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basic: indexing an array

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minjaesong
2020-11-15 17:56:44 +09:00
parent 552cd6da0e
commit c6eecdcac8
1 changed files with 15 additions and 9 deletions
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24
assets/tbas/basic.js
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@@ -294,16 +294,22 @@ bStatus.forStack = {};
bStatus.vars = {}; // contains instances of BasicVars bStatus.vars = {}; // contains instances of BasicVars
bStatus.defuns = {}; bStatus.defuns = {};
bStatus.rnd = 0; // stores mantissa (23 bits long) of single precision floating point number bStatus.rnd = 0; // stores mantissa (23 bits long) of single precision floating point number
bStatus.getArrayIndexFun = function(lnum, array) {
return function(lnum, args) {
// TODO test 1-d array
// NOTE: BASIC arrays are index in column-major order, which is OPPOSITE of C/JS/etc.
var rsvArg0 = resolve(args[0]);
if (rsvArg0 === undefined) throw lang.refError(lnum, rsvArg0.value);
if (isNaN(rsvArg0)) throw lang.illegalType(lnum, rsvArg0.value);
return array[rsvArg0];
};
};
bStatus.builtin = {
/* /*
@param lnum line number @param lnum line number
@param args instance of the SyntaxTreeReturnObj @param args instance of the SyntaxTreeReturnObj
*/ */
bStatus.getArrayIndexFun = function(lnum, array) {
return function(lnum, args) {
return "test lol";
};
};
bStatus.builtin = {
"REM" : function(lnum, args) {}, "REM" : function(lnum, args) {},
"=" : function(lnum, args) { "=" : function(lnum, args) {
if (args.length != 2) throw lang.syntaxfehler(lnum, args.length + " arguments were given"); if (args.length != 2) throw lang.syntaxfehler(lnum, args.length + " arguments were given");
@@ -1383,13 +1389,13 @@ bF._executeSyntaxTree = function(lnum, syntaxTree, recDepth) {
if (func === undefined) { if (func === undefined) {
let someVar = bStatus.vars[funcName]; let someVar = bStatus.vars[funcName];
if (someVar.bvType != "array") { if (someVar.bvType != "array") {
serial.printerr(lang.syntaxfehler(lnum, funcName + " is not defined")); serial.printerr(lang.syntaxfehler(lnum, funcName + " is not a function or an array"));
throw lang.syntaxfehler(lnum, funcName + " is not defined"); throw lang.syntaxfehler(lnum, funcName + " is not a function or an array");
} }
// TODO calling from bStatus.defuns // TODO calling from bStatus.defuns
func = bStatus.getArrayIndexFun(lnum, someVar); func = bStatus.getArrayIndexFun(lnum, someVar.bvLiteral);
} }
// call whatever the 'func' has whether it's builtin or we just made shit up right above // call whatever the 'func' has whether it's builtin or we just made shit up right above
try { try {