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|
%{
// $Id$
// Sample lexical analysis for regular expression subset. Must be
// compiled with FLEX and an ANSI C++ compiler.
// Lexical tokens values defined by YACC.
#include "ace/Svc_Conf.h"
#include "ace/Svc_Conf_Tokens.h"
ACE_RCSID (ace,
Svc_Conf_l,
"$Id$")
// Keeps track of the current line for debugging output.
int yylineno = 1;
// Array that implements the underlying lexer buffer stack.
YY_BUFFER_STATE yybuffer_stack[ACE_SERVICE_DIRECTIVE_STACK_DEPTH];
// Array index of the buffer currently in use.
int yy_stack_index = 0;
#define token(x) x
%}
%s PARAMETERS
%s NORMAL
letter [a-zA-Z_]
letter_or_digit [a-zA-Z_0-9]
digit [0-9]
ident {letter}{letter_or_digit}*
pathname ([A-Za-z\%]:)?[a-zA-Z_0-9/\%\.\\~-]+
symbol [ -~]
string (\"{symbol}*\"|\'{symbol}*\')
white_space [ \t]
newline \n
other .
%%
^#{other}*$ ; /* EMPTY */
dynamic { return token (ACE_DYNAMIC); }
static { return token (ACE_STATIC); }
suspend { return token (ACE_SUSPEND); }
resume { return token (ACE_RESUME); }
remove { return token (ACE_REMOVE); }
stream { return token (ACE_USTREAM); }
Module { return token (ACE_MODULE_T); }
Service_Object { return token (ACE_SVC_OBJ_T); }
STREAM { return token (ACE_STREAM_T); }
active { return token (ACE_ACTIVE); }
inactive { return token (ACE_INACTIVE); }
":" { return token (ACE_COLON); }
"*" { return token (ACE_STAR); }
"(" { return token (ACE_LPAREN); }
")" { return token (ACE_RPAREN); }
"{" { return token (ACE_LBRACE); }
"}" { return token (ACE_RBRACE); }
{string} { // Check for first type of string, i.e.,
// "double quotes" delimited.
char *s = strrchr (yytext, '"');
if (s == 0)
// Check for second type of string, i.e.,
// 'single quotes' delimited.
s = strrchr (yytext, '\'');
ACE_ASSERT (s != 0);
// Eliminate the opening and closing double or
// single quotes.
*s = '\0';
yyleng -= 1;
yylval->ident_ = ace_obstack->copy (yytext + 1, yyleng);
return token (ACE_STRING); }
{ident} {
yylval->ident_ = ace_obstack->copy (yytext, yyleng);
return token (ACE_IDENT);
}
{pathname} {
yylval->ident_ = ace_obstack->copy (yytext, yyleng);
return token (ACE_PATHNAME);
}
{white_space}+ ; /* EMPTY */
{newline} { yylineno++; }
{other} { ACE_ERROR ((LM_ERROR,
ACE_LIB_TEXT ("unknown character = (%d"),
*yytext));
if (ACE_OS::ace_isprint (*yytext))
ACE_ERROR ((LM_ERROR, ACE_LIB_TEXT ("|%c"), *yytext));
ACE_ERROR ((LM_ERROR, ACE_LIB_TEXT (")\n")));
}
<<EOF>> { yyterminate(); }
%%
int
yywrap (void)
{
::fflush (yyin);
yytext[0] = '#';
yyleng = 0;
return 1;
}
void
yy_push_buffer (FILE *file)
{
// External synchronization is required.
if (yy_stack_index >= ACE_SERVICE_DIRECTIVE_STACK_DEPTH)
{
ACE_ERROR ((LM_ERROR,
"(%P|%t) Service Configurator directive nesting "
"is too deep.\n"
"(%P|%t) Consider increasing value of "
"ACE_SERVICE_DIRECTIVE_STACK_DEPTH.\n"));
// Not much we can do, so resort to flushing the current buffer
// and switch to the supplied stream.
yyrestart (file);
}
else
{
yybuffer_stack[yy_stack_index++] = YY_CURRENT_BUFFER;
yy_switch_to_buffer (yy_create_buffer (file, YY_BUF_SIZE));
}
}
void
yy_push_buffer (const char *directive)
{
// External synchronization is required.
if (yy_stack_index >= ACE_SERVICE_DIRECTIVE_STACK_DEPTH)
{
ACE_ERROR ((LM_ERROR,
"(%P|%t) Service Configurator directive nesting "
"is too deep.\n"
"(%P|%t) Consider increasing value of "
"ACE_SERVICE_DIRECTIVE_STACK_DEPTH.\n"));
// Not much we can do.
}
else
{
yybuffer_stack[yy_stack_index++] = YY_CURRENT_BUFFER;
// yy_scan_string() already switches the buffer so setting
// YY_CURRENT_BUFFER here is a bit redundant. No biggy.
YY_CURRENT_BUFFER = yy_scan_string (directive);
}
}
void
yy_pop_buffer (void)
{
// External synchronization is required.
if (--yy_stack_index >= 0)
{
yy_delete_buffer (YY_CURRENT_BUFFER);
yy_switch_to_buffer (yybuffer_stack[yy_stack_index]);
}
}
|
