mirror of
https://github.com/RevCurtisP/C02.git
synced 2024-06-20 08:29:29 +00:00
Fixed bug with constant parsing and array indexes.
This commit is contained in:
Curtis F Kaylor
parent
883c927301
commit
0e12946dd2
6
c02.c
6
c02.c
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@ -36,6 +36,7 @@ void init()
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curlin = 0;
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inpfil = srcfil;
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strcpy(inpnam, srcnam);
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strcpy(incdir, "../include/");
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alcvar = TRUE;
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inblck = FALSE;
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xstmnt[0] = 0;
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@ -43,12 +44,11 @@ void init()
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nxtptr = 0;
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vrwrtn = FALSE;
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zpaddr = 0;
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invasc = FALSE;
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}
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/* Reads and parses the next Word in Source File */
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pword()
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void pword()
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{
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lsrtrn = FALSE; //Clear RETURN flag
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getwrd();
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5
expr.c
5
expr.c
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@ -51,7 +51,7 @@ void chkidx()
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prsidx();
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if (valtyp == CONSTANT) {
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strcat(term, "+");
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strcat(term, value);
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strcat(term, word);
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}
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else if (strcmp(value, "Y")==0)
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strcat(term, ",Y");
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@ -120,7 +120,7 @@ void prsstr(adract)
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DEBUG("Parsing anonymous string\n", 0);
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newlbl(vrname); //Generate Variable Name
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value[0] = 0; //Use Variable Size 0
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setvar(VTCHAR); //Set Variable Name, Type, and Size
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setvar(MTNONE, VTCHAR); //Set Variable Name, Type, and Size
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prsdts(); //Parse Data String
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setdat(); //Set Variable Data
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varcnt++; //Increment Variable Counter
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@ -187,7 +187,6 @@ void prsftm()
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}
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if (wordis("A"))
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return;
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//if (ispopr()) oper = prspst(0, term); //Check for Post-Operator
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if (wordis("X"))
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asmlin("TXA", "");
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else if (wordis("Y"))
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20
include.c
20
include.c
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@ -24,7 +24,7 @@ void pincnm()
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skpspc();
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dlmtr = getnxt();
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if (dlmtr == '<') {
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strcpy(incnam, "include/");
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strcpy(incnam, incdir);
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inclen = strlen(incnam);
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dlmtr = '>';
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}
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@ -68,6 +68,20 @@ void pdefin()
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DEBUG("Defined as '%s'\n", value);
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}
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/* Parse ASCII Subdirective */
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void pascii()
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{
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getwrd(); //Get Pragma Subdirective
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if (wordis("INVERT")) {
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invasc = TRUE;
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}
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else {
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printf("Unrecognized option '%s'\n", word);
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exterr(EXIT_FAILURE);
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}
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}
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/* Parse Origin Subdirective */
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void porign()
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{
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@ -97,7 +111,9 @@ void pprgma()
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{
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getwrd(); //Get Pragma Subdirective
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DEBUG("Parsing pragma directive '%s'\n", word);
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if (wordis("ORIGIN"))
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if (wordis("ASCII"))
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pascii(); //Parse Ascii
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else if (wordis("ORIGIN"))
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porign(); //Parse Origin
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else if (wordis("VARTABLE"))
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pvrtbl(); //Parse Vartable
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40
parse.c
40
parse.c
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@ -33,6 +33,9 @@ int isoper() {return TF(strchr("+-&|^", nxtchr));}
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int ispopr() {return TF(strchr("+-<>", nxtchr));}
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int isxpre() {return TF(isvpre() || match('-'));}
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/* Conversion Functions */
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char invchr(char c) {return isalpha(c)?(islower(c)?toupper(c):tolower(c)):c;}
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/* if Word is s then return TRUE else return FALSE*/
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int wordis(char *s)
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{
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@ -165,6 +168,7 @@ void getstr() {
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if (match('\\'))
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escnxt = TRUE;
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else
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if (invasc) nxtchr = invchr(nxtchr);
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word[wrdlen++] = nxtchr;
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skpchr();
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}
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@ -228,12 +232,12 @@ int prshex()
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int wrdlen = 0;
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int digit;
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int number = 0;
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DEBUG("Parsing hexadecimal constant\n", 0);
