lexical analysis almost done

1 files changed, 43 insertions, 0 deletions

diff --git a/cibic.y b/cibic.y
new file mode 100644
index 0000000..92f0cfe
--- /dev/null
+++ b/cibic.y
@@ -0,0 +1,43 @@
+%{
+#include <stdio.h>
+%}
+%token IDENTIFIER INT_CONST CHAR_CONST STR_CONST
+%token KW_VOID KW_CHAR KW_INT KW_STRUCT KW_UNION KW_IF KW_ELSE KW_WHILE
+%token KW_FOR KW_CONT KW_BREAK KW_RET KW_SIZEOF
+%token OPT_OR OPT_AND OPT_EQ OPT_NE OPT_LE OPT_GE OPT_SHL OPT_SHR OPT_INC OPT_DEC OPT_PTR
+%token ASS_MUL ASS_DIV ASS_MOD ASS_ADD ASS_SUB ASS_SHL ASS_SHR ASS_AND ASS_XOR ASS_OR 
+%token UNKNOWN
+%union {
+    int intval;
+    char *strval;
+}
+%%
+program
+    : body { 
+        printf("\n")}
+body
+    : IDENTIFIER
+%%
+int yywrap() { 
+    return 1; 
+}
+
+int yyerror(char *s) {
+}
+
+extern FILE *yyin;
+int main() {
+    int ret;
+    //yyin = fopen("in", "r");
+    while (ret = yylex()) 
+    {
+        printf("%d\n", ret);    
+        if (ret == IDENTIFIER)
+            printf("id: %s\n", yylval.strval);
+        else if (ret == INT_CONST)
+            printf("int: %d\n", yylval.intval);
+        else if (ret == STR_CONST)
+            printf("str: %s\n", yylval.strval);
+    }
+    return 0;
+}