+++ /dev/null
-/* Bison Grammar Scanner -*- C -*-
-
- Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
-
- This file is part of Bison, the GNU Compiler Compiler.
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- 02110-1301 USA
-*/
-
-%option debug nodefault nounput noyywrap never-interactive
-%option prefix="gram_" outfile="lex.yy.c"
-
-%{
-#include "system.h"
-
-#include <mbswidth.h>
-#include <get-errno.h>
-#include <quote.h>
-
-#include "complain.h"
-#include "files.h"
-#include "getargs.h"
-#include "gram.h"
-#include "quotearg.h"
-#include "reader.h"
-#include "uniqstr.h"
-
-#define YY_USER_INIT \
- do \
- { \
- scanner_cursor.file = current_file; \
- scanner_cursor.line = 1; \
- scanner_cursor.column = 1; \
- code_start = scanner_cursor; \
- } \
- while (0)
-
-/* Location of scanner cursor. */
-boundary scanner_cursor;
-
-static void adjust_location (location *, char const *, size_t);
-#define YY_USER_ACTION adjust_location (loc, yytext, yyleng);
-
-static size_t no_cr_read (FILE *, char *, size_t);
-#define YY_INPUT(buf, result, size) ((result) = no_cr_read (yyin, buf, size))
-
-/* Within well-formed rules, RULE_LENGTH is the number of values in
- the current rule so far, which says where to find `$0' with respect
- to the top of the stack. It is not the same as the rule->length in
- the case of mid rule actions.
-
- Outside of well-formed rules, RULE_LENGTH has an undefined value. */
-int rule_length;
-
-static void handle_dollar (int token_type, char *cp, location loc);
-static void handle_at (int token_type, char *cp, location loc);
-static void handle_syncline (char *args);
-static unsigned long int scan_integer (char const *p, int base, location loc);
-static int convert_ucn_to_byte (char const *hex_text);
-static void unexpected_eof (boundary, char const *);
-static void unexpected_newline (boundary, char const *);
-
-%}
-%x SC_COMMENT SC_LINE_COMMENT SC_YACC_COMMENT
-%x SC_STRING SC_CHARACTER
-%x SC_ESCAPED_STRING SC_ESCAPED_CHARACTER
-%x SC_PRE_CODE SC_BRACED_CODE SC_PROLOGUE SC_EPILOGUE
-
-letter [.abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_]
-id {letter}({letter}|[0-9])*
-directive %{letter}({letter}|[0-9]|-)*
-int [0-9]+
-
-/* POSIX says that a tag must be both an id and a C union member, but
- historically almost any character is allowed in a tag. We disallow
- NUL and newline, as this simplifies our implementation. */
-tag [^\0\n>]+
-
-/* Zero or more instances of backslash-newline. Following GCC, allow
- white space between the backslash and the newline. */
-splice (\\[ \f\t\v]*\n)*
-
-%%
-%{
- /* Nesting level of the current code in braces. */
- int braces_level IF_LINT (= 0);
-
- /* Parent context state, when applicable. */
- int context_state IF_LINT (= 0);
-
- /* Token type to return, when applicable. */
- int token_type IF_LINT (= 0);
-
- /* Where containing code started, when applicable. Its initial
- value is relevant only when yylex is invoked in the SC_EPILOGUE
- start condition. */
- boundary code_start = scanner_cursor;
-
- /* Where containing comment or string or character literal started,
- when applicable. */
- boundary token_start IF_LINT (= scanner_cursor);
-%}
-
-
- /*-----------------------.
- | Scanning white space. |
- `-----------------------*/
-
-<INITIAL>
-{
- /* Comments and white space. */
- "," warn_at (*loc, _("stray `,' treated as white space"));
- [ \f\n\t\v] |
- "//".* ;
- "/*" {
- token_start = loc->start;
- context_state = YY_START;
- BEGIN SC_YACC_COMMENT;
- }
-
- /* #line directives are not documented, and may be withdrawn or
- modified in future versions of Bison. */
- ^"#line "{int}" \"".*"\"\n" {
- handle_syncline (yytext + sizeof "#line " - 1);
- }
-}
-
-
- /*----------------------------.
- | Scanning Bison directives. |
- `----------------------------*/
-<INITIAL>
-{
-
- /* Code in between braces. */
- "{" {
- STRING_GROW;
- token_type = BRACED_CODE;
- braces_level = 0;
- code_start = loc->start;
- BEGIN SC_BRACED_CODE;
- }
-
-}
-
-
- /*------------------------------------------------------------.
