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basic: got rid of BASICLine in favor of list of statements, multipleStmtsPerLine
This commit is contained in:
Steven Hugg
parent
e5de701419
commit
74238b334f
@ -1,12 +1,99 @@
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OPTION DIALECT DARTMOUTH
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10 PRINT "HELLO! LET'S PROGRAM IN BASIC."
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15 PRINT
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20 INPUT "WOULD YOU MIND TYPING IN YOUR NAME";A$
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25 PRINT
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30 PRINT "THANKS, ";A$;"! THIS WILL BE FUN!"
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35 PRINT
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40 INPUT "NOW TELL ME YOUR FAVORITE NUMBER";N
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45 PRINT
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50 PRINT "THAT'S A GOOD ONE! I LIKE";N^2;"MYSELF."
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60 PRINT "NICE MEETING YOU, ";A$;"."
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001 REM THIS IS A PROGRAM WRITTEN IN BASIC.
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002 REM YOU CAN WRITE ONE STATEMENT PER LINE.
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003 REM EACH STATEMENT MUST HAVE A LINE NUMBER.
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004 REM THE "REM" LINES ARE COMMENTS, WHICH ARE IGNORED
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005 ' YOU CAN ALSO DO COMMENTS WITH APOSTROPHES
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006 ' LET'S START WITH A "PRINT"...
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100 PRINT "HELLO! LET'S PROGRAM IN BASIC."
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101 PRINT ' <-- THIS PRINTS A BLANK LINE, IT LOOKS NICER
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105 ' "INPUT" WAITS FOR USER INPUT FROM THE KEYBOARD
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106 ' THE NUMBER ENTERED WILL GO INTO THE VARIABLE "N"
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110 INPUT "FIRST, TELL ME YOUR FAVORITE NUMBER";N
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111 PRINT
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115 ' YOU CAN DO CALCULATIONS WITH THE + - / * OPERATORS
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116 ' THE ^ IS AN EXPONENT, SO N^2 IS N-SQUARED
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119 ' "LET" ASSIGNS THE RESULT TO A VARIABLE
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120 LET Z = N^2
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121 ' THE SEMICOLON ";" SEPARATES THINGS TO BE PRINTED
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122 PRINT "THAT'S A GOOD ONE! I LIKE";Z;"MYSELF."
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123 PRINT
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125 ' IF A VARIABLE ENDS IN "$" IT IS A STRING
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126 ' AND CONTAINS CHARACTERS INSTEAD OF A NUMBER
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127 ' LET'S READ FROM THE KEYBOARD INTO THE A$ VARIABLE
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130 INPUT "WOULD YOU MIND TYPING IN YOUR NAME";A$
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131 PRINT
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135 ' WE CAN PRINT MULTIPLE THINGS PER LINE
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136 ' IN THIS BASIC DIALECT, NUMBERS ARE PRINTED
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137 ' WITH SPACES BEFORE AND AFTER
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140 PRINT "GOOD TO MEET YOU, ";A$;" WHO LOVES";N;"!"
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141 PRINT
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150 INPUT "WOULD YOU LIKE TO SEE ME CALCULATE";B$
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151 PRINT
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155 ' "IF" CAN TEST A CONDITION
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156 ' AND JUMP TO A DIFFERENT LINE IF IT IS TRUE
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160 IF B$ = "Y" THEN 180
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161 IF B$ = "YES" THEN 180
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170 PRINT "TOO BAD, ";A$;"! WE'RE DOING THIS."
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180 PRINT
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190 PRINT "WATCH ME COUNT..."
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195 ' THIS "FOR" STATEMENT STARTS A LOOP WHICH SETS
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196 ' VARIABLE I TO 1 AND COUNTS TO 50
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200 FOR I = 1 TO 50
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210 PRINT I, ' USE A COMMA FOR NEAT PRINT ZONES
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220 NEXT I ' REPEAT LOOP
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225 ' USING THE COMMA (OR SEMICOLON) IN THE PRINT STATEMENT
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226 ' KEEPS THE CURSOR ON THE SAME LINE, SO WE PRINT
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227 ' A BLANK LINE TO RETURN TO THE LEFT MARGIN
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230 PRINT
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240 PRINT "I CAN ALSO GRAPH TRIG FUNCTIONS!"
