/
Parser.js
2979 lines (2426 loc) · 66.2 KB
/
Parser.js
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/* -*- Mode: JavaScript; coding: utf-8; tab-width: 3; indent-tabs-mode: tab; c-basic-offset: 3 -*-
*******************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright create3000, Scheffelstraße 31a, Leipzig, Germany 2011.
*
* All rights reserved. Holger Seelig <holger.seelig@yahoo.de>.
*
* The copyright notice above does not evidence any actual of intended
* publication of such source code, and is an unpublished work by create3000.
* This material contains CONFIDENTIAL INFORMATION that is the property of
* create3000.
*
* No permission is granted to copy, distribute, or create derivative works from
* the contents of this software, in whole or in part, without the prior written
* permission of create3000.
*
* NON-MILITARY USE ONLY
*
* All create3000 software are effectively free software with a non-military use
* restriction. It is free. Well commented source is provided. You may reuse the
* source in any way you please with the exception anything that uses it must be
* marked to indicate is contains 'non-military use only' components.
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2015, 2016 Holger Seelig <holger.seelig@yahoo.de>.
*
* This file is part of the Cobweb Project.
*
* Cobweb is free software: you can redistribute it and/or modify it under the
* terms of the GNU General Public License version 3 only, as published by the
* Free Software Foundation.
*
* Cobweb is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
* A PARTICULAR PURPOSE. See the GNU General Public License version 3 for more
* details (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU General Public License version 3
* along with Cobweb. If not, see <http://www.gnu.org/licenses/gpl.html> for a
* copy of the GPLv3 License.
*
* For Silvio, Joy and Adi.
*
******************************************************************************/
define ([
"jquery",
"cobweb/Fields",
"cobweb/Prototype/X3DExternProtoDeclaration",
"cobweb/Prototype/X3DProtoDeclaration",
"cobweb/Bits/X3DConstants",
],
function ($,
Fields,
X3DExternProtoDeclaration,
X3DProtoDeclaration,
X3DConstants)
{
"use strict";
function accessTypeToString (accessType)
{
switch (accessType)
{
case X3DConstants .inializeOnly:
return "initializeOnly";
case X3DConstants .inputOnly:
return "inputOnly";
case X3DConstants .outputOnly:
return "outputOnly";
case X3DConstants .inputOutput:
return "inputOutput";
}
}
/*
* Grammar
*/
// VRML lexical elements
var Grammar =
{
// General
Whitespaces: /^([\x20\n,\t\r]+)/,
Comment: /^#(.*?)(?=[\n\r])/,
// Header
Header: /^#(VRML|X3D) V(.*?) (utf8)(?: (.*?))?[\n\r]/,
// Keywords
AS: /^AS/,
COMPONENT: /^COMPONENT/,
DEF: /^DEF/,
EXPORT: /^EXPORT/,
EXTERNPROTO: /^EXTERNPROTO/,
FALSE: /^FALSE/,
false: /^false/,
IMPORT: /^IMPORT/,
IS: /^IS/,
META: /^META/,
NULL: /^NULL/,
TRUE: /^TRUE/,
true: /^true/,
PROFILE: /^PROFILE/,
PROTO: /^PROTO/,
ROUTE: /^ROUTE/,
TO: /^TO/,
UNIT: /^UNIT/,
USE: /^USE/,
// Terminal symbols
OpenBrace: /^\{/,
CloseBrace: /^\}/,
OpenBracket: /^\[/,
CloseBracket: /^\]/,
Period: /^\./,
Colon: /^\:/,
Id: /^([^\x30-\x39\x00-\x20\x22\x23\x27\x2b\x2c\x2d\x2e\x5b\x5c\x5d\x7b\x7d\x7f]{1}[^\x00-\x20\x22\x23\x27\x2c\x2e\x5b\x5c\x5d\x7b\x7d\x7f]*)/,
ComponentNameId: /^([^\x30-\x39\x00-\x20\x22\x23\x27\x2b\x2c\x2d\x2e\x5b\x5c\x5d\x7b\x7d\x7f\x3a]{1}[^\x00-\x20\x22\x23\x27\x2c\x2e\x5b\x5c\x5d\x7b\x7d\x7f\x3a]*)/,
initializeOnly: /^initializeOnly/,
inputOnly: /^inputOnly/,
outputOnly: /^outputOnly/,
