-#ifdef _WINDOWS
- #define NOCOMM
- #define NOSOUND
- #define NODRIVERS
- #define STRICT
- #pragma warning(disable:4115) // kill rpcasync.h complaint
- #include <windows.h>
- #define MYLIBAPI __declspec(dllexport)
-#endif
-
-#include "texwin.h"
-
-#pragma warning(disable:4996)
-#pragma warning(disable:4131) // old style declarator
-#pragma warning(disable:4135) // conversion between different integral types
-#pragma warning(disable:4127) // conditional expression is constant
-
-#include <setjmp.h>
-
-#define EXTERN extern
-
-#include "texd.h"
-
-#pragma warning(disable:4244) /* 96/Jan/10 */
-
-/* *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** */
-
-/* math_fraction etc used to be in tex7.c */
-/* sec 1181 */
-void math_fraction (void)
-{
- small_number c;
- c = cur_chr;
- if (cur_list.aux_field.cint != 0)
- {
- if (c >= 3)
- {
- scan_delimiter(lig_trick, false);
- scan_delimiter(lig_trick, false);
- }
- if (c % 3 == 0)
- scan_dimen(false, false, false);
- print_err("Ambiguous; you need another { and }");
- help3("I'm ignoring this fraction specification, since I don't",
- "know whether a construction like `x \\over y \\over z'",
- "means `{x \\over y} \\over z' or `x \\over {y \\over z}'.");
- error();
- } else {
- cur_list.aux_field.cint = get_node(6);
- mem[cur_list.aux_field.cint].hh.b0 = 25;
- mem[cur_list.aux_field.cint].hh.b1 = 0;
- mem[cur_list.aux_field.cint + 2].hh.v.RH = 3;
- mem[cur_list.aux_field.cint + 2].hh.v.LH = mem[head].hh.v.RH;
- mem[cur_list.aux_field.cint + 3].hh = empty_field;
- mem[cur_list.aux_field.cint + 4].qqqq = null_delimiter;
- mem[cur_list.aux_field.cint + 5].qqqq = null_delimiter;
- mem[head].hh.v.RH = 0;
- tail = head;
- if (c >= 3) {
- scan_delimiter(cur_list.aux_field.cint + 4, false);
- scan_delimiter(cur_list.aux_field.cint + 5, false);
- }
- switch(c % 3)
- {
- case 0:
- {
- scan_dimen(false, false, false);
- mem[cur_list.aux_field.cint + 1].cint = cur_val;
- }
- break;
- case 1:
- mem[cur_list.aux_field.cint + 1].cint = 1073741824L; /* 2^30 */
- break;
- case 2:
- mem[cur_list.aux_field.cint + 1].cint = 0;
- break;
- }
- }
-}
-/* sec 1191 */
-void math_left_right (void)
-{
- small_number t;
- halfword p;
- t = cur_chr;
- if ((t == 31) && (cur_group != 16)) {
- if (cur_group == 15) {
- scan_delimiter(lig_trick, false);
- print_err("Extra ");
- print_esc("right");
- help1("I'm ignoring a \\right that had no matching \\left.");
- error();
- } else {
- off_save();
- }
- } else {
- p = new_noad();
- mem[p].hh.b0 = t;
- scan_delimiter(p + 1, false);
- if (t == 30) {
- push_math(16);
- mem[head].hh.v.RH = p;
- tail = p;
- } else {
- p = fin_mlist(p);
- unsave();
- {
- mem[tail].hh.v.RH = new_noad();
- tail = mem[tail].hh.v.RH;
- }
- mem[tail].hh.b0 = 23;
- mem[tail + 1].hh.v.RH = 3;
- mem[tail + 1].hh.v.LH = p;
- }
- }
-}
-/* sec 1194 */
-void after_math (void)
-{
- bool l;
- bool danger;
- integer m;
- halfword p;
- halfword a;
- halfword b;
- scaled w;
- scaled z;
- scaled e;
- scaled q;
- scaled d;
- scaled s;
- small_number g1, g2;
- halfword r;
- halfword t;
- danger = false;
- if ((font_params[eqtb[(hash_size + 1837)].hh.v.RH]< 22)||
- (font_params[eqtb[(hash_size + 1853)].hh.v.RH]< 22)||
- (font_params[eqtb[(hash_size + 1869)].hh.v.RH]< 22))
- {
- print_err("Math formula deleted: Insufficient symbol fonts");
- help3("Sorry, but I can't typeset math unless \\textfont Sorry, but I can't typeset math unless \\textfont 2",
- "and \\scriptfont 2 and \\scriptscriptfont 2 have and \\scriptfont 2 and \\scriptscriptfont 2 have all",
- "the \\fontdimen values needed in math symbol the \\fontdimen values needed in math symbol fonts..");
- error();
- flush_math();
- danger = true;
- }
- else if ((font_params[eqtb[(hash_size + 1838)].hh.v.RH]< 13)||
- (font_params[eqtb[(hash_size + 1854)].hh.v.RH]< 13)||
- (font_params[eqtb[(hash_size + 1870)].hh.v.RH]< 13))
- {
- print_err("Math formula deleted: Insufficient extension fonts");
- help3("Sorry, but I can't typeset math unless \\textfont 3",
- "and \\scriptfont 3 and \\scriptscriptfont 3 have all",
- "the \\fontdimen values needed in math extension fonts.");
- error();
- flush_math();
- danger = true;
- }
- m = mode;
- l = false;
- p = fin_mlist(0);
- if (mode == - (integer) m)
- {
- {
- get_x_token();
- if (cur_cmd != 3)
- {
- print_err("Display math should end with $$");
- help2("The `$' that I just saw supposedly matches a previous `$$'.",
- "So I shall assume that you typed `$$' both times.");
- back_error();
- }
- }
- cur_mlist = p;
- cur_style = 2;
- mlist_penalties = false;
- mlist_to_hlist();
- a = hpack(mem[temp_head].hh.v.RH, 0, 1);
- unsave();
- decr(save_ptr);
- if (save_stack[save_ptr + 0].cint == 1)
- l = true;
- danger = false;
- if ((font_params[eqtb[(hash_size + 1837)].hh.v.RH]< 22)||
- (font_params[eqtb[(hash_size + 1853)].hh.v.RH]< 22)||
- (font_params[eqtb[(hash_size + 1869)].hh.v.RH]< 22))
- {
- print_err("Math formula deleted: Insufficient symbol fonts");
- help3("Sorry, but I can't typeset math unless \\textfont 2",
- "and \\scriptfont 2 and \\scriptscriptfont 2 have all",
- "the \\fontdimen values needed in math symbol fonts.");
- error();
- flush_math();
- danger = true;
- }
- else if ((font_params[eqtb[(hash_size + 1838)].hh.v.RH]< 13)||
- (font_params[eqtb[(hash_size + 1854)].hh.v.RH]< 13)||
- (font_params[eqtb[(hash_size + 1870)].hh.v.RH]< 13))
- {
- print_err("Math formula deleted: Insufficient extension fonts");
- help3("Sorry, but I can't typeset math unless \\textfont 3",
- "and \\scriptfont 3 and \\scriptscriptfont 3 have all",
- "the \\fontdimen values needed in math extension fonts.");
- error();
- flush_math();
- danger = true;
- }
- m = mode;
- p = fin_mlist(0);
- }
- else a = 0;
- if (m < 0)
- {
- {
- mem[tail].hh.v.RH = new_math(math_surround, 0);
- tail = mem[tail].hh.v.RH;
- }
- cur_mlist = p;
- cur_style = 2;
- mlist_penalties =(mode > 0);
- mlist_to_hlist();
- mem[tail].hh.v.RH = mem[temp_head].hh.v.RH;
- while(mem[tail].hh.v.RH != 0)tail =
- mem[tail].hh.v.RH;
- {
- mem[tail].hh.v.RH = new_math(math_surround, 1);
- tail = mem[tail].hh.v.RH;
- }
- space_factor = 1000;
- unsave();
- }
- else {
-
- if (a == 0)
- {
- get_x_token();
- if (cur_cmd != 3) {
- print_err("Display math should end with $$");
- help2("The `$' that I just saw supposedly matches a previous `$$'.",
- "So I shall assume that you typed `$$' both times.");
- back_error();
- }
- }
- cur_mlist = p;
- cur_style = 0;
- mlist_penalties = false;
- mlist_to_hlist();
- p = mem[temp_head].hh.v.RH;
- adjust_tail = adjust_head;
- b = hpack(p, 0, 1);
- p = mem[b + 5].hh.v.RH;
- t = adjust_tail;
- adjust_tail = 0;
- w = mem[b + 1].cint;
- z = display_width;
- s = display_indent;
- if ((a == 0)|| danger)
- {
- e = 0;
- q = 0;
- }
- else {
-
- e = mem[a + 1].cint;
- q = e + font_info[6 + param_base[eqtb[(hash_size + 1837)].hh.v.RH]].cint;
- }
- if (w + q > z)
- {
- if ((e != 0)&&((w - total_shrink[0]+ q <= z)||(total_shrink
- [1]!= 0)||(total_shrink[2]!= 0)||(total_shrink[3]!= 0)
- ))
- {
- free_node(b, 7);
- b = hpack(p, z - q, 0);
- }
- else {
-
- e = 0;
- if (w > z)
- {
- free_node(b, 7);
- b = hpack(p, z, 0);
- }
- }
- w = mem[b + 1].cint;
- }
- d = half(z - w);
- if ((e > 0)&&(d < 2 * e))
- {
- d = half(z - w - e);
- if (p != 0)
- if (!(p >= hi_mem_min))
- if (mem[p].hh.b0 == 10)
- d = 0;
- }
- {
- mem[tail].hh.v.RH = new_penalty(pre_display_penalty);
- tail = mem[tail].hh.v.RH;
- }
- if ((d + s <= pre_display_size)|| l)
- {
- g1 = 3;
- g2 = 4;
- }
- else {
-
- g1 = 5;
- g2 = 6;
- }
- if (l &&(e == 0))
- {
- mem[a + 4].cint = s;
- append_to_vlist(a);
- {
- mem[tail].hh.v.RH = new_penalty(10000);
- tail = mem[tail].hh.v.RH;
- }
- }
- else {
-
- mem[tail].hh.v.RH = new_param_glue(g1);
- tail = mem[tail].hh.v.RH;
- }
- if (e != 0)
- {
- r = new_kern(z - w - e - d);
- if (l)
- {
- mem[a].hh.v.RH = r;
- mem[r].hh.v.RH = b;
- b = a;
- d = 0;
- }
- else {
-
- mem[b].hh.v.RH = r;
- mem[r].hh.v.RH = a;
- }
- b = hpack(b, 0, 1);
- }
- mem[b + 4].cint = s + d;
- append_to_vlist(b);
- if ((a != 0)&&(e == 0)&& ! l)
- {
- {
- mem[tail].hh.v.RH = new_penalty(10000);
- tail = mem[tail].hh.v.RH;
- }
- mem[a + 4].cint = s + z - mem[a + 1].cint;
- append_to_vlist(a);
- g2 = 0;
- }
- if (t != adjust_head)
- {
- mem[tail].hh.v.RH = mem[adjust_head].hh.v.RH;
- tail = t;
- }
- {
- mem[tail].hh.v.RH = new_penalty(post_display_penalty);
- tail = mem[tail].hh.v.RH;
- }
- if (g2 > 0)
- {
- mem[tail].hh.v.RH = new_param_glue(g2);
- tail = mem[tail].hh.v.RH;
- }
- resume_after_display();
- }
-}
-/* sec 1200 */
-void resume_after_display (void)
-{
- if (cur_group != 15) {
- confusion("display");
- return; // abort_flag set
- }
- unsave();
- prev_graf = prev_graf + 3;
- push_nest();
- mode = 102;
- space_factor = 1000;
-/* *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** */
-/* was clang = 0; etc in 3.141 new stuff follows */
- if (language <= 0)
- cur_lang = 0;
- else if (language > 255)
- cur_lang = 0;
- else cur_lang = language;
- clang = cur_lang;
- prev_graf =(norm_min(left_hyphen_min) * 64 +
- norm_min(right_hyphen_min)) * 65536L + cur_lang;
-/* eqtb ??? hash_size ? hash_size + hash_extra ? norm_min etc */
-/* *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** */
- {
- get_x_token();
- if (cur_cmd != 10) back_input();
- }
- if (nest_ptr == 1) {
- build_page();
- }
-}
-/* sec 1215 */
-void get_r_token (void)
-{
-lab20:
- do {
- get_token();
- } while (!(cur_tok != 2592));
-/* if ((cur_cs == 0)||(cur_cs > (hash_size + 514))) */ /* 95/Jan/10 */
- if ((cur_cs == 0) || (cur_cs > (hash_size + hash_extra + 514))) {
- print_err("Missing control sequence inserted");
- help5("Please don't say `\\def cs{...}', say `\\def\\cs{...}'.",
- "I've inserted an inaccessible control sequence so that your",
- "definition will be completed without mixing me up too badly.",
- "You can recover graciously from this error, if you're",
- "careful; see exercise 27.2 in The TeXbook.");
- if (cur_cs == 0)
- back_input();
-/* cur_tok = (hash_size + 4609); */
-/* cur_tok = (hash_size + 4095 + 514); */
- cur_tok = (hash_size + hash_extra + 4095 + 514); /* 96/Jan/10 */
- ins_error();
- goto lab20;
- }
-}
-/* sec 1229 */
-void trap_zero_glue (void)
-{
- if ((mem[cur_val + 1].cint == 0) && (mem[cur_val + 2].cint == 0) &&
- (mem[cur_val + 3].cint == 0)) {
- incr(mem[0].hh.v.RH); /* mem[mem_bot]? */ /* mem[null]? */
- delete_glue_ref(cur_val);
- cur_val = 0;
- }
-}
-/* sec 1236 */
-void do_register_command_ (small_number a)
-{/* 40 10 */
- halfword l, q, r, s;
- char p;
- q = cur_cmd;
- {
- if (q != 89)
- {
- get_x_token();
- if ((cur_cmd >= 73)&&(cur_cmd <= 76))
- {
- l = cur_chr;
- p = cur_cmd - 73;
- goto lab40;
- }
- if (cur_cmd != 89)
- {
- print_err("You can't use `");
- print_cmd_chr(cur_cmd, cur_chr);
- print_string("' after ");
- print_cmd_chr(q, 0);
- help1("I'm forgetting what you said and not changing anything.");
- error();
- return;
- }
- }
- p = cur_chr;
- scan_eight_bit_int();
- switch(p)
- {case 0 :
- l = cur_val + (hash_size + 3218);
- break;
- case 1 :
- l = cur_val + (hash_size + 3751);
- break;
- case 2 :
- l = cur_val + (hash_size + 800);
- break;
- case 3 :
- l = cur_val + (hash_size + 1056);
- break;
- }
- }
- lab40:;
- if (q == 89)
- scan_optional_equals();
- else if (scan_keyword("by"));
- arith_error = false;
- if (q < 91)
- if (p < 2)
- {
- if (p == 0){
- scan_int();
- }
- else {
- scan_dimen(false, false, false);
- }
- if (q == 90)
- cur_val = cur_val + eqtb[l].cint;
- }
- else {
-
- scan_glue(p);
- if (q == 90){
- q = new_spec(cur_val);
- r = eqtb[l].hh.v.RH;
- delete_glue_ref(cur_val);
- mem[q + 1].cint = mem[q + 1].cint + mem[r + 1].cint;
- if (mem[q + 2].cint == 0)
- mem[q].hh.b0 = 0;
- if (mem[q].hh.b0 == mem[r].hh.b0)
- mem[q + 2].cint = mem[q + 2].cint + mem[r + 2].cint;
- else if ((mem[q].hh.b0 < mem[r].hh.b0)&&(mem[r + 2]
- .cint != 0))
- {
- mem[q + 2].cint = mem[r + 2].cint;
- mem[q].hh.b0 = mem[r].hh.b0;
- }
- if (mem[q + 3].cint == 0)
- mem[q].hh.b1 = 0;
- if (mem[q].hh.b1 == mem[r].hh.b1)
- mem[q + 3].cint = mem[q + 3].cint + mem[r + 3].cint;
- else if ((mem[q].hh.b1 < mem[r].hh.b1)&&(mem[r + 3]
- .cint != 0))
- {
- mem[q + 3].cint = mem[r + 3].cint;
