coffee-script-1.9.1.rewriter.js Maven / Gradle / Ivy
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A Maven 2.0 plugin for compiling coffeescript into javascript
// Generated by CoffeeScript 1.9.1
(function() {
var BALANCED_PAIRS, CALL_CLOSERS, EXPRESSION_CLOSE, EXPRESSION_END, EXPRESSION_START, IMPLICIT_CALL, IMPLICIT_END, IMPLICIT_FUNC, IMPLICIT_UNSPACED_CALL, INVERSES, LINEBREAKS, SINGLE_CLOSERS, SINGLE_LINERS, generate, k, left, len, ref, rite,
indexOf = [].indexOf || function(item) { for (var i = 0, l = this.length; i < l; i++) { if (i in this && this[i] === item) return i; } return -1; },
slice = [].slice;
generate = function(tag, value, origin) {
var tok;
tok = [tag, value];
tok.generated = true;
if (origin) {
tok.origin = origin;
}
return tok;
};
exports.Rewriter = (function() {
function Rewriter() {}
Rewriter.prototype.rewrite = function(tokens1) {
this.tokens = tokens1;
this.removeLeadingNewlines();
this.closeOpenCalls();
this.closeOpenIndexes();
this.normalizeLines();
this.tagPostfixConditionals();
this.addImplicitBracesAndParens();
this.addLocationDataToGeneratedTokens();
return this.tokens;
};
Rewriter.prototype.scanTokens = function(block) {
var i, token, tokens;
tokens = this.tokens;
i = 0;
while (token = tokens[i]) {
i += block.call(this, token, i, tokens);
}
return true;
};
Rewriter.prototype.detectEnd = function(i, condition, action) {
var levels, ref, ref1, token, tokens;
tokens = this.tokens;
levels = 0;
while (token = tokens[i]) {
if (levels === 0 && condition.call(this, token, i)) {
return action.call(this, token, i);
}
if (!token || levels < 0) {
return action.call(this, token, i - 1);
}
if (ref = token[0], indexOf.call(EXPRESSION_START, ref) >= 0) {
levels += 1;
} else if (ref1 = token[0], indexOf.call(EXPRESSION_END, ref1) >= 0) {
levels -= 1;
}
i += 1;
}
return i - 1;
};
Rewriter.prototype.removeLeadingNewlines = function() {
var i, k, len, ref, tag;
ref = this.tokens;
for (i = k = 0, len = ref.length; k < len; i = ++k) {
tag = ref[i][0];
if (tag !== 'TERMINATOR') {
break;
}
}
if (i) {
return this.tokens.splice(0, i);
}
};
Rewriter.prototype.closeOpenCalls = function() {
var action, condition;
condition = function(token, i) {
var ref;
return ((ref = token[0]) === ')' || ref === 'CALL_END') || token[0] === 'OUTDENT' && this.tag(i - 1) === ')';
};
action = function(token, i) {
return this.tokens[token[0] === 'OUTDENT' ? i - 1 : i][0] = 'CALL_END';
};
return this.scanTokens(function(token, i) {
if (token[0] === 'CALL_START') {
this.detectEnd(i + 1, condition, action);
}
return 1;
});
};
Rewriter.prototype.closeOpenIndexes = function() {
var action, condition;
condition = function(token, i) {
var ref;
return (ref = token[0]) === ']' || ref === 'INDEX_END';
};
action = function(token, i) {
return token[0] = 'INDEX_END';
};
return this.scanTokens(function(token, i) {
if (token[0] === 'INDEX_START') {
this.detectEnd(i + 1, condition, action);
}
return 1;
});
};
Rewriter.prototype.indexOfTag = function() {
var fuzz, i, j, k, pattern, ref, ref1;