inputOutput: /^inputOutput/,
field: /^field/,
eventIn: /^eventIn/,
eventOut: /^eventOut/,
exposedField: /^exposedField/,
FieldType: /^(MFBool|MFColorRGBA|MFColor|MFDouble|MFFloat|MFImage|MFInt32|MFMatrix3d|MFMatrix3f|MFMatrix4d|MFMatrix4f|MFNode|MFRotation|MFString|MFTime|MFVec2d|MFVec2f|MFVec3d|MFVec3f|MFVec4d|MFVec4f|SFBool|SFColorRGBA|SFColor|SFDouble|SFFloat|SFImage|SFInt32|SFMatrix3d|SFMatrix3f|SFMatrix4d|SFMatrix4f|SFNode|SFRotation|SFString|SFTime|SFVec2d|SFVec2f|SFVec3d|SFVec3f|SFVec4d|SFVec4f)/,
// Values
int32: /^((?:0[xX][\da-fA-F]+)|(?:[+-]?\d+))/,
double: /^([+-]?(?:(?:(?:\d*\.\d+)|(?:\d+(?:\.)?))(?:[eE][+-]?\d+)?))/,
string: /^"((?:[^"\\]|\\\\|\\")*)"/,
Inf: /^[+]?inf/i,
NegativeInf: /^-inf/i,
NaN: /^[+-]?nan/i,
// Misc
Break: /\r?\n/g,
};
function parse (parser)
{
this .lastIndex = 0;
parser .result = this .exec (parser .input);
if (parser .result)
{
parser .input = parser .input .slice (parser .result [0] .length);
return true;
}
return false;
}
/*
// VRML lexical elements
var Grammar =
{
// General
Whitespaces: new RegExp ('^([\\x20\\n,\\t\\r]+)', 'y'),
Comment: new RegExp ('^#(.*?)(?=[\\n\\r])', 'y'),
// Header
Header: new RegExp ("^#(VRML|X3D) V(.*?) (utf8)(?: (.*?))?[\\n\\r]", 'y'),
// Keywords
AS: new RegExp ('^AS', 'y'),
COMPONENT: new RegExp ('^COMPONENT', 'y'),
DEF: new RegExp ('^DEF', 'y'),
EXPORT: new RegExp ('^EXPORT', 'y'),
EXTERNPROTO: new RegExp ('^EXTERNPROTO', 'y'),
FALSE: new RegExp ('^FALSE', 'y'),
false: new RegExp ('^false', 'y'),
IMPORT: new RegExp ('^IMPORT', 'y'),
IS: new RegExp ('^IS', 'y'),
META: new RegExp ('^META', 'y'),
NULL: new RegExp ('^NULL', 'y'),
TRUE: new RegExp ('^TRUE', 'y'),
true: new RegExp ('^true', 'y'),
PROFILE: new RegExp ('^PROFILE', 'y'),
PROTO: new RegExp ('^PROTO', 'y'),
ROUTE: new RegExp ('^ROUTE', 'y'),
TO: new RegExp ('^TO', 'y'),
UNIT: new RegExp ('^UNIT', 'y'),
USE: new RegExp ('^USE', 'y'),
// Terminal symbols
OpenBrace: new RegExp ('^\\{', 'y'),
CloseBrace: new RegExp ('^\\}', 'y'),
OpenBracket: new RegExp ('^\\[', 'y'),
CloseBracket: new RegExp ('^\\]', 'y'),
Period: new RegExp ('^\\.', 'y'),
Colon: new RegExp ('^\\:', 'y'),
Id: new RegExp ('^([^\\x30-\\x39\\x00-\\x20\\x22\\x23\\x27\\x2b\\x2c\\x2d\\x2e\\x5b\\x5c\\x5d\\x7b\\x7d\\x7f]{1}[^\\x00-\\x20\\x22\\x23\\x27\\x2c\\x2e\\x5b\\x5c\\x5d\\x7b\\x7d\\x7f]*)', 'y'),
ComponentNameId: new RegExp ('^([^\\x30-\\x39\\x00-\\x20\\x22\\x23\\x27\\x2b\\x2c\\x2d\\x2e\\x5b\\x5c\\x5d\\x7b\\x7d\\x7f\\x3a]{1}[^\\x00-\\x20\\x22\\x23\\x27\\x2c\\x2e\\x5b\\x5c\\x5d\\x7b\\x7d\\x7f\\x3a]*)', 'y'),
initializeOnly: new RegExp ('^initializeOnly', 'y'),
inputOnly: new RegExp ('^inputOnly', 'y'),
outputOnly: new RegExp ('^outputOnly', 'y'),
inputOutput: new RegExp ('^inputOutput', 'y'),
field: new RegExp ('^field', 'y'),
eventIn: new RegExp ('^eventIn', 'y'),
eventOut: new RegExp ('^eventOut', 'y'),
exposedField: new RegExp ('^exposedField', 'y'),
FieldType: new RegExp ('^(MFBool|MFColorRGBA|MFColor|MFDouble|MFFloat|MFImage|MFInt32|MFMatrix3d|MFMatrix3f|MFMatrix4d|MFMatrix4f|MFNode|MFRotation|MFString|MFTime|MFVec2d|MFVec2f|MFVec3d|MFVec3f|MFVec4d|MFVec4f|SFBool|SFColorRGBA|SFColor|SFDouble|SFFloat|SFImage|SFInt32|SFMatrix3d|SFMatrix3f|SFMatrix4d|SFMatrix4f|SFNode|SFRotation|SFString|SFTime|SFVec2d|SFVec2f|SFVec3d|SFVec3f|SFVec4d|SFVec4f)', 'y'),
// Values
int32: new RegExp ('^((?:0[xX][\\da-fA-F]+)|(?:[+-]?\\d+))', 'y'),
double: new RegExp ('^([+-]?(?:(?:(?:\\d*\\.\\d+)|(?:\\d+(?:\\.)?))(?:[eE][+-]?\\d+)?))', 'y'),
string: new RegExp ('^"((?:[^\\\\"]|\\\\\\\\|\\\\\\")*)"', 'y'),
Inf: new RegExp ('^[+]?inf', 'yi'),
