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UI for debugging Jison grammars (UNMAINTAINED)

Home Page: http://nolanlawson.github.io/jison-debugger

License: Apache License 2.0

HTML 3.80% JavaScript 71.88% CSS 3.84% Shell 0.60% Yacc 19.88%

jison-debugger's Introduction

jison-debugger

Web UI for debugging Jison grammars, written in React.js.

Setup: npm install && bower install

Developing: use gulp watch. This was created with a Yeoman generator.

Recompiling Jison: npm run build-jison. I'm using a special build of Jison for debugging.

Deploying to gh-pages: use npm run deploy. It will build the project and push to the gh-pages branch.

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jison-debugger's Issues

Works in jison-debugger but conflicts are thrown with jison CLI

Hi,
That's a fantastic tool that helps visually understand and test the structure of the grammar. I noticed that in some cases jison-debugger doesn't give the same result as jison CLI-tool.
In sample calculator logic below jison-debugger works just fine and allows me to test the grammar. When I'm trying to generate JS with jison CLI, it fails with conflicts due to ' | number matrixExpression { $$ = 'num * M'; }' line.

I would appreciate if you have any comments. Thank you.

`%lex

%expect 2

/* lexical grammar /
%%
\s+ {/ skip whitespace */}
[0-9]+("."[0-9]+)?\b {return 'NUMBER';}

"" {return '';};
"/" {return '/';}
"-" {return '-';}
"+" {return '+';}
"(" {return '(';}
")" {return ')'}
"{" {return '{';}
"}" {return '}'}
"\left(" {return '(';}
"\right)" {return ')';}
"det" {return 'DET';}

[(([\d[],][^])*)]|[A-F] {return 'MATRIX';}

"\u2A2F" {return 'CROSS_PRODUCT';}
"\u22C5" {return '*';}

"{-1}" {return 'INVERSE';}
"\u2297" {return 'TENSOR_PRODUCT';}
"{T}" {return 'TRANSPOSE';}
"^" {return 'MATRIX_POWER';}

<> {return 'EOF';}
/lex

/* operator precedence/associations */

%left '+' '-' '(' '{'
%left '*' '/'
%right ')' '}'
%right 'DET'
%left 'TENSOR_PRODUCT' 'CROSS_PRODUCT' 'MATRIX_POWER'
%left UMINUS

%start expressions

%% /* language grammar */

expressions:
numbers EOF {return $1;}
| matrixExpression EOF {return $1;}
;

number :
NUMBER { $$ = Number(yytext); }
| '-' number %prec UMINUS { $$ = -$2;}
| '(' number ')' { $$ = $2; }
| number '+' number { $$ = $1 + $3; }
| number '-' number { $$ = $1 - $3; }
| number '*' number { $$ = $1 * $3; }
| number '/' number { $$ = $1 / $3; }
| DET '(' matrixExpression ')' { $$ = '999' }
;

matrixExpression :

MATRIX { $$ = "matrix"; }
| '(' matrixExpression ')' { $$ = $2; }
| matrixExpression '' matrixExpression { $$ = 'M multiply M'; }
| matrixExpression '+' matrixExpression { $$ = 'M + M'; }
| matrixExpression '-' matrixExpression { $$ = 'M - M'; }
| matrixExpression '' number { $$ = 'M * num'; }
| number '*' matrixExpression { $$ = 'num * M'; }
| number matrixExpression { $$ = 'num * M'; }
| matrixExpression MATRIX_POWER '{' number '}' { $$ = 'M pow ' + $4 }
| matrixExpression MATRIX_POWER TRANSPOSE { $$ = 'M transpose' }
| matrixExpression MATRIX_POWER INVERSE { $$ = 'M inverse' }
| matrixExpression CROSS_PRODUCT matrixExpression { $$ = 'M cross prod M' }
| matrixExpression TENSOR_PRODUCT matrixExpression { $$ = 'M tensor prod M' }
;
`

Feature request : permalinks

For sharing, add a permalink button. most playgrounds do the following:

encode the sources or turn them into Base64
put them in the url as params/hashes

When called

if called with params
decode params
put the sources in place
compile

Thanks :D

Zoomable SVGs

With a sufficient complex grammar, the parse tree can be so large that it's hard to read the text or see how the nodes are related. It gets scaled down to a really small size.

Since these are SVGs, it seems like there ought to be an easy way to make the "fullscreen" view zoomable. But I haven't figured out how to do so yet.

Error on CoffeeScript’s grammar

I took the grammer JSON object exported by CoffeeScript’s grammar.coffee, ran it through json2jison to get a grammar text file, and pasted that grammar text file into your app. I got the error:

Object prototype may only be an Object or null: undefined

Here is the grammar text file:

%left POST_IF
%right IF ELSE FOR WHILE UNTIL LOOP SUPER CLASS IMPORT EXPORT
%right FORIN FOROF FORFROM BY WHEN
%right '=' ':' COMPOUND_ASSIGN RETURN THROW EXTENDS
%right YIELD
%nonassoc INDENT OUTDENT
%left BIN?
%left '||'
%left '&&'
%left '|'
%left '^'
%left '&'
%left COMPARE
%left RELATION
%left SHIFT
%left '+' '-'
%left MATH
%right UNARY_MATH
%right '**'
%right AWAIT
%right UNARY
%left '?'
%nonassoc '++' '--'
%left CALL_START CALL_END
%left '.' '?.' '::' '?::'

%%

Root
    : 
        {return $$ = yy.addLocationDataFn(@1, @1)(new yy.Block);}
    | Body
        {return $$ = $1;}
    ;

