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A start on the joy() interpeter.

This commit is contained in:
Simon Forman 2023-03-05 23:20:37 -08:00
parent c8360c7f7a
commit 7bfcdd2758
1 changed files with 29 additions and 2 deletions
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31
implementations/uvm-ncc/joy_types.c
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@ -163,7 +163,7 @@ allocate_string(char *buffer, u32 offset, u32 length)
string_heap[end] = '\0'; string_heap[end] = '\0';
u32 new_string = string_heap_top; u32 new_string = string_heap_top;
string_heap_top = (u32)end + 1; string_heap_top = (u32)end + 1;
print_str("allocating ");print_str(string_heap + new_string);print_endl(); //print_str("allocating ");print_str(string_heap + new_string);print_endl();
return string_heap + new_string; return string_heap + new_string;
} }
@ -519,6 +519,29 @@ text_to_expression(char *str)
} }
u32
joy(u32 stack, u32 expression)
{
u32 term;
while (expression) {
term = head(expression);
expression = tail(expression);
//print_joy_value(term);print_endl();
//print_i64(expression);print_endl();
u8 type = TYPE_OF(term);
if (type == joyInt || type == joyBool || type == joyList) {
stack = cons(term, stack);
} else { // type == joySymbol
char *str = ht_lookup(VALUE_OF(term));
if (error != NO_ERROR)
return 0;
print_str(str);print_endl();
}
}
return stack;
}
void void
main() main()
{ {
@ -547,7 +570,11 @@ main()
print_endl(); print_endl();
*/ */
print_joy_list(text_to_expression(" 1[2[true 3][aa[aa bb] aa bb cc]bob]false[]bob 3[4] ga[]ry")); u32 expression = text_to_expression(" 1[2[true 3][aa[aa bb] aa bb cc]bob]false[]bob 3[4] ga[]ry");
print_joy_list(expression);
print_endl();
u32 stack = joy(empty_list, expression);
print_joy_list(stack);
print_endl(); print_endl();
} }