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The semantics of CakeML The *.lem files are specified in Lem source (http://www.cs.kent.ac.uk/~sao/lem/), and the corresponding *Script.sml files are the HOL source generated from them by Lem. lib.lem Setup some HOL library in Lem, and define environments and lookup. lexer_funScript.sml A functional specification of a lexing from strings to token lists. tokens.lem The tokens. tokenUtilsScript.sml Some theorems about tokens that the grammar needs. gramScript.sml The grammar that specifies how token lists should be converted to concrete syntax trees cmlPtreeConversionScript.sml Functions to convert the concrete syntax tree into a parsing AST. Removes some syntactic sugar. ast.lem Defines the AST. typeSystem.lem Specifies the type system. semanticPrimitives.lem Definitions of semantic primitives (e.g., values, and functions for doing primitive operations) that are use in both the big-step and small-step semantics. smallStep.lem A small-step semantics based on the CEKS machine. Only for expressions. bigStep.lem A big-step semantics. For modules, definitions, and expressions. The big-step and small-step semantics are proven equivalent in the metatheory directory. funBigStep.lem A clocked functional version of the big-step semantics. (This version will eventually be used as the main semantics.) terminationScript.sml Termination proofs for recursive functions defined in the .lem files. initialProgram.lem CakeML ASTs that define the initial basis environment. printScript.sml Specifies printing of results. replScript.sml Pulls everything together into a semantics for the CakeML REPL. standaloneScript.sml Pulls everything together into a semantics for whole CakeML programs. proofs/ Proofs of basic properties of the semantics, including determinism and a clocked interpreter.