245 lines
8.2 KiB
C++
245 lines
8.2 KiB
C++
//: Calls can also generate products, using 'reply'.
|
|
|
|
:(scenario reply)
|
|
recipe main [
|
|
1:number, 2:number <- f 34
|
|
]
|
|
recipe f [
|
|
12:number <- next-ingredient
|
|
13:number <- add 1, 12:number
|
|
reply 12:number, 13:number
|
|
]
|
|
+mem: storing 34 in location 1
|
|
+mem: storing 35 in location 2
|
|
|
|
:(before "End Primitive Recipe Declarations")
|
|
REPLY,
|
|
:(before "End Primitive Recipe Numbers")
|
|
put(Recipe_ordinal, "reply", REPLY);
|
|
:(before "End Primitive Recipe Checks")
|
|
case REPLY: {
|
|
break; // checks will be performed by a transform below
|
|
}
|
|
:(before "End Primitive Recipe Implementations")
|
|
case REPLY: {
|
|
// Starting Reply
|
|
if (Trace_stream) {
|
|
trace(9999, "trace") << "reply: decrementing callstack depth from " << Trace_stream->callstack_depth << end();
|
|
--Trace_stream->callstack_depth;
|
|
if (Trace_stream->callstack_depth < 0) {
|
|
Current_routine->calls.clear();
|
|
goto stop_running_current_routine;
|
|
}
|
|
}
|
|
Current_routine->calls.pop_front();
|
|
// just in case 'main' returns a value, drop it for now
|
|
if (Current_routine->calls.empty()) goto stop_running_current_routine;
|
|
const instruction& caller_instruction = current_instruction();
|
|
for (long long int i = 0; i < SIZE(caller_instruction.products); ++i)
|
|
trace(9998, "run") << "result " << i << " is " << to_string(ingredients.at(i)) << end();
|
|
|
|
// make reply products available to caller
|
|
copy(ingredients.begin(), ingredients.end(), inserter(products, products.begin()));
|
|
// End Reply
|
|
break; // continue to process rest of *caller* instruction
|
|
}
|
|
|
|
//: Products can include containers and exclusive containers, addresses and arrays.
|
|
:(scenario reply_container)
|
|
recipe main [
|
|
3:point <- f 2
|
|
]
|
|
recipe f [
|
|
12:number <- next-ingredient
|
|
13:number <- copy 35
|
|
reply 12:point/raw
|
|
]
|
|
+run: result 0 is [2, 35]
|
|
+mem: storing 2 in location 3
|
|
+mem: storing 35 in location 4
|
|
|
|
//: Types in reply instructions are checked ahead of time.
|
|
|
|
:(before "End Checks")
|
|
Transform.push_back(check_types_of_reply_instructions);
|
|
:(code)
|
|
void check_types_of_reply_instructions(recipe_ordinal r) {
|
|
const recipe& caller = get(Recipe, r);
|
|
trace(9991, "transform") << "--- check types of reply instructions in recipe " << caller.name << end();
|
|
for (long long int i = 0; i < SIZE(caller.steps); ++i) {
|
|
const instruction& caller_instruction = caller.steps.at(i);
|
|
if (caller_instruction.is_label) continue;
|
|
if (caller_instruction.products.empty()) continue;
|
|
if (caller_instruction.operation < MAX_PRIMITIVE_RECIPES) continue;
|
|
const recipe& callee = get(Recipe, caller_instruction.operation);
|
|
for (long long int i = 0; i < SIZE(callee.steps); ++i) {
|
|
const instruction& reply_inst = callee.steps.at(i);
|
|
if (reply_inst.operation != REPLY) continue;
|
|
// check types with the caller
|
|
if (SIZE(caller_instruction.products) > SIZE(reply_inst.ingredients)) {
|
|
raise << maybe(caller.name) << "too few values replied from " << callee.name << '\n' << end();
|
|
break;
|
|
}
|
|
for (long long int i = 0; i < SIZE(caller_instruction.products); ++i) {
|
|
reagent lhs = reply_inst.ingredients.at(i);
|
|
canonize_type(lhs);
|
|
reagent rhs = caller_instruction.products.at(i);
|
|
canonize_type(rhs);
|
|
if (!types_coercible(rhs, lhs)) {
|
|
raise << maybe(callee.name) << "reply ingredient " << lhs.original_string << " can't be saved in " << rhs.original_string << '\n' << end();
|
|
raise << to_string(lhs.type) << " vs " << to_string(rhs.type) << '\n' << end();
|
|
goto finish_reply_check;
|
|
}
|
|
}
|
|
// check that any reply ingredients with /same-as-ingredient connect up
|
|
// the corresponding ingredient and product in the caller.
