#undef gram_wrap
#define gram_wrap() 1
-#include "system.h"
-
-#include <mbswidth.h>
-#include <quote.h>
+#define FLEX_PREFIX(Id) gram_ ## Id
+#include "flex-scanner.h"
#include "complain.h"
#include "files.h"
-#include "getargs.h"
#include "gram.h"
#include "quotearg.h"
#include "reader.h"
#include "uniqstr.h"
+#include <mbswidth.h>
+#include <quote.h>
+
+#include "scan-gram.h"
+
+#define YY_DECL GRAM_LEX_DECL
+
#define YY_USER_INIT \
- do \
- { \
- scanner_cursor.file = current_file; \
- scanner_cursor.line = 1; \
- scanner_cursor.column = 1; \
- code_start = scanner_cursor; \
- } \
- while (0)
-
-/* Pacify "gcc -Wmissing-prototypes" when flex 2.5.31 is used. */
-int gram_get_lineno (void);
-FILE *gram_get_in (void);
-FILE *gram_get_out (void);
-int gram_get_leng (void);
-char *gram_get_text (void);
-void gram_set_lineno (int);
-void gram_set_in (FILE *);
-void gram_set_out (FILE *);
-int gram_get_debug (void);
-void gram_set_debug (int);
-int gram_lex_destroy (void);
+ code_start = scanner_cursor = loc->start; \
/* Location of scanner cursor. */
-boundary scanner_cursor;
+static boundary scanner_cursor;
-static void adjust_location (location *, char const *, size_t);
-#define YY_USER_ACTION adjust_location (loc, yytext, yyleng);
+#define YY_USER_ACTION location_compute (loc, &scanner_cursor, 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))
-
-/* OBSTACK_FOR_STRING -- Used to store all the characters that we need to
- keep (to construct ID, STRINGS etc.). Use the following macros to
- use it.
-
- Use STRING_GROW to append what has just been matched, and
- STRING_FINISH to end the string (it puts the ending 0).
- STRING_FINISH also stores this string in LAST_STRING, which can be
- used, and which is used by STRING_FREE to free the last string. */
-
-static struct obstack obstack_for_string;
-
/* A string representing the most recently saved token. */
char *last_string;
-/* The location of the most recently saved token, if it was a
- BRACED_CODE token; otherwise, this has an unspecified value. */
-location last_braced_code_loc;
-
-#define STRING_GROW \
- obstack_grow (&obstack_for_string, yytext, yyleng)
-
-#define STRING_FINISH \
- do { \
- obstack_1grow (&obstack_for_string, '\0'); \
- last_string = obstack_finish (&obstack_for_string); \
- } while (0)
-
-#define STRING_FREE \
- obstack_free (&obstack_for_string, last_string)
-
void
-scanner_last_string_free (void)
+gram_scanner_last_string_free (void)
{
STRING_FREE;
}
-/* 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. */
-static int rule_length;
-
-static void rule_length_overflow (location) __attribute__ ((__noreturn__));
-
-/* Increment the rule length by one, checking for overflow. */
-static inline void
-increment_rule_length (location loc)
-{
- rule_length++;
-
- /* Don't allow rule_length == INT_MAX, since that might cause
- confusion with strtol if INT_MAX == LONG_MAX. */
- if (rule_length == INT_MAX)
- rule_length_overflow (loc);
-}
-
-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 *, location);
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_newline (boundary, char const *);
%}
