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/* |
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* Syntax Routines |
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* by Tom Epperly |
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* Created: 3/22/1990 |
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* Version: $Revision: 1.9 $ |
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* Version control file: $RCSfile: syntax.h,v $ |
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* Date last modified: $Date: 1998/04/12 18:31:16 $ |
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* Last modified by: $Author: ballan $ |
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* |
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* This file is part of the Ascend Language Interpreter. |
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* |
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* Copyright (C) 1990, 1993, 1994 Thomas Guthrie Epperly |
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* |
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* The Ascend Language Interpreter is free software; you can redistribute |
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* it and/or modify it under the terms of the GNU General Public License as |
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* published by the Free Software Foundation; either version 2 of the |
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* License, or (at your option) any later version. |
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* |
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* The Ascend Language Interpreter is distributed in hope that it will be |
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* useful, but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License along |
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* with the program; if not, write to the Free Software Foundation, Inc., 675 |
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* Mass Ave, Cambridge, MA 02139 USA. Check the file named COPYING. |
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*/ |
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|
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/** @file |
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* Syntax Routines. |
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* These routines support the yacc parsing file ascParse.y. This module |
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* provides functions to check syntax. |
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* <pre> |
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* When #including syntax.h, make sure these files are #included first: |
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* #include "utilities/ascConfig.h" |
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* #include "compiler/fractions.h" |
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* #include "compiler/compiler.h" |
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* #include "compiler/dimen.h" |
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* #include "compiler/types.h" |
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* #include "compiler/exprs.h" |
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* #include "compiler/stattypes.h" |
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* </pre> |
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*/ |
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|
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#ifndef ASC_SYNTAX_H |
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#define ASC_SYNTAX_H |
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|
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/** addtogroup compiler Compiler |
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@{ |
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*/ |
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|
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extern unsigned NumberOfRelOps(struct Expr *ex); |
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/**< |
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* Counts the number of relation operators in the given Expr. |
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* |
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* @param ex The expresion to evaluate. |
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* @return The number of relation operators in ex. |
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*/ |
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|
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extern int IsRelation(struct Expr *ex); |
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/**< |
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* Tests whether an expression is a real or logical relation. |
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* |
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* @param ex The expresion to test. |
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* @return Returns 1 if ex is a real relation, 0 if a |
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* logical relation. |
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* @todo compiler/syntax:IsRelation() notated as broken in source file. |
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* Fix or remove comment. |
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*/ |
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|
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extern int GetParseRelnsFlag(void); |
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/**< |
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* Retrieves the value of the parse relations flag. If this flag is |
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* non-zero (the default), normal ASCEND relations will be parsed. |
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* If it is 0, they will not be. This flag does not affect |
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* external relations. |
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* |
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* @return The current value of the parse relations flag. |
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*/ |
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|
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ASC_DLLSPEC void SetParseRelnsFlag(int flag); |
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/**< |
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* Sets the parse relations flag. Any nonzero integer will |
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* cause relations to be parsed (see GetParseRelnsFlag()). |
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* Later it may be given more meaning. |
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* |
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* @param flag The new value for the parse relations flag. |
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*/ |
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|
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/* @} */ |
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|
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#endif /* ASC_SYNTAX_H */ |
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