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245 ' YOU CAN DEFINE YOUR OWN FUNCTIONS WITH "DEF"
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246 ' FUNCTIONS MUST START WITH "FN"
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250 DEF FNY(X) = (SIN(X*0.3)+1)*30+2
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260 FOR I = 1 TO 25
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270 PRINT TAB(FNY(I));"*"
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280 NEXT I
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300 ' YOU CAN DEFINE AN ARRAY WITH "DIM"
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301 ' YOU CAN HAVE ARRAYS OF EITHER NUMBERS OR STRINGS
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310 DIM T$(15),A$(15),W(15)
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315 ' "READ" LOADS FROM "DATA" STATEMENTS
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316 ' DATA CAN BE ANYWHERE, OURS IS AT LINE 900
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320 FOR I = 1 TO 15
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330 READ T$(I),A$(I),W(I)
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340 NEXT I
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350 ' NOW THE ARRAYS ARE FILLED WITH DATA
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351 ' SO LET'S PICK A VALUE AT RANDOM
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352 ' THE RND FUNCTION RETURNS A RANDOM NUMBER
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353 ' FIRST WE USE "RANDOMIZE" TO INITIALIZE THE
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354 ' RANDOM NUMBER GENERATOR
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360 RANDOMIZE
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362 ' "LET" ASSIGNS A VARIABLE FROM AN EXPRESSION
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370 LET J = INT(15*RND)
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380 PRINT "MY FAVORITE SONG IS '";T$(J);"'"
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390 PRINT "BY ";A$(J);", DO YOU KNOW IT?"
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400 PRINT "IT SPENT";W(J);"WEEKS ON THE CHARTS."
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410 PRINT
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890 ' HERE'S THE DATA WE READ EARLIER
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891 ' WE CAN USE NUMBERS, QUOTED OR UNQUOTED STRINGS
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900 DATA "HELLO, GOODBYE",THE BEATLES,2
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901 DATA "JUDY IN DISGUISE",JOHN FRED AND HIS PLAYBOY BAND,2
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902 DATA "GREEN TAMBOURINE",THE LEMON PIPERS,1
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903 DATA "LOVE IS BLUE",PAUL MAURIAT,5
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904 DATA "(SITTIN' ON) THE DOCK OF THE BAY",OTIS REDDING,4
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905 DATA "HONEY",BOBBY GOLDSBORO,5
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906 DATA "TIGHTEN UP",ARCHIE BELL & THE DRELLS,3
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907 DATA "MRS. ROBINSON",SIMON & GARFUNKEL,3
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908 DATA "THIS GUY'S IN LOVE WITH YOU",HERB ALPERT,4
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909 DATA "GRAZING IN THE GRASS",HUGH MASEKELA,2
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910 DATA "HELLO, I LOVE YOU",THE DOORS,2
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911 DATA "PEOPLE GOT TO BE FREE",THE RASCALS,5
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912 DATA "HARPER VALLEY PTA",JEANNIE C. RILEY,1
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913 DATA "HEY JUDE",THE BEATLES,9
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914 DATA "LOVE CHILD",DIANA ROSS & THE SUPREMES,2
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915 DATA "I HEARD IT THROUGH THE GRAPEVINE",MARVIN GAYE,3
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979 ' WE'RE DONE, SAY GOODBYE TO THE USER
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980 PRINT "I APOLOGIZE, BUT I AM FATIGUED FROM ALL OF THIS"
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981 PRINT "CALCULATING. I SHALL TAKE MY LEAVE OF YOU NOW."
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990 PRINT "NICE MEETING YOU, ";A$;"."
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998 ' PROGRAMS MUST END WITH "END" IN THIS DIALECT
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999 END
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@ -8,6 +8,7 @@ export interface BASICOptions {
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uppercaseOnly : boolean; // convert everything to uppercase?
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optionalLabels : boolean; // can omit line numbers and use labels?
