819 lines
28 KiB
Plaintext
819 lines
28 KiB
Plaintext
import mem:*
|
|
import io:*
|
|
import str:*
|
|
import vec:*
|
|
import vec_literals:*
|
|
import util:*
|
|
import map:*
|
|
import rc:*
|
|
|
|
import fungll:*
|
|
|
|
adt KPValue_int {
|
|
True, // 101 1 0
|
|
False, // 100 1 0
|
|
Env: *KPEnv, // 011 1 0
|
|
Combiner: KPCombiner, // 010 1 0
|
|
BuiltinCombiner: KPBuiltinCombiner, // ''' ' '
|
|
String: str, // 001 1 0
|
|
Symbol: str, // 000 1 0
|
|
Int: int, // 0 0
|
|
|
|
Vector: rc<vec<KPValue>>, //<10sizebits> 1
|
|
// same encoding, but encodes 0-length null ptr
|
|
Nil // 00000000000 1
|
|
}
|
|
obj KPEnv (Object) {
|
|
var data: map<str, KPValue>
|
|
var outer: *KPEnv
|
|
fun construct(): *KPEnv {
|
|
return construct(null<KPEnv>())
|
|
}
|
|
fun construct(outer: *KPEnv): *KPEnv {
|
|
data.construct()
|
|
this->outer = outer
|
|
return this
|
|
}
|
|
fun copy_construct(old: *KPEnv): void {
|
|
data.copy_construct(&old->data)
|
|
outer = old->outer
|
|
}
|
|
fun destruct(): void {
|
|
data.destruct()
|
|
outer = null<KPEnv>()
|
|
}
|
|
fun operator=(other:ref KPEnv):void {
|
|
destruct()
|
|
copy_construct(&other)
|
|
}
|
|
fun set(key: str, val: KPValue) {
|
|
data.set(key, val)
|
|
}
|
|
fun remove(key: str) {
|
|
data.remove(key)
|
|
}
|
|
fun find(key: str): *KPEnv {
|
|
if (data.contains_key(key)) {
|
|
return this
|
|
} else if (outer != null<KPEnv>()) {
|
|
return outer->find(key)
|
|
} else {
|
|
return null<KPEnv>()
|
|
}
|
|
}
|
|
fun get(key: str): KPResult {
|
|
var env = find(key)
|
|
if (env != null<KPEnv>()) {
|
|
return KPResult::Ok(env->data.get(key))
|
|
} else {
|
|
return KPResult::Err(kpString(str("'") + key + "' not found"))
|
|
}
|
|
}
|
|
fun to_string(): str {
|
|
var to_ret = str()
|
|
to_string(str("\t"), to_ret)
|
|
return to_ret
|
|
}
|
|
fun to_string(tabs: ref str, s: ref str) {
|
|
for (var i = 0; i < data.keys.size; i++;) {
|
|
s += tabs + data.keys[i] + ": " + pr_str(data.values[i], true) + "\n"
|
|
/*s += tabs + data.keys[i] + "\n"*/
|
|
}
|
|
if outer != null<KPEnv>() {
|
|
outer->to_string(tabs + "\t", s)
|
|
}
|
|
}
|
|
}
|
|
obj KPBuiltinCombiner (Object) {
|
|
var name: str
|
|
var fp: fun(vec<KPValue>, *KPEnv): KPResult
|
|
fun construct(name: ref str, fp: fun(vec<KPValue>, *KPEnv): KPResult): *KPBuiltinCombiner {
|
|
this->name.copy_construct(&name)
|
|
this->fp = fp
|
|
return this
|
|
}
|
|
fun copy_construct(old: *KPBuiltinCombiner): void {
|
|
this->fp = old->fp
|
|
this->name.copy_construct(&old->name)
|
|
}
|
|
fun destruct(): void {
|
|
this->name.destruct()
|
|
}
|
|
fun operator=(other:ref KPBuiltinCombiner):void {
|
|
destruct()
|
|
copy_construct(&other)
|
|
}
|
|
fun operator==(other: ref KPBuiltinCombiner):bool {
|
|
return false
|
|
}
|
|
fun call(params: vec<KPValue>, dynamic_env: KPValue): KPResult {
|
|
if !dynamic_env.is_env() {
|
|
