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-rw-r--r--src/parser/grammar.jison97
-rw-r--r--src/parser/grammar.jison.bak113
-rw-r--r--src/parser/grammar.js762
-rw-r--r--src/parser/test.red3
4 files changed, 954 insertions, 21 deletions
diff --git a/src/parser/grammar.jison b/src/parser/grammar.jison
index 4a17d2b..ae8793b 100644
--- a/src/parser/grammar.jison
+++ b/src/parser/grammar.jison
@@ -1,15 +1,18 @@
%lex
+%s comment
+
%%
-";" { this.pushState('comment'); return "COMMENT"; }
+<<EOF>> { return "EOF"; }
<comment>"\n" { this.popState(); return "NEWLINE"; }
<comment>. { /* ignore anything else inside a comment */ }
+";" { this.pushState('comment'); }
-"\n" { return "NEWLINE"; }
-\s+ { /* ignore whitespace */ }
+[\n] { console.log("new!"); return "NEWLINE"; }
+\s { /* ignore whitespace */ }
-"MOV" { return "MOV"; }
+"MOV" { console.log("mov"); return "MOV"; }
"ADD" { return "ADD"; }
"SUB" { return "SUB"; }
"CMP" { return "CMP"; }
@@ -24,6 +27,7 @@
"EQU" { return "EQU"; }
"END" { return "END"; }
":" { return ":"; }
+"," { return ","; }
"#" { return "#"; }
"@" { return "@"; }
@@ -41,28 +45,73 @@
/lex
-%%
+%left '+' '-'
+%left '*' '/'
+%left UMINUS
+%%
program
- : lines { return $lines; }
+ : lines NEWLINE END coda { yy.start = 0; return $lines; }
+ | lines NEWLINE END label coda { yy.start = yy.getLabel($label); return $lines; }
;
+coda
+ : newlines EOF
+ | EOF
+ ;
+
+newlines
+ : newlines NEWLINE
+ | NEWLINE
+ ;
lines
- : lines line { $lines.push($line); $$ = $lines; }
- | line { $$ = [ $line ]; }
+ : lines line
+ {
+ if ($line !== null) {
+ $lines.push($line);
+ }
+ $$ = $lines;
+ }
+ | line
+ {
+ if ($line === null) {
+ $$ = [];
+ } else {
+ $$ = [ $line ];
+ }
+ }
;
line
- : op NEWLINE { $$ = $op; }
- | op EOF { $$ = $op; }
+ : row NEWLINE { $$ = $row; }
+ | NEWLINE { $$ = null; }
+ ;
+
+row
+ : op
+ {
+ yy.pc += 1;
+ $$ = $op;
+ }
+ | label ":" op
+ {
+ yy.setLabel($label, yy.pc);
+ yy.pc += 1;
+ $$ = $op;
+ }
+ | label EQU e
+ {
+ yy.setLabel($label, $e);
+ $$ = null;
+ }
;
op
- : opcode address address
+ : opcode address "," address
{ $$ = { opcode: $opcode, a: $address1, b: $address2 }; }
;
@@ -82,7 +131,7 @@ opcode
;
-address:
+address
: address_mode e { $$ = { mode: $1, value: $2 }; }
| e { $$ = { mode: 'direct', value: $1 }; }
;
@@ -90,22 +139,28 @@ address:
address_mode
: "#" { $$ = 'immediate'; }
- | "@" { $$ = 'indirect'; }
+ | "@" { $$ = 'indirect'; }
| "<" { $$ = 'predecrement'; }
| "$" { $$ = 'direct'; }
;
+
e
- : NUMBER { $$ = Math.floor(Number(yytext)); }
- | LABEL {
- $$ = yy.getLabel(yytext);
- if ($$ === null) {
- YYABORT;
- }
- }
- | e '+' e { $$ = Math.floor($e1 + $e2); }
+ : e '+' e { $$ = Math.floor($e1 + $e2); }
| e '-' e { $$ = Math.floor($e1 - $e2); }
| e '*' e { $$ = Math.floor($e1 * $e2); }
| e '/' e { $$ = Math.floor($e1 / $e2); }
| '(' e ')' { $$ = Math.floor($e); }
+ | '-' e %prec UMINUS { $$ = - $e; }
+ | NUMBER { $$ = Math.floor(Number(yytext)); }
+ | label {
+ $$ = yy.getLabel($label);
+ }
+ ;
+
+
+label
+ : LABEL { $$ = yytext; }
;
+
+
diff --git a/src/parser/grammar.jison.bak b/src/parser/grammar.jison.bak
new file mode 100644
index 0000000..6ac55df
--- /dev/null
+++ b/src/parser/grammar.jison.bak
@@ -0,0 +1,113 @@
+%lex
+
+%x comment
+
+%%
+
