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grammar.pegjs
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grammar.pegjs
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{
var CS = require("./nodes"),
inspect = function(o){ console.log(require('util').inspect(o, false, 9e9, true)); },
constructorLookup =
{ ';': CS.SeqOp
, '=': CS.AssignOp
, '&&': CS.LogicalAndOp
, and: CS.LogicalAndOp
, '||': CS.LogicalOrOp
, or: CS.LogicalOrOp
, '|': CS.BitOrOp
, '^': CS.BitXorOp
, '&': CS.BitAndOp
, '?': CS.ExistsOp
, '==': CS.EQOp
, is: CS.EQOp
, '!=': CS.NEQOp
, isnt: CS.NEQOp
, '<=': CS.LTEOp
, '>=': CS.GTEOp
, '<': CS.LTOp
, '>': CS.GTOp
, extends: CS.ExtendsOp
, instanceof: CS.InstanceofOp
, in: CS.InOp
, of: CS.OfOp
, '<<': CS.LeftShiftOp
, '>>': CS.SignedRightShiftOp
, '>>>': CS.UnsignedRightShiftOp
, '+': CS.PlusOp
, '-': CS.SubtractOp
, '*': CS.MultiplyOp
, '/': CS.DivideOp
, '%': CS.RemOp
, '**': CS.ExpOp
},
foldl = function(fn, memo, list){
for(var i = 0, l = list.length; i < l; ++i)
memo = fn(memo, list[i]);
return memo;
},
foldr = function(fn, memo, list){
for(var i = list.length; i--;)
memo = fn(memo, list[i]);
return memo;
},
createInterpolation = function(es){
var init = new CS.String('').g();
return foldl(function(memo, s){
if(s instanceof CS.String) {
var left = memo;
while(left)
if(left instanceof CS.String) {
if(left === init) delete left.p(s.line, s.column, s.offset).generated;
left.data = left.data + s.data;
return memo;
} else if(left instanceof CS.ConcatOp) {
left = left.right
} else {
break;
}
}
return new CS.ConcatOp(memo, s);
}, init, es);
},
createMemberExpression = function(e, accesses){
return foldl(function(left, access){
var F = function(){};
F.prototype = access.op.prototype;
var o = new F;
// rather safely assumes access.op is returning non-Object
access.op.apply(o, [left].concat(access.operands));
return o.r(left.raw + access.raw).p(access.line, access.column, access.offset);
}, e, accesses);
},
isValidRegExpFlags = function(flags) {
if(!flags) return true;
if(flags.length > 4) return false;
flags.sort();
var flag = null;
for(var i = 0, l = flags.length; i < l; ++i)
if(flag == flags[i]) return false;
else flag = flags[i];
return true;
},
stripLeadingWhitespace = function(str){
str = str.replace(/\s+$/, '');
var attempt, match, matchStr = str, indent = null;
while(match = /\n+([^\n\S]*)/.exec(matchStr)) {
attempt = match[1];
matchStr = matchStr.slice(match.index + match[0].length);
if (indent == null || 0 < attempt.length && attempt.length < indent.length)
indent = attempt;
}
if(indent) str = str.replace(new RegExp('\\n' + indent, 'g'), '\n');
str = str.replace(/^\n/, '');
return str;
};
}
start = program
// TODO: DRY everything!
// TODO: clean up
// TODO: this is JS; equality comparisons should have literals on left if possible
program
= leader:TERMINATOR? b:(_ toplevelBlock)? {
var block;
if(b) {
block = b[1];
return new CS.Program(block).r(leader + b[0] + block.raw).p(line, column, offset);
} else {
return new CS.Program().r(leader).p(line, column, offset);
}
}
toplevelBlock
= s:toplevelStatement ss:(_ TERMINATOR _ toplevelStatement)* term:TERMINATOR? {
var raw = s.raw + ss.map(function(s){ return s[0] + s[1] + s[2] + s[3].raw; }).join('') + term;
return new CS.Block([s].concat(ss.map(function(s){ return s[3]; }))).r(raw).p(line, column, offset);
}
toplevelStatement = !(return / continue / break) s:statement { return s; }
block
= s:statement ss:(_ TERMINATOR _ statement)* term:TERMINATOR? {
var raw = s.raw + ss.map(function(s){ return s[0] + s[1] + s[2] + s[3].raw; }).join('') + term;
return new CS.Block([s].concat(ss.map(function(s){ return s[3]; }))).r(raw).p(line, column, offset);
}
statement
= expression
/ return
/ continue
/ break
/ throw
/ debugger
expression = expressionworthy / seqExpression
secondaryStatement
= secondaryExpression
/ return
/ continue
/ break
/ throw
/ debugger
// secondaryExpression forbids anything lower precedence than assignmentExpression
secondaryExpression = expressionworthy / assignmentExpression
// TODO: rename?