-%x SC_COMMENT SC_LINE_COMMENT SC_YACC_COMMENT
-%x SC_STRING SC_CHARACTER
-%x SC_AFTER_IDENTIFIER
+ /* A C-like comment in directives/rules. */
+%x SC_YACC_COMMENT
+ /* Strings and characters in directives/rules. */
%x SC_ESCAPED_STRING SC_ESCAPED_CHARACTER
-%x SC_PRE_CODE SC_BRACED_CODE SC_PROLOGUE SC_EPILOGUE
+ /* A identifier was just read in directives/rules. Special state
+ to capture the sequence `identifier :'. */
+%x SC_AFTER_IDENTIFIER
+
+ /* Three types of user code:
+ - prologue (code between `%{' `%}' in the first section, before %%);
+ - actions, printers, union, etc, (between braced in the middle section);
+ - epilogue (everything after the second %%). */
+%x SC_PROLOGUE SC_BRACED_CODE SC_EPILOGUE
+ /* C and C++ comments in code. */
+%x SC_COMMENT SC_LINE_COMMENT
+ /* Strings and characters in code. */
+%x SC_STRING SC_CHARACTER
letter [.abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_]
id {letter}({letter}|[0-9])*
/* Parent context state, when applicable. */
int context_state IF_LINT (= 0);
- /* Token type to return, when applicable. */
- int token_type IF_LINT (= 0);
-
/* Location of most recent identifier, when applicable. */
location id_loc IF_LINT (= empty_location);
| Scanning white space. |
`-----------------------*/
-<INITIAL,SC_AFTER_IDENTIFIER,SC_PRE_CODE>
+<INITIAL,SC_AFTER_IDENTIFIER>
{
/* Comments and white space. */
"," warn_at (*loc, _("stray `,' treated as white space"));
`----------------------------*/
<INITIAL>
{
- "%binary" return PERCENT_NONASSOC;
- "%debug" return PERCENT_DEBUG;
- "%default"[-_]"prec" return PERCENT_DEFAULT_PREC;
- "%define" return PERCENT_DEFINE;
- "%defines" return PERCENT_DEFINES;
- "%destructor" token_type = PERCENT_DESTRUCTOR; BEGIN SC_PRE_CODE;
- "%dprec" return PERCENT_DPREC;
- "%error"[-_]"verbose" return PERCENT_ERROR_VERBOSE;
- "%expect" return PERCENT_EXPECT;
- "%expect"[-_]"rr" return PERCENT_EXPECT_RR;
- "%file-prefix" return PERCENT_FILE_PREFIX;
+ "%after-header" return PERCENT_AFTER_HEADER;
+ "%before-header" return PERCENT_BEFORE_HEADER;
+ "%binary" return PERCENT_NONASSOC;
+ "%debug" return PERCENT_DEBUG;
+ "%default"[-_]"prec" return PERCENT_DEFAULT_PREC;
+ "%define" return PERCENT_DEFINE;
+ "%defines" return PERCENT_DEFINES;
+ "%destructor" return PERCENT_DESTRUCTOR;
+ "%dprec" return PERCENT_DPREC;
+ "%end-header" return PERCENT_END_HEADER;
+ "%error"[-_]"verbose" return PERCENT_ERROR_VERBOSE;
+ "%expect" return PERCENT_EXPECT;
+ "%expect"[-_]"rr" return PERCENT_EXPECT_RR;
+ "%file-prefix" return PERCENT_FILE_PREFIX;
"%fixed"[-_]"output"[-_]"files" return PERCENT_YACC;
- "%initial-action" token_type = PERCENT_INITIAL_ACTION; BEGIN SC_PRE_CODE;
- "%glr-parser" return PERCENT_GLR_PARSER;
- "%left" return PERCENT_LEFT;
- "%lex-param" token_type = PERCENT_LEX_PARAM; BEGIN SC_PRE_CODE;
- "%locations" return PERCENT_LOCATIONS;
- "%merge" return PERCENT_MERGE;
- "%name"[-_]"prefix" return PERCENT_NAME_PREFIX;
- "%no"[-_]"default"[-_]"prec" return PERCENT_NO_DEFAULT_PREC;
- "%no"[-_]"lines" return PERCENT_NO_LINES;
- "%nonassoc" return PERCENT_NONASSOC;
- "%nondeterministic-parser" return PERCENT_NONDETERMINISTIC_PARSER;