+";" { this.pushState('comment'); return "COMMENT"; }
+<comment>"\n" { this.popState(); return "NEWLINE"; }
+<comment>. { /* ignore anything else inside a comment */ }
+
+"\n" { return "NEWLINE"; }
+\s+ { /* ignore whitespace */ }
+
+"MOV" { return "MOV"; }
+"ADD" { return "ADD"; }
+"SUB" { return "SUB"; }
+"CMP" { return "CMP"; }
+"SLT" { return "SLT"; }
+"JMP" { return "JMP"; }
+"JMZ" { return "JMZ"; }
+"JMN" { return "JMN"; }
+"DJN" { return "DJN"; }
+"SPL" { return "SPL"; }
+"DAT" { return "DAT"; }
+
+"EQU" { return "EQU"; }
+"END" { return "END"; }
+":" { return ":"; }
+
+"#" { return "#"; }
+"@" { return "@"; }
+"<" { return "<"; }
+"$" { return "$"; }
+
+"(" { return "("; }
+")" { return ")"; }
+"+" { return "+"; }
+"-" { return "-"; }
+"*" { return "*"; }
+"/" { return "/"; }
+[0-9]+ { return "NUMBER"; }
+[A-Z][A-Z0-9_]+ { return "LABEL"; }
+
+/lex
+
+%%
+
+
+program
+ : lines { return $lines; }
+ ;
+
+
+
+lines
+ : lines line { $lines.push($line); $$ = $lines; }
+ | line { $$ = [ $line ]; }
+ ;
+
+line
+ : op NEWLINE { $$ = $op; }
+ | op EOF { $$ = $op; }
+ ;
+
+
+op
+ : opcode address address
+ { $$ = { opcode: $opcode, a: $address1, b: $address2 }; }
+ ;
+
+
+opcode
+ : MOV { $$ = $1; }
+ | ADD { $$ = $1; }
+ | SUB { $$ = $1; }
+ | CMP { $$ = $1; }
+ | SLT { $$ = $1; }
+ | JMP { $$ = $1; }
+ | JMZ { $$ = $1; }
+ | JMN { $$ = $1; }
+ | DJN { $$ = $1; }
+ | SPL { $$ = $1; }
+ | DAT { $$ = $1; }
+ ;
+
+
+address:
+ : address_mode e { $$ = { mode: $1, value: $2 }; }
+ | e { $$ = { mode: 'direct', value: $1 }; }
+ ;
+
+
+address_mode
+ : "#" { $$ = 'immediate'; }
+ | "@" { $$ = 'indirect'; }
+ | "<" { $$ = 'predecrement'; }
+ | "$" { $$ = 'direct'; }
+ ;
+
+e
+ : NUMBER { $$ = Math.floor(Number(yytext)); }
+ | LABEL {
+ $$ = yy.getLabel(yytext);
+ if ($$ === null) {
+ YYABORT;
+ }
+ }
+ | e '+' e { $$ = Math.floor($e1 + $e2); }
+ | e '-' e { $$ = Math.floor($e1 - $e2); }
+ | e '*' e { $$ = Math.floor($e1 * $e2); }
+ | e '/' e { $$ = Math.floor($e1 / $e2); }
+ | '(' e ')' { $$ = Math.floor($e); }
+ ;
diff --git a/src/parser/grammar.js b/src/parser/grammar.js
new file mode 100644
index 0000000..73505c3
--- /dev/null
+++ b/src/parser/grammar.js
@@ -0,0 +1,762 @@
+/* parser generated by jison 0.4.18 */
+/*
+ Returns a Parser object of the following structure:
+
+ Parser: {
+ yy: {}
+ }
+
+ Parser.prototype: {
+ yy: {},
+ trace: function(),
+ symbols_: {associative list: name ==> number},
+ terminals_: {associative list: number ==> name},
+ productions_: [...],
+ performAction: function anonymous(yytext, yyleng, yylineno, yy, yystate, $$, _$),
+ table: [...],
+ defaultActions: {...},
+ parseError: function(str, hash),
+ parse: function(input),
+
+ lexer: {
+ EOF: 1,
+ parseError: function(str, hash),
+ setInput: function(input),
+ input: function(),
+ unput: function(str),
+ more: function(),
+ less: function(n),
+ pastInput: function(),
+ upcomingInput: function(),
+ showPosition: function(),
+ test_match: function(regex_match_array, rule_index),
+ next: function(),
+ lex: function(),
+ begin: function(condition),
+ popState: function(),
+ _currentRules: function(),
+ topState: function(),
+ pushState: function(condition),
+
+ options: {
+ ranges: boolean (optional: true ==> token location info will include a .range[] member)
