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Top Forums UNIX for Dummies Questions & Answers I dont really think that the math header has syntax errors Post 302452973 by Corona688 on Monday 13th of September 2010 04:40:16 PM
Old 09-13-2010
Syntax errors or an incomplete statement before the math header is included perhaps. Without seeing the source it's difficult to tell.
Test Your Knowledge in Computers #629
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grammar::me::util(n)					   Grammar operations and usage 				      grammar::me::util(n)


grammar::me::util - AST utilities SYNOPSIS
package require Tcl 8.4 package require grammar::me::util ?0.1? ::grammar::me::util::ast2tree ast tree ?root? ::grammar::me::util::ast2etree ast mcmd tree ?root? mcmd lc location mcmd tok from ?to? ::grammar::me::util::tree2ast tree ?root? _________________________________________________________________ DESCRIPTION
This package provides a number of utility command for the conversion between the various representations of abstract syntax trees as speci- fied in the document grammar::me_ast. ::grammar::me::util::ast2tree ast tree ?root? This command converts an ast from value to object representation. All nodes in the ast will be converted into nodes of this tree, with the root of the AST a child of the node root. If this node is not explicitly specified the root of the tree is used. Existing content of tree is not touched, i.e. neither removed nor changed, with the exception of the specified root node, which will gain a new child. ::grammar::me::util::ast2etree ast mcmd tree ?root? This command is like ::grammar::me::util::ast2tree, except that the result is in the extended object representation of the input AST. The source of the extended information is the command prefix mcmd. It has to understand two methods, lc, and tok, with the semantics specified below. mcmd lc location Takes the location of a token given as offset in the input stream and return a 2-element list containing the associated line number and column index, in this order. mcmd tok from ?to? Takes one or two locations from and to as offset in the input stream and returns a Tcl list containing the specified part of the input stream. Both location are inclusive. If to is not specified it will default to the value of from. Each element of the returned list is a list containing the token, its associated lexeme, the line number, and column index, in this order. Both the ensemble command ::grammar::me::tcl provided by the package grammar::me::tcl and the objects command created by the package ::grammar::me::cpu fit the above specification. ::grammar::me::util::tree2ast tree ?root? This command converts an ast in (extended) object representation into a value and returns it. If a root node is specified the AST is generated from that node downward. Otherwise the root of the tree object is used as the starting point. BUGS, IDEAS, FEEDBACK This document, and the package it describes, will undoubtedly contain bugs and other problems. Please report such in the category gram- mar_me of the Tcllib SF Trackers []. Please also report any ideas for enhancements you may have for either package and/or documentation. KEYWORDS
abstract syntax tree, syntax tree, tree CATEGORY
Grammars and finite automata COPYRIGHT
Copyright (c) 2005 Andreas Kupries <> grammar_me 0.1 grammar::me::util(n)

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