- mem[q].hh.b1 = mem[r].hh.b1;
- }
- cur_val = q;
- }
- }
- else {
- scan_int();
- if (p < 2)
- if (q == 91)
- if (p == 0)
- cur_val = mult_and_add(eqtb[l].cint, cur_val, 0, 2147483647L);
-/* 2^31 - 1 */
- else cur_val = mult_and_add(eqtb[l].cint, cur_val, 0, 1073741823L);
-/* 2^30 - 1 */
- else cur_val = x_over_n(eqtb[l].cint, cur_val);
- else {
- s = eqtb[l].hh.v.RH; /* l may be used ... */
- r = new_spec(s);
- if (q == 91)
- {
- mem[r + 1].cint = mult_and_add(mem[s + 1].cint, cur_val, 0,
- 1073741823L); /* 2^30 - 1 */
- mem[r + 2].cint = mult_and_add(mem[s + 2].cint, cur_val, 0,
- 1073741823L); /* 2^30 - 1 */
- mem[r + 3].cint = mult_and_add(mem[s + 3].cint, cur_val, 0,
- 1073741823L); /* 2^30 - 1 */
- }
- else {
- mem[r + 1].cint = x_over_n(mem[s + 1].cint, cur_val);
- mem[r + 2].cint = x_over_n(mem[s + 2].cint, cur_val);
- mem[r + 3].cint = x_over_n(mem[s + 3].cint, cur_val);
- }
- cur_val = r;
- }
- }
- if (arith_error){
- print_err("Arithmetic overflow");
- help2("I can't carry out that multiplication or division,",
- "since the result is out of range.");
-/* 423 in tex82.bug */
- if (p >= 2) delete_glue_ref(cur_val);
- error();
- return;
- }
- if (p < 2)
- if ((a >= 4))
- geq_word_define(l, cur_val);
- else eq_word_define(l, cur_val);
- else {
-
- trap_zero_glue();
- if ((a >= 4))
- geq_define(l, 117, cur_val);
- else eq_define(l, 117, cur_val);
- }
-}
-/* called only from itex.c */
-/* sec 1243 */
-void alter_aux (void)
-{
- halfword c;
- if (cur_chr != abs(mode)) {
- report_illegal_case();
- }
- else {
- c = cur_chr;
- scan_optional_equals();
- if (c == 1)
- {
- scan_dimen(false, false, false);
- cur_list.aux_field.cint = cur_val;
- }
- else {
- scan_int();
- if ((cur_val <= 0)||(cur_val > 32767))
- {
- print_err("Bad space factor");
- help1("I allow only values in the range 1..32767 here.");
- int_error(cur_val);
- }
- else space_factor = cur_val;
- }
- }
-}
-/* sec 1244 */
-void alter_prev_graf (void)
-{
- integer p;
- nest[nest_ptr]= cur_list;
- p = nest_ptr;
- while(abs(nest[p].mode_field)!= 1)decr(p);
- scan_optional_equals();
- scan_int();
- if (cur_val < 0)
- {
- print_err("Bad ");
- print_esc("prevgraf");
- help1("I allow only nonnegative values here.");
- int_error(cur_val);
- }
- else {
-
- nest[p].pg_field = cur_val;
- cur_list = nest[nest_ptr];
- }
-}
-/* sec 1245 */
-void alter_page_so_far (void)
-{
- char c;
- c = cur_chr;
- scan_optional_equals();
- scan_dimen(false, false, false);
- page_so_far[c]= cur_val;
-}
-/* sec 1246 */
-void alter_integer (void)
-{
- char c;
- c = cur_chr;
- scan_optional_equals();
- scan_int();
- if (c == 0)dead_cycles = cur_val;
- else insert_penalties = cur_val;
-}
-/* sec 1247 */
-void alter_box_dimen (void)
-{
- small_number c;
- eight_bits b;
- c = cur_chr;
- scan_eight_bit_int();
- b = cur_val;
- scan_optional_equals();
- scan_dimen(false, false, false);
- if (eqtb[(hash_size + 1578) + b].hh.v.RH != 0)
- mem[eqtb[(hash_size + 1578) + b].hh.v.RH + c].cint = cur_val;
-}
-/* sec 1257 */
-void new_font_(small_number a)
-{/* 50 */
- halfword u;
- scaled s;
- internal_font_number f;
- str_number t;
- char old_setting;
- str_number flushablestring;
- if (job_name == 0) open_log_file();
- get_r_token();
- u = cur_cs;
- if (u >= hash_base) /* if u >= hash_base then t <- text(u); p.1257 */
- t = hash[u].v.RH;
- else if (u >= single_base) /* if u >= single_base then ... */
-/* if u=null_cs then t:="FONT"@+else t:=u-single_base */
- if (u == null_cs)
- t = 1213; /* FONT */
- else t = u - single_base; /* else t <- u - single_base */
- else {
- old_setting = selector;
- selector = 21;
- print_string("FONT");
- print(u - active_base);
- selector = old_setting;
- {
-/* *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** */
-#ifdef ALLOCATESTRING
- if (pool_ptr + 1 > current_pool_size)
- str_pool = realloc_str_pool (increment_pool_size);
- if (pool_ptr + 1 > current_pool_size) { /* 94/Jan/24 */
- overflow("pool size", current_pool_size - init_pool_ptr); /* 97/Mar/9 */
- return; // abort_flag set
- }
-#else
-/* *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** */
- if (pool_ptr + 1 > pool_size) {
- overflow("pool size", pool_size - init_pool_ptr); /* pool size */
- return; // abort_flag set
- }
-#endif
- }
- t = make_string();
- }
- if ((a >= 4)) geq_define(u, 87, 0);
- else eq_define(u, 87, 0);
- scan_optional_equals();
- scan_file_name();
-
-/* paragraph 1258 */
- name_in_progress = true;
- if (scan_keyword("at")) /* at */
- {
- scan_dimen(false, false, false);
- s = cur_val;
- if ((s <= 0)||(s >= 134217728L)) /* 2^27 */
- {
- print_err("Improper `at' size(");
- print_scaled(s);
- print_string("pt), replaced by 10pt");
- help2("I can only handle fonts at positive sizes that are",
- "less than 2048pt, so I've changed what you said to 10pt.");
- error();
- s = 10 * 65536L; /* 10pt */
- }
- }
- else if (scan_keyword("scaled")) /* scaled */
- {
- scan_int();
- s = - (integer) cur_val;
- if ((cur_val <= 0)||(cur_val > 32768L)) {
- print_err("Illegal magnification has been changed to 1000");
- help1("The magnification ratio must be between 1 and 32768.");
- int_error(cur_val);
- s = -1000;
- }
- }
- else s = -1000;
- name_in_progress = false;
-
- flushablestring = str_ptr - 1;
- if (trace_flag) { /* debugging stuff only 98/Oct/5 */
- int i, k1, k2, l1, l2;
- char *sch=log_line;
- k1 = str_start[cur_area];
- k2 = str_start[cur_name];
- l1 = length(cur_area);
- l2 = length(cur_name);
- show_char('\n');
- show_line("FONT ", 0);
- for (i = 0; i < l1; i++) {
- *sch++ = str_pool[i+k1];
- }
- for (i = 0; i < l2; i++) {
- *sch++ = str_pool[i+k2];
- }
- *sch++ = ' ';
- *sch++ = '\0';
- show_line(log_line, 0);
- }
-/* if (ignore_frozen) goto lab69; */ /* 98/Oct/5 */
-
-/* paragraph 1260 for f <- fontbase+1 to font_ptr do */
- {
- register integer for_end;
- f = 1;
- for_end = font_ptr;
- if (f <= for_end)
- do
-/* if str_eq_str(font_name[f],cur_name) ^ str_eq_str(font_area[f],cur_area) */
- if (str_eq_str(font_name[f], cur_name)&&
- str_eq_str(font_area[f], cur_area)) {
- if (cur_name == flushablestring) {
- flush_string();
- cur_name = font_name[f];
- }
-/* if (ignore_frozen) continue; */ /* 98/Oct/5 */
- if (s > 0) { /* if pt size was specified */
- if (s == font_size[f]){
-/* if (ignore_frozen == 0) */
- if (ignore_frozen == 0 || f > frozenfontptr) { /* 99/Mar/26 */
- if (trace_flag) {
- sprintf(log_line, "SKIPPING %ld ", s);
- show_line(log_line, 0);
- }
- goto lab50;
- }
- }
- }
-/* else if font_size[f] = xn_over_d(font_dsize[f],-s,1000) then goto common_ending */
- else if (font_size[f]== xn_over_d(font_dsize[f],
- - (integer) s, 1000)) { /* if using design size */
-/* if (ignore_frozen == 0) */
- if (ignore_frozen == 0 || f > frozenfontptr) { /* 99/Mar/26 */
- if (trace_flag) {
- sprintf(log_line, "SKIPPING %ld ", s);
- show_line(log_line, 0);
- }
- goto lab50;
- }
- }
- }
- while(f++ < for_end);
- }
-
-/* lab69: */ /* 98/Oct/5 */
-/* end of paragraph 1257 */
- if (trace_flag) show_line("READING ", 0); /* debugging only */
- f = read_font_info(u, cur_name, cur_area, s);
-
-/* common_ending: equiv[u] <- f; */ /* use existing font info */
- lab50:
- if (trace_flag) {
- sprintf(log_line, "NEW FONT %d ", f); /* debugging only */
- show_line(log_line, 0);
- }
- eqtb[u].hh.v.RH = f;
-/* eqtb[(hash_size + 524) + f]= eqtb[u];*/ /* eqtb[frozen_null+font+f] */
- eqtb[(hash_size + hash_extra + 524) + f]= eqtb[u]; /* 96/Jan/10 */
-#ifdef SHORTHASH /* debugging only 1996/Jan/20 */
- if (t > 65535L) {
- sprintf(log_line, "ERROR: %s too large %d\n", "hash_used", t);
- show_line(log_line, 1);
- }
-#endif
-/* hash[(hash_size + 524) + f].v.RH = t; */
- hash[(hash_size + hash_extra + 524) + f].v.RH = t; /* 96/Jan/10 */
-}
-/* sec 1265 */
-void new_interaction (void)
-{
- print_ln();
- interaction = cur_chr;
- if (interaction == batch_mode) selector = 16;
- else selector = 17;
- if (log_opened) selector = selector + 2;
-}
-/* sec 1270 */
-void do_assignments (void)
-{/* 10 */
- while(true){
- do {
- get_x_token();
- } while(!((cur_cmd != 10)&&(cur_cmd != 0)));
- if (cur_cmd <= 70)
- return;
- set_box_allowed = false;
- prefixed_command();
- set_box_allowed = true;
- }
-}
-/* sec 1275 */
-void open_or_close_in (void)
-{
- char c;
- char n;
- c = cur_chr;
- scan_four_bit_int();
- n = cur_val;
- if (read_open[n]!= 2)
- {
- (void) a_close(read_file[n]);
- read_open[n]= 2;
- }
- if (c != 0)
- {
- scan_optional_equals();
- scan_file_name();
- pack_file_name(cur_name, cur_area, cur_ext);
-/* *** some changes in following in 3.14159 *** */
-/* if current extension is *not* empty, try to open using name as is */
-/* string 335 is "" the empty string */
- if ((cur_ext != 335) && a_open_in(read_file[n], TEXINPUTPATH))
- read_open[n]= 1;
-/* we get here if extension is "", or file with extension failed to open */
-/* if current extension is not `tex,' and `tex' is not irrelevant, try it */
-/* string 785 is .tex */
- else if ((cur_ext != 785)&&(name_length + 5 < PATHMAX)&&
-/* *** some changes in above file name handling *** */
-/* (! extensionirrelevantp(name_of_file, "tex"))) */
- (! extensionirrelevantp(name_of_file, name_length, "tex")))
- {
- name_of_file[name_length + 1]= 46; /* .tex */
- name_of_file[name_length + 2]= 116;
- name_of_file[name_length + 3]= 101;
- name_of_file[name_length + 4]= 120;
- name_of_file[name_length + 5]= 32;
- name_length = name_length + 4;
- if (a_open_in(read_file[n], TEXINPUTPATH))
- read_open[n]= 1;
- else {
-/* more changes here in 3.14159 *** */
- name_length = name_length - 4; /* remove ".tex" again */
- name_of_file[name_length + 1]= 32; /* ' ' */
-/* string 335 is "" the empty string */
- if ((cur_ext == 335)&& a_open_in(read_file[n], TEXINPUTPATH))
- read_open[n]= 1;
- else if (maketextex () && a_open_in(read_file[n], TEXINPUTPATH))
- read_open[n]= 1;
- }
- }
- }
-}
-/* sec 1279 */
-void issue_message (void)
-{
- char old_setting;
- char c;
- str_number s;
- c = cur_chr;
- mem[lig_trick].hh.v.RH = scan_toks(false, true);
- old_setting = selector;
- selector = 21;
- token_show(def_ref);
- selector = old_setting;
- flush_list(def_ref);
- {
-/* *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** */
-#ifdef ALLOCATESTRING
- if (pool_ptr + 1 > current_pool_size)
- str_pool = realloc_str_pool (increment_pool_size);
- if (pool_ptr + 1 > current_pool_size){ /* in case it failed 94/Jan/24 */
- overflow("pool size", current_pool_size - init_pool_ptr); /* 97/Mar/7 */
- return; // abort_flag set
- }
-#else
-/* *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** */
- if (pool_ptr + 1 > pool_size){
- overflow("pool size", pool_size - init_pool_ptr); /* pool size */
- return; // abort_flag set
- }
-#endif
- }
- s = make_string();
- if (c == 0)
- {
- if (term_offset + length(s) > max_print_line - 2)
- print_ln();
- else if ((term_offset > 0)||(file_offset > 0))
- print_char(' ');
- slow_print(s);
-#ifndef f_WINDOWS
- fflush(stdout);
-#endif
- } else {
- print_err("");
- slow_print(s);
- if (err_help != 0)
- use_err_help = true;
- else if (long_help_seen)
- help1("(That was another \\errmessage.)");
- else {
- if (interaction < 3)
- long_help_seen = true;
- help4("This error message was generated by an \\errmessage",
- "command, so I can't give any explicit help.",
- "Pretend that you're Hercule Poirot: Examine all clues,",
- "and deduce the truth by order and method.");
- }
- error();
- use_err_help = false;
- }
- flush_string();
-}
-/* sec 1288 */
-void shift_case (void)
-{
- halfword b;
- halfword p;
- halfword t;
- eight_bits c;
- b = cur_chr;
- p = scan_toks(false, false);
- p = mem[def_ref].hh.v.RH;
- while (p != 0) { /* while p <> null ... p.1288 */
- t = info(p); /* t <- info(p) p.1289 */
-/* if (t < 4352) */
- if (t < 4095 + single_base) /* 4095 + 257 = cs_tokenflag + single_base */
- {
- c = t % 256;
- if (eqtb[b + c].hh.v.RH != 0)
- mem[p].hh.v.LH = t - c + eqtb[b + c].hh.v.RH;
- }
- p = link(p);
- }
- begin_token_list(mem[def_ref].hh.v.RH, 3);
- {
- mem[def_ref].hh.v.RH = avail;
- avail = def_ref;
- ;
-#ifdef STAT
- decr(dyn_used);
-#endif /* STAT */
- }
-}
-/* sec 1293 */
-void show_whatever (void)
-{
- halfword p;
- switch(cur_chr)
- {
- case 3:
- {
