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interpreter.js
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;(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);throw new Error("Cannot find module '"+o+"'")}var f=n[o]={exports:{}};t[o][0].call(f.exports,function(e){var n=t[o][1][e];return s(n?n:e)},f,f.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
var LexerException = (function () {
function LexerException(errorMessage) {
this.name = "LexerException";
this.message = errorMessage;
}
return LexerException;
})();
var Machine = require('./State');
var Tokens = require('./Tokens');
var pointer = 0;
var column = 0;
var currentChar = '';
var state = 1;
var token = '';
var tokens = [];
function analyze(input) {
token = '';
state = 1;
tokens = [];
Machine.Line++;
for(pointer = 0; pointer < input.length; pointer++) {
currentChar = input[pointer];
token += currentChar;
column = Machine.Columns.indexOf(currentChar) + 2;
if (column < 2) {
if (Machine.Letters.indexOf(currentChar.toUpperCase()) != -1) {
column = 0;
} else if (Machine.Numbers.indexOf(currentChar.toUpperCase()) != -1) {
column = 1;
} else if (state != 10 && state != 12) {
throw new LexerException('Unidentified character on line: ' + Machine.Line + ', char: ' + (pointer + 1));
}
}
state = Machine.LexTable[state][column];
var backup = checkForToken(false);
if (state == 1) {
if (backup) {
pointer--;
}
token = '';
}
}
state = Machine.LexTable[state][19];
checkForToken(true);
if (state != 1) {
throw new LexerException('Unexpected end of line at line ' + Machine.Line);
}
if (tokens.length > 0) {
tokens.push({
Type: Tokens.EndOfLine,
Literal: '$'
});
}
return tokens;
}
exports.analyze = analyze;
function checkForToken(endofline) {
switch(state) {
case 3:
if (!endofline) {
token = token.substr(0, token.length - 1);
}
if (Machine.Keywords.indexOf(token) != -1) {
tokens.push({
Type: Tokens.Keyword,
Literal: token
});
} else if (Machine.Operators.indexOf(token) != -1) {
tokens.push({
Type: Tokens.Operator,
Literal: token
});
} else {
if (Machine.Symbols.indexOf(token) == -1) {
Machine.Symbols.push(token);
}
tokens.push({
Type: Tokens.Identifier,
Literal: token
});
}
state = 1;
return true;
case 5:
if (!endofline) {
token = token.substr(0, token.length - 1);
}
tokens.push({
Type: Tokens.NumberLiteral,
Literal: token
});
state = 1;
return true;
case 6:
case 8:
tokens.push({
Type: Tokens.Operator,
Literal: token
});
state = 1;
return false;
case 9:
if (!endofline) {
token = token.substr(0, token.length - 1);
}
tokens.push({
Type: Tokens.Operator,
Literal: token
});
state = 1;
return true;
case 11:
tokens.push({
Type: Tokens.StringLiteral,
Literal: token
});
state = 1;
return false;
case 13:
state = 1;
return false;
case 14:
tokens.push({
Type: Tokens.Label,
Literal: token
});
state = 1;
return false;
case 15:
tokens.push({
Type: Tokens.Separator,
Literal: token
});
state = 1;
return false;
case 18:
if (!endofline) {
token = token.substr(0, token.length - 1);
}
tokens.push({
Type: Tokens.DecimalLiteral,
Literal: token
});
state = 1;
return true;
}
return false;
}
},{"./State":4,"./Tokens":5}],2:[function(require,module,exports){
var ParserException = (function () {
function ParserException(errorMessage) {
this.name = "ParserException";
this.message = errorMessage;
}
return ParserException;
})();
var Tokens = require('./Tokens');
var Machine = require('./State');
var ParserHandler = require('./ParserHandler');
function parse(input) {
Machine.State = 0;
Machine.Stack = [
{
State: 0,
Node: null
}
];
for(var x = 0; x < input.length; x++) {
var action = getParseAction(input[x]);
if (action.substr(0, 1) == "r") {
handleReduce(parseInt(action.substr(1)));
x--;
} else if (action == "acc") {
if (typeof (Machine.Stack) == "undefined") {
throw new ParserException("No tokens in parser input at line " + Machine.Line);
}
return Machine.Stack[1].Node;
} else if (action != "") {
Machine.State = parseInt(action);
Machine.Stack.push({
State: Machine.State,
Node: {
Type: input[x].Type,
Literal: input[x].Literal
}
});
} else {
if (input[x].Literal == '$') {
