[svn-commits] trunk r22988 - in /trunk/pbx/ael: ael.flex ael_lex.c
svn-commits at lists.digium.com
svn-commits at lists.digium.com
Thu Apr 27 13:08:43 MST 2006
Author: rizzo
Date: Thu Apr 27 15:08:42 2006
New Revision: 22988
URL: http://svn.digium.com/view/asterisk?rev=22988&view=rev
Log:
document variable and options used.
Modified:
trunk/pbx/ael/ael.flex
trunk/pbx/ael/ael_lex.c
Modified: trunk/pbx/ael/ael.flex
URL: http://svn.digium.com/view/asterisk/trunk/pbx/ael/ael.flex?rev=22988&r1=22987&r2=22988&view=diff
==============================================================================
--- trunk/pbx/ael/ael.flex (original)
+++ trunk/pbx/ael/ael.flex Thu Apr 27 15:08:42 2006
@@ -29,30 +29,51 @@
#include "ael/ael.tab.h"
#include "asterisk/ael_structs.h"
+/*
+ * A stack to keep track of matching brackets ( [ { } ] )
+ */
static char pbcstack[400]; /* XXX missing size checks */
static int pbcpos = 0;
static int parencount = 0;
static int commaout = 0;
+
+/*
+ * current line, column and filename, updated as we read the input.
+ */
static int my_lineno = 1; /* current line in the source */
static int my_col = 0; /* current column in the source */
-char *my_file = 0; /* used also in the bison code */
-char *prev_word;
+char *my_file = 0; /* used also in the bison code */
+char *prev_word; /* XXX document it */
+
#define MAX_INCLUDE_DEPTH 50
+/*
+ * flex is not too smart, and generates global functions
+ * without prototypes so the compiler may complain.
+ * To avoid that, we declare the prototypes here,
+ * even though these functions are not used.
+ */
int ael_yyget_column (yyscan_t yyscanner);
void ael_yyset_column (int column_no , yyscan_t yyscanner);
+
int ael_yyparse (struct parse_io *);
static void pbcpush(char x);
static int pbcpop(char x);
static void pbcwhere(const char *text, int *line, int *col );
+/*
+ * A stack to process include files.
+ * As we switch into the new file we need to store the previous
+ * state to restore it later.
+ */
struct stackelement {
char *fname;
int lineno;
int colno;
YY_BUFFER_STATE bufstate;
};
+
static struct stackelement include_stack[MAX_INCLUDE_DEPTH];
static int include_stack_index = 0;
@@ -82,15 +103,28 @@
} while (0)
%}
+/* %x describes the contexts we have: paren, semic and argg, plus INITIAL */
%x paren semic argg
+
+/* prefix used for various globally-visible functions and variables.
+ * This renames also yywrap, but since we do not use it, we just
+ * add option noyywrap to remove it.
+ */
%option prefix="ael_yy"
+%option noyywrap
+
+/* option batch gives a bit more performance if we are using it in
+ * a non-interactive mode. We probably don't care much.
+ */
%option batch
+
+/* filename to be used instead of lex.yy.c */
%option outfile="ael_lex.c"
+
%option reentrant
%option bison-bridge
%option bison-locations
/* %option yylineno I've tried hard, but haven't been able to use this */
-%option noyywrap
NOPARENS [^()\[\]\{\}]*
Modified: trunk/pbx/ael/ael_lex.c
URL: http://svn.digium.com/view/asterisk/trunk/pbx/ael/ael_lex.c?rev=22988&r1=22987&r2=22988&view=diff
==============================================================================
--- trunk/pbx/ael/ael_lex.c (original)
+++ trunk/pbx/ael/ael_lex.c Thu Apr 27 15:08:42 2006
@@ -658,30 +658,51 @@
#include "ael/ael.tab.h"
#include "asterisk/ael_structs.h"
+/*
+ * A stack to keep track of matching brackets ( [ { } ] )
+ */
static char pbcstack[400]; /* XXX missing size checks */
static int pbcpos = 0;
static int parencount = 0;
static int commaout = 0;
+
+/*
+ * current line, column and filename, updated as we read the input.
+ */
static int my_lineno = 1; /* current line in the source */
static int my_col = 0; /* current column in the source */
-char *my_file = 0; /* used also in the bison code */
-char *prev_word;
+char *my_file = 0; /* used also in the bison code */
+char *prev_word; /* XXX document it */
+
#define MAX_INCLUDE_DEPTH 50
+/*
+ * flex is not too smart, and generates global functions
+ * without prototypes so the compiler may complain.
