Merge remote-tracking branch 'remotes/github/v0.1' into v0.1

16 files changed, 2508 insertions, 743 deletions

diff --git a/src/core/convert.c b/src/core/convert.c
index cf8987e..73fb8a2 100644
--- a/src/core/convert.c
+++ b/src/core/convert.c
@@ -1,14 +1,13 @@
 /*:*
  *: File: ./src/core/convert.c
  *: A simple interpreter
- *: 
- *: WWW	: http://fype.buetow.org
- *: AUTHOR	: http://paul.buetow.org
- *: E-Mail	: fype at dev.buetow.org
- *: 
- *: Copyright (c) 2005 - 2009, Dipl.-Inform. (FH) Paul C. Buetow 
+ *:
+ *: WWW		: http://fype.buetow.org
+ *: E-Mail	: fype@dev.buetow.org
+ *:
+ *: Copyright (c) 2005 2006 2007 2008, Dipl.-Inf. (FH) Paul C. Buetow
  *: All rights reserved.
- *: 
+ *:
  *: Redistribution and use in source and binary forms, with or without modi-
  *: fication, are permitted provided that the following conditions are met:
  *:  * Redistributions of source code must retain the above copyright
@@ -16,25 +15,24 @@
  *:  * Redistributions in binary form must reproduce the above copyright
  *:    notice, this list of conditions and the following disclaimer in the
  *:    documentation and/or other materials provided with the distribution.
- *:  * Neither the name of buetow.org nor the names of its contributors may 
- *:    be used to endorse or promote products derived from this software 
+ *:  * Neither the name of P. B. Labs nor the names of its contributors may
+ *:    be used to endorse or promote products derived from this software
  *:    without specific prior written permission.
- *: 
- *: THIS SOFTWARE IS PROVIDED BY PAUL C. BUETOW AS IS'' AND ANY EXPRESS OR 
- *: IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 
+ *:
+ *: THIS SOFTWARE IS PROVIDED BY Paul Buetow AS IS'' AND ANY EXPRESS OR
+ *: IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  *: WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- *: DISCLAIMED. IN NO EVENT SHALL PAUL C. BUETOW BE LIABLE FOR ANY DIRECT, 
- *: INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 
- *: (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 
- *:  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
+ *: DISCLAIMED. IN NO EVENT SHALL Paul Buetow BE LIABLE FOR ANY DIRECT,
+ *: INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ *: (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ *:  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  *: HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- *: STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 
- *: IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
+ *: STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ *: IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  *: POSSIBILITY OF SUCH DAMAGE.
  *:*/
 
 #include "convert.h"
-#include "../data/array.h"
 
 void
 convert_to_integer(Token *p_token) {
@@ -49,10 +47,6 @@ convert_to_integer(Token *p_token) {
       token_set_tt(p_token, TT_INTEGER);
       token_set_ival(p_token, atoi(token_get_val(p_token)));
       break;
-   case TT_ARRAY:
-      token_set_tt(p_token, TT_INTEGER);
-      token_set_ival(p_token, array_get_size(p_token->p_array));
-      break;
    default:
       ERROR("Ouups(%s)", tt_get_name(token_get_tt(p_token)));
       break;
@@ -68,9 +62,6 @@ convert_to_integer_get(Token *p_token) {
       return ((int) token_get_dval(p_token));
    case TT_STRING:
       return (atoi(token_get_val(p_token)));
-   case TT_ARRAY:
-      return (array_get_size(p_token->p_array));
-      break;
    default:
       ERROR("Ouups(%s)", tt_get_name(token_get_tt(p_token)));
    }
@@ -91,10 +82,6 @@ convert_to_double(Token *p_token) {
       token_set_tt(p_token, TT_DOUBLE);
       token_set_dval(p_token, atof(token_get_val(p_token)));
       break;
-   case TT_ARRAY:
-      token_set_tt(p_token, TT_DOUBLE);
