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Removed the strexpr module and placed the implementation of the .STRING

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builtin function into the NextTok function.
Added the .CONCAT function.


git-svn-id: svn://svn.cc65.org/cc65/trunk@113 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
cuz 2000-06-23 20:49:47 +00:00
parent 66df712d40
commit 6b002da603
8 changed files with 129 additions and 174 deletions
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1
src/ca65/make/gcc.mak
View File

@ -25,7 +25,6 @@ OBJS = condasm.o \
options.o \
pseudo.o \
scanner.o \
strexpr.o \
symtab.o \
toklist.o \
ulabel.o

2
src/ca65/make/watcom.mak
View File

@ -82,7 +82,6 @@ OBJS = condasm.obj \
options.obj \
pseudo.obj \
scanner.obj \
strexpr.obj \
symtab.obj \
toklist.obj \
ulabel.obj
@ -126,7 +125,6 @@ FILE objfile.obj
FILE options.obj
FILE pseudo.obj
FILE scanner.obj
FILE strexpr.obj
FILE symtab.obj
FILE toklist.obj
FILE ulabel.obj

120
src/ca65/nexttok.c
View File

@ -33,6 +33,8 @@
#include <stdio.h>
#include "error.h"
#include "expr.h"
#include "scanner.h"
@ -93,10 +95,79 @@ static TokList* CollectTokens (unsigned Start, unsigned Count)
static void FuncConcat (void)
/* Handle the .CONCAT function */
{
char Buf[MAX_STR_LEN+1];
char* B;
unsigned Length;
unsigned L;
/* Skip it */
NextTok ();
/* Left paren expected */
ConsumeLParen ();
/* Concatenate any number of strings */
B = Buf;
B[0] = '\0';
Length = 0;
while (1) {
/* Next token must be a string */
if (Tok != TOK_STRCON) {
Error (ERR_STRCON_EXPECTED);
SkipUntilSep ();
return;
}
/* Get the length of the string const and check total length */
L = strlen (SVal);
if (Length + L > MAX_STR_LEN) {
Error (ERR_STRING_TOO_LONG);
/* Try to recover */
SkipUntilSep ();
return;
}
/* Add the new string */
memcpy (B, SVal, L);
Length += L;
B += L;
/* Skip the string token */
NextTok ();
/* Comma means another argument */
if (Tok == TOK_COMMA) {
NextTok ();
} else {
/* Done */
break;
}
}
/* Terminate the string */
*B = '\0';
/* We expect a closing parenthesis, but will not skip it but replace it
* by the string token just created.
*/
if (Tok != TOK_RPAREN) {
Error (ERR_RPAREN_EXPECTED);
} else {
Tok = TOK_STRCON;
strcpy (SVal, Buf);
}
}
static void FuncMid (void)
/* Handle the .MID function */
{
long Start;
long Start;
long Count;
TokList* List;
@ -104,13 +175,13 @@ static void FuncMid (void)
NextTok ();
/* Left paren expected */
ConsumeRParen ();
ConsumeLParen ();
/* Start argument */
Start = ConstExpression ();
if (Start < 0 || Start > 100) {
Error (ERR_RANGE);
Start = 0;
Start = 0;
}
ConsumeComma ();
@ -133,6 +204,41 @@ static void FuncMid (void)
static void FuncString (void)
/* Handle the .STRING function */
{
char Buf[MAX_STR_LEN+1];
/* Skip it */
NextTok ();
/* Left paren expected */
ConsumeLParen ();
/* Accept identifiers or numeric expressions */
if (Tok == TOK_IDENT) {
/* Save the identifier, then skip it */
strcpy (Buf, SVal);
NextTok ();
} else {
/* Numeric expression */
long Val = ConstExpression ();
sprintf (Buf, "%ld", Val);
}
/* We expect a closing parenthesis, but will not skip it but replace it
* by the string token just created.
*/
if (Tok != TOK_RPAREN) {
Error (ERR_RPAREN_EXPECTED);
} else {
Tok = TOK_STRCON;
strcpy (SVal, Buf);
}
}
void NextTok (void)
/* Get next token and handle token level functions */
{
@ -142,10 +248,18 @@ void NextTok (void)
/* Check for token handling functions */
switch (Tok) {
case TOK_CONCAT:
FuncConcat ();
break;
case TOK_MID:
FuncMid ();
break;
case TOK_STRING:
FuncString ();
break;
default:
/* Quiet down gcc */
break;

