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basic:dim command but syntax is unlike gw-basic

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minjaesong
2020-11-27 13:41:16 +09:00
parent 81705dbe0f
commit c367b98537
1 changed files with 11 additions and 24 deletions
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35
assets/basic.js
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@@ -172,29 +172,6 @@ let BasicFun = function(params, expression) {
this.params = params; this.params = params;
this.expression = expression; this.expression = expression;
} }
// DIM (array) constructor
/*let BasicArr = function() {
var args = Array.from(arguments);
if (args.length == 1)
throw lang.syntaxfehler(args[0]);
else if (args.length == 0)
throw "BasicIntpError: pass the line number!";
else {
// create nested array as defined
var dimsize = Number(args[1]);
var a = new Array(args[1]);
var internal = a;
for (var i = 2; i < args.length; i++) {
dimsize *= Number(args[i]);
var inner = new Array(args[i]);
internal.push(inner);
internal = inner;
}
this.array = a;
this.dimsize = dimsize;
}
}*/
// Abstract Syntax Tree // Abstract Syntax Tree
// creates empty tree node // creates empty tree node
let BasicAST = function() { let BasicAST = function() {
@@ -494,6 +471,14 @@ if no arg text were given (e.g. "10 NEXT"), args will have zero length
}); });
return a; return a;
}, },
"DIM" : function(lnum, args) {
return oneArgNum(lnum, args, function(size) {
if (size <= 0) throw lang.syntaxfehler(lnum, size);
let a = [];
for (let k = 0; k < size; k++) a.push(0);
return a;
});
},
"PRINT" : function(lnum, args, seps) { "PRINT" : function(lnum, args, seps) {
if (args.length == 0) if (args.length == 0)
println(); println();
@@ -1585,8 +1570,10 @@ bF._executeSyntaxTree = function(lnum, syntaxTree, recDepth) {
// func not in builtins (e.g. array access, user-defined function defuns) // func not in builtins (e.g. array access, user-defined function defuns)
if (func === undefined) { if (func === undefined) {
let someVar = bStatus.vars[funcName]; let someVar = bStatus.vars[funcName];
if (someVar === undefined) {
throw lang.syntaxfehler(lnum, funcName + " is undefined");
}
if (someVar.bvType != "array") { if (someVar.bvType != "array") {
serial.printerr(lang.syntaxfehler(lnum, funcName + " is not a function or an array"));
throw lang.syntaxfehler(lnum, funcName + " is not a function or an array"); throw lang.syntaxfehler(lnum, funcName + " is not a function or an array");
} }