expressionworthy
= functionLiteral
/ conditional
/ while
/ loop
/ try
/ forOf
/ forIn
/ class
/ switch
/ implicitObjectLiteral
// begin expression waterfall
seqExpression
= left:postfixControlFlowExpression right:(_ ";" TERMINATOR? _ expression)? {
if(!right) return left;
var raw = left.raw + right[0] + right[1] + right[2] + right[3] + right[4].raw;
return new CS.SeqOp(left, right[4]).r(raw).p(line, column, offset);
}
postfixControlFlowOp
= kw:(IF / UNLESS) ws:_ e:assignmentExpression { return {type: kw, cond: e, raw: kw + ws + e.raw}; }
/ kw:(WHILE / UNTIL) ws:_ e:assignmentExpression { return {type: kw, cond: e, raw: kw + ws + e.raw}; }
/ FOR ws0:_ val:Assignable ws1:_ maybeKey:("," _ Assignable _)? IN ws2:_ list:assignmentExpression maybeStep:(_ BY _ assignmentExpression)? maybeFilter:(_ WHEN _ assignmentExpression)? {
var key = maybeKey ? maybeKey[2] : null,
step = maybeStep ? maybeStep[3] : new CS.Int(1).r('1').g(),
filter = maybeFilter ? maybeFilter[3] : null;
return 0,
{ type: 'for-in'
, val: val, key: key, list: list, step: step, filter: filter
, raw: 'for' + ws0 + val.raw + ws1 + (key ? maybeKey[0] + maybeKey[1] + key.raw + maybeKey[3] : '') +
'in' + ws2 + list.raw + (step ? maybeStep[0] + 'by' + maybeStep[2] + step.raw : '') +
(filter ? maybeFilter[0] + 'when' + maybeFilter[2] + filter.raw : '')
};
}
/ FOR ws0:_ maybeOwn:(OWN _)? key:Assignable ws1:_ maybeVal:("," _ Assignable _)? OF ws2:_ obj:assignmentExpression maybeFilter:(_ WHEN _ assignmentExpression)? {
var own = !!maybeOwn,
val = maybeVal ? maybeVal[2] : null,
filter = maybeFilter ? maybeFilter[3] : null;
return 0,
{ type: 'for-of'
, own: own, key: key, val: val, obj: obj, filter: filter
, raw: 'for' + ws0 + (own ? 'own' + maybeOwn[1] : '') + key.raw + ws1 +
(val ? maybeVal[0] + maybeVal[1] + val.raw + maybeVal[3] : '') + 'of' + ws2 + obj.raw +
(filter ? maybeFilter[0] + 'when' + maybeFilter[2] + filter.raw : '')
};
}
postfixControlFlowExpression
= expr:secondaryStatement postfixes:(_ postfixControlFlowOp)* {
return foldl(function(expr, postfixContainer){
var raw, constructor, cond,
ws = postfixContainer[0],
postfix = postfixContainer[1],
indicator = postfix.type;
switch(indicator){
case 'if':
case 'unless':
raw = expr.raw + ws + postfix.raw;
constructor = (indicator == 'unless') ? CS.NegatedConditional : CS.Conditional;
cond = (indicator == 'unless') ? new CS.LogicalNotOp(postfix.cond).g() : postfix.cond;
return new constructor(cond, expr, null).r(raw).p(line, column, offset)
case 'while':
case 'until':
raw = expr.raw + ws + postfix.raw;
constructor = (indicator == 'until') ? CS.NegatedWhile : CS.While;
cond = (indicator == 'until') ? new CS.LogicalNotOp(postfix.cond).g() : postfix.cond;
return new constructor(cond, expr).r(raw).p(line, column, offset)
case 'for-in':
raw = expr.raw + ws + postfix.raw;
return new CS.ForIn(postfix.val, postfix.key, postfix.list, postfix.step, postfix.filter, expr).r(raw).p(line, column, offset);
case 'for-of':
raw = expr.raw + ws + postfix.raw;
return new CS.ForOf(postfix.own, postfix.key, postfix.val, postfix.obj, postfix.filter, expr).r(raw).p(line, column, offset);
}
}, expr, postfixes)
}
assignmentExpression
= assignmentOp
/ compoundAssignmentOp
/ existsAssignmentOp
/ logicalOrExpression
assignmentOp
= left:Assignable ws0:_ "=" !"=" right:
( t:TERMINDENT e:secondaryExpression d:DEDENT { return {raw: t + e.raw + d, expr: e}; }
/ t:TERMINATOR? ws1:_ e:secondaryExpression { return {raw: t + ws1 + e.raw, expr: e}; }
) {
var raw = left.raw + ws0 + '=' + right.raw;
return new CS.AssignOp(left, right.expr).r(raw).p(line, column, offset);
}
CompoundAssignmentOperators
= "**" / "*" / "/" / "%" / "+" / "-" / "<<" / ">>>" / ">>" / AND / OR / "&&" / "||" / "&" / "^" / "|"
compoundAssignmentOp
= left:CompoundAssignable ws0:_ op:CompoundAssignmentOperators "=" right:
( t:TERMINDENT e:secondaryExpression d:DEDENT { return {raw: t + e.raw + d, expr: e}; }
/ t:TERMINATOR? ws1:_ e:secondaryExpression { return {raw: t + ws1 + e.raw, expr: e}; }
) {
var raw = left.raw + ws0 + op + '=' + right.raw;
return new CS.CompoundAssignOp(constructorLookup[op].prototype.className, left, right.expr).r(raw).p(line, column, offset);
}
existsAssignmentOp
= left:ExistsAssignable ws0:_ "?=" ws1:_ right:
( t:TERMINDENT e:secondaryExpression d:DEDENT { return {raw: t + e.raw + d, expr: e}; }
/ t:TERMINATOR? ws1:_ e:secondaryExpression { return {raw: t + ws1 + e.raw, expr: e}; }
) {
var raw = left.raw + ws0 + '?=' + right.raw;
return new CS.ExistsAssignOp(left, right.expr).r(raw).p(line, column, offset);
}
logicalOrExpression
= left:logicalAndExpression rights:(_ ("||" / OR) !"=" TERMINATOR? _ (expressionworthy / logicalAndExpression))* {
if(!rights) return left;
return foldl(function(expr, right){
var raw = left.raw + right[0] + right[1] + right[3] + right[4] + right[5].raw;
return new CS.LogicalOrOp(expr, right[5]).r(raw).p(line, column, offset);
}, left, rights);
}
logicalAndExpression
= left:bitwiseOrExpression rights:(_ ("&&" / AND) !"=" TERMINATOR? _ (expressionworthy / bitwiseOrExpression))* {
if(!rights) return left;
return foldl(function(expr, right){
var raw = left.raw + right[0] + right[1] + right[3] + right[4] + right[5].raw;
return new CS.LogicalAndOp(expr, right[5]).r(raw).p(line, column, offset);
}, left, rights);
}
bitwiseOrExpression