-      token_set_dval(p_token, array_get_size(p_token->p_array));
-      break;
    default:
       token_print_val(p_token);
       ERROR("Datatype conversion error '%s'", token_get_val(p_token));
@@ -126,16 +113,6 @@ convert_to_string(Token *p_token) {
       strcpy(p_token->c_val, c_tmp);
       p_token->c_val[i_len] = 0;
    }
-   case TT_ARRAY:
-   {
-      token_set_tt(p_token, TT_STRING);
-      char c_tmp[1024];
-      sprintf(c_tmp, "%d", array_get_size(p_token->p_array));
-      int i_len = strlen(c_tmp);
-      p_token->c_val = realloc(p_token->c_val, sizeof(char) * (i_len + 1));
-      strcpy(p_token->c_val, c_tmp);
-      p_token->c_val[i_len] = 0;
-   }
    break;
    case TT_STRING:
       break;
@@ -146,11 +123,6 @@ convert_to_string(Token *p_token) {
 }
 
 void
-convert_to_array(Token *p_token) {
-   ERROR("not yet implemented");
-}
-
-void
 convert_to_tt(Token *p_token, TokenType tt) {
    switch (tt) {
    case TT_INTEGER:
@@ -162,9 +134,6 @@ convert_to_tt(Token *p_token, TokenType tt) {
    case TT_STRING:
       convert_to_string(p_token);
       break;
-   case TT_ARRAY:
-      convert_to_array(p_token);
-      break;
    default:
       ERROR("Ouups!");
    }
diff --git a/src/core/convert.h b/src/core/convert.h
index 9dcf23e..0c8b7da 100644
--- a/src/core/convert.h
+++ b/src/core/convert.h
@@ -1,14 +1,13 @@
 /*:*
  *: File: ./src/core/convert.h
  *: A simple interpreter
- *: 
- *: WWW	: http://fype.buetow.org
- *: AUTHOR	: http://paul.buetow.org
- *: E-Mail	: fype at dev.buetow.org
- *: 
- *: Copyright (c) 2005 - 2009, Dipl.-Inform. (FH) Paul C. Buetow 
+ *:
+ *: WWW		: http://fype.buetow.org
+ *: E-Mail	: fype@dev.buetow.org
+ *:
+ *: Copyright (c) 2005 2006 2007 2008, Dipl.-Inf. (FH) Paul C. Buetow
  *: All rights reserved.
- *: 
+ *:
  *: Redistribution and use in source and binary forms, with or without modi-
  *: fication, are permitted provided that the following conditions are met:
  *:  * Redistributions of source code must retain the above copyright
@@ -16,20 +15,20 @@
  *:  * Redistributions in binary form must reproduce the above copyright
  *:    notice, this list of conditions and the following disclaimer in the
  *:    documentation and/or other materials provided with the distribution.
- *:  * Neither the name of buetow.org nor the names of its contributors may 
- *:    be used to endorse or promote products derived from this software 
+ *:  * Neither the name of P. B. Labs nor the names of its contributors may
+ *:    be used to endorse or promote products derived from this software
  *:    without specific prior written permission.
- *: 
- *: THIS SOFTWARE IS PROVIDED BY PAUL C. BUETOW AS IS'' AND ANY EXPRESS OR 
- *: IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 
+ *:
+ *: THIS SOFTWARE IS PROVIDED BY Paul Buetow AS IS'' AND ANY EXPRESS OR
+ *: IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  *: WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- *: DISCLAIMED. IN NO EVENT SHALL PAUL C. BUETOW BE LIABLE FOR ANY DIRECT, 
- *: INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 
- *: (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 
- *:  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
+ *: DISCLAIMED. IN NO EVENT SHALL Paul Buetow BE LIABLE FOR ANY DIRECT,
+ *: INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ *: (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ *:  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  *: HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- *: STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 
- *: IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
+ *: STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ *: IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  *: POSSIBILITY OF SUCH DAMAGE.