- "%nterm" return PERCENT_NTERM;
- "%output" return PERCENT_OUTPUT;
- "%parse-param" token_type = PERCENT_PARSE_PARAM; BEGIN SC_PRE_CODE;
- "%prec" rule_length--; return PERCENT_PREC;
- "%printer" token_type = PERCENT_PRINTER; BEGIN SC_PRE_CODE;
- "%pure"[-_]"parser" return PERCENT_PURE_PARSER;
- "%require" return PERCENT_REQUIRE;
- "%right" return PERCENT_RIGHT;
- "%skeleton" return PERCENT_SKELETON;
- "%start" return PERCENT_START;
- "%term" return PERCENT_TOKEN;
- "%token" return PERCENT_TOKEN;
- "%token"[-_]"table" return PERCENT_TOKEN_TABLE;
- "%type" return PERCENT_TYPE;
- "%union" token_type = PERCENT_UNION; BEGIN SC_PRE_CODE;
- "%verbose" return PERCENT_VERBOSE;
- "%yacc" return PERCENT_YACC;
+ "%initial-action" return PERCENT_INITIAL_ACTION;
+ "%glr-parser" return PERCENT_GLR_PARSER;
+ "%left" return PERCENT_LEFT;
+ "%lex-param" return PERCENT_LEX_PARAM;
+ "%locations" return PERCENT_LOCATIONS;
+ "%merge" return PERCENT_MERGE;
+ "%name"[-_]"prefix" return PERCENT_NAME_PREFIX;
+ "%no"[-_]"default"[-_]"prec" return PERCENT_NO_DEFAULT_PREC;
+ "%no"[-_]"lines" return PERCENT_NO_LINES;
+ "%nonassoc" return PERCENT_NONASSOC;
+ "%nondeterministic-parser" return PERCENT_NONDETERMINISTIC_PARSER;
+ "%nterm" return PERCENT_NTERM;
+ "%output" return PERCENT_OUTPUT;
+ "%parse-param" return PERCENT_PARSE_PARAM;
+ "%prec" return PERCENT_PREC;
+ "%printer" return PERCENT_PRINTER;
+ "%pure"[-_]"parser" return PERCENT_PURE_PARSER;
+ "%require" return PERCENT_REQUIRE;
+ "%right" return PERCENT_RIGHT;
+ "%skeleton" return PERCENT_SKELETON;
+ "%start" return PERCENT_START;
+ "%start-header" return PERCENT_START_HEADER;
+ "%term" return PERCENT_TOKEN;
+ "%token" return PERCENT_TOKEN;
+ "%token"[-_]"table" return PERCENT_TOKEN_TABLE;
+ "%type" return PERCENT_TYPE;
+ "%union" return PERCENT_UNION;
+ "%verbose" return PERCENT_VERBOSE;
+ "%yacc" return PERCENT_YACC;
{directive} {
complain_at (*loc, _("invalid directive: %s"), quote (yytext));
}
"=" return EQUAL;
- "|" rule_length = 0; return PIPE;
+ "|" return PIPE;
";" return SEMICOLON;
{id} {
- val->symbol = symbol_get (yytext, *loc);
+ val->uniqstr = uniqstr_new (yytext);
id_loc = *loc;
- increment_rule_length (*loc);
BEGIN SC_AFTER_IDENTIFIER;
}
/* Code in between braces. */
"{" {
- if (current_rule->action)
- grammar_midrule_action ();
STRING_GROW;
- token_type = BRACED_CODE;
braces_level = 0;
code_start = loc->start;
BEGIN SC_BRACED_CODE;
<SC_AFTER_IDENTIFIER>
{
":" {
- rule_length = 0;
*loc = id_loc;
BEGIN INITIAL;
return ID_COLON;
<SC_ESCAPED_STRING>
{
- "\"" {
+ "\""|"\n" {
+ if (yytext[0] == '\n')
+ unexpected_newline (token_start, "\"");
+ STRING_FINISH;
+ loc->start = token_start;
+ val->chars = last_string;
+ BEGIN INITIAL;
+ return STRING;
+ }
+ <<EOF>> {
+ unexpected_eof (token_start, "\"");
STRING_FINISH;
loc->start = token_start;
val->chars = last_string;
- increment_rule_length (*loc);
BEGIN INITIAL;
return STRING;
}
- \n unexpected_newline (token_start, "\""); BEGIN INITIAL;
- <<EOF>> unexpected_eof (token_start, "\""); BEGIN INITIAL;
}
/*----------------------------------------------------------.
