For example, if we instantiate S<int>, we will have:
+
+ struct S<int>
+ {
+ template <class U, // Index 0, Level 1, Orig Level 2
+ class V> // Index 1, Level 1, Orig Level 2
+ void f();
+ };
+
+ The LEVEL is the level of the parameter when we are worrying about
+ the types of things; the ORIG_LEVEL is the level when we are
+ worrying about instantiating things. */
+DEFTREECODE (TEMPLATE_PARM_INDEX, "template_parm_index", 'x',
+ /* The addition of (sizeof(tree) - 1) in the next expression
+ is to handle the case when padding pushes us past an even
+ multiple of sizeof(tree). */
+ /* We used to try to calculate this using
+ 1+3*sizeof(HOST_WIDE_INT), but that fails if alignment
+ makes it bigger. */
+ ((sizeof (template_parm_index) - sizeof (struct tree_common))
+ + sizeof (tree) - 1)
+ / sizeof (tree))
/* Index into a template parameter list. This parameter must be a type.
- Use TYPE_FIELDS to find parmlist and index. */
-DEFTREECODE (TEMPLATE_TYPE_PARM, "template_type_parm", "t", 0)
+ The TYPE_FIELDS value will be a TEMPLATE_PARM_INDEX. */
+DEFTREECODE (TEMPLATE_TYPE_PARM, "template_type_parm", 't', 0)
-/* Index into a template parameter list. This parameter must not be a
- type. */
-DEFTREECODE (TEMPLATE_CONST_PARM, "template_const_parm", "c", 2)
+/* Index into a template parameter list. This parameter must be a type.
+ If it is used in signature of a template, TEMPLATE_INFO is NULL_TREE.
+ Otherwise it is used to declare a type like TT<int>.
+ The TYPE_FIELDS value will be a TEMPLATE_PARM_INDEX. */
+DEFTREECODE (TEMPLATE_TEMPLATE_PARM, "template_template_parm", 't', 0)
+
+/* A type designated by `typename T::t'. TYPE_CONTEXT is `T',
+ TYPE_NAME is an IDENTIFIER_NODE for `t'. If the type was named via
+ template-id, TYPENAME_TYPE_FULLNAME will hold the TEMPLATE_ID_EXPR.
+ If TREE_TYPE is present, this type was generated by the implicit
+ typename extension, and the TREE_TYPE is a _TYPE from a baseclass
+ of `T'. */
+DEFTREECODE (TYPENAME_TYPE, "typename_type", 't', 0)
-/* For uninstantiated parameterized types.
- TYPE_VALUES tree list:
- TREE_PURPOSE template decl
- TREE_VALUE parm vector
- TREE_CHAIN null
- Other useful fields to be defined later. */
-DEFTREECODE (UNINSTANTIATED_P_TYPE, "uninstantiated_p_type", "t", 0)
+/* A type designated by `__typeof (expr)'. TYPE_FIELDS is the
+ expression in question. */
+DEFTREECODE (TYPEOF_TYPE, "typeof_type", 't', 0)
/* A thunk is a stub function.
- Thunks are used to implement multiple inheritance:
- At run-time, such a thunk subtracts THUNK_DELTA (an int, not a tree)
- from the this pointer, and then jumps to DECL_INITIAL
- (which is an ADDR_EXPR whose operand is a FUNCTION_DECL).
+ A THUNK_DECL is an alternate entry point for an ordinary
+ FUNCTION_DECL. It's job is to adjust the `this' poitner before
+ transferring control to the FUNCTION_DECL.
+
+ A thunk may perform either, or both, of the following operations:
- Other kinds of thunks may be defined later. */
-DEFTREECODE (THUNK_DECL, "thunk_decl", "d", 0)
+ o Adjust the `this' pointer by a constant offset.
+ o Adjust the `this' pointer by looking up a vcall-offset
+ in the vtable.
-/* A namespace declaration. */
-DEFTREECODE (NAMESPACE_DECL, "namespace_decl", "d", 0)
+ If both operations are performed, then the constant adjument to
+ `this' is performed first.