= left:bitwiseXorExpression rights:(_ "|" !"=" TERMINATOR? _ (expressionworthy / bitwiseXorExpression))* {
if(!rights) return left;
return foldl(function(expr, right){
var raw = left.raw + right[0] + right[1] + right[3] + right[4] + right[5].raw;
return new CS.BitOrOp(expr, right[5]).r(raw).p(line, column, offset);
}, left, rights);
}
bitwiseXorExpression
= left:bitwiseAndExpression rights:(_ "^" !"=" TERMINATOR? _ (expressionworthy / bitwiseAndExpression))* {
if(!rights) return left;
return foldl(function(expr, right){
var raw = left.raw + right[0] + right[1] + right[3] + right[4] + right[5].raw;
return new CS.BitXorOp(expr, right[5]).r(raw).p(line, column, offset);
}, left, rights);
}
bitwiseAndExpression
= left:existentialExpression rights:(_ "&" !"=" TERMINATOR? _ (expressionworthy / existentialExpression))* {
if(!rights) return left;
return foldl(function(expr, right){
var raw = left.raw + right[0] + right[1] + right[3] + right[4] + right[5].raw;
return new CS.BitAndOp(expr, right[5]).r(raw).p(line, column, offset);
}, left, rights);
}
existentialExpression
= left:comparisonExpression right:(_ "?" !"=" TERMINATOR? _ (expressionworthy / existentialExpression))? {
if(!right) return left;
var raw = left.raw + right[0] + right[1] + right[3] + right[4] + right[5].raw;
return new CS.ExistsOp(left, right[5]).r(raw).p(line, column, offset);
}
comparisonExpression
= left:relationalExpression rights:(_ ("<=" / ">=" / "<" / ">" / "==" / IS / "!=" / ISNT) _ (expressionworthy / relationalExpression))* {
if(!rights) return left;
var tree = foldl(function(expr, right){
var raw = expr.raw + right[0] + right[1] + right[2] + right[3].raw;
return new constructorLookup[right[1]](expr, right[3]).r(raw).p(line, column, offset);
}, left, rights);
return rights.length < 2 ? tree : new CS.ChainedComparisonOp(tree).r(tree.raw).p(line, column, offset);
}
relationalExpression
= left:bitwiseShiftExpression rights:(_ relationalExpressionOperator TERMINATOR? _ (expressionworthy / bitwiseShiftExpression))* {
if(!rights) return left;
return foldl(function(expr, right){
var raw = expr.raw + right[0] + right[1].raw + right[2] + right[3] + right[4].raw;
return right[1](expr, right[4], raw, line, column, offset);
}, left, rights);
}
relationalExpressionOperator
= op:(EXTENDS / INSTANCEOF / IN / OF) {
var fn = function(left, right, raw, line, column, offset){
return new constructorLookup[op](left, right).r(raw).p(line, column, offset);
};
fn.raw = op;
return fn;
}
/ NOT ws:_ op:(INSTANCEOF / IN / OF) {
var fn = function(left, right, raw, line, column, offset){
return new CS.LogicalNotOp(new constructorLookup[op](left, right).r(raw).p(line, column, offset)).r(raw).g();
};
fn.raw = 'not' + ws + op;
return fn;
}
bitwiseShiftExpression
= left:additiveExpression rights:(_ ("<<" / ">>>" / ">>") !"=" TERMINATOR? _ (expressionworthy / additiveExpression))* {
if(!rights) return left;
return foldl(function(expr, right){
var raw = left.raw + right[0] + right[1] + right[3] + right[4] + right[5].raw;
return new constructorLookup[right[1]](expr, right[5]).r(raw).p(line, column, offset);
}, left, rights);
}
additiveExpression
= left:multiplicativeExpression rights:(_ ("+" ![+=] / "-" ![-=]) TERMINATOR? _ (expressionworthy / multiplicativeExpression))* {
if(!rights) return left;
return foldl(function(expr, right){
var raw = expr.raw + right[0] + right[1][0] + right[2] + right[3] + right[4].raw;
return new constructorLookup[right[1][0]](expr, right[4]).r(raw).p(line, column, offset);
}, left, rights);
}
multiplicativeExpression
= left:exponentiationExpression rights:(_ [*/%] !"=" TERMINATOR? _ (expressionworthy / exponentiationExpression))* {
if(!rights) return left;
return foldl(function(expr, right){
var raw = left.raw + right[0] + right[1] + right[3] + right[4] + right[5].raw;
return new constructorLookup[right[1]](expr, right[5]).r(raw).p(line, column, offset);
}, left, rights);
}
exponentiationExpression
= left:prefixExpression right:(_ "**" !"=" TERMINATOR? _ (expressionworthy / exponentiationExpression))? {
if(!right) return left;
var raw = left.raw + right[0] + right[1] + right[3] + right[4] + right[5].raw;
return new CS.ExpOp(left, right[5]).r(raw).p(line, column, offset);
}
prefixExpression
= postfixExpression
/ "++" ws:_ e:(expressionworthy / prefixExpression) { return new CS.PreIncrementOp(e).r('++' + ws + e.raw).p(line, column, offset); }
/ "--" ws:_ e:(expressionworthy / prefixExpression) { return new CS.PreDecrementOp(e).r('--' + ws + e.raw).p(line, column, offset); }
/ "+" ws:_ e:(expressionworthy / prefixExpression) { return new CS.UnaryPlusOp(e).r('+' + ws + e.raw).p(line, column, offset); }
/ "-" ws:_ e:(expressionworthy / prefixExpression) { return new CS.UnaryNegateOp(e).r('-' + ws + e.raw).p(line, column, offset); }
/ o:("!" / NOT) ws:_ e:(expressionworthy / prefixExpression) { return new CS.LogicalNotOp(e).r(o + ws + e.raw).p(line, column, offset); }
/ "~" ws:_ e:(expressionworthy / prefixExpression) { return new CS.BitNotOp(e).r('~' + ws + e.raw).p(line, column, offset); }
/ DO ws0:_ !unassignable a:identifier ws1:_ "=" ws2:_ f:functionLiteral {
return new CS.DoOp(new CS.AssignOp(a, f)).r('do' + ws0 + a.raw + ws1 + '+' + ws2 + f.raw).p(line, column, offset);
}
/ DO ws:_ e:(expressionworthy / prefixExpression) { return new CS.DoOp(e).r('do' + ws + e.raw).p(line, column, offset); }
