can I use the following bnf with boost? comments are appreciated. /*** Jscript.bnf ******************************************* 11-01-99 *** * * * Function: A Lingua-based BNF description of the JSCRIPT language. * * * * This translation copyright (C), 2000,2002,2003 Neuric Technologies. * * All rights reserved. No part of this document may be used in in any * * form, nor may derivative works be made from it, except as follows: * * * * This is a translation of an ECMASCRIPT description obtained from the * * ECMA standards committee and available on the Internet. It is simi- * * lar to Microsoft's JSCRIPT language, and is given as an example of * * the conversion of typical industry language descriptions to Lingua * * BNFs. * * * * The translation is provided AS-IS by Neuric Technologies as an * * example of how to translate BNFs. It is not complete with C++ * * interfaces, but demonstrate the processes. It is believed to be * * functional, but is not guaranteed to free of errors. Compiled and * * linked into Lingua's PTEST sample program, it then parses ANSI C * * statements and produces a diagnostic listing of the results. * * * * As you can see, Lingua BNFs are extremely short compared to YACC/LEX * * equivalents and are very readable. * * * * NOTICE: This sample parser is supplied "AS-IS", without support and * * is not an exhaustive or necessarily complete parser for JSCRIPT. It * * is supplied as a starting point from which a parser (for use with * * Lingua, only) may be derived. * * * * *** Visit us at: www.neuric.com *** * * Revision Record: * * 1.00 11-1-99 * * 1. Initial interpretation from ECMA * * * * 1.02 1-15-00; * * 1. Simplification and speedup: VariableStatement, ForStatement. * * 2. Addition of ",h" suffix for hiding of excess pattern tracing. * * 3. Addition of patterns for Literal, NullLiteral, BooleanLiteral,* * and other functions. * * * **************************************************** Thomas A. Visel ***/ includes { include "d:\lingua\ptest\pview.h"; // Decls for the ultimate view class. } info { emit c++; // (Default) or... "emit c" author "Thomas A. Visel"; viewclass "CPView"; // Class for the display view. } patterns { string Symbol; numeric I; interface Record_Newflag (I); /*** Program-level Grammer *** Program = autoskip SourceElements; SourceElements = SourceElement [SourceElement]*; SourceElement,h = {Statement | FunctionDeclaration}; FunctionDeclaration = "function" Identifier "(" [FormalParameterList] ")" Block; FormalParameterList = Identifier ["," Identifier]; /*** Statement-level Grammer **/ Statement = { Block | VariableStatement | EmptyStatement | IfStatement | IterationStatement | ContinueStatement | BreakStatement | ReturnStatement | WithStatement | ExpressionStatement }; Block = "{" [StatementList] "}"; StatementList = Statement [Statement]*; VariableStatement = "var" VariableDeclaration ["," VariableDeclaration]* ";"; VariableDeclaration = Identifier [Initializer]; // Initializer = {"=" AssignmentExpression | EmptyStatement | ";"}; Initializer = "=" AssignmentExpression; EmptyStatement = ";"; ExpressionStatement = Expression ";"; IfStatement = "if" "(" Expression ")" Statement ["else" Statement]; IterationStatement = {WhileStatement | ForStatement}; WhileStatement = "while" "(" Expression ")" Statement; ForStatement = "for" "(" { "var" Identifier [Initializer] "in" Expression | LeftHandSideExpression "in" Expression // | "var" VariableDeclarationList ";" [Expression] ";" [Expression] | VariableStatement [Expression] ";" [Expression] | [Expression] ";" [Expression] ";" [Expression] } ")" Statement; ContinueStatement = "continue" ";"; BreakStatement = "break" ";"; ReturnStatement = "return" [Expression] ";"; WithStatement = "with" "(" Expression ")" Statement; /*** Expression-level Grammer ***/ PrimaryExpression = {"this" | Identifier | Literal | "(" Expression ")"}; MemberExpression,h = [NewFlag] PrimaryExpression [{'.' Identifier | "[" Expression "]"}]* [Arguments]; // NewExpression = {MemberExpression | "new" NewExpression}; NewExpression,h = [NewFlag] MemberExpression; NewFlag,h = "new "; CallExpression = MemberExpression Arguments [{Arguments | "[" Expression "]" | '.' Identifier}]*; Arguments = "(" {")" | [ArgumentList] ")"}; ArgumentList = AssignmentExpression ["," AssignmentExpression]*; LeftHandSideExpression = {NewExpression | CallExpression}; PostfixExpression = LeftHandSideExpression {"++" | "--" | }; UnaryExpression,h = [{"delete" | "void" | "typeof" | "++" | "--" | "+" | "-" | "~" | "!"}] PostfixExpression; MultiplicativeExpression,h = UnaryExpression [{"*" | "/" | "%"} UnaryExpression]*; AdditiveExpression,h = MultiplicativeExpression [{"=" | "+" | "-"} MultiplicativeExpression]*; ShiftExpression,h = AdditiveExpression [{"<<" | ">>>" | ">>"} AdditiveExpression]*; RelationalExpression,h = ShiftExpression [{"<=" | "<" | ">=" | ">"} ShiftExpression]*; EqualityExpression,h = RelationalExpression [{"==" | "!="} RelationalExpression]*; BitwiseANDExpression,h = EqualityExpression ["&" EqualityExpression]*; BitwiseXORExpression,h = BitwiseANDExpression ["^" BitwiseXORExpression]*; BitwiseORExpression,h = BitwiseXORExpression ["|" BitwiseXORExpression]*; LogicalANDExpression,h = BitwiseORExpression ["&&" BitwiseORExpression]*; LogicalORExpression,h = LogicalANDExpression ["||" LogicalANDExpression]*; ConditionalExpression,h = LogicalORExpression ["?" AssignmentExpression ":" AssignmentExpression]; /* AssignmentExpression = {ConditionalExpression | LeftHandSideExpression AssignmentOperator AssignmentExpression } */ AssignmentExpression = {ConditionalExpression | LeftHandSideExpression [AssignmentOperator ConditionalExpression]* }; AssignmentOperator = { "=" | "*=" | "/=" | "%=" | "+=" | "-=" | "<<=" | ">>>=" | ">>=" | "&=" | "^=" | "|=" }; // Expression = {AssignmentExpression | Expression "," AssignmentExpression}; Expression = AssignmentExpression ["," AssignmentExpression]*; /*** Low level (intrinsic-based) items ***/ Identifier,h = bspan {alpha | '_' | '$'} [{alfnum | '_' | '$'}]*; Literal,h = {NumericLiteral | StringLiteral | BooleanLiteral | NullLiteral}; NumericLiteral = {cfloat | cint | HexLiteral}; HexLiteral = {"0x" | "0X"} xdigit [xdigit]*; StringLiteral = cstring; BooleanLiteral = {"true" | "false"}; NullLiteral = "null"; } "Chau Johnthan" <chaujohnthan@hotmail.com> wrote in message news:chi7om$qb4$1@sea.gmane.org...

I am totally a newbie of boost lib, I am finding ebnf of jscript, and I wish I can gen c source of lexer, parser by using boost.

thanks.

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