+ flex: boolean (optional: true ==> flex-like lexing behaviour where the rules are tested exhaustively to find the longest match)
+ backtrack_lexer: boolean (optional: true ==> lexer regexes are tested in order and for each matching regex the action code is invoked; the lexer terminates the scan when a token is returned by the action code)
+ },
+
+ performAction: function(yy, yy_, $avoiding_name_collisions, YY_START),
+ rules: [...],
+ conditions: {associative list: name ==> set},
+ }
+ }
+
+
+ token location info (@$, _$, etc.): {
+ first_line: n,
+ last_line: n,
+ first_column: n,
+ last_column: n,
+ range: [start_number, end_number] (where the numbers are indexes into the input string, regular zero-based)
+ }
+
+
+ the parseError function receives a 'hash' object with these members for lexer and parser errors: {
+ text: (matched text)
+ token: (the produced terminal token, if any)
+ line: (yylineno)
+ }
+ while parser (grammar) errors will also provide these members, i.e. parser errors deliver a superset of attributes: {
+ loc: (yylloc)
+ expected: (string describing the set of expected tokens)
+ recoverable: (boolean: TRUE when the parser has a error recovery rule available for this particular error)
+ }
+*/
+var grammar = (function(){
+var o=function(k,v,o,l){for(o=o||{},l=k.length;l--;o[k[l]]=v);return o},$V0=[1,10],$V1=[1,11],$V2=[1,12],$V3=[1,13],$V4=[1,14],$V5=[1,15],$V6=[1,16],$V7=[1,17],$V8=[1,18],$V9=[1,19],$Va=[1,20],$Vb=[1,9],$Vc=[5,20,21,22,23,24,25,26,27,28,29,30,43],$Vd=[2,10],$Ve=[1,29],$Vf=[1,30],$Vg=[1,31],$Vh=[1,32],$Vi=[1,34],$Vj=[1,33],$Vk=[1,35],$Vl=[32,33,34,35,37,40,42,43],$Vm=[5,19],$Vn=[1,42],$Vo=[1,43],$Vp=[1,44],$Vq=[1,45],$Vr=[37,40,42,43],$Vs=[5,19,36,37,38,39,41],$Vt=[1,52],$Vu=[1,51],$Vv=[5,10],$Vw=[5,19,36,37,41];
+var parser = {trace: function trace () { },
+yy: {},
+symbols_: {"error":2,"program":3,"lines":4,"NEWLINE":5,"END":6,"coda":7,"label":8,"newlines":9,"EOF":10,"line":11,"row":12,"op":13,":":14,"EQU":15,"e":16,"opcode":17,"address":18,",":19,"MOV":20,"ADD":21,"SUB":22,"CMP":23,"SLT":24,"JMP":25,"JMZ":26,"JMN":27,"DJN":28,"SPL":29,"DAT":30,"address_mode":31,"#":32,"@":33,"<":34,"$":35,"+":36,"-":37,"*":38,"/":39,"(":40,")":41,"NUMBER":42,"LABEL":43,"$accept":0,"$end":1},
+terminals_: {2:"error",5:"NEWLINE",6:"END",10:"EOF",14:":",15:"EQU",19:",",20:"MOV",21:"ADD",22:"SUB",23:"CMP",24:"SLT",25:"JMP",26:"JMZ",27:"JMN",28:"DJN",29:"SPL",30:"DAT",32:"#",33:"@",34:"<",35:"$",36:"+",37:"-",38:"*",39:"/",40:"(",41:")",42:"NUMBER",43:"LABEL"},
+productions_: [0,[3,4],[3,5],[7,2],[7,1],[9,2],[9,1],[4,2],[4,1],[11,2],[11,1],[12,1],[12,3],[12,3],[13,4],[17,1],[17,1],[17,1],[17,1],[17,1],[17,1],[17,1],[17,1],[17,1],[17,1],[17,1],[18,2],[18,1],[31,1],[31,1],[31,1],[31,1],[16,3],[16,3],[16,3],[16,3],[16,3],[16,2],[16,1],[16,1],[8,1]],
+performAction: function anonymous(yytext, yyleng, yylineno, yy, yystate /* action[1] */, $$ /* vstack */, _$ /* lstack */) {
+/* this == yyval */
+
+var $0 = $$.length - 1;
+switch (yystate) {
+case 1:
+ yy.start = 0; return $$[$0-3];
+break;
+case 2:
+ yy.start = yy.getLabel($$[$0-1]); return $$[$0-4];
+break;
+case 7:
+
+ if ($$[$0] !== null) {
+ $$[$0-1].push($$[$0]);
+ }
+ this.$ = $$[$0-1];
+
+break;
+case 8:
+
+ if ($$[$0] === null) {