return KPResult::Err(kpString(pr_str(dynamic_env, true) + " is not an env"))
|
|
}
|
|
return fp(params, dynamic_env.get_env())
|
|
}
|
|
}
|
|
fun make_builtin_combiner(name: str, f: fun(vec<KPValue>, *KPEnv): KPResult): KPValue {
|
|
var to_ret.construct(name, f): KPBuiltinCombiner
|
|
return nmMV(KPValue_int::BuiltinCombiner(to_ret))
|
|
}
|
|
obj KPCombiner (Object) {
|
|
var env: *KPEnv
|
|
var dynamic_env_name: str
|
|
var parameters: vec<str>
|
|
var is_variadic: bool
|
|
var body: *KPValue
|
|
fun construct(env: *KPEnv, dynamic_env_name: str, parameters: vec<str>, is_variadic: bool, body: KPValue): *KPCombiner {
|
|
this->env = env
|
|
this->dynamic_env_name.copy_construct(&dynamic_env_name)
|
|
this->parameters.copy_construct(¶meters)
|
|
this->is_variadic = is_variadic
|
|
this->body = new<KPValue>()
|
|
this->body->copy_construct(&body)
|
|
return this
|
|
}
|
|
fun copy_construct(old: *KPCombiner): void {
|
|
this->env = old->env
|
|
this->dynamic_env_name.copy_construct(&old->dynamic_env_name)
|
|
this->parameters.copy_construct(&old->parameters)
|
|
this->is_variadic = old->is_variadic
|
|
this->body = new<KPValue>()
|
|
this->body->copy_construct(old->body)
|
|
}
|
|
fun destruct(): void {
|
|
this->env = null<KPEnv>()
|
|
dynamic_env_name.destruct()
|
|
parameters.destruct()
|
|
delete(body)
|
|
body = null<KPValue>()
|
|
}
|
|
fun operator=(other:ref KPCombiner):void {
|
|
destruct()
|
|
copy_construct(&other)
|
|
}
|
|
fun operator==(other: ref KPCombiner):bool {
|
|
// not sure about env
|
|
return env == other.env && dynamic_env_name == other.dynamic_env_name && parameters == other.parameters && is_variadic == other.is_variadic && body->equals(*other.body)
|
|
}
|
|
// no call b/c need to do in EVAL for TCO
|
|
fun prep_call(params: ref vec<KPValue>, dynamic_env: KPValue): pair<*KPEnv, KPResult> {
|
|
// tco
|
|
if (!is_variadic && parameters.size != params.size) || (is_variadic && parameters.size > params.size + 1) {
|
|
return make_pair(null<KPEnv>(), KPResult::Err(kpString(str("combiner called with the wrong number of parameters: ") + params.size + " but expecting " + parameters.size + ": [ " + str(",").join(parameters) + "], was: " + pr_str(kpVector(params), true) + ", function body is " + pr_str(*body, true))))
|
|
}
|
|
var new_env = new<KPEnv>()->construct(env)
|
|
for (var i = 0; i < parameters.size; i++;) {
|
|
if is_variadic && i == parameters.size - 1 {
|
|
new_env->set(parameters[i], kpVector(params.slice(i, -1)))
|
|
} else {
|
|
new_env->set(parameters[i], params[i])
|
|
}
|
|
}
|
|
new_env->set(dynamic_env_name, dynamic_env)
|
|
/*println("Calling with\n" + new_env->to_string())*/
|
|
return make_pair(new_env, KPResult::Ok(*body))
|
|
}
|
|
}
|
|
|
|
obj KPValue (Object) {
|
|
var internal: KPValue_int
|
|
var meta: *KPValue
|
|
|
|
fun construct(): *KPValue {
|
|
internal.copy_construct(&KPValue_int::Nil());
|
|
meta = null<KPValue>()
|