<SC_ESCAPED_CHARACTER>
{
- "'" {
- unsigned char last_string_1;
+ "'"|"\n" {
+ if (yytext[0] == '\n')
+ unexpected_newline (token_start, "'");
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, false);
- last_string_1 = last_string[1];
- symbol_user_token_number_set (val->symbol, last_string_1, *loc);
+ val->character = last_string[1];
STRING_FREE;
- increment_rule_length (*loc);
BEGIN INITIAL;
- return ID;
+ return CHAR;
+ }
+ <<EOF>> {
+ unexpected_eof (token_start, "'");
+ STRING_FINISH;
+ loc->start = token_start;
+ if (strlen(last_string) > 1)
+ val->character = last_string[1];
+ else
+ val->character = last_string[0];
+ STRING_FREE;
+ BEGIN INITIAL;
+ return CHAR;
}
- \n unexpected_newline (token_start, "'"); BEGIN INITIAL;
- <<EOF>> unexpected_eof (token_start, "'"); BEGIN INITIAL;
}
<SC_ESCAPED_CHARACTER,SC_ESCAPED_STRING>
<SC_CHARACTER,SC_STRING>
{
- {splice}|\\{splice}[^\n$@\[\]] STRING_GROW;
+ {splice}|\\{splice}[^\n\[\]] STRING_GROW;
}
<SC_CHARACTER>
}
- /*---------------------------------------------------------------.
- | Scanning after %union etc., possibly followed by white space. |
- | For %union only, allow arbitrary C code to appear before the |
- | following brace, as an extension to POSIX. |
- `---------------------------------------------------------------*/
-
-<SC_PRE_CODE>
-{
- . {
- bool valid = yytext[0] == '{' || token_type == PERCENT_UNION;
- scanner_cursor.column -= mbsnwidth (yytext, yyleng, 0);
- yyless (0);
- if (valid)
- {
- braces_level = -1;
- code_start = loc->start;
- BEGIN SC_BRACED_CODE;
- }
- else
- {
- complain_at (*loc, _("missing `{' in %s"),
- token_name (token_type));
- obstack_sgrow (&obstack_for_string, "{}");
- STRING_FINISH;
- val->chars = last_string;
- BEGIN INITIAL;
- return token_type;
- }
- }
-
- <<EOF>> unexpected_eof (scanner_cursor, "{}"); BEGIN INITIAL;
-}
-
-
- /*---------------------------------------------------------------.
- | Scanning some code in braces (%union and actions). The initial |
- | "{" is already eaten. |
- `---------------------------------------------------------------*/
+ /*-----------------------------------------------------------.
+ | Scanning some code in braces (actions). The initial "{" is |
+ | already eaten. |
+ `-----------------------------------------------------------*/
<SC_BRACED_CODE>
{
"{"|"<"{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)
+ --braces_level;
+ if (braces_level < 0)
{
STRING_FINISH;
loc->start = code_start;
val->chars = last_string;
- increment_rule_length (*loc);
- last_braced_code_loc = *loc;
BEGIN INITIAL;
- return token_type;
+ return BRACED_CODE;
}
}
(as `<' `<%'). */
"<"{splice}"<" STRING_GROW;
- "$"("<"{tag}">")?(-?[0-9]+|"$") handle_dollar (token_type, yytext, *loc);
- "@"(-?[0-9]+|"$") handle_at (token_type, yytext, *loc);
-
- "$" {
- warn_at (*loc, _("stray `$'"));
- obstack_sgrow (&obstack_for_string, "$][");
- }
- "@" {
- warn_at (*loc, _("stray `@'"));
- obstack_sgrow (&obstack_for_string, "@@");
+ <<EOF>> {
+ unexpected_eof (code_start, "}");
+ STRING_FINISH;
+ loc->start = code_start;
+ val->chars = last_string;
+ BEGIN INITIAL;
+ return BRACED_CODE;
}
-
- <<EOF>> unexpected_eof (code_start, "}"); BEGIN INITIAL;
}
return PROLOGUE;
}
- <<EOF>> unexpected_eof (code_start, "%}"); BEGIN INITIAL;
+ <<EOF>> {
+ unexpected_eof (code_start, "%}");
+ STRING_FINISH;
+ loc->start = code_start;
+ val->chars = last_string;
+ BEGIN INITIAL;
+ return PROLOGUE;
+ }
}
}
- /*-----------------------------------------.
