aboutsummaryrefslogtreecommitdiff
path: root/src/hyper/parse.pamphlet
diff options
context:
space:
mode:
authordos-reis <gdr@axiomatics.org>2007-08-14 05:14:52 +0000
committerdos-reis <gdr@axiomatics.org>2007-08-14 05:14:52 +0000
commitab8cc85adde879fb963c94d15675783f2cf4b183 (patch)
treec202482327f474583b750b2c45dedfc4e4312b1d /src/hyper/parse.pamphlet
downloadopen-axiom-ab8cc85adde879fb963c94d15675783f2cf4b183.tar.gz
Initial population.
Diffstat (limited to 'src/hyper/parse.pamphlet')
-rw-r--r--src/hyper/parse.pamphlet947
1 files changed, 947 insertions, 0 deletions
diff --git a/src/hyper/parse.pamphlet b/src/hyper/parse.pamphlet
new file mode 100644
index 00000000..c685dd38
--- /dev/null
+++ b/src/hyper/parse.pamphlet
@@ -0,0 +1,947 @@
+\documentclass{article}
+\usepackage{axiom}
+\begin{document}
+\title{\$SPAD/src/parse}
+\author{The Axiom Team}
+\maketitle
+\begin{abstract}
+\end{abstract}
+\eject
+\tableofcontents
+\eject
+\section{parse.h}
+<<parse.h>>=
+<<license>>
+#ifndef _PARSE_H_
+#define _PARSE_H_ 1
+
+#include "axiom-c-macros.h"
+#include "hterror.h"
+
+#ifdef SUNplatform
+#include <sys/types.h>
+#endif
+
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <sys/errno.h>
+#include <ctype.h>
+#include "hyper.h"
+
+#include <setjmp.h>
+
+extern jmp_buf jmpbuf;
+extern int vbuff;
+
+extern TextNode *cur_spadcom; /* spad command being parsed *** */
+extern TextNode *curr_node;
+extern long page_start_fpos;/* tells the character position of the start
+ * of the page, needed to find the current
+ * position when restoring the scanner */
+
+/*
+ * Default sizes of hash tables
+ */
+
+#define LinkHashSize 25
+#define DependHashSize 20
+
+extern HashTable *gLinkHashTable; /* the hash table of active link windows */
+
+/*
+ * Flags and defines for the modes the parser can be in
+ */
+
+#define AllMode 0
+#define NoVerticalMode 1
+#define SimpleMode 2
+
+extern short int gParserMode;
+
+/*
+ * Flags and defines for telling us what part of the page is being parsed.
+ */
+
+extern short int gParserRegion;
+extern short int gStringValueOk;
+extern boolean gEndedPage;
+
+extern int line_number;
+
+/*
+ * Things for handling macro parameters
+ */
+
+
+
+extern ParameterList parameters;
+
+
+/*
+ * The error buffer
+ */
+
+extern char ebuffer[];
+
+#endif
+@
+\section{parse.c}
+<<parse.c>>=
+#define _PARSE_C
+#include "useproto.h"
+#include "debug.h"
+
+#include "parse.h"
+#include "parse-aux.h"
+#include "parse-paste.h"
+#include "parse-types.h"
+#include "lex.h"
+#include "mem.h"
+#include "extent.h"
+#include "event.h"
+#include "display.h"
+#include "group.h"
+#include "scrollbar.h"
+#include "titlebar.h"
+
+#include "all_hyper_proto.H1"
+
+
+
+TextNode *curr_node; /* current node being parsed. It is to be the
+ * next one filled */
+HashTable *gLinkHashTable; /* the hash table of active link windows */
+TextNode *cur_spadcom; /* The current AXIOM command */
+
+short int gParserMode; /* Parser mode flag */
