mirror of https://github.com/Baidicoot/rpncalc-v4
107 lines
2.6 KiB
JavaScript
107 lines
2.6 KiB
JavaScript
import {addDefn, addRPNASTDefn, makeFn, cloneElem} from './shiny.mjs';
|
|
import {parseExprs} from './parse.mjs';
|
|
import {tokenize} from './token.mjs';
|
|
|
|
const addRPNDefn = (name, def) => {
|
|
let toks = tokenize(def);
|
|
if (!toks) {
|
|
throw 'could not load builtin'
|
|
}
|
|
let ast = parseExprs(toks);
|
|
if (!ast.parsed) {
|
|
throw 'could not load builtin'
|
|
}
|
|
addRPNASTDefn(name, ast.parsed[0]);
|
|
}
|
|
|
|
const add = (_, args) => {
|
|
return [{type:"int", val:args[0] + args[1]}];
|
|
}
|
|
|
|
const sub = (_, args) => {
|
|
return [{type:"int", val:args[1] - args[0]}];
|
|
}
|
|
|
|
const div = (_, args) => {
|
|
return [{type:"int", val:args[1] / args[0]}];
|
|
}
|
|
|
|
const mult = (_, args) => {
|
|
return [{type:"int", val:args[0] * args[1]}];
|
|
}
|
|
|
|
const pow = (_, args) => {
|
|
return [{type:"int", val:Math.pow(args[1], args[0])}];
|
|
}
|
|
|
|
const root = (_, args) => {
|
|
return [{type:"int", val:Math.sqrt(args[0])}];
|
|
}
|
|
|
|
const type = (_, args) => {
|
|
return [{type:"type", val:args[0].type}];
|
|
}
|
|
|
|
const pair = (_, args) => {
|
|
return [{type:"pair", val:{fst:args[1], snd:args[0]}}];
|
|
}
|
|
|
|
const fst = (_, args) => [args[0].fst];
|
|
|
|
const snd = (_, args) => [args[0].snd];
|
|
|
|
const eq = (_, args) => {
|
|
if (args[0].type === args[1].type && args[0].val === args[1].val) {
|
|
console.log(args[0], args[1])
|
|
return [{type:"ident", val:"true"}];
|
|
} else {
|
|
return [{type:"ident", val:"false"}];
|
|
}
|
|
}
|
|
|
|
const tuple = (_, args) => {
|
|
return [makeFn(args[0], (_, args) => {return [{type:"tuple", val:args}]})];
|
|
}
|
|
|
|
const index = (_, args) => {
|
|
return [args[1][args[0]]];
|
|
}
|
|
|
|
const len = (_, args) => {
|
|
return [{type:"int", val:args[0].length}];
|
|
}
|
|
|
|
const coerce = (_, args) => {
|
|
if (args[0].type === "type") {
|
|
let o = cloneElem(args[1]);
|
|
o.type = args[0].val;
|
|
return o;
|
|
} else {
|
|
throw 'typeerror'
|
|
}
|
|
}
|
|
|
|
addDefn("+", ["int", "int"], add);
|
|
addDefn("-", ["int", "int"], sub);
|
|
addDefn("/", ["int", "int"], div);
|
|
addDefn("*", ["int", "int"], mult);
|
|
addDefn("^", ["int", "int"], pow);
|
|
addDefn("sqrt", ["int"], root);
|
|
addDefn("==", 2, eq);
|
|
addDefn("typeof", 1, type);
|
|
addDefn("pair", 2, pair);
|
|
addDefn("fst", ["pair"], fst);
|
|
addDefn("snd", ["pair"], snd);
|
|
addDefn("tuple", ["int"], tuple);
|
|
addDefn("!!", ["int", "tuple"], index);
|
|
addDefn("len", ["tuple"], len);
|
|
addDefn("unsafeCoerce", 2, coerce);
|
|
//addRPNDefn("unit", "(-> 0 arr)");
|
|
//addRPNDefn("mono", "(-> 1 arr)");
|
|
//addRPNDefn("unwrap", "(-> 0 !!)");
|
|
addRPNDefn("true", "(a b -> a)");
|
|
addRPNDefn("false", "(a b -> b)");
|
|
addRPNDefn("stop", "\"stop");
|
|
//addRPNDefn("id", "(a -> a)");
|
|
addRPNDefn("inv", "(x -> 1 x /)");
|
|
addRPNDefn("fold", "(x acc fn -> acc '(-> x acc fn 'fn fold) 'x \"stop ==)"); |