|
}
|
|
fun construct(i: ref KPValue_int, m: *KPValue): *KPValue {
|
|
internal.copy_construct(&i);
|
|
meta = m
|
|
}
|
|
fun copy_construct(other: *KPValue): void {
|
|
internal.copy_construct(&other->internal);
|
|
/*meta = other->meta*/
|
|
if other->meta != null<KPValue>() {
|
|
meta = new<KPValue>()
|
|
meta->copy_construct(other->meta)
|
|
} else {
|
|
meta = null<KPValue>()
|
|
}
|
|
}
|
|
fun operator=(other: ref KPValue): void {
|
|
destruct()
|
|
copy_construct(&other)
|
|
}
|
|
fun destruct(): void {
|
|
if meta != null<KPValue>()
|
|
delete(meta)
|
|
internal.destruct()
|
|
}
|
|
fun equals(other: ref KPValue): bool {
|
|
match (internal) {
|
|
KPValue_int::Vector(d) { match (other.internal) {
|
|
KPValue_int::Vector(db) {
|
|
if d.get().size != db.get().size {
|
|
return false
|
|
}
|
|
for (var i = 0; i < d.get().size; i++;) {
|
|
if !d.get()[i].equals(db.get()[i]) {
|
|
return false
|
|
}
|
|
}
|
|
return true
|
|
}
|
|
} }
|
|
KPValue_int::String(d) { match (other.internal) { KPValue_int::String(db) { return d == db; } } }
|
|
KPValue_int::Int(d) { match (other.internal) { KPValue_int::Int(db) { return d == db; } } }
|
|
KPValue_int::Symbol(d) { match (other.internal) { KPValue_int::Symbol(db) { return d == db; } } }
|
|
KPValue_int::Combiner(d){ match (other.internal) { KPValue_int::Combiner(db) { return d == db; } } }
|
|
KPValue_int::BuiltinCombiner(d) { match (other.internal) { KPValue_int::BuiltinCombiner(db) { return d == db; } } }
|
|
KPValue_int::Env(e) { match (other.internal) { KPValue_int::Env(eb) { return e == eb; } } }
|
|
KPValue_int::True() { match (other.internal) { KPValue_int::True() { return true; } } }
|
|
KPValue_int::False() { match (other.internal) { KPValue_int::False() { return true; } } }
|
|
KPValue_int::Nil() { match (other.internal) { KPValue_int::Nil() { return true; } } }
|
|
}
|
|
return false
|
|
}
|
|
fun deep_clone(): KPValue {
|
|
match (internal) {
|
|
KPValue_int::Vector(v) {
|
|
return kpVector(v.get())
|
|
}
|
|
KPValue_int::Env(e) {
|
|
var newenv = new<KPEnv>()
|
|
newenv->copy_construct(e)
|
|
return kpEnv(e)
|
|
}
|
|
}
|
|
return *this
|
|
}
|
|
fun is_combiner(): bool {
|
|
match (internal) {
|
|
KPValue_int::Combiner(f) {
|
|
return true
|
|
}
|
|
KPValue_int::BuiltinCombiner(f) {
|
|
return true
|
|
}
|
|
}
|
|
return false
|
|
}
|
|
fun is_env(): bool {
|
|
match (internal) {
|
|
KPValue_int::Env(e) {
|
|
return true
|
|
}
|
|
}
|
|
return false
|
|
}
|
|
fun get_env(): *KPEnv {
|
|
match (internal) {
|
|
KPValue_int::Env(e) {
|
|
return e
|
|
}
|
|
}
|
|
error("Tried to get env on not an env" + pr_str(*this, true))
|
|
}
|
|
fun is_vector(): bool {
|
|
match (internal) {
|
|
KPValue_int::Vector(v) {
|
|
return true
|
|
}
|
|
}
|
|
return false
|
|
}
|
|
fun get_vector_rc(): rc<vec<KPValue>> {
|
|
match (internal) {
|
|
KPValue_int::Vector(v) {
|
|
return v
|
|
}
|
|
}
|
|