+short int gParserRegion; /* Parser Region flag scrolling etc */
+short int gStringValueOk; /* is a string or box value ok */
+boolean gEndedPage;
+
+extern int example_number; /* sequence example number */
+
+
+int ret_val; /* The return value from get_token */
+
+HyperDocPage *cur_page;
+
+char *replace_page; /* true if dynamic page is link to static one */
+
+/*
+ * These routines are used for storing an restoring the parser mode. When
+ * I start to parse from string, or from a macro, I need to restore the
+ * parser mode and region once done. These routines do that
+ *
+ */
+
+typedef struct mr_stack {
+ /** The structure for storing parser mode and region **/
+ short int fParserMode;
+ short int fParserRegion;
+ struct mr_stack *fNext;
+} MR_Stack;
+
+MR_Stack *top_mr_stack = NULL; /** Declaration for the stack **/
+
+static void
+Push_MR(void)
+{
+ MR_Stack *newStackItem = (MR_Stack *) halloc(sizeof(MR_Stack), "Mode Region Stack");
+
+ newStackItem->fParserMode = gParserMode;
+ newStackItem->fParserRegion = gParserRegion;
+ newStackItem->fNext = top_mr_stack;
+ top_mr_stack = newStackItem;
+}
+
+static void
+Pop_MR(void)
+{
+ MR_Stack *old = top_mr_stack;
+
+ if (old == NULL) {
+ fprintf(stderr, "(HyperDoc) Parser Error: Tried to pop empty MR Stack\n");
+ exit(-1);
+ }
+ else {
+ gParserMode = old->fParserMode;
+ gParserRegion = old->fParserRegion;
+ top_mr_stack = old->fNext;
+ free(old);
+ }
+}
+
+void
+load_page(HyperDocPage *page)
+{
+ if (page->type == UnloadedPageType) {
+ HyperDocPage *new_page;
+ init_scanner();
+ new_page = format_page((UnloadedPage *)page);
+ gWindow->page = new_page;
+ /* free(page); */
+ page = new_page;
+ }
+}
+
+HyperDocPage *formatpage;
+
+/* Display a HyperDoc page with the given name, parsing it if needed */
+
+void
+display_page(HyperDocPage *page)
+{
+ HyperDocPage *new_page;
+
+ XUnmapSubwindows(gXDisplay, gWindow->fMainWindow);
+ XUnmapSubwindows(gXDisplay, gWindow->fScrollWindow);
+ XFlush(gXDisplay);
+
+ if (setjmp(jmpbuf)) {
+
+ /*
+ * since I did not finish formatting the page, let me get rid of what
+ * I had
+ */
+ free_page(formatpage);
+ /* Replace the buggy page with what I started with */
+ hash_replace(gWindow->fPageHashTable, (char *)page, formatpage->name);
+ if (!strcmp(formatpage->name, "ErrorPage")) {
+ fprintf(stderr, "(HyperDoc) Oops the error page is buggy\n");
+ exit(-1);
+ }
+ gWindow->page = page = (HyperDocPage *) hash_find(gWindow->fPageHashTable, "ErrorPage");
+ if (page == NULL) {
+ fprintf(stderr, "(HyperDoc) No error page found, exiting\n");
+ exit(-1);
+ }
+ reset_connection();
+ }
+ if (page->type == UnloadedPageType || page->type == ErrorPage) {
+ /* Gack! (page should be a union!) */
+ init_scanner();
+ new_page = format_page((UnloadedPage *)page);
+ gWindow->page = new_page;
+ /* free(page); */
+ page = new_page;
+ }
+ show_page(page);
+}
+
+
+/* Parse a given HyperDoc Page, from the top */
+
+static HyperDocPage *
+format_page(UnloadedPage *ulpage)
+{
+ /*int ret_val;*/
