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

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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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72
src/cfgparse.l
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@ -5,7 +5,7 @@
%{ %{
/* /*
* vim:ts=8:expandtab * vim:ts=4:sw=4:expandtab
* *
*/ */
#include <stdio.h> #include <stdio.h>
@ -30,22 +30,24 @@ int yycolumn = 1;
yycolumn += yyleng; \ 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) EOL (\r?\n)
%s BINDCODE_COND %s WANT_STRING
%s WANT_QSTRING
%s BINDSYM_COND %s BINDSYM_COND
%s BIND_AWS_COND
%s BINDSYM_AWS_COND
%s BIND_A2WS_COND
%s ASSIGN_COND %s ASSIGN_COND
%s COLOR_COND %s COLOR_COND
%s OUTPUT_COND %s OUTPUT_COND
%s OUTPUT_AWS_COND
%s WANT_QSTRING
%s FOR_WINDOW_COND %s FOR_WINDOW_COND
%s REQUIRE_WS %s EAT_WHITESPACE
%x BUFFER_LINE %x BUFFER_LINE
%% %%
@ -62,7 +64,7 @@ EOL (\r?\n)
<BUFFER_LINE>^[^\r\n]*/{EOL}? { <BUFFER_LINE>^[^\r\n]*/{EOL}? {
/* save whole line */ /* save whole line */
context->line_copy = strdup(yytext); context->line_copy = sstrdup(yytext);
yyless(0); yyless(0);
yy_pop_state(); yy_pop_state();
@ -72,7 +74,7 @@ EOL (\r?\n)
<FOR_WINDOW_COND>"]" { yy_pop_state(); return ']'; } <FOR_WINDOW_COND>"]" { yy_pop_state(); return ']'; }
<REQUIRE_WS>[ \t]* { yy_pop_state(); } <EAT_WHITESPACE>[ \t]* { yy_pop_state(); }
<WANT_QSTRING>\"[^\"]+\" { <WANT_QSTRING>\"[^\"]+\" {
yy_pop_state(); yy_pop_state();
/* strip quotes */ /* strip quotes */
@ -81,32 +83,32 @@ EOL (\r?\n)
yylval.string = copy; yylval.string = copy;
return STR; return STR;
} }
<BIND_A2WS_COND>[^\n]+ { BEGIN(INITIAL); yylval.string = strdup(yytext); return STR; } <WANT_STRING>[^\n]+ { BEGIN(INITIAL); yylval.string = sstrdup(yytext); return STR; }
<OUTPUT_AWS_COND>[a-zA-Z0-9_-]+ { yylval.string = strdup(yytext); return OUTPUT; } <OUTPUT_COND>[a-zA-Z0-9_-]+ { yylval.string = sstrdup(yytext); return OUTPUT; }
^[ \t]*#[^\n]* { return TOKCOMMENT; } ^[ \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; } [0-9]+ { yylval.number = atoi(yytext); return NUMBER; }
mode { return TOKMODE; } mode { return TOKMODE; }
bind { BEGIN(BINDCODE_COND); return TOKBINDCODE; } bind { yy_push_state(WANT_STRING); yy_push_state(EAT_WHITESPACE); yy_push_state(EAT_WHITESPACE); return TOKBINDCODE; }
bindcode { BEGIN(BINDCODE_COND); return TOKBINDCODE; } bindcode { yy_push_state(WANT_STRING); yy_push_state(EAT_WHITESPACE); yy_push_state(EAT_WHITESPACE); return TOKBINDCODE; }
bindsym { BEGIN(BINDSYM_COND); return TOKBINDSYM; } bindsym { yy_push_state(BINDSYM_COND); yy_push_state(EAT_WHITESPACE); return TOKBINDSYM; }
floating_modifier { BEGIN(INITIAL); return TOKFLOATING_MODIFIER; } floating_modifier { BEGIN(INITIAL); return TOKFLOATING_MODIFIER; }
workspace { BEGIN(INITIAL); return TOKWORKSPACE; } 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 { screen {
/* for compatibility until v3.φ */ /* for compatibility until v3.φ */
ELOG("Assignments to screens are DEPRECATED and will not work. " \ ELOG("Assignments to screens are DEPRECATED and will not work. " \
"Please replace them with assignments to outputs.\n"); "Please replace them with assignments to outputs.\n");
BEGIN(OUTPUT_COND); yy_push_state(OUTPUT_COND); yy_push_state(EAT_WHITESPACE);
return TOKOUTPUT; return TOKOUTPUT;
} }
terminal { BEGIN(BIND_AWS_COND); return TOKTERMINAL; } terminal { WS_STRING; return TOKTERMINAL; }