NegativeInf: new RegExp ('^-inf', 'yi'),
NaN: new RegExp ('^[+-]?nan', 'yi'),
// Misc
Break: new RegExp ('\\r?\\n', 'g'),
};
function parse (parser)
{
this .lastIndex = parser .lastIndex;
parser .result = this .exec (parser .input);
if (parser .result)
{
parser .lastIndex = this .lastIndex;
return true;
}
return false;
}
*/
for (var key in Grammar)
Grammar [key] .parse = parse;
Object .preventExtensions (Grammar);
Object .freeze (Grammar);
Object .seal (Grammar);
/*
* Parser
*/
function Parser (scene, isXML)
{
this .scene = scene;
this .isXML = isXML;
this .executionContexts = [ ];
}
Parser .prototype =
{
accessTypes:
{
field: X3DConstants .initializeOnly,
eventIn: X3DConstants .inputOnly,
eventOut: X3DConstants .outputOnly,
exposedField: X3DConstants .inputOutput,
initializeOnly: X3DConstants .initializeOnly,
inputOnly: X3DConstants .inputOnly,
outputOnly: X3DConstants .outputOnly,
inputOutput: X3DConstants .inputOutput,
},
SFBool: new Fields .SFBool (),
SFColor: new Fields .SFColor (),
SFColorRGBA: new Fields .SFColorRGBA (),
SFDouble: new Fields .SFDouble (),
SFFloat: new Fields .SFFloat (),
SFImage: new Fields .SFImage (),
SFInt32: new Fields .SFInt32 (),
SFMatrix3f: new Fields .SFMatrix3f (),
SFMatrix3d: new Fields .SFMatrix3d (),
SFMatrix4f: new Fields .SFMatrix4f (),
SFMatrix4d: new Fields .SFMatrix4d (),
SFNode: new Fields .SFNode (),
SFRotation: new Fields .SFRotation (),
SFString: new Fields .SFString (),
SFTime: new Fields .SFTime (),
SFVec2d: new Fields .SFVec2d (),
SFVec2f: new Fields .SFVec2f (),
SFVec3d: new Fields .SFVec3d (),
SFVec3f: new Fields .SFVec3f (),
SFVec4d: new Fields .SFVec4d (),
SFVec4f: new Fields .SFVec4f (),
MFBool: new Fields .MFBool (),
MFColor: new Fields .MFColor (),
MFColorRGBA: new Fields .MFColorRGBA (),
MFDouble: new Fields .MFDouble (),
MFFloat: new Fields .MFFloat (),
MFImage: new Fields .MFImage (),
MFInt32: new Fields .MFInt32 (),
MFMatrix3d: new Fields .MFMatrix3d (),
MFMatrix3f: new Fields .MFMatrix3f (),
MFMatrix4d: new Fields .MFMatrix4d (),
MFMatrix4f: new Fields .MFMatrix4f (),
MFNode: new Fields .MFNode (),
MFRotation: new Fields .MFRotation (),
MFString: new Fields .MFString (),
MFTime: new Fields .MFTime (),
MFVec2d: new Fields .MFVec2d (),
MFVec2f: new Fields .MFVec2f (),
MFVec3d: new Fields .MFVec3d (),
MFVec3f: new Fields .MFVec3f (),
MFVec4d: new Fields .MFVec4d (),
MFVec4f: new Fields .MFVec4f (),
setInput: function (value)
{
this .input = value;
this .lineNumber = 1;
this .lastIndex = 0;
},
getBrowser: function ()
{
return this .scene .getBrowser ();
},
getExecutionContext: function ()
{
return this .executionContexts [this .executionContexts .length - 1];
},
pushExecutionContext: function (executionContext)
{
return this .executionContexts .push (executionContext);
},
popExecutionContext: function ()
{
this .executionContexts .pop ();
},
isInsideProtoDefinition: function ()
{
return this .executionContexts .length > 1;
},
addRootNode: function (node)
{
this .getExecutionContext () .rootNodes .push (node);
},
exception: function (string)
{
if (this .getBrowser () .isStrict ())
throw new Error (string);
this .getBrowser () .println (string);
},
parseIntoScene: function (input)
{
try
{
this .scene .setEncoding ("VRML");
this .scene .setProfile (this .getBrowser () .getProfile ("Full"));
this .setInput (input);
this .x3dScene ();
return;
}
catch (error)
{
throw new Error (this .getError (error));
}
},
getError: function (error)
{
//console .log (error);
var string = error .message;
var
rest = this .getLine (),
line = this .getLastLine (),
