Add first version of lexer/parser to git, update Makefile

2009-09-13 14:16:39 +02:00
parent 30ad7e93e7
commit 9dd975e974
3 changed files with 268 additions and 4 deletions
--- a/src/cfgparse.y
+++ b/src/cfgparse.y
@ -0,0 +1,193 @@
+%{
+#include <stdio.h>
+#include <string.h>
+#include <xcb/xcb.h>
+
+enum {
+        BIND_NONE = 0,
+        BIND_SHIFT = XCB_MOD_MASK_SHIFT,        /* (1 << 0) */
+        BIND_CONTROL = XCB_MOD_MASK_CONTROL,    /* (1 << 2) */
+        BIND_MOD1 = XCB_MOD_MASK_1,             /* (1 << 3) */
+        BIND_MOD2 = XCB_MOD_MASK_2,             /* (1 << 4) */
+        BIND_MOD3 = XCB_MOD_MASK_3,             /* (1 << 5) */
+        BIND_MOD4 = XCB_MOD_MASK_4,             /* (1 << 6) */
+        BIND_MOD5 = XCB_MOD_MASK_5,             /* (1 << 7) */
+        BIND_MODE_SWITCH = (1 << 8)
+};
+
+
+int yydebug = 1;
+
+void yyerror(const char *str)
+{
+        fprintf(stderr,"error: %s\n",str);
+}
+
+int yywrap()
+{
+        return 1;
+}
+
+#if 0
+main()
+{
+        yyparse();
+	printf("parsing done\n");
+}
+#endif
+
+%}
+
+%union {
+	int number;
+	char *string;
+}
+
+%token <number>NUMBER
+%token <string>WORD
+%token <string>STRING
+%token <string>STRING_NG
+%token <string>VARNAME
+%token <string>HEX
+%token TOKBIND
+%token TOKBINDSYM
+%token MODIFIER
+%token TOKCONTROL
+%token TOKSHIFT
+%token WHITESPACE
+%token TOKFLOATING_MODIFIER
+%token QUOTEDSTRING
+%token TOKWORKSPACE
+%token TOKSCREEN
+%token TOKASSIGN
+%token TOKSET
+%token TOKIPCSOCKET
+%token TOKEXEC
+%token TOKCOLOR
+%token TOKARROW
+
+%%
+
+lines: /* empty */
+        | lines WHITESPACE line
+	| lines line
+        ;
+
+line:
+        bind
+	| bindsym
+	| floating_modifier
+	| workspace
+	| assign
+	| set
+	| ipcsocket
+	| exec
+	| color
+        ;
+
+command:
+	STRING
+	;
+
+bind:
+        TOKBIND WHITESPACE binding_modifiers '+' NUMBER WHITESPACE command
+        {
+                printf("\tFound binding mod%d with key %d and command %s\n", $<number>3, $5, $<string>7);
+        }
+        ;
+
+bindsym:
+        TOKBINDSYM WHITESPACE binding_modifiers '+' WORD WHITESPACE command
+        {
+                printf("\tFound symbolic mod%d with key %s and command %s\n", $<number>3, $5, $<string>7);
+        }
+        ;
+
+floating_modifier:
+	TOKFLOATING_MODIFIER WHITESPACE binding_modifiers
+	{
+		printf("\tfloating modifier %d\n", $<number>3);
+	}
+	;
+
+workspace:
+	TOKWORKSPACE WHITESPACE NUMBER WHITESPACE TOKSCREEN WHITESPACE screen
+	{
+		printf("\t workspace %d to screen %d\n", $<number>3, $<number>7);
+	}
+	| TOKWORKSPACE WHITESPACE NUMBER WHITESPACE TOKSCREEN WHITESPACE screen WHITESPACE QUOTEDSTRING
+	{
+		printf("\t quoted: %s\n", $<string>9);
+	}
+	;
+
+screen:
+	NUMBER
+	;
+
+
+assign:
+	TOKASSIGN WHITESPACE window_class WHITESPACE optional_arrow NUMBER
+	{
+		printf("assignment of %s to %d\n", $<string>3, $<number>6);
+	}
+	;
+
+window_class:
+	QUOTEDSTRING
+	| STRING_NG
+	;
+
+optional_arrow:
+	/* NULL */
+	| TOKARROW WHITESPACE
+	;
+
+set:
+	TOKSET WHITESPACE variable WHITESPACE STRING
+	{
+		printf("set %s to %s\n", $<string>3, $<string>5);
+	}
+	;
+
+variable:
+	'$' WORD 	{ asprintf(&$<string>$, "$%s", $<string>2); }
+	| '$' VARNAME 	{ asprintf(&$<string>$, "$%s", $<string>2); }
+	;
+
+ipcsocket:
+	TOKIPCSOCKET WHITESPACE STRING
+	{
+		printf("ipc %s\n", $<string>3);
+	}
+	;
+
+exec:
+	TOKEXEC WHITESPACE STRING
+	{
+		printf("exec %s\n", $<string>3);
+	}
+	;
+
+color:
+	TOKCOLOR WHITESPACE '#' HEX
+	{
+		printf("color %s\n", $<string>4);
+	}
+	;
+
+
+binding_modifiers:
+	binding_modifier
+	|
+	binding_modifiers '+' binding_modifier
+	{
+		$<number>$ = $<number>1 | $<number>3;
+	}
+	;
+
+binding_modifier:
+	MODIFIER 	{ $<number>$ = $<number>1; }
+	| TOKCONTROL 	{ $<number>$ = BIND_CONTROL; }
+	| TOKSHIFT 	{ $<number>$ = BIND_SHIFT; }
+	;