/ TYPEOF ws:_ e:(expressionworthy / prefixExpression) { return new CS.TypeofOp(e).r('typeof' + ws + e.raw).p(line, column, offset); }
/ DELETE ws:_ e:(expressionworthy / prefixExpression) { return new CS.DeleteOp(e).r('delete' + ws + e.raw).p(line, column, offset); }
postfixExpression
= expr:leftHandSideExpression ops:("?" / "[..]" / "++" / "--")* {
return foldl(function(expr, op){
var raw;
switch(op){
case '?': return new CS.UnaryExistsOp(expr).r(expr.raw + op).p(line, column, offset)
case '[..]': return new CS.ShallowCopyArray(expr).r(expr.raw + op).p(line, column, offset)
case '++': return new CS.PostIncrementOp(expr).r(expr.raw + op).p(line, column, offset)
case '--': return new CS.PostDecrementOp(expr).r(expr.raw + op).p(line, column, offset)
}
}, expr, ops);
}
leftHandSideExpression = callExpression / newExpression
argumentList
= soaked:"?"? "(" ws0:_ a:argumentListContents? ws1:_ ")" {
return 0,
{ op: soaked ? CS.SoakedFunctionApplication : CS.FunctionApplication
, operands: [a ? a.list : []]
, raw: '(' + ws0 + (a ? a.raw : '') + ws1 + ')'
, line: line
, column: column
, offset: offset
};
}
argumentListContents
= e:argument es:(_ ("," / TERMINATOR) _ argument)* t:("," / TERMINATOR)? {
var raw = e.raw + es.map(function(e){ return e[0] + e[1] + e[2] + e[3].raw; }).join('') + t;
return {list: [e].concat(es.map(function(e){ return e[3]; })), raw: raw};
}
/ t0:TERMINDENT a:argumentListContents d:DEDENT t1:TERMINATOR? {
return {list: a.list, raw: t0 + a.raw + d + t1};
}
argument
= spread
/ expression
secondaryArgumentList
= ws0:__ !([+-/] __) e:secondaryArgument es:(_ "," _ TERMINATOR? _ secondaryArgument)* obj:(","? TERMINDENT implicitObjectLiteral DEDENT)? {
var raw = ws0 + e.raw + es.map(function(e){ return e[0] + ',' + e[2] + e[3] + e[4] + e[5].raw; }).join('') + (obj ? obj[0] + obj[1] + obj[2].raw + obj[3] : '');
es = [e].concat(es.map(function(e){ return e[5]; }));
if(obj) es.push(obj[2]);
return {list: es, raw: raw};
}
/ t:TERMINDENT o:implicitObjectLiteral d:DEDENT {
return {list: [o], raw: t + o.raw + d};
}
secondaryArgument
= spread
/ secondaryExpression
callExpression
= fn:memberExpression accesses:(argumentList / MemberAccessOps)* secondaryArgs:("?"? secondaryArgumentList)? {
if(accesses) fn = createMemberExpression(fn, accesses);
var soaked, secondaryCtor;
if(secondaryArgs) {
soaked = secondaryArgs[0];
secondaryCtor = soaked ? CS.SoakedFunctionApplication : CS.FunctionApplication;
fn = new secondaryCtor(fn, secondaryArgs[1].list).r(fn.raw + secondaryArgs[1].raw).p(line, column, offset);
}
return fn;
}
newExpression
= memberExpression
/ NEW ws:__ e:(expressionworthy / newExpression / prefixExpression) {
return new CS.NewOp(e, []).r('new' + ws + e.raw).p(line, column, offset);
}
memberExpression
= e:
( primaryExpression
/ NEW ws0:__ e:memberExpression args:argumentList { return new CS.NewOp(e, args.operands[0]).r('new' + ws0 + e + args.raw).p(line, column, offset); }
) accesses:MemberAccessOps* {
return createMemberExpression(e, accesses || []);
}
/ NEW ws0:__ e:memberExpression args:secondaryArgumentList {
var raw = 'new' + ws0 + e.raw + args.raw;
return new CS.NewOp(e, args.list).r(raw).p(line, column, offset);
}
memberAccess
= e:( primaryExpression
/ NEW ws0:__ e:memberExpression args:argumentList { return new CS.NewOp(e, args.operands[0]).r('new' + ws0 + e + args.raw).p(line, column, offset); }
) accesses:(argumentList MemberAccessOps / MemberAccessOps)+ {
var acc = foldl(function(memo, a){ return memo.concat(a); }, [], accesses);
return createMemberExpression(e, acc);
}
MemberNames
= identifierName
MemberAccessOps
= ws0:TERMINATOR? ws1:_ "." ws2:TERMINATOR? ws3:_ e:MemberNames { return {op: CS.MemberAccessOp, operands: [e], raw: ws0 + ws1 + '.' + ws2 + ws3 + e, line: line, column: column, offset: offset}; }
/ "?." ws:_ e:MemberNames { return {op: CS.SoakedMemberAccessOp, operands: [e], raw: '?.' + ws + e, line: line, column: column, offset: offset}; }
/ "[" ws0:_ e:expression ws1:_ "]" { return {op: CS.DynamicMemberAccessOp, operands: [e], raw: '[' + ws0 + e + ws1 + ']', line: line, column: column, offset: offset}; }
/ "?[" ws0:_ e:expression ws1:_ "]" { return {op: CS.SoakedDynamicMemberAccessOp, operands: [e], raw: '?[' + ws0 + e + ws1 + ']', line: line, column: column, offset: offset}; }
/ "::" ws:_ e:MemberNames { return {op: CS.ProtoMemberAccessOp, operands: [e], raw: '::' + ws + e, line: line, column: column, offset: offset}; }
/ "::[" ws0:_ e:expression ws1:_ "]" { return {op: CS.DynamicProtoMemberAccessOp, operands: [e], raw: '::[' + ws0 + e + ws1 + ']', line: line, column: column, offset: offset}; }
/ "?::" ws:_ e:MemberNames { return {op: CS.SoakedProtoMemberAccessOp, operands: [e], raw: '?::' + ws + e, line: line, column: column, offset: offset}; }
/ "?::[" ws0:_ e:expression ws1:_ "]" { return {op: CS.SoakedDynamicProtoMemberAccessOp, operands: [e], raw: '?::[' + ws0 + e + ws1 + ']', line: line, column: column, offset: offset}; }
/ "[" ws0:_ maybeLeft:(assignmentExpression _)? ".." exclusive:"."? ws1:_ maybeRight:(assignmentExpression _)? "]" {
var left = maybeLeft ? maybeLeft[0] : null,
right = maybeRight ? maybeRight[0] : null;
var raw = '[' + ws0 + (left ? left.raw + maybeLeft[1] : '') + '..' + exclusive +
ws1 + (right ? right.raw + maybeRight[1] : '') + ']';
return {op: CS.Slice, operands: [!exclusive, left, right], raw: raw, line: line, column: column, offset: offset};