  *:*/
 
@@ -46,7 +45,6 @@ int convert_to_integer_get(Token *p_token);
 void convert_to_integer(Token *p_token);
 void convert_to_double(Token *p_token);
 void convert_to_string(Token *p_token);
-void convert_to_array(Token *p_token);
 void convert_to_tt(Token *p_token, TokenType tt);
 TokenType convert_to_highest(Token *p_token1, Token *p_token2);
 TokenType convert_function_arg_types_to_highest(Stack *p_stack_args, int
diff --git a/src/core/function.c b/src/core/function.c
index 70166ed..fda40b8 100644
--- a/src/core/function.c
+++ b/src/core/function.c
@@ -1,14 +1,13 @@
 /*:*
  *: File: ./src/core/function.c
  *: A simple interpreter
- *: 
- *: WWW	: http://fype.buetow.org
- *: AUTHOR	: http://paul.buetow.org
- *: E-Mail	: fype at dev.buetow.org
- *: 
- *: Copyright (c) 2005 - 2009, Dipl.-Inform. (FH) Paul C. Buetow 
+ *:
+ *: WWW		: http://fype.buetow.org
+ *: E-Mail	: fype@dev.buetow.org
+ *:
+ *: Copyright (c) 2005 2006 2007 2008, Dipl.-Inf. (FH) Paul C. Buetow
  *: All rights reserved.
- *: 
+ *:
  *: Redistribution and use in source and binary forms, with or without modi-
  *: fication, are permitted provided that the following conditions are met:
  *:  * Redistributions of source code must retain the above copyright
@@ -16,36 +15,844 @@
  *:  * Redistributions in binary form must reproduce the above copyright
  *:    notice, this list of conditions and the following disclaimer in the
  *:    documentation and/or other materials provided with the distribution.
- *:  * Neither the name of buetow.org nor the names of its contributors may 
- *:    be used to endorse or promote products derived from this software 
+ *:  * Neither the name of P. B. Labs nor the names of its contributors may
+ *:    be used to endorse or promote products derived from this software
  *:    without specific prior written permission.
- *: 
- *: THIS SOFTWARE IS PROVIDED BY PAUL C. BUETOW AS IS'' AND ANY EXPRESS OR 
- *: IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 
+ *:
+ *: THIS SOFTWARE IS PROVIDED BY Paul Buetow AS IS'' AND ANY EXPRESS OR
+ *: IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  *: WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- *: DISCLAIMED. IN NO EVENT SHALL PAUL C. BUETOW BE LIABLE FOR ANY DIRECT, 
- *: INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 
- *: (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 
- *:  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
+ *: DISCLAIMED. IN NO EVENT SHALL Paul Buetow BE LIABLE FOR ANY DIRECT,
+ *: INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ *: (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ *:  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  *: HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- *: STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 
- *: IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
+ *: STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ *: IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  *: POSSIBILITY OF SUCH DAMAGE.
  *:*/
 
-#include "../defines.h"
+#include <stdlib.h>
+#include <sys/types.h>
+#include <unistd.h>
 
 #include "function.h"
 
-Function*
-function_new() {
-   Function *p_function = malloc(sizeof(Function));
+#include "convert.h"
+#include "scope.h"
+#include "symbol.h"
 
-   return (p_function);
+#define _FUNCTION_ERROR(m,t) \
+	 ERROR(\
+		"%s: Function error in %s line %d pos %d near '%s'", m, \
+		token_get_filename(t), \
+		token_get_line_nr(t), \
+		token_get_pos_nr(t), \
+		token_get_val(t) \
+		)
+
+void
+_process(Interpret *p_interpret, Token *p_token_store, Token *p_token_op,
+         Token *p_token_op2, Token *p_token_next) {
+
+   TokenType tt_op = token_get_tt(p_token_op);
+   TokenType tt_op2 = p_token_op2 == NULL
+                      ? TT_NONE
+                      : token_get_tt(p_token_op2);
+
+#ifdef DEBUG_FUNCTION_PROCESS
+   if (p_token_op2 == NULL)
+      printf("PROCESS OPERATOR %s\n", tt_get_name(tt_op));
+   else
+      printf("PROCESS OPERATOR %s %s\n", tt_get_name(tt_op),