throw new ParserException("Unexpected end of line at line " + Machine.Line);
} else {
throw new ParserException("Unexpected token '" + input[x].Literal + "' at line " + Machine.Line);
}
}
}
if (Machine.Stack.length == 1) {
throw new ParserException("Incomplete input at line " + Machine.Line);
}
return null;
}
exports.parse = parse;
function getParseAction(token) {
if (token.Type == Tokens.Identifier) {
return Machine.GetParseAction('Iden');
} else if (token.Type == Tokens.Label) {
return Machine.GetParseAction('Lab');
} else if (token.Type == Tokens.DecimalLiteral || token.Type == Tokens.NumberLiteral || token.Type == Tokens.StringLiteral) {
return Machine.GetParseAction('Lit');
} else {
return Machine.GetParseAction(token.Literal);
}
}
function handleReduce(action) {
switch(action) {
case 1:
break;
case 2:
ParserHandler.HandleSingleRightSideProduction(2, 'S');
break;
case 3:
ParserHandler.HandleSingleRightSideProduction(3, 'S');
break;
case 4:
ParserHandler.HandleSingleRightSideProduction(4, 'S');
break;
case 5:
break;
case 6:
ParserHandler.HandleSingleRightSideProduction(6, 'S');
break;
case 7:
ParserHandler.HandleDoubleRightSideProduction(7, 'R');
break;
case 8:
ParserHandler.HandleDoubleRightSideProduction(8, 'S');
break;
case 9:
ParserHandler.HandleSingleRightSideProduction(9, 'S');
break;
case 10:
ParserHandler.HandleDoubleRightSideProduction(10, 'S');
break;
case 11:
ParserHandler.HandleSingleRightSideProduction(11, 'S');
break;
case 12:
ParserHandler.HandleDoubleRightSideProduction(12, 'S');
break;
case 13:
ParserHandler.HandleProduction13();
break;
case 14:
ParserHandler.HandleProduction14();
break;
case 15:
ParserHandler.HandleSingleRightSideProduction(15, 'S');
break;
case 16:
ParserHandler.HandleSingleRightSideProduction(16, 'A');
break;
case 18:
ParserHandler.HandleOperationProduction(18, 'B');
break;
case 19:
ParserHandler.HandleOperationProduction(19, 'E');
break;
case 20:
ParserHandler.HandleOperationProduction(20, 'E');
break;
case 21:
ParserHandler.HandleOperationProduction(21, 'E');
break;
case 22:
ParserHandler.HandleOperationProduction(22, 'E');
break;
case 23:
ParserHandler.HandleSingleRightSideProduction(23, 'E');
break;
case 24:
ParserHandler.HandleOperationProduction(24, 'T');
break;
case 25:
ParserHandler.HandleOperationProduction(25, 'T');
break;
case 26:
ParserHandler.HandleSingleRightSideProduction(26, 'T');
break;
case 27:
ParserHandler.HandleParenthesisExpression(27, 'F');
break;
case 28:
ParserHandler.HandleSingleRightSideProduction(28, 'F');
break;
case 29:
ParserHandler.HandleSingleRightSideProduction(29, 'F');
break;
case 30:
ParserHandler.HandleSingleRightSideProduction(30, 'G');
break;
case 31:
ParserHandler.HandleSingleRightSideProduction(31, 'G');
break;
case 32:
ParserHandler.HandleSingleRightSideProduction(32, 'G');
break;
case 33:
ParserHandler.HandleSingleRightSideProduction(33, 'G');
break;
case 34:
ParserHandler.HandleSingleRightSideProduction(34, 'G');
break;
case 35:
ParserHandler.HandleSingleRightSideProduction(35, 'S');
break;
}
}
},{"./ParserHandler":3,"./State":4,"./Tokens":5}],3:[function(require,module,exports){
var Tokens = require('./Tokens');
var Machine = require('./State');
function HandleSingleRightSideProduction(production, leftSide) {
var records = popRecordsFromStack(1);
pushNewNode({
Type: Tokens.Production,
Literal: production,
Left: records[0].Node
}, leftSide);
}
exports.HandleSingleRightSideProduction = HandleSingleRightSideProduction;
function HandleDoubleRightSideProduction(production, leftSide) {
var records = popRecordsFromStack(2);
pushNewNode({
Type: Tokens.Production,
Literal: production,
Left: records[0].Node,
Right: records[1].Node
}, leftSide);
}
exports.HandleDoubleRightSideProduction = HandleDoubleRightSideProduction;
function HandleOperationProduction(production, leftSide) {
var records = popRecordsFromStack(3);
pushNewNode({
Type: Tokens.Production,
Literal: production,
Left: records[2].Node,
Operator: records[1].Node.Literal,
Right: records[0].Node
}, leftSide);
}
exports.HandleOperationProduction = HandleOperationProduction;
function HandleParenthesisExpression(production, leftSide) {