}
primaryExpression
= macro
/ Numbers
/ bool
/ null
/ undefined
/ contextVar
/ r:(THIS / "@") { return (new CS.This).r(r).p(line, column, offset); }
/ identifier
/ range
/ arrayLiteral
/ objectLiteral
/ interpolation
/ JSLiteral
/ string
/ regexp
/ "(" t0:TERMINDENT e:expression d:DEDENT t1:TERMINATOR? ")" {
e = e.clone();
e.raw = '(' + t0 + e.raw + d + t1 + ')';
return e;
}
/ "(" ws0:_ e:expression ws1:_ t:TERMINATOR? ws2:_ ")" {
e = e.clone();
e.raw = '(' + ws0 + e.raw + ws1 + t + ws2 + ')';
return e;
}
contextVar
= "@" m:MemberNames {
return new CS.MemberAccessOp((new CS.This).r("@").p(line, column, offset), m).r("@" + m).p(line, column, offset);
}
JSLiteral
= "`" data:[^`]* "`" {
data = data.join('');
return new CS.JavaScript(data).r('`' + data + '`').p(line, column, offset);
}
spread
= e:postfixExpression "..." {
return new CS.Spread(e).r(e.raw + "...").p(line, column, offset);
}
conditional
= kw:(IF / UNLESS) ws0:_ cond:assignmentExpression body:conditionalBody elseClause:elseClause? {
var raw = kw + ws0 + cond.raw + body.raw + (elseClause ? elseClause.raw : '');
var constructor = kw == 'unless' ? CS.NegatedConditional : CS.Conditional;
if(kw == 'unless') cond = new CS.LogicalNotOp(cond).g();
var elseBlock = elseClause ? elseClause.block : null;
return new constructor(cond, body.block, elseBlock).r(raw).p(line, column, offset);
}
conditionalBody
= ws:_ t:TERMINDENT b:block d:DEDENT { return {block: b, raw: t + b.raw + d}; }
/ t:TERMINATOR? ws0:_ THEN ws1:_ s:statement {
return {block: s, raw: ws0 + t + 'then' + ws1 + s.raw};
}
/ ws:_ THEN {
return {block: null, raw: ws + 'then'};
}
elseClause = ws0:_ term:TERMINATOR? ws1:_ ELSE b:elseBody { return {block: b.block, raw: ws0 + term + ws1 + 'else' + b.raw}; }
elseBody = functionBody
while
= kw:(WHILE / UNTIL) ws:_ cond:assignmentExpression body:whileBody {
var raw = kw + ws + cond.raw + body.raw;
var constructor = kw == 'until' ? CS.NegatedWhile : CS.While;
if(kw == 'until') cond = new CS.LogicalNotOp(cond).g();
return new constructor(cond, body.block).r(raw).p(line, column, offset);
}
whileBody = conditionalBody
loop
= LOOP body:whileBody {
return new CS.Loop(body.block).r('loop' + body.raw).p(line, column, offset);
}
try
= TRY body:tryBody c:catchClause? f:finallyClause? {
var raw = 'try' + body.block + (c ? c.raw : '') + (f ? f.raw : '');
return new CS.Try(body.block, c ? c.assignee : null, c ? c.block : null, f ? f.block : null).r(raw).p(line, column, offset);
}
tryBody = functionBody / conditionalBody
catchClause
= t:TERMINATOR? ws0:_ CATCH ws1:_ e:Assignable body:conditionalBody {
return {block: body.block, assignee: e, raw: t + ws0 + 'catch' + ws1 + e.raw + body.raw};
}
finallyClause
= t:TERMINATOR? ws:_ FINALLY body:tryBody {
return {block: body.block, raw: t + ws + 'finally' + body.raw};
}
class
= CLASS name:(_ Assignable)? parent:(_ EXTENDS _ extendee)? body:classBody {
var ctor = null;
var raw = 'class' + (name ? name[0] + name[1].raw : '') +
(parent ? parent[0] + 'parent' + parent[2] + parent[3].raw : '') +
body.raw;
name = name ? name[1] : null;
parent = parent ? parent[3] : null;
var boundMembers = [];
var stmts = body.block != null ? body.block.statements || [body.block] : [];
for(var i = 0, l = stmts.length; i < l; ++i) {
var m = stmts[i];
if(m.instanceof(CS.Constructor)) {
ctor = m;
} else if(m.instanceof(CS.ClassProtoAssignOp) && m.expression.instanceof(CS.BoundFunction)) {
boundMembers.push(m);
}
}
return new CS.Class(name, parent, ctor, body.block, boundMembers).r(raw).p(line, column, offset);
}
extendee
= expressionworthy
// don't match a CallExpression
/ !(memberExpression (MemberAccessOps / argumentList)* TERMINDENT implicitObjectLiteralMember) a:assignmentExpression { return a; }
// or match a CallExpression that forbids implicit object literals
/ fn:memberExpression accesses:(argumentList (MemberAccessOps / argumentList)*)? {
if(accesses)
fn = createMemberExpression(fn, [accesses[0]].concat(accesses[1] || []));
return fn;
}
classBody
= ws:_ t:TERMINDENT b:classBlock d:DEDENT { return {block: b, raw: ws + t + b.raw + d}; }
/ ws0:_ t:THEN ws1:_ s:classStatement {
return {block: s, raw: ws0 + t + ws1 + s.raw};
}
/ all:(_ THEN)? {
return {block: null, raw: all ? all[0] + all[1] : ''};
}
classBlock
= s:classStatement ss:(_ TERMINATOR _ classStatement)* term:TERMINATOR? {
var raw = s.raw + ss.map(function(s){ return s[0] + s[1] + s[2] + s[3].raw; }).join('') + term;
return new CS.Block([s].concat(ss.map(function(s){ return s[3]; }))).r(raw).p(line, column, offset);
}
classStatement
= classProtoAssignment
/ staticAssignment
/ constructor
/ expression
constructor
= key:ObjectInitialiserKeys ws0:_ ":" ws1:_ e:
( t:TERMINDENT e:expression d:DEDENT { return {raw: t + e.raw + d, expr: e}; }
/ t:TERMINATOR? ws1:_ e:expression { return {raw: t + ws1 + e.raw, expr: e}; }
) {
if(!key.instanceof(CS.String, CS.Identifier) || key.data !== 'constructor') return null;
var raw = key.raw + ws0 + ":" + ws1 + e.raw;
e = e.expr;
if(e.instanceof(CS.BoundFunction))
e = new CS.Function(e.parameters, e.block).r(e.raw).p(e.line, e.column);
return new CS.Constructor(e).r(raw).p(line, column, offset);
}
staticAssignment
= key:contextVar ws0:_ ":" ws1:_ e:expression {
var raw = key.raw + ws0 + ":" + ws1 + e.raw;
return new CS.AssignOp(key, e).r(raw).p(line, column, offset);
}