+ this.$ = [];
+ } else {
+ this.$ = [ $$[$0] ];
+ }
+
+break;
+case 9:
+ this.$ = $$[$0-1];
+break;
+case 10:
+ this.$ = null;
+break;
+case 11:
+
+ yy.pc += 1;
+ this.$ = $$[$0];
+
+break;
+case 12:
+
+ yy.setLabel($$[$0-2], yy.pc);
+ yy.pc += 1;
+ this.$ = $$[$0];
+
+break;
+case 13:
+
+ yy.setLabel($$[$0-2], $$[$0]);
+ this.$ = null;
+
+break;
+case 14:
+ this.$ = { opcode: $$[$0-3], a: $$[$0-2], b: $$[$0] };
+break;
+case 15: case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23: case 24: case 25:
+ this.$ = $$[$0];
+break;
+case 26:
+ this.$ = { mode: $$[$0-1], value: $$[$0] };
+break;
+case 27:
+ this.$ = { mode: 'direct', value: $$[$0] };
+break;
+case 28:
+ this.$ = 'immediate';
+break;
+case 29:
+ this.$ = 'indirect';
+break;
+case 30:
+ this.$ = 'predecrement';
+break;
+case 31:
+ this.$ = 'direct';
+break;
+case 32:
+ this.$ = Math.floor($$[$0-2] + $$[$0]);
+break;
+case 33:
+ this.$ = Math.floor($$[$0-2] - $$[$0]);
+break;
+case 34:
+ this.$ = Math.floor($$[$0-2] * $$[$0]);
+break;
+case 35:
+ this.$ = Math.floor($$[$0-2] / $$[$0]);
+break;
+case 36:
+ this.$ = Math.floor($$[$0-1]);
+break;
+case 37:
+ this.$ = - $$[$0];
+break;
+case 38:
+ this.$ = Math.floor(Number(yytext));
+break;
+case 39:
+
+ this.$ = yy.getLabel($$[$0]);
+
+break;
+case 40:
+ this.$ = yytext;
+break;
+}
+},
+table: [{3:1,4:2,5:[1,5],8:7,11:3,12:4,13:6,17:8,20:$V0,21:$V1,22:$V2,23:$V3,24:$V4,25:$V5,26:$V6,27:$V7,28:$V8,29:$V9,30:$Va,43:$Vb},{1:[3]},{5:[1,21],8:7,11:22,12:4,13:6,17:8,20:$V0,21:$V1,22:$V2,23:$V3,24:$V4,25:$V5,26:$V6,27:$V7,28:$V8,29:$V9,30:$Va,43:$Vb},o($Vc,[2,8]),{5:[1,23]},o($Vc,$Vd),{5:[2,11]},{14:[1,24],15:[1,25]},{8:36,16:28,18:26,31:27,32:$Ve,33:$Vf,34:$Vg,35:$Vh,37:$Vi,40:$Vj,42:$Vk,43:$Vb},o([5,10,14,15,19,36,37,38,39,41],[2,40]),o($Vl,[2,15]),o($Vl,[2,16]),o($Vl,[2,17]),o($Vl,[2,18]),o($Vl,[2,19]),o($Vl,[2,20]),o($Vl,[2,21]),o($Vl,[2,22]),o($Vl,[2,23]),o($Vl,[2,24]),o($Vl,[2,25]),o($Vc,$Vd,{6:[1,37]}),o($Vc,[2,7]),o($Vc,[2,9]),{13:38,17:8,20:$V0,21:$V1,22:$V2,23:$V3,24:$V4,25:$V5,26:$V6,27:$V7,28:$V8,29:$V9,30:$Va},{8:36,16:39,37:$Vi,40:$Vj,42:$Vk,43:$Vb},{19:[1,40]},{8:36,16:41,37:$Vi,40:$Vj,42:$Vk,43:$Vb},o($Vm,[2,27],{36:$Vn,37:$Vo,38:$Vp,39:$Vq}),o($Vr,[2,28]),o($Vr,[2,29]),o($Vr,[2,30]),o($Vr,[2,31]),{8:36,16:46,37:$Vi,40:$Vj,42:$Vk,43:$Vb},{8:36,16:47,37:$Vi,40:$Vj,42:$Vk,43:$Vb},o($Vs,[2,38]),o($Vs,[2,39]),{5:$Vt,7:48,8:49,9:50,10:$Vu,43:$Vb},{5:[2,12]},{5:[2,13],36:$Vn,37:$Vo,38:$Vp,39:$Vq},{8:36,16:28,18:53,31:27,32:$Ve,33:$Vf,34:$Vg,35:$Vh,37:$Vi,40:$Vj,42:$Vk,43:$Vb},o($Vm,[2,26],{36:$Vn,37:$Vo,38:$Vp,39:$Vq}),{8:36,16:54,37:$Vi,40:$Vj,42:$Vk,43:$Vb},{8:36,16:55,37:$Vi,40:$Vj,42:$Vk,43:$Vb},{8:36,16:56,37:$Vi,40:$Vj,42:$Vk,43:$Vb},{8:36,16:57,37:$Vi,40:$Vj,42:$Vk,43:$Vb},{36:$Vn,37:$Vo,38:$Vp,39:$Vq,41:[1,58]},o($Vs,[2,37]),{1:[2,1]},{5:$Vt,7:59,9:50,10:$Vu},{5:[1,61],10:[1,60]},{1:[2,4]},o($Vv,[2,6]),{5:[2,14]},o($Vw,[2,32],{38:$Vp,39:$Vq}),o($Vw,[2,33],{38:$Vp,39:$Vq}),o($Vs,[2,34]),o($Vs,[2,35]),o($Vs,[2,36]),{1:[2,2]},{1:[2,3]},o($Vv,[2,5])],
+defaultActions: {6:[2,11],38:[2,12],48:[2,1],51:[2,4],53:[2,14],59:[2,2],60:[2,3]},
+parseError: function parseError (str, hash) {
+ if (hash.recoverable) {
+ this.trace(str);
+ } else {
+ var error = new Error(str);
+ error.hash = hash;
