Initial commit

1 files changed, 95 insertions, 0 deletions

diff --git a/dm_parser.ragel b/dm_parser.ragel
new file mode 100644
index 0000000..80c873b
--- /dev/null
+++ b/dm_parser.ragel
@@ -0,0 +1,95 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+
+#include "dm.h"
+
+
+
+
+#define CTS(X) {if (!dm_current_tok)token_s = p; printf("%s ",#X);if (!dm_current_tok) dm_current_tok = TOK_##X;}
+#define CTE() {token_e = p;}
+#define TADD(T,S,E) {tl_add_tok(tl,T,S,E);}
+
+char *new_string( const char *start, const char *end )
+{
+	int str_s = end-start+1;
+	char *new_str=malloc( str_s+1 );
+	memcpy( new_str, start, str_s );
+	if ( new_str != NULL )
+		new_str[str_s]=0x0;
+	return new_str;
+}
+
+int print_token( char *s, char *e, int tok)
+{
+	char *p = new_string( s, e );
+	printf("t=%d,p=%s\n",tok,p);
+	free( p );
+	return 0;
+}
+
+
+%%{
+	machine dm;
+
+	
+	hex          = '0x' [a-fA-F0-9]+;
+	int          = [0-9]+;
+	newline      = '\n' >{CTS(NL)}    @{CTE()};
+	if           = 'if';
+	lbracket     = '(';
+	rbracket     = ')';
+	and          = '&';
+	range        = '-';
+	string       = ('"' ([a-zA-Z0-9' '])+ '"');
+
+	sp           = (' ' | '\t' | '\n');
+
+	main := |*
+		hex      {/*printf("hex = ");fwrite(ts,1,te-ts,stdout);printf("\n");*/TADD(TOK_HEX,ts,te);};
+		sp {};
+		string   {/*printf("str = ");fwrite(ts,1,te-ts,stdout);printf("\n");*/TADD(TOK_STR,ts,te);};
+		int      {/*printf("int = ");fwrite(ts,1,te-ts,stdout);printf("\n");*/TADD(TOK_INT,ts,te);};
+		if       {/*printf("if  = ");fwrite(ts,1,te-ts,stdout);printf("\n");*/TADD(TOK_IF,ts,te);};
+		lbracket {/*printf("lbr = ");fwrite(ts,1,te-ts,stdout);printf("\n");*/TADD(TOK_LBR,ts,te);};
+		rbracket {/*printf("rbr = ");fwrite(ts,1,te-ts,stdout);printf("\n");*/TADD(TOK_RBR,ts,te);};
+		and      {/*printf("and = ");fwrite(ts,1,te-ts,stdout);printf("\n");*/TADD(TOK_EAND,ts,te);};
+		range    {/*printf("range = ");fwrite(ts,1,te-ts,stdout);printf("\n");*/TADD(TOK_RANGE,ts,te);};
+	*|;
+
+	write data;
+}%%
+
+int parse_dm( token_list *tl, const char *str )
+{
+	static uint8_t cs;
+	const int stacksize = 10;
+	int res=0, *top=0, *stack=NULL, act=0;
+	stack = malloc( sizeof(stack)*stacksize );
+	char *p=(char *)str, *pe = (char *)str + strlen( str ), *eof=NULL;
+	char *ts, *te = 0;
+
+	/*
+	variables used in state machine
+	*/
+	char *token_s=NULL, *token_e=NULL;
+	char *value_s=NULL, *value_e=NULL;
+	int  token_type=0;
+	int  dm_current_tok = TOK_NONE;
+
+	%%write init;
+	%%write exec;
+
+	if ( cs == dm_error )
+	{
+		printf("ERR state [%d] pos[%d]:[%s]\n", res, p-str, p);
+		res = -1;
+	}
+
+	return res;
+}
+
+
+