An AST Library
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README.md

Patrisika [Revented]

An library converts orthogonal AST into SpiderMonkey AST.

Semantics

AST for Patrisika is provided as JavaScript arraies. The following forms represents a node:

'identifier'

Represents a variable.

['.quote', value]

Represents a literal value.

['.unit']

Represents undefined value.

['.thisp']

Represents this reference.

['.argsp']

Represents argument list passed into the current function.

['.lambda', [...params], body]

Defines an anonymous function.

['.list', ...items]

Represents an array.

['.hash', ...['propName', propValue]]

Represents an object.

['.', base, member]

Represents a membering operation, i.e. base[member].

['.if', condition, consequent, alternate?]

Represents a conditional evaluation.

['.while', condition, body]

Represents a while loop evaluation. It returns the value of body in the last evaluation.

['.begin', ...items]

Represents a sequencial evaluation. Returns the last item evaluated.

['.return', value]

Return a value. Similar to JavaScript return statement.

['.try', block, [param], handler]

Represents a exception handling expression. Returns the value of block normally, or the value of handler1 when a exception is thrown during evaluating block.

['.throw', value]

Throws value as an exception.

['.set', left, right]

Assign right to variable or property node left.

[fn, ...args]

Once fn is a valid node, it means a common function invocation.

['.new', callee, ...args]

Initiates an instance of constructor callee, with args as arguments.

['.yield', value]

Represents a ES6 yield expression. Any functions directly containing such node will become a generator function described in ES6 specification.

['.beta', [...params], body, ...args]

Represents a beta redex which is similar to [['.lambda', [...params], body], ...args], used to implement semantics of let in scheme.

Operators

  • Unary operator
    • ['.typeof', x] : typeof
    • ['!', x] : !
    • ['+', x] : +
    • ['-', x] : -
  • Binary and Logical operator
    • ['+', x, y] : + (both numeric and string)
    • ['-', x, y] : -
    • ['*', x, y] : *
    • ['/', x, y] : /
    • ['%', x, y] : %
    • ['<', x, y] : <
    • ['>', x, y] : >
    • ['<=', x, y] : <=
    • ['>=', x, y] : >=
    • ['===', x, y] : ===
    • ['!==', x, y] : !==
    • ['=~', x, y] : ==
    • ['!~', x, y] : !=
    • ['.is', x, y] : instanceof
    • ['&&', x, y] : &&
    • ['||', x, y] : ||

Usage

Using Patrisika is pretty simple and straight forward:

// Note : global scopes must be provided. Undeclared variables in Patrisika
//        are treated as local variables, instead of global.
var globalScope = new Patrisika.DefaultExterns;
globalScope.declare("globalVariable");
patrisika.compile(ast, globals);

License

###Patrisika Patrisika is a library about orthogonal AST for JavaScript

Copyright (c) 2013-2014, Belleve Invis and contributors All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

  • Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.

  • Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

  • Neither the names of the Mozilla Foundation nor the names of project contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Escodegen

Copyright (C) 2012 Yusuke Suzuki (twitter: @Constellation) and other contributors.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

  • Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.

  • Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

source-map

SourceNodeMocks has a limited interface of mozilla/source-map SourceNode implementations.

Copyright (c) 2009-2011, Mozilla Foundation and contributors All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

  • Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.

  • Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

  • Neither the names of the Mozilla Foundation nor the names of project contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.