Body
    : Line
        {$$ = yy.addLocationDataFn(@1, @1)(yy.Block.wrap([$1]));}
    | Body TERMINATOR Line
        {$$ = yy.addLocationDataFn(@1, @3)($1.push($3));}
    | Body TERMINATOR
        {$$ = $1;}
    ;

Line
    : Expression
        {$$ = $1;}
    | Statement
        {$$ = $1;}
    | FuncDirective
        {$$ = $1;}
    ;

FuncDirective
    : YieldReturn
        {$$ = $1;}
    | AwaitReturn
        {$$ = $1;}
    ;

Statement
    : Return
        {$$ = $1;}
    | Comment
        {$$ = $1;}
    | STATEMENT
        {$$ = yy.addLocationDataFn(@1, @1)(new yy.StatementLiteral($1));}
    | Import
        {$$ = $1;}
    | Export
        {$$ = $1;}
    ;

Expression
    : Value
        {$$ = $1;}
    | Invocation
        {$$ = $1;}
    | Code
        {$$ = $1;}
    | Operation
        {$$ = $1;}
    | Assign
        {$$ = $1;}
    | If
        {$$ = $1;}
    | Try
        {$$ = $1;}
    | While
        {$$ = $1;}
    | For
        {$$ = $1;}
    | Switch
        {$$ = $1;}
    | Class
        {$$ = $1;}
    | Throw
        {$$ = $1;}
    | Yield
        {$$ = $1;}
    ;

Yield
    : YIELD
        {$$ = yy.addLocationDataFn(@1, @1)(new yy.Op($1, new yy.Value(new yy.Literal(''))));}
    | YIELD Expression
        {$$ = yy.addLocationDataFn(@1, @2)(new yy.Op($1, $2));}
    | YIELD FROM Expression
        {$$ = yy.addLocationDataFn(@1, @3)(new yy.Op($1.concat($2), $3));}
    ;

Block
    : INDENT OUTDENT
        {$$ = yy.addLocationDataFn(@1, @2)(new yy.Block);}
    | INDENT Body OUTDENT
        {$$ = yy.addLocationDataFn(@1, @3)($2);}
    ;

Identifier
    : IDENTIFIER
        {$$ = yy.addLocationDataFn(@1, @1)(new yy.IdentifierLiteral($1));}
    ;

Property
    : PROPERTY
        {$$ = yy.addLocationDataFn(@1, @1)(new yy.PropertyName($1));}
    ;

AlphaNumeric
    : NUMBER
        {$$ = yy.addLocationDataFn(@1, @1)(new yy.NumberLiteral($1));}
    | String
        {$$ = $1;}
    ;

String
    : STRING
        {$$ = yy.addLocationDataFn(@1, @1)(new yy.StringLiteral($1));}
    | STRING_START Body STRING_END
        {$$ = yy.addLocationDataFn(@1, @3)(new yy.StringWithInterpolations($2));}
    ;

Regex
    : REGEX
        {$$ = yy.addLocationDataFn(@1, @1)(new yy.RegexLiteral($1));}
    | REGEX_START Invocation REGEX_END
        {$$ = yy.addLocationDataFn(@1, @3)(new yy.RegexWithInterpolations($2.args));}
    ;

Literal
    : AlphaNumeric
        {$$ = $1;}
    | JS
        {$$ = yy.addLocationDataFn(@1, @1)(new yy.PassthroughLiteral($1));}
    | Regex
        {$$ = $1;}
    | UNDEFINED
        {$$ = yy.addLocationDataFn(@1, @1)(new yy.UndefinedLiteral);}
    | NULL
        {$$ = yy.addLocationDataFn(@1, @1)(new yy.NullLiteral);}
    | BOOL
        {$$ = yy.addLocationDataFn(@1, @1)(new yy.BooleanLiteral($1));}
    | INFINITY
        {$$ = yy.addLocationDataFn(@1, @1)(new yy.InfinityLiteral($1));}
    | NAN
        {$$ = yy.addLocationDataFn(@1, @1)(new yy.NaNLiteral);}
    ;

Assign
    : Assignable '=' Expression
        {$$ = yy.addLocationDataFn(@1, @3)(new yy.Assign($1, $3));}
    | Assignable '=' TERMINATOR Expression
        {$$ = yy.addLocationDataFn(@1, @4)(new yy.Assign($1, $4));}
    | Assignable '=' INDENT Expression OUTDENT
        {$$ = yy.addLocationDataFn(@1, @5)(new yy.Assign($1, $4));}
    ;

AssignObj
    : ObjAssignable
        {$$ = yy.addLocationDataFn(@1, @1)(new yy.Value($1));}
    | ObjAssignable ':' Expression
        {$$ = yy.addLocationDataFn(@1, @3)(new yy.Assign(yy.addLocationDataFn(@1)(new yy.Value($1)), $3, 'object', {
          operatorToken: yy.addLocationDataFn(@2)(new yy.Literal($2))
        }));}
    | ObjAssignable ':' INDENT Expression OUTDENT
        {$$ = yy.addLocationDataFn(@1, @5)(new yy.Assign(yy.addLocationDataFn(@1)(new yy.Value($1)), $4, 'object', {
          operatorToken: yy.addLocationDataFn(@2)(new yy.Literal($2))
        }));}
    | SimpleObjAssignable '=' Expression
        {$$ = yy.addLocationDataFn(@1, @3)(new yy.Assign(yy.addLocationDataFn(@1)(new yy.Value($1)), $3, null, {
          operatorToken: yy.addLocationDataFn(@2)(new yy.Literal($2))
        }));}
    | SimpleObjAssignable '=' INDENT Expression OUTDENT
        {$$ = yy.addLocationDataFn(@1, @5)(new yy.Assign(yy.addLocationDataFn(@1)(new yy.Value($1)), $4, null, {
          operatorToken: yy.addLocationDataFn(@2)(new yy.Literal($2))
        }));}
    | Comment
        {$$ = $1;}
    ;