classProtoAssignment
= key:ObjectInitialiserKeys ws0:_ ":" ws1:_ e:
( t:TERMINDENT e:expression d:DEDENT { return {raw: t + e.raw + d, expr: e}; }
/ t:TERMINATOR? ws1:_ e:expression { return {raw: t + ws1 + e.raw, expr: e}; }
) {
if(key.data === 'constructor') return null;
var raw = key.raw + ws0 + ":" + ws1 + e.raw;
return new CS.ClassProtoAssignOp(key, e.expr).r(raw).p(line, column, offset);
}
forBody = conditionalBody
forOf
= FOR ws0:_ own:(OWN _)? key:Assignable ws1:_ maybeVal:("," _ Assignable _)? OF ws2:_ obj:assignmentExpression ws3:_ maybeFilter:(WHEN _ assignmentExpression _)? body:forBody {
var raw = 'for' + ws0 + (own ? 'own' + own[1] : '') + key.raw + ws1 +
(maybeVal ? ',' + maybeVal[1] + maybeVal[2].raw + maybeVal[3] : '') +
'of' + ws2 + obj.raw + ws3 +
(maybeFilter ? 'when' + maybeFilter[1] + maybeFilter[2].raw + maybeFilter[3] : '') +
body.raw;
var val = maybeVal ? maybeVal[2] : null;
var filter = maybeFilter ? maybeFilter[2] : null;
return new CS.ForOf(!!own, key, val, obj, filter, body.block).r(raw).p(line, column, offset);
}
forIn
= FOR ws0:_ val:Assignable ws1:_ maybeKey:("," _ Assignable _)? IN ws2:_ list:assignmentExpression ws3:_ maybeStep:(BY _ assignmentExpression _)? maybeFilter:(WHEN _ assignmentExpression _)? body:forBody {
var raw = 'for' + ws0 + val.raw + ws1 +
(maybeKey ? ',' + maybeKey[1] + maybeKey[2].raw + maybeKey[3] : '') +
'in' + ws2 + list.raw + ws3 +
(maybeStep ? 'by' + maybeStep[1] + maybeStep[2].raw + maybeStep[3] : '') +
(maybeFilter ? 'when' + maybeFilter[1] + maybeFilter[2].raw + maybeFilter[3] : '') +
body.raw;
var key = maybeKey ? maybeKey[2] : null;
var step = maybeStep ? maybeStep[2] : new CS.Int(1).r('1').g();
var filter = maybeFilter ? maybeFilter[2] : null;
return new CS.ForIn(val, key, list, step, filter, body.block).r(raw).p(line, column, offset);
}
switch
= SWITCH ws:_ e:(expressionworthy / assignmentExpression)? body:switchBody {
var raw = 'switch' + ws + (e ? e.raw : '') + body.raw;
return new CS.Switch(e || null, body.cases, body['else'] || null).r(raw).p(line, column, offset);
}
switchBody
= ws:_ t:TERMINDENT b:switchBlock d:DEDENT { return {cases: b.cases, 'else': b['else'], raw: ws + t + b.raw + d}; }
/ ws0:_ t:THEN ws1:_ c:case { return {cases: [c], raw: ws0 + t + ws1 + c.raw}; }
/ ws:_ THEN { return {cases: [], raw: ws + 'then'}; }
switchBlock
= w:case ws:(_ TERMINATOR _ case)* elseClause:(_ TERMINATOR _ elseClause)? term:TERMINATOR? {
var raw = w.raw + ws.map(function(w){ return w[0] + w[1] + w[2] + w[3].raw; }).join('') +
(elseClause ? elseClause[0] + elseClause[1] + elseClause[2] + elseClause[3].raw : '') + term;
var cases = [w].concat(ws.map(function(w){ return w[3]; }));
return {cases: cases, 'else': elseClause ? elseClause[3].block : null, raw: raw};
}
case
= WHEN ws:_ conditions:caseConditions body:caseBody {
var raw = 'when' + ws + conditions.raw + body.raw
return new CS.SwitchCase(conditions.list, body.block).r(raw).p(line, column, offset);
}
caseCondition = assignmentExpression
caseConditions
= c:caseCondition cs:(_ "," _ caseCondition)* {
var raw = c.raw + cs.map(function(c){ return c[0] + c[1] + c[2] + c[3].raw; }).join('');
return {list: [c].concat(cs.map(function(c){ return c[3]; })), raw: raw};
}
caseBody = conditionalBody
functionLiteral
= params:("(" _ (td:TERMINDENT p:parameterList d:DEDENT t:TERMINATOR { return {e: p, raw: td + p.raw + d + t}; } / p:parameterList { return {e: p, raw: p.raw}; })? _ ")" _)? arrow:("->" / "=>") body:functionBody? {
if(!body) body = {block: null, raw: ''};
var raw =
(params ? params[0] + params[1] + (params[2] && params[2].raw) + params[3] + params[4] + params[5] : '') +
arrow + body.raw;
var constructor;
switch(arrow) {
case '->': constructor = CS.Function; break;
case '=>': constructor = CS.BoundFunction; break;
default: throw new Error('parsed function arrow ("' + arrow + '") not associated with a constructor');
}
params = params && params[2] && params[2].e ? params[2].e.list : [];
return new constructor(params, body.block).r(raw).p(line, column, offset);
}
functionBody
= ws:_ t:TERMINDENT b:block d:DEDENT { return {block: b, raw: ws + t + b.raw + d}; }
/ ws:_ s:statement {
return {block: s, raw: ws + s.raw};
}
parameter
= param:Assignable ws0:_ "=" ws1:_ default_:secondaryExpression {
var raw = param.raw + ws0 + '=' + ws1 + default_.raw;
return new CS.DefaultParam(param, default_).r(raw).p(line, column, offset);
}
/ rest
rest
= a:Assignable rest:"..."? {
return (rest ? new CS.Rest(a) : a).r(a.raw + rest).p(line, column, offset);
}
parameterList
= e:parameter es:(_ (c:"," t:TERMINATOR? { return c + t; } / TERMINATOR) _ parameter)* {
var raw = e.raw + es.map(function(e){ return e[0] + e[1] + e[2] + e[3].raw; }).join('');
return {list: [e].concat(es.map(function(e){ return e[3]; })), raw: raw};
}
range
= "[" ws0:_ left:secondaryExpression ws1:_ ".." exclusiveDot:"."? ws2:_ right:secondaryExpression ws3:_ "]" {
var raw = '[' + ws0 + left.raw + ws1 + '..' + exclusiveDot + ws2 + right.raw + ws3 + ']';
var inclusive = !exclusiveDot;
return new CS.Range(inclusive, left, right).r(raw).p(line, column, offset);
}
arrayLiteral
= "[" members:arrayLiteralBody t:TERMINATOR? ws:_ "]" {
var raw = "[" + members.raw + t + ws + "]";
return new CS.ArrayInitialiser(members.list).r(raw).p(line, column, offset);
}
arrayLiteralBody