error("Tried to get vec on not a vec" + pr_str(*this, true))
|
|
}
|
|
fun is_symbol(): bool {
|
|
match (internal) {
|
|
KPValue_int::Symbol(s) {
|
|
return true
|
|
}
|
|
}
|
|
return false
|
|
}
|
|
fun is_symbol(text: *char): bool {
|
|
match (internal) {
|
|
KPValue_int::Symbol(s) {
|
|
return s == text
|
|
}
|
|
}
|
|
return false
|
|
}
|
|
fun get_symbol_text(): str {
|
|
match (internal) {
|
|
KPValue_int::Symbol(s) {
|
|
return s
|
|
}
|
|
}
|
|
error("get_symbol_text on not symbol")
|
|
}
|
|
fun is_string(): bool {
|
|
match (internal) {
|
|
KPValue_int::String(s) {
|
|
return true
|
|
}
|
|
}
|
|
return false
|
|
}
|
|
fun get_string(): str {
|
|
match (internal) {
|
|
KPValue_int::String(s) {
|
|
return s
|
|
}
|
|
}
|
|
error("get_string on not a string")
|
|
}
|
|
fun is_int(): bool {
|
|
match (internal) {
|
|
KPValue_int::Int(i) {
|
|
return true
|
|
}
|
|
}
|
|
return false
|
|
}
|
|
fun get_int(): int {
|
|
match (internal) {
|
|
KPValue_int::Int(i) {
|
|
return i
|
|
}
|
|
}
|
|
error("get_int on not an int")
|
|
}
|
|
fun is_nil(): bool {
|
|
match (internal) {
|
|
KPValue_int::Nil() {
|
|
return true
|
|
}
|
|
}
|
|
return false
|
|
}
|
|
fun is_truthy(): bool {
|
|
match (internal) {
|
|
KPValue_int::False() {
|
|
return false
|
|
}
|
|
KPValue_int::Nil() {
|
|
return false
|
|
}
|
|
}
|
|
return true
|
|
}
|
|
fun is_pair(): bool {
|
|
return is_vector() && get_vector_rc().get().size > 0
|
|
}
|
|
}
|
|
|
|
|
|
fun nmMV(i: ref KPValue_int): KPValue {
|
|
var to_ret.construct(i, null<KPValue>()): KPValue
|
|
return to_ret
|
|
}
|
|
fun kpTrue(): KPValue {
|
|
return nmMV(KPValue_int::True())
|
|
}
|
|
fun kpFalse(): KPValue {
|
|
return nmMV(KPValue_int::False())
|
|
}
|
|
fun bool_to_KPValue(b: bool): KPValue {
|
|
if b {
|
|
return nmMV(KPValue_int::True())
|
|
} else {
|
|
return nmMV(KPValue_int::False())
|
|
}
|
|
}
|
|
fun kpString(s: ref str): KPValue {
|
|
return nmMV(KPValue_int::String(s))
|
|
}
|
|
fun kpSymbol(s: ref str): KPValue {
|
|
return nmMV(KPValue_int::Symbol(s))
|
|
}
|
|
fun kpInt(i: int): KPValue {
|
|
return nmMV(KPValue_int::Int(i))
|
|
}
|
|
fun kpVector(v: ref vec<KPValue>): KPValue {
|
|
var rcd.construct(v): rc<vec<KPValue>>
|
|
return nmMV(KPValue_int::Vector(rcd))
|
|
}
|
|
fun kpNil(): KPValue {
|
|
return nmMV(KPValue_int::Nil())
|
|
}
|
|
fun kpEnv(e: *KPEnv): KPValue {
|
|
return nmMV(KPValue_int::Env(e))
|
|
}
|
|
|
|
fun read_str(grammar: ref Grammer<KPResult,KPValue>, s: str): pair<int, KPResult> {
|
|
var BSR = fungll(grammar, grammar.start_symbol, s)
|
|
var longest = -1
|
|
for (var i = 0; i < BSR.data.size; i++;) {
|
|
if BSR.data[i].nonterminal == grammar.start_symbol && BSR.data[i].left == 0 && BSR.data[i].idx_into_rule == grammar.nonterminals[(-1*BSR.data[i].nonterminal)-1][BSR.data[i].rule_idx].size {
|
|
longest = BSR.data[i].right
|
|
}
|
|
}
|
|
if longest >= 0 {
|
|