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optionalWhitespace : boolean; // can "crunch" keywords? also, eat extra ":" delims
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multipleStmtsPerLine : boolean; // multiple statements separated by ":"
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varNaming : 'A'|'A1'|'AA'|'*'; // only allow A0-9 for numerics, single letter for arrays/strings
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squareBrackets : boolean; // "[" and "]" interchangable with "(" and ")"?
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tickComments : boolean; // support 'comments?
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@ -234,14 +235,10 @@ export type ScopeStartStatement = (IF_Statement | FOR_Statement | WHILE_Statemen
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export type ScopeEndStatement = NEXT_Statement | WEND_Statement;
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export interface BASICLine {
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label: string;
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stmts: Statement[];
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}
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export interface BASICProgram {
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opts: BASICOptions;
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lines: BASICLine[];
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stmts: Statement[];
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labels: { [label: string]: number }; // label -> PC
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}
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class Token {
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@ -326,9 +323,10 @@ export class BASICParser {
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opts : BASICOptions = DIALECTS['DEFAULT'];
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optionCount : number; // how many OPTION stmts so far?
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maxlinelen : number = 255; // maximum line length
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stmts : Statement[];
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errors: WorkerError[];
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listings: CodeListingMap;
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labels: { [label: string]: BASICLine };
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labels: { [label: string]: number }; // label -> PC
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targets: { [targetlabel: string]: SourceLocation };
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varrefs: { [name: string]: SourceLocation }; // references
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fnrefs: { [name: string]: string[] }; // DEF FN call graph
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@ -343,11 +341,12 @@ export class BASICParser {
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constructor() {
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this.optionCount = 0;
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this.lineno = 0;
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this.curlabel = null;
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this.stmts = [];
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this.labels = {};
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this.targets = {};
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this.errors = [];
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this.lineno = 0;
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this.curlabel = null;
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this.listings = {};
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this.varrefs = {};
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this.fnrefs = {};
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@ -394,7 +393,8 @@ export class BASICParser {
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pushbackToken(tok: Token) {
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this.tokens.unshift(tok);
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}
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parseOptLabel(line: BASICLine) {
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// this parses either a line number or "label:" -- or adds a default label to a line
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parseOptLabel() {
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let tok = this.consumeToken();
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switch (tok.type) {
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case TokenType.Ident:
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@ -410,8 +410,9 @@ export class BASICParser {
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} else
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this.dialectError(`Each line must begin with a line number`);
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case TokenType.Int:
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this.setCurrentLabel(line, tok.str);
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break;
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this.addLabel(tok.str);
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return;
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// label added, return from function... other cases add default label
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case TokenType.HexOctalInt:
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case TokenType.Float:
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this.compileError(`Line numbers must be positive integers.`);
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@ -429,30 +430,41 @@ export class BASICParser {
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case TokenType.Remark:
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break;
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}
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// add default label
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this.addLabel('#'+this.lineno);
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}
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setCurrentLabel(line: BASICLine, str: string) {
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if (this.labels[str] != null) this.compileError(`There's a duplicated label "${str}".`);
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this.labels[str] = line;
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line.label = str;
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getPC() : number {
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return this.stmts.length;
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}
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addStatement(stmt: Statement, cmdtok: Token, endtok?: Token) {
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// check IF/THEN WHILE/WEND FOR/NEXT etc
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this.modifyScope(stmt);
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// set location for statement
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if (endtok == null) endtok = this.peekToken();
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stmt.$loc = { path: cmdtok.$loc.path, line: cmdtok.$loc.line, start: cmdtok.$loc.start, end: endtok.$loc.start, label: this.curlabel, offset: null };
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this.stmts.push(stmt);
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}
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addLabel(str: string) {
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if (this.labels[str] != null) this.compileError(`There's a duplicated label named "${str}".`);
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this.labels[str] = this.getPC();
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this.curlabel = str;
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this.tokens.forEach((tok) => tok.$loc.label = str);
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}
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parseFile(file: string, path: string) : BASICProgram {
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this.path = path;
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var txtlines = file.split(/\n|\r\n?/);
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var pgmlines = txtlines.map((line) => this.parseLine(line));
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var program = { opts: this.opts, lines: pgmlines };
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txtlines.forEach((line) => this.parseLine(line));
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var program = { opts: this.opts, stmts: this.stmts, labels: this.labels };
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this.checkAll(program);
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this.listings[path] = this.generateListing(file, program);
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return program;
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}
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parseLine(line: string) : BASICLine {
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parseLine(line: string) : void {
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try {
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this.tokenize(line);
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return this.parse();
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this.parse();
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} catch (e) {
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if (!(e instanceof CompileError)) throw e; // ignore compile errors since errors[] list captures them
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return {label:null, stmts:[]};
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}
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}
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_tokenize(line: string) : void {
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@ -517,27 +529,25 @@ export class BASICParser {
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if (line.length > this.maxlinelen) this.compileError(`A line should be no more than ${this.maxlinelen} characters long.`);
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this._tokenize(line);
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}
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parse() : BASICLine {
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var line = {label: null, stmts: []};
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parse() : void {
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// not empty line?