+ HyperDocPage *page = alloc_page(ulpage->name);
+
+ /*
+ * In case of an error I will have to get at this page so I can free the
+ * waisted memory
+ */
+ formatpage = page;
+ page->type = Normal;
+ hash_replace(gWindow->fPageHashTable, (char *)page, ulpage->name);
+
+ cfile = find_fp(ulpage->fpos);
+
+
+ page->filename = alloc_string(ulpage->fpos.name);
+ parse_page(page);
+ return page;
+}
+
+/* parse the HyperDoc statements in the given string */
+
+void
+parse_from_string(char *str)
+{
+ save_scanner_state();
+ last_ch = NoChar;
+ last_token = 0;
+ input_string = str;
+ input_type = FromString;
+ parse_HyperDoc();
+ restore_scanner_state();
+}
+
+static void
+parse_title(HyperDocPage *page)
+{
+ TextNode *node;
+
+ Push_MR();
+ gParserRegion = Title;
+ get_expected_token(Lbrace);
+ node = alloc_node();
+ page->title = node;
+ node->type = Titlenode;
+ node->next = alloc_node();
+ node = node->next;
+ node->type = Center;
+ node->next = alloc_node();
+ curr_node = node->next;
+ parse_HyperDoc();
+ curr_node->type = Endcenter;
+ curr_node->next = alloc_node();
+ curr_node = curr_node->next;
+ curr_node->type = Endtitle;
+ curr_node->next = NULL;
+ if (gNeedIconName) {
+ char *title = print_to_string(page->title);
+
+ XSetIconName(gXDisplay, gWindow->fMainWindow, title);
+ gNeedIconName = 0;
+ }
+ if (token.type != Rbrace) {
+ fprintf(stderr, "(HyperDoc) Parse title was expecting a closing brace\n");
+ print_page_and_filename();
+ jump();
+ }
+ linkTitleBarWindows();
+ Pop_MR();
+}
+
+static void
+parse_header(HyperDocPage *page)
+{
+ TextNode *node;
+
+ Push_MR();
+ gParserRegion = Header;
+ node = alloc_node();
+ page->header = node;
+ node->type = Headernode;
+ node->next = alloc_node();
+ curr_node = node->next;
+ parse_HyperDoc();
+}
+
+/*
+ * parse a page from the top level
+ */
+
+static void
+init_parse_page(HyperDocPage *page)
+{
+ gEndedPage = gInDesc = gStringValueOk = gInIf =
+ gInButton = gInOptional = gInVerbatim = gInPaste = gInItems =
+ gInSpadsrc = FALSE;
+ example_number = 1;
+ cur_page = page;
+ gParserMode = AllMode;
+ /* Now I should set the input list to be null */
+ free_input_list(page->input_list);
+ page->input_list = page->current_item = NULL;
+
+ init_top_group();
+ clear_be_stack();
+
+ cur_spadcom = NULL;
+ gLinkHashTable = page->fLinkHashTable;
+ hash_init(
+ gLinkHashTable,
+ LinkHashSize,
+ (EqualFunction) window_equal,
+ (HashcodeFunction) window_code);
+ gPageBeingParsed = page;
+
+}
+
+void
+init_parse_patch(HyperDocPage *page)
+{
+ gEndedPage = gInDesc = gStringValueOk = gInIf =
+ gInButton = gInOptional = gInVerbatim = gInPaste = gInItems =
+ gInSpadsrc = FALSE;
+ gParserMode = AllMode;
+ gParserRegion = Scrolling;
+
+ init_top_group();
+ clear_be_stack();
+
+ cur_spadcom = NULL;
+ gLinkHashTable = page->fLinkHashTable;
+ gPageBeingParsed = page;
+}
+
+#define end_page(t) ((t == Page || t == NewCommand ||t == Endpage)?1:0)
+
+static void
+parse_page(HyperDocPage *page)
+{
+ init_parse_page(page);
+
+ /* Get the name of the page */