return make_pair(longest, grammar.eval_BSR(s.slice(0, longest), BSR))
|
|
} else {
|
|
println("trying to parse: " + s)
|
|
println(str("length of BSR is: ") + BSR.size())
|
|
for (var i = 0; i < BSR.data.size; i++;) {
|
|
println(str() + i + ": " + grammar.to_string(BSR.data[i]))
|
|
}
|
|
println("Parse failed")
|
|
return make_pair(-1, KPResult::Err(kpString(str("failed to parse"))))
|
|
}
|
|
}
|
|
|
|
adt KPResult {
|
|
Ok: KPValue,
|
|
Err: KPValue
|
|
}
|
|
fun is_err(r: KPResult): bool {
|
|
match (r) {
|
|
KPResult::Err(e) {
|
|
return true
|
|
}
|
|
}
|
|
return false
|
|
}
|
|
fun get_err(r: KPResult): KPValue {
|
|
match (r) {
|
|
KPResult::Err(e) {
|
|
return e
|
|
}
|
|
}
|
|
/*return kpSymbol(str("get-err-not-error"))*/
|
|
error("get-err-not-error")
|
|
}
|
|
fun get_value(r: KPResult): KPValue {
|
|
match (r) {
|
|
KPResult::Ok(v) {
|
|
return v
|
|
}
|
|
}
|
|
/*return kpSymbol(str("get-value-is-error"))*/
|
|
error("get-value-is-error")
|
|
}
|
|
fun pr_str(v: KPValue, print_readably: bool): str {
|
|
match (v.internal) {
|
|
KPValue_int::Vector(l) {
|
|
var to_ret = str("( ")
|
|
for (var i = 0; i < l.get().size; i++;) {
|
|
if (i != 0) {
|
|
to_ret += " "
|
|
}
|
|
to_ret += pr_str(l.get()[i], print_readably)
|
|
}
|
|
return to_ret + " )"
|
|
}
|
|
KPValue_int::Int(i) {
|
|
return to_string(i)
|
|
}
|
|
KPValue_int::String(s) {
|
|
if print_readably {
|
|
var to_ret = str("\"") //"
|
|
for (var i = 0; i < s.length(); i++;) {
|
|
if s[i] == '\n' {
|
|
to_ret += '\\'
|
|
to_ret += 'n'
|
|
} else if s[i] == '\\' || s[i] == '"' {
|
|
to_ret += '\\'
|
|
to_ret += s[i]
|
|
} else {
|
|
to_ret += s[i]
|
|
}
|
|
}
|
|
return to_ret + "\"" //"
|
|
} else {
|
|
return s
|
|
}
|
|
}
|
|
KPValue_int::Symbol(s) {
|
|
if print_readably {
|
|
return "'" + s
|
|
} else {
|
|
return s
|
|
}
|
|
}
|
|
KPValue_int::BuiltinCombiner(f) {
|
|
return str("builtin combiner")
|
|
}
|
|
KPValue_int::Combiner(f) {
|
|
return str("combiner")
|
|
}
|
|
KPValue_int::Env(e) {
|
|
return str("environment")
|
|
}
|
|
KPValue_int::True() {
|
|
return str("true")
|
|
}
|
|
KPValue_int::False() {
|
|
return str("false")
|
|
}
|
|
KPValue_int::Nil() {
|
|
return str("nil")
|
|
}
|
|
}
|
|
error("can't print")
|
|
}
|
|
|
|
fun READ(grammar: ref Grammer<KPResult, KPValue>, s: str): KPResult {
|
|
var to_ret = read_str(grammar, s)
|
|
if to_ret.first != s.length() {
|
|
if is_err(to_ret.second) {
|
|
return to_ret.second
|
|
} else {
|
|
println("parsed to var: " + pr_str(get_value(to_ret.second), true))
|
|
}
|
|
error("parsed some, but not all")
|
|
}
|
|
return to_ret.second
|
|
}
|
|
|
|
fun EVAL(env: *KPEnv, ast: KPValue): KPResult {
|
|
// for tco
|
|
while (true) {
|
|
match (ast.internal) {
|
|
KPValue_int::Vector(l) {
|
|
if (l.get().size == 0) {
|
|
return KPResult::Err(kpString(str("Eval a zero length vector")))
|
|
} else {
|
|
// this breaks tco?
