use aexp from IMP-1 instead of example exp
This commit is contained in:
@@ -18,7 +18,7 @@ language:
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sdf:
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enabled: true
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pretty-print: IBAF
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sdf2table: java
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sdf2table: c
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placeholder:
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prefix: "$"
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stratego:
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@@ -7,66 +7,97 @@ imports
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// Language "IBAFlang"
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lexical syntax // Language
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LEX-int = ( [0-9] )+
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LEX-id = ( [a-z] ) ( [a-z] | [0-9] )*
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// #1 Arithmetic expressions
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LEX-DASH = "-"
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LEX-decimal = ( [0-9] )+
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LEX-id = ( [A-Z] | [a-z] )+
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syntax // Language
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// #1 Arithmetic expressions
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context-free syntax // Language
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L-start.L-start--L-exp =
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L-exp
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L-start.L-start--L-aexp =
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L-aexp
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L-exp.L-exp--L-int =
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L-int
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L-exp.L-exp--L-id =
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// #1 Arithmetic expressions
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L-aexp.L-aexp--L-num =
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L-num
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L-aexp.L-aexp--L-id =
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L-id
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L-exp.L-exp--R-lambda-L-id-DOT-L-exp =
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"lambda" L-id "." L-exp
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L-exp.L-exp--L-exp-LPAREN-L-exp-RPAREN =
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L-exp "(" L-exp ")"
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L-exp.L-exp--R-let-L-id-EQUALS-L-exp-R-in-L-exp =
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"let" L-id "=" L-exp "in" L-exp
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L-exp.L-exp--LPAREN-L-exp-RPAREN =
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"(" L-exp ")"
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L-aexp.L-aexp--L-aexp-PLUS-L-aexp =
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L-aexp "+" L-aexp
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L-aexp.L-aexp--L-aexp-SLASH-L-aexp =
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L-aexp "/" L-aexp
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L-aexp.L-aexp--LPAREN-L-aexp-RPAREN =
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"(" L-aexp ")"
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L-int.LEX-int =
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LEX-int
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L-decimal.LEX-decimal =
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LEX-decimal
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L-id.LEX-id =
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LEX-id
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context-free syntax // Semantics
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FCT.T-start =
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"start" "[:" L-start ":]"
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FCT.T-eval =
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"eval" "[:" L-exp ":]"
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FCT-Quoted.L-int = L-int
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FCT.T-int =
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"int" "[:" L-int ":]"
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// #1 Arithmetic expressions
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FCT.T-eval-arith =
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"eval-arith" "[:" L-aexp ":]"
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FCT-Quoted.L-decimal = L-decimal
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FCT.T-int-val =
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"int-val" "[:" L-num ":]"
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FCT-Quoted.L-id = L-id
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FCT.T-id =
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"id" "[:" L-id ":]"
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context-free syntax // Desugaring
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// #1 Arithmetic expressions
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variables // Meta-variables
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L-start = "(:START" [1-9]? ":)" {prefer}
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L-start? = "(:START" [1-9]? "?:)" {prefer}
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L-start* = "(:START" [1-9]? "*:)" {prefer}
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L-start+ = "(:START" [1-9]? "+:)" {prefer}
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L-exp = "(:E" [1-9]? ":)" {prefer}
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L-exp? = "(:E" [1-9]? "?:)" {prefer}
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L-exp* = "(:E" [1-9]? "*:)" {prefer}
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L-exp+ = "(:E" [1-9]? "+:)" {prefer}
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L-int = "(:N" [1-9]? ":)" {prefer}
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L-int? = "(:N" [1-9]? "?:)" {prefer}
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L-int* = "(:N" [1-9]? "*:)" {prefer}
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L-int+ = "(:N" [1-9]? "+:)" {prefer}
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L-id = "(:X" [1-9]? ":)" {prefer}
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L-id? = "(:X" [1-9]? "?:)" {prefer}
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L-id* = "(:X" [1-9]? "*:)" {prefer}
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L-id+ = "(:X" [1-9]? "+:)" {prefer}
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// #1 Arithmetic expressions
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L-aexp = "(:AExp" [1-9]? ":)" {prefer}
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L-aexp? = "(:AExp" [1-9]? "?:)" {prefer}
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L-aexp* = "(:AExp" [1-9]? "*:)" {prefer}
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L-aexp+ = "(:AExp" [1-9]? "+:)" {prefer}
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L-num = "(:N" [1-9]? ":)" {prefer}
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L-num? = "(:N" [1-9]? "?:)" {prefer}
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L-num* = "(:N" [1-9]? "*:)" {prefer}
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L-num+ = "(:N" [1-9]? "+:)" {prefer}
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L-decimal = "(:D" [1-9]? ":)" {prefer}
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L-decimal? = "(:D" [1-9]? "?:)" {prefer}
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L-decimal* = "(:D" [1-9]? "*:)" {prefer}
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L-decimal+ = "(:D" [1-9]? "+:)" {prefer}
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L-id = "(:I" [1-9]? ":)" {prefer}
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L-id? = "(:I" [1-9]? "?:)" {prefer}
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L-id* = "(:I" [1-9]? "*:)" {prefer}
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L-id+ = "(:I" [1-9]? "+:)" {prefer}
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// SDF comments
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// #1 Arithmetic expressions
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sorts // ASTs
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T-start
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1
IBAF-Editor/trans/Stratego-IBAF.tbl
Normal file
1
IBAF-Editor/trans/Stratego-IBAF.tbl
Normal file
File diff suppressed because one or more lines are too long
@@ -13,41 +13,42 @@ imports
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rules
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to-funcons:
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|[ start[: (:E:) :] ]| ->
