97 lines
4.1 KiB
Modula-2
97 lines
4.1 KiB
Modula-2
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/* This file contains the definitions and documentation for the
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additional tree codes used in the GNU C compiler (see tree.def
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for the standard codes).
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Copyright (C) 1987-2023 Free Software Foundation, Inc.
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Written by Benjamin Chelf <chelf@codesourcery.com>
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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/* Tree nodes used in the C frontend. These are also shared with the
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C++ and Objective C frontends. */
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/* A C_MAYBE_CONST_EXPR, currently only used for C and Objective C,
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tracks information about constancy of an expression and VLA type
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sizes or VM expressions from typeof that need to be evaluated
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before the main expression. It is used during parsing and removed
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in c_fully_fold. C_MAYBE_CONST_EXPR_PRE is the expression to
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evaluate first, if not NULL; C_MAYBE_CONST_EXPR_EXPR is the main
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expression. If C_MAYBE_CONST_EXPR_INT_OPERANDS is set then the
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expression may be used in an unevaluated part of an integer
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constant expression, but not in an evaluated part. If
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C_MAYBE_CONST_EXPR_NON_CONST is set then the expression contains
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something that cannot occur in an evaluated part of a constant
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expression (or outside of sizeof in C90 mode); otherwise it does
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not. */
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DEFTREECODE (C_MAYBE_CONST_EXPR, "c_maybe_const_expr", tcc_expression, 2)
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/* An EXCESS_PRECISION_EXPR represents an expression evaluated in greater
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range or precision than its type. The type of the EXCESS_PRECISION_EXPR
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is the semantic type while the operand represents what is actually being
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evaluated. */
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DEFTREECODE (EXCESS_PRECISION_EXPR, "excess_precision_expr", tcc_expression, 1)
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/* Used to represent a user-defined literal.
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The operands are an IDENTIFIER for the suffix, the VALUE of the literal,
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and for numeric literals the original string representation of the
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number. */
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DEFTREECODE (USERDEF_LITERAL, "userdef_literal", tcc_exceptional, 3)
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/* Represents a 'sizeof' expression during C++ template expansion,
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or for the purpose of -Wsizeof-pointer-memaccess warning. */
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DEFTREECODE (SIZEOF_EXPR, "sizeof_expr", tcc_expression, 1)
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/* Like above, but enclosed in parentheses. Used to suppress warnings. */
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DEFTREECODE (PAREN_SIZEOF_EXPR, "paren_sizeof_expr", tcc_expression, 1)
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/* Used to represent a `for' statement. The operands are
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FOR_INIT_STMT, FOR_COND, FOR_EXPR, FOR_BODY, and FOR_SCOPE,
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respectively. */
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DEFTREECODE (FOR_STMT, "for_stmt", tcc_statement, 5)
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/* Used to represent a 'while' statement. The operands are WHILE_COND
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and WHILE_BODY, respectively. */
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DEFTREECODE (WHILE_STMT, "while_stmt", tcc_statement, 2)
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/* Used to represent a 'do' statement. The operands are DO_COND and
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DO_BODY, respectively. */
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DEFTREECODE (DO_STMT, "do_stmt", tcc_statement, 2)
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/* Used to represent a 'break' statement. */
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DEFTREECODE (BREAK_STMT, "break_stmt", tcc_statement, 0)
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/* Used to represent a 'continue' statement. */
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DEFTREECODE (CONTINUE_STMT, "continue_stmt", tcc_statement, 0)
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/* Used to represent a 'switch' statement. The operands are
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SWITCH_STMT_COND, SWITCH_STMT_BODY, SWITCH_STMT_TYPE, and
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SWITCH_STMT_SCOPE, respectively. */
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DEFTREECODE (SWITCH_STMT, "switch_stmt", tcc_statement, 4)
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/* Extensions for C++ Concepts. */
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/* Concept definition. This is not entirely different than a VAR_DECL
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except that a) it must be a template, and b) doesn't have the wide
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range of value and linkage options available to variables. Used
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by C++ FE and in c-family attribute handling. */
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DEFTREECODE (CONCEPT_DECL, "concept_decl", tcc_declaration, 0)
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/*
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Local variables:
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mode:c
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End:
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*/
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