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DEBUG("Parsing hexadecimal constant '", 0);
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if (!match('$'))
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expctd("hexadecimal number");
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word[wrdlen++] = getnxt();
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while (ishexd()) {
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DEBUG("Found hex digit '%c'\n", nxtchr);
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DETAIL("%c", nxtchr);
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word[wrdlen++] = nxtchr;
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if (isdec())
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digit = nxtchr - '0';
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@ -242,6 +246,7 @@ int prshex()
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number = number * 16 + digit;
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skpchr();
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}
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DETAIL("'\n", 0);
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word[wrdlen] = 0;
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return (number);
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}
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@ -261,6 +266,7 @@ int prschr()
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word[wrdlen++] = getnxt();
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c = getnxt();
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DEBUG("Extracted character %c\n", c);
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if (invasc) c = invchr(c);
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word[wrdlen++] = c;
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expect('\'');
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word[wrdlen++] = '\'';
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@ -290,8 +296,8 @@ int prsnum(int maxval)
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default:
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number = prsdec();
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}
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DEBUG("Parsed number '%s'\n", word);
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DEBUG("with value '%d'\n", number);
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DEBUG("Parsed number '%s' ", word);
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DETAIL("with value '%d'\n", number);
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if (number > maxval) {
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ERROR("Out of bounds constant '%d';\n", number, EXIT_FAILURE);
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@ -333,8 +339,12 @@ int prsdef()
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/* Parse numeric constant *
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* Args: maxval - maximum allowed value *
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* Sets: cnstnt - the constant (as an integer) *
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* value - the constant (as a string) *
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* valtyp - value type (CONSTANT) */
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* value - the constant (as asm arg) *
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* valtyp - value type (CONSTANT) *
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* word - constant (as a string) *
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* Note: Value is converted to hexadecimal *
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* because DASM uses the format 'c for *
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* character arguments instead of 'c' */
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void prscon()
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{
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skpspc();
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@ -344,6 +354,7 @@ void prscon()
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cnstnt = prsbyt();
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valtyp = CONSTANT;
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ACMNT(word);
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strcpy(word, value); //Patch for DASM
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strcpy(value, "#");
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strcat(value, word);
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DEBUG("Generated constant '%s'\n", value);
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@ -382,11 +393,20 @@ void prsopr()
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skpspc();
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}
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void prcpst(char* name)
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void prcidx(char *name, char *index)
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{
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if (strlen(index)) {
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asmlin("LDX", index);
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strcat(name,",X");
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}
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}
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void prcpst(char* name, char *index)
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{
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DEBUG("Processing post operation '%c'\n", oper);
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prcidx(name, index);
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switch(oper)
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{
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{
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case '+':
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if (strcmp(name, "X")==0)
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asmlin("INX", "");
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@ -434,7 +454,7 @@ void prcpst(char* name)
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}
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/* Parse Post Operator */
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int prspst(char trmntr, char* name) {
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int prspst(char trmntr, char* name, char* index) {
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oper = getnxt();
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CCMNT(oper);
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DEBUG("Checking for post operation '%c'\n", oper);
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@ -442,7 +462,7 @@ int prspst(char trmntr, char* name) {
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skpchr();
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CCMNT(oper);
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expect(trmntr);
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prcpst(name); //Process Post-Op
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prcpst(name, index); //Process Post-Op
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oper = 0;
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}
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else {
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30
stmnt.c
30
stmnt.c
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@ -33,29 +33,6 @@ void prssif(char trmntr) {
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void prcasn(char trmntr)
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{
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expect('=');
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/*
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if (strlen(asnvar) == 1 && strchr("XY", asnvar[0])) {
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DEBUG("Processing assignment of register '%s'\n", asnvar);
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prsval(TRUE); //Get value to assign
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expect(trmntr);
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if (strlen(value) == 1 && strchr("XY", value[0])) {
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ERROR("Illegal Reference to Register %s\n", value, EXIT_FAILURE);
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}