- | 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. |
`-----------------------------------------------------*/
%%
-/* 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;
-
-/* If BUF is null, add BUFSIZE (which in this case must be less than
- INT_MAX) to COLUMN; otherwise, add mbsnwidth (BUF, BUFSIZE, 0) to
- COLUMN. If an overflow occurs, or might occur but is undetectable,
- return INT_MAX. Assume COLUMN is nonnegative. */
-
-static inline int
-add_column_width (int column, char const *buf, size_t bufsize)
-{
- size_t width;
- unsigned int remaining_columns = INT_MAX - column;
-
- if (buf)
- {
- if (INT_MAX / 2 <= bufsize)
- return INT_MAX;
- width = mbsnwidth (buf, bufsize, 0);
- }
- else
- width = bufsize;
-
- return width <= remaining_columns ? column + width : INT_MAX;
-}
-
-/* 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 += line < INT_MAX;
- column = 1;
- p0 = p + 1;
- break;
-
- case '\t':
- column = add_column_width (column, p0, p - p0);
- column = add_column_width (column, NULL, 8 - ((column - 1) & 7));
- p0 = p + 1;
- break;
-
- default:
- break;
- }
-
- scanner_cursor.line = line;
- scanner_cursor.column = column = add_column_width (column, p0, p - p0);
-
- loc->end = scanner_cursor;
-
- if (line == INT_MAX && loc->start.line != INT_MAX)
- warn_at (*loc, _("line number overflow"));
- if (column == INT_MAX && loc->start.column != INT_MAX)
- warn_at (*loc, _("column number overflow"));
-}
-
-
/* 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. */
}
-/*------------------------------------------------------------------.
-| 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);
- current_rule->used = true;
- }
- else
- {
- long int num = strtol (cp, NULL, 10);
-
- if (1 - INT_MAX + rule_length <= num && num <= rule_length)
- {
- int n = num;
- if (max_left_semantic_context < 1 - n)
- max_left_semantic_context = 1 - n;
- if (!type_name && 0 < n)
- type_name = symbol_list_n_type_name_get (current_rule, loc, n);
- if (!type_name && typed)
- complain_at (loc, _("$%d of `%s' has no declared type"),
- n, current_rule->sym->tag);
- if (!type_name)
- type_name = "";
- obstack_fgrow3 (&obstack_for_string,
- "]b4_rhs_value(%d, %d, [%s])[",
- rule_length, n, type_name);
- symbol_list_n_used_set (current_rule, n, true);
- }
- else
- complain_at (loc, _("integer out of range: %s"), quote (text));
- }
-
- return true;
-}
-
-
-/*----------------------------------------------------------------.
-| Map `$?' 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 = strtol (cp, NULL, 10);
-
- if (1 - INT_MAX + rule_length <= num && num <= rule_length)
- {
- 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. |
warn_at (loc, _("line number overflow"));
lineno = INT_MAX;
}
- scanner_cursor.file = current_file = uniqstr_new (file);
- scanner_cursor.line = lineno;
- scanner_cursor.column = 1;
-}
-
-
-/*---------------------------------.
-| Report a rule that is too long. |
-`---------------------------------*/
-
-static void
-rule_length_overflow (location loc)
-{
- fatal_at (loc, _("rule is too long"));
+ current_file = uniqstr_new (file);
+ boundary_set (&scanner_cursor, current_file, lineno, 1);
}
`-------------------------*/
void
-scanner_initialize (void)
+gram_scanner_initialize (void)
{
obstack_init (&obstack_for_string);
}
`-----------------------------------------------*/
void
-scanner_free (void)
+gram_scanner_free (void)
{
obstack_free (&obstack_for_string, 0);
/* Reclaim Flex's buffers. */
projects / bison.git / blobdiff