+ throw error;
+ }
+},
+parse: function parse(input) {
+ var self = this, stack = [0], tstack = [], vstack = [null], lstack = [], table = this.table, yytext = '', yylineno = 0, yyleng = 0, recovering = 0, TERROR = 2, EOF = 1;
+ var args = lstack.slice.call(arguments, 1);
+ var lexer = Object.create(this.lexer);
+ var sharedState = { yy: {} };
+ for (var k in this.yy) {
+ if (Object.prototype.hasOwnProperty.call(this.yy, k)) {
+ sharedState.yy[k] = this.yy[k];
+ }
+ }
+ lexer.setInput(input, sharedState.yy);
+ sharedState.yy.lexer = lexer;
+ sharedState.yy.parser = this;
+ if (typeof lexer.yylloc == 'undefined') {
+ lexer.yylloc = {};
+ }
+ var yyloc = lexer.yylloc;
+ lstack.push(yyloc);
+ var ranges = lexer.options && lexer.options.ranges;
+ if (typeof sharedState.yy.parseError === 'function') {
+ this.parseError = sharedState.yy.parseError;
+ } else {
+ this.parseError = Object.getPrototypeOf(this).parseError;
+ }
+ function popStack(n) {
+ stack.length = stack.length - 2 * n;
+ vstack.length = vstack.length - n;
+ lstack.length = lstack.length - n;
+ }
+ _token_stack:
+ var lex = function () {
+ var token;
+ token = lexer.lex() || EOF;
+ if (typeof token !== 'number') {
+ token = self.symbols_[token] || token;
+ }
+ return token;
+ };
+ var symbol, preErrorSymbol, state, action, a, r, yyval = {}, p, len, newState, expected;
+ while (true) {
+ state = stack[stack.length - 1];
+ if (this.defaultActions[state]) {
+ action = this.defaultActions[state];
+ } else {
+ if (symbol === null || typeof symbol == 'undefined') {
+ symbol = lex();
+ }
+ action = table[state] && table[state][symbol];
+ }
+ if (typeof action === 'undefined' || !action.length || !action[0]) {
+ var errStr = '';
+ expected = [];
+ for (p in table[state]) {
+ if (this.terminals_[p] && p > TERROR) {
+ expected.push('\'' + this.terminals_[p] + '\'');
+ }
+ }
+ if (lexer.showPosition) {
+ errStr = 'Parse error on line ' + (yylineno + 1) + ':\n' + lexer.showPosition() + '\nExpecting ' + expected.join(', ') + ', got \'' + (this.terminals_[symbol] || symbol) + '\'';
+ } else {
+ errStr = 'Parse error on line ' + (yylineno + 1) + ': Unexpected ' + (symbol == EOF ? 'end of input' : '\'' + (this.terminals_[symbol] || symbol) + '\'');
+ }
+ this.parseError(errStr, {
+ text: lexer.match,
+ token: this.terminals_[symbol] || symbol,
+ line: lexer.yylineno,
+ loc: yyloc,
+ expected: expected
+ });
+ }
+ if (action[0] instanceof Array && action.length > 1) {
+ throw new Error('Parse Error: multiple actions possible at state: ' + state + ', token: ' + symbol);
+ }
+ switch (action[0]) {
+ case 1:
+ stack.push(symbol);
+ vstack.push(lexer.yytext);
+ lstack.push(lexer.yylloc);
+ stack.push(action[1]);
+ symbol = null;
+ if (!preErrorSymbol) {
+ yyleng = lexer.yyleng;
+ yytext = lexer.yytext;
+ yylineno = lexer.yylineno;
+ yyloc = lexer.yylloc;
+ if (recovering > 0) {
+ recovering--;
+ }
+ } else {
+ symbol = preErrorSymbol;
+ preErrorSymbol = null;
+ }
+ break;
+ case 2:
+ len = this.productions_[action[1]][1];
+ yyval.$ = vstack[vstack.length - len];
+ yyval._$ = {
+ first_line: lstack[lstack.length - (len || 1)].first_line,
+ last_line: lstack[lstack.length - 1].last_line,
+ first_column: lstack[lstack.length - (len || 1)].first_column,
+ last_column: lstack[lstack.length - 1].last_column