+ * To avoid that, we declare the prototypes here,
+ * even though these functions are not used.
+ */
int ael_yyget_column (yyscan_t yyscanner);
void ael_yyset_column (int column_no , yyscan_t yyscanner);
+
int ael_yyparse (struct parse_io *);
static void pbcpush(char x);
static int pbcpop(char x);
static void pbcwhere(const char *text, int *line, int *col );
+/*
+ * A stack to process include files.
+ * As we switch into the new file we need to store the previous
+ * state to restore it later.
+ */
struct stackelement {
char *fname;
int lineno;
int colno;
YY_BUFFER_STATE bufstate;
};
+
static struct stackelement include_stack[MAX_INCLUDE_DEPTH];
static int include_stack_index = 0;
@@ -709,9 +730,18 @@
yylloc->last_line = my_lineno; \
yylloc->last_column = my_col; \
} while (0)
-
+/* %x describes the contexts we have: paren, semic and argg, plus INITIAL */
+
+/* prefix used for various globally-visible functions and variables.
+ * This renames also ael_yywrap, but since we do not use it, we just
+ * add option noyywrap to remove it.
+ */
+/* option batch gives a bit more performance if we are using it in
+ * a non-interactive mode. We probably don't care much.
+ */
+/* filename to be used instead of lex.yy.c */
/* %option yylineno I've tried hard, but haven't been able to use this */
-#line 715 "ael_lex.c"
+#line 745 "ael_lex.c"
#define INITIAL 0
#define paren 1
@@ -951,10 +981,10 @@
register int yy_act;
struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
-#line 101 "ael.flex"
-
-
-#line 958 "ael_lex.c"
+#line 135 "ael.flex"
+
+
+#line 988 "ael_lex.c"
yylval = yylval_param;
@@ -1045,218 +1075,218 @@
case 1:
YY_RULE_SETUP
-#line 103 "ael.flex"
+#line 137 "ael.flex"
{ STORE_POS; return LC;}
YY_BREAK
case 2:
YY_RULE_SETUP
-#line 104 "ael.flex"
+#line 138 "ael.flex"
{ STORE_POS; return RC;}
YY_BREAK
case 3:
YY_RULE_SETUP
-#line 105 "ael.flex"
+#line 139 "ael.flex"
{ STORE_POS; return LP;}
YY_BREAK
case 4:
YY_RULE_SETUP
-#line 106 "ael.flex"
+#line 140 "ael.flex"
{ STORE_POS; return RP;}
YY_BREAK
case 5:
YY_RULE_SETUP
-#line 107 "ael.flex"
+#line 141 "ael.flex"
{ STORE_POS; return SEMI;}
YY_BREAK
case 6:
YY_RULE_SETUP
-#line 108 "ael.flex"
+#line 142 "ael.flex"
{ STORE_POS; return EQ;}
YY_BREAK
case 7:
YY_RULE_SETUP
-#line 109 "ael.flex"
+#line 143 "ael.flex"
{ STORE_POS; return COMMA;}
YY_BREAK
case 8:
YY_RULE_SETUP
-#line 110 "ael.flex"
+#line 144 "ael.flex"
{ STORE_POS; return COLON;}
YY_BREAK
case 9:
YY_RULE_SETUP
-#line 111 "ael.flex"
+#line 145 "ael.flex"
{ STORE_POS; return AMPER;}
YY_BREAK
case 10:
YY_RULE_SETUP
-#line 112 "ael.flex"
+#line 146 "ael.flex"
{ STORE_POS; return BAR;}
YY_BREAK
case 11:
YY_RULE_SETUP
-#line 113 "ael.flex"
+#line 147 "ael.flex"
{ STORE_POS; return EXTENMARK;}
YY_BREAK
case 12:
YY_RULE_SETUP
-#line 114 "ael.flex"
+#line 148 "ael.flex"