var records = popRecordsFromStack(3);
pushNewNode({
Type: Tokens.Production,
Literal: production,
Left: records[1].Node
}, leftSide);
}
exports.HandleParenthesisExpression = HandleParenthesisExpression;
function HandleProduction13() {
var records = popRecordsFromStack(1);
var arguments = null;
var node = {
Type: Tokens.Production,
Literal: 13
};
if (peekLastNode().Literal != '(') {
do {
records = popRecordsFromStack(2);
arguments = {
Type: Tokens.Argument,
Literal: null,
Left: records[0].Node,
Right: arguments
};
} while(records[1].Node.Literal != '(');
} else {
popRecordsFromStack(1);
}
records = popRecordsFromStack(3);
node.Left = records[2].Node;
node.Right = records[0].Node;
node.Right.Right = arguments;
node.Operator = '.';
pushNewNode(node, 'S');
}
exports.HandleProduction13 = HandleProduction13;
function HandleProduction14() {
var records = popRecordsFromStack(3);
var node = {
Type: Tokens.Production,
Literal: 14
};
if (records[2].Node.Literal == '(') {
var record4 = popRecordsFromStack(1);
record4[0].Node.Left = records[1].Node;
node.Left = record4[0].Node;
} else {
node.Left = records[2].Node;
}
pushNewNode(node, 'S');
}
exports.HandleProduction14 = HandleProduction14;
function pushNewNode(node, leftSide) {
Machine.State = Machine.GetParseGoto(getLastState(), leftSide);
Machine.Stack.push({
State: Machine.State,
Node: node
});
}
function getLastState() {
return Machine.Stack[Machine.Stack.length - 1].State;
}
function peekLastNode() {
return Machine.Stack[Machine.Stack.length - 1].Node;
}
function popRecordsFromStack(amount) {
var records = [];
for(var x = 0; x < amount; x++) {
records.push(Machine.Stack.pop());
}
return records;
}
},{"./State":4,"./Tokens":5}],4:[function(require,module,exports){
exports.Columns = '+-*/().=,<>":[]\' ';
exports.Operators = [
'Or',
'And'
];
exports.Letters = '_ABCDEFGHIJKLMNOPQRSTUVWXYZ';
exports.Numbers = '0123456789';
exports.Symbols = [];
exports.Line = 0;
exports.Keywords = [
'For',
'To',
'Step',
'EndFor',
'If',
'Then',
'Else',
'EndIf',
'Goto',
'While',
'EndWhile',
'Sub',
'EndSub',
'ElseIf'
];
exports.Stack;
exports.State;
exports.LexTable = [
[
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0
],
[
2,
4,
6,
19,
6,
6,
15,
15,
6,
6,
6,
7,
21,
10,
6,
6,
6,
12,
1,
1,
0
],
[
2,
2,
3,
3,
3,
3,
3,
3,
3,
3,
3,
3,
3,
3,
14,
3,
3,
3,
3,
3,
0
],
[
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
],
[
5,
4,
5,
5,
5,
5,
5,
5,
16,
5,
5,
5,
5,
5,
5,
5,
5,
5,
5,
5,
0
],
[
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
],
[
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
0
],
[
9,
9,
9,
9,
9,
9,
9,
9,
9,
8,
9,
9,
8,
9,
9,
9,
9,
9,
9,
9,
1
],
[
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
0
],
[
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
],
[
10,
10,
10,
10,
10,
10,
10,
10,
10,
10,
10,
10,
10,
11,
10,
10,
10,
10,
10,
10,
0
],
[
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
0
],
[
12,
12,
12,
12,
12,
12,
12,
12,
12,
12,
12,
12,
12,
12,
12,
12,
12,
12,
12,
13,
0
],
[
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
0
],
[
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
0
],
[
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
0
],
[
0,
17,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0
],
[
18,
17,
18,
18,
18,
18,
18,
18,
18,
18,
18,
18,
18,
18,
18,
18,
18,
18,
18,
18,
0
],
[
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
],
[
9,
20,
9,
9,
9,
9,
9,
9,
9,
9,
9,
9,
9,
9,
9,
9,
9,
9,
9,
9,
0
],
[
5,
4,
5,
5,
5,
5,
5,
5,
16,
5,
5,
5,
5,
5,
5,
5,
5,
5,
5,
5,
0
],
[
9,
9,
9,
9,
9,
9,
9,
9,
9,
8,
9,
9,
9,
9,
9,
9,
9,
9,
9,
9,
1
]
];
var parseActions = {
'If': 0,
'Then': 1,
'Else': 2,
'ElseIf': 3,
'EndIf': 4,
'For': 5,
'To': 6,
'EndFor': 7,
'Step': 8,
'While': 9,
'EndWhile': 10,
'Sub': 11,
'EndSub': 12,
'Goto': 13,
'Iden': 14,
'Lab': 15,
'Lit': 16,
'.': 17,
',': 18,
'=': 19,
'+': 20,
'-': 21,
'/': 22,
'*': 23,
'(': 24,
')': 25,
'<': 26,
'>': 27,
'<>': 28,
'>=': 29,
'<=': 30,
'$': 31
};
function GetParseAction(terminal) {
return ParseActions[this.State][parseActions[terminal]];
}
exports.GetParseAction = GetParseAction;
var ParseActions = [