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|
//: Jump primitives
void test_jump_can_skip_instructions() {
run(
"def main [\n"
" jump 1:offset\n"
" 1:num <- copy 1\n"
"]\n"
);
CHECK_TRACE_CONTENTS(
"run: jump {1: \"offset\"}\n"
);
CHECK_TRACE_DOESNT_CONTAIN("run: {1: \"number\"} <- copy {1: \"literal\"}");
CHECK_TRACE_DOESNT_CONTAIN("mem: storing 1 in location 1");
}
:(before "End Primitive Recipe Declarations")
JUMP,
:(before "End Primitive Recipe Numbers")
put(Recipe_ordinal, "jump", JUMP);
:(before "End Primitive Recipe Checks")
case JUMP: {
if (SIZE(inst.ingredients) != 1) {
raise << maybe(get(Recipe, r).name) << "'" << to_original_string(inst) << "' should get exactly one ingredient\n" << end();
break;
}
if (!is_literal(inst.ingredients.at(0))) {
raise << maybe(get(Recipe, r).name) << "first ingredient of '" << to_original_string(inst) << "' should be a label or offset, but '" << inst.ingredients.at(0).name << "' has type '" << names_to_string_without_quotes(inst.ingredients.at(0).type) << "'\n" << end();
break;
}
if (!inst.products.empty()) {
raise << maybe(get(Recipe, r).name) << "'jump' instructions write no products\n" << end();
break;
}
break;
}
:(before "End Primitive Recipe Implementations")
case JUMP: {
assert(current_instruction().ingredients.at(0).initialized);
current_step_index() += ingredients.at(0).at(0)+1;
trace(Callstack_depth+1, "run") << "jumping to instruction " << current_step_index() << end();
// skip rest of this instruction
write_products = false;
fall_through_to_next_instruction = false;
break;
}
//: special type to designate jump targets
:(before "End Mu Types Initialization")
put(Type_ordinal, "offset", 0);
:(code)
void test_jump_backward() {
run(
"def main [\n"
" jump 1:offset\n" // 0 -+
" jump 3:offset\n" // | +-+ 1
// \/ /\ |
" jump -2:offset\n" // 2 +-->+ |
"]\n" // \/ 3
);
CHECK_TRACE_CONTENTS(
"run: jump {1: \"offset\"}\n"
"run: jump {-2: \"offset\"}\n"
"run: jump {3: \"offset\"}\n"
);
}
void test_jump_takes_no_products() {
Hide_errors = true;
run(
"def main [\n"
" 1:num <- jump 1\n"
"]\n"
);
CHECK_TRACE_CONTENTS(
"error: main: 'jump' instructions write no products\n"
);
}
:(before "End Primitive Recipe Declarations")
JUMP_IF,
:(before "End Primitive Recipe Numbers")
put(Recipe_ordinal, "jump-if", JUMP_IF);
:(before "End Primitive Recipe Checks")
case JUMP_IF: {
if (SIZE(inst.ingredients) != 2) {
raise << maybe(get(Recipe, r).name) << "'" << to_original_string(inst) << "' should get exactly two ingredients\n" << end();
break;
}
if (!is_mu_address(inst.ingredients.at(0)) && !is_mu_scalar(inst.ingredients.at(0))) {
raise << maybe(get(Recipe, r).name) << "'" << to_original_string(inst) << "' requires a boolean for its first ingredient, but '" << inst.ingredients.at(0).name << "' has type '" << names_to_string_without_quotes(inst.ingredients.at(0).type) << "'\n" << end();
break;
}
if (!is_literal(inst.ingredients.at(1))) {
raise << maybe(get(Recipe, r).name) << "'" << to_original_string(inst) << "' requires a label or offset for its second ingredient, but '" << inst.ingredients.at(1).name << "' has type '" << names_to_string_without_quotes(inst.ingredients.at(1).type) << "'\n" << end();
break;
}
if (!inst.products.empty()) {
raise << maybe(get(Recipe, r).name) << "'jump-if' instructions write no products\n" << end();
break;
}
// End JUMP_IF Checks
break;
}
:(before "End Primitive Recipe Implementations")
case JUMP_IF: {
assert(current_instruction().ingredients.at(1).initialized);
if (!scalar_ingredient(ingredients, 0)) {
trace(Callstack_depth+1, "run") << "jump-if fell through" << end();
break;
}
current_step_index()<
|