Monday, November 29, 2010

Design Decisions

In the rather minute space I have in moving around in the operational semantics, one thing is clear: I need a symbol table. Not in the traditional sense of mapping symbols to meaning but just as a hashmap mapping strings to integers such that the compiler can compare faster.

Now, there seems to be three ways of going around this: A) Add a map purely functional such that not only an AST is passed around but also the symbol table. B) Add an impure map in a module by extending the language semantics with support for updateable arrays and strings. C) Add an impure map in a module by interfacing with C.

Option C has the least impact on the language...

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