i = arguments[0], pattern = 2 <= arguments.length ? slice.call(arguments, 1) : [];
fuzz = 0;
for (j = k = 0, ref = pattern.length; 0 <= ref ? k < ref : k > ref; j = 0 <= ref ? ++k : --k) {
while (this.tag(i + j + fuzz) === 'HERECOMMENT') {
fuzz += 2;
}
if (pattern[j] == null) {
continue;
}
if (typeof pattern[j] === 'string') {
pattern[j] = [pattern[j]];
}
if (ref1 = this.tag(i + j + fuzz), indexOf.call(pattern[j], ref1) < 0) {
return -1;
}
}
return i + j + fuzz - 1;
};
Rewriter.prototype.looksObjectish = function(j) {
var end, index;
if (this.indexOfTag(j, '@', null, ':') > -1 || this.indexOfTag(j, null, ':') > -1) {
return true;
}
index = this.indexOfTag(j, EXPRESSION_START);
if (index > -1) {
end = null;
this.detectEnd(index + 1, (function(token) {
var ref;
return ref = token[0], indexOf.call(EXPRESSION_END, ref) >= 0;
}), (function(token, i) {
return end = i;
}));
if (this.tag(end + 1) === ':') {
return true;
}
}
return false;
};
Rewriter.prototype.findTagsBackwards = function(i, tags) {
var backStack, ref, ref1, ref2, ref3, ref4, ref5;
backStack = [];
while (i >= 0 && (backStack.length || (ref2 = this.tag(i), indexOf.call(tags, ref2) < 0) && ((ref3 = this.tag(i), indexOf.call(EXPRESSION_START, ref3) < 0) || this.tokens[i].generated) && (ref4 = this.tag(i), indexOf.call(LINEBREAKS, ref4) < 0))) {
if (ref = this.tag(i), indexOf.call(EXPRESSION_END, ref) >= 0) {
backStack.push(this.tag(i));
}
if ((ref1 = this.tag(i), indexOf.call(EXPRESSION_START, ref1) >= 0) && backStack.length) {
backStack.pop();
}
i -= 1;
}
return ref5 = this.tag(i), indexOf.call(tags, ref5) >= 0;
};
Rewriter.prototype.addImplicitBracesAndParens = function() {
var stack, start;
stack = [];
start = null;
return this.scanTokens(function(token, i, tokens) {
var endImplicitCall, endImplicitObject, forward, inImplicit, inImplicitCall, inImplicitControl, inImplicitObject, newLine, nextTag, offset, prevTag, prevToken, ref, ref1, ref2, ref3, ref4, ref5, s, sameLine, stackIdx, stackTag, stackTop, startIdx, startImplicitCall, startImplicitObject, startsLine, tag;
tag = token[0];
prevTag = (prevToken = i > 0 ? tokens[i - 1] : [])[0];
nextTag = (i < tokens.length - 1 ? tokens[i + 1] : [])[0];
stackTop = function() {
return stack[stack.length - 1];
};
startIdx = i;
forward = function(n) {
return i - startIdx + n;
};
inImplicit = function() {
var ref, ref1;
return (ref = stackTop()) != null ? (ref1 = ref[2]) != null ? ref1.ours : void 0 : void 0;
};
inImplicitCall = function() {
var ref;
return inImplicit() && ((ref = stackTop()) != null ? ref[0] : void 0) === '(';
};
inImplicitObject = function() {
var ref;
return inImplicit() && ((ref = stackTop()) != null ? ref[0] : void 0) === '{';
};
inImplicitControl = function() {
var ref;
return inImplicit && ((ref = stackTop()) != null ? ref[0] : void 0) === 'CONTROL';
};
startImplicitCall = function(j) {
var idx;
idx = j != null ? j : i;
stack.push([
'(', idx, {
ours: true
}
]);
tokens.splice(idx, 0, generate('CALL_START', '('));
if (j == null) {
return i += 1;
}
};
