#include "common.h"#include "code.h"#define BLOCKSIZE	100 Code *cdfreep = NULL; Code *CodeGetBlock(void){	static int count = 0;	static Code *blockp = NULL;	Code *cp; 	if(cdfreep){		cp = cdfreep;		cdfreep = cdfreep->prev;	}else{		if(!count){			blockp = Malloc(BLOCKSIZE*sizeof(Code));			count = BLOCKSIZE;		}		cp = blockp++;		count--;	}	cp->prev = NULL;	cp->firstFree = cp->segment;	return cp;} voidCodeFreeBlock(Code *cd){	if(cd){		cd->prev = cdfreep;		cdfreep = cd;	}} Code *CodeStoreChar(Code *cd, char c){	if(cd->firstFree - cd->segment >= CSEGSIZE) {		Code *ncd = CodeGetBlock();		ncd->prev = cd;		cd = ncd;	}	*cd->firstFree++ = c;	return cd;} Code *CodeStoreString(Code *cd, char *s){	while(*s != '\0')		cd = CodeStoreChar(cd, *s++);	return cd;} Code *CodeAppend(Code *cd1, Code *cd2){	if(!cd2)		return cd1;	cd2->prev = CodeAppend(cd1, cd2->prev);	return cd2;} voidCodeWrite(Biobuf *b, Code *cd){	if(!cd)		return;	CodeWrite(b, cd->prev);	Bwrite(b, cd->segment, cd->firstFree-cd->segment);} Code *CodeMarkLine(Code *cd, int lineno){	char buf[100]; 	sprint(buf,"\n#line %d \"%s\"\n", lineno, inFileName);	return CodeStoreString(cd, buf);}