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basic: rudimentary auto-currying

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minjaesong
2020-12-24 17:35:53 +09:00
parent 85334beff8
commit 34696dd51b
3 changed files with 27 additions and 9 deletions
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6
assets/disk0/home/basic/autocurrytest.bas Normal file
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@@ -0,0 +1,6 @@
10 DEFUN SINC(P)=SIN(P)/P
20 DEFUN OTHERFUN(A,B)=A+"|"+B
30 DEFUN PLOTLINE(F,X)=MAP(OTHERFUN<~F(X),1 TO 5):REM needs auto-currying
31 DEFUN PLOTLINE2(F,X)=MAP(OTHERFUN<~F<~X,1 TO 5):REM WORKS!
100 PRINT PLOTLINE(SINC,333)
101 PRINT PLOTLINE2(SINC,333)

11
assets/disk0/home/basic/sinc2.bas
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@@ -3,14 +3,7 @@
10 DEFUN SINC(P)=IF P==0 THEN 1.0 ELSE SIN(P)/P
20 DEFUN TOCHAR(P,X)=IF (X==ROUND(ZEROLINE+P*AMP)) THEN "@" ELSE IF (X==ZEROLINE) THEN "|" ELSE CHR(250)
30 DEFUN SCONCAT(ACC,S)=ACC+S
40 REM DEFUN PLOTLINE(X)=FOLD(SCONCAT,"",MAP(TOCHAR<~X,1 TO ZEROLINE+AMP))
41 REM PLOTLINE(F,X)=FOLD(SCONCAT,"",MAP(TOCHAR<~F(X),1 TO ZEROLINE+AMP)):REM does not work
42 DEFUN PLOTLINE(F,X)=FOLD(SCONCAT,"",MAP(TOCHAR<~F<~X,1 TO ZEROLINE+AMP)):REM WORKS!
40 DEFUN PLOTLINE(F,X)=FOLD(SCONCAT,"",MAP(TOCHAR<~F<~X,1 TO ZEROLINE+AMP))
100 FOR I=-40 TO 40
110 PRINT PLOTLINE(SINC,I)
120 NEXT
999 END
1000 REM Known bugs
1010 DEFUN PLOTLINE(F,X)=FOLD(SCONCAT,CHR(0),MAP(TOCHAR<~F(X),1 TO ZEROLINE+AMP))
1011 REM calling user-defined function within DEFUN is not working
120 NEXT

19
assets/disk0/tbas/basic.js
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@@ -2858,6 +2858,7 @@ bF._interpretLine = function(lnum, cmd) {
let syntaxTrees = bF._parseTokens(lnum, tokens, states);
// syntax tree pruning
// turn UNARYMINUS(num) to -num
syntaxTrees.forEach(syntaxTree => {
if (syntaxTree !== undefined) {
@@ -2880,6 +2881,24 @@ bF._interpretLine = function(lnum, cmd) {
}
});
// automatically apply currying
// '(<~) FNQ (P X Y)' into '(<~) FNQ ((<~) P ((<~) X Y))'
// FIXME this autocurrying is very likely to be a janky-ass-shit
syntaxTrees.forEach(syntaxTree => {
if (syntaxTree !== undefined) {
bF._recurseApplyAST(syntaxTree, tree => {
if (tree.astValue == "<~" && tree.astLeaves[1] !== undefined && tree.astLeaves[1].astLeaves[0] !== undefined) {
let subTree = new BasicAST();
subTree.astValue = "<~";
subTree.astType = "op";
subTree.astLnum = tree.astLnum;
subTree.astLeaves = [tree.astLeaves[1], tree.astLeaves[1].astLeaves[0]];
tree.astLeaves[1] = subTree;
}
});
}
});
if (_debugprintHighestLevel) {
syntaxTrees.forEach((t,i) => {
serial.println("\nParsed Statement #"+(i+1));