+ };
+ if (ranges) {
+ yyval._$.range = [
+ lstack[lstack.length - (len || 1)].range[0],
+ lstack[lstack.length - 1].range[1]
+ ];
+ }
+ r = this.performAction.apply(yyval, [
+ yytext,
+ yyleng,
+ yylineno,
+ sharedState.yy,
+ action[1],
+ vstack,
+ lstack
+ ].concat(args));
+ if (typeof r !== 'undefined') {
+ return r;
+ }
+ if (len) {
+ stack = stack.slice(0, -1 * len * 2);
+ vstack = vstack.slice(0, -1 * len);
+ lstack = lstack.slice(0, -1 * len);
+ }
+ stack.push(this.productions_[action[1]][0]);
+ vstack.push(yyval.$);
+ lstack.push(yyval._$);
+ newState = table[stack[stack.length - 2]][stack[stack.length - 1]];
+ stack.push(newState);
+ break;
+ case 3:
+ return true;
+ }
+ }
+ return true;
+}};
+/* generated by jison-lex 0.3.4 */
+var lexer = (function(){
+var lexer = ({
+
+EOF:1,
+
+parseError:function parseError(str, hash) {
+ if (this.yy.parser) {
+ this.yy.parser.parseError(str, hash);
+ } else {
+ throw new Error(str);
+ }
+ },
+
+// resets the lexer, sets new input
+setInput:function (input, yy) {
+ this.yy = yy || this.yy || {};
+ this._input = input;
+ this._more = this._backtrack = this.done = false;
+ this.yylineno = this.yyleng = 0;
+ this.yytext = this.matched = this.match = '';
+ this.conditionStack = ['INITIAL'];
+ this.yylloc = {
+ first_line: 1,
+ first_column: 0,
+ last_line: 1,
+ last_column: 0
+ };
+ if (this.options.ranges) {
+ this.yylloc.range = [0,0];
+ }
+ this.offset = 0;
+ return this;
+ },
+
+// consumes and returns one char from the input
+input:function () {
+ var ch = this._input[0];
+ this.yytext += ch;
+ this.yyleng++;
+ this.offset++;
+ this.match += ch;
+ this.matched += ch;
+ var lines = ch.match(/(?:\r\n?|\n).*/g);
+ if (lines) {
+ this.yylineno++;
+ this.yylloc.last_line++;
+ } else {
+ this.yylloc.last_column++;
+ }
+ if (this.options.ranges) {
+ this.yylloc.range[1]++;
+ }
+
+ this._input = this._input.slice(1);
+ return ch;
+ },
+
+// unshifts one char (or a string) into the input
+unput:function (ch) {
+ var len = ch.length;
+ var lines = ch.split(/(?:\r\n?|\n)/g);
+
+ this._input = ch + this._input;
+ this.yytext = this.yytext.substr(0, this.yytext.length - len);
+ //this.yyleng -= len;
+ this.offset -= len;
+ var oldLines = this.match.split(/(?:\r\n?|\n)/g);
+ this.match = this.match.substr(0, this.match.length - 1);
+ this.matched = this.matched.substr(0, this.matched.length - 1);
+
+ if (lines.length - 1) {
+ this.yylineno -= lines.length - 1;
+ }
+ var r = this.yylloc.range;
+
+ this.yylloc = {
+ first_line: this.yylloc.first_line,
+ last_line: this.yylineno + 1,
+ first_column: this.yylloc.first_column,
+ last_column: lines ?
+ (lines.length === oldLines.length ? this.yylloc.first_column : 0)
+ + oldLines[oldLines.length - lines.length].length - lines[0].length :
+ this.yylloc.first_column - len
+ };
+
+ if (this.options.ranges) {
+ this.yylloc.range = [r[0], r[0] + this.yyleng - len];
+ }
+ this.yyleng = this.yytext.length;
+ return this;
+ },
+
+// When called from action, caches matched text and appends it on next action
+more:function () {
+ this._more = true;
+ return this;
+ },
+
+// When called from action, signals the lexer that this rule fails to match the input, so the next matching rule (regex) should be tested instead.
