753 lines
25 KiB
Plaintext
753 lines
25 KiB
Plaintext
import mem:*
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import io:*
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import str:*
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import vec:*
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import vec_literals:*
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import util:*
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import map:*
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import rc:*
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import fungll:*
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adt KPValue_int {
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True, // 101 1 0
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False, // 100 1 0
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Env: *KPEnv, // 011 1 0
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Combiner: KPCombiner, // 010 1 0
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BuiltinCombiner: KPBuiltinCombiner, // ''' ' '
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String: str, // 001 1 0
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Symbol: str, // 000 1 0
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Int: int, // 0 0
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Vector: rc<vec<KPValue>>, //<10sizebits> 1
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// same encoding, but encodes 0-length null ptr
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Nil // 00000000000 1
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}
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obj KPEnv (Object) {
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var data: map<str, KPValue>
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var outer: *KPEnv
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fun construct(): *KPEnv {
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return construct(null<KPEnv>())
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}
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fun construct(outer: *KPEnv): *KPEnv {
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data.construct()
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this->outer = outer
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return this
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}
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fun copy_construct(old: *KPEnv): void {
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data.copy_construct(&old->data)
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outer = old->outer
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}
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fun destruct(): void {
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data.destruct()
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outer = null<KPEnv>()
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}
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fun operator=(other:ref KPEnv):void {
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destruct()
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copy_construct(&other)
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}
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fun set(key: str, val: KPValue) {
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data.set(key, val)
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}
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fun remove(key: str) {
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data.remove(key)
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}
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fun find(key: str): *KPEnv {
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if (data.contains_key(key)) {
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return this
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} else if (outer != null<KPEnv>()) {
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return outer->find(key)
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} else {
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return null<KPEnv>()
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}
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}
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fun get(key: str): KPResult {
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var env = find(key)
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if (env != null<KPEnv>()) {
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return KPResult::Ok(env->data.get(key))
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} else {
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return KPResult::Err(kpString(str("'") + key + "' not found"))
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}
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}
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fun to_string(): str {
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var to_ret = str()
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to_string(str("\t"), to_ret)
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return to_ret
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}
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fun to_string(tabs: ref str, s: ref str) {
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for (var i = 0; i < data.keys.size; i++;) {
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/*s += tabs + data.keys[i] + ": " + data.values[i] + "\n"*/
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s += tabs + data.keys[i] + "\n"
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}
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if outer != null<KPEnv>() {
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outer->to_string(tabs + "\t", s)
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}
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}
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}
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obj KPBuiltinCombiner (Object) {
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var name: str
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var fp: fun(vec<KPValue>, *KPEnv): KPResult
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fun construct(name: ref str, fp: fun(vec<KPValue>, *KPEnv): KPResult): *KPBuiltinCombiner {
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this->name.copy_construct(&name)
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this->fp = fp
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return this
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}
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fun copy_construct(old: *KPBuiltinCombiner): void {
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this->fp = old->fp
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this->name.copy_construct(&old->name)
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}
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fun destruct(): void {
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this->name.destruct()
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}
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fun operator=(other:ref KPBuiltinCombiner):void {
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destruct()
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copy_construct(&other)
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}
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fun operator==(other: ref KPBuiltinCombiner):bool {
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return false
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}
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fun call(params: vec<KPValue>, dynamic_env: KPValue): KPResult {
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if !dynamic_env.is_env() {
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return KPResult::Err(kpString(pr_str(dynamic_env, true) + " is not an env"))
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}
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return fp(params, dynamic_env.get_env())
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}
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}
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fun make_builtin_combiner(name: str, f: fun(vec<KPValue>, *KPEnv): KPResult): KPValue {
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var to_ret.construct(name, f): KPBuiltinCombiner
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return nmMV(KPValue_int::BuiltinCombiner(to_ret))
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}
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obj KPCombiner (Object) {
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var env: *KPEnv
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var dynamic_env_name: str
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var parameters: vec<str>
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var is_variadic: bool
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var body: *KPValue
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fun construct(env: *KPEnv, dynamic_env_name: str, parameters: vec<str>, is_variadic: bool, body: KPValue): *KPCombiner {
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this->env = env
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this->dynamic_env_name.copy_construct(&dynamic_env_name)
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this->parameters.copy_construct(¶meters)
