Data definitions with AST

  can collaborate with AST (or CG), the tools from the compiler toolbox Cocktail. can read one or more data specification modules in AST-format and use them as definition of node and edge types. Note that either AST- or CoSy-fSDL-mode can be used, mixed mode does not work. A user may tell in several ways whether/which AST-modules he wants to use.

• AST files can be handed over as normal input files, if they consist only of AST-modules. Then automatically recognizes them as AST code and parses them:

  
  
  

  Note that the first input file determines the name of the output file; thus AST-files should be given as later arguments.

• Alternatively, the user may specify one or more command line flags -ast <file> then this/these file(s) are parsed to find the AST data definitions. Example:

  
  
  

• The user can write a use-clause for a file in the -specification (on the same syntactic level as GRS/EARS). This clause has the form

  
  
  

  StringList is a list of space-separated strings, which indicate file names which has to open and to read. Thus, if an specification is dependent on some files, the user may give these dependencies in the -file. After reading the -file will read the files of the use clause.

In AST-mode, code is generated in plain C (without access functions). The sol-library is used for the available functors (graph and set template classes, file sollib.ps).