+reject:function () {
+ if (this.options.backtrack_lexer) {
+ this._backtrack = true;
+ } else {
+ return this.parseError('Lexical error on line ' + (this.yylineno + 1) + '. You can only invoke reject() in the lexer when the lexer is of the backtracking persuasion (options.backtrack_lexer = true).\n' + this.showPosition(), {
+ text: "",
+ token: null,
+ line: this.yylineno
+ });
+
+ }
+ return this;
+ },
+
+// retain first n characters of the match
+less:function (n) {
+ this.unput(this.match.slice(n));
+ },
+
+// displays already matched input, i.e. for error messages
+pastInput:function () {
+ var past = this.matched.substr(0, this.matched.length - this.match.length);
+ return (past.length > 20 ? '...':'') + past.substr(-20).replace(/\n/g, "");
+ },
+
+// displays upcoming input, i.e. for error messages
+upcomingInput:function () {
+ var next = this.match;
+ if (next.length < 20) {
+ next += this._input.substr(0, 20-next.length);
+ }
+ return (next.substr(0,20) + (next.length > 20 ? '...' : '')).replace(/\n/g, "");
+ },
+
+// displays the character position where the lexing error occurred, i.e. for error messages
+showPosition:function () {
+ var pre = this.pastInput();
+ var c = new Array(pre.length + 1).join("-");
+ return pre + this.upcomingInput() + "\n" + c + "^";
+ },
+
+// test the lexed token: return FALSE when not a match, otherwise return token
+test_match:function(match, indexed_rule) {
+ var token,
+ lines,
+ backup;
+
+ if (this.options.backtrack_lexer) {
+ // save context
+ backup = {
+ yylineno: this.yylineno,
+ yylloc: {
+ first_line: this.yylloc.first_line,
+ last_line: this.last_line,
+ first_column: this.yylloc.first_column,
+ last_column: this.yylloc.last_column
+ },
+ yytext: this.yytext,
+ match: this.match,
+ matches: this.matches,
+ matched: this.matched,
+ yyleng: this.yyleng,
+ offset: this.offset,
+ _more: this._more,
+ _input: this._input,
+ yy: this.yy,
+ conditionStack: this.conditionStack.slice(0),
+ done: this.done
+ };
+ if (this.options.ranges) {
+ backup.yylloc.range = this.yylloc.range.slice(0);
+ }
+ }
+
+ lines = match[0].match(/(?:\r\n?|\n).*/g);
+ if (lines) {
+ this.yylineno += lines.length;
+ }
+ this.yylloc = {
+ first_line: this.yylloc.last_line,
+ last_line: this.yylineno + 1,
+ first_column: this.yylloc.last_column,
+ last_column: lines ?
+ lines[lines.length - 1].length - lines[lines.length - 1].match(/\r?\n?/)[0].length :
+ this.yylloc.last_column + match[0].length
+ };
+ this.yytext += match[0];
+ this.match += match[0];
+ this.matches = match;
+ this.yyleng = this.yytext.length;
+ if (this.options.ranges) {
+ this.yylloc.range = [this.offset, this.offset += this.yyleng];
+ }
+ this._more = false;
+ this._backtrack = false;
+ this._input = this._input.slice(match[0].length);
+ this.matched += match[0];
+ token = this.performAction.call(this, this.yy, this, indexed_rule, this.conditionStack[this.conditionStack.length - 1]);
+ if (this.done && this._input) {
+ this.done = false;
+ }
+ if (token) {
+ return token;
+ } else if (this._backtrack) {
+ // recover context
+ for (var k in backup) {
+ this[k] = backup[k];
+ }
+ return false; // rule action called reject() implying the next rule should be tested instead.
+ }
+ return false;
+ },
+
+// return next match in input
+next:function () {
+ if (this.done) {
+ return this.EOF;
+ }
+ if (!this._input) {
+ this.done = true;
+ }
+
+ var token,
+ match,
+ tempMatch,
+ index;
+ if (!this._more) {
+ this.yytext = '';
+ this.match = '';
+ }
+ var rules = this._currentRules();
+ for (var i = 0; i < rules.length; i++) {
+ tempMatch = this._input.match(this.rules[rules[i]]);
+ if (tempMatch && (!match || tempMatch[0].length > match[0].length)) {
+ match = tempMatch;
+ index = i;
+ if (this.options.backtrack_lexer) {
+ token = this.test_match(tempMatch, rules[i]);
+ if (token !== false) {
+ return token;
+ } else if (this._backtrack) {
+ match = false;
+ continue; // rule action called reject() implying a rule MISmatch.