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if (this.tokens.length) {
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this.parseOptLabel(line);
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this.parseOptLabel();
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if (this.tokens.length) {
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line.stmts = this.parseCompoundStatement();
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this.parseCompoundStatement();
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}
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var next = this.peekToken();
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if (!isEOS(next)) this.compileError(`Expected end of line or ':'`, next.$loc);
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this.curlabel = null;
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}
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return line;
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}
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parseCompoundStatement(): Statement[] {
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var list = this.parseList(this.parseStatement, ':');
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var next = this.peekToken();
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if (!isEOS(next))
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this.compileError(`Expected end of line or ':'`, next.$loc);
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if (next.str == 'ELSE')
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return list.concat(this.parseCompoundStatement());
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else
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return list;
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parseCompoundStatement() : void {
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if (this.opts.multipleStmtsPerLine) {
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this.parseList(this.parseStatement, ':');
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} else {
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this.parseList(this.parseStatement, '\0');
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if (this.peekToken().str == ':') this.dialectErrorNoSupport(`multiple statements on a line`);
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}
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}
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validKeyword(keyword: string) : string {
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return (this.opts.validKeywords && this.opts.validKeywords.indexOf(keyword) < 0) ? null : keyword;
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@ -578,7 +588,6 @@ export class BASICParser {
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if (this.validKeyword(cmd) == null)
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this.dialectErrorNoSupport(`the ${cmd} statement`);
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stmt = fn.bind(this)();
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this.modifyScope(stmt);
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break;
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} else if (this.peekToken().str == '=' || this.peekToken().str == '(') {
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if (!this.opts.optionalLet)
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@ -596,7 +605,8 @@ export class BASICParser {
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this.compileError(`There should be a command here.`);
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return null;
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}
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if (stmt) stmt.$loc = { path: cmdtok.$loc.path, line: cmdtok.$loc.line, start: cmdtok.$loc.start, end: this.peekToken().$loc.start, label: this.curlabel, offset: null };
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// add statement to list
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if (stmt != null) this.addStatement(stmt, cmdtok);
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return stmt;
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}
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// check scope stuff (if compiledBlocks is true)
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@ -898,30 +908,39 @@ export class BASICParser {
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return { command: cmd, label: expr };
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}
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}
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stmt__IF(): IF_Statement {
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stmt__IF(): void {
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var cmdtok = this.lasttoken;
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var cond = this.parseExpr();
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var iftrue: Statement[];
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var ifstmt = { command: "IF", cond: cond };
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this.addStatement(ifstmt, cmdtok);
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// we accept GOTO or THEN if line number provided (DEC accepts GO TO)
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var thengoto = this.expectTokens(['THEN','GOTO','GO']);
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if (thengoto.str == 'GO') this.expectToken('TO');
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// parse line number or statement clause
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this.parseGotoOrStatements();
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// is the next statement an ELSE?
