50     while (ps.p_stack[ps.tos] == ifhead && tk != elselit) {  in parse()
52 	ps.p_stack[ps.tos] = stmt;	/* apply the if(..) stmt ::= stmt  in parse()
64 	if (ps.p_stack[ps.tos] != decl) {	/* only put one declaration  in parse()
68 	    ps.p_stack[++ps.tos] = decl;  in parse()
75 		    if (ps.p_stack[i] == decl)  in parse()
84 	if (ps.p_stack[ps.tos] == elsehead && ps.else_if)	/* "else if ..." */  in parse()
88 	ps.p_stack[++ps.tos] = tk;  in parse()
96 	if (ps.p_stack[ps.tos] == stmt || ps.p_stack[ps.tos] == decl  in parse()
97 		|| ps.p_stack[ps.tos] == stmtl)  in parse()
109 		if (ps.p_stack[ps.tos] == swstmt && ps.case_indent >= 1)  in parse()
117 	ps.p_stack[++ps.tos] = lbrace;  in parse()
119 	ps.p_stack[++ps.tos] = stmt;  in parse()
125 	if (ps.p_stack[ps.tos] == dohead) {  in parse()
128 	    ps.p_stack[++ps.tos] = whilestmt;  in parse()
132 	    ps.p_stack[++ps.tos] = whilestmt;  in parse()
142 	if (ps.p_stack[ps.tos] != ifhead)  in parse()
149 	    ps.p_stack[ps.tos] = elsehead;  in parse()
157 	if (ps.p_stack[ps.tos - 1] == lbrace) {  in parse()
159 	    ps.p_stack[ps.tos] = stmt;  in parse()
166 	ps.p_stack[++ps.tos] = swstmt;  in parse()
181 	ps.p_stack[++ps.tos] = stmt;  in parse()
196 	printf("(%d %d)", ps.p_stack[i], ps.il[i]);  in parse()
251 	switch (ps.p_stack[ps.tos]) {  in reduce()
254 	    switch (ps.p_stack[ps.tos - 1]) {  in reduce()
259 		ps.p_stack[--ps.tos] = stmtl;  in reduce()
263 		ps.p_stack[--ps.tos] = dohead;  in reduce()
269 		ps.p_stack[--ps.tos] = ifhead;  in reduce()
272 			 ps.p_stack[i] != stmt  in reduce()
274 			 ps.p_stack[i] != stmtl  in reduce()
276 			 ps.p_stack[i] != lbrace  in reduce()
298 		ps.p_stack[--ps.tos] = stmt;  in reduce()
309 	    if (ps.p_stack[ps.tos - 1] == dohead) {  in reduce()
311 		ps.p_stack[--ps.tos] = stmt;  in reduce()