lastLine = this .getLastLine (),
linePos = line .length - rest .length + 1;
if (line .length > 80)
{
line = line .substr (linePos - 40, 80);
lastLine = "";
linePos = 40;
}
// Format error
var message = "\n"
+ "********************************************************************************" + "\n"
+ "Parser error at line " + this .lineNumber + ":" + linePos + "\n"
+ "in '" + this .scene .getURL () + "'" + "\n"
+ "\n"
+ lastLine + "\n"
+ line + "\n"
+ Array (linePos) .join (" ") + "^" + "\n"
+ string + "\n"
+ "********************************************************************************"
+ "\n"
;
return message;
},
getLine: function ()
{
var
input = this .input,
lastIndex = this .lastIndex,
line = "";
while (lastIndex < input .length && input [lastIndex] !== "\n" && input [lastIndex] !== "\r")
line += input [lastIndex ++];
this .lastIndex = lastIndex;
return line;
},
getLastLine: function ()
{
var
input = this .input,
lastIndex = this .lastIndex,
line = "";
if (lastIndex < input .length && (input [lastIndex] !== "\n" || input [lastIndex] !== "\r"))
-- lastIndex;
while (lastIndex >= 0 && input [lastIndex] !== "\n" && input [lastIndex] !== "\r")
line = input [lastIndex --] + line;
this .lastIndex = lastIndex;
return line;
},
comments: function ()
{
while (this .comment ())
;
},
comment: function ()
{
if (this .whitespaces ())
return true;
return Grammar .Comment .parse (this);
},
whitespaces: function ()
{
if (Grammar .Whitespaces .parse (this))
{
if (!this .xml)
this .lines (this .result [1]);
return true;
}
return false;
},
lines: function (string)
{
var match = string .match (Grammar .Break);
if (match)
this .lineNumber += match .length;
},
x3dScene: function ()
{
this .pushExecutionContext (this .scene);
this .headerStatement ();
this .profileStatement ();
this .componentStatements ();
this .unitStatements ();
this .metaStatements ();
this .statements ();
this .popExecutionContext (this .scene);
if (this .lastIndex < this .input .length)
throw new Error ("Unknown statement.");
},
headerStatement: function ()
{
var result = Grammar .Header .exec (this .input);
if (result)
{
this .scene .specificationVersion = result [2];
this .scene .encoding = "VRML";
return true;
}
return false;
},
profileStatement: function ()
{
this .comments ();
if (Grammar .PROFILE .parse (this))
{
if (this .profileNameId ())
{
var profile = this .getBrowser () .getProfile (this .result [1]);
this .scene .setProfile (profile);
return;
}
throw new Error ("Expected a profile name.");
}
},
componentStatements: function ()
{
var component = this .componentStatement ();
while (component)
{
this .scene .addComponent (component);
component = this .componentStatement ();
}
},
componentStatement: function ()
{
this .comments ();
if (Grammar .COMPONENT .parse (this))
{
if (this .componentNameId ())
{
var componentNameIdCharacters = this .result [1];
this .comments ();
if (Grammar .Colon .parse (this))
{
if (this .componentSupportLevel ())
{
var componentSupportLevel = this .value;
return this .getBrowser () .getComponent (componentNameIdCharacters, componentSupportLevel);
}
throw new Error ("Expected a component support level.");
}
throw new Error ("Expected a ':' after component name.");
}
throw new Error ("Expected a component name.");
}
return null;
},
componentSupportLevel: function ()
{
return this .int32 ();
},
unitStatements: function ()
{
while (this .unitStatement ())
;
},
unitStatement: function ()
{
this .comments ();
if (Grammar .UNIT .parse (this))
{
if (this .categoryNameId ())
{
var categoryNameId = this .result [1];