- begin_diagnostic();
- show_activities();
- }
- break;
- case 1:
- {
- scan_eight_bit_int();
- begin_diagnostic();
- print_nl("> \box");
- print_int(cur_val);
- print_char('=');
- if (eqtb[(hash_size + 1578) + cur_val].hh.v.RH == 0)
- print_string("void");
- else
- show_box(eqtb[(hash_size + 1578) + cur_val].hh.v.RH);
- }
- break;
- case 0:
- {
- get_token();
- if (interaction == error_stop_mode)
- ;
- print_nl("> ");
- if (cur_cs != 0)
- {
- sprint_cs(cur_cs);
- print_char('=');
- }
- print_meaning();
- goto lab50;
- }
- break;
- default:
- {
- p = the_toks();
- if (interaction == error_stop_mode)
- ;
- print_nl(" > ");
- token_show(temp_head);
- flush_list(mem[temp_head].hh.v.RH);
- goto lab50;
- }
- break;
- }
- end_diagnostic(true);
- print_err("OK");
- if (selector == 19)
- if (tracing_online <= 0)
- {
- selector = 17;
- print_string(" (see the transcript file)");
- selector = 19;
- }
-lab50:
- if (interaction < 3) {
- help_ptr = 0;
- decr(error_count);
- } else if (tracing_online > 0) {
- help3("This isn't an error message; I'm just \\showing something.",
- "Type `I\\show...' to show more (e.g., \\show\\cs,",
- "\\showthe\\count10, \\showbox255, \\showlists).");
- } else {
- help5("This isn't an error message; I'm just \\showing something.",
- "Type `I\\show...' to show more (e.g., \\show\\cs,",
- "\\showthe\\count10, \\showbox255, \\showlists).",
- "And type `I\\tracingonline=1\\show...' to show boxes and",
- "lists on your terminal as well as in the transcript file.");
- }
- error();
-}
-/* sec 1339 */
-void new_whatsit_(small_number s, small_number w)
-{
- halfword p;
- p = get_node(w);
- mem[p].hh.b0 = 8;
- mem[p].hh.b1 = s;
- mem[tail].hh.v.RH = p;
- tail = p;
-}
-/* sec 1350 */
-void new_write_whatsit_(small_number w)
-{
- new_whatsit(cur_chr, w);
- if (w != 2) {
- scan_four_bit_int();
- } else {
- scan_int();
- if (cur_val < 0)
- cur_val = 17;
- else if (cur_val > 15)
- cur_val = 16;
- }
- mem[tail + 1].hh.v.LH = cur_val;
-}
-/* sec 1348 */
-void do_extension (void)
-{
-/* integer i, j, k; */
- integer k;
-/* halfword p, q, r; */
- halfword p;
- switch(cur_chr)
- {case 0 :
- {
- new_write_whatsit(3);
- scan_optional_equals();
- scan_file_name();
- mem[tail + 1].hh.v.RH = cur_name;
- mem[tail + 2].hh.v.LH = cur_area;
- mem[tail + 2].hh.v.RH = cur_ext;
- }
- break;
- case 1 :
- {
- k = cur_cs;
- new_write_whatsit(2);
- cur_cs = k;
- p = scan_toks(false, false);
- mem[tail + 1].hh.v.RH = def_ref;
- }
- break;
- case 2 :
- {
- new_write_whatsit(2);
- mem[tail + 1].hh.v.RH = 0;
- }
- break;
- case 3 :
- {
- new_whatsit(3, 2);
- mem[tail + 1].hh.v.LH = 0;
- p = scan_toks(false, true);
- mem[tail + 1].hh.v.RH = def_ref;
- }
- break;
- case 4 :
- {
- get_x_token();
- if ((cur_cmd == 59)&&(cur_chr <= 2))
- {
- p = tail;
- do_extension();
- out_what(tail);
- flush_node_list(tail);
- tail = p;
- mem[p].hh.v.RH = 0;
- }
- else back_input();
- }
- break;
- case 5 :
- if (abs(mode)!= 102){
- report_illegal_case();
- }
- else {
- new_whatsit(4, 2);
- scan_int();
- if (cur_val <= 0) clang = 0;
- else if (cur_val > 255)
- clang = 0;
- else clang = cur_val;
- mem[tail + 1].hh.v.RH = clang;
- mem[tail + 1].hh.b0 = norm_min(left_hyphen_min);
- mem[tail + 1].hh.b1 = norm_min(right_hyphen_min);
- }
- break;
- default:
- {
- confusion("display");
- return; // abort_flag set
- }
- break;
- }
-}
-/* sec 1376 */
-void fix_language (void)
-{
-/* ASCII_code l; */
- int l; /* 95/Jan/7 */
- if (language <= 0)
- l = 0;
- else if (language > 255)
- l = 0;
- else l = language;
- if (l != clang) {
- new_whatsit(4, 2);
- mem[tail + 1].hh.v.RH = l;
- clang = l;
- mem[tail + 1].hh.b0 = norm_min(left_hyphen_min);
- mem[tail + 1].hh.b1 = norm_min(right_hyphen_min);
- }
-}
-/* sec 1068 */
-void handle_right_brace (void)
-{
- halfword p, q;
- scaled d;
- integer f;
-
- switch(cur_group)
- {case 1 :
- unsave();
- break;
- case 0 :
- {
- print_err("Too many }'s");
- help2("You've closed more groups than you opened.",
- "Such booboos are generally harmless, so keep going.");
- error();
- }
- break;
- case 14 :
- case 15 :
- case 16 :
- extra_right_brace();
- break;
- case 2 :
- package(0);
- break;
- case 3 :
- {
- adjust_tail = adjust_head;
- package(0);
- }
- break;
- case 4 :
- {
- end_graf();
- package(0);
- }
- break;
- case 5 :
- {
- end_graf();
- package(4);
- }
- break;
- case 11 :
- {
- end_graf();
- q = eqtb[(hash_size + 792)].hh.v.RH;
- incr(mem[q].hh.v.RH);
- d = split_max_depth;
- f = floating_penalty;
- unsave();
- decr(save_ptr);
- p = vpackage(mem[head].hh.v.RH, 0, 1, 1073741823L); /* 2^30 - 1 */
- pop_nest();
- if (save_stack[save_ptr + 0].cint < 255) {
- {
- mem[tail].hh.v.RH = get_node(5);
- tail = mem[tail].hh.v.RH;
- }
- mem[tail].hh.b0 = 3;
- mem[tail].hh.b1 = save_stack[save_ptr + 0].cint;
- mem[tail + 3].cint = mem[p + 3].cint + mem[p + 2].cint;
- mem[tail + 4].hh.v.LH = mem[p + 5].hh.v.RH;
- mem[tail + 4].hh.v.RH = q;
- mem[tail + 2].cint = d;
- mem[tail + 1].cint = f;
- } else {
- {
- mem[tail].hh.v.RH = get_node(2);
- tail = mem[tail].hh.v.RH;
- }
- mem[tail].hh.b0 = 5;
- mem[tail].hh.b1 = 0;
- mem[tail + 1].cint = mem[p + 5].hh.v.RH;
- delete_glue_ref(q);
- }
- free_node(p, 7);
- if (nest_ptr == 0) {
- build_page();
- }
- }
- break;
- case 8 :
- {
- if ((cur_input.loc_field != 0)||((cur_input.index_field != 6)&&(
- cur_input.index_field != 3)))
- {
- print_err("Unbalanced output routine");
- help2("Your sneaky output routine has problematic {'s and/or }'s.",
- "I can't handle that very well; good luck.");
- error();
- do {
- get_token();
- } while(!(cur_input.loc_field == 0));
- }
- end_token_list();
- end_graf();
- unsave();
- output_active = false;
- insert_penalties = 0;
- if (eqtb[(hash_size + 1833)].hh.v.RH != 0)
- {
- print_err("Output routine didn't use all of ");
- print_esc("box");
- print_int(255);
- help3("Your \\output commands should empty \\box255,",
- "e.g., by saying `\\ship_out\\box255'.",
- "Proceed; I'll discard its present contents.");
- box_error(255);
- }
- if (tail != head)
- {
- mem[page_tail].hh.v.RH = mem[head].hh.v.RH;
- page_tail = tail;
- }
- if (mem[page_head].hh.v.RH != 0)
- {
- if (mem[contrib_head].hh.v.RH == 0)
- nest[0].tail_field = page_tail;
- mem[page_tail].hh.v.RH = mem[contrib_head].hh.v.RH;
- mem[contrib_head].hh.v.RH = mem[page_head].hh.v.RH;
- mem[page_head].hh.v.RH = 0;
- page_tail = page_head;
- }
- pop_nest();
- build_page();
- }
- break;
- case 10 :
- build_discretionary();
- break;
- case 6 :
-/* align_group: begin back_input; cur_tok:=cs_token_flag+frozen_cr; */
- {
- back_input();
-/* cur_tok = (hash_size + 4610); */
-/* cur_tok = (hash_size + 4095 + 515); */
- cur_tok = (hash_size + hash_extra + 4095 + 515);
- print_err("Missing ");
- print_esc("cr");
- print_string("inserted");
- help1("I'm guessing that you meant to end an alignment here.");
- ins_error();
- }
- break;
- case 7 :
- {
- end_graf();
- unsave();
- align_peek();
- }
- break;
- case 12 :
- {
- end_graf();
- unsave();
- save_ptr = save_ptr - 2;
- p = vpackage(mem[head].hh.v.RH, save_stack[
- save_ptr + 1].cint, save_stack[save_ptr + 0].cint,
- 1073741823L); /* 2^30 - 1 */
- pop_nest();
- {
- mem[tail].hh.v.RH = new_noad();
- tail = mem[tail].hh.v.RH;
- }
- mem[tail].hh.b0 = 29;
- mem[tail + 1].hh.v.RH = 2;
- mem[tail + 1].hh.v.LH = p;
- }
- break;
- case 13 :
- build_choices();
- break;
- case 9 :
- {
- unsave();
- decr(save_ptr);
- mem[save_stack[save_ptr + 0].cint].hh.v.RH = 3;
- p = fin_mlist(0);
- mem[save_stack[save_ptr + 0].cint].hh.v.LH = p;
- if (p != 0)
- if (mem[p].hh.v.RH == 0)
- if (mem[p].hh.b0 == 16)
- {
- if (mem[p + 3].hh.v.RH == 0)
- if (mem[p + 2].hh.v.RH == 0)
- {
- mem[save_stack[save_ptr + 0].cint].hh = mem[p + 1].hh;
- free_node(p, 4);
- }
- }
- else if (mem[p].hh.b0 == 28)
- if (save_stack[save_ptr + 0].cint == tail + 1)
- if (mem[tail].hh.b0 == 16)
- {
- q = head;
- while(mem[q].hh.v.RH != tail)q = mem[q].hh
- .v.RH;
- mem[q].hh.v.RH = p;
- free_node(tail, 4);
- tail = p;
- }
- }
- break;
- default:
- {
- confusion("rightbrace");
- return; // abort_flag set
- }
- break;
- }
-}
-/* sec 1030 */
-/* main control loop */
-void main_control (void)
-{/* 60 21 70 80 90 91 92 95 100 101 110 111 112 120 10 */
- integer t;
- integer bSuppress; /* 199/Jan/5 */
-
- if (every_job != 0)/* everyjob */
- begin_token_list(every_job, 12);
-
-lab60:
- get_x_token(); /* big_switch */
-lab21:
- if (interrupt != 0)
- if (OK_to_interrupt){
- back_input();
- {
- if (interrupt != 0){
- pause_for_instructions();
- }
- }
- goto lab60;
- }
- ;
-#ifdef DEBUG
- if (panicking)check_mem(false);
-#endif /* DEBUG */
- if (tracing_commands > 0)
- show_cur_cmd_chr();
-
-/* the big switch --- don't bother to test abort_flag ??? */
- switch(abs(mode)+ cur_cmd){
- case 113 :
- case 114 :
- case 170 :
- goto lab70;
- break;
- case 118 :
- {
- scan_char_num();
- cur_chr = cur_val;
- goto lab70;
- }
- break;
- case 167 :
- {
- get_x_token();
- if ((cur_cmd == 11)||(cur_cmd == 12)||(cur_cmd == 68)||(
- cur_cmd == 16))
- cancel_boundary = true;
- goto lab21;
- }
- break;
- case 112 :
- if (space_factor == 1000)goto lab120;
- else {
- app_space();
- }
- break;
- case 166 :
- case 267 :
- goto lab120;
- break;
- case 1 :
- case 102 :
- case 203 :
- case 11 :
- case 213 :
- case 268 :
- ;
- break;
- case 40 :
- case 141 :
- case 242 :
- {
- do {
- get_x_token();
- } while(!(cur_cmd != 10));
- goto lab21;
- }
- break;
- case 15 :
- if (its_all_over ())return;
- break;
- case 23 :
- case 123 :
- case 224 :
- case 71 :
- case 172 :
- case 273 :
- case 39 :
- case 45 :
- case 49 :
- case 150 :
- case 7 :
- case 108 :
- case 209 :
- report_illegal_case();
- break;
- case 8 :
- case 109 :
- case 9 :
- case 110 :
- case 18 :
- case 119 :
- case 70 :
- case 171 :
- case 51 :
- case 152 :
- case 16 :
- case 117 :
- case 50 :
- case 151 :
- case 53 :
- case 154 :
- case 67 :
- case 168 :
- case 54 :
- case 155 :
- case 55 :
- case 156 :
- case 57 :
- case 158 :
- case 56 :
- case 157 :
- case 31 :
- case 132 :
- case 52 :
- case 153 :
- case 29 :
- case 130 :
- case 47 :
- case 148 :
- case 212 :
- case 216 :
- case 217 :
- case 230 :
- case 227 :
- case 236 :
- case 239 :
- insert_dollar_sign();
- break;
- case 37 :
- case 137 :
- case 238 :
- {
- {
- mem[tail].hh.v.RH = scan_rule_spec();
- tail = mem[tail].hh.v.RH;
- }
- if (abs(mode)== 1)
- cur_list.aux_field.cint = ignore_depth;
- else if (abs(mode)== 102)
- space_factor = 1000;
- }
- break;
- case 28 :
- case 128 :
- case 229 :
- case 231 :
- append_glue();
- break;
- case 30 :
- case 131 :
- case 232 :
- case 233 :
- append_kern();
- break;
- case 2 :
- case 103 :
- new_save_level(1);
- break;
- case 62 :
- case 163 :
- case 264 :
- new_save_level(14);
- break;
- case 63 :
- case 164 :
- case 265 :
- if (cur_group == 14) unsave();
- else off_save();
- break;
- case 3 :
- case 104 :
- case 205 :
- handle_right_brace();
- break;
- case 22 :
- case 124 :
- case 225 :
- {
- t = cur_chr;
- scan_dimen(false, false, false);
- if (t == 0)scan_box(cur_val);
- else scan_box(- (integer) cur_val);
- }
- break;
- case 32 :
- case 133 :
- case 234 :
-/* scan_box(leader_flag-a_leaders+cur_chr); */
- scan_box(1073742237L + cur_chr); /* 2^30 + 513 - 100 ? */
- break;
- case 21 :
- case 122 :
- case 223 :
- begin_box(0);
- break;
- case 44 :
- new_graf(cur_chr > 0);
- break;
- case 12 :
- case 13 :
- case 17 :
- case 69 :
- case 4 :
- case 24 :
- case 36 :
- case 46 :
- case 48 :
- case 27 :
- case 34 :
- case 65 :
- case 66 :
- {
- back_input();
- new_graf(true);
- }
- break;
- case 145 :
- case 246 :
- indent_in_hmode();
- break;
- case 14 :
- {
- normal_paragraph();
- if (mode > 0){
- build_page();
- }
- }
- break;
- case 115 :
- {
- if (align_state < 0){
- off_save();
- }
- end_graf();
- if (mode == 1){
- build_page();
- }
- }
- break;
- case 116 :
- case 129 :
- case 138 :
- case 126 :
- case 134 :
- head_for_vmode();
- break;
- case 38 :
- case 139 :
- case 240 :
- case 140 :
- case 241 :
- begin_insert_or_adjust();
- break;
- case 19 :
- case 120 :
- case 221 :
- make_mark();
- break;
- case 43 :
- case 144 :
- case 245 :
- append_penalty();
- break;
- case 26 :
- case 127 :
- case 228 :
- delete_last();
