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https://github.com/sehugg/8bitworkshop.git
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basic: ON..GOSUB, CLEAR, rearranged platform menu
This commit is contained in:
Steven Hugg
parent
cf39cd4f58
commit
946037a1c9
19
index.html
19
index.html
@ -191,6 +191,7 @@ if (window.location.host.endsWith('8bitworkshop.com')) {
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<li><a class="dropdown-item" href="?platform=msx-libcv">MSX (libCV)</a></li>
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<li><a class="dropdown-item" href="?platform=apple2">Apple ][+</a></li>
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<li><a class="dropdown-item" href="?platform=zx">ZX Spectrum</a></li>
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<li><a class="dropdown-item" href="?platform=x86">x86 (FreeDOS)</a></li>
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</ul>
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</li>
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<li class="dropdown dropdown-submenu">
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@ -200,6 +201,7 @@ if (window.location.host.endsWith('8bitworkshop.com')) {
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<li><a class="dropdown-item" href="?platform=mw8080bw">Midway 8080</a></li>
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<li><a class="dropdown-item" href="?platform=galaxian-scramble">Galaxian/Scramble</a></li>
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<li><a class="dropdown-item" href="?platform=vector-z80color">Atari Color Vector (Z80)</a></li>
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<li><a class="dropdown-item" href="?platform=vector-ataricolor">Atari Color Vector (6502)</a></li>
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<li><a class="dropdown-item" href="?platform=williams-z80">Williams (Z80)</a></li>
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<li><a class="dropdown-item" href="?platform=sound_williams-z80">Williams Sound (Z80)</a></li>
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</ul>
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@ -211,6 +213,14 @@ if (window.location.host.endsWith('8bitworkshop.com')) {
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<li><a class="dropdown-item" href="?platform=verilog-vga">Verilog (VGA @ 25 Mhz)</a></li>
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</ul>
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</li>
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<li class="dropdown dropdown-submenu">
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<a tabindex="-1" href="#">Text-Based</a>
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<ul class="dropdown-menu">
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<li><a class="dropdown-item" href="?platform=basic">BASIC</a></li>
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<li><a class="dropdown-item" href="?platform=zmachine">Z-Machine</a></li>
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<li><a class="dropdown-item" href="?platform=markdown">Markdown Text Editor</a></li>
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</ul>
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</li>
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<li class="dropdown dropdown-submenu">
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<a tabindex="-1" href="#">MAME Emulators</a>
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<ul class="dropdown-menu">
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@ -222,15 +232,6 @@ if (window.location.host.endsWith('8bitworkshop.com')) {
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<li><a class="dropdown-item" href="?platform=nes.mame">NES (MAME)</a></li>
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</ul>
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</li>
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<li class="dropdown dropdown-submenu">
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<a tabindex="-1" href="#">Other</a>
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<ul class="dropdown-menu">
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<li><a class="dropdown-item" href="?platform=vector-ataricolor">Atari Color Vector (6502)</a></li>
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<li><a class="dropdown-item" href="?platform=x86">x86 (FreeDOS)</a></li>
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<li><a class="dropdown-item" href="?platform=zmachine">Z-Machine</a></li>
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<li><a class="dropdown-item" href="?platform=markdown">Markdown Text Editor</a></li>
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</ul>
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</li>
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</ul>
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</span>
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@ -88,7 +88,7 @@ export interface RETURN_Statement {
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}
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export interface ONGOTO_Statement {
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command: "ONGOTO";
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command: "ONGOTO" | "ONGOSUB";
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expr: Expr;
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labels: Expr[];
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}
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@ -706,9 +706,11 @@ export class BASICParser {
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}
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stmt__ON() : ONGOTO_Statement {
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var expr = this.parseExpr();
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this.expectToken('GOTO');
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var gotok = this.consumeToken();
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var cmd = {GOTO:'ONGOTO', GOSUB:'ONGOSUB'}[gotok.str];
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if (!cmd) this.compileError(`There should be a GOTO or GOSUB here.`);
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var labels = this.parseLabelList();
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return { command:'ONGOTO', expr:expr, labels:labels };
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return { command:cmd, expr:expr, labels:labels };
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}
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stmt__DEF() : DEF_Statement {
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var lexpr = this.parseVarSubscriptOrFunc();
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@ -728,6 +730,9 @@ export class BASICParser {
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this.decls[lexpr.name] = this.lasttoken.$loc;
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return { command:'GET', lexpr:lexpr };
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}
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stmt__CLEAR() : NoArgStatement {
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return { command:'CLEAR' };
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}
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// TODO: CHANGE A TO A$ (4th edition, A(0) is len and A(1..) are chars)
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stmt__OPTION() : OPTION_Statement {
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var tokname = this.consumeToken();
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@ -826,7 +831,7 @@ export const ECMA55_MINIMAL : BASICOptions = {
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validKeywords : ['BASE','DATA','DEF','DIM','END',
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'FOR','GO','GOSUB','GOTO','IF','INPUT','LET','NEXT','ON','OPTION','PRINT',
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'RANDOMIZE','READ','REM','RESTORE','RETURN','STEP','STOP','SUB','THEN','TO'
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],
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], // TODO: no ON...GOSUB
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validFunctions : ['ABS','ATN','COS','EXP','INT','LOG','RND','SGN','SIN','SQR','TAB','TAN'],
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validOperators : ['=', '<>', '<', '>', '<=', '>=', '+', '-', '*', '/', '^'],
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printZoneLength : 15,
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@ -857,7 +862,7 @@ export const ALTAIR_BASIC40 : BASICOptions = {
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tickComments : false,
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validKeywords : null, // all
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validFunctions : null, // all
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validOperators : null, // all ['\\','MOD','NOT','AND','OR','XOR','EQV','IMP'],
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validOperators : null, // all
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printZoneLength : 15,
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numericPadding : true,
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checkOverflow : true,
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@ -884,10 +889,19 @@ export const APPLESOFT_BASIC : BASICOptions = {
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maxStringLength : 255,
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sparseArrays : false,
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tickComments : false,
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validKeywords : null, // all