- | Scanning a C comment. The initial `/ *' is already eaten. |
- `------------------------------------------------------------*/
-
-<SC_COMMENT>
-{
- "*"{splice}"/" STRING_GROW; BEGIN context_state;
- <<EOF>> unexpected_eof (token_start, "*/"); BEGIN context_state;
-}
-
-
- /*--------------------------------------------------------------.
- | Scanning a line comment. The initial `//' is already eaten. |
- `--------------------------------------------------------------*/
-
-<SC_LINE_COMMENT>
-{
- "\n" STRING_GROW; BEGIN context_state;
- {splice} STRING_GROW;
- <<EOF>> BEGIN context_state;
-}
-
-
- /*------------------------------------------------.
- | Scanning a Bison string, including its escapes. |
- | The initial quote is already eaten. |
- `------------------------------------------------*/
-
-<SC_ESCAPED_STRING>
-{
- "\"" {
- STRING_FINISH;
- loc->start = token_start;
- val->chars = last_string;
- rule_length++;
- BEGIN INITIAL;
- return STRING;
- }
- \n unexpected_newline (token_start, "\""); BEGIN INITIAL;
- <<EOF>> unexpected_eof (token_start, "\""); BEGIN INITIAL;
-}
-
- /*----------------------------------------------------------.
- | Scanning a Bison character literal, decoding its escapes. |
- | The initial quote is already eaten. |
- `----------------------------------------------------------*/
-
-<SC_ESCAPED_CHARACTER>
-{
- "'" {
- unsigned char last_string_1;
- STRING_GROW;
- STRING_FINISH;
- loc->start = token_start;
- val->symbol = symbol_get (quotearg_style (escape_quoting_style,
- last_string),
- *loc);
- symbol_class_set (val->symbol, token_sym, *loc);
- last_string_1 = last_string[1];
- symbol_user_token_number_set (val->symbol, last_string_1, *loc);
- STRING_FREE;
- rule_length++;
- BEGIN INITIAL;
- return ID;
- }
- \n unexpected_newline (token_start, "'"); BEGIN INITIAL;
- <<EOF>> unexpected_eof (token_start, "'"); BEGIN INITIAL;
-}
-
-<SC_ESCAPED_CHARACTER,SC_ESCAPED_STRING>
-{
- \0 complain_at (*loc, _("invalid null character"));
-}
-
-
- /*----------------------------.
- | Decode escaped characters. |
- `----------------------------*/
-
-<SC_ESCAPED_STRING,SC_ESCAPED_CHARACTER>
-{
- \\[0-7]{1,3} {
- unsigned long int c = strtoul (yytext + 1, 0, 8);
- if (UCHAR_MAX < c)
- complain_at (*loc, _("invalid escape sequence: %s"), quote (yytext));
- else if (! c)
- complain_at (*loc, _("invalid null character: %s"), quote (yytext));
- else
- obstack_1grow (&obstack_for_string, c);
- }
-
- \\x[0-9abcdefABCDEF]+ {
- unsigned long int c;
- set_errno (0);
- c = strtoul (yytext + 2, 0, 16);
- if (UCHAR_MAX < c || get_errno ())
- complain_at (*loc, _("invalid escape sequence: %s"), quote (yytext));
- else if (! c)
- complain_at (*loc, _("invalid null character: %s"), quote (yytext));
- else
- obstack_1grow (&obstack_for_string, c);
- }
-
- \\a obstack_1grow (&obstack_for_string, '\a');
- \\b obstack_1grow (&obstack_for_string, '\b');
- \\f obstack_1grow (&obstack_for_string, '\f');
- \\n obstack_1grow (&obstack_for_string, '\n');
- \\r obstack_1grow (&obstack_for_string, '\r');
- \\t obstack_1grow (&obstack_for_string, '\t');
- \\v obstack_1grow (&obstack_for_string, '\v');
-
- /* \\[\"\'?\\] would be shorter, but it confuses xgettext. */
- \\("\""|"'"|"?"|"\\") obstack_1grow (&obstack_for_string, yytext[1]);
-
- \\(u|U[0-9abcdefABCDEF]{4})[0-9abcdefABCDEF]{4} {
- int c = convert_ucn_to_byte (yytext);
- if (c < 0)
- complain_at (*loc, _("invalid escape sequence: %s"), quote (yytext));
- else if (! c)
- complain_at (*loc, _("invalid null character: %s"), quote (yytext));
- else
- obstack_1grow (&obstack_for_string, c);
- }
- \\(.|\n) {
- complain_at (*loc, _("unrecognized escape sequence: %s"), quote (yytext));
- STRING_GROW;
- }
-}
-
- /*--------------------------------------------.
