Landon Curt Noll
2ba12ecc3c
Under each yyyy/dir there is a file of the form '*.orig.c' containing the original source code, or as close as we can get to the original source code.
45 lines
1.4 KiB
C
45 lines
1.4 KiB
C
#define d define
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#d a include
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#a <stdio.h>
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#a <string.h>
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#a <ctype.h>
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#d p char*
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#d P ,(p)
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#d T(E) !strcmp(E,"()")
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#d U return
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#d W while
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#d X sbrk(199)
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#d z atof
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#d e isspace
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#d D A(_)
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#d E S(C(_))
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#d B(y) p y(_)p _;{
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#d G(y,V) B(y)p i;U sprintf(i=X,"%lf",z(E)V z(S(C(D)))),i;}
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p sbrk(),*S(),*j(),*O,*H;K,Y,M=14;double
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z();Q(_)p _;{int V=0;W(e(*_))_++;H=_;W(V|!(e
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(*H)|*H==')'||(*H=='('&&H-_)))V+=(*H=='(')-(*H==
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')'),H++;U H-_;}B(C)U _++,Y=Q(_),_=strncpy(X,_,Y),_[
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Y]=0,_;}B(A)_++,_+=Q(_);W(e(*_))_++;U O=X,*O='(',strcpy(
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O+1,_),O;}B(Z)U _;}B(c)U C(E);}B(q)U A(E);}B(t)p i=E;U H=S(C
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(D)),sprintf(O=X,T(H )?"(%s)":"(%s %s",i,H+1)
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,O;}B(F)U S(C(A(T(E)?D:_)));}L(i,s)p
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i,*s;{U isdigit(*i) ? z(i)!=z(s):strcmp(i,s);}
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B(b)U L(E,S(C(D)))?"()":"t";}B(R)U E;}B(o)U z(E)<z(S(C(D)))?
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"t":"()";}G(f,+)G(g,-)G(h,*)p r[4][2]={"function" P R,
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"quote"P C,"lambda"P Z,"defun"P j};B(j)U r[M][1]=D,*
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r[M++]=C(_);}p not[99][2]={"if"P F,"equal"P b,"<"
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P o,"+"P f,"-"P g,"*"P h,"car"P c,"cdr"P q,
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"cons"P t,"t","t"};B(S)int Li,s;p u;if(
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isdigit(*_)|T(_))U _;for(Y=M;Y--;)
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if(!strcmp(_,*r[Y]))U r[Y][1]
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;u=E,_=D;if(*u-'(')U(*((p(*)())u)
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)(_);s=Li=M;W(!T(_))r[M][1]=E,*r[M++]
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="",_=D;O=C(u);W(!T(O))*r[Li++]=C(O),O=A(O);U O=S
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(C(A(u))),M=s,O;}main(){H=O=X,Y=0;W(Y|!e(K=getchar()))K==
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EOF?exit(0):0,Y+=(K=='(')-(K==')'),*H++=K;*H=0,puts(S(O))
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,
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main();{printf("XLISP 4.0\n");}}
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