+
+ The constant adjustment is given by THUNK_DELTA. If the
+ vcall-offset is required, the index into the vtable is given by
+ THUNK_VCALL_OFFSET. */
+DEFTREECODE (THUNK_DECL, "thunk_decl", 'd', 0)
/* A using declaration. DECL_INITIAL contains the specified scope.
This is not an alias, but is later expanded into multiple aliases. */
-DEFTREECODE (USING_DECL, "using_decl", "d", 0)
+DEFTREECODE (USING_DECL, "using_decl", 'd', 0)
+
+/* An un-parsed default argument. Looks like an IDENTIFIER_NODE. */
+DEFTREECODE (DEFAULT_ARG, "default_arg", 'c', 2)
+
+/* A template-id, like foo<int>. The first operand is the template.
+ The second is the TREE_LIST or TREE_VEC of explicitly specified
+ arguments. The template will be a FUNCTION_DECL, TEMPLATE_DECL, or
+ an OVERLOAD. If the template-id refers to a member template, the
+ template may be an IDENTIFIER_NODE. */
+DEFTREECODE (TEMPLATE_ID_EXPR, "template_id_expr", 'e', 2)
+
+/* An association between name and entity. Parameters are the scope
+ and the (non-type) value. TREE_TYPE indicates the type bound to
+ the name. */
+DEFTREECODE (CPLUS_BINDING, "binding", 'x', 2)
+
+/* A list-like node for chaining overloading candidates. TREE_TYPE is
+ the original name, and the parameter is the FUNCTION_DECL. */
+DEFTREECODE (OVERLOAD, "overload", 'x', 1)
+
+/* A generic wrapper for something not tree that we want to include in
+ tree structure. */
+DEFTREECODE (WRAPPER, "wrapper", 'x', 1)
+
+/* A node to remember a source position. */
+DEFTREECODE (SRCLOC, "srcloc", 'x', 2)
+
+/* Used to represent deferred name lookup for dependent names while
+ parsing a template declaration. The first argument is an
+ IDENTIFIER_NODE for the name in question. The TREE_TYPE is
+ unused. */
+DEFTREECODE (LOOKUP_EXPR, "lookup_expr", 'e', 1)
+
+/* Used to represent __PRETTY_FUNCTION__ in template bodies. */
+DEFTREECODE (FUNCTION_NAME, "function_name", 'e', 0)
+
+/* A whole bunch of tree codes for the initial, superficial parsing of
+ templates. */
+DEFTREECODE (MODOP_EXPR, "modop_expr", 'e', 3)
+DEFTREECODE (CAST_EXPR, "cast_expr", '1', 1)
+DEFTREECODE (REINTERPRET_CAST_EXPR, "reinterpret_cast_expr", '1', 1)
+DEFTREECODE (CONST_CAST_EXPR, "const_cast_expr", '1', 1)
+DEFTREECODE (STATIC_CAST_EXPR, "static_cast_expr", '1', 1)
+DEFTREECODE (DYNAMIC_CAST_EXPR, "dynamic_cast_expr", '1', 1)
+DEFTREECODE (SIZEOF_EXPR, "sizeof_expr", '1', 1)
+DEFTREECODE (ALIGNOF_EXPR, "alignof_expr", '1', 1)
+DEFTREECODE (ARROW_EXPR, "arrow_expr", 'e', 1)
+DEFTREECODE (DOTSTAR_EXPR, "dotstar_expr", 'e', 2)
+DEFTREECODE (TYPEID_EXPR, "typeid_expr", 'e', 1)
+DEFTREECODE (PSEUDO_DTOR_EXPR, "pseudo_dtor_expr", 'e', 3)
+
+DEFTREECODE (EXPR_STMT, "expr_stmt", 'e', 1)
+DEFTREECODE (COMPOUND_STMT, "compound_stmt", 'e', 1)
+DEFTREECODE (DECL_STMT, "decl_stmt", 'e', 1)
+DEFTREECODE (IF_STMT, "if_stmt", 'e', 3)
+DEFTREECODE (FOR_STMT, "for_stmt", 'e', 4)
+DEFTREECODE (WHILE_STMT, "while_stmt", 'e', 2)
