1 files changed, 0 insertions, 181 deletions
diff --git a/test/littlesemantics/little.c b/test/littlesemantics/little.c
deleted file mode 100644
index cb89de8c..00000000
--- a/test/littlesemantics/little.c
+++ /dev/null
@@ -1,181 +0,0 @@
-#include "string.h"
-#include "stdio.h"
-
-#define VARIABLE_LIST 1
-#define VARIABLE_VALUE 2
-#define VARIABLE 3
-#define NUMERAL 4
-#define ADDITION 5
-#define GREATER 6
-#define ASSIGNMENT 7
-#define SEQUENCE 8
-#define WHILE 9
-#define SKIP 10
-
-typedef struct term {
-  short select;
-  union {
-    struct term **children;
-    int int_val;
-    char *string_val;
-  } term_body;
-} term;
-
-void panic(char *s) {
-  /*fprintf(stderr, "%s\n", s);*/
-       printf( "%s\n", s);
-  exit(-1);
-}
-
-term *make_term(int tag) {
-  term *ptr;
-
-  if(!(ptr = (term *)malloc(sizeof(term)))) {
-    panic("allocation failed in make_term");
-  }
-  ptr->select = tag;
-  return ptr;
-}
-
-term *make_binary_term(int tag, term *i1, term *i2) {
-  term *ptr = make_term(tag);
-  if(!(ptr->term_body.children
-           = (term **)malloc(sizeof(term*)*2))) {
-    panic("could not allocate memory in make_binary_term");
-  }
-  ptr->term_body.children[0] = i1;
-  ptr->term_body.children[1] = i2;
-  return ptr;
-}
-
-term *variable(char *s) {
-  term *ptr = make_term(VARIABLE);
-  ptr->term_body.string_val = s;
-  return ptr;
-}
-
-term *numeral(int i) {
-  term *ptr = make_term(NUMERAL);
-  ptr->term_body.int_val = i;
-  return ptr;
-}
-
-term *addition(term *i1, term *i2) {
-  return make_binary_term(ADDITION, i1, i2);
-}
-
-term *variable_list(term *i1, term *i2) {
-  return make_binary_term(VARIABLE_LIST, i1, i2);
-}
-
-term *variable_value(term *i1, term *i2) {
-  return make_binary_term(VARIABLE_VALUE, i1, i2);
-}
-
-term *greater(term *i1, term *i2) {
-  return make_binary_term(GREATER, i1, i2);
-}
-
-term *assignment(term *i1, term *i2) {
-  return make_binary_term(ASSIGNMENT, i1, i2);
-}
-
-term *sequence(term *i1, term *i2) {
-  return make_binary_term(SEQUENCE, i1, i2);
-}
-
-term *term_while(term *i1, term *i2) {
-  return make_binary_term(WHILE, i1, i2);
-}
-
-term *skip() {
-  return make_term(SKIP);
-}
-
-char *variable_name(term *v) {
-  return (v->term_body.string_val);
-}
-
-int numeral_value(term *t) {
-  return(t->term_body.int_val);
-}
-
-term *child(term *t, int rank) {
-  return (t->term_body.children[rank-1]);
-}
-
-int lookup(term *env, char *var) {
-  while(NULL != env) {
-    term *pair = child(env, 1);
-    if(strcmp(variable_name(child(pair, 1)), var)==0) {
-      return numeral_value(child(pair, 2));
-    } else {
-      env = child(env, 2);
-    }
-  }
-  /*  fprintf(stderr, "%s : ", var);*/
-  printf( "%s : ", var);
-  panic("no such variable in environment for lookup");
-}
-
-term *update(term *env, char *var_name, term *val) {
-  if(NULL != env) {
-    term *var = child(child(env, 1), 1);
-    if(strcmp(variable_name(var), var_name) == 0) {
-      return(variable_list(variable_value(var, val),
-                           child(env, 2)));
-    } else {
-      return(variable_list(child(env, 1),
-                           update(child(env, 2), var_name, val)));
-    }
-  } else {
-    /*fprintf(stderr, "%s : ", var_name);*/
-printf( "%s : ", var_name);
-    panic("no such variable in environment for update");
-  }
-}
-
-int evaluate(term *env, term *exp) {
-  int n1, n2;
-  switch(exp->select) {
-  case VARIABLE: return lookup(env, variable_name(exp));
-  case NUMERAL: return numeral_value(exp);
-  case ADDITION:
-    return (evaluate(env, child(exp, 1)) +
-            evaluate(env, child(exp, 2)));
-  }
-}
-
-int evaluate_bool(term *env, term *exp) {
-  int n1 = evaluate(env, child(exp, 1));
-  int n2 = evaluate(env, child(exp, 2));
-  return (n1 > n2);
-}
-
-term *execute(term *env, term *inst) {
-  switch(inst->select) {
-  case ASSIGNMENT:
-    return update(env,
-                  variable_name(child(inst, 1)),
-                  numeral(evaluate(env,child(inst, 2))));
-  case SEQUENCE:
-    return execute(execute(env,child(inst, 1)),child(inst, 2));
-  case WHILE:
-    if(evaluate_bool(env,child(inst, 1))) {
-      return execute(execute(env,child(inst, 2)), inst);
-    } else {
-      return env;
-    }
-  }
-}
-
-void print_env(term *env) {
-
-  while(env != NULL) {
-    printf("%s : %d\n", variable_name(child(child(env,1),1)),
-	   numeral_value(child(child(env,1),2)));
-    env = child(env, 2);
-    }
-}
-
-