= t:TERMINDENT members:arrayLiteralMemberList d:DEDENT { return {list: members.list, raw: t + members.raw + d}; }
/ ws:_ members:arrayLiteralMemberList? { return {list: members ? members.list : [], raw: ws + members ? members.raw : ''}; }
arrayLiteralMemberList
= e:arrayLiteralMember ws:_ es:(arrayLiteralMemberSeparator _ arrayLiteralMember _)* trail:arrayLiteralMemberSeparator? {
var raw = e.raw + ws + es.map(function(e){ return e[0] + e[1] + e[2].raw + e[3]; }).join('') + trail;
return {list: [e].concat(es.map(function(e){ return e[2]; })), raw: raw};
}
arrayLiteralMember
= spread
/ expression
/ TERMINDENT o:implicitObjectLiteral DEDENT { return o; }
arrayLiteralMemberSeparator
= t:TERMINATOR ws:_ c:","? { return t + ws + c; }
/ "," t:TERMINATOR? _ { return ',' + t; }
// TODO: fix this:
// d:DEDENT "," t:TERMINDENT { return d + ',' + t; }
objectLiteral
= "{" members:objectLiteralBody t:TERMINATOR? ws:_ "}" {
var raw = '{' + members.raw + t + ws + '}'
return new CS.ObjectInitialiser(members.list).r(raw).p(line, column, offset);
}
objectLiteralBody
= t:TERMINDENT members:objectLiteralMemberList d:DEDENT { return {list: members.list, raw: t + members.raw + d}; }
/ ws:_ members:objectLiteralMemberList? { return {list: members ? members.list : [], raw: ws + members ? members.raw : ''}; }
objectLiteralMemberList
= e:objectLiteralMember ws:_ es:(objectLiteralMemberSeparator _ objectLiteralMember _)* trail:","? {
var raw = e.raw + ws + es.map(function(e){ return e[0] + e[1] + e[2].raw + e[3]; }).join('') + trail;
return {list: [e].concat(es.map(function(e){ return e[2]; })), raw: raw};
}
objectLiteralMemberSeparator = arrayLiteralMemberSeparator
objectLiteralMember
= key:ObjectInitialiserKeys ws0:_ ":" ws1:_ val:expression {
var raw = key.raw + ws0 + ':' + ws1 + val.raw;
return new CS.ObjectInitialiserMember(key, val).r(raw).p(line, column, offset);
}
/ v:contextVar {
var key = new CS.String(v.memberName).r(v.memberName).p(line, column + 1)
return new CS.ObjectInitialiserMember(key, v).r(v.raw).p(line, column, offset);
}
/ v:ObjectInitialiserKeys {
return new CS.ObjectInitialiserMember(v, v).r(v.raw).p(line, column, offset);
}
ObjectInitialiserKeys
= i:identifierName { return new CS.Identifier(i).r(i).p(line, column, offset); }
/ string
/ Numbers
// TODO: complete support for implicit objects
implicitObjectLiteral
= members:implicitObjectLiteralMemberList {
return new CS.ObjectInitialiser(members.list).r(members.raw).p(line, column, offset);
}
implicitObjectLiteralMemberList
= e:implicitObjectLiteralMember es:(implicitObjectLiteralMemberSeparator _ implicitObjectLiteralMember)* {
var raw = e.raw + es.map(function(e){ return e[0] + e[1] + e[2].raw; }).join('');
return {list: [e].concat(es.map(function(e){ return e[2]; })), raw: raw};
}
implicitObjectLiteralMemberSeparator
= TERMINATOR ","? _
/ "," TERMINATOR?
implicitObjectLiteralMember
= key:ObjectInitialiserKeys ws0:_ ":" ws1:_ val:implicitObjectLiteralMemberValue {
return new CS.ObjectInitialiserMember(key, val.value).r(key.raw + ws0 + ':' + ws1 + val.raw).p(line, column, offset);
}
implicitObjectLiteralMemberValue
= e:expression { return {value: e, raw: e.raw}; }
/ i:TERMINDENT o:implicitObjectLiteral d:DEDENT { return {value: o, raw: i + o.raw + d}; }
// TODO: __FILENAME__
macro
= r:"__LINE__" { return new CS.Int(line).r(r).p(line, column, offset); }
/ r:"__DATE__" { return new CS.String(new Date().toDateString().slice(4)).r(r).p(line, column, offset); }
/ r:"__TIME__" { return new CS.String(new Date().toTimeString().slice(0, 8)).r(r).p(line, column, offset); }
/ r:"__DATETIMEMS__" { return new CS.Int(+new Date).r(r).p(line, column, offset); }
bool
= match:(TRUE / YES / ON) { return new CS.Bool(true).r(match).p(line, column, offset); }
/ match:(FALSE / NO / OFF) { return new CS.Bool(false).r(match).p(line, column, offset); }
Numbers
= "0b" bs:bit+ { return new CS.Int(parseInt(bs.join(''), 2)).r("0b" + bs).p(line, column, offset); }
/ "0o" os:octalDigit+ { return new CS.Int(parseInt(os.join(''), 8)).r("0o" + os).p(line, column, offset); }
/ "0x" hs:hexDigit+ { return new CS.Int(parseInt(hs.join(''), 16)).r("0x" + hs).p(line, column, offset); }
/ base:decimal e:[eE] sign:[+-]? exponent:decimal {
var raw = base.raw + e + sign + exponent.raw;
return new CS.Float(parseFloat('' + base.data + e + sign + exponent.data, 10)).r(raw).p(line, column, offset);
}
/ decimal
decimal
// trailing and leading radix points are discouraged anyway
= integral:integer fractional:("." decimalDigit+)? {
if(fractional) fractional = "." + fractional[1].join('');
return fractional
? new CS.Float(parseFloat(integral + fractional, 10)).r(integral + fractional).p(line, column, offset)
: new CS.Int(+integral).r(integral).p(line, column, offset);
}
integer
= "0"
/ a:[1-9] bs:decimalDigit* { return a + (bs ? bs.join('') : ''); }
decimalDigit = [0-9]
hexDigit = [0-9a-fA-F]
octalDigit = [0-7]
bit = [01]
// TODO: raw
string
= "\"\"\"" d:(stringData / "'" / s:("\"" "\""? !"\"") { return s.join(''); })+ "\"\"\"" {
var data = stripLeadingWhitespace(d.join(''));
return new CS.String(data).p(line, column, offset);
}
/ "'''" d:(stringData / "\"" / "#" / s:("'" "'"? !"'") { return s.join(''); })+ "'''" {
var data = stripLeadingWhitespace(d.join(''));
return new CS.String(data).p(line, column, offset);
}
/ "\"" d:(stringData / "'")* "\"" { return new CS.String(d ? d.join('') : '').p(line, column, offset); }