SimpleObjAssignable
    : Identifier
        {$$ = $1;}
    | Property
        {$$ = $1;}
    | ThisProperty
        {$$ = $1;}
    ;

ObjAssignable
    : SimpleObjAssignable
        {$$ = $1;}
    | AlphaNumeric
        {$$ = $1;}
    ;

Return
    : RETURN Expression
        {$$ = yy.addLocationDataFn(@1, @2)(new yy.Return($2));}
    | RETURN
        {$$ = yy.addLocationDataFn(@1, @1)(new yy.Return);}
    ;

YieldReturn
    : YIELD RETURN Expression
        {$$ = yy.addLocationDataFn(@1, @3)(new yy.YieldReturn($3));}
    | YIELD RETURN
        {$$ = yy.addLocationDataFn(@1, @2)(new yy.YieldReturn);}
    ;

AwaitReturn
    : AWAIT RETURN Expression
        {$$ = yy.addLocationDataFn(@1, @3)(new yy.AwaitReturn($3));}
    | AWAIT RETURN
        {$$ = yy.addLocationDataFn(@1, @2)(new yy.AwaitReturn);}
    ;

Comment
    : HERECOMMENT
        {$$ = yy.addLocationDataFn(@1, @1)(new yy.Comment($1));}
    ;

Code
    : PARAM_START ParamList PARAM_END FuncGlyph Block
        {$$ = yy.addLocationDataFn(@1, @5)(new yy.Code($2, $5, $4));}
    | FuncGlyph Block
        {$$ = yy.addLocationDataFn(@1, @2)(new yy.Code([], $2, $1));}
    ;

FuncGlyph
    : '->'
        {$$ = yy.addLocationDataFn(@1, @1)('func');}
    | '=>'
        {$$ = yy.addLocationDataFn(@1, @1)('boundfunc');}
    ;

OptComma
    : 
        {$$ = $1;}
    | ','
        {$$ = $1;}
    ;

ParamList
    : 
        {$$ = yy.addLocationDataFn(@1, @1)([]);}
    | Param
        {$$ = yy.addLocationDataFn(@1, @1)([$1]);}
    | ParamList ',' Param
        {$$ = yy.addLocationDataFn(@1, @3)($1.concat($3));}
    | ParamList OptComma TERMINATOR Param
        {$$ = yy.addLocationDataFn(@1, @4)($1.concat($4));}
    | ParamList OptComma INDENT ParamList OptComma OUTDENT
        {$$ = yy.addLocationDataFn(@1, @6)($1.concat($4));}
    ;

Param
    : ParamVar
        {$$ = yy.addLocationDataFn(@1, @1)(new yy.Param($1));}
    | ParamVar '...'
        {$$ = yy.addLocationDataFn(@1, @2)(new yy.Param($1, null, true));}
    | ParamVar '=' Expression
        {$$ = yy.addLocationDataFn(@1, @3)(new yy.Param($1, $3));}
    | '...'
        {$$ = yy.addLocationDataFn(@1, @1)(new yy.Expansion);}
    ;

ParamVar
    : Identifier
        {$$ = $1;}
    | ThisProperty
        {$$ = $1;}
    | Array
        {$$ = $1;}
    | Object
        {$$ = $1;}
    ;

Splat
    : Expression '...'
        {$$ = yy.addLocationDataFn(@1, @2)(new yy.Splat($1));}
    ;

SimpleAssignable
    : Identifier
        {$$ = yy.addLocationDataFn(@1, @1)(new yy.Value($1));}
    | Value Accessor
        {$$ = yy.addLocationDataFn(@1, @2)($1.add($2));}
    | Invocation Accessor
        {$$ = yy.addLocationDataFn(@1, @2)(new yy.Value($1, [].concat($2)));}
    | ThisProperty
        {$$ = $1;}
    ;

Assignable
    : SimpleAssignable
        {$$ = $1;}
    | Array
        {$$ = yy.addLocationDataFn(@1, @1)(new yy.Value($1));}
    | Object
        {$$ = yy.addLocationDataFn(@1, @1)(new yy.Value($1));}
    ;

Value
    : Assignable
        {$$ = $1;}
    | Literal
        {$$ = yy.addLocationDataFn(@1, @1)(new yy.Value($1));}
    | Parenthetical
        {$$ = yy.addLocationDataFn(@1, @1)(new yy.Value($1));}
    | Range
        {$$ = yy.addLocationDataFn(@1, @1)(new yy.Value($1));}
    | This
        {$$ = $1;}
    | Super
        {$$ = $1;}
    ;

Super
    : SUPER '.' Property
        {$$ = yy.addLocationDataFn(@1, @3)(new yy.Super(yy.addLocationDataFn(@3)(new yy.Access($3))));}
    | SUPER INDEX_START Expression INDEX_END
        {$$ = yy.addLocationDataFn(@1, @4)(new yy.Super(yy.addLocationDataFn(@3)(new yy.Index($3))));}
    ;