+
+ get_expected_token(Page);
+ get_expected_token(Lbrace);
+ get_expected_token(Word);
+ if (page->name == NULL)
+ page->name = alloc_string(token.id);
+ get_expected_token(Rbrace);
+ /* parse the title */
+ gWindow->fDisplayedWindow = gWindow->fMainWindow;
+ parse_title(page);
+
+ /*
+ * Now start parsing the header region
+ */
+ parse_header(page);
+}
+
+char *ExpectedBeginScroll =
+"Parser Error: Unexpected new page, expecting a begin scroll\n", *ExpectedEndScroll =
+"Parser Error: Unexpected new page, expected an end scroll\n";
+
+/*
+ * The general HyperDoc parsing function. expects to see anything. This
+ * function will parse until it sees either: 1) A new page starting 2) An end
+ * of file 3) a closing bracket "}"
+ */
+
+void
+parse_HyperDoc(void)
+{
+ TextNode *node = NULL /*, *save_node = NULL, *arg_node = NULL*/ ;
+
+ for(;;) {
+ ret_val = get_token();
+
+ if (ret_val == EOF)
+ return;
+
+ switch (token.type) {
+ case Spadsrc:
+ parse_spadsrc(curr_node);
+ break;
+ case Helppage:
+ parse_help();
+ break;
+ case Endpatch:
+ case Endpaste:
+ case Rbrace:
+ return;
+ case Paste:
+ parse_paste();
+ break;
+ case Pastebutton:
+ parse_pastebutton();
+ break;
+ case Endpage:
+ case NewCommand:
+ case Page:
+ end_a_page();
+ return;
+ case EndScroll:
+ token.type = Endscroll;
+ case Endscroll:
+ start_footer();
+ break;
+ case Beginscroll:
+ start_scrolling();
+ break;
+ case Thispage: /* it really is just a word */
+ curr_node->type = Word;
+ curr_node->data.text = alloc_string(gPageBeingParsed->name);
+ break;
+ case Icorrection:
+ node->type = Noop;
+ break;
+ case Newcond:
+ parse_newcond();
+ break;
+ case Setcond:
+ parse_setcond();
+ break;
+ case Dollar:
+ parse_verbatim(Math);
+ break;
+ case Verbatim:
+ parse_verbatim(Verbatim);
+ break;
+ case Ifcond:
+ parse_ifcond();
+ break;
+ case Fi:
+ if (gInIf)
+ return;
+ else {
+ curr_node->type = Noop;
+ /* Oops I had a problem parsing this puppy */
+ fprintf(stderr, "(HyperDoc) \\fi found without macthing if?\n");
+ longjmp(jmpbuf, 1);
+ fprintf(stderr, "(HyperDoc) Longjmp failed -- Exiting \n");
+ exit(-1);
+ }
+ case Else:
+ if (gInIf)
+ return;
+ else {
+ /* Oops I had a problem parsing this puppy */
+ curr_node->type = Noop;
+ fprintf(stderr, "(HyperDoc) \\else found without macthing if?\n");
+ longjmp(jmpbuf, 1);
+ fprintf(stderr, "(HyperDoc) Longjmp failed -- Exiting \n");
+ exit(-1);
+ }
+ case Macro:
+ parse_macro();
+ break;
+ case Env:
+ /** In this case, get the environment value, and make it a word **/
+ parse_env(curr_node);
+ break;
+ case WindowId:
+ curr_node->type = WindowId;
+ curr_node->space = token.id[-1];
+ curr_node->data.text = window_id(gWindow->fMainWindow);
+ break;
+ case Punctuation:
+ case Word:
+ case Lsquarebrace:
+ case Dash:
+ curr_node->type = token.type;
+ curr_node->space = token.id[-1];
+ curr_node->data.text = alloc_string(token.id);
+ break;
+ case Pagename:
+ {
+ char *str;
+
+ curr_node->type = Word;
+ curr_node->space = 0;