+             tt_get_name(tt_op2));
+
+   token_print(p_token_next);
+   printf("\n");
+   token_print(p_token_store);
+   printf("\n");
+#endif /* DEBUG_FUNCTION_PROCESS */
+
+   if (p_token_op2 != NULL) {
+      switch (tt_op) {
+      case TT_NOT:
+         switch (tt_op2) {
+         case TT_ASSIGN:
+            tt_op = TT_NEQ;
+            break;
+         default:
+            break;
+         }
+         break;
+      case TT_ASSIGN:
+         switch (tt_op2) {
+         case TT_ASSIGN:
+            tt_op = TT_EQ;
+            break;
+         default:
+            break;
+         }
+         break;
+      case TT_LT:
+         switch (tt_op2) {
+         case TT_ASSIGN:
+            tt_op = TT_LE;
+            break;
+         default:
+            break;
+         }
+         break;
+      case TT_GT:
+         switch (tt_op2) {
+         case TT_ASSIGN:
+            tt_op = TT_GE;
+            break;
+         default:
+            break;
+         }
+         break;
+      case TT_DDOT:
+         switch (tt_op2) {
+         case TT_LT:
+            tt_op = TT_LSHIFT;
+            break;
+         case TT_GT:
+            tt_op = TT_RSHIFT;
+            break;
+         default:
+            break;
+         }
+         break;
+      default:
+         break;
+      }
+   } else {
+      switch (tt_op) {
+      case TT_ASSIGN:
+      {
+         Token *p_token_assign = p_interpret->p_token_temp;
+         TokenType tt_assign = token_get_tt(p_token_assign);
+
+         if (tt_assign != TT_IDENT) {
+            _FUNCTION_ERROR("Can only assign to symbols",
+                            p_token_store);
+         }
+
+         Symbol *p_symbol = scope_get(p_interpret->p_scope,
+                                      token_get_val(p_token_assign));
+
+         if (p_symbol == NULL) {
+            _FUNCTION_ERROR("No such symbol",
+                            p_token_assign);
+         }
+
+         symbol_set_val(p_symbol, p_token_store);
+         symbol_set_sym(p_symbol, SYM_VARIABLE);
+
+         return;
+      }
+
+      break;
+      NO_DEFAULT;
+      }
+   }
+
+   p_token_next = token_new_copy(p_token_next);
+   TokenType tt_highest = convert_to_highest(p_token_store, p_token_next);
+
+#ifdef DEBUG_FUNCTION_PROCESS
+   printf("===> %s %s %s\n",
+          tt_get_name(tt_highest),
+          tt_get_name(tt_op),
+          tt_get_name(tt_highest));
+#endif /* DEBUG_FUNCTION_PROCESS */
+
+   switch (tt_op) {
+   case TT_ADD:
+      switch (tt_highest) {
+      case TT_INTEGER:
+         token_set_ival(p_token_store,
+                        token_get_ival(p_token_next) +
+                        token_get_ival(p_token_store));
+         break;
+      case TT_DOUBLE:
+         token_set_dval(p_token_store,
+                        token_get_dval(p_token_next) +
+                        token_get_dval(p_token_store));
+      case TT_STRING:
+         token_set_ival(p_token_store,
+                        atoi(token_get_val(p_token_next)) +
+                        atoi(token_get_val(p_token_store)));
+         token_set_tt(p_token_store, TT_INTEGER);
+         break;
+         NO_DEFAULT;
+      }
+      break;
+   case TT_SUB:
+      switch (tt_highest) {
+      case TT_INTEGER:
+         token_set_ival(p_token_store,
+                        token_get_ival(p_token_next) -
+                        token_get_ival(p_token_store));
+         break;
+      case TT_DOUBLE:
+         token_set_dval(p_token_store,
+                        token_get_dval(p_token_next) -
+                        token_get_dval(p_token_store));
+         break;
+      case TT_STRING:
+         token_set_ival(p_token_store,
+                        atoi(token_get_val(p_token_next)) -
+                        atoi(token_get_val(p_token_store)));
+         token_set_tt(p_token_store, TT_INTEGER);
+         break;
+         NO_DEFAULT;
+      }
+      break;
+   case TT_MULT:
+      switch (tt_highest) {
+      case TT_INTEGER:
+         token_set_ival(p_token_store,