Accessor
    : '.' Property
        {$$ = yy.addLocationDataFn(@1, @2)(new yy.Access($2));}
    | '?.' Property
        {$$ = yy.addLocationDataFn(@1, @2)(new yy.Access($2, 'soak'));}
    | '::' Property
        {$$ = yy.addLocationDataFn(@1, @2)([yy.addLocationDataFn(@1)(new yy.Access(new yy.PropertyName('prototype'))), yy.addLocationDataFn(@2)(new yy.Access($2))]);}
    | '?::' Property
        {$$ = yy.addLocationDataFn(@1, @2)([yy.addLocationDataFn(@1)(new yy.Access(new yy.PropertyName('prototype'), 'soak')), yy.addLocationDataFn(@2)(new yy.Access($2))]);}
    | '::'
        {$$ = yy.addLocationDataFn(@1, @1)(new yy.Access(new yy.PropertyName('prototype')));}
    | Index
        {$$ = $1;}
    ;

Index
    : INDEX_START IndexValue INDEX_END
        {$$ = yy.addLocationDataFn(@1, @3)($2);}
    | INDEX_SOAK Index
        {$$ = yy.addLocationDataFn(@1, @2)(yy.extend($2, {
          soak: true
        }));}
    ;

IndexValue
    : Expression
        {$$ = yy.addLocationDataFn(@1, @1)(new yy.Index($1));}
    | Slice
        {$$ = yy.addLocationDataFn(@1, @1)(new yy.Slice($1));}
    ;

Object
    : '{' AssignList OptComma '}'
        {$$ = yy.addLocationDataFn(@1, @4)(new yy.Obj($2, $1.generated));}
    ;

AssignList
    : 
        {$$ = yy.addLocationDataFn(@1, @1)([]);}
    | AssignObj
        {$$ = yy.addLocationDataFn(@1, @1)([$1]);}
    | AssignList ',' AssignObj
        {$$ = yy.addLocationDataFn(@1, @3)($1.concat($3));}
    | AssignList OptComma TERMINATOR AssignObj
        {$$ = yy.addLocationDataFn(@1, @4)($1.concat($4));}
    | AssignList OptComma INDENT AssignList OptComma OUTDENT
        {$$ = yy.addLocationDataFn(@1, @6)($1.concat($4));}
    ;

Class
    : CLASS
        {$$ = yy.addLocationDataFn(@1, @1)(new yy.Class);}
    | CLASS Block
        {$$ = yy.addLocationDataFn(@1, @2)(new yy.Class(null, null, $2));}
    | CLASS EXTENDS Expression
        {$$ = yy.addLocationDataFn(@1, @3)(new yy.Class(null, $3));}
    | CLASS EXTENDS Expression Block
        {$$ = yy.addLocationDataFn(@1, @4)(new yy.Class(null, $3, $4));}
    | CLASS SimpleAssignable
        {$$ = yy.addLocationDataFn(@1, @2)(new yy.Class($2));}
    | CLASS SimpleAssignable Block
        {$$ = yy.addLocationDataFn(@1, @3)(new yy.Class($2, null, $3));}
    | CLASS SimpleAssignable EXTENDS Expression
        {$$ = yy.addLocationDataFn(@1, @4)(new yy.Class($2, $4));}
    | CLASS SimpleAssignable EXTENDS Expression Block
        {$$ = yy.addLocationDataFn(@1, @5)(new yy.Class($2, $4, $5));}
    ;

Import
    : IMPORT String
        {$$ = yy.addLocationDataFn(@1, @2)(new yy.ImportDeclaration(null, $2));}
    | IMPORT ImportDefaultSpecifier FROM String
        {$$ = yy.addLocationDataFn(@1, @4)(new yy.ImportDeclaration(new yy.ImportClause($2, null), $4));}
    | IMPORT ImportNamespaceSpecifier FROM String
        {$$ = yy.addLocationDataFn(@1, @4)(new yy.ImportDeclaration(new yy.ImportClause(null, $2), $4));}
    | IMPORT '{' '}' FROM String
        {$$ = yy.addLocationDataFn(@1, @5)(new yy.ImportDeclaration(new yy.ImportClause(null, new yy.ImportSpecifierList([])), $5));}
    | IMPORT '{' ImportSpecifierList OptComma '}' FROM String
        {$$ = yy.addLocationDataFn(@1, @7)(new yy.ImportDeclaration(new yy.ImportClause(null, new yy.ImportSpecifierList($3)), $7));}
    | IMPORT ImportDefaultSpecifier ',' ImportNamespaceSpecifier FROM String
        {$$ = yy.addLocationDataFn(@1, @6)(new yy.ImportDeclaration(new yy.ImportClause($2, $4), $6));}
    | IMPORT ImportDefaultSpecifier ',' '{' ImportSpecifierList OptComma '}' FROM String
        {$$ = yy.addLocationDataFn(@1, @9)(new yy.ImportDeclaration(new yy.ImportClause($2, new yy.ImportSpecifierList($5)), $9));}
    ;

ImportSpecifierList
    : ImportSpecifier
        {$$ = yy.addLocationDataFn(@1, @1)([$1]);}
    | ImportSpecifierList ',' ImportSpecifier
        {$$ = yy.addLocationDataFn(@1, @3)($1.concat($3));}
    | ImportSpecifierList OptComma TERMINATOR ImportSpecifier
        {$$ = yy.addLocationDataFn(@1, @4)($1.concat($4));}
    | INDENT ImportSpecifierList OptComma OUTDENT
        {$$ = yy.addLocationDataFn(@1, @4)($2);}
    | ImportSpecifierList OptComma INDENT ImportSpecifierList OptComma OUTDENT
        {$$ = yy.addLocationDataFn(@1, @6)($1.concat($4));}
    ;