20
src/ca65/pseudo.c
View File

@ -52,7 +52,6 @@
#include "nexttok.h"
#include "objcode.h"
#include "options.h"
#include "strexpr.h"
#include "symtab.h"
#include "pseudo.h"
@ -250,7 +249,7 @@ static void DoASCIIZ (void)
/* Define text with a zero terminator */
{
while (1) {
if (StringExpression () == 0) {
if (Tok != TOK_STRCON) {
ErrorSkip (ERR_STRCON_EXPECTED);
return;
}
@ -287,7 +286,7 @@ static void DoByte (void)
/* Define bytes */
{
while (1) {
if (StringExpression () != 0) {
if (Tok == TOK_STRCON) {
/* A string */
EmitData (SVal, strlen (SVal));
NextTok ();
@ -399,7 +398,7 @@ static void DoEndProc (void)
static void DoError (void)
/* Use error */
{
if (StringExpression () == 0) {
if (Tok == TOK_STRCON) {
ErrorSkip (ERR_STRCON_EXPECTED);
} else {
Error (ERR_USER, SVal);
@ -535,7 +534,7 @@ static void DoFileOpt (void)
ConsumeComma ();
/* We accept only string options for now */
if (StringExpression () == 0) {
if (Tok != TOK_STRCON) {
ErrorSkip (ERR_STRCON_EXPECTED);
return;
}
@ -579,7 +578,7 @@ static void DoFileOpt (void)
ConsumeComma ();
/* We accept only string options for now */
if (StringExpression () == 0) {
if (Tok != TOK_STRCON) {
ErrorSkip (ERR_STRCON_EXPECTED);
return;
}
@ -656,7 +655,7 @@ static void DoIncBin (void)
/* Include a binary file */
{
/* Name must follow */
if (StringExpression () == 0) {
if (Tok != TOK_STRCON) {
ErrorSkip (ERR_STRCON_EXPECTED);
} else {
/* Try to open the file */
@ -686,7 +685,7 @@ static void DoInclude (void)
char Name [MAX_STR_LEN+1];
/* Name must follow */
if (StringExpression () == 0) {
if (Tok != TOK_STRCON) {
ErrorSkip (ERR_STRCON_EXPECTED);
} else {
strcpy (Name, SVal);
@ -823,7 +822,7 @@ static void DoOrg (void)
static void DoOut (void)
/* Output a string */
{
if (StringExpression () == 0) {
if (Tok != TOK_STRCON) {
ErrorSkip (ERR_STRCON_EXPECTED);
} else {
/* Output the string and be sure to flush the output to keep it in
@ -950,7 +949,7 @@ static void DoSegment (void)
char Name [sizeof (SVal)];
int SegType;
if (StringExpression () == 0) {
if (Tok != TOK_STRCON) {
ErrorSkip (ERR_STRCON_EXPECTED);
} else {
@ -1079,6 +1078,7 @@ static CtrlDesc CtrlCmdTab [] = {
{ ccNone, DoByte },
{ ccNone, DoCase },
{ ccNone, DoCode },
{ ccNone, DoUnexpected, }, /* .CONCAT */
{ ccNone, DoUnexpected }, /* .CONST */
{ ccNone, DoUnexpected }, /* .CPU */
{ ccNone, DoData },

1
src/ca65/scanner.c
View File

@ -136,6 +136,7 @@ struct DotKeyword {
{ "BYTE", TOK_BYTE },
{ "CASE", TOK_CASE },
{ "CODE", TOK_CODE },
{ "CONCAT", TOK_CONCAT },
{ "CONST", TOK_CONST },
{ "CPU", TOK_CPU },
{ "DATA", TOK_DATA },