{ STORE_POS; return AT;}
YY_BREAK
case 13:
YY_RULE_SETUP
-#line 115 "ael.flex"
+#line 149 "ael.flex"
{/*comment*/}
YY_BREAK
case 14:
YY_RULE_SETUP
-#line 116 "ael.flex"
+#line 150 "ael.flex"
{ STORE_POS; return KW_CONTEXT;}
YY_BREAK
case 15:
YY_RULE_SETUP
-#line 117 "ael.flex"
+#line 151 "ael.flex"
{ STORE_POS; return KW_ABSTRACT;}
YY_BREAK
case 16:
YY_RULE_SETUP
-#line 118 "ael.flex"
+#line 152 "ael.flex"
{ STORE_POS; return KW_MACRO;};
YY_BREAK
case 17:
YY_RULE_SETUP
-#line 119 "ael.flex"
+#line 153 "ael.flex"
{ STORE_POS; return KW_GLOBALS;}
YY_BREAK
case 18:
YY_RULE_SETUP
-#line 120 "ael.flex"
+#line 154 "ael.flex"
{ STORE_POS; return KW_IGNOREPAT;}
YY_BREAK
case 19:
YY_RULE_SETUP
-#line 121 "ael.flex"
+#line 155 "ael.flex"
{ STORE_POS; return KW_SWITCH;}
YY_BREAK
case 20:
YY_RULE_SETUP
-#line 122 "ael.flex"
+#line 156 "ael.flex"
{ STORE_POS; return KW_IF;}
YY_BREAK
case 21:
YY_RULE_SETUP
-#line 123 "ael.flex"
+#line 157 "ael.flex"
{ STORE_POS; return KW_IFTIME;}
YY_BREAK
case 22:
YY_RULE_SETUP
-#line 124 "ael.flex"
+#line 158 "ael.flex"
{ STORE_POS; return KW_RANDOM;}
YY_BREAK
case 23:
YY_RULE_SETUP
-#line 125 "ael.flex"
+#line 159 "ael.flex"
{ STORE_POS; return KW_REGEXTEN;}
YY_BREAK
case 24:
YY_RULE_SETUP
-#line 126 "ael.flex"
+#line 160 "ael.flex"
{ STORE_POS; return KW_HINT;}
YY_BREAK
case 25:
YY_RULE_SETUP
-#line 127 "ael.flex"
+#line 161 "ael.flex"
{ STORE_POS; return KW_ELSE;}
YY_BREAK
case 26:
YY_RULE_SETUP
-#line 128 "ael.flex"
+#line 162 "ael.flex"
{ STORE_POS; return KW_GOTO;}
YY_BREAK
case 27:
YY_RULE_SETUP
-#line 129 "ael.flex"
+#line 163 "ael.flex"
{ STORE_POS; return KW_JUMP;}
YY_BREAK
case 28:
YY_RULE_SETUP
-#line 130 "ael.flex"
+#line 164 "ael.flex"
{ STORE_POS; return KW_RETURN;}
YY_BREAK
case 29:
YY_RULE_SETUP
-#line 131 "ael.flex"
+#line 165 "ael.flex"
{ STORE_POS; return KW_BREAK;}
YY_BREAK
case 30:
YY_RULE_SETUP
-#line 132 "ael.flex"
+#line 166 "ael.flex"
{ STORE_POS; return KW_CONTINUE;}
YY_BREAK
case 31:
YY_RULE_SETUP
-#line 133 "ael.flex"
+#line 167 "ael.flex"
{ STORE_POS; return KW_FOR;}
YY_BREAK
case 32:
YY_RULE_SETUP
-#line 134 "ael.flex"
+#line 168 "ael.flex"
{ STORE_POS; return KW_WHILE;}
YY_BREAK
case 33:
YY_RULE_SETUP
-#line 135 "ael.flex"
+#line 169 "ael.flex"
{ STORE_POS; return KW_CASE;}
YY_BREAK
case 34:
YY_RULE_SETUP
-#line 136 "ael.flex"
+#line 170 "ael.flex"
{ STORE_POS; return KW_DEFAULT;}
YY_BREAK
case 35:
YY_RULE_SETUP
-#line 137 "ael.flex"
+#line 171 "ael.flex"
{ STORE_POS; return KW_PATTERN;}
YY_BREAK
case 36:
YY_RULE_SETUP
-#line 138 "ael.flex"
+#line 172 "ael.flex"
{ STORE_POS; return KW_CATCH;}
YY_BREAK
case 37:
YY_RULE_SETUP
-#line 139 "ael.flex"
+#line 173 "ael.flex"
{ STORE_POS; return KW_SWITCHES;}
YY_BREAK
case 38:
YY_RULE_SETUP
-#line 140 "ael.flex"
+#line 174 "ael.flex"
{ STORE_POS; return KW_ESWITCHES;}
YY_BREAK
case 39:
YY_RULE_SETUP
