roff/troff/env.cpp

72   int last_line;		// Is it the last line of the paragraph?
156 // a line from .tl goes at the head of the queue
298     if (line == 0)
301     fprintf(stderr, "current line is\n");
302     line->debug_node_list();
305       line = line->add_char(ci, this, &width_total, &space_total, &gc_np);
307       line = line->add_discretionary_hyphen();
310   fprintf(stderr, "now after we have added character the line is\n");
311   line->debug_node_list();
318     else if (line && (line->state == 0)) {
319       line->state = construct_state(0);
320       line->push_state = get_diversion_state();
324   fprintf(stderr, "now we have possibly added the state the line is\n");
325   line->debug_node_list();
355     if (line == 0) {
365     n->next = line;
366     line = n;
367     construct_new_line_state(line);
376   if (line == 0)
378   line = line->add_discretionary_hyphen();
412   else if (line)
413     line = line->add_italic_correction(&width_total);
426     if (node_list_ends_sentence(line) == 1)
430   if (node_list_ends_sentence(line) == 1)
432   if (line != 0 && line->merge_space(x, sw, ssw)) {
455   node *p = current_tab ? tab_contents : line;
649   line(0),
741   line(0),
830   line = 0;
871   delete_node_list(line);
878   if (line == 0)
889   input_line_start = line == 0 ? -n : width_total - n;
901   if (line)
957   if (line)
977   for (node *n = current_tab ? tab_contents : line; n; n = n->next) {
1023   hunits n = line == 0 ? H0 : width_total;
1048   ssc_reg_contents = line ? line->subscript_correction().to_units() : 0;
1049   skw_reg_contents = line ? line->skew().to_units() : 0;
1050   line = reverse_node_list(line);
1054   for (node *tem = line; tem; tem = tem->next) {
1068   line = reverse_node_list(line);
1080   node *n = line;
1081   line = 0;
1354       warning(WARN_RANGE, "bad line length %1u", temp.to_units());
1598 	  warning(WARN_RANGE, "negative line number");
1610 	    warning(WARN_RANGE, "negative or zero line number multiple");
1703   while (line != 0 && line->discardable()) {
1704     width_total -= line->width();
1705     space_total -= line->nspaces();
1706     node *tem = line;
1707     line = line->next;
1725     to_be_output = line;
1728     line = 0;
1735     to_be_output = line;
1737     line = 0;
1742     to_be_output = line;
1744     line = 0;
1746   input_line_start = line == 0 ? H0 : width_total;
1831   assert(line == 0);
1833   line = new line_start_node;
1885   node *n = line;
1910 		   // Don't choose the hyphenated breakpoint if the line
1917 		   // Don't choose the hyphenated breakpoint if the line
1971       output_warning(WARN_BREAK, "can't break line");
1979   assert(line != 0);
1980   hyphenation_type prev_type = line->get_hyphenation_type();
1983     startp = &line;
1985     for (startp = &line->next; *startp != 0; startp = &(*startp)->next) {
2022       // this may not be right if we have extra space on this line
2077   while (line != 0
2080 	     // current line should not be empty.
2081 	     || (width_total - line->width()) > target_text_length)) {
2088     node **ndp = &line;
2100 	output_warning(WARN_BREAK, "cannot adjust line");
2122     for (tem = line; tem != 0; tem = tem->next)
2129       for (tem = line; tem != 0; tem = tem->next) {
2137       to_be_discarded = line;
2138       line = 0;
2140     // Do output_line() here so that line will be 0 iff the
2149     if (line != 0) {
2164 Unix troff behaves as follows:  if the last line is
2169 if the last line is
2189 If the last input line used \c and this line occurred in the end macro,
2334   if (line) {
2336     line = new space_node(H0, get_fill_color(), line);
2340   while (line != 0 && line->discardable()) {
2341     width_total -= line->width();
2342     space_total -= line->nspaces();
2343     node *tem = line;
2344     line = line->next;
2349   if (line != 0) {
2361     node *tem = line;
2362     line = 0;
2379   return !current_tab && line == 0 && pending_lines == 0;
2847   if (line == 0)
2853     line = make_tab_node(tab_amount, line);
2857     line = make_tab_node(tab_amount, line);
2878     tem->next = line;
2879     line = tab_contents;
2945     for (node *p = line; p; p = p->next)
2971     distribute_space(line, field_spaces, padding, 1);
2984 	    line = make_tab_node(tab_distance, line);
2992 	    tem->next = line;
2993 	    line = tab_contents;
3012     if (line == 0)
3014     line = new space_node(H0, get_fill_color(), line);
3710     if (!(c == '{' || c == '}')) {	// skip braces at line start