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validFunctions : ['ABS','ATN','COS','EXP','INT','LOG','RND','SGN','SIN','SQR','TAN',
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validKeywords : [
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'CLEAR','LET','DIM','DEF','FN','GOTO','GOSUB','RETURN','ON','POP',
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'FOR','TO','NEXT','IF','THEN','END','STOP','ONERR','RESUME',
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'PRINT','INPUT','GET','HOME','HTAB','VTAB',
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'INVERSE','FLASH','NORMAL','TEXT',
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'GR','COLOR','PLOT','HLIN','VLIN',
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'HGR','HGR2','HPLOT','HCOLOR','AT',
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'DATA','READ','RESTORE',
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'REM','TRACE','NOTRACE'],
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validFunctions : [
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'ABS','ATN','COS','EXP','INT','LOG','RND','SGN','SIN','SQR','TAN',
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'LEN','LEFT$','MID$','RIGHT$','STR$','VAL','CHR$','ASC',
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'FRE','SCRN','PDL','PEEK'], // TODO
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'FRE','SCRN','PDL','PEEK','POS'],
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validOperators : ['=', '<>', '<', '>', '<=', '>=', '+', '-', '*', '/', '^', 'AND', 'NOT', 'OR'],
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printZoneLength : 16,
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numericPadding : false,
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@ -90,15 +90,18 @@ export class BASICRuntime {
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reset() {
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this.curpc = 0;
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this.dataptr = 0;
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this.vars = {};
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this.arrays = {};
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this.defs = {};
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this.clearVars();
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this.forLoops = [];
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this.returnStack = [];
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this.column = 0;
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this.running = true;
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this.exited = false;
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}
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clearVars() {
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this.vars = {};
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this.arrays = {};
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this.defs = {}; // TODO? only in interpreters
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}
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getBuiltinFunctions() {
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var fnames = this.program && this.opts.validFunctions;
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@ -119,18 +122,13 @@ export class BASICRuntime {
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}
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getLineForPC(pc:number) {
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var line;
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do {
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line = this.pc2line.get(pc);
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if (line != null) break;
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} while (--pc >= 0);
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return line;
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var stmt = this.allstmts[pc];
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return stmt && stmt.$loc && stmt.$loc.line;
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}
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getLabelForPC(pc:number) {
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var lineno = this.getLineForPC(pc);
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var pgmline = this.program.lines[lineno];
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return pgmline ? pgmline.label : '?';
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var stmt = this.allstmts[pc];
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return stmt && stmt.$loc && stmt.$loc.label;
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}
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getCurrentSourceLocation() : SourceLocation {
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@ -138,6 +136,11 @@ export class BASICRuntime {
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return stmt && stmt.$loc;
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}
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getCurrentLabel() : string {
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var loc = this.getCurrentSourceLocation();
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return loc && loc.label;
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}
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getStatement() {
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return this.allstmts[this.curpc];
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}
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@ -439,6 +442,13 @@ export class BASICRuntime {
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if (value < 1 || value > labels.length)
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this.runtimeError(`I needed a number between 1 and ${labels.length}, but I got ${value}.`);
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this.gotoLabel(labels[value-1]);
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}
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onGosubLabel(value: number, ...labels: string[]) {
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value = this.ROUND(value);
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if (value < 1 || value > labels.length)
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this.runtimeError(`I needed a number between 1 and ${labels.length}, but I got ${value}.`);
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this.gosubLabel(labels[value-1]);
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}
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nextDatum() : basic.Value {
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@ -550,7 +560,10 @@ export class BASICRuntime {
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do__ONGOTO(stmt : basic.ONGOTO_Statement) {
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var expr = this.expr2js(stmt.expr);
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var labels = stmt.labels.map((arg) => this.expr2js(arg, {isconst:true})).join(', ');
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if (stmt.command == 'ONGOTO')
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return `this.onGotoLabel(${expr}, ${labels})`;
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else
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return `this.onGosubLabel(${expr}, ${labels})`;
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}
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do__DATA() {
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@ -596,6 +609,10 @@ export class BASICRuntime {
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})`;
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}
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do__CLEAR() {
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return 'this.clearVars()';
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}
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// TODO: ONERR, ON ERROR GOTO
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// TODO: "SUBSCRIPT ERROR" (range check)
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// TODO: gosubs nested too deeply
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@ -173,7 +173,17 @@ class BASICPlatform implements Platform {
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$.extend(true, this.runtime, state);
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}
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getDebugTree() {
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return this.runtime;
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return {
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Variables: this.runtime.vars,
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Arrays: this.runtime.arrays,
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Functions: this.runtime.defs,
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ForLoops: this.runtime.forLoops,
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ReturnStack: this.runtime.returnStack,
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CurrentLine: this.runtime.getCurrentLabel(),
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NextDatum: this.runtime.datums[this.runtime.dataptr],
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Dialect: this.runtime.opts,
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Internals: this.runtime,
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}
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}
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inspect(sym: string) {
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var o = this.runtime.vars[sym];
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