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author | Son Ho | 2022-01-19 11:54:50 +0100 |
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committer | Son Ho | 2022-01-19 11:54:50 +0100 |
commit | 3831e9176d4f0a3b3af161eca3e5f709ce0dce6d (patch) | |
tree | f28e7ce5b1174ba7510d2cf0d83dd0a7d32b6c88 /src | |
parent | 66d582bf1fbe78f892583af1da48188a61d0daff (diff) |
Start working on Pure.ml
Diffstat (limited to 'src')
-rw-r--r-- | src/Pure.ml | 103 | ||||
-rw-r--r-- | src/main.ml | 1 |
2 files changed, 104 insertions, 0 deletions
diff --git a/src/Pure.ml b/src/Pure.ml new file mode 100644 index 00000000..4201c4b6 --- /dev/null +++ b/src/Pure.ml @@ -0,0 +1,103 @@ +open Identifiers +module T = Types +module V = Values +module E = Expressions +module A = CfimAst +module TypeVarId = T.TypeVarId +module RegionId = T.RegionId +module VariantId = T.VariantId +module FieldId = T.FieldId +module SymbolicValueId = V.SymbolicValueId + +module SynthPhaseId = IdGen () +(** We give an identifier to every phase of the synthesis (forward, backward + for group of regions 0, etc.) *) + +module BackwardFunId = IdGen () +(** Every backward function has its identifier *) + +type ty = + | Adt of T.type_id * ty list + (** [Adt] encodes ADTs, tuples and assumed types. + + TODO: what about the ended regions? + *) + | TypeVar of TypeVarId.id + | Bool + | Char + | Never + | Integer of T.integer_type + | Str + | Array of ty (* TODO: there should be a constant with the array *) + | Slice of ty + +type scalar_value = V.scalar_value + +type constant_value = V.constant_value + +type symbolic_value = { + sv_id : SymbolicValueId.id; + sv_ty : ty; + sv_rty : T.rty; + sv_ended_regions : RegionId.Set.t; + (** We need to remember what was the set of ended regions at the time the + symbolic value was introduced. + *) +} + +type value = + | Concrete of constant_value + | Adt of adt_value + | Symbolic of symbolic_value + +and adt_value = { + variant_id : (VariantId.id option[@opaque]); + field_values : typed_value list; +} + +and typed_value = { value : value; ty : ty } + +type projection_elem = { pkind : E.field_proj_kind; field_id : FieldId.id } + +type projection = projection_elem list + +type operand = typed_value + +type assertion = { cond : operand; expected : bool } + +type fun_id = + | Local of A.FunDefId.id * BackwardFunId.id option + (** Backward id: `Some` if the function is a backward function, `None` + if it is a forward function *) + | Assumed of A.assumed_fun_id + | Unop of E.unop + | Binop of E.binop + +type call = { func : fun_id; type_params : ty list; args : operand list } + +type let_bindings = { call : call; bindings : symbolic_value list } + +(** **Rk.:** here, [expression] is not at all equivalent to the expressions + used in CFIM. They are lambda-calculus expressions, and are thus actually + more general than the CFIM statements, in a sense. + *) +type expression = + | Let of let_bindings * expression + (** Let bindings include the let-bindings introduced because of function calls *) + | Assert of assertion + | Return of typed_value + | Panic of SynthPhaseId.id + | Nop + | Sequence of expression * expression + | Switch of operand * switch_body + +and switch_body = + | If of expression * expression + | SwitchInt of T.integer_type * (scalar_value * expression) list * expression + | Match of match_branch list + +and match_branch = { + variant_id : VariantId.id; + vars : symbolic_value list; + branch : expression; +} diff --git a/src/main.ml b/src/main.ml index df9134e0..54536503 100644 --- a/src/main.ml +++ b/src/main.ml @@ -6,6 +6,7 @@ module A = CfimAst module I = Interpreter module EL = Easy_logging.Logging module TA = TypesAnalysis +module P = Pure (* This is necessary to have a backtrace when raising exceptions - for some * reason, the -g option doesn't work. |