1
src/ca65/scanner.h
View File

@ -118,6 +118,7 @@ enum Token {
TOK_BYTE,
TOK_CASE,
TOK_CODE,
TOK_CONCAT,
TOK_CONST,
TOK_CPU,
TOK_DATA,

97
src/ca65/strexpr.c
View File

@ -1,97 +0,0 @@
/*****************************************************************************/
/* */
/* strexpr.c */
/* */
/* String expressions for the ca65 macroassembler */
/* */
/* */
/* */
/* (C) 2000 Ullrich von Bassewitz */
/* Wacholderweg 14 */
/* D-70597 Stuttgart */
/* EMail: uz@musoftware.de */
/* */
/* */
/* This software is provided 'as-is', without any expressed or implied */
/* warranty. In no event will the authors be held liable for any damages */
/* arising from the use of this software. */
/* */
/* Permission is granted to anyone to use this software for any purpose, */
/* including commercial applications, and to alter it and redistribute it */
/* freely, subject to the following restrictions: */
/* */
/* 1. The origin of this software must not be misrepresented; you must not */
/* claim that you wrote the original software. If you use this software */
/* in a product, an acknowledgment in the product documentation would be */
/* appreciated but is not required. */
/* 2. Altered source versions must be plainly marked as such, and must not */
/* be misrepresented as being the original software. */
/* 3. This notice may not be removed or altered from any source */
/* distribution. */
/* */
/*****************************************************************************/
#include <stdio.h>
#include "error.h"
#include "expr.h"
#include "scanner.h"
#include "strexpr.h"
/*****************************************************************************/
/* Code */
/*****************************************************************************/
const char* StringExpression (void)
/* Evaluate a string expression. If there are no errors, the function will
* place the string into the token attribute buffer SVal and the token will
* be TOK_STRCON. A pointer to the buffer is returned.
* If there was an error, a NULL pointer is returned.
*/
{
char Buf [sizeof (SVal)];
/* Check for a string constant or a function that returns a string */
switch (Tok) {
case TOK_STRING:
NextTok ();
ConsumeLParen ();
if (Tok == TOK_IDENT) {
/* Save the identifier, then skip it */
strcpy (Buf, SVal);
NextTok ();
} else {
/* Numeric expression */
long Val = ConstExpression ();
sprintf (Buf, "%ld", Val);
}
if (Tok != TOK_RPAREN) {
Error (ERR_RPAREN_EXPECTED);
}
/* Overwrite the token, do not skip it! */
strcpy (SVal, Buf);
Tok = TOK_STRCON;
break;
case TOK_STRCON:
/* We already have a string */
break;
default:
/* Error - no string constant */
return 0;
}
/* Return a pointer to the buffer */
return SVal;
}

61
src/ca65/strexpr.h
View File

@ -1,61 +0,0 @@
/*****************************************************************************/
/* */
/* strexpr.h */
/* */
/* String expressions for the ca65 macroassembler */
/* */
/* */
/* */
/* (C) 2000 Ullrich von Bassewitz */
/* Wacholderweg 14 */
/* D-70597 Stuttgart */
/* EMail: uz@musoftware.de */
/* */
/* */
/* This software is provided 'as-is', without any expressed or implied */
/* warranty. In no event will the authors be held liable for any damages */
/* arising from the use of this software. */
/* */
/* Permission is granted to anyone to use this software for any purpose, */
/* including commercial applications, and to alter it and redistribute it */
/* freely, subject to the following restrictions: */
/* */
/* 1. The origin of this software must not be misrepresented; you must not */
/* claim that you wrote the original software. If you use this software */
/* in a product, an acknowledgment in the product documentation would be */
/* appreciated but is not required. */
/* 2. Altered source versions must be plainly marked as such, and must not */
/* be misrepresented as being the original software. */
/* 3. This notice may not be removed or altered from any source */
/* distribution. */
/* */
/*****************************************************************************/
#ifndef STREXPR_H
#define STREXPR_H
/*****************************************************************************/
/* Code */
/*****************************************************************************/
const char* StringExpression (void);
/* Evaluate a string expression. If there are no errors, the function will
* place the string into the token attribute buffer SVal and the token will
* be TOK_STRCON. A pointer to the buffer is returned.
* If there was an error, a NULL pointer is returned.
*/
/* End of strexpr.h */
#endif