endImplicitCall = function() {
stack.pop();
tokens.splice(i, 0, generate('CALL_END', ')', ['', 'end of input', token[2]]));
return i += 1;
};
startImplicitObject = function(j, startsLine) {
var idx, val;
if (startsLine == null) {
startsLine = true;
}
idx = j != null ? j : i;
stack.push([
'{', idx, {
sameLine: true,
startsLine: startsLine,
ours: true
}
]);
val = new String('{');
val.generated = true;
tokens.splice(idx, 0, generate('{', val, token));
if (j == null) {
return i += 1;
}
};
endImplicitObject = function(j) {
j = j != null ? j : i;
stack.pop();
tokens.splice(j, 0, generate('}', '}', token));
return i += 1;
};
if (inImplicitCall() && (tag === 'IF' || tag === 'TRY' || tag === 'FINALLY' || tag === 'CATCH' || tag === 'CLASS' || tag === 'SWITCH')) {
stack.push([
'CONTROL', i, {
ours: true
}
]);
return forward(1);
}
if (tag === 'INDENT' && inImplicit()) {
if (prevTag !== '=>' && prevTag !== '->' && prevTag !== '[' && prevTag !== '(' && prevTag !== ',' && prevTag !== '{' && prevTag !== 'TRY' && prevTag !== 'ELSE' && prevTag !== '=') {
while (inImplicitCall()) {
endImplicitCall();
}
}
if (inImplicitControl()) {
stack.pop();
}
stack.push([tag, i]);
return forward(1);
}
if (indexOf.call(EXPRESSION_START, tag) >= 0) {
stack.push([tag, i]);
return forward(1);
}
if (indexOf.call(EXPRESSION_END, tag) >= 0) {
while (inImplicit()) {
if (inImplicitCall()) {
endImplicitCall();
} else if (inImplicitObject()) {
endImplicitObject();
} else {
stack.pop();
}
}
start = stack.pop();
}
if ((indexOf.call(IMPLICIT_FUNC, tag) >= 0 && token.spaced || tag === '?' && i > 0 && !tokens[i - 1].spaced) && (indexOf.call(IMPLICIT_CALL, nextTag) >= 0 || indexOf.call(IMPLICIT_UNSPACED_CALL, nextTag) >= 0 && !((ref = tokens[i + 1]) != null ? ref.spaced : void 0) && !((ref1 = tokens[i + 1]) != null ? ref1.newLine : void 0))) {
if (tag === '?') {
tag = token[0] = 'FUNC_EXIST';
}
startImplicitCall(i + 1);
return forward(2);
}
if (indexOf.call(IMPLICIT_FUNC, tag) >= 0 && this.indexOfTag(i + 1, 'INDENT', null, ':') > -1 && !this.findTagsBackwards(i, ['CLASS', 'EXTENDS', 'IF', 'CATCH', 'SWITCH', 'LEADING_WHEN', 'FOR', 'WHILE', 'UNTIL'])) {
startImplicitCall(i + 1);
stack.push(['INDENT', i + 2]);
return forward(3);
}
if (tag === ':') {
s = (function() {
var ref2;
switch (false) {
case ref2 = this.tag(i - 1), indexOf.call(EXPRESSION_END, ref2) < 0:
return start[1];
case this.tag(i - 2) !== '@':
return i - 2;
default:
return i - 1;
}
}).call(this);
while (this.tag(s - 2) === 'HERECOMMENT') {
s -= 2;
}
this.insideForDeclaration = nextTag === 'FOR';
startsLine = s === 0 || (ref2 = this.tag(s - 1), indexOf.call(LINEBREAKS, ref2) >= 0) || tokens[s - 1].newLine;
if (stackTop()) {
ref3 = stackTop(), stackTag = ref3[0], stackIdx = ref3[1];
if ((stackTag === '{' || stackTag === 'INDENT' && this.tag(stackIdx - 1) === '{') && (startsLine || this.tag(s - 1) === ',' || this.tag(s - 1) === '{')) {
return forward(1);
}
}
startImplicitObject(s, !!startsLine);
return forward(2);
}
if (inImplicitObject() && indexOf.call(LINEBREAKS, tag) >= 0) {