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if (asnvar[0] == 'X') {
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if (strcmp(value, "A") == 0)
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asmlin("TAX", "");
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else
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asmlin("LDX", value);
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}
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else {
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if (strcmp(value, "A") == 0)
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asmlin("TAY", "");
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else
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asmlin("LDY", value);
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}
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return;
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}
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*/
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DEBUG("Processing assignment of variable '%s'\n", asnvar);
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if (look('('))
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prssif(trmntr); //Parse Shortcut If
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@ -99,12 +76,15 @@ void prcvar(char trmntr)
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if (valtyp == ARRAY) {
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prsidx(); //Parse Array Index
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asnivt = valtyp;
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strncpy(asnidx, value, VARLEN);
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if (asnivt == CONSTANT)
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strncpy(asnidx, word, VARLEN);
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else
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strncpy(asnidx, value, VARLEN);
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}
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else
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asnidx[0] = 0;
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if (ispopr()) {
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if (prspst(trmntr, asnvar)) //Parse Post Operator
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if (prspst(trmntr, asnvar, asnidx)) //Parse Post Operator
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expctd("post operator");
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}
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else
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25
vars.c
25
vars.c
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@ -138,7 +138,8 @@ void setdat()
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datvar[dsize++] = value[i];
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}
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datlen[varcnt] = dlen;
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dattyp[varcnt] = dtype;
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dattyp[varcnt] = dtype;
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DEBUG("Total data alllocated: %d bytes\n", dsize);
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}
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/* Parse and store variable data */
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@ -164,13 +165,14 @@ void prsdat()
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/* Add Variable to Variable table *
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* Uses: word - variable name *
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* value - variable size */
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void setvar(int t)
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void setvar(int m, int t)
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{
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DEBUG("Adding variable '%s'\n", word);
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DEBUG("Added variable '%s' ", word);
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strncpy(varnam[varcnt], vrname, VARLEN);
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varmod[varcnt] = m;
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vartyp[varcnt] = t;
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strncpy(varsiz[varcnt], value, 3);
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DEBUG("Added at index %d\n", varcnt);
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DETAIL("at index %d\n", varcnt);
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}
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/* Parse and Compile Variable Declaration *
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@ -190,7 +192,7 @@ void addvar(int m, int t)
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}
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else
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pvarsz(); //Check for Array Declaration and Get Size
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setvar(t); //Add to Variable Table
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setvar(m, t); //Add to Variable Table
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if (m != MTZP)
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prsdat(); //Parse Variable Data
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varcnt++; //Increment Variable Counter
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@ -252,6 +254,8 @@ void pdecl(int m, int t)
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break;
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}
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expect(';');
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DEBUG("Variable Declaration Completed\n", 0);
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SCMNT(""); //Clear Assembler Comment
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}
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/* Check for and Parse Type Keyword */
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@ -264,6 +268,7 @@ int ptype(int m)
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pdecl(m, VTCHAR); //Parse 'char' declaration
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else
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result = FALSE;
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//DEBUG("Returning %d from function ptype\n", result)'
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return result;
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}
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@ -272,7 +277,11 @@ int pmodfr()
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{
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DEBUG("Parsing modifier '%s'\n", word);
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int result = TRUE;
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if (wordis("ZEROPAGE")) {
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if (wordis("ALIGNED")) {
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getwrd();
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ptype(MTALGN);
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}
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else if (wordis("ZEROPAGE")) {
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getwrd();
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ptype(MTZP);
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}
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@ -308,6 +317,10 @@ void vartbl()
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DEBUG("Set Label to '%s'\n", lblasm);
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if (strcmp(varsiz[i], "*") == 0)
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continue;
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if (varmod[i] == MTALGN) {
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DEBUG("Alligning variable '%s'\n", varnam[i]);
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asmlin(ALNOP, "256");
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}
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if (datlen[i])
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vardat(i); //Write Variable Data
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else if (strlen(varsiz[i]) > 0) {
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