|
|
var combiner = EVAL(env, l.get()[0])
|
|
if is_err(combiner) {
|
|
return combiner
|
|
}
|
|
match (get_value(combiner).internal) {
|
|
KPValue_int::BuiltinCombiner(f) {
|
|
return f.call(l.get().slice(1,-1), kpEnv(env))
|
|
}
|
|
KPValue_int::Combiner(f) {
|
|
var call_pair = f.prep_call(l.get().slice(1, -1), kpEnv(env))
|
|
if is_err(call_pair.second) {
|
|
return call_pair.second
|
|
}
|
|
env = call_pair.first
|
|
ast = get_value(call_pair.second)
|
|
continue
|
|
}
|
|
}
|
|
return KPResult::Err(kpString(str("trying to call not a combiner: ") + pr_str(l.get()[0], true)))
|
|
}
|
|
}
|
|
KPValue_int::Symbol(s) {
|
|
return env->get(s)
|
|
}
|
|
}
|
|
// everything else is self-evaluating
|
|
return KPResult::Ok(ast)
|
|
}
|
|
}
|
|
|
|
fun rep(grammar: ref Grammer<KPResult, KPValue>, env: *KPEnv, a: str): str {
|
|
var read = READ(grammar, a)
|
|
if is_err(read) {
|
|
return pr_str(get_err(read), true)
|
|
} else {
|
|
var evaled = EVAL(env, get_value(read))
|
|
if is_err(evaled) {
|
|
return str("Exception: ") + pr_str(get_err(evaled), true)
|
|
} else {
|
|
return pr_str(get_value(evaled), true)
|
|
}
|
|
}
|
|
}
|
|
|
|
fun function_call(f: KPValue, params: ref vec<KPValue>, env: KPValue): KPResult {
|
|
match (f.internal) {
|
|
KPValue_int::BuiltinCombiner(f) {
|
|
return f.call(params, env)
|
|
}
|
|
KPValue_int::Combiner(f) {
|
|
var call_pair = f.prep_call(params, env)
|
|
if is_err(call_pair.second) {
|
|
return call_pair.second
|
|
}
|
|
return EVAL(call_pair.first, get_value(call_pair.second))
|
|
}
|
|
}
|
|
return KPResult::Err(kpString(str("trying to apply not a combiner: ") + pr_str(f ,true)))
|
|
}
|
|
|
|
fun print_wrapper(params: ref vec<KPValue>, sep: *char, print_readably: bool): str {
|
|
var to_ret = str()
|
|
for (var i = 0; i < params.size; i++;) {
|
|
to_ret += pr_str(params[i], print_readably)
|
|
if i != params.size-1 {
|
|
to_ret += sep
|
|
}
|
|
}
|
|
return to_ret
|
|
}
|
|
|
|
fun main(argc: int, argv: **char): int {
|
|
|
|
var grammar.construct(): Grammer<KPResult, KPValue>
|
|
|
|
var ret_nil_term: fun(ref KPValue, ref str, int, int): KPResult = fun(_: ref KPValue, input: ref str, l: int, r: int): KPResult { return KPResult::Ok(kpNil()); }
|
|
var ret_nil_sym: fun(ref KPValue, ref vec<KPResult>): KPResult = fun(_: ref KPValue, x: ref vec<KPResult>): KPResult { return KPResult::Ok(kpNil()); }
|
|
var ret_0_sym: fun(ref KPValue, ref vec<KPResult>): KPResult = fun(_: ref KPValue, x: ref vec<KPResult>): KPResult { return x[0]; }
|
|
|
|
var WS = grammar.add_new_nonterminal("WS", vec(grammar.add_terminal("( | |
|
|
|(;[ -~]*
|
|
))+", kpNil(), ret_nil_term)), kpNil(), ret_nil_sym)
|
|
var optional_WS = grammar.add_new_nonterminal("optional_WS", vec<int>(), kpNil(), ret_nil_sym)
|
|
grammar.add_to_nonterminal(optional_WS, vec(WS), kpNil(), ret_nil_sym)
|
|
|
|
var atom = grammar.add_new_nonterminal("atom", vec(grammar.add_terminal("-?[0-9]+", kpNil(), fun(_: ref KPValue, input: ref str, l: int, r: int): KPResult { return KPResult::Ok(kpInt(string_to_num<int>(input.slice(l,r)))); })), kpNil(), ret_0_sym)
|
|
grammar.add_to_nonterminal(atom, vec(grammar.add_terminal("\"([#-[]| |[]-~]|(\\\\)|(\\n)|(\\t)|(\\\*)|(\\0)|
|
|
|[ -!]|(\\\\\"))*\"", kpNil(), fun(_: ref KPValue, input: ref str, l: int, r: int): KPResult { //"
|
