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Add fflush and some bugfix to extern calling - io can be used now for primitives

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Nathan Braswell
2016-05-15 11:47:02 -07:00
parent 967ae3d68e
commit 029d44ac81
1 changed files with 12 additions and 3 deletions
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15
stdlib/interpreter.krak
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@@ -350,11 +350,15 @@ obj interpreter (Object) {
})
if (results.size != 1)
error(string("wrong number of mains to call: ") + results.size)
println("=============")
println("calling main!")
println("=============")
var var_stack = stack<map<string, value>>()
var result = call_function(results[0], vector<value>(), &var_stack)
println("\nMain returned: ")
println("=============")
println("Main returned: ")
print_value(result)
println("=============")
}
fun interpret_function_call(func_call: *ast_node, var_stack: *stack<map<string, value>>): pair<value, control_flow> {
// should handle dot style method call here
@@ -405,7 +409,7 @@ obj interpreter (Object) {
return value::variable(make_pair(get_real_value(dereference_val).pointer.first, dereference_val.pointer.second->clone_with_decreased_indirection()))
}
// check for built-in-ish externs (everything the standard library needs)
if (func_name == "printf" || func_name == "malloc" || func_name == "free")
if (func_name == "printf" || func_name == "malloc" || func_name == "free" || func_name == "fflush")
return call_built_in_extern(func_name, parameters)
if (!func->function.body_statement)
error(string("trying to call unsupported extern function: ") + func_name)
@@ -423,7 +427,9 @@ obj interpreter (Object) {
return to_ret
}
fun call_built_in_extern(func_name: string, parameters: vector<value>): value {
println(string("calling func: ") + func_name)
/*println(string("calling func: ") + func_name)*/
for (var i = 0; i < parameters.size; i++;)
parameters[i] = get_real_value(parameters[i])
if (func_name == "printf") {
assert(parameters.size == 2 && is_pointer(parameters[0]) && is_pointer(parameters[1]), "Calling printf with wrong params")
printf((parameters[0].pointer.first) cast *char, (parameters[1].pointer.first) cast *char)
@@ -434,6 +440,9 @@ obj interpreter (Object) {
} else if (func_name == "free") {
assert(parameters.size == 1 && is_pointer(parameters[0]), "Calling free with wrong params")
free(parameters[0].pointer.first)
} else if (func_name == "fflush") {
assert(parameters.size == 1 && is_integer(parameters[0]), "Calling fflush with wrong params")
fflush(parameters[0].integer)
} else if (func_name == "exit") {
assert(parameters.size == 1 && is_integer(parameters[0]), "Calling exit with wrong params")
exit(parameters[0].integer)