+DEFTREECODE (DO_STMT, "do_stmt", 'e', 2)
+DEFTREECODE (RETURN_STMT, "return_stmt", 'e', 1)
+DEFTREECODE (BREAK_STMT, "break_stmt", 'e', 0)
+DEFTREECODE (CONTINUE_STMT, "continue_stmt", 'e', 0)
+DEFTREECODE (SWITCH_STMT, "switch_stmt", 'e', 2)
+DEFTREECODE (GOTO_STMT, "goto_stmt", 'e', 1)
+DEFTREECODE (LABEL_STMT, "label_stmt", 'e', 1)
+DEFTREECODE (ASM_STMT, "asm_stmt", 'e', 5)
+/* A SUBOBJECT statement marks the point at which a sub-object is
+ fully constructed. After this point, the SUBOBJECT_CLEANUP must be
+ run if an exception is thrown before the end of the enclosing
+ function. */
+DEFTREECODE (SUBOBJECT, "subobject", 'e', 1)
+/* An CTOR_STMT marks the beginning (if CTOR_BEGIN_P holds) or end of
+ a contstructor (if CTOR_END_P) holds. At the end of a constructor,
+ the cleanups associated with any SUBOBJECT_CLEANUPS need no longer
+ be run. */
+DEFTREECODE (CTOR_STMT, "ctor_stmt", 'e', 0)
+/* A CLEANUP_STMT marks the point at which a declaration is fully
+ constructed. If, after this point, the CLEANUP_DECL goes out of
+ scope, the CLEANUP_EXPR must be run. */
+DEFTREECODE (CLEANUP_STMT, "cleanup_stmt", 'e', 2)
+/* A START_CATCH_STMT marks the beginning of a catch handler for the
+ the START_CATCH_TYPE. If this is CATCH_ALL_TYPE, then the handler
+ catches all types. */
+DEFTREECODE (START_CATCH_STMT, "start_catch_stmt", 'e', 0)
+/* A SCOPE_STMT marks the beginning or end of a scope. If
+ SCOPE_BEGIN_P holds, then this is the start of a scope. If
+ SCOPE_END_P holds, then this is the end of a scope. If
+ SCOPE_NULLIFIED_P holds then there turned out to be no variables in
+ this scope. The SCOPE_STMT_BLOCK is the BLOCK containing the
+ variables declared in this scope. */
+DEFTREECODE (SCOPE_STMT, "scope_stmt", 'e', 1)
+DEFTREECODE (CTOR_INITIALIZER, "ctor_initializer", 'e', 2)
+DEFTREECODE (CASE_LABEL, "case_label", 'e', 2)
+DEFTREECODE (RETURN_INIT, "return_init", 'e', 2)
+DEFTREECODE (TRY_BLOCK, "try_block", 'e', 2)
+DEFTREECODE (HANDLER, "handler", 'e', 2)
+
+/* A STMT_EXPR represents a statement-expression. The
+ STMT_EXPR_STMT is the statement given by the expression. */
+DEFTREECODE (STMT_EXPR, "stmt_expr", 'e', 1)
+
+DEFTREECODE (TAG_DEFN, "tag_defn", 'e', 0)
+
+/* And some codes for expressing conversions for overload resolution. */
+
+DEFTREECODE (IDENTITY_CONV, "identity_conv", 'e', 1)
+DEFTREECODE (LVALUE_CONV, "lvalue_conv", 'e', 1)
+DEFTREECODE (QUAL_CONV, "qual_conv", 'e', 1)
+DEFTREECODE (STD_CONV, "std_conv", 'e', 1)
+DEFTREECODE (PTR_CONV, "ptr_conv", 'e', 1)
+DEFTREECODE (PMEM_CONV, "pmem_conv", 'e', 1)
+DEFTREECODE (BASE_CONV, "base_conv", 'e', 1)
+DEFTREECODE (REF_BIND, "ref_bind", 'e', 1)
+DEFTREECODE (USER_CONV, "user_conv", 'e', 2)
+DEFTREECODE (AMBIG_CONV, "ambig_conv", 'e', 1)
+DEFTREECODE (RVALUE_CONV, "rvalue_conv", 'e', 1)
+
+/*
+Local variables:
+mode:c
+End:
+*/
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