+                        token_get_ival(p_token_next) *
+                        token_get_ival(p_token_store));
+         break;
+      case TT_DOUBLE:
+         token_set_dval(p_token_store,
+                        token_get_dval(p_token_next) *
+                        token_get_dval(p_token_store));
+         break;
+      case TT_STRING:
+         token_set_ival(p_token_store,
+                        atoi(token_get_val(p_token_next)) *
+                        atoi(token_get_val(p_token_store)));
+         token_set_tt(p_token_store, TT_INTEGER);
+         break;
+         NO_DEFAULT;
+      }
+      break;
+   case TT_DIV:
+      switch (tt_highest) {
+      case TT_INTEGER:
+         token_set_ival(p_token_store,
+                        (int) token_get_ival(p_token_next) /
+                        token_get_ival(p_token_store));
+         break;
+      case TT_DOUBLE:
+         token_set_dval(p_token_store,
+                        token_get_dval(p_token_next) /
+                        token_get_dval(p_token_store));
+         break;
+      case TT_STRING:
+         token_set_dval(p_token_store,
+                        atof(token_get_val(p_token_next)) /
+                        atof(token_get_val(p_token_store)));
+         token_set_tt(p_token_store, TT_DOUBLE);
+         break;
+         NO_DEFAULT;
+      }
+      break;
+   case TT_EQ:
+      switch (tt_highest) {
+      case TT_INTEGER:
+         token_set_ival(p_token_store,
+                        (int) token_get_ival(p_token_next) ==
+                        token_get_ival(p_token_store));
+         break;
+      case TT_DOUBLE:
+         token_set_ival(p_token_store,
+                        token_get_dval(p_token_next) ==
+                        token_get_dval(p_token_store));
+         token_set_tt(p_token_store, TT_INTEGER);
+         break;
+      case TT_STRING:
+         token_set_ival(p_token_store,
+                        strcmp(token_get_val(p_token_next),
+                               token_get_val(p_token_store)) == 0);
+         token_set_tt(p_token_store, TT_INTEGER);
+         break;
+         NO_DEFAULT;
+      }
+      break;
+   case TT_NEQ:
+      switch (tt_highest) {
+      case TT_INTEGER:
+         token_set_ival(p_token_store,
+                        (int) token_get_ival(p_token_next) !=
+                        token_get_ival(p_token_store));
+         break;
+      case TT_DOUBLE:
+         token_set_ival(p_token_store,
+                        token_get_dval(p_token_next) !=
+                        token_get_dval(p_token_store));
+         token_set_tt(p_token_store, TT_INTEGER);
+         break;
+      case TT_STRING:
+         token_set_ival(p_token_store,
+                        strcmp(token_get_val(p_token_next),
+                               token_get_val(p_token_store)) != 0);
+         token_set_tt(p_token_store, TT_INTEGER);
+         break;
+         NO_DEFAULT;
+      }
+      break;
+   case TT_LE:
+      switch (tt_highest) {
+      case TT_INTEGER:
+         token_set_ival(p_token_store,
+                        (int) token_get_ival(p_token_next) <=
+                        token_get_ival(p_token_store));
+         break;
+      case TT_DOUBLE:
+         token_set_ival(p_token_store,
+                        token_get_dval(p_token_next) <=
+                        token_get_dval(p_token_store));
+         token_set_tt(p_token_store, TT_INTEGER);
+         break;
+      case TT_STRING:
+         token_set_ival(p_token_store,
+                        strcmp(token_get_val(p_token_next),
+                               token_get_val(p_token_store)) <= 0);
+         token_set_tt(p_token_store, TT_INTEGER);
+         break;
+         NO_DEFAULT;
+      }
+      break;
+   case TT_GE:
+      switch (tt_highest) {
+      case TT_INTEGER:
+         token_set_ival(p_token_store,
+                        (int) token_get_ival(p_token_next) >=
+                        token_get_ival(p_token_store));
+         break;