- | Scanning user-code characters and strings. |
- `--------------------------------------------*/
-
-<SC_CHARACTER,SC_STRING>
-{
- {splice}|\\{splice}[^\n$@\[\]] STRING_GROW;
-}
-
-<SC_CHARACTER>
-{
- "'" STRING_GROW; BEGIN context_state;
- \n unexpected_newline (token_start, "'"); BEGIN context_state;
- <<EOF>> unexpected_eof (token_start, "'"); BEGIN context_state;
-}
-
-<SC_STRING>
-{
- "\"" STRING_GROW; BEGIN context_state;
- \n unexpected_newline (token_start, "\""); BEGIN context_state;
- <<EOF>> unexpected_eof (token_start, "\""); BEGIN context_state;
-}
-
-
- /*---------------------------------------------------.
- | Strings, comments etc. can be found in user code. |
- `---------------------------------------------------*/
-
-<INITIAL>
-{
- "'" {
- STRING_GROW;
- context_state = YY_START;
- token_start = loc->start;
- BEGIN SC_CHARACTER;
- }
- "\"" {
- STRING_GROW;
- context_state = YY_START;
- token_start = loc->start;
- BEGIN SC_STRING;
- }
- "/"{splice}"*" {
- STRING_GROW;
- context_state = YY_START;
- token_start = loc->start;
- BEGIN SC_COMMENT;
- }
- "/"{splice}"/" {
- STRING_GROW;
- context_state = YY_START;
- BEGIN SC_LINE_COMMENT;
- }
-}
-
-
- /*---------------------------------------------------------------.
- | Scanning some code in braces (%union and actions). The initial |
- | "{" is already eaten. |
- `---------------------------------------------------------------*/
-
-<INITIAL>
-{
- "{"|"<"{splice}"%" STRING_GROW; braces_level++;
- "%"{splice}">" STRING_GROW; braces_level--;
- "}" {
- bool outer_brace = --braces_level < 0;
-
- /* As an undocumented Bison extension, append `;' before the last
- brace in braced code, so that the user code can omit trailing
- `;'. But do not append `;' if emulating Yacc, since Yacc does
- not append one.
-
- FIXME: Bison should warn if a semicolon seems to be necessary
- here, and should omit the semicolon if it seems unnecessary
- (e.g., after ';', '{', or '}', each followed by comments or
- white space). Such a warning shouldn't depend on --yacc; it
- should depend on a new --pedantic option, which would cause
- Bison to warn if it detects an extension to POSIX. --pedantic
- should also diagnose other Bison extensions like %yacc.
- Perhaps there should also be a GCC-style --pedantic-errors
- option, so that such warnings are diagnosed as errors. */
- if (outer_brace && token_type == BRACED_CODE && ! yacc_flag)
- obstack_1grow (&obstack_for_string, ';');
-
- obstack_1grow (&obstack_for_string, '}');
-
- if (outer_brace)
- {
- STRING_FINISH;
- rule_length++;
- loc->start = code_start;
- val->chars = last_string;
- BEGIN INITIAL;
- return token_type;
- }
- }
-
- /* Tokenize `<<%' correctly (as `<<' `%') rather than incorrrectly
- (as `<' `<%'). */
- "<"{splice}"<" STRING_GROW;
-
- "$"("<"{tag}">")?(-?[0-9]+|"$") handle_dollar (token_type, yytext, *loc);
- "@"(-?[0-9]+|"$") handle_at (token_type, yytext, *loc);
-
- <<EOF>> unexpected_eof (code_start, "}"); BEGIN INITIAL;
-}
-
-
- /*--------------------------------------------------------------.
- | Scanning some prologue: from "%{" (already scanned) to "%}". |
- `--------------------------------------------------------------*/
-
-<SC_PROLOGUE>
-{
- "%}" {
- STRING_FINISH;
- loc->start = code_start;
- val->chars = last_string;
- BEGIN INITIAL;
- return PROLOGUE;
- }
-
- <<EOF>> unexpected_eof (code_start, "%}"); BEGIN INITIAL;
-}
-
-
- /*---------------------------------------------------------------.