if (this .unitNameId ())
{
var unitNameId = this .result [1];
if (this .unitConversionFactor ())
{
var unitConversionFactor = this .value;
try
{
this .scene .updateUnit (categoryNameId, unitNameId, unitConversionFactor);
return true;
}
catch (error)
{
console .log (error .message);
return true;
}
}
throw new Error ("Expected unit conversion factor.");
}
throw new Error ("Expected unit name identificator.");
}
throw new Error ("Expected category name identificator after UNIT statement.");
}
return false;
},
unitConversionFactor: function ()
{
return this .double ();
},
metaStatements: function ()
{
while (this .metaStatement ())
;
},
metaStatement: function ()
{
this .comments ();
if (Grammar .META .parse (this))
{
if (this .metakey ())
{
var metakey = this .value;
if (this .metavalue ())
{
var metavalue = this .value;
this .scene .setMetaData (metakey, metavalue);
return true;
}
throw new Error ("Expected metadata value.");
}
throw new Error ("Expected metadata key.");
}
return false;
},
metakey: function ()
{
return this .string ();
},
metavalue: function ()
{
return this .string ();
},
exportStatement: function ()
{
this .comments ();
if (Grammar .EXPORT .parse (this))
{
if (this .nodeNameId ())
{
var
localNodeNameId = this .result [1],
exportedNodeNameId = "";
this .comments ();
var node = this .scene .getLocalNode (localNodeNameId);
if (Grammar .AS .parse (this))
{
if (this .exportedNodeNameId ())
exportedNodeNameId = this .result [1];
else
throw new Error ("No name given after AS.");
}
else
exportedNodeNameId = localNodeNameId;
this .scene .updateExportedNode (exportedNodeNameId, node);
return true;
}
throw new Error ("No name given after EXPORT.");
}
return false;
},
importStatement: function ()
{
this .comments ();
if (Grammar .IMPORT .parse (this))
{
if (this .nodeNameId ())
{
var
inlineNodeNameId = this .result [1],
namedNode = this .getExecutionContext () .getNamedNode (inlineNodeNameId);
this .comments ();
if (Grammar .Period .parse (this))
{
if (this .exportedNodeNameId ())
{
var
exportedNodeNameId = this .result [1],
nodeNameId = exportedNodeNameId;
this .comments ();
if (Grammar .AS .parse (this))
{
if (this .nodeNameId ())
nodeNameId = this .result [1];
else
throw new Error ("No name given after AS.");
}
this .getExecutionContext () .updateImportedNode (namedNode, exportedNodeNameId, nodeNameId);
return true;
}
throw new Error ("Expected exported node name.");
}
throw new Error ("Expected a '.' after exported node name.");
}
throw new Error ("No name given after IMPORT statement.");
}
return false;
},
statements: function ()
{
while (this .statement ())
;
},
statement: function ()
{
if (this .protoStatement ())
return true;
if (this .routeStatement ())
return true;
if (this .importStatement ())
return true;
if (this .exportStatement ())
return true;
var node = this .nodeStatement ();
if (node !== false)
{
this .addRootNode (node);
return true;
}
return false;
},
nodeStatement: function ()
{
this .comments ();
if (Grammar .DEF .parse (this))
{
if (this .nodeNameId ())
return this .node (this .result [1]);
throw new Error ("No name given after DEF.");
}
if (Grammar .USE .parse (this))
{
if (this .nodeNameId ())
return this .getExecutionContext () .getNamedNode (this .result [1]) .getValue ();
throw new Error ("No name given after USE.");
}
if (Grammar .NULL .parse (this))
return null;
return this .node ("");
},
protoStatement: function ()
{
if (this .proto ())
return true;
if (this .externproto ())
return true;
return false;
},
protoStatements: function ()
{