/ "'" d:(stringData / "\"" / "#")* "'" { return new CS.String(d ? d.join('') : '').p(line, column, offset); }
stringData
= [^"'\\#]
/ UnicodeEscapeSequence
/ "\\x" h0:hexDigit h1:hexDigit { return String.fromCharCode(parseInt(h0 + h1, 16)); }
/ "\\0" !decimalDigit { return '\0'; }
/ "\\0" &decimalDigit { throw new SyntaxError(['string data'], 'octal escape sequence', offset, line, column); }
/ "\\b" { return '\b'; }
/ "\\t" { return '\t'; }
/ "\\n" { return '\n'; }
/ "\\v" { return '\v'; }
/ "\\f" { return '\f'; }
/ "\\r" { return '\r'; }
/ "\\" c:. { return c; }
/ c:"#" !"{" { return c; }
// TODO: raw
interpolation
= "\"\"\"" es:
( d:(stringData / "'" / s:("\"" "\""? !"\"") { return s.join(''); })+ { return new CS.String(d.join('')).p(line, column, offset); }
/ "#{" _ e:expression _ "}" { return e; }
)+ "\"\"\"" {
return createInterpolation(es).p(line, column, offset);
}
/ "\"" es:
( d:(stringData / "'")+ { return new CS.String(d.join('')).p(line, column, offset); }
/ "#{" _ e:expression _ "}" { return e; }
)+ "\"" {
return createInterpolation(es).p(line, column, offset);
}
// TODO: raw
regexp
= "///" es:
( [ \r\n]+ { return [new CS.String('').g().p(line, column, offset)]; }
/ s:[^\\/#[ \r\n]+ { return [new CS.String(s.join('')).g().p(line, column, offset)]; }
/ hereregexpData
)+ "///" flags:[gimy]* {
if(!isValidRegExpFlags(flags))
throw new SyntaxError(['regular expression flags'], 'regular expression flags', offset, line, column);
if(!flags) flags = [];
var interp = createInterpolation(foldl(function(memo, e){ return memo.concat(e); }, [], es));
if(interp instanceof CS.String) return new CS.RegExp(interp.data, flags).p(line, column, offset);
return new CS.HeregExp(interp, flags).p(line, column, offset);
}
/ "/" d:(regexpData / d:[^/\\[\n]+ { return d.join(''); })* "/" flags:[gimy]* {
if(!isValidRegExpFlags(flags))
throw new SyntaxError(['regular expression flags'], 'regular expression flags', offset, line, column);
return new CS.RegExp(d ? d.join('') : '', flags || []).p(line, column, offset);;
}
regexpData
= "[" d:([^\\\]\n] / regexpData)* "]" { return "[" + d.join('') + "]"; }
/ "\\" c:. { return '\\' + c; }
hereregexpData
= "[" d:
( h:hereregexpData { return h[0]; }
/ s:[^\\/\]] { return new CS.String(s).p(line, column, offset); }
)* "]" {
return [new CS.String("[").p(line, column, offset)].concat(d || []).concat([new CS.String("]").p(line, column, offset)]);
}
/ "\\" c:. { return [new CS.String('\\' + c).p(line, column, offset)]; }
/ s:("/" "/"? !"/") { return [new CS.String(s.join('')).p(line, column, offset)]; }
/ c:"#" !"{" { return [new CS.String(c).p(line, column, offset)]; }
/ "#{" _ e:expression _ "}" { return [e]; }
throw
= THROW ws:_ e:secondaryExpression {
return new CS.Throw(e).r('throw' + ws + e.raw).p(line, column, offset);
}
return
= RETURN maybeExpression:(__ secondaryExpression)? {
var ws = maybeExpression ? maybeExpression[0] : '',
e = maybeExpression ? maybeExpression[1] : null;
return new CS.Return(e).r('return' + ws + (e ? e.raw : '')).p(line, column, offset);
}
continue = CONTINUE { return (new CS.Continue).r('continue').p(line, column, offset); }
break = BREAK { return (new CS.Break).r('break').p(line, column, offset); }
debugger = DEBUGGER { return (new CS.Debugger).r('debugger').p(line, column, offset); }
undefined = UNDEFINED { return (new CS.Undefined).r('undefined').p(line, column, offset); }
null = NULL { return (new CS.Null).r('null').p(line, column, offset); }
unassignable = ("arguments" / "eval") !identifierPart
CompoundAssignable
= memberAccess
/ !unassignable i:identifier { return i; }
/ contextVar
ExistsAssignable = CompoundAssignable
Assignable
= memberAccess
/ !unassignable i:identifier { return i; }
/ contextVar
/ positionalDestructuring
/ namedDestructuring
positionalDestructuring
= "[" members:positionalDestructuringBody t:TERMINATOR? ws:_ "]" {
var raw = '{' + members.raw + t + ws + '}'
return new CS.ArrayInitialiser(members.list).r(raw).p(line, column, offset);
}
positionalDestructuringBody
= t:TERMINDENT members:positionalDestructuringMemberList d:DEDENT { return {list: members.list, raw: t + members.raw + d}; }
/ ws:_ members:positionalDestructuringMemberList? { return {list: members ? members.list : [], raw: ws + members ? members.raw : ''}; }
positionalDestructuringMemberList
= e:positionalDestructuringMember es:(_ "," _ positionalDestructuringMember)* {
var raw = e.raw + es.map(function(e){ return e[0] + e[1] + e[2] + e[3].raw; }).join('');
return {list: [e].concat(es.map(function(e){ return e[3]; })), raw: raw};
}
positionalDestructuringMember = rest / Assignable
namedDestructuring
= "{" members:namedDestructuringBody t:TERMINATOR? ws:_ "}" {
var raw = '{' + members.raw + t + ws + '}'
return new CS.ObjectInitialiser(members.list).r(raw).p(line, column, offset);
}
namedDestructuringBody
= t:TERMINDENT members:namedDestructuringMemberList d:DEDENT { return {list: members.list, raw: t + members.raw + d}; }
/ ws:_ members:namedDestructuringMemberList? { return {list: members ? members.list : [], raw: ws + members ? members.raw : ''}; }
namedDestructuringMemberList
= e:namedDestructuringMember es:(TERMINATOR? _ ("," / TERMINATOR) TERMINATOR? _ namedDestructuringMember)* {
var raw = e.raw + es.map(function(e){ return e[0] + e[1] + e[2] + e[3] + e[4] + e[5].raw; }).join('');