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parse.js
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parse.js
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function parseStmnt(arr, parent) {
var i = 0;
if (isTypeDefWord(arr[i].type) || arr[i].type == 'IDENTIFIER' || arr[i].type == 'DEC') {
var exprEndIndex = getNextSemicolonPos(arr, i, arr.length);
parent.nodes.push(startParseMathExpression(arr.slice(i, exprEndIndex)));
i = exprEndIndex + 1;
} else if (arr[i].type == 'FOR') {
} else if (arr[i].type == 'DO') {
if (arr[i + 1].type == 'LCBR') {
var bodyEndIndex = getNextRightCBrace(arr, i + 2, arr.length);
if (arr[bodyEndIndex + 1].type !== 'WHILE' || arr[bodyEndIndex + 2].type !== 'LPAR') return;
var exprEndIndex = getNextRightParances(arr, bodyEndIndex + 3, arr.length);
var node = {
type: "DO",
expr: parseTestExpression(arr.slice(bodyEndIndex + 3, exprEndIndex)),
nodes: []
};
parseStmnt(arr.slice(i + 2, bodyEndIndex), node);
parent.nodes.push(node);
i = exprEndIndex + 2;
}
} else if (arr[i].type == 'RET') {
}
if (i != arr.length) {
parseStmnt(arr.slice(i), parent);
}
}
function getNextSignWithoutBracesPos(arr, signArr) {
var openedBraces = 0;
for (var i = 0; i < arr.length; i++) {
for (var j = 0; j < signArr.length; j++) {
if (arr[i].type == signArr[j] && openedBraces == 0) {
return i;
} else if (arr[i].type == '(') {
openedBraces++;
} else if (arr[i].type == ')') {
openedBraces--;
}
};
};
return null;
}
function parseTokens(tokens) {
var node = {
type: "STMNT",
nodes: []
};
parseStmnt(tokens, node);
return node;
}
function parseStatement(str) {
var chars = str.split(" ");
var i = 0;
while (i < chars.length) {
var j = 0;
while (j < chars[i].length) {
var str = chars[i][j] + chars[i][j + 1];
if (isSpecSymbol_(str)) {
var a, b;
if (j == 0) {
if (chars[i].length == 2) break;
a = chars[i].substr(0, 2);
b = chars[i].substr(2);
} else {
a = chars[i].substring(0, j);
b = chars[i].substring(j);
}
chars[i] = a;
chars.splice(i + 1, 0, b);
break;
} else {
var str2 = chars[i][j];
if (isSpecSymbol_(str2)) {
var a, b;
if (j == 0) {
if (chars[i].length == 1) break;
a = chars[i].substr(0, 1);
b = chars[i].substr(1);
} else {
a = chars[i].substring(0, j);
b = chars[i].substring(j);
}
chars[i] = a;
chars.splice(i + 1, 0, b);
break;
}
j++;
}
};
i++;
};
return chars;
}