-#line 141 "ael.flex"
+#line 175 "ael.flex"
{ STORE_POS; return KW_INCLUDES;}
YY_BREAK
case 40:
/* rule 40 can match eol */
YY_RULE_SETUP
-#line 143 "ael.flex"
+#line 177 "ael.flex"
{ my_lineno++; my_col = 0; }
YY_BREAK
case 41:
YY_RULE_SETUP
-#line 144 "ael.flex"
+#line 178 "ael.flex"
{ my_col += yyleng; }
YY_BREAK
case 42:
YY_RULE_SETUP
-#line 145 "ael.flex"
+#line 179 "ael.flex"
{ my_col += 8-(my_col%8); }
YY_BREAK
case 43:
YY_RULE_SETUP
-#line 147 "ael.flex"
+#line 181 "ael.flex"
{
STORE_POS;
yylval->str = strdup(yytext);
@@ -1267,7 +1297,7 @@
case 44:
/* rule 44 can match eol */
YY_RULE_SETUP
-#line 157 "ael.flex"
+#line 191 "ael.flex"
{
STORE_START;
if ( pbcpop(')') ) { /* error */
@@ -1295,7 +1325,7 @@
case 45:
/* rule 45 can match eol */
YY_RULE_SETUP
-#line 181 "ael.flex"
+#line 215 "ael.flex"
{
char c = yytext[yyleng-1];
STORE_START;
@@ -1308,7 +1338,7 @@
case 46:
/* rule 46 can match eol */
YY_RULE_SETUP
-#line 190 "ael.flex"
+#line 224 "ael.flex"
{
char c = yytext[yyleng-1];
STORE_START;
@@ -1326,7 +1356,7 @@
case 47:
/* rule 47 can match eol */
YY_RULE_SETUP
-#line 204 "ael.flex"
+#line 238 "ael.flex"
{
char c = yytext[yyleng-1];
STORE_START;
@@ -1339,7 +1369,7 @@
case 48:
/* rule 48 can match eol */
YY_RULE_SETUP
-#line 213 "ael.flex"
+#line 247 "ael.flex"
{
STORE_START;
if ( pbcpop(')') ) { /* error */
@@ -1374,7 +1404,7 @@
case 49:
/* rule 49 can match eol */
YY_RULE_SETUP
-#line 244 "ael.flex"
+#line 278 "ael.flex"
{
if( parencount != 0) {
/* printf("Folding in a comma!\n"); */
@@ -1406,7 +1436,7 @@
case 50:
/* rule 50 can match eol */
YY_RULE_SETUP
-#line 272 "ael.flex"
+#line 306 "ael.flex"
{
char c = yytext[yyleng-1];
STORE_START;
@@ -1423,7 +1453,7 @@
case 51:
/* rule 51 can match eol */
YY_RULE_SETUP
-#line 287 "ael.flex"
+#line 321 "ael.flex"
{
char c = yytext[yyleng-1];
STORE_START;
@@ -1434,7 +1464,7 @@
case 52:
/* rule 52 can match eol */
YY_RULE_SETUP
-#line 294 "ael.flex"
+#line 328 "ael.flex"
{
char c = yytext[yyleng-1];
STORE_START;
@@ -1451,7 +1481,7 @@
case 53:
/* rule 53 can match eol */
YY_RULE_SETUP
-#line 307 "ael.flex"
+#line 341 "ael.flex"
{
STORE_START;
STORE_END;
@@ -1466,7 +1496,7 @@
case 54:
/* rule 54 can match eol */
YY_RULE_SETUP
-#line 318 "ael.flex"
+#line 352 "ael.flex"
{
FILE *in1;
char fnamebuf[1024],*p1,*p2;
@@ -1533,7 +1563,7 @@
case YY_STATE_EOF(paren):
case YY_STATE_EOF(semic):
case YY_STATE_EOF(argg):
-#line 380 "ael.flex"
+#line 414 "ael.flex"
{
if ( --include_stack_index < 0 ) {
yyterminate();
@@ -1549,10 +1579,10 @@
YY_BREAK
case 55:
YY_RULE_SETUP
-#line 393 "ael.flex"
+#line 427 "ael.flex"
ECHO;
YY_BREAK
-#line 1556 "ael_lex.c"
+#line 1586 "ael_lex.c"
case YY_END_OF_BUFFER:
{
@@ -2682,7 +2712,7 @@
#define YYTABLES_NAME "yytables"
-#line 393 "ael.flex"
+#line 427 "ael.flex"
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