font { BEGIN(BIND_AWS_COND); return TOKFONT; } font { WS_STRING; return TOKFONT; }
assign { BEGIN(ASSIGN_COND); return TOKASSIGN; } assign { BEGIN(ASSIGN_COND); return TOKASSIGN; }
set[^\n]* { return TOKCOMMENT; } set[^\n]* { return TOKCOMMENT; }
ipc-socket { BEGIN(BIND_AWS_COND); return TOKIPCSOCKET; } ipc-socket { WS_STRING; return TOKIPCSOCKET; }
ipc_socket { BEGIN(BIND_AWS_COND); return TOKIPCSOCKET; } ipc_socket { WS_STRING; return TOKIPCSOCKET; }
restart_state { BEGIN(BIND_AWS_COND); return TOKRESTARTSTATE; } restart_state { WS_STRING; return TOKRESTARTSTATE; }
default_orientation { return TOK_ORIENTATION; } default_orientation { return TOK_ORIENTATION; }
horizontal { return TOK_HORIZ; } horizontal { return TOK_HORIZ; }
vertical { return TOK_VERT; } vertical { return TOK_VERT; }
@ -125,11 +127,11 @@ for_window {
/* Example: for_window [class="urxvt"] border none /* Example: for_window [class="urxvt"] border none
* *
* First, we wait for the ']' that finishes a match (FOR_WINDOW_COND) * 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 * And the rest of the line is parsed as a string
*/ */
yy_push_state(BIND_A2WS_COND); yy_push_state(WANT_STRING);
yy_push_state(REQUIRE_WS); yy_push_state(EAT_WHITESPACE);
yy_push_state(FOR_WINDOW_COND); yy_push_state(FOR_WINDOW_COND);
return TOK_FOR_WINDOW; return TOK_FOR_WINDOW;
} }
@ -140,7 +142,7 @@ tabbed { /* yylval.number = MODE_TABBED; */return TOK_T
stack-limit { return TOKSTACKLIMIT; } stack-limit { return TOKSTACKLIMIT; }
cols { /* yylval.number = STACK_LIMIT_COLS; */return TOKSTACKLIMIT; } cols { /* yylval.number = STACK_LIMIT_COLS; */return TOKSTACKLIMIT; }
rows { /* yylval.number = STACK_LIMIT_ROWS; */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.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 { BEGIN(COLOR_COND); yylval.color = &config.client.focused; return TOKCOLOR; }
client.focused_inactive { BEGIN(COLOR_COND); yylval.color = &config.client.focused_inactive; 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); BEGIN(INITIAL);
yy_push_state(BUFFER_LINE); yy_push_state(BUFFER_LINE);
} }
<BINDCODE_COND>[ \t]+ { BEGIN(BIND_AWS_COND); } <BINDSYM_COND>[ \t]+ { BEGIN(WANT_STRING); }
<BINDSYM_COND>[ \t]+ { BEGIN(BINDSYM_AWS_COND); } <OUTPUT_COND>[ \t]+ { BEGIN(WANT_STRING); }
<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); }
[ \t]+ { /* ignore whitespace */ ; } [ \t]+ { /* ignore whitespace */ ; }
\"[^\"]+\" { \"[^\"]+\" {
/* if ASSIGN_COND then */ /* if ASSIGN_COND then */
BEGIN(INITIAL); BEGIN(INITIAL);
/* yylval will be the string, but without quotes */ /* yylval will be the string, but without quotes */
char *copy = strdup(yytext+1); char *copy = sstrdup(yytext+1);
copy[strlen(copy)-1] = '\0'; copy[strlen(copy)-1] = '\0';
yylval.string = copy; yylval.string = copy;
return QUOTEDSTRING; return QUOTEDSTRING;
} }
<ASSIGN_COND>[^ \t]+ { BEGIN(INITIAL); yylval.string = strdup(yytext); return STR_NG; } <ASSIGN_COND>[^ \t]+ { BEGIN(INITIAL); yylval.string = sstrdup(yytext); return STR_NG; }
<BINDSYM_AWS_COND>[a-zA-Z0-9_]+ { yylval.string = strdup(yytext); return WORD; } <BINDSYM_COND>[a-zA-Z0-9_]+ { yylval.string = sstrdup(yytext); return WORD; }
[a-zA-Z]+ { yylval.string = strdup(yytext); return WORD; } [a-zA-Z]+ { yylval.string = sstrdup(yytext); return WORD; }
. { return (int)yytext[0]; } . { return (int)yytext[0]; }
<<EOF>> { <<EOF>> {