/* 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) 1987-2023 Free Software Foundation, Inc. Written by Benjamin Chelf This file is part of GCC. GCC 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, or (at your option) any later version. GCC 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 GCC; see the file COPYING3. If not see . */ /* Tree nodes used in the C frontend. These are also shared with the C++ and Objective C frontends. */ /* A C_MAYBE_CONST_EXPR, currently only used for C and Objective C, tracks information about constancy of an expression and VLA type sizes or VM expressions from typeof that need to be evaluated before the main expression. It is used during parsing and removed in c_fully_fold. C_MAYBE_CONST_EXPR_PRE is the expression to evaluate first, if not NULL; C_MAYBE_CONST_EXPR_EXPR is the main expression. If C_MAYBE_CONST_EXPR_INT_OPERANDS is set then the expression may be used in an unevaluated part of an integer constant expression, but not in an evaluated part. If C_MAYBE_CONST_EXPR_NON_CONST is set then the expression contains something that cannot occur in an evaluated part of a constant expression (or outside of sizeof in C90 mode); otherwise it does not. */ DEFTREECODE (C_MAYBE_CONST_EXPR, "c_maybe_const_expr", tcc_expression, 2) /* An EXCESS_PRECISION_EXPR represents an expression evaluated in greater range or precision than its type. The type of the EXCESS_PRECISION_EXPR is the semantic type while the operand represents what is actually being evaluated. */ DEFTREECODE (EXCESS_PRECISION_EXPR, "excess_precision_expr", tcc_expression, 1) /* Used to represent a user-defined literal. The operands are an IDENTIFIER for the suffix, the VALUE of the literal, and for numeric literals the original string representation of the number. */ DEFTREECODE (USERDEF_LITERAL, "userdef_literal", tcc_exceptional, 3) /* Represents a 'sizeof' expression during C++ template expansion, or for the purpose of -Wsizeof-pointer-memaccess warning. */ DEFTREECODE (SIZEOF_EXPR, "sizeof_expr", tcc_expression, 1) /* Like above, but enclosed in parentheses. Used to suppress warnings. */ DEFTREECODE (PAREN_SIZEOF_EXPR, "paren_sizeof_expr", tcc_expression, 1) /* Used to represent a `for' statement. The operands are FOR_INIT_STMT, FOR_COND, FOR_EXPR, FOR_BODY, and FOR_SCOPE, respectively. */ DEFTREECODE (FOR_STMT, "for_stmt", tcc_statement, 5) /* Used to represent a 'while' statement. The operands are WHILE_COND and WHILE_BODY, respectively. */ DEFTREECODE (WHILE_STMT, "while_stmt", tcc_statement, 2) /* Used to represent a 'do' statement. The operands are DO_COND and DO_BODY, respectively. */ DEFTREECODE (DO_STMT, "do_stmt", tcc_statement, 2) /* Used to represent a 'break' statement. */ DEFTREECODE (BREAK_STMT, "break_stmt", tcc_statement, 0) /* Used to represent a 'continue' statement. */ DEFTREECODE (CONTINUE_STMT, "continue_stmt", tcc_statement, 0) /* Used to represent a 'switch' statement. The operands are SWITCH_STMT_COND, SWITCH_STMT_BODY, SWITCH_STMT_TYPE, and SWITCH_STMT_SCOPE, respectively. */ DEFTREECODE (SWITCH_STMT, "switch_stmt", tcc_statement, 4) /* Extensions for C++ Concepts. */ /* Concept definition. This is not entirely different than a VAR_DECL except that a) it must be a template, and b) doesn't have the wide range of value and linkage options available to variables. Used by C++ FE and in c-family attribute handling. */ DEFTREECODE (CONCEPT_DECL, "concept_decl", tcc_declaration, 0) /* Local variables: mode:c End: */