stackTop()[2].sameLine = false;
}
newLine = prevTag === 'OUTDENT' || prevToken.newLine;
if (indexOf.call(IMPLICIT_END, tag) >= 0 || indexOf.call(CALL_CLOSERS, tag) >= 0 && newLine) {
while (inImplicit()) {
ref4 = stackTop(), stackTag = ref4[0], stackIdx = ref4[1], (ref5 = ref4[2], sameLine = ref5.sameLine, startsLine = ref5.startsLine);
if (inImplicitCall() && prevTag !== ',') {
endImplicitCall();
} else if (inImplicitObject() && !this.insideForDeclaration && sameLine && tag !== 'TERMINATOR' && prevTag !== ':') {
endImplicitObject();
} else if (inImplicitObject() && tag === 'TERMINATOR' && prevTag !== ',' && !(startsLine && this.looksObjectish(i + 1))) {
if (nextTag === 'HERECOMMENT') {
return forward(1);
}
endImplicitObject();
} else {
break;
}
}
}
if (tag === ',' && !this.looksObjectish(i + 1) && inImplicitObject() && !this.insideForDeclaration && (nextTag !== 'TERMINATOR' || !this.looksObjectish(i + 2))) {
offset = nextTag === 'OUTDENT' ? 1 : 0;
while (inImplicitObject()) {
endImplicitObject(i + offset);
}
}
return forward(1);
});
};
Rewriter.prototype.addLocationDataToGeneratedTokens = function() {
return this.scanTokens(function(token, i, tokens) {
var column, line, nextLocation, prevLocation, ref, ref1;
if (token[2]) {
return 1;
}
if (!(token.generated || token.explicit)) {
return 1;
}
if (token[0] === '{' && (nextLocation = (ref = tokens[i + 1]) != null ? ref[2] : void 0)) {
line = nextLocation.first_line, column = nextLocation.first_column;
} else if (prevLocation = (ref1 = tokens[i - 1]) != null ? ref1[2] : void 0) {
line = prevLocation.last_line, column = prevLocation.last_column;
} else {
line = column = 0;
}
token[2] = {
first_line: line,
first_column: column,
last_line: line,
last_column: column
};
return 1;
});
};
Rewriter.prototype.normalizeLines = function() {
var action, condition, indent, outdent, starter;
starter = indent = outdent = null;
condition = function(token, i) {
var ref, ref1, ref2, ref3;
return token[1] !== ';' && (ref = token[0], indexOf.call(SINGLE_CLOSERS, ref) >= 0) && !(token[0] === 'TERMINATOR' && (ref1 = this.tag(i + 1), indexOf.call(EXPRESSION_CLOSE, ref1) >= 0)) && !(token[0] === 'ELSE' && starter !== 'THEN') && !(((ref2 = token[0]) === 'CATCH' || ref2 === 'FINALLY') && (starter === '->' || starter === '=>')) || (ref3 = token[0], indexOf.call(CALL_CLOSERS, ref3) >= 0) && this.tokens[i - 1].newLine;
};
action = function(token, i) {
return this.tokens.splice((this.tag(i - 1) === ',' ? i - 1 : i), 0, outdent);
};
return this.scanTokens(function(token, i, tokens) {
var j, k, ref, ref1, ref2, tag;
tag = token[0];
if (tag === 'TERMINATOR') {
if (this.tag(i + 1) === 'ELSE' && this.tag(i - 1) !== 'OUTDENT') {
tokens.splice.apply(tokens, [i, 1].concat(slice.call(this.indentation())));
return 1;
}
if (ref = this.tag(i + 1), indexOf.call(EXPRESSION_CLOSE, ref) >= 0) {
tokens.splice(i, 1);
return 0;
}
}
if (tag === 'CATCH') {
for (j = k = 1; k <= 2; j = ++k) {
if (!((ref1 = this.tag(i + j)) === 'OUTDENT' || ref1 === 'TERMINATOR' || ref1 === 'FINALLY')) {