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this->is_variadic = is_variadic
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this->body = new<KPValue>()
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this->body->copy_construct(&body)
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return this
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}
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fun copy_construct(old: *KPCombiner): void {
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this->env = old->env
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this->dynamic_env_name.copy_construct(&old->dynamic_env_name)
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this->parameters.copy_construct(&old->parameters)
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this->is_variadic = old->is_variadic
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this->body = new<KPValue>()
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this->body->copy_construct(old->body)
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}
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fun destruct(): void {
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this->env = null<KPEnv>()
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dynamic_env_name.destruct()
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parameters.destruct()
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delete(body)
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body = null<KPValue>()
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}
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fun operator=(other:ref KPCombiner):void {
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destruct()
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copy_construct(&other)
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}
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fun operator==(other: ref KPCombiner):bool {
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// not sure about env
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return env == other.env && dynamic_env_name == other.dynamic_env_name && parameters == other.parameters && is_variadic == other.is_variadic && body->equals(*other.body)
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}
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// no call b/c need to do in EVAL for TCO
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fun prep_call(params: ref vec<KPValue>, dynamic_env: KPValue): pair<*KPEnv, KPResult> {
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// tco
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if (!is_variadic && parameters.size != params.size) || (is_variadic && parameters.size > params.size + 1) {
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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))))
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}
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var new_env = new<KPEnv>()->construct(env)
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for (var i = 0; i < parameters.size; i++;) {
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if is_variadic && i == parameters.size - 1 {
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new_env->set(parameters[i], kpVector(params.slice(i, -1)))
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} else {
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new_env->set(parameters[i], params[i])
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}
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}
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new_env->set(dynamic_env_name, dynamic_env)
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return make_pair(new_env, KPResult::Ok(*body))
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}
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}
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obj KPValue (Object) {
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var internal: KPValue_int
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var meta: *KPValue
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fun construct(): *KPValue {
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internal.copy_construct(&KPValue_int::Nil());
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meta = null<KPValue>()
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}
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fun construct(i: ref KPValue_int, m: *KPValue): *KPValue {
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internal.copy_construct(&i);
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meta = m
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}
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fun copy_construct(other: *KPValue): void {
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internal.copy_construct(&other->internal);
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/*meta = other->meta*/
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if other->meta != null<KPValue>() {
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meta = new<KPValue>()
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meta->copy_construct(other->meta)
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} else {
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meta = null<KPValue>()
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}
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}
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fun operator=(other: ref KPValue): void {
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destruct()
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copy_construct(&other)
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}
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fun destruct(): void {
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if meta != null<KPValue>()
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delete(meta)
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internal.destruct()
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}
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fun equals(other: ref KPValue): bool {
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match (internal) {
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KPValue_int::Vector(d) { match (other.internal) {
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KPValue_int::Vector(db) {
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if d.get().size != db.get().size {
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return false
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}
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for (var i = 0; i < d.get().size; i++;) {
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if !d.get()[i].equals(db.get()[i]) {
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return false
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}
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}
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return true
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}
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} }
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KPValue_int::String(d) { match (other.internal) { KPValue_int::String(db) { return d == db; } } }
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KPValue_int::Int(d) { match (other.internal) { KPValue_int::Int(db) { return d == db; } } }
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KPValue_int::Symbol(d) { match (other.internal) { KPValue_int::Symbol(db) { return d == db; } } }
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KPValue_int::Combiner(d){ match (other.internal) { KPValue_int::Combiner(db) { return d == db; } } }
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KPValue_int::BuiltinCombiner(d) { match (other.internal) { KPValue_int::BuiltinCombiner(db) { return d == db; } } }
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KPValue_int::Env(e) { match (other.internal) { KPValue_int::Env(eb) { return e == eb; } } }
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KPValue_int::True() { match (other.internal) { KPValue_int::True() { return true; } } }
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KPValue_int::False() { match (other.internal) { KPValue_int::False() { return true; } } }
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KPValue_int::Nil() { match (other.internal) { KPValue_int::Nil() { return true; } } }
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}
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return false
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}
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fun deep_clone(): KPValue {
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match (internal) {
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KPValue_int::Vector(v) {
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return kpVector(v.get())
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}
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KPValue_int::Env(e) {
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var newenv = new<KPEnv>()
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newenv->copy_construct(e)
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return kpEnv(e)
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}
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}
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return *this
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}