- break;
- case 25 :
- case 125 :
- case 226 :
- unpackage();
- break;
- case 146 :
- append_italic_correction();
- break;
- case 247 :
- {
- mem[tail].hh.v.RH = new_kern(0);
- tail = mem[tail].hh.v.RH;
- }
- break;
- case 149 :
- case 250 :
- append_discretionary();
- break;
- case 147 :
- make_accent();
- break;
- case 6 :
- case 107 :
- case 208 :
- case 5 :
- case 106 :
- case 207 :
- align_error();
- break;
- case 35 :
- case 136 :
- case 237 :
- noalign_error();
- break;
- case 64 :
- case 165 :
- case 266 :
- omit_error();
- break;
- case 33 :
- case 135 :
- init_align();
- break;
- case 235 :
- if (privileged ())
- if (cur_group == 15)init_align();
- else off_save();
-
- break;
- case 10 :
- case 111 :
- do_endv();
- break;
- case 68 :
- case 169 :
- case 270 :
- cs_error();
- break;
- case 105 :
- init_math();
- break;
- case 251 :
- if (privileged ())
- if (cur_group == 15) start_eq_no();
- else off_save();
- break;
- case 204 :
- {
- {
- mem[tail].hh.v.RH = new_noad();
- tail = mem[tail].hh.v.RH;
- }
- back_input();
- scan_math(tail + 1);
- }
- break;
- case 214 :
- case 215 :
- case 271 :
- set_math_char(eqtb[(hash_size + 2907) + cur_chr].hh.v.RH);
- break;
- case 219 :
- {
- scan_char_num();
- cur_chr = cur_val;
- set_math_char(eqtb[(hash_size + 2907) + cur_chr].hh.v.RH);
- }
- break;
- case 220 :
- {
- scan_fifteen_bit_int();
- set_math_char(cur_val);
- }
- break;
- case 272 :
- set_math_char(cur_chr);
- break;
- case 218 :
- {
- scan_twenty_seven_bit_int();
- set_math_char(cur_val / 4096);
-/* set_math_char(cur_val >> 12); */
- }
- break;
- case 253 :
- {
- {
- mem[tail].hh.v.RH = new_noad();
- tail = mem[tail].hh.v.RH;
- }
- mem[tail].hh.b0 = cur_chr;
- scan_math(tail + 1);
- }
- break;
- case 254 :
- math_limit_switch();
- break;
- case 269 :
- math_radical();
- break;
- case 248 :
- case 249 :
- math_ac();
- break;
- case 259 :
- {
- scan_spec(12, false);
- normal_paragraph();
- push_nest();
- mode = -1;
- cur_list.aux_field.cint = ignore_depth;
- if (every_vbox != 0)/* everyvbox */
- begin_token_list(every_vbox, 11);
- }
- break;
- case 256 :
- {
- mem[tail].hh.v.RH = new_style(cur_chr);
- tail = mem[tail].hh.v.RH;
- }
- break;
- case 258 :
- {
- {
- mem[tail].hh.v.RH = new_glue(0);
- tail = mem[tail].hh.v.RH;
- }
- mem[tail].hh.b1 = 98;
- }
- break;
- case 257 :
- append_choices();
- break;
- case 211 :
- case 210 :
- sub_sup();
- break;
- case 255 :
- math_fraction();
- break;
- case 252 :
- math_left_right();
- break;
- case 206 :
- if (cur_group == 15)after_math();
- else off_save();
- break;
- case 72 :
- case 173 :
- case 274 :
- case 73 :
- case 174 :
- case 275 :
- case 74 :
- case 175 :
- case 276 :
- case 75 :
- case 176 :
- case 277 :
- case 76 :
- case 177 :
- case 278 :
- case 77 :
- case 178 :
- case 279 :
- case 78 :
- case 179 :
- case 280 :
- case 79 :
- case 180 :
- case 281 :
- case 80 :
- case 181 :
- case 282 :
- case 81 :
- case 182 :
- case 283 :
- case 82 :
- case 183 :
- case 284 :
- case 83 :
- case 184 :
- case 285 :
- case 84 :
- case 185 :
- case 286 :
- case 85 :
- case 186 :
- case 287 :
- case 86 :
- case 187 :
- case 288 :
- case 87 :
- case 188 :
- case 289 :
- case 88 :
- case 189 :
- case 290 :
- case 89 :
- case 190 :
- case 291 :
- case 90 :
- case 191 :
- case 292 :
- case 91 :
- case 192 :
- case 293 :
- case 92 :
- case 193 :
- case 294 :
- case 93 :
- case 194 :
- case 295 :
- case 94 :
- case 195 :
- case 296 :
- case 95 :
- case 196 :
- case 297 :
- case 96 :
- case 197 :
- case 298 :
- case 97 :
- case 198 :
- case 299 :
- case 98 :
- case 199 :
- case 300 :
- case 99 :
- case 200 :
- case 301 :
- case 100 :
- case 201 :
- case 302 :
- case 101 :
- case 202 :
- case 303 :
- prefixed_command();
- break;
- case 41 :
- case 142 :
- case 243 :
- {
- get_token();
- after_token = cur_tok;
- }
- break;
- case 42 :
- case 143 :
- case 244 :
- {
- get_token();
- save_for_after(cur_tok);
- }
- break;
- case 61 :
- case 162 :
- case 263 :
- open_or_close_in();
- break;
- case 59 :
- case 160 :
- case 261 :
- issue_message();
- break;
- case 58 :
- case 159 :
- case 260 :
- shift_case();
- break;
- case 20 :
- case 121 :
- case 222 :
- show_whatever();
- break;
- case 60 :
- case 161 :
- case 262 :
- do_extension();
- break;
- } /* end of big switch */
- goto lab60; /* main_loop */
-
-lab70:
- main_s = eqtb[(hash_size + 2651) + cur_chr].hh.v.RH;
- if (main_s == 1000)
- space_factor = 1000;
- else if (main_s < 1000)
- {
- if (main_s > 0)
- space_factor = main_s;
- }
- else if (space_factor < 1000)
- space_factor = 1000;
- else space_factor = main_s;
- main_f = eqtb[(hash_size + 1834)].hh.v.RH;
- bchar = font_bchar[main_f];
- false_bchar = font_false_bchar[main_f];
- if (mode > 0)
- if (language != clang)
- fix_language();
- {
- lig_stack = avail;
- if (lig_stack == 0)
- lig_stack = get_avail();
- else {
- avail = mem[lig_stack].hh.v.RH;
- mem[lig_stack].hh.v.RH = 0;
- ;
-#ifdef STAT
- incr(dyn_used);
-#endif /* STAT */
- }
- }
- mem[lig_stack].hh.b0 = main_f;
- cur_l = cur_chr;
- mem[lig_stack].hh.b1 = cur_l;
- cur_q = tail;
- if (cancel_boundary)
- {
-/* begin cancel_boundary:=false; main_k:=non_address; l.20093 */
- cancel_boundary = false;
-/* main_k:=non_address 3.14159 */
-/* main_k = font_mem_size; */ /* OK ? 1993/Nov/29 */
- main_k = non_address; /* i.e. --- 1995/Jan/15 3.14159 */
- }
- else main_k = bchar_label[main_f];
-/* if main_k=non_address then goto main_loop_move+2; l.20096 */
-/* if (main_k == font_mem_size) */
- if (main_k == non_address) /* i.e. 0 --- 1995/Jan/15 */
-/* cur_r:=cur_l; cur_l:=non_char; */
- goto lab92;
- cur_r = cur_l;
- cur_l = 256; /* cur_l:=non_char; */
-/* goto main_lig_loop+1; l.20071 */
- goto lab111;
-
-/* main_loop_wrapup:@<Make a ligature node, if |ligature_present|;
- insert a null discretionary, if appropriate@>; */
-/* @d wrapup(#)==if cur_l<non_char then */
-/* main_loop_wrapup */
-lab80: if (cur_l < 256)
- {
-/* begin if character(tail)=qi(hyphen_char[main_f]) then
- if link(cur_q)>null then ... l.20107 */
- if (mem[tail].hh.b1 == hyphen_char[main_f])
-/* if (mem[cur_q].hh.v.RH > 0) */ /* NO! */
- if (mem[cur_q].hh.v.RH != 0) /* BUG FIX l.20107 */
- ins_disc = true;
- if (ligature_present)
- {
- main_p = new_ligature(main_f, cur_l, mem[cur_q].hh.v.RH);
- if (lft_hit)
- {
- mem[main_p].hh.b1 = 2;
- lft_hit = false;
- }
- if (rt_hit)
- if (lig_stack == 0)
- {
- incr(mem[main_p].hh.b1);
- rt_hit = false;
- }
- mem[cur_q].hh.v.RH = main_p;
- tail = main_p;
- ligature_present = false;
- }
-/* if ins_disc then l.20110 */
- if (ins_disc)
- {
- ins_disc = false;
-/* if mode>0 then tail_append(new_disc); l.20112 */
- if (mode > 0)
- {
- mem[tail].hh.v.RH = new_disc();
- tail = mem[tail].hh.v.RH;
- }
- }
- }
-
-/* main_loop_move */
-lab90:
- if (lig_stack == 0) goto lab21;
- cur_q = tail;
- cur_l = mem[lig_stack].hh.b1;
-
-lab91:
- if (!(lig_stack >= hi_mem_min)) goto lab95;
-
-lab92: if ((cur_chr < font_bc[main_f])||(cur_chr > font_ec[main_f]))
- {
- char_warning(main_f, cur_chr);
- {
- mem[lig_stack].hh.v.RH = avail;
- avail = lig_stack;
- ;
-#ifdef STAT
- decr(dyn_used);
-#endif /* STAT */
- }
- goto lab60;
- }
- main_i = font_info[char_base[main_f]+ cur_l].qqqq;
- if (!(main_i.b0 > 0))
- {
- char_warning(main_f, cur_chr);
- {
- mem[lig_stack].hh.v.RH = avail;
- avail = lig_stack;
- ;
-#ifdef STAT
- decr(dyn_used);
-#endif /* STAT */
- }
- goto lab60;
- }
- {
- link(tail) = lig_stack;
- tail = lig_stack;
- }
-
-/* main_loop_lookahead */
-lab100:
- get_next();
- if (cur_cmd == 11) goto lab101;
- if (cur_cmd == 12) goto lab101;
- if (cur_cmd == 68) goto lab101;
- x_token();
- if (cur_cmd == 11) goto lab101;
- if (cur_cmd == 12) goto lab101;
- if (cur_cmd == 68) goto lab101;
- if (cur_cmd == 16) {
- scan_char_num();
- cur_chr = cur_val;
- goto lab101;
- }
- if (cur_cmd == 65) bchar = 256;
- cur_r = bchar;
- lig_stack = 0;
- goto lab110;
-
-lab101: main_s = eqtb[(hash_size + 2651) + cur_chr].hh.v.RH;
- if (main_s == 1000)
- space_factor = 1000;
- else if (main_s < 1000)
- {
- if (main_s > 0)
- space_factor = main_s;
- }
- else if (space_factor < 1000)
- space_factor = 1000;
- else space_factor = main_s;
- {
- lig_stack = avail;
- if (lig_stack == 0)
- lig_stack = get_avail();
- else {
- avail = mem[lig_stack].hh.v.RH;
- mem[lig_stack].hh.v.RH = 0;
- ;
-#ifdef STAT
- incr(dyn_used);
-#endif /* STAT */
- }
- }
- mem[lig_stack].hh.b0 = main_f;
- cur_r = cur_chr;
- mem[lig_stack].hh.b1 = cur_r;
- if (cur_r == false_bchar)
- cur_r = 256;
-
-// main_lig_loop:@<If there's a ligature/kern command relevant to |cur_l| and
-// |cur_r|, adjust the text appropriately; exit to |main_loop_wrapup|@>;
-lab110:
-/* if char_tag(main_i)<>lig_tag then goto main_loop_wrapup; */
- if (((main_i.b2) % 4)!= 1)
- goto lab80;
-/* 425 in tex82.bug */
- if (cur_r == 256)
- goto lab80;
-/* main_k:=lig_kern_start(main_f)(main_i); */
- main_k = lig_kern_base[main_f]+ main_i.b3;
-/* main_j:=font_info[main_k].qqqq; */
- main_j = font_info[main_k].qqqq;
-/* if skip_byte(main_j)<=stop_flag then goto main_lig_loop+2; */
- if (main_j.b0 <= 128)goto lab112;
-/* main_k:=lig_kern_restart(main_f)(main_j); */
- main_k = lig_kern_base[main_f]+ 256 * main_j.b2 + main_j.b3 + 32768L - 256 *
- (128);
-
-/* main_lig_loop+1:main_j:=font_info[main_k].qqqq; */
-lab111: main_j = font_info[main_k].qqqq;
-
-/* main_lig_loop+2:if next_char(main_j)=cur_r then l.20184 */
-lab112:
-/* provide for suppression of f-ligatures 99/Jan/5 */
- bSuppress = 0;
- if (suppress_f_ligs && main_j.b1 == cur_r && main_j.b2 == 0) {
- if (cur_l == 'f')
- bSuppress = 1;
- }
-
-/* if (main_j.b1 == cur_r)*/
- if (main_j.b1 == cur_r && bSuppress == 0) /* 99/Jan/5 */
-/* if skip_byte(main_j)<=stop_flag then l.20185 */
-// @<Do ligature or kern command, returning to |main_lig_loop|
-// or |main_loop_wrapup| or |main_loop_move|@>;
- if (main_j.b0 <= 128)
- {
-/* begin if op_byte(main_j)>=kern_flag then l.20225 */
- if (main_j.b2 >= 128)
- {
-/* @d wrapup(#)==if cur_l<non_char then */
- if (cur_l < 256)
- {
-/* if character(tail)=qi(hyphen_char[main_f]) then if link(cur_q)>null */
- if (mem[tail].hh.b1 == hyphen_char[main_f])
-/* if (mem[cur_q].hh.v.RH > 0) */ /* 94/Mar/22 ?????????????? */
- if (mem[cur_q].hh.v.RH != 0) /* BUG FIX l.20107l.20186 */
- ins_disc = true;
-/* if ligature_present then pack_lig(#); */
- if (ligature_present)
- {
- main_p = new_ligature(main_f, cur_l, mem[cur_q].hh.v.RH);
- if (lft_hit)
- {
- mem[main_p].hh.b1 = 2;
- lft_hit = false;
- }
- if (rt_hit)
- if (lig_stack == 0)
- {
- incr(mem[main_p].hh.b1);
- rt_hit = false;
- }
- mem[cur_q].hh.v.RH = main_p;
- tail = main_p;
- ligature_present = false;
- }
- if (ins_disc)
- {
- ins_disc = false;
- if (mode > 0)
- {
- mem[tail].hh.v.RH = new_disc();
- tail = mem[tail].hh.v.RH;
- }
- }
- }
- {
- mem[tail].hh.v.RH = new_kern(font_info[kern_base[
- main_f]+ 256 * main_j.b2 + main_j.b3].cint);
- tail = mem[tail].hh.v.RH;
- }
- goto lab90;
- }
-/* begin if cur_l=non_char then lft_hit:=true; */
- if (cur_l == 256)
- lft_hit = true;
- else if (lig_stack == 0)
- rt_hit = true;
- {
- if (interrupt != 0){
- pause_for_instructions();
- }
- }
- switch(main_j.b2)
- {case 1 :
- case 5 :
- {
- cur_l = main_j.b3;
- main_i = font_info[char_base[main_f]+ cur_l].qqqq;
- ligature_present = true;
- }
- break;
- case 2 :
- case 6 :
- {
- cur_r = main_j.b3;
- if (lig_stack == 0)
- {
- lig_stack = new_lig_item(cur_r);
- bchar = 256;
- }
- else if ((lig_stack >= hi_mem_min))
- {
- main_p = lig_stack;
- lig_stack = new_lig_item(cur_r);
- mem[lig_stack + 1].hh.v.RH = main_p;
- }
- else mem[lig_stack].hh.b1 = cur_r;
- }
- break;
- case 3 :
- {
- cur_r = main_j.b3;
- main_p = lig_stack;
- lig_stack = new_lig_item(cur_r);
- mem[lig_stack].hh.v.RH = main_p;
- }
- break;
- case 7 :
- case 11 :
- {
- if (cur_l < 256) /* if cur_l<non_char then */
-/* begin if character(tail)=qi(hyphen_char[main_f]) then if link(cur_q)>null
-then */
- {
- if (mem[tail].hh.b1 == hyphen_char[main_f])
-/* if (mem[cur_q].hh.v.RH > 0) */ /* 94/Mar/22 */
- if (mem[cur_q].hh.v.RH != 0) /* BUG FIX ???????????? */
- ins_disc = true;
- if (ligature_present)
- {
- main_p = new_ligature(main_f, cur_l, mem[cur_q].hh.v.RH);