+ str = halloc(strlen(cur_page->name) + 1, "parse");
+ sprintf(str, "%s", cur_page->name);
+ curr_node->data.text = alloc_string(str);
+ break;
+ }
+ case Examplenumber:
+ {
+ char *str;
+
+ curr_node->type = Word;
+ curr_node->space = 0;
+ str = halloc(5, "parse");
+ sprintf(str, "%d", example_number);
+ curr_node->data.text = alloc_string(str);
+ break;
+ }
+ case Rsquarebrace:
+ if (gInOptional)
+ return;
+ else {
+ curr_node->type = token.type;
+ curr_node->space = token.id[-1];
+ curr_node->data.text = alloc_string(token.id);
+ }
+ break;
+ case EndTitems:
+ token.type = Endtitems;
+ case Endtitems:
+ if (gParserMode != AllMode) {
+ curr_node->type = Noop;
+ fprintf(stderr, "(HyperDoc) Found a bad token %s\n", token_table[token.type]);
+ longjmp(jmpbuf, 1);
+ }
+ else {
+ curr_node->type = token.type;
+ break;
+ }
+ case EndItems:
+ token.type = Enditems;
+ case Enditems:
+ gInItems--;
+ case Horizontalline:
+ case Par:
+ case Newline:
+ case Titem:
+ if (gParserMode != AllMode) {
+ curr_node->type = Noop;
+ fprintf(stderr, "(HyperDoc) Found a bad token %s\n", token_table[token.type]);
+ longjmp(jmpbuf, 1);
+ }
+ else {
+ curr_node->type = token.type;
+ break;
+ }
+ case Begintitems:
+ case Beginitems:
+ if (gParserMode != AllMode) {
+ curr_node->type = Noop;
+ fprintf(stderr, "(HyperDoc) Found a bad token %s\n", token_table[token.type]);
+ longjmp(jmpbuf, 1);
+ }
+ else {
+ parse_begin_items();
+ break;
+ }
+ case Item:
+ parse_item();
+ break;
+ case Mitem:
+ parse_mitem();
+ break;
+ case VSpace:
+ case Tab:
+ case HSpace:
+ case Indent:
+ case Indentrel:
+ parse_value1();
+ break;
+ case Space:
+ parse_value2();
+ break;
+ case Lbrace:
+ curr_node->type = Group;
+ curr_node->space = token.id[-1];
+ push_group_stack();
+ node = alloc_node();
+ curr_node->next = node;
+ curr_node = curr_node->next;
+ parse_HyperDoc();
+ curr_node->type = Endgroup;
+ pop_group_stack();
+ break;
+ case Upbutton:
+ case Returnbutton:
+ case Link:
+ case Downlink:
+ case Memolink:
+ case Windowlink:
+ parse_button();
+ break;
+ case Unixlink:
+ case LispMemoLink:
+ case LispDownLink:
+ case Lisplink:
+ case Lispcommand:
+ case Lispcommandquit:
+ case Spadlink:
+ case Spaddownlink:
+ case Spadmemolink:
+ case Unixcommand:
+ case Spadcall:
+ case Spadcallquit:
+ case Qspadcall:
+ case Qspadcallquit:
+ case Lispwindowlink:
+ parse_command();
+ break;
+ case Controlbitmap:
+ case Inputbitmap:
+ case Inputpixmap:
+ case Inputimage:
+ parse_input_pix();
+ break;
+ case Box:
+ parse_box();
+ break;
+ case Mbox:
+ parse_mbox();
+ break;
+ case Free:
+ parse_free();
+ break;
+ case Center:
+ parse_centerline();
+ break;
+ case Bound:
+ add_dependencies();
+ break;
+ case Spadcommand:
+ case Spadgraph:
+ parse_spadcommand(curr_node);
+ break;
+ case Table:
+ parse_table();
+ break;
+ case Beep:
+ case Emphasize:
+ case BoldFace:
+ case Rm:
+ case It:
+ case Tt:
+ case Sl:
+ curr_node->type = token.type;
+ curr_node->space = token.id[-1];
+ break;
+ case Inputstring:
