#include <assert.h>
#include <inttypes.h>
+#include <setjmp.h>
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
struct Closure
{
Environment* closed;
- Object (*call)(EnvironmentPool*, Environment*, size_t, Stack*);
+ Object (*call)(EnvironmentPool*, Environment*, size_t, Stack*, jmp_buf);
};
struct List;
self->length = 0;
}
+Stack* Stack_construct()
+{
+ Stack* result = malloc(sizeof(Stack));
+ Stack_initialize(result);
+ return result;
+}
+
+void Stack_destruct(Stack* self)
+{
+ free(self);
+}
+
+bool Stack_any(Stack* self)
+{
+ return self->length > 0;
+}
+
void Stack_push(Stack* self, Object item)
{
assert(self->length < 256);
}
}
+typedef uint32_t StackSnapshot;
+
+StackSnapshot Stack_takeSnapshot(Stack* self)
+{
+ return (StackSnapshot) self->length;
+}
+
+void Stack_rewind(Stack* self, StackSnapshot snapshot)
+{
+ while(self->length > snapshot)
+ {
+ Object item = Stack_pop(self);
+ Object_deinitialize(&item);
+ }
+}
+
void Environment_deinitialize(Environment* self)
{
EnvironmentNode* next;
return EnvironmentPool_allocate(previous->overflow);
}
+Environment* Environment_construct(EnvironmentPool* environmentPool, Environment* parent)
+{
+ Environment* environment = EnvironmentPool_allocate(environmentPool);
+ Environment_initialize(environment, parent);
+ return environment;
+}
+
Object integerLiteral(int32_t literal)
{
Object result;
}
// TODO Make this conditionally added
-Object operator$concatenate(Object left, Object right)
+Object operator$concatenate(Stack* stack, jmp_buf parentJump, size_t line)
{
+ Object right = Stack_pop(stack);
+ Object left = Stack_pop(stack);
+
switch(left.type) {
case STRING_CONCATENATION:
case STRING_LITERAL:
}
{% for id in infix_declarations %}
-Object operator${{ id.name }}(Object left, Object right)
+Object operator${{ id.name }}(Stack* stack, jmp_buf parentJump, size_t line)
{
+ Object right = Stack_pop(stack);
+ Object left = Stack_pop(stack);
+
assert(left.type == {{ id.in_type.upper() }});
assert(right.type == {{ id.in_type.upper() }});
+ {% if id.name == 'integerDivide' or id.name == 'modularDivide' %}
+ if(right.instance.integer == 0)
+ {
+ fprintf(stderr, "DivisionByZeroError on line %zu\n", line);
+ longjmp(parentJump, 1);
+ }
+ {% endif %}
+
Object result;
result.type = {{ id.out_type.upper() }};
result.instance.{{ id.out_type.lower() }} = left.instance.{{ id.in_type.lower() }} {{ id.operator }} right.instance.{{ id.in_type.lower() }};
{% endfor %}
{% if 'pow' in builtins %}
-Object builtin$pow$implementation(EnvironmentPool* environmentPool, Environment* parent, size_t argc, Stack* stack)
+Object builtin$pow$implementation(EnvironmentPool* environmentPool, Environment* parent, size_t argc, Stack* stack, jmp_buf parentJump)
{
// Must unload items in reverse order
Object exponent = Stack_pop(stack);
{% endif %}
{% if 'print' in builtins %}
-Object builtin$print$implementation(EnvironmentPool* environmentPool, Environment* parent, size_t argc, Stack* stack)
+Object builtin$print$implementation(EnvironmentPool* environmentPool, Environment* parent, size_t argc, Stack* stack, jmp_buf parentJump)
{
Stack reverse_stack;
Stack_initialize(&reverse_stack);
case STRING_CONCATENATION:
Stack_push(stack, output.instance.string_concatenation->left);
- builtin$print$implementation(NULL, NULL, 1, stack);
+ builtin$print$implementation(NULL, NULL, 1, stack, parentJump);
Stack_push(stack, output.instance.string_concatenation->right);
- builtin$print$implementation(NULL, NULL, 1, stack);
+ builtin$print$implementation(NULL, NULL, 1, stack, parentJump);
break;
case STRING_LITERAL:
Stack* stack = &stackMemory;
Stack_initialize(stack);
+ jmp_buf jump;
+ if(setjmp(jump) != 0)
+ {
+ fprintf(stderr, "\tin __main__\n");
+
+ while(Stack_any(stack))
+ {
+ Object item = Stack_pop(stack);
+ Object_deinitialize(&item);
+ }
+ Environment_setLive(environment, false);
+ EnvironmentPool_destruct(environmentPool);
+
+ // TODO We would like to return something nonzero here, but that messes up Valgrind so we couldn't catch memory leaks
+ return 0;
+ }
+
// TODO Use the symbol from SYMBOL_LIST
{% for builtin in builtins %}
Environment_set(environment, "{{ builtin }}", builtin${{ builtin }});