- if (lft_hit)
- {
- mem[main_p].hh.b1 = 2;
- lft_hit = false;
- }
-/* if (false)
- if (lig_stack == 0){
- incr(mem[main_p].hh.b1);
- rt_hit = false;
- } */ /* removed 99/Jan/6 */
- mem[cur_q].hh.v.RH = main_p;
- tail = main_p;
- ligature_present = false;
- }
- if (ins_disc)
- {
- ins_disc = false;
- if (mode > 0)
- {
- mem[tail].hh.v.RH = new_disc();
- tail = mem[tail].hh.v.RH;
- }
- }
- }
- cur_q = tail;
- cur_l = main_j.b3;
- main_i = font_info[char_base[main_f]+ cur_l].qqqq;
- ligature_present = true;
- }
- break;
- default:
- {
- cur_l = main_j.b3;
- ligature_present = true;
- if (lig_stack == 0)
- goto lab80;
- else goto lab91;
- }
- break;
- }
- if (main_j.b2 > 4)
- if (main_j.b2 != 7)
- goto lab80;
- if (cur_l < 256)
- goto lab110;
- main_k = bchar_label[main_f];
- goto lab111;
- }
- if (main_j.b0 == 0)
- incr(main_k);
- else {
- if (main_j.b0 >= 128)
- goto lab80;
- main_k = main_k + main_j.b0 + 1;
- }
- goto lab111;
-
-/* main_move_log */
-lab95: main_p = mem[lig_stack + 1].hh.v.RH;
-/* if main_p>null then tail_append(main_p); l.20137 */
-/* if (main_p > 0) */ /* 92/Mar/22 */
- if (main_p != 0) /* BUG FIX */
- {
- mem[tail].hh.v.RH = main_p;
- tail = mem[tail].hh.v.RH;
- }
- temp_ptr = lig_stack;
- lig_stack = mem[temp_ptr].hh.v.RH;
- free_node(temp_ptr, 2);
- main_i = font_info[char_base[main_f]+ cur_l].qqqq;
- ligature_present = true;
- if (lig_stack == 0)
-/* if main_p>null then goto main_loop_lookahead l.20142 */
-/* if (main_p > 0) */ /* 94/Mar/2 */
- if (main_p != 0) /* BUG FIX */
- goto lab100;
- else cur_r = bchar;
- else cur_r = mem[lig_stack].hh.b1;
- goto lab110;
-
-/* append_normal_space */
-lab120: if (eqtb[(hash_size + 794)].hh.v.RH == 0)
- {
- {
- main_p = font_glue[eqtb[(hash_size + 1834)].hh.v.RH];
- if (main_p == 0)
- {
- main_p = new_spec(0);
- main_k = param_base[eqtb[(hash_size + 1834)].hh.v.RH]+ 2;
- mem[main_p + 1].cint = font_info[main_k].cint;
- mem[main_p + 2].cint = font_info[main_k + 1].cint;
- mem[main_p + 3].cint = font_info[main_k + 2].cint;
- font_glue[eqtb[(hash_size + 1834)].hh.v.RH]= main_p;
- }
- }
- temp_ptr = new_glue(main_p);
- }
- else temp_ptr = new_param_glue(12);
- mem[tail].hh.v.RH = temp_ptr;
- tail = temp_ptr;
- goto lab60;
-} /* end of main_control */
-/* give_err_help etc followed here in the old tex8.c */
+/*\r
+ Copyright 2014 Clerk Ma\r
+\r
+ This program is free software; you can redistribute it and/or modify\r
+ it under the terms of the GNU General Public License as published by\r
+ the Free Software Foundation; either version 2 of the License, or\r
+ (at your option) any later version.\r
+\r
+ This program is distributed in the hope that it will be useful, but\r
+ WITHOUT ANY WARRANTY; without even the implied warranty of\r
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU\r
+ General Public License for more details.\r
+\r
+ You should have received a copy of the GNU General Public License\r
+ along with this program; if not, write to the Free Software\r
+ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA\r
+ 02110-1301 USA.\r
+*/\r
+\r
+#define EXTERN extern\r
+\r
+#include "yandytex.h"\r
+\r
+/* sec 1181 */\r
+void math_fraction (void)\r
+{\r
+ small_number c;\r
+\r
+ c = cur_chr;\r
+\r
+ if (incompleat_noad != 0)\r
+ {\r
+ if (c >= delimited_code)\r
+ {\r
+ scan_delimiter(garbage, false);\r
+ scan_delimiter(garbage, false);\r
+ }\r
+\r
+ if (c % delimited_code == 0)\r
+ scan_dimen(false, false, false);\r
+\r
+ print_err("Ambiguous; you need another { and }");\r
+ help3("I'm ignoring this fraction specification, since I don't",\r
+ "know whether a construction like `x \\over y \\over z'",\r
+ "means `{x \\over y} \\over z' or `x \\over {y \\over z}'.");\r
+ error();\r
+ }\r
+ else\r
+ {\r
+ incompleat_noad = get_node(fraction_noad_size);\r
+ type(incompleat_noad) = fraction_noad;\r
+ subtype(incompleat_noad) = normal;\r
+ math_type(numerator(incompleat_noad)) = sub_mlist;\r
+ info(numerator(incompleat_noad)) = link(head);\r
+ mem[denominator(incompleat_noad)].hh = empty_field;\r
+ mem[left_delimiter(incompleat_noad)].qqqq = null_delimiter;\r
+ mem[right_delimiter(incompleat_noad)].qqqq = null_delimiter;\r
+ link(head) = 0;\r
+ tail = head;\r
+\r
+ if (c >= delimited_code)\r
+ {\r
+ scan_delimiter(left_delimiter(incompleat_noad), false);\r
+ scan_delimiter(right_delimiter(incompleat_noad), false);\r
+ }\r
+\r
+ switch (c % delimited_code)\r
+ {\r
+ case above_code:\r
+ scan_dimen(false, false, false);\r
+ thickness(incompleat_noad) = cur_val;\r
+ break;\r
+\r
+ case over_code:\r
+ thickness(incompleat_noad) = default_code;\r
+ break;\r
+\r
+ case atop_code:\r
+ thickness(incompleat_noad) = 0;\r
+ break;\r
+ }\r
+ }\r
+}\r
+/* sec 1191 */\r
+void math_left_right (void)\r
+{\r
+ small_number t;\r
+ pointer p;\r
+\r
+ t = cur_chr;\r
+\r
+ if ((t == right_noad) && (cur_group != math_left_group))\r
+ {\r
+ if (cur_group == math_shift_group)\r
+ {\r
+ scan_delimiter(garbage, false);\r
+ print_err("Extra ");\r
+ print_esc("right");\r
+ help1("I'm ignoring a \\right that had no matching \\left.");\r
+ error();\r
+ }\r
+ else\r
+ off_save();\r
+ }\r
+ else\r
+ {\r
+ p = new_noad();\r
+ type(p) = t;\r
+ scan_delimiter(delimiter(p), false);\r
+\r
+ if (t == left_noad)\r
+ {\r
+ push_math(math_left_group);\r
+ link(tail) = p;\r
+ tail = p;\r
+ }\r
+ else\r
+ {\r
+ p = fin_mlist(p);\r
+ unsave();\r
+ tail_append(new_noad());\r
+ type(tail) = inner_noad;\r
+ math_type(nucleus(tail)) = sub_mlist;\r
+ info(nucleus(tail)) = p;\r
+ }\r
+ }\r
+}\r
+/* sec 1194 */\r
+void after_math (void)\r
+{\r
+ boolean l;\r
+ boolean danger;\r
+ integer m;\r
+ pointer p;\r
+ pointer a;\r
+ pointer b;\r
+ scaled w;\r
+ scaled z;\r
+ scaled e;\r
+ scaled q;\r
+ scaled d;\r
+ scaled s;\r
+ small_number g1, g2;\r
+ pointer r;\r
+ pointer t;\r
+\r
+ danger = false;\r
+ \r
+ if ((font_params[fam_fnt(2 + text_size)] < total_mathsy_params) ||\r
+ (font_params[fam_fnt(2 + script_size)] < total_mathsy_params) ||\r
+ (font_params[fam_fnt(2 + script_script_size)] < total_mathsy_params))\r
+ {\r
+ print_err("Math formula deleted: Insufficient symbol fonts");\r
+ help3("Sorry, but I can't typeset math unless \\textfont 2",\r
+ "and \\scriptfont 2 and \\scriptscriptfont 2 have all",\r
+ "the \\fontdimen values needed in math symbol fonts.");\r
+ error();\r
+ flush_math();\r
+ danger = true;\r
+ }\r
+ else if ((font_params[fam_fnt(3 + text_size)] < total_mathex_params) ||\r
+ (font_params[fam_fnt(3 + script_size)] < total_mathex_params) ||\r
+ (font_params[fam_fnt(3 + script_script_size)] < total_mathex_params))\r
+ {\r
+ print_err("Math formula deleted: Insufficient extension fonts");\r
+ help3("Sorry, but I can't typeset math unless \\textfont 3",\r
+ "and \\scriptfont 3 and \\scriptscriptfont 3 have all",\r
+ "the \\fontdimen values needed in math extension fonts.");\r
+ error();\r
+ flush_math();\r
+ danger = true;\r
+ }\r
+\r
+ m = mode;\r
+ l = false;\r
+ p = fin_mlist(0);\r
+\r
+ if (mode == -m)\r
+ {\r
+ {\r
+ get_x_token();\r
+\r
+ if (cur_cmd != math_shift)\r
+ {\r
+ print_err("Display math should end with $$");\r
+ help2("The `$' that I just saw supposedly matches a previous `$$'.",\r
+ "So I shall assume that you typed `$$' both times.");\r
+ back_error();\r
+ }\r
+ }\r
+\r
+ cur_mlist = p;\r
+ cur_style = text_style;\r
+ mlist_penalties = false;\r
+ mlist_to_hlist();\r
+ a = hpack(link(temp_head), 0, 1);\r
+ unsave();\r
+ decr(save_ptr);\r
+\r
+ if (saved(0) == 1)\r
+ l = true;\r
+\r
+ danger = false;\r
+\r
+ if ((font_params[fam_fnt(2 + text_size)] < total_mathsy_params) ||\r
+ (font_params[fam_fnt(2 + script_size)] < total_mathsy_params) ||\r
+ (font_params[fam_fnt(2 + script_script_size)] < total_mathsy_params))\r
+ {\r
+ print_err("Math formula deleted: Insufficient symbol fonts");\r
+ help3("Sorry, but I can't typeset math unless \\textfont 2",\r
+ "and \\scriptfont 2 and \\scriptscriptfont 2 have all",\r
+ "the \\fontdimen values needed in math symbol fonts.");\r
+ error();\r
+ flush_math();\r
+ danger = true;\r
+ }\r
+ else if ((font_params[fam_fnt(3 + text_size)] < total_mathex_params) ||\r
+ (font_params[fam_fnt(3 + script_size)] < total_mathex_params) ||\r
+ (font_params[fam_fnt(3 + script_script_size)] < total_mathex_params))\r
+ {\r
+ print_err("Math formula deleted: Insufficient extension fonts");\r
+ help3("Sorry, but I can't typeset math unless \\textfont 3",\r
+ "and \\scriptfont 3 and \\scriptscriptfont 3 have all",\r
+ "the \\fontdimen values needed in math extension fonts.");\r
+ error();\r
+ flush_math();\r
+ danger = true;\r
+ }\r
+\r
+ m = mode;\r
+ p = fin_mlist(0);\r
+ }\r
+ else\r
+ a = 0;\r
+\r
+ if (m < 0)\r
+ {\r
+ tail_append(new_math(math_surround, before));\r
+ cur_mlist = p;\r
+ cur_style = text_style;\r
+ mlist_penalties = (mode > 0);\r
+ mlist_to_hlist();\r
+ link(tail) = link(temp_head);\r
+\r
+ while (link(tail) != 0)\r
+ tail = link(tail);\r
+\r
+ tail_append(new_math(math_surround, after));\r
+ space_factor = 1000;\r
+ unsave();\r
+ }\r
+ else\r
+ {\r
+ if (a == 0)\r
+ {\r
+ get_x_token();\r
+\r
+ if (cur_cmd != math_shift)\r
+ {\r
+ print_err("Display math should end with $$");\r
+ help2("The `$' that I just saw supposedly matches a previous `$$'.",\r
+ "So I shall assume that you typed `$$' both times.");\r
+ back_error();\r
+ }\r
+ }\r
+\r
+ cur_mlist = p;\r
+ cur_style = display_style;\r
+ mlist_penalties = false;\r
+ mlist_to_hlist();\r
+ p = link(temp_head);\r
+ adjust_tail = adjust_head;\r
+ b = hpack(p, 0, 1);\r
+ p = list_ptr(b);\r
+ t = adjust_tail;\r
+ adjust_tail = 0;\r
+ w = width(b);\r
+ z = display_width;\r
+ s = display_indent;\r
+\r
+ if ((a == 0) || danger)\r
+ {\r
+ e = 0;\r
+ q = 0;\r
+ }\r
+ else\r
+ {\r
+ e = width(a);\r
+ q = e + math_quad(text_size);\r
+ }\r
+\r
+ if (w + q > z)\r
+ {\r
+ if ((e != 0) && ((w - total_shrink[normal] + q <= z) || (total_shrink[fil] != 0) ||\r
+ (total_shrink[fill] != 0) || (total_shrink[filll] != 0)))\r
+ {\r
+ free_node(b, box_node_size);\r
+ b = hpack(p, z - q, 0);\r
+ }\r
+ else\r
+ {\r
+ e = 0;\r
+\r
+ if (w > z)\r
+ {\r
+ free_node(b, box_node_size);\r
+ b = hpack(p, z, 0);\r
+ }\r
+ }\r
+ w = width(b);\r
+ }\r
+\r
+ d = half(z - w);\r
+\r
+ if ((e > 0) && (d < 2 * e))\r
+ {\r
+ d = half(z - w - e);\r
+\r
+ if (p != 0)\r
+ if (!is_char_node(p))\r
+ if (type(p) == glue_node)\r
+ d = 0;\r
+ }\r
+\r
+ tail_append(new_penalty(pre_display_penalty));\r
+\r
+ if ((d + s <= pre_display_size) || l)\r
+ {\r
+ g1 = above_display_skip_code;\r
+ g2 = below_display_skip_code;\r
+ }\r
+ else\r
+ {\r
+ g1 = above_display_short_skip_code;\r
+ g2 = below_display_short_skip_code;\r
+ }\r
+ if (l && (e == 0))\r
+ {\r
+ shift_amount(a) = s;\r
+ append_to_vlist(a);\r
+ tail_append(new_penalty(10000));\r
+ }\r
+ else\r
+ {\r
+ tail_append(new_param_glue(g1));\r
+ }\r
+\r
+ if (e != 0)\r
+ {\r
+ r = new_kern(z - w - e - d);\r
+\r
+ if (l)\r
+ {\r
+ link(a) = r;\r
+ link(r) = b;\r
+ b = a;\r
+ d = 0;\r
+ }\r
+ else\r
+ {\r
+ link(b) = r;\r
+ link(r) = a;\r
+ }\r
+ b = hpack(b, 0, 1);\r
+ }\r
+\r
+ shift_amount(b) = s + d;\r
+ append_to_vlist(b);\r
+\r
+ if ((a != 0) && (e == 0) && !l)\r
+ {\r
+ tail_append(new_penalty(10000));\r
+ shift_amount(a) = s + z - width(a);\r
+ append_to_vlist(a);\r
+ g2 = 0;\r
+ }\r
+\r
+ if (t != adjust_head)\r
+ {\r
+ link(tail) = link(adjust_head);\r
+ tail = t;\r
+ }\r
+\r
+ tail_append(new_penalty(post_display_penalty));\r
+\r
+ if (g2 > 0)\r
+ {\r
+ tail_append(new_param_glue(g2));\r
+ }\r
+\r
+ resume_after_display();\r
+ }\r
+}\r
+/* sec 1200 */\r
+void resume_after_display (void)\r
+{\r
+ if (cur_group != math_shift_group)\r
+ {\r
+ confusion("display");\r
+ return;\r
+ }\r
+\r
+ unsave();\r
+ prev_graf = prev_graf + 3;\r
+ push_nest();\r
+ mode = hmode;\r
+ space_factor = 1000;\r
+ set_cur_lang();\r
+ clang = cur_lang;\r
+ prev_graf =(norm_min(left_hyphen_min) * 64 + norm_min(right_hyphen_min)) * 65536L + cur_lang;\r
+\r
+ {\r
+ get_x_token();\r
+\r
+ if (cur_cmd != spacer)\r
+ back_input();\r
+ }\r
+\r
+ if (nest_ptr == 1)\r
+ build_page();\r
+}\r
+/* sec 1215 */\r
+void get_r_token (void)\r
+{\r
+restart:\r
+ do\r
+ {\r
+ get_token();\r
+ }\r