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// gotta parse it now because it's an end-of-statement token
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if (this.peekToken().str == 'ELSE') {
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this.expectToken('ELSE');
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this.stmt__ELSE();
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}
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}
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stmt__ELSE(): void {
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this.addStatement({ command: "ELSE" }, this.lasttoken);
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// parse line number or statement clause
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this.parseGotoOrStatements();
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}
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parseGotoOrStatements() {
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var lineno = this.peekToken();
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// assume GOTO if number given after THEN
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if (lineno.type == TokenType.Int) {
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this.pushbackToken({type:TokenType.Ident, str:'GOTO', $loc:lineno.$loc});
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this.parseLabel();
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var gotostmt : GOTO_Statement = { command:'GOTO', label: {value:lineno.str} }
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this.addStatement(gotostmt, lineno);
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} else {
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// parse rest of IF clause
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this.parseCompoundStatement();
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}
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// add fake ":"
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this.pushbackToken({type:TokenType.Operator, str:':', $loc:lineno.$loc});
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return { command: "IF", cond: cond };
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}
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stmt__ELSE(): ELSE_Statement {
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var lineno = this.peekToken();
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// assume GOTO if number given after ELSE
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if (lineno.type == TokenType.Int) {
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this.pushbackToken({type:TokenType.Ident, str:'GOTO', $loc:lineno.$loc});
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}
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// add fake ":"
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this.pushbackToken({type:TokenType.Operator, str:':', $loc:lineno.$loc});
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return { command: "ELSE" };
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}
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stmt__FOR() : FOR_Statement {
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var lexpr = this.parseForNextLexpr();
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@ -1124,15 +1143,12 @@ export class BASICParser {
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// for workermain
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generateListing(file: string, program: BASICProgram) {
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var srclines = [];
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var pc = 0;
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var laststmt : Statement;
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program.lines.forEach((line, idx) => {
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line.stmts.forEach((stmt) => {
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laststmt = stmt;
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var sl = stmt.$loc;
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sl.offset = pc++; // TODO: could Statement have offset field?
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srclines.push(sl);
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});
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program.stmts.forEach((stmt, idx) => {
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laststmt = stmt;
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var sl = stmt.$loc;
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sl.offset = idx;
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srclines.push(sl);
