On 19 Sep 2017, at 15:37, Gustavo Santos <gugajansen@gmail.com> wrote:

Hi all,

I don't know if someone already did this but I was working with SmaCC from scratch

so I did a very simple parser for MSE files. It parses all right with a Java model

although I need to check and specialize the grammar for what I intend to do.

Cheers,

----

%start Model ;

%left <close>;

%glr;

<whitespace> : \s+ ;

<eol> : \r | \n | \r\n ;

<letter> : [a-zA-Z_] ;

<digit> : [0-9] ;

<integer> : \-? <digit>+ ;

<number> : \-? <digit>+ ( \. <digit>+ ) ? ( [eE] ( \- | \+ ) ? <digit>+ ) ? ;

<string> : \' [^\']* \' (\' [^\']* \')* ;

<boolean> : true | false ;

<open> : \( ;

<close> : \) ;

<simpleName> : <letter> ( <letter> | <digit> ) * ;

<qualifiedName> : <letter> ( <letter> | <digit> ) * ( \. <letter> ( <letter> | <digit> ) * ) * ;

Model : <open> ElementNodes <close> ;

ElementNodes : ElementNode | ElementNode ElementNodes ;

ElementNode : <open> Name Identifier AttributeNodes <close> ;

Identifier : <open> IdentifierToken Integer <close> ;

IdentifierToken : "id:" 'refToken';

AttributeNodes : | AttributeNode AttributeNodes ;

AttributeNode : <open> SimpleName ValueNodes <close> ;

ValueNodes : ValueNode | ValueNode ValueNodes ;

ValueNode : Primitive | Reference ;

Primitive : String | Integer | Number | Boolean ;

Reference : IntegerReference | NameReference ;

IntegerReference : <open> ReferenceToken Integer <close>;

NameReference : <open> ReferenceToken QualifiedName <close>;

ReferenceToken : "ref:" 'refToken';

Integer : <integer> 'integer';

Number : <number> 'number' ;

String: <string> 'string';

Boolean: <boolean> 'boolean';

Name : SimpleName | QualifiedName ;

SimpleName : <simpleName> 'simpleName';

QualifiedName : <qualifiedName> 'qualifiedName';

--

Gustavo Santos

http://gustavojss.github.io/

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