| /* Definitions for Rust expressions |
| |
| Copyright (C) 2020 Free Software Foundation, Inc. |
| |
| This file is part of GDB. |
| |
| 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 RUST_EXP_H |
| #define RUST_EXP_H |
| |
| #include "expop.h" |
| |
| extern struct value *eval_op_rust_complement (struct type *expect_type, |
| struct expression *exp, |
| enum noside noside, |
| enum exp_opcode opcode, |
| struct value *value); |
| extern struct value *eval_op_rust_array (struct type *expect_type, |
| struct expression *exp, |
| enum noside noside, |
| enum exp_opcode opcode, |
| struct value *ncopies, |
| struct value *elt); |
| extern struct value *eval_op_rust_ind (struct type *expect_type, |
| struct expression *exp, |
| enum noside noside, |
| enum exp_opcode opcode, |
| struct value *value); |
| extern struct value *rust_subscript (struct type *expect_type, |
| struct expression *exp, |
| enum noside noside, bool for_addr, |
| struct value *lhs, struct value *rhs); |
| extern struct value *rust_range (struct type *expect_type, |
| struct expression *exp, |
| enum noside noside, enum range_flag kind, |
| struct value *low, struct value *high); |
| extern struct value *eval_op_rust_struct_anon (struct type *expect_type, |
| struct expression *exp, |
| enum noside noside, |
| int field_number, |
| struct value *lhs); |
| extern struct value *eval_op_rust_structop (struct type *expect_type, |
| struct expression *exp, |
| enum noside noside, |
| struct value *lhs, |
| const char *field_name); |
| |
| namespace expr |
| { |
| |
| using rust_unop_compl_operation = unop_operation<UNOP_COMPLEMENT, |
| eval_op_rust_complement>; |
| using rust_array_operation = binop_operation<OP_RUST_ARRAY, |
| eval_op_rust_array>; |
| |
| /* The Rust indirection operation. */ |
| class rust_unop_ind_operation |
| : public unop_ind_operation |
| { |
| public: |
| |
| using unop_ind_operation::unop_ind_operation; |
| |
| value *evaluate (struct type *expect_type, |
| struct expression *exp, |
| enum noside noside) override |
| { |
| if (noside != EVAL_NORMAL) |
| return unop_ind_operation::evaluate (expect_type, exp, noside); |
| |
| value *arg1 = std::get<0> (m_storage)->evaluate (nullptr, exp, noside); |
| return eval_op_rust_ind (expect_type, exp, noside, UNOP_IND, arg1); |
| } |
| }; |
| |
| /* Subscript operator for Rust. */ |
| class rust_subscript_operation |
| : public tuple_holding_operation<operation_up, operation_up> |
| { |
| public: |
| |
| using tuple_holding_operation::tuple_holding_operation; |
| |
| value *evaluate (struct type *expect_type, |
| struct expression *exp, |
| enum noside noside) override |
| { |
| value *arg1 = std::get<0> (m_storage)->evaluate (nullptr, exp, noside); |
| value *arg2 = std::get<1> (m_storage)->evaluate (nullptr, exp, noside); |
| return rust_subscript (expect_type, exp, noside, false, arg1, arg2); |
| } |
| |
| value *slice (struct type *expect_type, |
| struct expression *exp, |
| enum noside noside) |
| { |
| value *arg1 = std::get<0> (m_storage)->evaluate (nullptr, exp, noside); |
| value *arg2 = std::get<1> (m_storage)->evaluate (nullptr, exp, noside); |
| return rust_subscript (expect_type, exp, noside, true, arg1, arg2); |
| } |
| |
| enum exp_opcode opcode () const override |
| { return BINOP_SUBSCRIPT; } |
| }; |
| |
| class rust_unop_addr_operation |
| : public tuple_holding_operation<operation_up> |
| { |
| public: |
| |
| using tuple_holding_operation::tuple_holding_operation; |
| |
| value *evaluate (struct type *expect_type, |
| struct expression *exp, |
| enum noside noside) override |
| { |
| operation *oper = std::get<0> (m_storage).get (); |
| rust_subscript_operation *sub_op |
| = dynamic_cast<rust_subscript_operation *> (oper); |
| if (sub_op != nullptr) |
| return sub_op->slice (expect_type, exp, noside); |
| return oper->evaluate_for_address (exp, noside); |
| } |
| |
| enum exp_opcode opcode () const override |
| { return UNOP_ADDR; } |
| }; |
| |
| /* The Rust range operators. */ |
| class rust_range_operation |
| : public tuple_holding_operation<enum range_flag, operation_up, operation_up> |
| { |
| public: |
| |
| using tuple_holding_operation::tuple_holding_operation; |
| |
| value *evaluate (struct type *expect_type, |
| struct expression *exp, |
| enum noside noside) override |
| { |
| auto kind = std::get<0> (m_storage); |
| value *low = nullptr; |
| if (std::get<1> (m_storage) != nullptr) |
| low = std::get<1> (m_storage)->evaluate (nullptr, exp, noside); |
| value *high = nullptr; |
| if (std::get<2> (m_storage) != nullptr) |
| high = std::get<2> (m_storage)->evaluate (nullptr, exp, noside); |
| return rust_range (expect_type, exp, noside, kind, low, high); |
| } |
| |
| enum exp_opcode opcode () const override |
| { return OP_RANGE; } |
| }; |
| |
| /* Tuple field reference (using an integer). */ |
| class rust_struct_anon |
| : public tuple_holding_operation<int, operation_up> |
| { |
| public: |
| |
| using tuple_holding_operation::tuple_holding_operation; |
| |
| value *evaluate (struct type *expect_type, |
| struct expression *exp, |
| enum noside noside) override |
| { |
| value *lhs = std::get<1> (m_storage)->evaluate (nullptr, exp, noside); |
| return eval_op_rust_struct_anon (expect_type, exp, noside, |
| std::get<0> (m_storage), lhs); |
| |
| } |
| |
| enum exp_opcode opcode () const override |
| { return STRUCTOP_ANONYMOUS; } |
| }; |
| |
| /* Structure (or union or enum) field reference. */ |
| class rust_structop |
| : public structop_base_operation |
| { |
| public: |
| |
| using structop_base_operation::structop_base_operation; |
| |
| value *evaluate (struct type *expect_type, |
| struct expression *exp, |
| enum noside noside) override |
| { |
| value *lhs = std::get<0> (m_storage)->evaluate (nullptr, exp, noside); |
| return eval_op_rust_structop (expect_type, exp, noside, lhs, |
| std::get<1> (m_storage).c_str ()); |
| } |
| |
| value *evaluate_funcall (struct type *expect_type, |
| struct expression *exp, |
| enum noside noside, |
| const std::vector<operation_up> &args) override; |
| |
| enum exp_opcode opcode () const override |
| { return STRUCTOP_STRUCT; } |
| }; |
| |
| /* Rust aggregate initialization. */ |
| class rust_aggregate_operation |
| : public tuple_holding_operation<struct type *, operation_up, |
| std::vector<std::pair<std::string, |
| operation_up>>> |
| { |
| public: |
| |
| using tuple_holding_operation::tuple_holding_operation; |
| |
| value *evaluate (struct type *expect_type, |
| struct expression *exp, |
| enum noside noside) override; |
| |
| enum exp_opcode opcode () const override |
| { return OP_AGGREGATE; } |
| }; |
| |
| } /* namespace expr */ |
| |
| #endif /* RUST_EXP_H */ |