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cfgparse.l: kill a few states by using the stack

This commit is contained in:
Michael Stapelberg 2011-05-22 22:08:40 +02:00
parent 1d6447187c
commit c23f3b45fc
1 changed files with 38 additions and 40 deletions
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78
src/cfgparse.l
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@ -5,7 +5,7 @@
%{
/*
* vim:ts=8:expandtab
* vim:ts=4:sw=4:expandtab
*
*/
#include <stdio.h>
@ -30,22 +30,24 @@ int yycolumn = 1;
yycolumn += yyleng; \
}
/* macro to first eat whitespace, then expect a string */
#define WS_STRING do { \
yy_push_state(WANT_STRING); \
yy_push_state(EAT_WHITESPACE); \
} while (0)
%}
EOL (\r?\n)
%s BINDCODE_COND
%s WANT_STRING
%s WANT_QSTRING
%s BINDSYM_COND
%s BIND_AWS_COND
%s BINDSYM_AWS_COND
%s BIND_A2WS_COND
%s ASSIGN_COND
%s COLOR_COND
%s OUTPUT_COND
%s OUTPUT_AWS_COND
%s WANT_QSTRING
%s FOR_WINDOW_COND
%s REQUIRE_WS
%s EAT_WHITESPACE
%x BUFFER_LINE
%%
@ -62,7 +64,7 @@ EOL (\r?\n)
<BUFFER_LINE>^[^\r\n]*/{EOL}? {
/* save whole line */
context->line_copy = strdup(yytext);
context->line_copy = sstrdup(yytext);
yyless(0);
yy_pop_state();
@ -71,42 +73,42 @@ EOL (\r?\n)
}
<FOR_WINDOW_COND>"]" { yy_pop_state(); return ']'; }
<REQUIRE_WS>[ \t]* { yy_pop_state(); }
<WANT_QSTRING>\"[^\"]+\" {
<FOR_WINDOW_COND>"]" { yy_pop_state(); return ']'; }
<EAT_WHITESPACE>[ \t]* { yy_pop_state(); }
<WANT_QSTRING>\"[^\"]+\" {
yy_pop_state();
/* strip quotes */
char *copy = sstrdup(yytext+1);
copy[strlen(copy)-1] = '\0';
yylval.string = copy;
return STR;
}
<BIND_A2WS_COND>[^\n]+ { BEGIN(INITIAL); yylval.string = strdup(yytext); return STR; }
<OUTPUT_AWS_COND>[a-zA-Z0-9_-]+ { yylval.string = strdup(yytext); return OUTPUT; }
}
<WANT_STRING>[^\n]+ { BEGIN(INITIAL); yylval.string = sstrdup(yytext); return STR; }
<OUTPUT_COND>[a-zA-Z0-9_-]+ { yylval.string = sstrdup(yytext); return OUTPUT; }
^[ \t]*#[^\n]* { return TOKCOMMENT; }
<COLOR_COND>[0-9a-fA-F]+ { yylval.string = strdup(yytext); return HEX; }
<COLOR_COND>[0-9a-fA-F]+ { yylval.string = sstrdup(yytext); return HEX; }
[0-9]+ { yylval.number = atoi(yytext); return NUMBER; }
mode { return TOKMODE; }
bind { BEGIN(BINDCODE_COND); return TOKBINDCODE; }
bindcode { BEGIN(BINDCODE_COND); return TOKBINDCODE; }
bindsym { BEGIN(BINDSYM_COND); return TOKBINDSYM; }
bind { yy_push_state(WANT_STRING); yy_push_state(EAT_WHITESPACE); yy_push_state(EAT_WHITESPACE); return TOKBINDCODE; }
bindcode { yy_push_state(WANT_STRING); yy_push_state(EAT_WHITESPACE); yy_push_state(EAT_WHITESPACE); return TOKBINDCODE; }
bindsym { yy_push_state(BINDSYM_COND); yy_push_state(EAT_WHITESPACE); return TOKBINDSYM; }
floating_modifier { BEGIN(INITIAL); return TOKFLOATING_MODIFIER; }
workspace { BEGIN(INITIAL); return TOKWORKSPACE; }
output { BEGIN(OUTPUT_COND); return TOKOUTPUT; }
output { yy_push_state(OUTPUT_COND); yy_push_state(EAT_WHITESPACE); return TOKOUTPUT; }
screen {
/* for compatibility until v3.φ */
ELOG("Assignments to screens are DEPRECATED and will not work. " \
"Please replace them with assignments to outputs.\n");
BEGIN(OUTPUT_COND);
yy_push_state(OUTPUT_COND); yy_push_state(EAT_WHITESPACE);