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fun is_combiner(): bool {
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match (internal) {
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KPValue_int::Combiner(f) {
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return true
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}
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KPValue_int::BuiltinCombiner(f) {
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return true
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}
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}
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return false
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}
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fun is_env(): bool {
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match (internal) {
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KPValue_int::Env(e) {
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return true
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}
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}
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return false
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}
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fun get_env(): *KPEnv {
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match (internal) {
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KPValue_int::Env(e) {
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return e
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}
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}
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error("Tried to get env on not an env" + pr_str(*this, true))
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}
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fun is_vector(): bool {
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match (internal) {
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KPValue_int::Vector(v) {
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return true
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}
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}
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return false
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}
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fun get_vector_rc(): rc<vec<KPValue>> {
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match (internal) {
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KPValue_int::Vector(v) {
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return v
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}
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}
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error("Tried to get vec on not a vec" + pr_str(*this, true))
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}
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fun is_symbol(): bool {
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match (internal) {
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KPValue_int::Symbol(s) {
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return true
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}
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}
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return false
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}
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fun is_symbol(text: *char): bool {
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match (internal) {
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KPValue_int::Symbol(s) {
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return s == text
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}
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}
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return false
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}
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fun get_symbol_text(): str {
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match (internal) {
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KPValue_int::Symbol(s) {
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return s
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}
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}
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error("get_symbol_text on not symbol")
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}
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fun is_string(): bool {
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match (internal) {
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KPValue_int::String(s) {
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return true
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}
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}
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return false
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}
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fun get_string(): str {
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match (internal) {
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KPValue_int::String(s) {
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return s
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}
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}
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error("get_string on not a string")
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}
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fun is_int(): bool {
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match (internal) {
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KPValue_int::Int(i) {
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return true
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}
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}
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return false
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}
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fun get_int(): int {
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match (internal) {
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KPValue_int::Int(i) {
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return i
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}
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}
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error("get_int on not an int")
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}
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fun is_nil(): bool {
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match (internal) {
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KPValue_int::Nil() {
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return true
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}
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}
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return false
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}
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fun is_truthy(): bool {
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match (internal) {
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KPValue_int::False() {
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return false
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}
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KPValue_int::Nil() {
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return false
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}
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}
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return true
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}
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fun is_pair(): bool {
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return is_vector() && get_vector_rc().get().size > 0
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}
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}
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fun nmMV(i: ref KPValue_int): KPValue {
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var to_ret.construct(i, null<KPValue>()): KPValue
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return to_ret
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}
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fun kpTrue(): KPValue {
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return nmMV(KPValue_int::True())
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}
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fun kpFalse(): KPValue {
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return nmMV(KPValue_int::False())
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}
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fun bool_to_KPValue(b: bool): KPValue {
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if b {
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return nmMV(KPValue_int::True())
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} else {
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return nmMV(KPValue_int::False())
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}
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}
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fun kpString(s: ref str): KPValue {
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return nmMV(KPValue_int::String(s))
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}
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fun kpSymbol(s: ref str): KPValue {