|
var to_ret = str()
|
|
for (var i = l+1; i < r-1; i++;) {
|
|
if input[i] == '\\' {
|
|
if input[i+1] == 'n' {
|
|
to_ret += '\n'
|
|
} else if input[i+1] == '\\' || input[i+1] == '"' {
|
|
to_ret += input[i+1]
|
|
} else {
|
|
return KPResult::Err(kpString(str("bad string escape")))
|
|
}
|
|
// skip
|
|
i++
|
|
} else {
|
|
to_ret += input[i]
|
|
}
|
|
}
|
|
return KPResult::Ok(kpString(to_ret));
|
|
})), kpNil(), ret_0_sym)
|
|
grammar.add_to_nonterminal(atom, vec(grammar.add_terminal("-|(([a-z]|[A-Z]|_|\\*|/|\\?|\\+|!|=|&|<|>)([a-z]|[A-Z]|_|[0-9]|\\*|\\?|\\+|-|!|=|&|<|>)*)", kpNil(), fun(_: ref KPValue, input: ref str, l: int, r: int): KPResult {
|
|
var s = input.slice(l,r)
|
|
if s == "true" {
|
|
return KPResult::Ok(kpTrue());
|
|
} else if s == "false" {
|
|
return KPResult::Ok(kpFalse());
|
|
} else if s == "nil" {
|
|
return KPResult::Ok(kpNil());
|
|
} else {
|
|
return KPResult::Ok(kpSymbol(input.slice(l,r)));
|
|
}
|
|
})), kpNil(), ret_0_sym)
|
|
|
|
var form = grammar.add_new_nonterminal("form", vec(atom), kpNil(), ret_0_sym)
|
|
var space_forms = grammar.add_new_nonterminal("space_forms", vec<int>(), kpNil(), fun(_: ref KPValue, x: ref vec<KPResult>): KPResult {
|
|
return KPResult::Ok(kpVector(vec<KPValue>()))
|
|
})
|
|
grammar.add_to_nonterminal(space_forms, vec(form), kpNil(), fun(_: ref KPValue, x: ref vec<KPResult>): KPResult {
|
|
if is_err(x[0]) {
|
|
return x[0]
|
|
}
|
|
return KPResult::Ok(kpVector(vec(get_value(x[0]))))
|
|
})
|
|
grammar.add_to_nonterminal(space_forms, vec(form, WS, space_forms), kpNil(), fun(_: ref KPValue, x: ref vec<KPResult>): KPResult {
|
|
if is_err(x[0]) {
|
|
return x[0]
|
|
}
|
|
if is_err(x[2]) {
|
|
return x[2]
|
|
}
|
|
return KPResult::Ok(kpVector(vec(get_value(x[0])) + get_value(x[2]).get_vector_rc().get()))
|
|
})
|
|
|
|
grammar.add_to_nonterminal(form, vec(grammar.add_terminal("\\(", kpNil(), ret_nil_term),
|
|
optional_WS,
|
|
grammar.add_terminal("\\)", kpNil(), ret_nil_term)), kpNil(), fun(_: ref KPValue, x: ref vec<KPResult>): KPResult { return KPResult::Ok(kpVector(vec<KPValue>())); })
|
|
grammar.add_to_nonterminal(form, vec(grammar.add_terminal("\\(", kpNil(), ret_nil_term),
|
|
optional_WS,
|
|
space_forms,
|
|
optional_WS,
|
|
grammar.add_terminal("\\)", kpNil(), ret_nil_term)), kpNil(), fun(_: ref KPValue, x: ref vec<KPResult>): KPResult { return x[2]; })
|
|
|
|
grammar.set_start_symbol(form)
|
|
|
|
|
|
var env = new<KPEnv>()->construct()
|
|
|
|
env->set(str("vau"), make_builtin_combiner(str("vau"), fun(params: vec<KPValue>, dynamic_env: *KPEnv): KPResult {
|
|
var param_symbols = vec<str>()
|
|
if params.size != 3 {
|
|
return KPResult::Err(kpString(str("bad number of params to vau")))
|
|
}
|
|
if !params[0].is_symbol() {
|
|
return KPResult::Err(kpString(str("first param to vau is not symbol")))
|
|
}
|
|
var dynamic_env_name = params[0].get_symbol_text()
|
|
var is_variadic = false
|
|
var parameters = vec<str>()
|
|
if !params[1].is_vector() {
|
|
return KPResult::Err(kpString(str("second param to vau is not vector")))
|
|
}
|
|
var parameter_objects = params[1].get_vector_rc()
|
|
for (var i = 0; i < parameter_objects.get().size; i++;) {
|
|
if !parameter_objects.get()[i].is_symbol() {
|
|
return KPResult::Err(kpString(str("second param to vau has a not symbol member")))