+      case TT_DOUBLE:
+         token_set_ival(p_token_store,
+                        token_get_dval(p_token_next) >=
+                        token_get_dval(p_token_store));
+         token_set_tt(p_token_store, TT_INTEGER);
+         break;
+      case TT_STRING:
+         token_set_ival(p_token_store,
+                        strcmp(token_get_val(p_token_next),
+                               token_get_val(p_token_store)) >= 0);
+         token_set_tt(p_token_store, TT_INTEGER);
+         break;
+         NO_DEFAULT;
+      }
+      break;
+   case TT_LT:
+      switch (tt_highest) {
+      case TT_INTEGER:
+         token_set_ival(p_token_store,
+                        (int) token_get_ival(p_token_next) <
+                        token_get_ival(p_token_store));
+         break;
+      case TT_DOUBLE:
+         token_set_ival(p_token_store,
+                        token_get_dval(p_token_next) <
+                        token_get_dval(p_token_store));
+         token_set_tt(p_token_store, TT_INTEGER);
+         break;
+      case TT_STRING:
+         token_set_ival(p_token_store,
+                        strcmp(token_get_val(p_token_next),
+                               token_get_val(p_token_store)) < 0);
+         token_set_tt(p_token_store, TT_INTEGER);
+         break;
+         NO_DEFAULT;
+      }
+      break;
+   case TT_GT:
+      switch (tt_highest) {
+      case TT_INTEGER:
+         token_set_ival(p_token_store,
+                        (int) token_get_ival(p_token_next) >
+                        token_get_ival(p_token_store));
+         break;
+      case TT_DOUBLE:
+         token_set_ival(p_token_store,
+                        token_get_dval(p_token_next) >
+                        token_get_dval(p_token_store));
+         token_set_tt(p_token_store, TT_INTEGER);
+         break;
+      case TT_STRING:
+         token_set_ival(p_token_store,
+                        strcmp(token_get_val(p_token_next),
+                               token_get_val(p_token_store)) > 0);
+         token_set_tt(p_token_store, TT_INTEGER);
+         break;
+         NO_DEFAULT;
+      }
+      break;
+   case TT_AND:
+      switch (tt_highest) {
+      case TT_INTEGER:
+         token_set_ival(p_token_store,
+                        (int) token_get_ival(p_token_next) &
+                        token_get_ival(p_token_store));
+         break;
+      case TT_DOUBLE:
+         token_set_ival(p_token_store,
+                        (int) token_get_dval(p_token_next) &
+                        (int) token_get_dval(p_token_store));
+         token_set_tt(p_token_store, TT_INTEGER);
+         break;
+      case TT_STRING:
+         token_set_ival(p_token_store,
+                        atoi(token_get_val(p_token_next)) &
+                        atoi(token_get_val(p_token_store)));
+         token_set_tt(p_token_store, TT_INTEGER);
+         break;
+         NO_DEFAULT;
+      }
+      break;
+   case TT_OR:
+      switch (tt_highest) {
+      case TT_INTEGER:
+         token_set_ival(p_token_store,
+                        (int) token_get_ival(p_token_next) |
+                        token_get_ival(p_token_store));
+         break;
+      case TT_DOUBLE:
+         token_set_ival(p_token_store,
+                        (int) token_get_dval(p_token_next) |
+                        (int) token_get_dval(p_token_store));
+         token_set_tt(p_token_store, TT_INTEGER);
+         break;
+      case TT_STRING:
+         token_set_ival(p_token_store,
+                        atoi(token_get_val(p_token_next)) |
+                        atoi(token_get_val(p_token_store)));
+         token_set_tt(p_token_store, TT_INTEGER);
+         break;
+         NO_DEFAULT;
+      }
+      break;
+   case TT_XOR:
+      switch (tt_highest) {
+      case TT_INTEGER:
+         token_set_ival(p_token_store,
+                        (int) token_get_ival(p_token_next) ^
+                        token_get_ival(p_token_store));
+         break;
+      case TT_DOUBLE:
+         token_set_ival(p_token_store,