+ parse_inputstring();
+ break;
+ case SimpleBox:
+ parse_simplebox();
+ break;
+ case BoxValue:
+ case StringValue:
+ if (!gStringValueOk) {
+ strcpy(ebuffer,"(HyperDoc): Unexpected Value Command:");
+ strcat(ebuffer, token.id);
+
+ parser_error(ebuffer);
+ curr_node->type = Noop;
+ longjmp(jmpbuf, 1);
+ }
+ curr_node->type = token.type;
+ curr_node->space = token.id[-1];
+ get_expected_token(Lbrace);
+ get_expected_token(Word);
+ curr_node->data.text = alloc_string(token.id);
+ get_expected_token(Rbrace);
+ break;
+ case NoLines:
+ gPageBeingParsed->page_flags |= NOLINES;
+ break;
+ case Pound:
+ curr_node->type = Pound;
+ curr_node->space = token.id[-1];
+ curr_node->next = alloc_node();
+ curr_node = curr_node->next;
+ parse_parameters();
+ break;
+ case Radiobox:
+ parse_radiobox();
+ break;
+ case Radioboxes:
+ parse_radioboxes();
+ break;
+ case Replacepage:
+ parse_replacepage();
+ break;
+ default:
+ fprintf(stderr, "(HyperDoc) Keyword not currently supported: %s\n", token.id);
+ print_page_and_filename();
+ curr_node->type = Noop;
+ break;
+ }
+ if (gEndedPage)
+ return;
+ if (curr_node->type != Noop) {
+ node = alloc_node();
+ curr_node->next = node;
+ curr_node = node;
+ }
+ }
+}
+
+
+/* parse a page from a socket source */
+
+HyperDocPage *
+parse_page_from_socket(void)
+{
+ HyperDocPage *page = alloc_page((char *) NULL);
+ HyperDocPage *hpage;
+
+ init_scanner();
+ input_type = FromSpadSocket;
+ input_string = "";
+ cur_spadcom = NULL;
+ gLinkHashTable = page->fLinkHashTable;
+ hash_init(
+ gLinkHashTable,
+ LinkHashSize,
+ (EqualFunction) window_equal,
+ (HashcodeFunction) window_code);
+ gPageBeingParsed = page;
+ replace_page = NULL;
+ if (setjmp(jmpbuf)) {
+ /* Ooops, somewhere I had an error */
+ free_page(page);
+ page = (HyperDocPage *) hash_find(gWindow->fPageHashTable, "ErrorPage");
+ reset_connection();
+ }
+ else {
+ parse_page(page);
+ page->type = SpadGen;
+ page->filename = NULL;
+ /* just for kicks, let me add this thing to the hash file */
+ hpage = (HyperDocPage *) hash_find(gWindow->fPageHashTable, page->name);
+ if (hpage)
+ hash_replace(gWindow->fPageHashTable, (char *)page, page->name);
+ else {
+ hash_insert(gWindow->fPageHashTable, (char *)page, page->name);
+ }
+ }
+ if (replace_page != NULL) {
+ free_page(page);
+ page = (HyperDocPage *) hash_find(gWindow->fPageHashTable, replace_page);
+ if (page == NULL)
+ fprintf(stderr, "(HyperDoc) Unknown page: %s\n", replace_page);
+ }
+ return page;
+}
+
+HyperDocPage *
+parse_page_from_unixfd(void)
+{
+ HyperDocPage *page = alloc_page((char *) NULL);
+
+ init_scanner();
+ input_type = FromUnixFD;
+ cur_spadcom = NULL;
+ gLinkHashTable = page->fLinkHashTable;
+ hash_init(
+ gLinkHashTable,
+ LinkHashSize,
+ (EqualFunction) window_equal,
+ (HashcodeFunction) window_code);
+ gPageBeingParsed = page;
+ if (setjmp(jmpbuf)) {
+ /* Ooops, somewhere I had an error */
+ free_page(page);
+ page = (HyperDocPage *) hash_find(gWindow->fPageHashTable, "ErrorPage");