return TOKOUTPUT;
}
terminal { BEGIN(BIND_AWS_COND); return TOKTERMINAL; }
font { BEGIN(BIND_AWS_COND); return TOKFONT; }
terminal { WS_STRING; return TOKTERMINAL; }
font { WS_STRING; return TOKFONT; }
assign { BEGIN(ASSIGN_COND); return TOKASSIGN; }
set[^\n]* { return TOKCOMMENT; }
ipc-socket { BEGIN(BIND_AWS_COND); return TOKIPCSOCKET; }
ipc_socket { BEGIN(BIND_AWS_COND); return TOKIPCSOCKET; }
restart_state { BEGIN(BIND_AWS_COND); return TOKRESTARTSTATE; }
ipc-socket { WS_STRING; return TOKIPCSOCKET; }
ipc_socket { WS_STRING; return TOKIPCSOCKET; }
restart_state { WS_STRING; return TOKRESTARTSTATE; }
default_orientation { return TOK_ORIENTATION; }
horizontal { return TOK_HORIZ; }
vertical { return TOK_VERT; }
@ -125,11 +127,11 @@ for_window {
/* Example: for_window [class="urxvt"] border none
*
* First, we wait for the ']' that finishes a match (FOR_WINDOW_COND)
* Then, we require a whitespace (REQUIRE_WS)
* Then, we require a whitespace (EAT_WHITESPACE)
* And the rest of the line is parsed as a string
*/
yy_push_state(BIND_A2WS_COND);
yy_push_state(REQUIRE_WS);
yy_push_state(WANT_STRING);
yy_push_state(EAT_WHITESPACE);
yy_push_state(FOR_WINDOW_COND);
return TOK_FOR_WINDOW;
}
@ -140,7 +142,7 @@ tabbed { /* yylval.number = MODE_TABBED; */return TOK_T
stack-limit { return TOKSTACKLIMIT; }
cols { /* yylval.number = STACK_LIMIT_COLS; */return TOKSTACKLIMIT; }
rows { /* yylval.number = STACK_LIMIT_ROWS; */return TOKSTACKLIMIT; }
exec { BEGIN(BIND_AWS_COND); return TOKEXEC; }
exec { WS_STRING; return TOKEXEC; }
client.background { BEGIN(COLOR_COND); yylval.single_color = &config.client.background; return TOKSINGLECOLOR; }
client.focused { BEGIN(COLOR_COND); yylval.color = &config.client.focused; return TOKCOLOR; }
client.focused_inactive { BEGIN(COLOR_COND); yylval.color = &config.client.focused_inactive; return TOKCOLOR; }
@ -172,25 +174,21 @@ title { yy_push_state(WANT_QSTRING); return TOK_TITLE;
BEGIN(INITIAL);
yy_push_state(BUFFER_LINE);
}
<BINDCODE_COND>[ \t]+ { BEGIN(BIND_AWS_COND); }
<BINDSYM_COND>[ \t]+ { BEGIN(BINDSYM_AWS_COND); }
<BIND_AWS_COND>[ \t]+ { BEGIN(BIND_A2WS_COND); }
<BINDSYM_AWS_COND>[ \t]+ { BEGIN(BIND_A2WS_COND); }
<OUTPUT_COND>[ \t]+ { BEGIN(OUTPUT_AWS_COND); }
<OUTPUT_AWS_COND>[ \t]+ { BEGIN(BIND_A2WS_COND); }
<BINDSYM_COND>[ \t]+ { BEGIN(WANT_STRING); }
<OUTPUT_COND>[ \t]+ { BEGIN(WANT_STRING); }
[ \t]+ { /* ignore whitespace */ ; }
\"[^\"]+\" {
/* if ASSIGN_COND then */
BEGIN(INITIAL);
/* yylval will be the string, but without quotes */
char *copy = strdup(yytext+1);
char *copy = sstrdup(yytext+1);
copy[strlen(copy)-1] = '\0';
yylval.string = copy;
return QUOTEDSTRING;
}
<ASSIGN_COND>[^ \t]+ { BEGIN(INITIAL); yylval.string = strdup(yytext); return STR_NG; }
<BINDSYM_AWS_COND>[a-zA-Z0-9_]+ { yylval.string = strdup(yytext); return WORD; }
[a-zA-Z]+ { yylval.string = strdup(yytext); return WORD; }
<ASSIGN_COND>[^ \t]+ { BEGIN(INITIAL); yylval.string = sstrdup(yytext); return STR_NG; }
<BINDSYM_COND>[a-zA-Z0-9_]+ { yylval.string = sstrdup(yytext); return WORD; }
[a-zA-Z]+ { yylval.string = sstrdup(yytext); return WORD; }
. { return (int)yytext[0]; }
<<EOF>> {