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});
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if (this.opts.endStmtRequired && (laststmt == null || laststmt.command != 'END'))
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this.dialectError(`All programs must have a final END statement`);
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@ -1172,6 +1188,7 @@ export const ECMA55_MINIMAL : BASICOptions = {
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uppercaseOnly : true,
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optionalLabels : false,
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optionalWhitespace : false,
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multipleStmtsPerLine : false,
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varNaming : "A1",
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staticArrays : true,
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sharedArrayNamespace : true,
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@ -1220,6 +1237,7 @@ export const DARTMOUTH_4TH_EDITION : BASICOptions = {
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uppercaseOnly : true,
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optionalLabels : false,
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optionalWhitespace : false,
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multipleStmtsPerLine : false,
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varNaming : "A1",
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staticArrays : true,
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sharedArrayNamespace : false,
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@ -1271,6 +1289,7 @@ export const TINY_BASIC : BASICOptions = {
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uppercaseOnly : true,
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optionalLabels : false,
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optionalWhitespace : false,
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multipleStmtsPerLine : false,
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varNaming : "A",
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staticArrays : false,
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sharedArrayNamespace : true,
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@ -1317,6 +1336,7 @@ export const HP_TIMESHARED_BASIC : BASICOptions = {
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uppercaseOnly : false, // the terminal is usually uppercase
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optionalLabels : false,
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optionalWhitespace : false,
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multipleStmtsPerLine : true,
|
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varNaming : "A1",
|
||||
staticArrays : true,
|
||||
sharedArrayNamespace : false,
|
||||
@ -1370,6 +1390,7 @@ export const DEC_BASIC_11 : BASICOptions = {
|
||||
uppercaseOnly : true, // translates all lower to upper
|
||||
optionalLabels : false,
|
||||
optionalWhitespace : false,
|
||||
multipleStmtsPerLine : false, // actually "\"
|
||||
varNaming : "A1",
|
||||
staticArrays : true,
|
||||
sharedArrayNamespace : false,
|
||||
@ -1424,6 +1445,7 @@ export const DEC_BASIC_PLUS : BASICOptions = {
|
||||
uppercaseOnly : false,
|
||||
optionalLabels : false,
|
||||
optionalWhitespace : false,
|
||||
multipleStmtsPerLine : true,
|
||||
varNaming : "A1",
|
||||
staticArrays : true,
|
||||
sharedArrayNamespace : false,
|
||||
@ -1485,6 +1507,7 @@ export const BASICODE : BASICOptions = {
|
||||
uppercaseOnly : false,
|
||||
optionalLabels : false,
|
||||
optionalWhitespace : true,
|
||||
multipleStmtsPerLine : true,
|
||||
varNaming : "AA",
|
||||
staticArrays : true,
|
||||
sharedArrayNamespace : false,
|
||||
@ -1535,6 +1558,7 @@ export const ALTAIR_BASIC41 : BASICOptions = {
|
||||
uppercaseOnly : true,
|
||||
optionalLabels : false,
|
||||
optionalWhitespace : true,
|
||||
multipleStmtsPerLine : true,
|
||||
varNaming : "*", // or AA
|
||||
staticArrays : false,
|
||||
sharedArrayNamespace : true,
|
||||
@ -1593,6 +1617,7 @@ export const APPLESOFT_BASIC : BASICOptions = {
|
||||
uppercaseOnly : false,
|
||||
optionalLabels : false,
|
||||
optionalWhitespace : true,
|
||||
multipleStmtsPerLine : true,
|
||||
varNaming : "*", // or AA
|
||||
staticArrays : false,
|
||||
sharedArrayNamespace : false,
|
||||
@ -1652,6 +1677,7 @@ export const BASIC80 : BASICOptions = {
|
||||
uppercaseOnly : false,
|
||||
optionalLabels : false,
|
||||
optionalWhitespace : true,
|
||||
multipleStmtsPerLine : true,
|
||||
varNaming : "*",
|
||||
staticArrays : false,
|
||||