- | Scanning the epilogue (everything after the second "%%", which |
- | has already been eaten). |
- `---------------------------------------------------------------*/
-
-<SC_EPILOGUE>
-{
- <<EOF>> {
- STRING_FINISH;
- loc->start = code_start;
- val->chars = last_string;
- BEGIN INITIAL;
- return EPILOGUE;
- }
-}
-
-
- /*-----------------------------------------.
- | Escape M4 quoting characters in C code. |
- `-----------------------------------------*/
-
-<SC_COMMENT,SC_LINE_COMMENT,SC_STRING,SC_CHARACTER,SC_BRACED_CODE,SC_PROLOGUE,SC_EPILOGUE>
-{
- \$ obstack_sgrow (&obstack_for_string, "$][");
- \@ obstack_sgrow (&obstack_for_string, "@@");
- \[ obstack_sgrow (&obstack_for_string, "@{");
- \] obstack_sgrow (&obstack_for_string, "@}");
-}
-
-
- /*-----------------------------------------------------.
- | By default, grow the string obstack with the input. |
- `-----------------------------------------------------*/
-
-<SC_COMMENT,SC_LINE_COMMENT,SC_BRACED_CODE,SC_PROLOGUE,SC_EPILOGUE,SC_STRING,SC_CHARACTER,SC_ESCAPED_STRING,SC_ESCAPED_CHARACTER>. |
-<SC_COMMENT,SC_LINE_COMMENT,SC_BRACED_CODE,SC_PROLOGUE,SC_EPILOGUE>\n STRING_GROW;
-
-%%
-
-/* Keeps track of the maximum number of semantic values to the left of
- a handle (those referenced by $0, $-1, etc.) are required by the
- semantic actions of this grammar. */
-int max_left_semantic_context = 0;
-
-/* Set *LOC and adjust scanner cursor to account for token TOKEN of
- size SIZE. */
-
-static void
-adjust_location (location *loc, char const *token, size_t size)
-{
- int line = scanner_cursor.line;
- int column = scanner_cursor.column;
- char const *p0 = token;
- char const *p = token;
- char const *lim = token + size;
-
- loc->start = scanner_cursor;
-
- for (p = token; p < lim; p++)
- switch (*p)
- {
- case '\n':
- line++;
- column = 1;
- p0 = p + 1;
- break;
-
- case '\t':
- column += mbsnwidth (p0, p - p0, 0);
- column += 8 - ((column - 1) & 7);
- p0 = p + 1;
- break;
- }
-
- scanner_cursor.line = line;
- scanner_cursor.column = column + mbsnwidth (p0, p - p0, 0);
-
- loc->end = scanner_cursor;
-}
-
-
-/* Read bytes from FP into buffer BUF of size SIZE. Return the
- number of bytes read. Remove '\r' from input, treating \r\n
- and isolated \r as \n. */
-
-static size_t
-no_cr_read (FILE *fp, char *buf, size_t size)
-{
- size_t bytes_read = fread (buf, 1, size, fp);
- if (bytes_read)
- {
- char *w = memchr (buf, '\r', bytes_read);
- if (w)
- {
- char const *r = ++w;
- char const *lim = buf + bytes_read;
-
- for (;;)
- {
- /* Found an '\r'. Treat it like '\n', but ignore any
- '\n' that immediately follows. */
- w[-1] = '\n';
- if (r == lim)
- {
- int ch = getc (fp);
- if (ch != '\n' && ungetc (ch, fp) != ch)
- break;
- }
- else if (*r == '\n')
- r++;
-
- /* Copy until the next '\r'. */
- do
- {
- if (r == lim)
- return w - buf;
- }
- while ((*w++ = *r++) != '\r');
- }
-
- return w - buf;
- }
- }
-
- return bytes_read;
-}
-
-
-/*------------------------------------------------------------------.
