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comparison macro.c @ 199:1d2bad7151f9

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Add a -debuglog option to send an execution trace to a file. Intended to be used when debugging imake templates and other complex input, not for debugging tradcpp itself.
author David A. Holland
date Sun, 04 Sep 2016 17:14:42 -0400 (2016-09-04)
parents 255db24bc29b
children 3a25180d3a5c
comparison
equal deleted inserted replaced
198:4158b974e23f 199:1d2bad7151f9
874 static 874 static
875 void 875 void
876 expand_domacro(struct expstate *es, struct place *p) 876 expand_domacro(struct expstate *es, struct place *p)
877 { 877 {
878 struct macro *m; 878 struct macro *m;
879 const char *name, *val;
879 char *newbuf, *newbuf2; 880 char *newbuf, *newbuf2;
880 881
881 if (es->curmacro == NULL) { 882 if (es->curmacro == NULL) {
882 /* defined() */ 883 /* defined() */
883 if (stringarray_num(&es->args) != 1) { 884 if (stringarray_num(&es->args) != 1) {
884 complain(p, "Too many arguments for defined()"); 885 complain(p, "Too many arguments for defined()");
885 complain_fail(); 886 complain_fail();
886 expand_send(es, p, "0", 1); 887 expand_send(es, p, "0", 1);
887 return; 888 return;
888 } 889 }
889 m = macrotable_find(stringarray_get(&es->args, 0), false); 890 name = stringarray_get(&es->args, 0);
890 expand_send(es, p, (m != NULL) ? "1" : "0", 1); 891 m = macrotable_find(name, false);
892 val = (m != NULL) ? "1" : "0";
893 debuglog(p, "defined(%s): %s", name, val);
894 expand_send(es, p, val, 1);
891 expstate_destroyargs(es); 895 expstate_destroyargs(es);
892 return; 896 return;
893 } 897 }
894 898
895 m = es->curmacro; 899 m = es->curmacro;
896 assert(m->inuse == false); 900 assert(m->inuse == false);
897 m->inuse = true; 901 m->inuse = true;
898 902
903 debuglog(p, "Expanding macro %s", m->name);
899 newbuf = expand_substitute(p, es); 904 newbuf = expand_substitute(p, es);
905 debuglog(p, "Substituting for %s: %s", m->name, newbuf);
906
900 newbuf2 = macroexpand(p, newbuf, strlen(newbuf), false); 907 newbuf2 = macroexpand(p, newbuf, strlen(newbuf), false);
901 dostrfree(newbuf); 908 dostrfree(newbuf);
902 expstate_destroyargs(es); 909 expstate_destroyargs(es);
910 debuglog(p, "Complete expansion for %s: %s", m->name, newbuf2);
911
903 doexpand(es, p, newbuf2, strlen(newbuf2)); 912 doexpand(es, p, newbuf2, strlen(newbuf2));
904 dostrfree(newbuf2); 913 dostrfree(newbuf2);
905 914
906 m->inuse = false; 915 m->inuse = false;
907 } 916 }