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return nmMV(KPValue_int::Symbol(s))
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}
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fun kpInt(i: int): KPValue {
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return nmMV(KPValue_int::Int(i))
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}
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fun kpVector(v: ref vec<KPValue>): KPValue {
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var rcd.construct(v): rc<vec<KPValue>>
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return nmMV(KPValue_int::Vector(rcd))
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}
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fun kpNil(): KPValue {
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return nmMV(KPValue_int::Nil())
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}
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fun kpEnv(e: *KPEnv): KPValue {
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return nmMV(KPValue_int::Env(e))
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}
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fun read_str(grammar: ref Grammer<KPResult,KPValue>, s: str): pair<int, KPResult> {
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var BSR = fungll(grammar, grammar.start_symbol, s)
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var longest = -1
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for (var i = 0; i < BSR.data.size; i++;) {
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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 {
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longest = BSR.data[i].right
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}
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}
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if longest >= 0 {
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return make_pair(longest, grammar.eval_BSR(s.slice(0, longest), BSR))
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} else {
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println("trying to parse: " + s)
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println(str("length of BSR is: ") + BSR.size())
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for (var i = 0; i < BSR.data.size; i++;) {
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println(str() + i + ": " + grammar.to_string(BSR.data[i]))
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}
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println("Parse failed")
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return make_pair(-1, KPResult::Err(kpString(str("failed to parse"))))
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}
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}
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adt KPResult {
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Ok: KPValue,
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Err: KPValue
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}
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fun is_err(r: KPResult): bool {
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match (r) {
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KPResult::Err(e) {
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return true
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}
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}
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return false
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}
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fun get_err(r: KPResult): KPValue {
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match (r) {
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KPResult::Err(e) {
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return e
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}
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}
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/*return kpSymbol(str("get-err-not-error"))*/
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error("get-err-not-error")
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}
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fun get_value(r: KPResult): KPValue {
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match (r) {
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KPResult::Ok(v) {
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return v
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}
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}
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/*return kpSymbol(str("get-value-is-error"))*/
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error("get-value-is-error")
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}
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fun pr_str(v: KPValue, print_readably: bool): str {
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match (v.internal) {
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KPValue_int::Vector(l) {
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var to_ret = str("( ")
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for (var i = 0; i < l.get().size; i++;) {
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if (i != 0) {
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to_ret += " "
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}
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to_ret += pr_str(l.get()[i], print_readably)
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}
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return to_ret + " )"
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}
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KPValue_int::Int(i) {
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return to_string(i)
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}
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KPValue_int::String(s) {
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if print_readably {
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var to_ret = str("\"") //"
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for (var i = 0; i < s.length(); i++;) {
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if s[i] == '\n' {
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to_ret += '\\'
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to_ret += 'n'
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} else if s[i] == '\\' || s[i] == '"' {
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to_ret += '\\'
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to_ret += s[i]
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} else {
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to_ret += s[i]
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}
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}
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return to_ret + "\"" //"
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} else {
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return s
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}
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}
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KPValue_int::Symbol(s) {
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if print_readably {
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return "'" + s
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} else {
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return s
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}
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}
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KPValue_int::BuiltinCombiner(f) {
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return str("builtin combiner")
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}
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KPValue_int::Combiner(f) {
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return str("combiner")
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}
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KPValue_int::Env(e) {
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return str("environment")
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}
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KPValue_int::True() {
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return str("true")
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}
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KPValue_int::False() {
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return str("false")
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}
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KPValue_int::Nil() {
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return str("nil")
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}
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}
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error("can't print")
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}
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fun READ(grammar: ref Grammer<KPResult, KPValue>, s: str): KPResult {
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var to_ret = read_str(grammar, s)
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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("+"), 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(params[i], 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))
|
|
}
|
|
}
|
|
}
|