sharedArrayNamespace : true,
|
||||
@ -1712,6 +1738,7 @@ export const MODERN_BASIC : BASICOptions = {
|
||||
uppercaseOnly : false,
|
||||
optionalLabels : true,
|
||||
optionalWhitespace : false,
|
||||
multipleStmtsPerLine : true,
|
||||
varNaming : "*",
|
||||
staticArrays : false,
|
||||
sharedArrayNamespace : false,
|
||||
@ -1749,6 +1776,7 @@ export const MODERN_BASIC : BASICOptions = {
|
||||
// TODO: integer vars
|
||||
// TODO: DEFINT/DEFSTR
|
||||
// TODO: excess INPUT ignored, error msg
|
||||
// TODO: out of order line numbers
|
||||
|
||||
export const DIALECTS = {
|
||||
"DEFAULT": MODERN_BASIC,
|
||||
|
||||
@ -72,8 +72,6 @@ export class BASICRuntime {
|
||||
|
||||
program : basic.BASICProgram;
|
||||
allstmts : basic.Statement[];
|
||||
line2pc : number[];
|
||||
pc2line : Map<number,number>;
|
||||
pc2label : Map<number,string>;
|
||||
label2pc : {[label : string] : number};
|
||||
label2dataptr : {[label : string] : number};
|
||||
@ -103,7 +101,7 @@ export class BASICRuntime {
|
||||
let prevlabel = null;
|
||||
let prevpcofs = 0;
|
||||
if (this.pc2label != null) {
|
||||
var pc = this.curpc;
|
||||
let pc = this.curpc;
|
||||
while (pc > 0 && (prevlabel = this.pc2label.get(pc)) == null) {
|
||||
pc--;
|
||||
}
|
||||
@ -114,27 +112,18 @@ export class BASICRuntime {
|
||||
this.program = program;
|
||||
this.opts = program.opts;
|
||||
if (!this.opts.maxArrayElements) this.opts.maxArrayElements = DEFAULT_MAX_ARRAY_ELEMENTS;
|
||||
this.label2pc = {};
|
||||
this.allstmts = program.stmts;
|
||||
this.label2pc = program.labels;
|
||||
this.label2dataptr = {};
|
||||
this.allstmts = [];
|
||||
this.line2pc = [];
|
||||
this.pc2line = new Map();
|
||||
this.pc2label = new Map();
|
||||
this.datums = [];
|
||||
this.builtins = this.getBuiltinFunctions();
|
||||
// TODO: detect undeclared vars
|
||||
program.lines.forEach((line, idx) => {
|
||||
// make lookup tables
|
||||
var pc = this.allstmts.length;
|
||||
if (line.label != null) {
|
||||
this.label2pc[line.label] = pc;
|
||||
this.pc2label.set(pc, line.label);
|
||||
}
|
||||
this.line2pc.push(pc);
|
||||
this.pc2line.set(pc, idx);
|
||||
// combine all statements into single list
|
||||
line.stmts.forEach((stmt) => this.allstmts.push(stmt));
|
||||
});
|
||||
// build PC -> label lookup
|
||||
for (var label in program.labels) {
|
||||
var targetpc = program.labels[label];
|
||||
this.pc2label.set(targetpc, label);
|
||||
}
|
||||
// compile statements ahead of time
|
||||
this.allstmts.forEach((stmt, pc) => {
|
||||
this.curpc = pc + 1; // for error reporting
|
||||
@ -278,10 +267,11 @@ export class BASICRuntime {
|
||||
stmt.$run();
|
||||
}
|
||||
|
||||
// TODO: this only works because each line has a label
|
||||
skipToEOL() {
|
||||
do {
|
||||
this.curpc++;
|
||||
} while (this.curpc < this.allstmts.length && !this.pc2line.get(this.curpc));
|
||||
} while (this.curpc < this.allstmts.length && !this.pc2label.get(this.curpc));
|
||||
}
|
||||
|
||||
skipToElse() {
|
||||
@ -292,7 +282,7 @@ export class BASICRuntime {
|
||||
if (cmd == 'ELSE') { this.curpc++; break; }
|
||||
else if (cmd == 'IF') return this.skipToEOL();
|
||||
this.curpc++;
|
||||
if (this.pc2line.get(this.curpc))
|
||||
if (this.pc2label.get(this.curpc))
|
||||
break;
|
||||
}
|
||||
}
|
||||
@ -380,9 +370,10 @@ export class BASICRuntime {
|
||||
this.column = 0;
|
||||
str = obj;
|
||||
} else if (obj == '\t') {
|
||||
var curgroup = Math.floor(this.column / this.opts.printZoneLength);
|
||||
var l = this.opts.printZoneLength;
|
||||
var curgroup = Math.floor(this.column / l);
|
||||
var nextcol = (curgroup + 1) * this.opts.printZoneLength;
|
||||
if (nextcol >= this.margin) { this.column = 0; str = "\n"; } // return to left margin
|
||||
if (nextcol+l > this.margin) { this.column = 0; str = "\n"; } // return to left margin
|
||||
else str = this.TAB(nextcol); // next column
|
||||
} else {
|
||||
str = `${obj}`;
|
||||
|
||||
@ -8,7 +8,7 @@ import { BASICProgram } from "../common/basic/compiler";
|
||||
import { TeleTypeWithKeyboard } from "../common/teletype";
|
||||
|
||||
const BASIC_PRESETS = [
|
||||
{ id: 'hello.bas', name: 'Hello World' },
|
||||
{ id: 'hello.bas', name: 'Tutorial' },
|
||||
{ id: 'sieve.bas', name: 'Sieve Benchmark' },
|
||||
{ id: 'mortgage.bas', name: 'Interest Calculator' },
|
||||
{ id: '23match.bas', name: '23 Matches' },
|
||||
@ -27,7 +27,7 @@ class BASICPlatform implements Platform {
|
||||
clock: number = 0;
|
||||
timer: AnimationTimer;
|
||||
tty: TeleTypeWithKeyboard;
|
||||
hotReload: boolean = true;
|
||||
hotReload: boolean = false;
|
||||
animcount: number = 0;
|
||||
|
||||
constructor(mainElement: HTMLElement) {
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user