+ } else {
+ // else: this is a lexer rule which consumes input without producing a token (e.g. whitespace)
+ return false;
+ }
+ } else if (!this.options.flex) {
+ break;
+ }
+ }
+ }
+ if (match) {
+ token = this.test_match(match, rules[index]);
+ if (token !== false) {
+ return token;
+ }
+ // else: this is a lexer rule which consumes input without producing a token (e.g. whitespace)
+ return false;
+ }
+ if (this._input === "") {
+ return this.EOF;
+ } else {
+ return this.parseError('Lexical error on line ' + (this.yylineno + 1) + '. Unrecognized text.\n' + this.showPosition(), {
+ text: "",
+ token: null,
+ line: this.yylineno
+ });
+ }
+ },
+
+// return next match that has a token
+lex:function lex () {
+ var r = this.next();
+ if (r) {
+ return r;
+ } else {
+ return this.lex();
+ }
+ },
+
+// activates a new lexer condition state (pushes the new lexer condition state onto the condition stack)
+begin:function begin (condition) {
+ this.conditionStack.push(condition);
+ },
+
+// pop the previously active lexer condition state off the condition stack
+popState:function popState () {
+ var n = this.conditionStack.length - 1;
+ if (n > 0) {
+ return this.conditionStack.pop();
+ } else {
+ return this.conditionStack[0];
+ }
+ },
+
+// produce the lexer rule set which is active for the currently active lexer condition state
+_currentRules:function _currentRules () {
+ if (this.conditionStack.length && this.conditionStack[this.conditionStack.length - 1]) {
+ return this.conditions[this.conditionStack[this.conditionStack.length - 1]].rules;
+ } else {
+ return this.conditions["INITIAL"].rules;
+ }
+ },
+
+// return the currently active lexer condition state; when an index argument is provided it produces the N-th previous condition state, if available
+topState:function topState (n) {
+ n = this.conditionStack.length - 1 - Math.abs(n || 0);
+ if (n >= 0) {
+ return this.conditionStack[n];
+ } else {
+ return "INITIAL";
+ }
+ },
+
+// alias for begin(condition)
+pushState:function pushState (condition) {
+ this.begin(condition);
+ },
+
+// return the number of states currently on the stack
+stateStackSize:function stateStackSize() {
+ return this.conditionStack.length;
+ },
+options: {},
+performAction: function anonymous(yy,yy_,$avoiding_name_collisions,YY_START) {
+var YYSTATE=YY_START;
+switch($avoiding_name_collisions) {
+case 0: return "EOF";
+break;
+case 1: this.popState(); return "NEWLINE";
+break;
+case 2: /* ignore anything else inside a comment */
+break;
+case 3: this.pushState('comment');
+break;
+case 4: console.log("new!"); return "NEWLINE";
+break;
+case 5: /* ignore whitespace */
+break;
+case 6: console.log("mov"); return "MOV";
+break;
+case 7: return "ADD";
+break;
+case 8: return "SUB";
+break;
+case 9: return "CMP";
+break;
+case 10: return "SLT";
+break;
+case 11: return "JMP";
+break;
+case 12: return "JMZ";
+break;
+case 13: return "JMN";
+break;
+case 14: return "DJN";
+break;
+case 15: return "SPL";
+break;
+case 16: return "DAT";
+break;
+case 17: return "EQU";
+break;
+case 18: return "END";
+break;
+case 19: return ":";
+break;
+case 20: return ",";
+break;
+case 21: return "#";
+break;
+case 22: return "@";
+break;
+case 23: return "<";
+break;
+case 24: return "$";
+break;
+case 25: return "(";
+break;
+case 26: return ")";
+break;
+case 27: return "+";
+break;
+case 28: return "-";
+break;
+case 29: return "*";
+break;
+case 30: return "/";
+break;
+case 31: return "NUMBER";
+break;
+case 32: return "LABEL";
+break;
+}
+},
+rules: [/^(?:$)/,/^(?:\\n)/,/^(?:.)/,/^(?:;)/,/^(?:[\n])/,/^(?:\s)/,/^(?:MOV\b)/,/^(?:ADD\b)/,/^(?:SUB\b)/,/^(?:CMP\b)/,/^(?:SLT\b)/,/^(?:JMP\b)/,/^(?:JMZ\b)/,/^(?:JMN\b)/,/^(?:DJN\b)/,/^(?:SPL\b)/,/^(?:DAT\b)/,/^(?:EQU\b)/,/^(?:END\b)/,/^(?::)/,/^(?:,)/,/^(?:#)/,/^(?:@)/,/^(?:<)/,/^(?:\$)/,/^(?:\()/,/^(?:\))/,/^(?:\+)/,/^(?:-)/,/^(?:\*)/,/^(?:\/)/,/^(?:[0-9]+)/,/^(?:[A-Z][A-Z0-9_]+)/],
+conditions: {"comment":{"rules":[0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32],"inclusive":true},"INITIAL":{"rules":[0,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32],"inclusive":true}}
+});
+return lexer;
+})();
+parser.lexer = lexer;
+function Parser () {
+ this.yy = {};
+}
+Parser.prototype = parser;parser.Parser = Parser;
+return new Parser;
+})();
+
+
+if (typeof require !== 'undefined' && typeof exports !== 'undefined') {
+exports.parser = grammar;
+exports.Parser = grammar.Parser;
+exports.parse = function () { return grammar.parse.apply(grammar, arguments); };
+exports.main = function commonjsMain (args) {
+ if (!args[1]) {
+ console.log('Usage: '+args[0]+' FILE');
+ process.exit(1);
+ }
+ var source = require('fs').readFileSync(require('path').normalize(args[1]), "utf8");
+ return exports.parser.parse(source);
+};
+if (typeof module !== 'undefined' && require.main === module) {
+ exports.main(process.argv.slice(1));
+}
+} \ No newline at end of file
diff --git a/src/parser/test.red b/src/parser/test.red
new file mode 100644
index 0000000..54e3453
--- /dev/null
+++ b/src/parser/test.red
@@ -0,0 +1,3 @@
+MOV 0, 0
+
+END
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-22 18:50:08 +0000