ImportSpecifier
    : Identifier
        {$$ = yy.addLocationDataFn(@1, @1)(new yy.ImportSpecifier($1));}
    | Identifier AS Identifier
        {$$ = yy.addLocationDataFn(@1, @3)(new yy.ImportSpecifier($1, $3));}
    | DEFAULT
        {$$ = yy.addLocationDataFn(@1, @1)(new yy.ImportSpecifier(new yy.Literal($1)));}
    | DEFAULT AS Identifier
        {$$ = yy.addLocationDataFn(@1, @3)(new yy.ImportSpecifier(new yy.Literal($1), $3));}
    ;

ImportDefaultSpecifier
    : Identifier
        {$$ = yy.addLocationDataFn(@1, @1)(new yy.ImportDefaultSpecifier($1));}
    ;

ImportNamespaceSpecifier
    : IMPORT_ALL AS Identifier
        {$$ = yy.addLocationDataFn(@1, @3)(new yy.ImportNamespaceSpecifier(new yy.Literal($1), $3));}
    ;

Export
    : EXPORT '{' '}'
        {$$ = yy.addLocationDataFn(@1, @3)(new yy.ExportNamedDeclaration(new yy.ExportSpecifierList([])));}
    | EXPORT '{' ExportSpecifierList OptComma '}'
        {$$ = yy.addLocationDataFn(@1, @5)(new yy.ExportNamedDeclaration(new yy.ExportSpecifierList($3)));}
    | EXPORT Class
        {$$ = yy.addLocationDataFn(@1, @2)(new yy.ExportNamedDeclaration($2));}
    | EXPORT Identifier '=' Expression
        {$$ = yy.addLocationDataFn(@1, @4)(new yy.ExportNamedDeclaration(new yy.Assign($2, $4, null, {
          moduleDeclaration: 'export'
        })));}
    | EXPORT Identifier '=' TERMINATOR Expression
        {$$ = yy.addLocationDataFn(@1, @5)(new yy.ExportNamedDeclaration(new yy.Assign($2, $5, null, {
          moduleDeclaration: 'export'
        })));}
    | EXPORT Identifier '=' INDENT Expression OUTDENT
        {$$ = yy.addLocationDataFn(@1, @6)(new yy.ExportNamedDeclaration(new yy.Assign($2, $5, null, {
          moduleDeclaration: 'export'
        })));}
    | EXPORT DEFAULT Expression
        {$$ = yy.addLocationDataFn(@1, @3)(new yy.ExportDefaultDeclaration($3));}
    | EXPORT EXPORT_ALL FROM String
        {$$ = yy.addLocationDataFn(@1, @4)(new yy.ExportAllDeclaration(new yy.Literal($2), $4));}
    | EXPORT '{' ExportSpecifierList OptComma '}' FROM String
        {$$ = yy.addLocationDataFn(@1, @7)(new yy.ExportNamedDeclaration(new yy.ExportSpecifierList($3), $7));}
    ;

ExportSpecifierList
    : ExportSpecifier
        {$$ = yy.addLocationDataFn(@1, @1)([$1]);}
    | ExportSpecifierList ',' ExportSpecifier
        {$$ = yy.addLocationDataFn(@1, @3)($1.concat($3));}
    | ExportSpecifierList OptComma TERMINATOR ExportSpecifier
        {$$ = yy.addLocationDataFn(@1, @4)($1.concat($4));}
    | INDENT ExportSpecifierList OptComma OUTDENT
        {$$ = yy.addLocationDataFn(@1, @4)($2);}
    | ExportSpecifierList OptComma INDENT ExportSpecifierList OptComma OUTDENT
        {$$ = yy.addLocationDataFn(@1, @6)($1.concat($4));}
    ;

ExportSpecifier
    : Identifier
        {$$ = yy.addLocationDataFn(@1, @1)(new yy.ExportSpecifier($1));}
    | Identifier AS Identifier
        {$$ = yy.addLocationDataFn(@1, @3)(new yy.ExportSpecifier($1, $3));}
    | Identifier AS DEFAULT
        {$$ = yy.addLocationDataFn(@1, @3)(new yy.ExportSpecifier($1, new yy.Literal($3)));}
    | DEFAULT
        {$$ = yy.addLocationDataFn(@1, @1)(new yy.ExportSpecifier(new yy.Literal($1)));}
    | DEFAULT AS Identifier
        {$$ = yy.addLocationDataFn(@1, @3)(new yy.ExportSpecifier(new yy.Literal($1), $3));}
    ;

Invocation
    : Value OptFuncExist String
        {$$ = yy.addLocationDataFn(@1, @3)(new yy.TaggedTemplateCall($1, $3, $2));}
    | Value OptFuncExist Arguments
        {$$ = yy.addLocationDataFn(@1, @3)(new yy.Call($1, $3, $2));}
    | Invocation OptFuncExist Arguments
        {$$ = yy.addLocationDataFn(@1, @3)(new yy.Call($1, $3, $2));}
    | SUPER OptFuncExist Arguments
        {$$ = yy.addLocationDataFn(@1, @3)(new yy.SuperCall(yy.addLocationDataFn(@1)(new yy.Super), $3, $2));}
    ;

OptFuncExist
    : 
        {$$ = yy.addLocationDataFn(@1, @1)(false);}
    | FUNC_EXIST
        {$$ = yy.addLocationDataFn(@1, @1)(true);}
    ;

Arguments
    : CALL_START CALL_END
        {$$ = yy.addLocationDataFn(@1, @2)([]);}
    | CALL_START ArgList OptComma CALL_END
        {$$ = yy.addLocationDataFn(@1, @4)($2);}
    ;

This
    : THIS
        {$$ = yy.addLocationDataFn(@1, @1)(new yy.Value(new yy.ThisLiteral));}
    | '@'
        {$$ = yy.addLocationDataFn(@1, @1)(new yy.Value(new yy.ThisLiteral));}
    ;