+ while (!(cur_tok != space_token));\r
+\r
+ if ((cur_cs == 0) || (cur_cs > frozen_control_sequence))\r
+ {\r
+ print_err("Missing control sequence inserted");\r
+ help5("Please don't say `\\def cs{...}', say `\\def\\cs{...}'.",\r
+ "I've inserted an inaccessible control sequence so that your",\r
+ "definition will be completed without mixing me up too badly.",\r
+ "You can recover graciously from this error, if you're",\r
+ "careful; see exercise 27.2 in The TeXbook.");\r
+\r
+ if (cur_cs == 0)\r
+ back_input();\r
+\r
+ cur_tok = cs_token_flag + frozen_protection;\r
+ ins_error();\r
+ goto restart;\r
+ }\r
+}\r
+/* sec 1229 */\r
+void trap_zero_glue (void)\r
+{\r
+ if ((width(cur_val) == 0) && (stretch(cur_val) == 0) && (shrink(cur_val) == 0))\r
+ {\r
+ add_glue_ref(zero_glue);\r
+ delete_glue_ref(cur_val);\r
+ cur_val = 0;\r
+ }\r
+}\r
+/* sec 1236 */\r
+void do_register_command (small_number a)\r
+{\r
+ pointer l, q, r, s;\r
+ char p;\r
+\r
+ q = cur_cmd;\r
+\r
+ {\r
+ if (q != tex_register)\r
+ {\r
+ get_x_token();\r
+\r
+ if ((cur_cmd >= assign_int) && (cur_cmd <= assign_mu_glue))\r
+ {\r
+ l = cur_chr;\r
+ p = cur_cmd - assign_int;\r
+ goto found;\r
+ }\r
+\r
+ if (cur_cmd != tex_register)\r
+ {\r
+ print_err("You can't use `");\r
+ print_cmd_chr(cur_cmd, cur_chr);\r
+ prints("' after ");\r
+ print_cmd_chr(q, 0);\r
+ help1("I'm forgetting what you said and not changing anything.");\r
+ error();\r
+ return;\r
+ }\r
+ }\r
+\r
+ p = cur_chr;\r
+ scan_eight_bit_int();\r
+\r
+ switch (p)\r
+ {\r
+ case int_val:\r
+ l = cur_val + count_base;\r
+ break;\r
+\r
+ case dimen_val:\r
+ l = cur_val + scaled_base;\r
+ break;\r
+\r
+ case glue_val:\r
+ l = cur_val + skip_base;\r
+ break;\r
+\r
+ case mu_val:\r
+ l = cur_val + mu_skip_base;\r
+ break;\r
+ }\r
+ }\r
+\r
+found:\r
+ if (q == tex_register)\r
+ scan_optional_equals();\r
+ else if (scan_keyword("by"))\r
+ do_nothing();\r
+\r
+ arith_error = false;\r
+\r
+ if (q < multiply)\r
+ if (p < glue_val)\r
+ {\r
+ if (p == int_val)\r
+ scan_int();\r
+ else\r
+ scan_dimen(false, false, false);\r
+\r
+ if (q == advance)\r
+ cur_val = cur_val + eqtb[l].cint;\r
+ }\r
+ else\r
+ {\r
+ scan_glue(p);\r
+\r
+ if (q == advance)\r
+ {\r
+ q = new_spec(cur_val);\r
+ r = equiv(l);\r
+ delete_glue_ref(cur_val);\r
+ width(q) = width(q) + width(r);\r
+\r
+ if (stretch(q) == 0)\r
+ stretch_order(q) = normal;\r
+\r
+ if (stretch_order(q) == stretch_order(r))\r
+ stretch(q) = stretch(q) + stretch(r);\r
+ else if ((stretch_order(q) < stretch_order(r)) && (stretch(r) != 0))\r
+ {\r
+ stretch(q) = stretch(r);\r
+ stretch_order(q) = stretch_order(r);\r
+ }\r
+\r
+ if (shrink(q) == 0)\r
+ shrink_order(q) = normal;\r
+\r
+ if (shrink_order(q) == shrink_order(r))\r
+ shrink(q) = shrink(q) + shrink(r);\r
+ else if ((shrink_order(q) < shrink_order(r)) && (shrink(r) != 0))\r
+ {\r
+ shrink(q) = shrink(r);\r
+ shrink_order(q) = shrink_order(r);\r
+ }\r
+ cur_val = q;\r
+ }\r
+ }\r
+ else\r
+ {\r
+ scan_int();\r
+\r
+ if (p < glue_val)\r
+ if (q == multiply)\r
+ if (p == int_val)\r
+ cur_val = mult_integers(eqtb[l].cint, cur_val);\r
+ else\r
+ cur_val = nx_plus_y(eqtb[l].cint, cur_val, 0);\r
+ else\r
+ cur_val = x_over_n(eqtb[l].cint, cur_val);\r
+ else\r
+ {\r
+ s = equiv(l);\r
+ r = new_spec(s);\r
+\r
+ if (q == multiply)\r
+ {\r
+ width(r) = nx_plus_y(width(s), cur_val, 0);\r
+ stretch(r) = nx_plus_y(stretch(s), cur_val, 0);\r
+ shrink(r) = nx_plus_y(shrink(s), cur_val, 0);\r
+ }\r
+ else\r
+ {\r
+ width(r) = x_over_n(width(s), cur_val);\r
+ stretch(r) = x_over_n(stretch(s), cur_val);\r
+ shrink(r) = x_over_n(shrink(s), cur_val);\r
+ }\r
+ cur_val = r;\r
+ }\r
+ }\r
+\r
+ if (arith_error)\r
+ {\r
+ print_err("Arithmetic overflow");\r
+ help2("I can't carry out that multiplication or division,",\r
+ "since the result is out of range.");\r
+\r
+ if (p >= glue_val)\r
+ delete_glue_ref(cur_val);\r
+\r
+ error();\r
+ return;\r
+ }\r
+\r
+ if (p < glue_val)\r
+ word_define(l, cur_val);\r
+ else\r
+ {\r
+ trap_zero_glue();\r
+ define(l, glue_ref, cur_val);\r
+ }\r
+}\r
+/* sec 1243 */\r
+void alter_aux (void)\r
+{\r
+ halfword c;\r
+\r
+ if (cur_chr != abs(mode))\r
+ report_illegal_case();\r
+ else\r
+ {\r
+ c = cur_chr;\r
+ scan_optional_equals();\r
+\r
+ if (c == vmode)\r
+ {\r
+ scan_dimen(false, false, false);\r
+ prev_depth = cur_val;\r
+ }\r
+ else\r
+ {\r
+ scan_int();\r
+\r
+ if ((cur_val <= 0) || (cur_val > 32767))\r
+ {\r
+ print_err("Bad space factor");\r
+ help1("I allow only values in the range 1..32767 here.");\r
+ int_error(cur_val);\r
+ }\r
+ else\r
+ space_factor = cur_val;\r
+ }\r
+ }\r
+}\r
+/* sec 1244 */\r
+void alter_prev_graf (void)\r
+{\r
+ integer p;\r
+\r
+ nest[nest_ptr] = cur_list;\r
+ p = nest_ptr;\r
+\r
+ while (abs(nest[p].mode_field) != vmode)\r
+ decr(p);\r
+\r
+ scan_optional_equals();\r
+ scan_int();\r
+\r
+ if (cur_val < 0)\r
+ {\r
+ print_err("Bad ");\r
+ print_esc("prevgraf");\r
+ help1("I allow only nonnegative values here.");\r
+ int_error(cur_val);\r
+ }\r
+ else\r
+ {\r
+ nest[p].pg_field = cur_val;\r
+ cur_list = nest[nest_ptr];\r
+ }\r
+}\r
+/* sec 1245 */\r
+void alter_page_so_far (void)\r
+{\r
+ char c;\r
+\r
+ c = cur_chr;\r
+ scan_optional_equals();\r
+ scan_dimen(false, false, false);\r
+ page_so_far[c] = cur_val;\r
+}\r
+/* sec 1246 */\r
+void alter_integer (void)\r
+{\r
+ char c;\r
+\r
+ c = cur_chr;\r
+ scan_optional_equals();\r
+ scan_int();\r
+\r
+ if (c == 0)\r
+ dead_cycles = cur_val;\r
+ else\r
+ insert_penalties = cur_val;\r
+}\r
+/* sec 1247 */\r
+void alter_box_dimen (void)\r
+{\r
+ small_number c;\r
+ eight_bits b;\r
+\r
+ c = cur_chr;\r
+ scan_eight_bit_int();\r
+ b = cur_val;\r
+ scan_optional_equals();\r
+ scan_dimen(false, false, false);\r
+\r
+ if (box(b) != 0)\r
+ mem[box(b) + c].cint = cur_val;\r
+}\r
+/* sec 1257 */\r
+void new_font (small_number a)\r
+{\r
+ pointer u;\r
+ scaled s;\r
+ internal_font_number f;\r
+ str_number t;\r
+ char old_setting;\r
+ str_number flushable_string;\r
+\r
+ if (job_name == 0)\r
+ open_log_file();\r
+\r
+ get_r_token();\r
+ u = cur_cs;\r
+\r
+ if (u >= hash_base)\r
+ t = text(u);\r
+ else if (u >= single_base)\r
+ if (u == null_cs)\r
+ t = 1213; /* FONT */\r
+ else\r
+ t = u - single_base;\r
+ else\r
+ {\r
+ old_setting = selector;\r
+ selector = new_string;\r
+ prints("FONT");\r
+ print(u - active_base);\r
+ selector = old_setting;\r
+ str_room(1);\r
+ t = make_string();\r
+ }\r
+\r
+ define(u, set_font, null_font);\r
+ scan_optional_equals();\r
+ scan_file_name();\r
+\r
+ name_in_progress = true;\r
+\r
+ if (scan_keyword("at"))\r
+ {\r
+ scan_dimen(false, false, false);\r
+ s = cur_val; \r
+\r
+ if ((s <= 0) || (s >= 134217728L)) /* 2^27 */\r
+ {\r
+ print_err("Improper `at' size (");\r
+ print_scaled(s);\r
+ prints("pt), replaced by 10pt");\r
+ help2("I can only handle fonts at positive sizes that are",\r
+ "less than 2048pt, so I've changed what you said to 10pt.");\r
+ error();\r
+ s = 10 * unity;\r
+ }\r
+ }\r
+ else if (scan_keyword("scaled"))\r
+ {\r
+ scan_int();\r
+ s = -cur_val;\r
+\r
+ if ((cur_val <= 0) || (cur_val > 32768L))\r
+ {\r
+ print_err("Illegal magnification has been changed to 1000");\r
+ help1("The magnification ratio must be between 1 and 32768.");\r
+ int_error(cur_val);\r
+ s = -1000;\r
+ }\r
+ }\r
+ else\r
+ s = -1000;\r
+\r
+ name_in_progress = false;\r
+\r
+ flushable_string = str_ptr - 1;\r
+\r
+ if (trace_flag)\r
+ {\r
+ int i, k1, k2, l1, l2;\r
+ char *sch = log_line;\r
+ k1 = str_start[cur_area];\r
+ k2 = str_start[cur_name];\r
+ l1 = length(cur_area);\r
+ l2 = length(cur_name);\r
+ wterm_cr();\r
+ puts("FONT ");\r
+\r
+ for (i = 0; i < l1; i++)\r
+ {\r
+ *sch++ = str_pool[i + k1];\r
+ }\r
+\r
+ for (i = 0; i < l2; i++)\r
+ {\r
+ *sch++ = str_pool[i + k2];\r
+ }\r
+\r
+ *sch++ = ' ';\r
+ *sch++ = '\0';\r
+ show_line(log_line, 0);\r
+ }\r
+\r
+ for (f = font_base + 1; f < font_ptr; f++)\r
+ {\r
+ if (str_eq_str(font_name[f], cur_name) && str_eq_str(font_area[f], cur_area))\r
+ {\r
+ if (cur_name == flushable_string)\r
+ {\r
+ flush_string();\r
+ cur_name = font_name[f];\r
+ }\r
+\r
+ if (s > 0)\r
+ {\r
+ if (s == font_size[f])\r
+ {\r
+ if (ignore_frozen == 0 || f > frozen_font_ptr)\r
+ {\r
+ if (trace_flag)\r
+ printf("SKIPPING %lld ", s);\r
+\r
+ goto common_ending;\r
+ }\r
+ }\r
+ }\r
+ else if (font_size[f] == xn_over_d(font_dsize[f], - (integer) s, 1000))\r
+ {\r
+ if (ignore_frozen == 0 || f > frozen_font_ptr)\r
+ {\r
+ if (trace_flag)\r
+ printf("SKIPPING %lld ", s);\r
+ goto common_ending;\r
+ }\r
+ }\r
+ }\r
+ }\r
+\r
+ if (trace_flag)\r
+ show_line("READING ", 0);\r
+\r
+ f = read_font_info(u, cur_name, cur_area, s); \r
+\r
+common_ending:\r
+ if (trace_flag)\r
+ printf("NEW FONT %lld ", f);\r
+\r
+ equiv(u) = f;\r
+ eqtb[font_id_base + f] = eqtb[u];\r
+ font_id_text(f) = t;\r
+}\r
+/* sec 1265 */\r
+void new_interaction (void)\r
+{\r
+ print_ln();\r
+ interaction = cur_chr;\r
+\r
+ if (interaction == batch_mode)\r
+ selector = no_print;\r
+ else\r
+ selector = term_only;\r
+\r
+ if (log_opened)\r
+ selector = selector + 2;\r
+}\r
+/* sec 1270 */\r
+void do_assignments (void)\r
+{\r
+ while (true)\r
+ {\r
+ do\r
+ {\r
+ get_x_token();\r
+ }\r
+ while (!((cur_cmd != spacer) && (cur_cmd != relax)));\r
+\r
+ if (cur_cmd <= max_non_prefixed_command)\r
+ return;\r
+\r
+ set_box_allowed = false;\r
+ prefixed_command();\r
+ set_box_allowed = true;\r
+ }\r
+}\r
+/* sec 1275 */\r
+void open_or_close_in (void)\r
+{\r
+ char c;\r
+ char n;\r
+\r
+ c = cur_chr;\r
+ scan_four_bit_int();\r
+ n = cur_val;\r
+\r
+ if (read_open[n] != closed)\r
+ {\r
+ a_close(read_file[n]);\r
+ read_open[n] = closed;\r
+ }\r
+\r
+ if (c != 0)\r
+ {\r
+ scan_optional_equals();\r
+ scan_file_name();\r
+ pack_file_name(cur_name, cur_area, cur_ext);\r
+\r
+ if ((cur_ext != 335) && a_open_in(read_file[n], kpse_tex_format))\r
+ read_open[n] = 1;\r
+ else if ((cur_ext != 785) && (name_length + 5 < file_name_size))\r
+ {\r
+ strncpy((char *) name_of_file + name_length + 1, ".tex ", 5);\r
+ name_length = name_length + 4;\r
+\r
+ if (a_open_in(read_file[n], kpse_tex_format))\r
+ read_open[n] = just_open;\r
+ else\r
+ {\r
+ name_length = name_length - 4;\r
+ name_of_file[name_length + 1] = ' ';\r
+\r
+ if ((cur_ext == 335) && a_open_in(read_file[n], kpse_tex_format))\r
+ read_open[n] = just_open;\r
+ }\r
+ }\r
+ }\r
+}\r
+/* sec 1279 */\r
+void issue_message (void)\r
+{\r
+ char old_setting;\r
+ char c;\r
+ str_number s;\r
+\r
+ c = cur_chr;\r
+ link(garbage) = scan_toks(false, true);\r
+ old_setting = selector;\r
+ selector = new_string;\r
+ token_show(def_ref);\r
+ selector = old_setting;\r
+ flush_list(def_ref);\r
+ str_room(1);\r
+ s = make_string();\r
+\r
+ if (c == 0)\r
+ {\r
+ if (term_offset + length(s) > max_print_line - 2)\r
+ print_ln();\r
+ else if ((term_offset > 0) || (file_offset > 0))\r
+ print_char(' ');\r
+\r
+ slow_print(s);\r
+ update_terminal();\r
+ }\r
+ else\r
+ {\r
+ print_err("");\r
+ slow_print(s);\r
+\r
+ if (err_help != 0)\r
+ use_err_help = true;\r
+ else if (long_help_seen)\r
+ help1("(That was another \\errmessage.)");\r
+ else\r
+ {\r
+ if (interaction < error_stop_mode)\r
+ long_help_seen = true;\r
+\r
+ help4("This error message was generated by an \\errmessage",\r
+ "command, so I can't give any explicit help.",\r
+ "Pretend that you're Hercule Poirot: Examine all clues,",\r
+ "and deduce the truth by order and method.");\r
+ }\r
+\r
+ error();\r
+ use_err_help = false;\r
+ }\r
+\r
+ flush_string();\r
+}\r
+/* sec 1288 */\r
+void shift_case (void)\r
+{\r
+ pointer b;\r
+ pointer p;\r
+ halfword t;\r
+ eight_bits c;\r
+\r
+ b = cur_chr;\r
+ p = scan_toks(false, false);\r
+ p = link(def_ref);\r
+\r
+ while (p != 0)\r
+ {\r
+ t = info(p); \r
+\r
+ if (t < cs_token_flag + single_base)\r
+ {\r
+ c = t % 256;\r
+\r
+ if (equiv(b + c) != 0)\r
+ info(p) = t - c + equiv(b + c);\r
+ }\r
+\r
+ p = link(p);\r
+ }\r
+\r
+ begin_token_list(link(def_ref), 3);\r
+ free_avail(def_ref);\r
+}\r
+/* sec 1293 */\r
+void show_whatever (void)\r
+{\r
+ pointer p;\r
+\r
+ switch (cur_chr)\r
+ {\r
+ case show_lists:\r
+ {\r
+ begin_diagnostic();\r
+ show_activities();\r
+ }\r
+ break;\r
+\r
+ case show_box_code:\r