-| TEXT is pointing to a wannabee semantic value (i.e., a `$'). |
-| |
-| Possible inputs: $[<TYPENAME>]($|integer) |
-| |
-| Output to OBSTACK_FOR_STRING a reference to this semantic value. |
-`------------------------------------------------------------------*/
-
-static inline bool
-handle_action_dollar (char *text, location loc)
-{
- const char *type_name = NULL;
- char *cp = text + 1;
-
- if (! current_rule)
- return false;
-
- /* Get the type name if explicit. */
- if (*cp == '<')
- {
- type_name = ++cp;
- while (*cp != '>')
- ++cp;
- *cp = '\0';
- ++cp;
- }
-
- if (*cp == '$')
- {
- if (!type_name)
- type_name = symbol_list_n_type_name_get (current_rule, loc, 0);
- if (!type_name && typed)
- complain_at (loc, _("$$ of `%s' has no declared type"),
- current_rule->sym->tag);
- if (!type_name)
- type_name = "";
- obstack_fgrow1 (&obstack_for_string,
- "]b4_lhs_value([%s])[", type_name);
- }
- else
- {
- long int num;
- set_errno (0);
- num = strtol (cp, 0, 10);
-
- if (INT_MIN <= num && num <= rule_length && ! get_errno ())
- {
- int n = num;
- if (1-n > max_left_semantic_context)
- max_left_semantic_context = 1-n;
- if (!type_name && n > 0)
- type_name = symbol_list_n_type_name_get (current_rule, loc, n);
- if (!type_name && typed)
- complain_at (loc, _("$%d of `%s' has no declared type"),
- n, current_rule->sym->tag);
- if (!type_name)
- type_name = "";
- obstack_fgrow3 (&obstack_for_string,
- "]b4_rhs_value(%d, %d, [%s])[",
- rule_length, n, type_name);
- }
- else
- complain_at (loc, _("integer out of range: %s"), quote (text));
- }
-
- return true;
-}
-
-
-/*----------------------------------------------------------------.
-| Map `$?' onto the proper M4 symbol, depending on its TOKEN_TYPE |
-| (are we in an action?). |
-`----------------------------------------------------------------*/
-
-static void
-handle_dollar (int token_type, char *text, location loc)
-{
- switch (token_type)
- {
- case BRACED_CODE:
- if (handle_action_dollar (text, loc))
- return;
- break;
-
- case PERCENT_DESTRUCTOR:
- case PERCENT_INITIAL_ACTION:
- case PERCENT_PRINTER:
- if (text[1] == '$')
- {
- obstack_sgrow (&obstack_for_string, "]b4_dollar_dollar[");
- return;
- }
- break;
-
- default:
- break;
- }
-
- complain_at (loc, _("invalid value: %s"), quote (text));
-}
-
-
-/*------------------------------------------------------.
-| TEXT is a location token (i.e., a `@...'). Output to |
-| OBSTACK_FOR_STRING a reference to this location. |
-`------------------------------------------------------*/
-
-static inline bool
-handle_action_at (char *text, location loc)
-{
- char *cp = text + 1;
- locations_flag = true;
-
- if (! current_rule)
- return false;
-
- if (*cp == '$')
- obstack_sgrow (&obstack_for_string, "]b4_lhs_location[");
- else
- {
- long int num;
- set_errno (0);
- num = strtol (cp, 0, 10);
-
- if (INT_MIN <= num && num <= rule_length && ! get_errno ())
- {
- int n = num;
- obstack_fgrow2 (&obstack_for_string, "]b4_rhs_location(%d, %d)[",
- rule_length, n);
- }
- else
- complain_at (loc, _("integer out of range: %s"), quote (text));
- }
-
- return true;
-}
-
-
-/*----------------------------------------------------------------.
-| Map `@?' onto the proper M4 symbol, depending on its TOKEN_TYPE |
-| (are we in an action?). |
-`----------------------------------------------------------------*/
-
-static void
-handle_at (int token_type, char *text, location loc)
-{
- switch (token_type)
- {
- case BRACED_CODE:
- handle_action_at (text, loc);
- return;
-
- case PERCENT_INITIAL_ACTION:
- case PERCENT_DESTRUCTOR:
- case PERCENT_PRINTER:
- if (text[1] == '$')
- {
- obstack_sgrow (&obstack_for_string, "]b4_at_dollar[");
- return;
- }
- break;
-
- default:
- break;
- }
-
- complain_at (loc, _("invalid value: %s"), quote (text));
-}
-
-
-/*------------------------------------------------------.
-| Scan NUMBER for a base-BASE integer at location LOC. |
-`------------------------------------------------------*/
-
-static unsigned long int
-scan_integer (char const *number, int base, location loc)
-{
- unsigned long int num;
- set_errno (0);
- num = strtoul (number, 0, base);
- if (INT_MAX < num || get_errno ())
- {
- complain_at (loc, _("integer out of range: %s"), quote (number));
- num = INT_MAX;
- }
- return num;
-}
-
-
-/*------------------------------------------------------------------.
