Add debugging native compilation option

Makefile

@@ -19,6 +19,9 @@ parser.tab.c parser.tab.h: parser.y expression.h
 %.o: %.c
 	$(CC) $(CFLAGS) -c $<
 
+native-test: native-test.c lex.yy.c parser.tab.c expression.c
+	gcc -std=gnu99 -Wall -pedantic $^ -o $@ $(LFLAGS)
+
 .PHONY: clean
 clean:
 	rm -rf *.o {lex.yy,parser.tab}.{c,h} webdice.js 

native-test.c

@@ -0,0 +1,55 @@
+#include <string.h>
+#include <math.h>
+#include "expression.h"
+#include "parser.tab.h"
+#include "lex.yy.h"
+
+void console_print (const char* str){
+	fprintf(stderr,"%s\n",str);
+}
+
+void output_print (const char* str){
+	printf("%s\n",str);
+}
+
+int yyerror(void* scanner, void* lvalp, char* str){
+	console_print(str);
+	return 0;
+}
+
+void webdice(char* str){
+	union expression* root;
+	struct expression_result result;
+	int length;
+	char* out_block;
+
+	console_print("A");
+
+	yyscan_t scanner;
+	console_print("B");
+	yylex_init(&scanner);
+	console_print("C");
+	yy_scan_string (str, scanner);
+	console_print("D");
+
+	if(yyparse((void*) scanner, &root) == 0){
+		result = resolve(root);
+		length = strlen(result.text) + 4 * ceill(log10l(result.max)) + 100;
+		out_block = (char*) malloc(length * sizeof(char));
+		sprintf(out_block,"<p>%s = <span title=\"min: %Lf, expected: %Lf, max: %Lf\">%Lf</span></p>", result.text, result.min, result.expected, result.max, result.actual);
+
+		output_print(out_block);
+
+		free(out_block);
+	}else{
+		output_print("<p>Error!</p>");
+	}
+	yylex_destroy(scanner);
+}
+
+int main(){
+	webdice("cenas");
+	webdice("1d4");
+	webdice("5");
+	return 0;
+}