+ {\r
+ scan_eight_bit_int();\r
+ begin_diagnostic();\r
+ print_nl("> \\box");\r
+ print_int(cur_val);\r
+ print_char('=');\r
+\r
+ if (box(cur_val) == 0)\r
+ prints("void");\r
+ else\r
+ show_box(box(cur_val));\r
+ }\r
+ break;\r
+\r
+ case show_code:\r
+ {\r
+ get_token();\r
+\r
+ if (interaction == error_stop_mode)\r
+ wake_up_terminal();\r
+\r
+ print_nl("> ");\r
+\r
+ if (cur_cs != 0)\r
+ {\r
+ sprint_cs(cur_cs);\r
+ print_char('=');\r
+ }\r
+\r
+ print_meaning();\r
+ goto common_ending;\r
+ }\r
+ break;\r
+\r
+ default:\r
+ {\r
+ p = the_toks();\r
+\r
+ if (interaction == error_stop_mode)\r
+ wake_up_terminal();\r
+\r
+ print_nl("> ");\r
+ token_show(temp_head);\r
+ flush_list(link(temp_head));\r
+ goto common_ending;\r
+ }\r
+ break;\r
+ }\r
+\r
+ end_diagnostic(true);\r
+ print_err("OK");\r
+\r
+ if (selector == term_and_log)\r
+ if (tracing_online <= 0)\r
+ {\r
+ selector = term_only;\r
+ prints(" (see the transcript file)");\r
+ selector = term_and_log;\r
+ }\r
+\r
+common_ending:\r
+\r
+ if (interaction < error_stop_mode)\r
+ {\r
+ help_ptr = 0;\r
+ decr(error_count);\r
+ }\r
+ else if (tracing_online > 0)\r
+ {\r
+ help3("This isn't an error message; I'm just \\showing something.",\r
+ "Type `I\\show...' to show more (e.g., \\show\\cs,",\r
+ "\\showthe\\count10, \\showbox255, \\showlists).");\r
+ }\r
+ else\r
+ {\r
+ help5("This isn't an error message; I'm just \\showing something.",\r
+ "Type `I\\show...' to show more (e.g., \\show\\cs,",\r
+ "\\showthe\\count10, \\showbox255, \\showlists).",\r
+ "And type `I\\tracingonline=1\\show...' to show boxes and",\r
+ "lists on your terminal as well as in the transcript file.");\r
+ }\r
+\r
+ error();\r
+}\r
+/* sec 1349 */\r
+void new_whatsit_(small_number s, small_number w)\r
+{\r
+ pointer p;\r
+\r
+ p = get_node(w);\r
+ type(p) = whatsit_node;\r
+ subtype(p) = s;\r
+ link(tail) = p;\r
+ tail = p;\r
+}\r
+/* sec 1350 */\r
+void new_write_whatsit (small_number w)\r
+{\r
+ new_whatsit(cur_chr, w);\r
+\r
+ if (w != write_node_size)\r
+ scan_four_bit_int();\r
+ else\r
+ {\r
+ scan_int();\r
+\r
+ if (cur_val < 0)\r
+ cur_val = 17;\r
+ else if (cur_val > 15)\r
+ cur_val = 16;\r
+ }\r
+\r
+ write_stream(tail) = cur_val;\r
+}\r
+/* sec 1348 */\r
+void do_extension (void)\r
+{\r
+ integer k;\r
+ pointer p;\r
+\r
+ switch (cur_chr)\r
+ {\r
+ case open_node:\r
+ {\r
+ new_write_whatsit(open_node_size);\r
+ scan_optional_equals();\r
+ scan_file_name();\r
+ open_name(tail) = cur_name;\r
+ open_area(tail) = cur_area;\r
+ open_ext(tail) = cur_ext;\r
+ }\r
+ break;\r
+\r
+ case write_node:\r
+ {\r
+ k = cur_cs;\r
+ new_write_whatsit(write_node_size);\r
+ cur_cs = k;\r
+ p = scan_toks(false, false);\r
+ write_tokens(tail) = def_ref;\r
+ }\r
+ break;\r
+\r
+ case close_node:\r
+ {\r
+ new_write_whatsit(write_node_size);\r
+ write_tokens(tail) = 0;\r
+ }\r
+ break;\r
+\r
+ case special_node:\r
+ {\r
+ new_whatsit(special_node, write_node_size);\r
+ write_stream(tail) = 0;\r
+ p = scan_toks(false, true);\r
+ write_tokens(tail) = def_ref;\r
+ }\r
+ break;\r
+\r
+ case immediate_code:\r
+ {\r
+ get_x_token();\r
+\r
+ if ((cur_cmd == extension) && (cur_chr <= close_node))\r
+ {\r
+ p = tail;\r
+ do_extension();\r
+ out_what(tail);\r
+ flush_node_list(tail);\r
+ tail = p;\r
+ link(p) = 0;\r
+ }\r
+ else\r
+ back_input();\r
+ }\r
+ break;\r
+\r
+ case set_language_code:\r
+ if (abs(mode) != hmode)\r
+ {\r
+ report_illegal_case();\r
+ }\r
+ else\r
+ {\r
+ new_whatsit(language_node, small_node_size);\r
+ scan_int();\r
+\r
+ if (cur_val <= 0)\r
+ clang = 0;\r
+ else if (cur_val > 255)\r
+ clang = 0;\r
+ else\r
+ clang = cur_val;\r
+\r
+ what_lang(tail) = clang;\r
+ what_lhm(tail) = norm_min(left_hyphen_min);\r
+ what_rhm(tail) = norm_min(right_hyphen_min);\r
+ }\r
+ break;\r
+\r
+ default:\r
+ {\r
+ confusion("ext1");\r
+ return;\r
+ }\r
+ break;\r
+ }\r
+}\r
+/* sec 1376 */\r
+void fix_language (void)\r
+{\r
+ /* ASCII_code l; */\r
+ int l;\r
+\r
+ if (language <= 0)\r
+ l = 0; \r
+ else if (language > 255)\r
+ l = 0;\r
+ else\r
+ l = language;\r
+\r
+ if (l != clang)\r
+ {\r
+ new_whatsit(language_node, small_node_size);\r
+ what_lang(tail) = l;\r
+ clang = l;\r
+ what_lhm(tail) = norm_min(left_hyphen_min);\r
+ what_rhm(tail) = norm_min(right_hyphen_min);\r
+ }\r
+}\r
+/* sec 1068 */\r
+void handle_right_brace (void)\r
+{\r
+ pointer p, q;\r
+ scaled d;\r
+ integer f;\r
+\r
+ switch (cur_group)\r
+ {\r
+ case simple_group:\r
+ unsave();\r
+ break;\r
+\r
+ case bottom_level:\r
+ {\r
+ print_err("Too many }'s");\r
+ help2("You've closed more groups than you opened.",\r
+ "Such booboos are generally harmless, so keep going.");\r
+ error();\r
+ }\r
+ break;\r
+\r
+ case semi_simple_group:\r
+ case math_shift_group:\r
+ case math_left_group:\r
+ extra_right_brace();\r
+ break;\r
+\r
+ case hbox_group:\r
+ package(0);\r
+ break;\r
+\r
+ case adjust_hbox_group:\r
+ {\r
+ adjust_tail = adjust_head;\r
+ package(0);\r
+ }\r
+ break;\r
+\r
+ case vbox_group:\r
+ {\r
+ end_graf();\r
+ package(0);\r
+ }\r
+ break;\r
+\r
+ case vtop_group:\r
+ {\r
+ end_graf();\r
+ package(vtop_code);\r
+ }\r
+ break;\r
+\r
+ case insert_group:\r
+ {\r
+ end_graf();\r
+ q = split_top_skip;\r
+ add_glue_ref(q);\r
+ d = split_max_depth;\r
+ f = floating_penalty;\r
+ unsave();\r
+ decr(save_ptr);\r
+ p = vpackage(link(head), 0, 1, max_dimen);\r
+ pop_nest();\r
+\r
+ if (saved(0) < 255)\r
+ {\r
+ tail_append(get_node(ins_node_size));\r
+ type(tail) = ins_node;\r
+ subtype(tail) = saved(0);\r
+ height(tail) = height(p) + depth(p);\r
+ ins_ptr(tail) = list_ptr(p);\r
+ split_top_ptr(tail) = q;\r
+ depth(tail) = d;\r
+ float_cost(tail) = f;\r
+ }\r
+ else\r
+ {\r
+ tail_append(get_node(small_node_size));\r
+ type(tail) = adjust_node;\r
+ subtype(tail) = 0;\r
+ adjust_ptr(tail) = list_ptr(p);\r
+ delete_glue_ref(q);\r
+ }\r
+ free_node(p, box_node_size);\r
+\r
+ if (nest_ptr == 0)\r
+ build_page();\r
+ }\r
+ break;\r
+\r
+ case output_group:\r
+ {\r
+ if ((loc != 0) || ((token_type != output_text) && (token_type != backed_up)))\r
+ {\r
+ print_err("Unbalanced output routine");\r
+ help2("Your sneaky output routine has problematic {'s and/or }'s.",\r
+ "I can't handle that very well; good luck.");\r
+ error();\r
+\r
+ do\r
+ {\r
+ get_token();\r
+ }\r
+ while (!(loc == 0));\r
+ }\r
+\r
+ end_token_list();\r
+ end_graf();\r
+ unsave();\r
+ output_active = false;\r
+ insert_penalties = 0;\r
+\r
+ if (box(255) != 0)\r
+ {\r
+ print_err("Output routine didn't use all of ");\r
+ print_esc("box");\r
+ print_int(255);\r
+ help3("Your \\output commands should empty \\box255,",\r
+ "e.g., by saying `\\shipout\\box255'.",\r
+ "Proceed; I'll discard its present contents.");\r
+ box_error(255);\r
+ }\r
+\r
+ if (tail != head)\r
+ {\r
+ link(page_tail) = link(head);\r
+ page_tail = tail;\r
+ }\r
+\r
+ if (link(page_head) != 0)\r
+ {\r
+ if (link(contrib_head) == 0)\r
+ nest[0].tail_field = page_tail;\r
+\r
+ link(page_tail) = link(contrib_head);\r
+ link(contrib_head) = link(page_head);\r
+ link(page_head) = 0;\r
+ page_tail = page_head;\r
+ }\r
+\r
+ pop_nest();\r
+ build_page();\r
+ }\r
+ break;\r
+\r
+ case disc_group:\r
+ build_discretionary();\r
+ break;\r
+\r
+ case align_group:\r
+ {\r
+ back_input();\r
+ cur_tok = cs_token_flag + frozen_cr;\r
+ print_err("Missing ");\r
+ print_esc("cr");\r
+ prints("inserted");\r
+ help1("I'm guessing that you meant to end an alignment here.");\r
+ ins_error();\r
+ }\r
+ break;\r
+\r
+ case no_align_group:\r
+ {\r
+ end_graf();\r
+ unsave();\r
+ align_peek();\r
+ }\r
+ break;\r
+\r
+ case vcenter_group:\r
+ {\r
+ end_graf();\r
+ unsave();\r
+ save_ptr = save_ptr - 2;\r
+ p = vpackage(link(head), saved(1), saved(0), max_dimen);\r
+ pop_nest();\r
+ tail_append(new_noad());\r
+ type(tail) = vcenter_noad;\r
+ math_type(nucleus(tail)) = sub_box;\r
+ info(nucleus(tail)) = p;\r
+ }\r
+ break;\r
+\r
+ case math_choice_group:\r
+ build_choices();\r
+ break;\r
+\r
+ case math_group:\r
+ {\r
+ unsave();\r
+ decr(save_ptr);\r
+ math_type(saved(0)) = sub_mlist;\r
+ p = fin_mlist(0);\r
+ info(saved(0)) = p;\r
+\r
+ if (p != 0)\r
+ if (link(p) == 0)\r
+ if (type(p) == ord_noad)\r
+ {\r
+ if (math_type(subscr(p)) == 0)\r
+ if (math_type(supscr(p)) == 0)\r
+ {\r
+ mem[saved(0)].hh = mem[nucleus(p)].hh;\r
+ free_node(p, noad_size);\r
+ }\r
+ }\r
+ else if (type(p) == accent_noad)\r
+ if (saved(0) == nucleus(tail))\r
+ if (type(tail) == ord_noad)\r
+ {\r
+ q = head;\r
+\r
+ while (link(q) != tail)\r
+ q = link(q);\r
+\r
+ link(q) = p;\r
+ free_node(tail, noad_size);\r
+ tail = p;\r
+ }\r
+ }\r
+ break;\r
+ default:\r
+ {\r
+ confusion("rightbrace");\r
+ return;\r
+ }\r
+ break;\r
+ }\r
+}\r
+/* sec 1030 */\r
+void main_control (void) \r
+{\r
+ integer t;\r
+ boolean bSuppress;\r
+\r
+ if (every_job != 0)\r
+ begin_token_list(every_job, every_job_text);\r
+\r
+big_switch:\r
+ get_x_token();\r
+\r
+reswitch:\r
+ if (interrupt != 0)\r
+ if (OK_to_interrupt)\r
+ {\r
+ back_input();\r
+ check_interrupt();\r
+ goto big_switch;\r
+ }\r
+\r
+#ifdef DEBUG\r
+ if (panicking)\r
+ check_mem(false);\r
+#endif\r
+\r
+ if (tracing_commands > 0)\r
+ show_cur_cmd_chr();\r
+\r
+ switch (abs(mode) + cur_cmd)\r
+ {\r
+ case hmode + letter:\r
+ case hmode + other_char:\r
+ case hmode + char_given:\r
+ goto main_loop;\r
+ break;\r
+\r
+ case hmode + char_num:\r
+ {\r
+ scan_char_num();\r
+ cur_chr = cur_val;\r
+ goto main_loop;\r
+ }\r
+ break;\r
+\r
+ case hmode + no_boundary:\r
+ {\r
+ get_x_token();\r
+\r
+ if ((cur_cmd == letter) || (cur_cmd == other_char) ||\r
+ (cur_cmd == char_given) || (cur_cmd == char_num))\r
+ cancel_boundary = true;\r
+ goto reswitch;\r
+ }\r
+ break;\r
+\r
+ case hmode + spacer:\r
+ if (space_factor == 1000)\r
+ goto append_normal_space;\r
+ else\r
+ app_space();\r
+ break;\r
+\r
+ case hmode + ex_space:\r
+ case mmode + ex_space:\r
+ goto append_normal_space;\r
+ break;\r
+\r
+ case any_mode(relax):\r
+ case vmode + spacer:\r
+ case mmode + spacer:\r
+ case mmode + no_boundary:\r
+ do_nothing();\r
+ break;\r
+\r
+ case any_mode(ignore_spaces):\r
+ {\r
+ do\r
+ {\r
+ get_x_token();\r
+ }\r
+ while (!(cur_cmd != spacer));\r
+ goto reswitch;\r
+ }\r
+ break;\r
+\r
+ case vmode + stop:\r
+ if (its_all_over())\r
+ return;\r
+ break;\r
+\r
+ case vmode + vmove:\r
+ case hmode + hmove:\r
+ case mmode + hmove:\r
+ case any_mode(last_item):\r
+ case vmode + vadjust:\r
+ case vmode + ital_corr:\r
+ case non_math(eq_no):\r
+ case any_mode(mac_param):\r
+ report_illegal_case();\r
+ break;\r
+\r
+ case non_math(sup_mark):\r
+ case non_math(sub_mark):\r
+ case non_math(math_char_num):\r
+ case non_math(math_given):\r
+ case non_math(math_comp):\r
+ case non_math(delim_num):\r
+ case non_math(left_right):\r
+ case non_math(above):\r
+ case non_math(radical):\r
+ case non_math(math_style):\r
+ case non_math(math_choice):\r
+ case non_math(vcenter):\r
+ case non_math(non_script):\r
+ case non_math(mkern):\r
+ case non_math(limit_switch):\r
+ case non_math(mskip):\r
+ case non_math(math_accent):\r
+ case mmode + endv:\r
+ case mmode + par_end:\r
+ case mmode + stop:\r
+ case mmode + vskip:\r
+ case mmode + un_vbox:\r
+ case mmode + valign:\r
+ case mmode + hrule:\r
+ insert_dollar_sign();\r
+ break;\r
+\r
+ case vmode + hrule:\r
+ case hmode + vrule:\r
+ case mmode + vrule:\r
+ {\r
+ tail_append(scan_rule_spec());\r
+\r
+ if (abs(mode) == vmode)\r
+ prev_depth = ignore_depth;\r
+ else if (abs(mode) == hmode)\r
+ space_factor = 1000;\r
+ }\r
+ break;\r
+\r
+ case vmode + vskip:\r
+ case hmode + hskip:\r
+ case mmode + hskip:\r
+ case mmode + mskip:\r
+ append_glue();\r
+ break;\r
+\r
+ case any_mode(kern):\r
+ case mmode + mkern:\r
+ append_kern();\r
+ break;\r
+\r
+ case non_math(left_brace):\r
+ new_save_level(simple_group);\r
+ break;\r
+\r
+ case any_mode(begin_group):\r
+ new_save_level(semi_simple_group);\r
+ break;\r
+\r
+ case any_mode(end_group):\r
+ if (cur_group == semi_simple_group)\r
+ unsave();\r
+ else\r
+ off_save();\r
+ break;\r
+\r
+ case any_mode(right_brace):\r
+ handle_right_brace();\r
+ break;\r
+\r
+ case vmode + hmove:\r
+ case hmode + vmove:\r
+ case mmode + vmove:\r
+ {\r
+ t = cur_chr;\r
+ scan_dimen(false, false, false);\r
