1 files changed, 81 insertions, 0 deletions
diff --git a/sem3/osc/miniproject/cnasm/regn.y b/sem3/osc/miniproject/cnasm/regn.y
new file mode 100644
index 0000000..b72d440
--- /dev/null
+++ b/sem3/osc/miniproject/cnasm/regn.y
@@ -0,0 +1,81 @@
+%{
+#include "ast.h"
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include "codegen.h"
+
+#define CLEAN_BOTH 2
+#define CLEAN_DST 1
+
+char *strconcat(char *dst, char *src, unsigned int clean) {
+	size_t dstlen = strlen(dst) + 1;
+	size_t srclen = strlen(src) + 1;
+
+	// Create new duplicate
+	char *new = malloc(( dstlen + srclen ) * sizeof(char));
+
+	// Copy stuff
+	memcpy(new, dst, dstlen);
+	strcat(new, src);
+
+	// Free old one
+	if( clean-- ) {
+		free(dst);
+
+		if( clean ) {
+			free(src);
+		}
+	}
+	return new;
+}
+
+// Trace node
+
+%}
+
+%token IFF EELSE FFOR RP RCP RSP LP LCP LSP ID COLON CMP NO WHILE
+
+%union {
+	char				*string;
+	struct ast_node		*node;
+	struct cond			*condition;
+	uint8_t				cmp;
+}
+
+%type <string>	ID 
+%type <node>	statement stm_list 
+%type <cmp>		CMP
+%type <condition> condition
+
+%%
+
+program: stm_list 			{gentree(stdout, NULL, $1);printf("\n");};
+
+stm_list: statement				{ $$ = $1; }
+		| stm_list statement 	{ $$ = insert_stm($2, $1); };
+
+condition: ID CMP ID		{ $$ = insert_cond($2, $1, $3); }
+		 | ID				{ $$ = insert_cond(CNEQ, $1, "0");};
+
+statement: ID																{$$ = insert_ident($1);}
+		 | IFF LP condition RP LCP stm_list RCP								{$$ = insert_ctrl(TIF, $3, $6, NULL);}
+		 | IFF LP condition RP LCP stm_list RCP	EELSE LCP stm_list RCP		{$$ = insert_ctrl(TIF, $3, $6, $10);}
+		 | WHILE LP condition RP LCP stm_list RCP							{$$ = insert_ctrl(TWHILE, $3, $6, NULL);}
+		 | FFOR LP ID LP condition LP ID RP LCP stm_list RCP				{$$ = insert_for($3, $5, $7, $10);};
+
+%%
+
+
+int main() {
+
+	/*for(;;) {
+		int t = yylex();
+		printf("yylex: %d\n", t);
+	} */
+
+	yyparse(); 
+}
+