|
|
}
|
|
var parameter = parameter_objects.get()[i].get_symbol_text()
|
|
if parameter == "&" {
|
|
is_variadic = true
|
|
} else {
|
|
parameters.add(parameter)
|
|
}
|
|
}
|
|
var to_ret.construct(dynamic_env, dynamic_env_name, parameters, is_variadic, params[2]) : KPCombiner
|
|
return KPResult::Ok(nmMV(KPValue_int::Combiner(to_ret)))
|
|
}));
|
|
|
|
env->set(str("eval"), make_builtin_combiner(str("eval"), fun(params: vec<KPValue>, dynamic_env: *KPEnv): KPResult {
|
|
var evaled_params = vec<KPValue>()
|
|
for (var i = 0; i < params.size; i++;) {
|
|
var ip = EVAL(dynamic_env, params[i])
|
|
if is_err(ip) {
|
|
return ip
|
|
}
|
|
evaled_params.add(get_value(ip))
|
|
}
|
|
if evaled_params.size == 1 {
|
|
return EVAL(dynamic_env, evaled_params[0])
|
|
} else if params.size == 2 {
|
|
if !evaled_params[1].is_env() {
|
|
return KPResult::Err(kpString(str("second param to eval is not an environment")))
|
|
}
|
|
return EVAL(evaled_params[1].get_env(), evaled_params[0])
|
|
}
|
|
return KPResult::Err(kpString(str("wrong number of params to eval")))
|
|
}));
|
|
|
|
env->set(str("set!"), make_builtin_combiner(str("set!"), fun(params: vec<KPValue>, dynamic_env: *KPEnv): KPResult {
|
|
if params.size != 2 {
|
|
return KPResult::Err(kpString(str("not 2 params to set!")))
|
|
}
|
|
if !params[0].is_symbol() {
|
|
return KPResult::Err(kpString(str("first parameter to set! is not a symbol")))
|
|
}
|
|
var data = EVAL(dynamic_env, params[1])
|
|
if is_err(data) {
|
|
return data
|
|
}
|
|
dynamic_env->set(params[0].get_symbol_text(), get_value(data))
|
|
return KPResult::Ok(kpNil())
|
|
}));
|
|
|
|
env->set(str("+"), make_builtin_combiner(str("+"), fun(params: vec<KPValue>, dynamic_env: *KPEnv): KPResult {
|
|
var to_ret = 0
|
|
for (var i = 0; i < params.size; i++;) {
|
|
var ip = EVAL(dynamic_env, params[i])
|
|
if is_err(ip) {
|
|
return ip
|
|
}
|
|
match (get_value(ip).internal) {
|
|
KPValue_int::Int(v) {
|
|
to_ret += v
|
|
continue
|
|
}
|
|
}
|
|
return KPResult::Err(kpString(str("called + with not an int: ") + pr_str(get_value(ip), false)))
|
|
}
|
|
return KPResult::Ok(kpInt(to_ret))
|
|
}));
|
|
|
|
if argc == 3 && str(argv[1]) == "-C" {
|
|
error("-C not implemented")
|
|
//env->set(str("*ARGV*"), kpNil())
|
|
//var evaled = ERS(vec(kpString(str(argv[2]))))
|
|
//if is_err(evaled) {
|
|
// printlnerr(str("Exception: ") + pr_str(get_err(evaled), true))
|
|
//} else {
|
|
// println("Result: " + pr_str(get_value(evaled), true))
|
|
//}
|
|
} else if argc >= 2 {
|
|
var params = vec<KPValue>()
|
|
for (var i = 2; i < argc; i++;) {
|
|
params.add(kpString(str(argv[i])))
|
|
}
|
|
env->set(str("*ARGV*"), kpVector(params))
|
|
var eval_result_str = rep(grammar, env, str("(load-file \"") + argv[1] + "\")")
|
|
println(eval_result_str)
|
|
if eval_result_str.length() >= 11 && eval_result_str.slice(0,11) == "Exception: " {
|
|
error("aborting compile")
|
|
}
|
|
// check for compile
|
|
var main = env->get(str("main"))
|
|
if !is_err(main) {
|
|
println("Starting compile!")
|
|
error("Compiler not implemented")
|
|
} else {
|
|
println("No main function to compile, exiting")
|
|
}
|
|
} else {
|
|
while (true) {
|
|
var line = get_line(str("user> "), 1024)
|
|
if (line == "***EOF***")
|
|
break
|
|
println(rep(grammar, env, line))
|
|
}
|
|
}
|
|
}
|