continue;
}
tokens.splice.apply(tokens, [i + j, 0].concat(slice.call(this.indentation())));
return 2 + j;
}
}
if (indexOf.call(SINGLE_LINERS, tag) >= 0 && this.tag(i + 1) !== 'INDENT' && !(tag === 'ELSE' && this.tag(i + 1) === 'IF')) {
starter = tag;
ref2 = this.indentation(tokens[i]), indent = ref2[0], outdent = ref2[1];
if (starter === 'THEN') {
indent.fromThen = true;
}
tokens.splice(i + 1, 0, indent);
this.detectEnd(i + 2, condition, action);
if (tag === 'THEN') {
tokens.splice(i, 1);
}
return 1;
}
return 1;
});
};
Rewriter.prototype.tagPostfixConditionals = function() {
var action, condition, original;
original = null;
condition = function(token, i) {
var prevTag, tag;
tag = token[0];
prevTag = this.tokens[i - 1][0];
return tag === 'TERMINATOR' || (tag === 'INDENT' && indexOf.call(SINGLE_LINERS, prevTag) < 0);
};
action = function(token, i) {
if (token[0] !== 'INDENT' || (token.generated && !token.fromThen)) {
return original[0] = 'POST_' + original[0];
}
};
return this.scanTokens(function(token, i) {
if (token[0] !== 'IF') {
return 1;
}
original = token;
this.detectEnd(i + 1, condition, action);
return 1;
});
};
Rewriter.prototype.indentation = function(origin) {
var indent, outdent;
indent = ['INDENT', 2];
outdent = ['OUTDENT', 2];
if (origin) {
indent.generated = outdent.generated = true;
indent.origin = outdent.origin = origin;
} else {
indent.explicit = outdent.explicit = true;
}
return [indent, outdent];
};
Rewriter.prototype.generate = generate;
Rewriter.prototype.tag = function(i) {
var ref;
return (ref = this.tokens[i]) != null ? ref[0] : void 0;
};
return Rewriter;
})();
BALANCED_PAIRS = [['(', ')'], ['[', ']'], ['{', '}'], ['INDENT', 'OUTDENT'], ['CALL_START', 'CALL_END'], ['PARAM_START', 'PARAM_END'], ['INDEX_START', 'INDEX_END'], ['STRING_START', 'STRING_END'], ['REGEX_START', 'REGEX_END']];
exports.INVERSES = INVERSES = {};
EXPRESSION_START = [];
EXPRESSION_END = [];
for (k = 0, len = BALANCED_PAIRS.length; k < len; k++) {
ref = BALANCED_PAIRS[k], left = ref[0], rite = ref[1];
EXPRESSION_START.push(INVERSES[rite] = left);
EXPRESSION_END.push(INVERSES[left] = rite);
}
EXPRESSION_CLOSE = ['CATCH', 'THEN', 'ELSE', 'FINALLY'].concat(EXPRESSION_END);
IMPLICIT_FUNC = ['IDENTIFIER', 'SUPER', ')', 'CALL_END', ']', 'INDEX_END', '@', 'THIS'];
IMPLICIT_CALL = ['IDENTIFIER', 'NUMBER', 'STRING', 'STRING_START', 'JS', 'REGEX', 'REGEX_START', 'NEW', 'PARAM_START', 'CLASS', 'IF', 'TRY', 'SWITCH', 'THIS', 'BOOL', 'NULL', 'UNDEFINED', 'UNARY', 'YIELD', 'UNARY_MATH', 'SUPER', 'THROW', '@', '->', '=>', '[', '(', '{', '--', '++'];
IMPLICIT_UNSPACED_CALL = ['+', '-'];
IMPLICIT_END = ['POST_IF', 'FOR', 'WHILE', 'UNTIL', 'WHEN', 'BY', 'LOOP', 'TERMINATOR'];
SINGLE_LINERS = ['ELSE', '->', '=>', 'TRY', 'FINALLY', 'THEN'];
SINGLE_CLOSERS = ['TERMINATOR', 'CATCH', 'FINALLY', 'ELSE', 'OUTDENT', 'LEADING_WHEN'];
LINEBREAKS = ['TERMINATOR', 'INDENT', 'OUTDENT'];
CALL_CLOSERS = ['.', '?.', '::', '?::'];
}).call(this);
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