+ reset_connection();
+ }
+ else {
+ parse_page(page);
+ page->type = Unixfd;
+ page->filename = NULL;
+ }
+ return page;
+
+}
+
+static void
+start_scrolling(void)
+{
+
+ /*
+ * if I am here than I had a begin scroll. This means I should end the
+ * header, and then start parsing the footer
+ */
+
+ if (gParserRegion != Header) {
+ curr_node->type = Noop;
+ fprintf(stderr, "(HyperDoc) Parser Error: Unexpected BeginScrollFound\n");
+ longjmp(jmpbuf, 1);
+ fprintf(stderr, "(HyperDoc) Longjump failed exiting\n");
+ }
+ curr_node->type = Endheader;
+ curr_node->next = NULL;
+ Pop_MR();
+
+ Push_MR();
+ gParserRegion = Scrolling;
+ gWindow->fDisplayedWindow = gWindow->fScrollWindow;
+ curr_node = alloc_node();
+ gPageBeingParsed->scrolling = curr_node;
+ curr_node->type = Scrollingnode;
+}
+
+static void
+start_footer(void)
+{
+ /*
+ * This ends the parsing of the scrolling region, and then starts to
+ * parse the footer
+ */
+
+ if (gParserRegion != Scrolling) {
+ curr_node->type = Noop;
+ fprintf(stderr, "(HyperDoc) Parser Error: Unexpected Endscroll Found\n");
+ print_page_and_filename();
+ longjmp(jmpbuf, 1);
+ fprintf(stderr, "(HyperDoc) Longjump failed exiting\n");
+ }
+
+ curr_node->type = Endscrolling;
+ curr_node->next = NULL;
+ Pop_MR();
+ linkScrollBars();
+
+ Push_MR();
+ gParserRegion = Footer;
+ curr_node = alloc_node();
+ curr_node->type = Footernode;
+ gPageBeingParsed->footer = curr_node;
+ gWindow->fDisplayedWindow = gWindow->fMainWindow;
+}
+
+static void
+end_a_page(void)
+{
+ if (gParserRegion == Scrolling) {
+ fprintf(stderr, "%s\n",
+ "(HyperDoc) end_a_page: Unexpected End of Page occurred \
+ inside a \beginscroll");
+ print_page_and_filename();
+ jump();
+ }
+ gEndedPage = TRUE;
+ if (gParserRegion == Footer) {
+ /* the person had all the regions, I basically just have to leave */
+ curr_node->type = Endscrolling;
+ curr_node->next = NULL;
+ Pop_MR();
+ }
+ else if (gParserRegion == Header) {
+ /* person had a header. So just end it and return */
+ curr_node->type = Endheader;
+ curr_node->next = NULL;
+ Pop_MR();
+ gPageBeingParsed->scrolling = NULL;
+ gPageBeingParsed->footer = NULL;
+ }
+}
+
+static void
+parse_replacepage(void)
+{
+ get_expected_token(Lbrace);
+ get_token();
+ replace_page = alloc_string(token.id);
+ get_expected_token(Rbrace);
+}
+@
+\section{License}
+<<license>>=
+/*
+Copyright (c) 1991-2002, The Numerical ALgorithms Group Ltd.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+ - Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ - Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in
+ the documentation and/or other materials provided with the
+ distribution.
+
+ - Neither the name of The Numerical ALgorithms Group Ltd. nor the
+ names of its contributors may be used to endorse or promote products
+ derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+@
+<<*>>=
+<<license>>
+<<parse.c>>
+@
+\eject
+\begin{thebibliography}{99}
+\bibitem{1} nothing
+\end{thebibliography}
+\end{document}
+
+
+
+