ThisProperty
    : '@' Property
        {$$ = yy.addLocationDataFn(@1, @2)(new yy.Value(yy.addLocationDataFn(@1)(new yy.ThisLiteral), [yy.addLocationDataFn(@2)(new yy.Access($2))], 'this'));}
    ;

Array
    : '[' ']'
        {$$ = yy.addLocationDataFn(@1, @2)(new yy.Arr([]));}
    | '[' ArgList OptComma ']'
        {$$ = yy.addLocationDataFn(@1, @4)(new yy.Arr($2));}
    ;

RangeDots
    : '..'
        {$$ = yy.addLocationDataFn(@1, @1)('inclusive');}
    | '...'
        {$$ = yy.addLocationDataFn(@1, @1)('exclusive');}
    ;

Range
    : '[' Expression RangeDots Expression ']'
        {$$ = yy.addLocationDataFn(@1, @5)(new yy.Range($2, $4, $3));}
    ;

Slice
    : Expression RangeDots Expression
        {$$ = yy.addLocationDataFn(@1, @3)(new yy.Range($1, $3, $2));}
    | Expression RangeDots
        {$$ = yy.addLocationDataFn(@1, @2)(new yy.Range($1, null, $2));}
    | RangeDots Expression
        {$$ = yy.addLocationDataFn(@1, @2)(new yy.Range(null, $2, $1));}
    | RangeDots
        {$$ = yy.addLocationDataFn(@1, @1)(new yy.Range(null, null, $1));}
    ;

ArgList
    : Arg
        {$$ = yy.addLocationDataFn(@1, @1)([$1]);}
    | ArgList ',' Arg
        {$$ = yy.addLocationDataFn(@1, @3)($1.concat($3));}
    | ArgList OptComma TERMINATOR Arg
        {$$ = yy.addLocationDataFn(@1, @4)($1.concat($4));}
    | INDENT ArgList OptComma OUTDENT
        {$$ = yy.addLocationDataFn(@1, @4)($2);}
    | ArgList OptComma INDENT ArgList OptComma OUTDENT
        {$$ = yy.addLocationDataFn(@1, @6)($1.concat($4));}
    ;

Arg
    : Expression
        {$$ = $1;}
    | Splat
        {$$ = $1;}
    | '...'
        {$$ = yy.addLocationDataFn(@1, @1)(new yy.Expansion);}
    ;

SimpleArgs
    : Expression
        {$$ = $1;}
    | SimpleArgs ',' Expression
        {$$ = yy.addLocationDataFn(@1, @3)([].concat($1, $3));}
    ;

Try
    : TRY Block
        {$$ = yy.addLocationDataFn(@1, @2)(new yy.Try($2));}
    | TRY Block Catch
        {$$ = yy.addLocationDataFn(@1, @3)(new yy.Try($2, $3[0], $3[1]));}
    | TRY Block FINALLY Block
        {$$ = yy.addLocationDataFn(@1, @4)(new yy.Try($2, null, null, $4));}
    | TRY Block Catch FINALLY Block
        {$$ = yy.addLocationDataFn(@1, @5)(new yy.Try($2, $3[0], $3[1], $5));}
    ;

Catch
    : CATCH Identifier Block
        {$$ = yy.addLocationDataFn(@1, @3)([$2, $3]);}
    | CATCH Object Block
        {$$ = yy.addLocationDataFn(@1, @3)([yy.addLocationDataFn(@2)(new yy.Value($2)), $3]);}
    | CATCH Block
        {$$ = yy.addLocationDataFn(@1, @2)([null, $2]);}
    ;

Throw
    : THROW Expression
        {$$ = yy.addLocationDataFn(@1, @2)(new yy.Throw($2));}
    ;

Parenthetical
    : '(' Body ')'
        {$$ = yy.addLocationDataFn(@1, @3)(new yy.Parens($2));}
    | '(' INDENT Body OUTDENT ')'
        {$$ = yy.addLocationDataFn(@1, @5)(new yy.Parens($3));}
    ;

WhileSource
    : WHILE Expression
        {$$ = yy.addLocationDataFn(@1, @2)(new yy.While($2));}
    | WHILE Expression WHEN Expression
        {$$ = yy.addLocationDataFn(@1, @4)(new yy.While($2, {
          guard: $4
        }));}
    | UNTIL Expression
        {$$ = yy.addLocationDataFn(@1, @2)(new yy.While($2, {
          invert: true
        }));}
    | UNTIL Expression WHEN Expression
        {$$ = yy.addLocationDataFn(@1, @4)(new yy.While($2, {
          invert: true,
          guard: $4
        }));}
    ;

While
    : WhileSource Block
        {$$ = yy.addLocationDataFn(@1, @2)($1.addBody($2));}
    | Statement WhileSource
        {$$ = yy.addLocationDataFn(@1, @2)($2.addBody(yy.addLocationDataFn(@1)(yy.Block.wrap([$1]))));}
    | Expression WhileSource
        {$$ = yy.addLocationDataFn(@1, @2)($2.addBody(yy.addLocationDataFn(@1)(yy.Block.wrap([$1]))));}
    | Loop
        {$$ = yy.addLocationDataFn(@1, @1)($1);}
    ;

Loop
    : LOOP Block
        {$$ = yy.addLocationDataFn(@1, @2)(new yy.While(yy.addLocationDataFn(@1)(new yy.BooleanLiteral('true'))).addBody($2));}
    | LOOP Expression
        {$$ = yy.addLocationDataFn(@1, @2)(new yy.While(yy.addLocationDataFn(@1)(new yy.BooleanLiteral('true'))).addBody(yy.addLocationDataFn(@2)(yy.Block.wrap([$2]))));}
    ;