+                        (int) token_get_dval(p_token_next) ^
+                        (int) token_get_dval(p_token_store));
+         token_set_tt(p_token_store, TT_INTEGER);
+         break;
+      case TT_STRING:
+         token_set_ival(p_token_store,
+                        atoi(token_get_val(p_token_next)) ^
+                        atoi(token_get_val(p_token_store)));
+         token_set_tt(p_token_store, TT_INTEGER);
+         break;
+         NO_DEFAULT;
+      }
+      break;
+   case TT_LSHIFT:
+      switch (tt_highest) {
+      case TT_INTEGER:
+         token_set_ival(p_token_store,
+                        (int) token_get_ival(p_token_next) <<
+                        token_get_ival(p_token_store));
+         break;
+      case TT_DOUBLE:
+         token_set_ival(p_token_store,
+                        (int) token_get_dval(p_token_next) <<
+                        (int) token_get_dval(p_token_store));
+         token_set_tt(p_token_store, TT_INTEGER);
+         break;
+      case TT_STRING:
+         token_set_ival(p_token_store,
+                        atoi(token_get_val(p_token_next)) <<
+                        atoi(token_get_val(p_token_store)));
+         token_set_tt(p_token_store, TT_INTEGER);
+         break;
+         NO_DEFAULT;
+      }
+      break;
+   case TT_RSHIFT:
+      switch (tt_highest) {
+      case TT_INTEGER:
+         token_set_ival(p_token_store,
+                        (int) token_get_ival(p_token_next) >>
+                        token_get_ival(p_token_store));
+         break;
+      case TT_DOUBLE:
+         token_set_ival(p_token_store,
+                        (int) token_get_dval(p_token_next) >>
+                        (int) token_get_dval(p_token_store));
+         token_set_tt(p_token_store, TT_INTEGER);
+         break;
+      case TT_STRING:
+         token_set_ival(p_token_store,
+                        atoi(token_get_val(p_token_next)) >>
+                        atoi(token_get_val(p_token_store)));
+         token_set_tt(p_token_store, TT_INTEGER);
+         break;
+         NO_DEFAULT;
+      }
+      break;
+
+   default:
+      _FUNCTION_ERROR("No such function/operator", p_token_op);
+   }
+
+#ifdef DEBUG_FUNCTION_PROCESS
+   token_print(p_token_store);
+   printf("\n\n");
+#endif /* DEBUG_FUNCTION_PROCESS */
+
+   token_delete(p_token_next);
+}
+
+void
+function_process(Interpret *p_interpret, Token *p_token_op,
+                 Token *p_token_op2, Stack *p_stack_args, int i_args) {
+
+   Token *p_token_store = token_new_copy(stack_pop(p_stack_args));
+
+   for (int i = 0; i < i_args -1 && !stack_empty(p_stack_args); ++i) {
+      Token *p_token_next = stack_pop(p_stack_args);
+
+      _process(p_interpret, p_token_store, p_token_op,
+               p_token_op2, p_token_next);
+   }
+
+   stack_push(p_stack_args, p_token_store);
+}
+
+_Bool
+function_is_buildin(Token *p_token_ident) {
+   if (strcmp("assert", token_get_val(p_token_ident)) == 0)
+      return (true);
+
+   if (strcmp("decr", token_get_val(p_token_ident)) == 0)
+      return (true);
+
+   if (strcmp("double", token_get_val(p_token_ident)) == 0)
+      return (true);
+
+   if (strcmp("end", token_get_val(p_token_ident)) == 0)
+      return (true);
+
+   if (strcmp("exit", token_get_val(p_token_ident)) == 0)
+      return (true);
+
+   if (strcmp("fork", token_get_val(p_token_ident)) == 0)
+      return (true);
+
+   if (strcmp("gc", token_get_val(p_token_ident)) == 0)
+      return (true);
+
+   if (strcmp("incr", token_get_val(p_token_ident)) == 0)
+      return (true);
+
+   if (strcmp("integer", token_get_val(p_token_ident)) == 0)
+      return (true);
+
+   if (strcmp("ln", token_get_val(p_token_ident)) == 0)
+      return (true);
+
+   if (strcmp("neg", token_get_val(p_token_ident)) == 0)
+      return (true);
+
+   if (strcmp("no", token_get_val(p_token_ident)) == 0)
+      return (true);
+
+   if (strcmp("put", token_get_val(p_token_ident)) == 0)
+      return (true);
+