+\r
+ if (t == 0)\r
+ scan_box(cur_val);\r
+ else\r
+ scan_box(- (integer) cur_val);\r
+ }\r
+ break;\r
+\r
+ case any_mode(leader_ship):\r
+ scan_box(leader_flag - a_leaders + cur_chr);\r
+ break;\r
+\r
+ case any_mode(make_box):\r
+ begin_box(0);\r
+ break;\r
+\r
+ case vmode + start_par:\r
+ new_graf(cur_chr > 0);\r
+ break;\r
+\r
+ case vmode + letter:\r
+ case vmode + other_char:\r
+ case vmode + char_num:\r
+ case vmode + char_given:\r
+ case vmode + math_shift:\r
+ case vmode + un_hbox:\r
+ case vmode + vrule:\r
+ case vmode + accent:\r
+ case vmode + discretionary:\r
+ case vmode + hskip:\r
+ case vmode + valign:\r
+ case vmode + ex_space:\r
+ case vmode + no_boundary:\r
+ {\r
+ back_input();\r
+ new_graf(true);\r
+ }\r
+ break;\r
+\r
+ case hmode + start_par:\r
+ case mmode + start_par:\r
+ indent_in_hmode();\r
+ break;\r
+\r
+ case vmode + par_end:\r
+ {\r
+ normal_paragraph();\r
+\r
+ if (mode > 0)\r
+ build_page();\r
+ }\r
+ break;\r
+\r
+ case hmode + par_end:\r
+ {\r
+ if (align_state < 0)\r
+ off_save();\r
+\r
+ end_graf();\r
+\r
+ if (mode == 1)\r
+ build_page();\r
+ }\r
+ break;\r
+\r
+ case hmode + stop:\r
+ case hmode + vskip:\r
+ case hmode + hrule:\r
+ case hmode + un_vbox:\r
+ case hmode + halign:\r
+ head_for_vmode();\r
+ break;\r
+\r
+ case any_mode(insert):\r
+ case hmode + vadjust:\r
+ case mmode + vadjust:\r
+ begin_insert_or_adjust();\r
+ break;\r
+\r
+ case any_mode(mark):\r
+ make_mark();\r
+ break;\r
+\r
+ case any_mode(break_penalty):\r
+ append_penalty();\r
+ break;\r
+\r
+ case any_mode(remove_item):\r
+ delete_last();\r
+ break;\r
+\r
+ case vmode + un_vbox:\r
+ case hmode + un_hbox:\r
+ case mmode + un_hbox:\r
+ unpackage();\r
+ break;\r
+\r
+ case hmode + ital_corr:\r
+ append_italic_correction();\r
+ break;\r
+\r
+ case mmode + ital_corr:\r
+ tail_append(new_kern(0));\r
+ break;\r
+\r
+ case hmode + discretionary:\r
+ case mmode + discretionary:\r
+ append_discretionary();\r
+ break;\r
+\r
+ case hmode + accent:\r
+ make_accent();\r
+ break;\r
+\r
+ case any_mode(car_ret):\r
+ case any_mode(tab_mark):\r
+ align_error();\r
+ break;\r
+\r
+ case any_mode(no_align):\r
+ noalign_error();\r
+ break;\r
+\r
+ case any_mode(omit):\r
+ omit_error();\r
+ break;\r
+\r
+ case vmode + halign:\r
+ case hmode + valign:\r
+ init_align();\r
+ break;\r
+\r
+ case mmode + halign:\r
+ if (privileged ())\r
+ if (cur_group == math_shift_group)\r
+ init_align();\r
+ else\r
+ off_save();\r
+ break;\r
+\r
+ case vmode + endv:\r
+ case hmode + endv:\r
+ do_endv();\r
+ break;\r
+\r
+ case any_mode(end_cs_name):\r
+ cs_error();\r
+ break;\r
+\r
+ case hmode + math_shift:\r
+ init_math();\r
+ break;\r
+\r
+ case mmode + eq_no:\r
+ if (privileged ())\r
+ if (cur_group == math_shift_group)\r
+ start_eq_no();\r
+ else\r
+ off_save();\r
+ break;\r
+\r
+ case mmode + left_brace:\r
+ {\r
+ tail_append(new_noad());\r
+ back_input();\r
+ scan_math(nucleus(tail));\r
+ }\r
+ break;\r
+\r
+ case mmode + letter:\r
+ case mmode + other_char:\r
+ case mmode + char_given:\r
+ set_math_char(math_code(cur_chr));\r
+ break;\r
+\r
+ case mmode + char_num:\r
+ {\r
+ scan_char_num();\r
+ cur_chr = cur_val;\r
+ set_math_char(math_code(cur_chr));\r
+ }\r
+ break;\r
+\r
+ case mmode + math_char_num:\r
+ {\r
+ scan_fifteen_bit_int();\r
+ set_math_char(cur_val);\r
+ }\r
+ break;\r
+\r
+ case mmode + math_given:\r
+ set_math_char(cur_chr);\r
+ break;\r
+\r
+ case mmode + delim_num:\r
+ {\r
+ scan_twenty_seven_bit_int();\r
+ set_math_char(cur_val / 4096);\r
+ }\r
+ break;\r
+\r
+ case mmode + math_comp:\r
+ {\r
+ tail_append(new_noad());\r
+ type(tail) = cur_chr;\r
+ scan_math(nucleus(tail));\r
+ }\r
+ break;\r
+\r
+ case mmode + limit_switch:\r
+ math_limit_switch();\r
+ break;\r
+\r
+ case mmode + radical:\r
+ math_radical();\r
+ break;\r
+\r
+ case mmode + accent:\r
+ case mmode + math_accent:\r
+ math_ac();\r
+ break;\r
+\r
+ case mmode + vcenter:\r
+ {\r
+ scan_spec(vcenter_group, false);\r
+ normal_paragraph();\r
+ push_nest();\r
+ mode = -1;\r
+ prev_depth = ignore_depth;\r
+\r
+ if (every_vbox != 0)\r
+ begin_token_list(every_vbox, every_vbox_text);\r
+ }\r
+ break;\r
+\r
+ case mmode + math_style:\r
+ tail_append(new_style(cur_chr));\r
+ break;\r
+\r
+ case mmode + non_script:\r
+ {\r
+ tail_append(new_glue(zero_glue));\r
+ subtype(tail) = cond_math_glue;\r
+ }\r
+ break;\r
+\r
+ case mmode + math_choice:\r
+ append_choices();\r
+ break;\r
+\r
+ case mmode + sub_mark:\r
+ case mmode + sup_mark:\r
+ sub_sup();\r
+ break;\r
+\r
+ case mmode + above:\r
+ math_fraction();\r
+ break;\r
+\r
+ case mmode + left_right:\r
+ math_left_right();\r
+ break;\r
+\r
+ case mmode + math_shift:\r
+ if (cur_group == math_shift_group)\r
+ after_math();\r
+ else\r
+ off_save();\r
+ break;\r
+\r
+ case any_mode(toks_register):\r
+ case any_mode(assign_toks):\r
+ case any_mode(assign_int):\r
+ case any_mode(assign_dimen):\r
+ case any_mode(assign_glue):\r
+ case any_mode(assign_mu_glue):\r
+ case any_mode(assign_font_dimen):\r
+ case any_mode(assign_font_int):\r
+ case any_mode(set_aux):\r
+ case any_mode(set_prev_graf):\r
+ case any_mode(set_page_dimen):\r
+ case any_mode(set_page_int):\r
+ case any_mode(set_box_dimen):\r
+ case any_mode(set_shape):\r
+ case any_mode(def_code):\r
+ case any_mode(def_family):\r
+ case any_mode(set_font):\r
+ case any_mode(def_font):\r
+ case any_mode(tex_register):\r
+ case any_mode(advance):\r
+ case any_mode(multiply):\r
+ case any_mode(divide):\r
+ case any_mode(prefix):\r
+ case any_mode(let):\r
+ case any_mode(shorthand_def):\r
+ case any_mode(read_to_cs):\r
+ case any_mode(def):\r
+ case any_mode(set_box):\r
+ case any_mode(hyph_data):\r
+ case any_mode(set_interaction):\r
+ prefixed_command();\r
+ break;\r
+\r
+ case any_mode(after_assignment):\r
+ {\r
+ get_token();\r
+ after_token = cur_tok;\r
+ }\r
+ break;\r
+\r
+ case any_mode(after_group):\r
+ {\r
+ get_token();\r
+ save_for_after(cur_tok);\r
+ }\r
+ break;\r
+\r
+ case any_mode(in_stream):\r
+ open_or_close_in();\r
+ break;\r
+\r
+ case any_mode(message):\r
+ issue_message();\r
+ break;\r
+\r
+ case any_mode(case_shift):\r
+ shift_case();\r
+ break;\r
+\r
+ case any_mode(xray):\r
+ show_whatever();\r
+ break;\r
+\r
+ case any_mode(extension):\r
+ do_extension();\r
+ break;\r
+ }\r
+\r
+ goto big_switch;\r
+\r
+main_loop:\r
+ adjust_space_factor();\r
+ main_f = cur_font;\r
+ bchar = font_bchar[main_f];\r
+ false_bchar = font_false_bchar[main_f];\r
+\r
+ if (mode > 0)\r
+ if (language != clang)\r
+ fix_language();\r
+\r
+ fast_get_avail(lig_stack);\r
+ font(lig_stack) = main_f;\r
+ cur_l = cur_chr;\r
+ character(lig_stack) = cur_l;\r
+ cur_q = tail;\r
+\r
+ if (cancel_boundary)\r
+ {\r
+ cancel_boundary = false;\r
+ main_k = non_address;\r
+ }\r
+ else\r
+ main_k = bchar_label[main_f];\r
+\r
+ if (main_k == non_address)\r
+ goto main_loop_move_2;\r
+\r
+ cur_r = cur_l;\r
+ cur_l = non_char;\r
+ goto main_lig_loop_1;\r
+\r
+main_loop_wrapup: \r
+ wrapup(rt_hit);\r
+\r
+main_loop_move:\r
+ if (lig_stack == 0)\r
+ goto reswitch;\r
+\r
+ cur_q = tail;\r
+ cur_l = character(lig_stack);\r
+\r
+main_loop_move_1:\r
+ if (!is_char_node(lig_stack))\r
+ goto main_loop_move_lig;\r
+\r
+main_loop_move_2:\r
+ if ((cur_chr < font_bc[main_f]) || (cur_chr > font_ec[main_f]))\r
+ {\r
+ char_warning(main_f, cur_chr);\r
+ free_avail(lig_stack);\r
+ goto big_switch;\r
+ }\r
+\r
+ main_i = char_info(main_f, cur_l);\r
+\r
+ if (!char_exists(main_i))\r
+ {\r
+ char_warning(main_f, cur_chr);\r
+ free_avail(lig_stack);\r
+ goto big_switch; \r
+ }\r
+\r
+ link(tail) = lig_stack;\r
+ tail = lig_stack;\r
+\r
+main_loop_lookahead:\r
+ get_next();\r
+\r
+ if (cur_cmd == letter)\r
+ goto main_loop_lookahead_1;\r
+\r
+ if (cur_cmd == other_char)\r
+ goto main_loop_lookahead_1;\r
+\r
+ if (cur_cmd == char_given)\r
+ goto main_loop_lookahead_1;\r
+\r
+ x_token();\r
+\r
+ if (cur_cmd == letter)\r
+ goto main_loop_lookahead_1;\r
+\r
+ if (cur_cmd == other_char)\r
+ goto main_loop_lookahead_1;\r
+\r
+ if (cur_cmd == char_given)\r
+ goto main_loop_lookahead_1;\r
+\r
+ if (cur_cmd == char_num)\r
+ {\r
+ scan_char_num();\r
+ cur_chr = cur_val;\r
+ goto main_loop_lookahead_1;\r
+ }\r
+\r
+ if (cur_cmd == no_boundary)\r
+ bchar = non_char;\r
+\r
+ cur_r = bchar;\r
+ lig_stack = 0;\r
+ goto main_lig_loop;\r
+\r
+main_loop_lookahead_1:\r
+ adjust_space_factor();\r
+ fast_get_avail(lig_stack);\r
+ font(lig_stack) = main_f;\r
+ cur_r = cur_chr;\r
+ character(lig_stack) = cur_r;\r
+\r
+ if (cur_r == false_bchar)\r
+ cur_r = non_char;\r
+\r
+main_lig_loop:\r
+ if (char_tag(main_i) != lig_tag)\r
+ goto main_loop_wrapup;\r
+\r
+ if (cur_r == non_char)\r
+ goto main_loop_wrapup;\r
+\r
+ main_k = lig_kern_start(main_f, main_i);\r
+ main_j = font_info[main_k].qqqq;\r
+\r
+ if (skip_byte(main_j) <= stop_flag)\r
+ goto main_lig_loop_2;\r
+\r
+ main_k = lig_kern_restart(main_f, main_j);\r
+\r
+main_lig_loop_1:\r
+ main_j = font_info[main_k].qqqq;\r
+\r
+main_lig_loop_2:\r
+ bSuppress = false;\r
+\r
+ if (suppress_f_ligs && next_char(main_j) == cur_r && op_byte(main_j) == no_tag)\r
+ {\r
+ if (cur_l == 'f')\r
+ bSuppress = true;\r
+ }\r
+\r
+ if (next_char(main_j) == cur_r && bSuppress == false)\r
+ if (skip_byte(main_j) <= stop_flag)\r
+ {\r
+ if (op_byte(main_j) >= kern_flag)\r
+ {\r
+ wrapup(rt_hit);\r
+ tail_append(new_kern(char_kern(main_f, main_j)));\r
+ goto main_loop_move;\r
+ }\r
+\r
+ if (cur_l == non_char)\r
+ lft_hit = true;\r
+ else if (lig_stack == 0)\r
+ rt_hit = true;\r
+\r
+ check_interrupt();\r
+\r
+ switch (op_byte(main_j))\r
+ {\r
+ case 1:\r
+ case 5:\r
+ {\r
+ cur_l = rem_byte(main_j);\r
+ main_i = char_info(main_f, cur_l);\r
+ ligature_present = true;\r
+ }\r
+ break;\r
+ case 2:\r
+ case 6:\r
+ {\r
+ cur_r = rem_byte(main_j);\r
+\r
+ if (lig_stack == 0)\r
+ {\r
+ lig_stack = new_lig_item(cur_r);\r
+ bchar = non_char;\r
+ }\r
+ else if (is_char_node(lig_stack))\r
+ {\r
+ main_p = lig_stack;\r
+ lig_stack = new_lig_item(cur_r);\r
+ lig_ptr(lig_stack) = main_p;\r
+ }\r
+ else\r
+ character(lig_stack) = cur_r;\r
+ }\r
+ break;\r
+ case 3:\r
+ {\r
+ cur_r = rem_byte(main_j);\r
+ main_p = lig_stack;\r
+ lig_stack = new_lig_item(cur_r);\r
+ link(lig_stack) = main_p;\r
+ }\r
+ break;\r
+ case 7:\r
+ case 11:\r
+ {\r
+ wrapup(false);\r
+ cur_q = tail;\r
+ cur_l = rem_byte(main_j);\r
+ main_i = char_info(main_f, cur_l);\r
+ ligature_present = true;\r
+ }\r
+ break;\r
+ default:\r
+ {\r
+ cur_l = rem_byte(main_j);\r
+ ligature_present = true;\r
+ \r
+ if (lig_stack == 0)\r
+ goto main_loop_wrapup;\r
+ else\r
+ goto main_loop_move_1;\r
+ }\r
+ break;\r
+ }\r
+\r
+ if (op_byte(main_j) > 4)\r
+ if (op_byte(main_j) != 7)\r
+ goto main_loop_wrapup;\r
+\r
+ if (cur_l < non_char)\r
+ goto main_lig_loop;\r
+\r
+ main_k = bchar_label[main_f];\r
+ goto main_lig_loop_1;\r
+ }\r
+\r
+ if (skip_byte(main_j) == 0)\r
+ incr(main_k);\r
+ else\r
+ {\r
+ if (skip_byte(main_j) >= stop_flag)\r
+ goto main_loop_wrapup;\r
+\r
+ main_k = main_k + skip_byte(main_j) + 1;\r
+ }\r
+\r
+ goto main_lig_loop_1;\r
+\r
+main_loop_move_lig:\r
+ main_p = lig_ptr(lig_stack);\r
+\r
+ if (main_p != 0)\r
+ tail_append(main_p);\r
+\r
+ temp_ptr = lig_stack;\r
+ lig_stack = link(temp_ptr);\r
+ free_node(temp_ptr, small_node_size);\r
+ main_i = char_info(main_f, cur_l);\r
+ ligature_present = true;\r
+\r
+ if (lig_stack == 0)\r
+ if (main_p != 0)\r
+ goto main_loop_lookahead;\r
+ else\r
+ cur_r = bchar;\r
+ else\r
+ cur_r = character(lig_stack);\r
+\r
+ goto main_lig_loop;\r
+\r
+append_normal_space:\r
+ if (space_skip == 0)\r
+ {\r
+ {\r
+ main_p = font_glue[cur_font];\r
+\r
+ if (main_p == 0)\r
+ {\r
+ main_p = new_spec(zero_glue);\r
+ main_k = param_base[cur_font] + space_code;\r
+ width(main_p) = font_info[main_k].cint;\r
+ stretch(main_p) = font_info[main_k + 1].cint;\r
+ shrink(main_p) = font_info[main_k + 2].cint;\r
+ font_glue[cur_font] = main_p;\r
+ }\r
+ }\r
+\r
+ temp_ptr = new_glue(main_p);\r
+ }\r
+ else\r
+ temp_ptr = new_param_glue(space_skip_code);\r
+\r
+ link(tail) = temp_ptr;\r
+ tail = temp_ptr;\r
+\r
+ goto big_switch;\r
+}
\ No newline at end of file
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