-| Convert universal character name UCN to a single-byte character, |
-| and return that character. Return -1 if UCN does not correspond |
-| to a single-byte character. |
-`------------------------------------------------------------------*/
-
-static int
-convert_ucn_to_byte (char const *ucn)
-{
- unsigned long int code = strtoul (ucn + 2, 0, 16);
-
- /* FIXME: Currently we assume Unicode-compatible unibyte characters
- on ASCII hosts (i.e., Latin-1 on hosts with 8-bit bytes). On
- non-ASCII hosts we support only the portable C character set.
- These limitations should be removed once we add support for
- multibyte characters. */
-
- if (UCHAR_MAX < code)
- return -1;
-
-#if ! ('$' == 0x24 && '@' == 0x40 && '`' == 0x60 && '~' == 0x7e)
- {
- /* A non-ASCII host. Use CODE to index into a table of the C
- basic execution character set, which is guaranteed to exist on
- all Standard C platforms. This table also includes '$', '@',
- and '`', which are not in the basic execution character set but
- which are unibyte characters on all the platforms that we know
- about. */
- static signed char const table[] =
- {
- '\0', -1, -1, -1, -1, -1, -1, '\a',
- '\b', '\t', '\n', '\v', '\f', '\r', -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1,
- ' ', '!', '"', '#', '$', '%', '&', '\'',
- '(', ')', '*', '+', ',', '-', '.', '/',
- '0', '1', '2', '3', '4', '5', '6', '7',
- '8', '9', ':', ';', '<', '=', '>', '?',
- '@', 'A', 'B', 'C', 'D', 'E', 'F', 'G',
- 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
- 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W',
- 'X', 'Y', 'Z', '[', '\\', ']', '^', '_',
- '`', 'a', 'b', 'c', 'd', 'e', 'f', 'g',
- 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
- 'p', 'q', 'r', 's', 't', 'u', 'v', 'w',
- 'x', 'y', 'z', '{', '|', '}', '~'
- };
-
- code = code < sizeof table ? table[code] : -1;
- }
-#endif
-
- return code;
-}
-
-
-/*----------------------------------------------------------------.
-| Handle `#line INT "FILE"'. ARGS has already skipped `#line '. |
-`----------------------------------------------------------------*/
-
-static void
-handle_syncline (char *args)
-{
- int lineno = strtol (args, &args, 10);
- const char *file = NULL;
- file = strchr (args, '"') + 1;
- *strchr (file, '"') = 0;
- scanner_cursor.file = current_file = uniqstr_new (file);
- scanner_cursor.line = lineno;
- scanner_cursor.column = 1;
-}
-
-
-/*----------------------------------------------------------------.
-| For a token or comment starting at START, report message MSGID, |
-| which should say that an end marker was found before |
-| the expected TOKEN_END. |
-`----------------------------------------------------------------*/
-
-static void
-unexpected_end (boundary start, char const *msgid, char const *token_end)
-{
- location loc;
- loc.start = start;
- loc.end = scanner_cursor;
- complain_at (loc, _(msgid), token_end);
-}
-
-
-/*------------------------------------------------------------------------.
-| Report an unexpected EOF in a token or comment starting at START. |
-| An end of file was encountered and the expected TOKEN_END was missing. |
-`------------------------------------------------------------------------*/
-
-static void
-unexpected_eof (boundary start, char const *token_end)
-{
- unexpected_end (start, N_("missing `%s' at end of file"), token_end);
-}
-
-
-/*----------------------------------------.
-| Likewise, but for unexpected newlines. |
-`----------------------------------------*/
-
-static void
-unexpected_newline (boundary start, char const *token_end)
-{
- unexpected_end (start, N_("missing `%s' at end of line"), token_end);
-}
-
-
-/*-------------------------.
-| Initialize the scanner. |
-`-------------------------*/
-
-void
-scanner_initialize (void)
-{
- obstack_init (&obstack_for_string);
-}
-
-
-/*-----------------------------------------------.
-| Free all the memory allocated to the scanner. |
-`-----------------------------------------------*/
-
-void
-scanner_free (void)
-{
- obstack_free (&obstack_for_string, 0);
- /* Reclaim Flex's buffers. */
- yy_delete_buffer (YY_CURRENT_BUFFER);
-}
projects / bison.git / commitdiff