+   if (strcmp("say", token_get_val(p_token_ident)) == 0)
+      return (true);
+
+   if (strcmp("string", token_get_val(p_token_ident)) == 0)
+      return (true);
+
+   if (strcmp("yes", token_get_val(p_token_ident)) == 0)
+      return (true);
+
+   if (strcmp("not", token_get_val(p_token_ident)) == 0)
+      return (true);
+
+   return (false);
+}
+
+void
+function_process_buildin(Interpret *p_interpret, Token *p_token_ident,
+                         Stack *p_stack_args) {
+
+   if (strcmp("assert", token_get_val(p_token_ident)) == 0) {
+      if (0 == stack_size(p_stack_args))
+         _FUNCTION_ERROR("No argument given", p_token_ident);
+
+      Token *p_token = stack_top(p_stack_args);
+
+      switch (token_get_tt(p_token)) {
+      case TT_INTEGER:
+         if (token_get_ival(p_token) == 0)
+            _FUNCTION_ERROR("Assert failed", p_token);
+         break;
+      case TT_DOUBLE:
+         if (token_get_dval(p_token) == 0)
+            _FUNCTION_ERROR("Assert failed", p_token);
+         break;
+      case TT_STRING:
+         if (atoi(token_get_val(p_token)) == 0)
+            _FUNCTION_ERROR("Assert failed", p_token);
+         break;
+         NO_DEFAULT;
+      }
+
+   } else if (strcmp("decr", token_get_val(p_token_ident)) == 0) {
+      if (0 == stack_size(p_stack_args))
+         _FUNCTION_ERROR("No argument given", p_token_ident);
+
+      Token *p_token = stack_top(p_stack_args);
+      switch (token_get_tt(p_token)) {
+      case TT_INTEGER:
+         token_set_ival(p_token, token_get_ival(p_token) - 1);
+         break;
+      case TT_DOUBLE:
+         token_set_dval(p_token, token_get_dval(p_token) - 1);
+         break;
+      case TT_STRING:
+         convert_to_integer(p_token);
+         token_set_ival(p_token, token_get_ival(p_token) - 1);
+         break;
+         NO_DEFAULT;
+      }
+
+   } else if (strcmp("double", token_get_val(p_token_ident)) == 0) {
+      if (0 == stack_size(p_stack_args))
+         _FUNCTION_ERROR("No argument given", p_token_ident);
+
+      Token *p_token = token_new_copy(stack_pop(p_stack_args));
+      convert_to_double(p_token);
+      stack_push(p_stack_args, p_token);
+
+   } else if (strcmp("end", token_get_val(p_token_ident)) == 0) {
+      exit(0);
+
+   } else if (strcmp("fork", token_get_val(p_token_ident)) == 0) {
+      Token *p_token = token_new_integer((int) fork());
+      stack_push(p_stack_args, p_token);
+
+   } else if (strcmp("gc", token_get_val(p_token_ident)) == 0) {
+      int i_count = garbage_collect();
+      printf("ICOUNT %d\n", i_count);
+      Token *p_token = token_new_integer(i_count);
+      stack_push(p_stack_args, p_token);
+
+   } else if (strcmp("exit", token_get_val(p_token_ident)) == 0) {
+      if (0 == stack_size(p_stack_args))
+         _FUNCTION_ERROR("No argument given", p_token_ident);
+
+      Token *p_token = stack_top(p_stack_args);
+      p_token = token_new_copy(p_token);
+      convert_to_integer(p_token);
+      exit(token_get_ival(p_token));
+
+   } else if (strcmp("incr", token_get_val(p_token_ident)) == 0) {
+      if (0 == stack_size(p_stack_args))
+         _FUNCTION_ERROR("No argument given", p_token_ident);
+
+      Token *p_token = stack_top(p_stack_args);
+      switch (token_get_tt(p_token)) {
+      case TT_INTEGER:
+         token_set_ival(p_token, token_get_ival(p_token) + 1);
+         break;
+      case TT_DOUBLE:
+         token_set_dval(p_token, token_get_dval(p_token) + 1);
+         break;
+      case TT_STRING:
+         convert_to_integer(p_token);
+         token_set_ival(p_token, token_get_ival(p_token) + 1);
+         break;
+         NO_DEFAULT;
+      }
+
+   } else if (strcmp("integer", token_get_val(p_token_ident)) == 0) {
+      if (0 == stack_size(p_stack_args))
+         _FUNCTION_ERROR("No argument given", p_token_ident);
+
+      Token *p_token = token_new_copy(stack_pop(p_stack_args));
+      convert_to_integer(p_token);
+      stack_push(p_stack_args, p_token);
+
+   } else if (strcmp("ln", token_get_val(p_token_ident)) == 0) {