For
    : Statement ForBody
        {$$ = yy.addLocationDataFn(@1, @2)(new yy.For($1, $2));}
    | Expression ForBody
        {$$ = yy.addLocationDataFn(@1, @2)(new yy.For($1, $2));}
    | ForBody Block
        {$$ = yy.addLocationDataFn(@1, @2)(new yy.For($2, $1));}
    ;

ForBody
    : FOR Range
        {$$ = yy.addLocationDataFn(@1, @2)({
          source: yy.addLocationDataFn(@2)(new yy.Value($2))
        });}
    | FOR Range BY Expression
        {$$ = yy.addLocationDataFn(@1, @4)({
          source: yy.addLocationDataFn(@2)(new yy.Value($2)),
          step: $4
        });}
    | ForStart ForSource
        {$$ = yy.addLocationDataFn(@1, @2)((function () {
        $2.own = $1.own;
        $2.ownTag = $1.ownTag;
        $2.name = $1[0];
        $2.index = $1[1];
        return $2;
      }()));}
    ;

ForStart
    : FOR ForVariables
        {$$ = yy.addLocationDataFn(@1, @2)($2);}
    | FOR OWN ForVariables
        {$$ = yy.addLocationDataFn(@1, @3)((function () {
        $3.own = true;
        $3.ownTag = yy.addLocationDataFn(@2)(new yy.Literal($2));
        return $3;
      }()));}
    ;

ForValue
    : Identifier
        {$$ = $1;}
    | ThisProperty
        {$$ = $1;}
    | Array
        {$$ = yy.addLocationDataFn(@1, @1)(new yy.Value($1));}
    | Object
        {$$ = yy.addLocationDataFn(@1, @1)(new yy.Value($1));}
    ;

ForVariables
    : ForValue
        {$$ = yy.addLocationDataFn(@1, @1)([$1]);}
    | ForValue ',' ForValue
        {$$ = yy.addLocationDataFn(@1, @3)([$1, $3]);}
    ;

ForSource
    : FORIN Expression
        {$$ = yy.addLocationDataFn(@1, @2)({
          source: $2
        });}
    | FOROF Expression
        {$$ = yy.addLocationDataFn(@1, @2)({
          source: $2,
          object: true
        });}
    | FORIN Expression WHEN Expression
        {$$ = yy.addLocationDataFn(@1, @4)({
          source: $2,
          guard: $4
        });}
    | FOROF Expression WHEN Expression
        {$$ = yy.addLocationDataFn(@1, @4)({
          source: $2,
          guard: $4,
          object: true
        });}
    | FORIN Expression BY Expression
        {$$ = yy.addLocationDataFn(@1, @4)({
          source: $2,
          step: $4
        });}
    | FORIN Expression WHEN Expression BY Expression
        {$$ = yy.addLocationDataFn(@1, @6)({
          source: $2,
          guard: $4,
          step: $6
        });}
    | FORIN Expression BY Expression WHEN Expression
        {$$ = yy.addLocationDataFn(@1, @6)({
          source: $2,
          step: $4,
          guard: $6
        });}
    | FORFROM Expression
        {$$ = yy.addLocationDataFn(@1, @2)({
          source: $2,
          from: true
        });}
    | FORFROM Expression WHEN Expression
        {$$ = yy.addLocationDataFn(@1, @4)({
          source: $2,
          guard: $4,
          from: true
        });}
    ;

Switch
    : SWITCH Expression INDENT Whens OUTDENT
        {$$ = yy.addLocationDataFn(@1, @5)(new yy.Switch($2, $4));}
    | SWITCH Expression INDENT Whens ELSE Block OUTDENT
        {$$ = yy.addLocationDataFn(@1, @7)(new yy.Switch($2, $4, $6));}
    | SWITCH INDENT Whens OUTDENT
        {$$ = yy.addLocationDataFn(@1, @4)(new yy.Switch(null, $3));}
    | SWITCH INDENT Whens ELSE Block OUTDENT
        {$$ = yy.addLocationDataFn(@1, @6)(new yy.Switch(null, $3, $5));}
    ;

Whens
    : When
        {$$ = $1;}
    | Whens When
        {$$ = yy.addLocationDataFn(@1, @2)($1.concat($2));}
    ;

When
    : LEADING_WHEN SimpleArgs Block
        {$$ = yy.addLocationDataFn(@1, @3)([[$2, $3]]);}
    | LEADING_WHEN SimpleArgs Block TERMINATOR
        {$$ = yy.addLocationDataFn(@1, @4)([[$2, $3]]);}
    ;

IfBlock
    : IF Expression Block
        {$$ = yy.addLocationDataFn(@1, @3)(new yy.If($2, $3, {
          type: $1
        }));}
    | IfBlock ELSE IF Expression Block
        {$$ = yy.addLocationDataFn(@1, @5)($1.addElse(yy.addLocationDataFn(@3, @5)(new yy.If($4, $5, {
          type: $3
        }))));}
    ;

If
    : IfBlock
        {$$ = $1;}
    | IfBlock ELSE Block
        {$$ = yy.addLocationDataFn(@1, @3)($1.addElse($3));}
    | Statement POST_IF Expression
        {$$ = yy.addLocationDataFn(@1, @3)(new yy.If($3, yy.addLocationDataFn(@1)(yy.Block.wrap([$1])), {
          type: $2,
          statement: true
        }));}
    | Expression POST_IF Expression
        {$$ = yy.addLocationDataFn(@1, @3)(new yy.If($3, yy.addLocationDataFn(@1)(yy.Block.wrap([$1])), {
          type: $2,
          statement: true
        }));}
    ;

