mirror of
https://github.com/RevCurtisP/C02.git
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169 lines
3.5 KiB
C
169 lines
3.5 KiB
C
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/*************************************
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* C02 Include File Parsing Routines *
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*************************************/
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#include <stdio.h>
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#include <stdlib.h>
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#include <ctype.h>
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#include <string.h>
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#include <errno.h>
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#include "common.h"
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#include "files.h"
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#include "asm.h"
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#include "parse.h"
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#include "vars.h"
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#include "include.h"
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/* Reads next include file name from Source File *
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* Sets: incnam - the include file name */
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void pincnm()
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{
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char dlmtr;
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int inclen = 0;
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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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inclen = strlen(incnam);
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dlmtr = '>';
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}
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else if (dlmtr != '"')
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ERROR("Unexpected character '%c' after include\n", dlmtr, EXIT_FAILURE);
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while (!match(dlmtr))
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{
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incnam[inclen++] = nxtchr;
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skpchr();
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}
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skpchr(); //skip end dlmtr
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incnam[inclen] = 0;
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}
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/* Process assembly language include file */
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void incasm() {
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opninc();
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setcmt("======== Assembler File ");
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addcmt(incnam);
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addcmt(" =======");
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cmtlin();
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while (fgets(line, sizeof line, incfil) != NULL) {
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DEBUG("Writing line: %s", line);
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fputs(line, outfil);
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}
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setcmt("==========================================");
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cmtlin();
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clsinc();
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}
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/* Process Include File Directive */
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void pincdr()
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{
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skpchr(); //skip '#'
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getwrd(); //read directive into word
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DEBUG("Processing include file directive '%s'\n", word);
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if (wordis("define"))
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prsdef();
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else {
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printf("Unrecognized directive '%s'\n", word);
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exterr(EXIT_FAILURE);
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}
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}
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/* Parse Header Word */
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void phdwrd() {
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getwrd();
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if (wordis("void"))
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pdecl(VTVOID);
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else if (wordis("char"))
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pdecl(VTCHAR);
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else {
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printf("Unexpected word '%s' in header\n", word);
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exterr(EXIT_FAILURE);
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}
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}
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/* Save Source File Information */
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void savsrc() {
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savchr = nxtchr;
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savcol = curcol;
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savlin = curlin;
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}
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/* Set Include File Information */
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void setinc() {
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curcol = 0;
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curlin = 0;
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inpfil = incfil;
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strcpy(inpnam, incnam);
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alcvar = FALSE;
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}
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/* Restore Source File Pointer*/
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void rstsrc() {
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nxtchr = savchr;
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nxtupc = toupper(nxtchr);
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curcol = savcol;
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curlin = savlin;
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inpfil = srcfil;
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strcpy(inpnam, srcnam);
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alcvar = TRUE;
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}
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/* Process header include file */
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void inchdr() {
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savsrc(); //Save Source File Information
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opninc(); //Open Include File
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setinc(); //Set Include File Information
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skpchr();
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while (TRUE)
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{
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skpspc();
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if (match(EOF)) break;
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DEBUG("Checking next character '%c'\n", nxtchr);
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if (match('#'))
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pincdr();
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else if (match('/'))
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skpcmt();
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else if (isalph())
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phdwrd();
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else
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{
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printf("Unexpected character '%c'\n", nxtchr);
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exterr(EXIT_FAILURE);
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}
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}
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clsinc();
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rstsrc();
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nxtchr = savchr;
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}
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/* Process header include file */
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void include_hfil() {
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ERROR("Header files with extension .h not supported", 0, EXIT_FAILURE);
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}
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/* Process include file */
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void pincfl()
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{
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pincnm(); //Parse Include File Name
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DEBUG("Processing include file '%s'\n", incnam);
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char *dot = strrchr(incnam, '.'); //find extension
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if (dot == NULL) {
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printf("Invalid include file name '%sn", incnam);
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exterr(EXIT_FAILURE);
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}
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if (strcmp(dot, ".asm") == 0)
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incasm();
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else if (strcmp(dot, ".h") == 0)
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include_hfil();
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else if (strcmp(dot, ".h02") == 0) {
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inchdr(); //Process Header File
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strcpy(dot, ".asm");
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incasm(); //Process Assembly File with Same Name
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}
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else {
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printf("Unrecognized include file extension '%s'\n'", dot);
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exterr(EXIT_FAILURE);
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}
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}
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