|
|
for (long long int i = 0; i < SIZE(caller_instruction.products); ++i) {
|
|
if (has_property(reply_inst.ingredients.at(i), "same-as-ingredient")) {
|
|
string_tree* tmp = property(reply_inst.ingredients.at(i), "same-as-ingredient");
|
|
if (!tmp || tmp->right) {
|
|
raise << maybe(caller.name) << "'same-as-ingredient' metadata should take exactly one value in " << to_string(reply_inst) << '\n' << end();
|
|
goto finish_reply_check;
|
|
}
|
|
long long int ingredient_index = to_integer(tmp->value);
|
|
if (ingredient_index >= SIZE(caller_instruction.ingredients)) {
|
|
raise << maybe(caller.name) << "too few ingredients in '" << to_string(caller_instruction) << "'\n" << end();
|
|
goto finish_reply_check;
|
|
}
|
|
if (!is_dummy(caller_instruction.products.at(i)) && !is_literal(caller_instruction.ingredients.at(ingredient_index)) && caller_instruction.products.at(i).name != caller_instruction.ingredients.at(ingredient_index).name) {
|
|
raise << maybe(caller.name) << "'" << to_string(caller_instruction) << "' should write to " << caller_instruction.ingredients.at(ingredient_index).original_string << " rather than " << caller_instruction.products.at(i).original_string << '\n' << end();
|
|
}
|
|
}
|
|
}
|
|
finish_reply_check:;
|
|
}
|
|
}
|
|
}
|
|
|
|
:(scenario reply_type_mismatch)
|
|
% Hide_errors = true;
|
|
recipe main [
|
|
3:number <- f 2
|
|
]
|
|
recipe f [
|
|
12:number <- next-ingredient
|
|
13:number <- copy 35
|
|
14:point <- copy 12:point/raw
|
|
reply 14:point
|
|
]
|
|
+error: f: reply ingredient 14:point can't be saved in 3:number
|
|
|
|
//: In mu we'd like to assume that any instruction doesn't modify its
|
|
//: ingredients unless they're also products. The /same-as-ingredient inside
|
|
//: the recipe's 'reply' will help catch accidental misuse of such
|
|
//: 'ingredient-products' (sometimes called in-out parameters in other languages).
|
|
|
|
:(scenario reply_same_as_ingredient)
|
|
% Hide_errors = true;
|
|
recipe main [
|
|
1:number <- copy 0
|
|
2:number <- test1 1:number # call with different ingredient and product
|
|
]
|
|
recipe test1 [
|
|
10:number <- next-ingredient
|
|
reply 10:number/same-as-ingredient:0
|
|
]
|
|
+error: main: '2:number <- test1 1:number' should write to 1:number rather than 2:number
|
|
|
|
:(scenario reply_same_as_ingredient_dummy)
|
|
recipe main [
|
|
1:number <- copy 0
|
|
_ <- test1 1:number # call with different ingredient and product
|
|
]
|
|
recipe test1 [
|
|
10:number <- next-ingredient
|
|
reply 10:number/same-as-ingredient:0
|
|
]
|
|
$error: 0
|
|
|
|
:(code)
|
|
string to_string(const vector<double>& in) {
|
|
if (in.empty()) return "[]";
|
|
ostringstream out;
|
|
if (SIZE(in) == 1) {
|
|
out << no_scientific(in.at(0));
|
|
return out.str();
|
|
}
|
|
out << "[";
|
|
for (long long int i = 0; i < SIZE(in); ++i) {
|
|
if (i > 0) out << ", ";
|
|
out << no_scientific(in.at(i));
|
|
}
|
|
out << "]";
|
|
return out.str();
|
|
}
|
|
|
|
//: Conditional reply.
|
|
|
|
:(scenario reply_if)
|
|
recipe main [
|
|
1:number <- test1
|
|
]
|
|
recipe test1 [
|
|
reply-if 0, 34
|
|
reply 35
|
|
]
|
|
+mem: storing 35 in location 1
|
|
|
|
:(scenario reply_if_2)
|
|
recipe main [
|
|
1:number <- test1
|
|
]
|
|
recipe test1 [
|
|
reply-if 1, 34
|
|
reply 35
|
|
]
|
|
+mem: storing 34 in location 1
|
|
|
|
:(before "End Rewrite Instruction(curr, recipe result)")
|
|
// rewrite `reply-if a, b, c, ...` to
|
|
// ```
|
|
// jump-unless a, 1:offset
|
|
// reply b, c, ...
|
|
// ```
|
|
if (curr.name == "reply-if") {
|
|
if (curr.products.empty()) {
|
|
curr.operation = get(Recipe_ordinal, "jump-unless");
|
|
curr.name = "jump-unless";
|
|
vector<reagent> results;
|
|
copy(++curr.ingredients.begin(), curr.ingredients.end(), inserter(results, results.end()));
|
|
curr.ingredients.resize(1);
|
|
curr.ingredients.push_back(reagent("1:offset"));
|
|
result.steps.push_back(curr);
|
|
curr.clear();
|
|
curr.operation = get(Recipe_ordinal, "reply");
|
|
curr.name = "reply";
|
|
curr.ingredients.swap(results);
|
|
}
|
|
else {
|
|
raise << "'reply-if' never yields any products\n" << end();
|
|
}
|
|
}
|
|
// rewrite `reply-unless a, b, c, ...` to
|
|
// ```
|
|
// jump-if a, 1:offset
|
|
// reply b, c, ...
|
|
// ```
|
|
if (curr.name == "reply-unless") {
|
|
if (curr.products.empty()) {
|
|
curr.operation = get(Recipe_ordinal, "jump-if");
|
|
curr.name = "jump-if";
|
|
vector<reagent> results;
|
|
copy(++curr.ingredients.begin(), curr.ingredients.end(), inserter(results, results.end()));
|
|
curr.ingredients.resize(1);
|
|
curr.ingredients.push_back(reagent("1:offset"));
|
|
result.steps.push_back(curr);
|
|
curr.clear();
|
|
curr.operation = get(Recipe_ordinal, "reply");
|
|
curr.name = "reply";
|
|
curr.ingredients.swap(results);
|
|
}
|
|
else {
|
|
raise << "'reply-unless' never yields any products\n" << end();
|
|
}
|
|
}
|