Operation
    : UNARY Expression
        {$$ = yy.addLocationDataFn(@1, @2)(new yy.Op($1, $2));}
    | UNARY_MATH Expression
        {$$ = yy.addLocationDataFn(@1, @2)(new yy.Op($1, $2));}
    | '-' Expression %prec UNARY_MATH
        {$$ = yy.addLocationDataFn(@1, @2)(new yy.Op('-', $2));}
    | '+' Expression %prec UNARY_MATH
        {$$ = yy.addLocationDataFn(@1, @2)(new yy.Op('+', $2));}
    | AWAIT Expression
        {$$ = yy.addLocationDataFn(@1, @2)(new yy.Op($1, $2));}
    | '--' SimpleAssignable
        {$$ = yy.addLocationDataFn(@1, @2)(new yy.Op('--', $2));}
    | '++' SimpleAssignable
        {$$ = yy.addLocationDataFn(@1, @2)(new yy.Op('++', $2));}
    | SimpleAssignable '--'
        {$$ = yy.addLocationDataFn(@1, @2)(new yy.Op('--', $1, null, true));}
    | SimpleAssignable '++'
        {$$ = yy.addLocationDataFn(@1, @2)(new yy.Op('++', $1, null, true));}
    | Expression '?'
        {$$ = yy.addLocationDataFn(@1, @2)(new yy.Existence($1));}
    | Expression '+' Expression
        {$$ = yy.addLocationDataFn(@1, @3)(new yy.Op('+', $1, $3));}
    | Expression '-' Expression
        {$$ = yy.addLocationDataFn(@1, @3)(new yy.Op('-', $1, $3));}
    | Expression MATH Expression
        {$$ = yy.addLocationDataFn(@1, @3)(new yy.Op($2, $1, $3));}
    | Expression '**' Expression
        {$$ = yy.addLocationDataFn(@1, @3)(new yy.Op($2, $1, $3));}
    | Expression SHIFT Expression
        {$$ = yy.addLocationDataFn(@1, @3)(new yy.Op($2, $1, $3));}
    | Expression COMPARE Expression
        {$$ = yy.addLocationDataFn(@1, @3)(new yy.Op($2, $1, $3));}
    | Expression '&' Expression
        {$$ = yy.addLocationDataFn(@1, @3)(new yy.Op($2, $1, $3));}
    | Expression '^' Expression
        {$$ = yy.addLocationDataFn(@1, @3)(new yy.Op($2, $1, $3));}
    | Expression '|' Expression
        {$$ = yy.addLocationDataFn(@1, @3)(new yy.Op($2, $1, $3));}
    | Expression '&&' Expression
        {$$ = yy.addLocationDataFn(@1, @3)(new yy.Op($2, $1, $3));}
    | Expression '||' Expression
        {$$ = yy.addLocationDataFn(@1, @3)(new yy.Op($2, $1, $3));}
    | Expression BIN? Expression
        {$$ = yy.addLocationDataFn(@1, @3)(new yy.Op($2, $1, $3));}
    | Expression RELATION Expression
        {$$ = yy.addLocationDataFn(@1, @3)((function () {
        if ($2.charAt(0) === '!') {
          return new yy.Op($2.slice(1), $1, $3).invert();
        } else {
          return new yy.Op($2, $1, $3);
        }
      }()));}
    | SimpleAssignable COMPOUND_ASSIGN Expression
        {$$ = yy.addLocationDataFn(@1, @3)(new yy.Assign($1, $3, $2));}
    | SimpleAssignable COMPOUND_ASSIGN INDENT Expression OUTDENT
        {$$ = yy.addLocationDataFn(@1, @5)(new yy.Assign($1, $4, $2));}
    | SimpleAssignable COMPOUND_ASSIGN TERMINATOR Expression
        {$$ = yy.addLocationDataFn(@1, @4)(new yy.Assign($1, $4, $2));}
    ;

Github pages yields 404

I'm not sure what is going wrong but github shows me 404 for the page of the app, had something working there now it's gone I guess.

Uncaught Error: Invariant Violation

Seeing this intermittent error:

Uncaught Error: Invariant Violation: replaceState(...): Can only update a mounted or mounting component.
  invariant.js:42 invariantReactCompositeComponent.js:449 
  validateLifeCycleOnReplaceStateReactCompositeComponent.js:893 
  ReactCompositeComponentMixin.replaceStateReactCompositeComponent.js:874 
  ReactCompositeComponentMixin.setStateLexErrorView.js:24 
  React.createClass._onChangeevents.js:99 EventEmitter.emitGrammarStore.js:23 
  assign.emitChangeGrammarStore.js:81 (anonymous function)Dispatcher.js:220 
  Dispatcher.$Dispatcher_invokeCallbackDispatcher.js:195 Dispatcher.dispatchdispatcher.js:22 
  assign.handleWorkerActionParsedTextActionCreator.js:8 module.exports.textParsedParserWorkerService.js:19 (anonymous function)

I know what some of those words mean...

Feature request: Test grammar rules only

@nolanlawson May I ask you to add a checkbox to check only grammar rules without JavaScript internal code. For example:

Source grammar:

    DeclaresList
    : DeclareItem
        { $$ = [$1]; }
    | DeclaresList COMMA DeclareItem
        { $1.push($3); $$ = $1; }
    ;

Debugging grammar:

     DeclaresList
    : DeclareItem
    | DeclaresList COMMA DeclareItem
    ;

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