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- /* Header file for GDB compile C++ language support.
- Copyright (C) 2016-2022 Free Software Foundation, Inc.
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>. */
- #ifndef COMPILE_COMPILE_CPLUS_H
- #define COMPILE_COMPILE_CPLUS_H
- #include "gdbsupport/enum-flags.h"
- #include "gcc-cp-plugin.h"
- #include "symtab.h"
- struct type;
- struct block;
- /* enum-flags wrapper */
- DEF_ENUM_FLAGS_TYPE (enum gcc_cp_qualifiers, gcc_cp_qualifiers_flags);
- DEF_ENUM_FLAGS_TYPE (enum gcc_cp_ref_qualifiers, gcc_cp_ref_qualifiers_flags);
- DEF_ENUM_FLAGS_TYPE (enum gcc_cp_symbol_kind, gcc_cp_symbol_kind_flags);
- class compile_cplus_instance;
- /* A single component of a type's scope. Type names are broken into
- "components," a series of unqualified names comprising the type name,
- e.g., "namespace1", "namespace2", "myclass". */
- struct scope_component
- {
- /* The unqualified name of this scope. */
- std::string name;
- /* The block symbol for this type/scope. */
- struct block_symbol bsymbol;
- };
- /* Comparison operators for scope_components. */
- bool operator== (const scope_component &lhs, const scope_component &rhs);
- bool operator!= (const scope_component &lhs, const scope_component &rhs);
- /* A single compiler scope used to define a type.
- A compile_scope is a list of scope_components, where all leading
- scope_components are namespaces, followed by a single non-namespace
- type component (the actual type we are converting). */
- class compile_scope : private std::vector<scope_component>
- {
- public:
- using std::vector<scope_component>::push_back;
- using std::vector<scope_component>::pop_back;
- using std::vector<scope_component>::back;
- using std::vector<scope_component>::empty;
- using std::vector<scope_component>::size;
- using std::vector<scope_component>::begin;
- using std::vector<scope_component>::end;
- using std::vector<scope_component>::operator[];
- compile_scope ()
- : m_nested_type (GCC_TYPE_NONE), m_pushed (false)
- {
- }
- /* Return the gcc_type of the type if it is a nested definition.
- Returns GCC_TYPE_NONE if this type was not nested. */
- gcc_type nested_type ()
- {
- return m_nested_type;
- }
- private:
- /* compile_cplus_instance is a friend class so that it can set the
- following private members when compile_scopes are created. */
- friend compile_cplus_instance;
- /* If the type was actually a nested type, this will hold that nested
- type after the scope is pushed. */
- gcc_type m_nested_type;
- /* If true, this scope was pushed to the compiler and all namespaces
- must be popped when leaving the scope. */
- bool m_pushed;
- };
- /* Comparison operators for compile_scopes. */
- bool operator== (const compile_scope &lhs, const compile_scope &rhs);
- bool operator!= (const compile_scope &lhs, const compile_scope &rhs);
- /* Convert TYPENAME into a vector of namespace and top-most/super
- composite scopes.
- For example, for the input "Namespace::classB::classInner", the
- resultant vector will contain the tokens "Namespace" and
- "classB". */
- compile_scope type_name_to_scope (const char *type_name,
- const struct block *block);
- /* A callback suitable for use as the GCC C++ symbol oracle. */
- extern gcc_cp_oracle_function gcc_cplus_convert_symbol;
- /* A callback suitable for use as the GCC C++ address oracle. */
- extern gcc_cp_symbol_address_function gcc_cplus_symbol_address;
- /* A subclass of compile_instance that is specific to the C++ front
- end. */
- class compile_cplus_instance : public compile_instance
- {
- public:
- explicit compile_cplus_instance (struct gcc_cp_context *gcc_cp)
- : compile_instance (&gcc_cp->base, m_default_cflags),
- m_plugin (gcc_cp)
- {
- m_plugin.set_callbacks (gcc_cplus_convert_symbol,
- gcc_cplus_symbol_address,
- gcc_cplus_enter_scope, gcc_cplus_leave_scope,
- this);
- }
- /* Convert a gdb type, TYPE, to a GCC type.
- If this type was defined in another type, NESTED_ACCESS should indicate
- the accessibility of this type (or GCC_CP_ACCESS_NONE if not a nested
- type). GCC_CP_ACCESS_NONE is the default nested access.
- The new GCC type is returned. */
- gcc_type convert_type
- (struct type *type,
- enum gcc_cp_symbol_kind nested_access = GCC_CP_ACCESS_NONE);
- /* Return a handle for the GCC plug-in. */
- gcc_cp_plugin &plugin () { return m_plugin; }
- /* Factory method to create a new scope based on TYPE with name TYPE_NAME.
- [TYPE_NAME could be TYPE_NAME or SYMBOL_NATURAL_NAME.]
- If TYPE is a nested or local definition, nested_type () will return
- the gcc_type of the conversion.
- Otherwise, nested_type () is GCC_TYPE_NONE. */
- compile_scope new_scope (const char *type_name, struct type *type);
- /* Enter the given NEW_SCOPE. */
- void enter_scope (compile_scope &&scope);
- /* Leave the current scope. */
- void leave_scope ();
- /* Add the qualifiers given by QUALS to BASE. */
- gcc_type convert_qualified_base (gcc_type base,
- gcc_cp_qualifiers_flags quals);
- /* Convert TARGET into a pointer type. */
- gcc_type convert_pointer_base (gcc_type target);
- /* Convert BASE into a reference type. RQUALS describes the reference. */
- gcc_type convert_reference_base (gcc_type base,
- enum gcc_cp_ref_qualifiers rquals);
- /* Return the declaration name of the symbol named NATURAL.
- This returns a name with no function arguments or template parameters,
- suitable for passing to the compiler plug-in. */
- static gdb::unique_xmalloc_ptr<char> decl_name (const char *natural);
- private:
- /* Callbacks suitable for use as the GCC C++ enter/leave scope requests. */
- static gcc_cp_enter_leave_user_expr_scope_function gcc_cplus_enter_scope;
- static gcc_cp_enter_leave_user_expr_scope_function gcc_cplus_leave_scope;
- /* Default compiler flags for C++. */
- static const char *m_default_cflags;
- /* The GCC plug-in. */
- gcc_cp_plugin m_plugin;
- /* A list of scopes we are processing. */
- std::vector<compile_scope> m_scopes;
- };
- /* Get the access flag for the NUM'th method of TYPE's FNI'th
- fieldlist. */
- enum gcc_cp_symbol_kind get_method_access_flag (const struct type *type,
- int fni, int num);
- #endif /* COMPILE_COMPILE_CPLUS_H */
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