while (this .protoStatement ())
;
},
proto: function ()
{
this .comments ();
if (Grammar .PROTO .parse (this))
{
if (this .nodeTypeId ())
{
var nodeTypeId = this .result [1];
this .comments ();
if (Grammar .OpenBracket .parse (this))
{
var interfaceDeclarations = this .interfaceDeclarations ();
this .comments ();
if (Grammar .CloseBracket .parse (this))
{
this .comments ();
if (Grammar .OpenBrace .parse (this))
{
var proto = new X3DProtoDeclaration (this .getExecutionContext ());
for (var i = 0, length = interfaceDeclarations .length; i < length; ++ i)
{
var field = interfaceDeclarations [i];
proto .addUserDefinedField (field .getAccessType (), field .getName (), field);
}
this .pushExecutionContext (proto);
this .protoBody ();
this .popExecutionContext ();
this .comments ();
if (Grammar .CloseBrace .parse (this))
{
proto .setName (nodeTypeId);
proto .setup ();
this .getExecutionContext () .protos .add (nodeTypeId, proto);
return true;
}
throw new Error ("Expected a '}' at the end of PROTO body.");
}
throw new Error ("Expected a '{' at the beginning of PROTO body.");
}
throw new Error ("Expected a ']' at the end of PROTO interface declaration.");
}
throw new Error ("Expected a '[' at the beginning of PROTO interface declaration.");
}
throw new Error ("Invalid PROTO definition name.");
}
return false;
},
protoBody: function ()
{
this .protoStatements ();
var rootNodeStatement = this .rootNodeStatement ();
if (rootNodeStatement !== false)
this .addRootNode (rootNodeStatement);
this .statements ();
},
rootNodeStatement: function ()
{
this .comments ();
if (Grammar .DEF .parse (this))
{
if (this .nodeNameId ())
{
var
nodeNameId = this .result [0],
baseNode = this .node (nodeNameId);
if (baseNode !== false)
return baseNode;
throw new Error ("Expected node type name after DEF.");
}
throw new Error ("No name given after DEF.");
}
var baseNode = this .node ("");
if (baseNode !== false)
return baseNode;
return false;
},
interfaceDeclarations: function ()
{
var
interfaceDeclarations = [ ],
field = this .interfaceDeclaration ();
while (field)
{
interfaceDeclarations .push (field);
field = this .interfaceDeclaration ();
}
return interfaceDeclarations;
},
restrictedInterfaceDeclaration: function ()
{
this .comments ();
if (Grammar .inputOnly .parse (this) || Grammar .eventIn .parse (this))
{
if (this .fieldType ())
{
var fieldType = this .result [1];
if (this .inputOnlyId ())
{
var
fieldId = this .result [1],
field = new (this [fieldType] .constructor) ();
field .setAccessType (X3DConstants .inputOnly);
field .setName (fieldId);
return field;
}
throw new Error ("Expected a name for field.");
}
this .Id ()
throw new Error ("Unknown event or field type: '" + this .result [1] + "'.");
}
if (Grammar .outputOnly .parse (this) || Grammar .eventOut .parse (this))
{
if (this .fieldType ())
{
var fieldType = this .result [1];
if (this .outputOnlyId ())
{
var
fieldId = this .result [1],
field = new (this [fieldType] .constructor) ();
field .setAccessType (X3DConstants .outputOnly);
field .setName (fieldId);
return field;
}
throw new Error ("Expected a name for field.");
}
this .Id ()
throw new Error ("Unknown event or field type: '" + this .result [1] + "'.");
}
if (Grammar .initializeOnly .parse (this) || Grammar .field .parse (this))
{
if (this .fieldType ())
{
var fieldType = this .result [1];
if (this .initializeOnlyId ())
{
var
fieldId = this .result [1],
field = new (this [fieldType] .constructor) ();
if (this .fieldValue (field))
{
field .setAccessType (X3DConstants .initializeOnly);
field .setName (fieldId);
return field;
}