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module examples::modfun::Syntax

rascal-0.34.0
typepal-0.8.10

Usage​

import examples::modfun::Syntax;

Source code​

http://github.com/usethesource/typepal/src/examples/modfun/Syntax.rsc

Dependencies​

extend examples::fun::Syntax;

syntax ModId​

lexical ModId   = ([A-Z][a-z0-9]* !>> [a-z0-9]) \ Reserved;

syntax Reserved​

keyword Reserved = "module" | "import" | "def";

syntax ModFun​

start syntax ModFun 
    = ModuleDecl* modules
    ;

syntax ModuleDecl​

syntax ModuleDecl
    = "module" ModId mid  "{" Decl* decls "}"
    ;

syntax Decl​

syntax Decl
    = ImportDecl importDecl
    | VarDecl varDecl
    ;

syntax ImportDecl​

syntax ImportDecl
    = "import" ModId mid ";"
    ;

syntax VarDecl​

syntax VarDecl
    = "def" Id id ":" Type tp "=" Expression expression ";"
    ;