128 lines
5.2 KiB
C
128 lines
5.2 KiB
C
/*****************************************************************************/
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/* */
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/* nexttok.h */
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/* */
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/* Get next token and handle token level functions */
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/* */
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/* */
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/* */
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/* (C) 2000-2011, Ullrich von Bassewitz */
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/* Roemerstrasse 52 */
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/* D-70794 Filderstadt */
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/* EMail: uz@cc65.org */
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/* */
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/* */
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/* This software is provided 'as-is', without any expressed or implied */
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/* warranty. In no event will the authors be held liable for any damages */
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/* arising from the use of this software. */
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/* */
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/* Permission is granted to anyone to use this software for any purpose, */
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/* including commercial applications, and to alter it and redistribute it */
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/* freely, subject to the following restrictions: */
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/* */
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/* 1. The origin of this software must not be misrepresented; you must not */
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/* claim that you wrote the original software. If you use this software */
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/* in a product, an acknowledgment in the product documentation would be */
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/* appreciated but is not required. */
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/* 2. Altered source versions must be plainly marked as such, and must not */
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/* be misrepresented as being the original software. */
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/* 3. This notice may not be removed or altered from any source */
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/* distribution. */
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/* */
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/*****************************************************************************/
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#ifndef NEXTTOK_H
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#define NEXTTOK_H
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#include "scanner.h"
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/*****************************************************************************/
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/* Code */
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/*****************************************************************************/
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void NextTok (void);
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/* Get next token and handle token level functions */
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void ErrorExpect (const char* Msg);
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/* Output an error message about some expected token using Msg and the
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* description of the following token. This means that Msg should contain
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* something like "xyz expected". The actual error message would then be
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* "xyz expected but found zyx".
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*/
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int Expect (token_t Expected, const char* Msg);
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/* Check if the next token is the expected one. If not, print Msg plus some
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* information about the token that was actually found. This means that Msg
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* should contain something like "xyz expected". The actual error message would
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* then be "xyz expected but found zyx".
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* Returns true if the token was found, otherwise false.
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*/
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int ExpectSkip (token_t Expected, const char* Msg);
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/* Check if the next token is the expected one. If not, print Msg plus some
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* information about the token that was actually found and skip the remainder
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* of the line. This means that Msg should contain something like "xyz
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* expected". The actual error message would then be "xyz expected but found
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* zyx".
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* Returns true if the token was found, otherwise false.
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*/
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int Consume (token_t Expected, const char* ErrMsg);
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/* Consume Token, print an error if we don't find it. Return true if the token
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** was found and false otherwise.
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*/
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int ConsumeSep (void);
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/* Consume a separator token. Return true if the token was found and false
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* otherwise.
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*/
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int ConsumeLParen (void);
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/* Consume a left paren. Return true if the token was found and false
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** otherwise.
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*/
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int ConsumeRParen (void);
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/* Consume a right paren. Return true if the token was found and false
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** otherwise.
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*/
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int ConsumeComma (void);
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/* Consume a comma. Return true if the token was found and false
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** otherwise.
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*/
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void SkipUntilSep (void);
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/* Skip tokens until we reach a line separator or end of file */
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int ExpectSep (void);
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/* Check if we've reached a line separator. If so, return true. If not, output
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** an error and skip all tokens until the line separator is reached. Then
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** return false.
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*/
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void EnterRawTokenMode (void);
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/* Enter raw token mode. In raw mode, token handling functions are not
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** executed, but the function tokens are passed untouched to the upper
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** layer. Raw token mode is used when storing macro tokens for later
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** use.
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** Calls to EnterRawTokenMode and LeaveRawTokenMode may be nested.
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*/
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void LeaveRawTokenMode (void);
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/* Leave raw token mode. */
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/* End of nexttok.h */
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#endif
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