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|[ initialise-binding finalise-failing eval[: (:E:) :] ]|
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|[ start[: (:AExp:) :] ]| ->
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|[ initialise-binding finalise-failing eval-arith[: (:AExp:) :] ]|
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// #1 Arithmetic expressions
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to-funcons:
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|[ eval[: (:N:) :] ]| ->
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|[ int[: (:N:) :] ]|
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|[ eval-arith[: (:N:) :] ]| ->
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|[ int-val[: (:N:) :] ]|
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to-funcons:
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|[ eval[: (:X:) :] ]| ->
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|[ bound id[: (:X:) :] ]|
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|[ eval-arith[: (:I:) :] ]| ->
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|[ assigned (bound (id[: (:I:) :])) ]|
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to-funcons:
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|[ eval[: lambda(:X:).(:E:) :] ]| ->
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|[ function closure scope (bind (id[: (:X:) :],
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given),
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eval[: (:E:) :]) ]|
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|[ eval-arith[: (:AExp1:)+(:AExp2:) :] ]| ->
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|[ integer-add (eval-arith[: (:AExp1:) :],
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eval-arith[: (:AExp2:) :]) ]|
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to-funcons:
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|[ eval[: (:E1:)((:E2:)) :] ]| ->
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|[ apply (eval[: (:E1:) :],
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eval[: (:E2:) :]) ]|
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|[ eval-arith[: (:AExp1:)/(:AExp2:) :] ]| ->
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|[ checked integer-divide (eval-arith[: (:AExp1:) :],
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eval-arith[: (:AExp2:) :]) ]|
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to-funcons:
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|[ eval[: let(:X:)=(:E1:)in(:E2:) :] ]| ->
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|[ scope (bind (id[: (:X:) :],
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eval[: (:E1:) :]),
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eval[: (:E2:) :]) ]|
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to-funcons:
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|[ eval[: ((:E:)) :] ]| ->
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|[ eval[: (:E:) :] ]|
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|[ eval-arith[: ((:AExp:)) :] ]| ->
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|[ eval-arith[: (:AExp:) :] ]|
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to-funcons-lex:
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FCTDoubleQuoted(L-int(LEX-int(str))) ->
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FCTDoubleQuoted(L-decimal(LEX-decimal(str))) ->
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FCTString(<double-quote> str)
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to-funcons:
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|[ int[: (:N:) :] ]| ->
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|[ decimal \"(:N:)\" ]|
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|[ int-val[: (:D:) :] ]| ->
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|[ decimal-natural (\"(:D:)\") ]|
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to-funcons:
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|[ int-val[: -(:D:) :] ]| ->
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|[ integer-negate (int-val[: (:D:) :]) ]|
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to-funcons-lex:
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FCTDoubleQuoted(L-id(LEX-id(str))) ->
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FCTString(<double-quote> str)
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to-funcons:
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|[ id[: (:X:) :] ]| ->
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|[ \"(:X:)\" ]|
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|[ id[: (:I:) :] ]| ->
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|[ \"(:I:)\" ]|
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@@ -1,5 +1,8 @@
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module ibaf
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imports
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generate
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imports
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libstratego-lib
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@@ -16,6 +19,3 @@ rules // Debugging
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with
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filename := <guarantee-extension(|"aterm")> path
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; result := node
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imports
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generate
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@@ -1,47 +1,55 @@
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Language "IBAFlang"
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Syntax START:start ::= exp
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Syntax START:start ::= aexp
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Semantics start[[ _:start ]] : =>values
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Rule start[[ E ]] =
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initialise-binding finalise-failing eval[[ E ]]
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Syntax E:exp ::= int
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| id
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| 'lambda' id '.' exp
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| exp '(' exp ')'
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| 'let' id '=' exp 'in' exp
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| '(' exp ')'
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Semantics eval[[ _:exp ]] : => values
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Rule eval[[ N ]] = int[[ N ]]
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Rule eval[[ X ]] = bound id[[ X ]]
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Rule eval[[ 'lambda' X '.' E ]] =
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function closure
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scope( bind( id[[ X ]], given ),
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eval[[ E ]] )
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Rule eval[[ E1 '(' E2 ')' ]] =
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apply( eval[[ E1 ]], eval[[ E2 ]] )
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Rule eval[[ 'let' X '=' E1 'in' E2 ]] =
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scope( bind( id[[ X ]], eval[[ E1 ]] ),
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eval[[ E2 ]] )
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Rule eval[[ '(' E ')' ]] = eval[[ E ]]
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Rule start[[ AExp ]] =
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initialise-binding
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finalise-failing
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eval-arith[[ AExp ]]
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Lexis N:int ::= ('0'-'9')+
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Semantics int[[ N:int ]] : => integers
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= decimal \"N\"
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#1 Arithmetic expressions
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Lexis X:id ::= ('a'-'z') ('a'-'z'|'0'-'9')*
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Syntax
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AExp : aexp ::= num
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| id
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| aexp '+' aexp
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| aexp '/' aexp
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| '(' aexp ')'
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Semantics
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eval-arith[[ _:aexp ]] : =>integers
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Rule
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eval-arith[[ N ]] = int-val[[ N ]]
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Rule
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eval-arith[[ I ]] = assigned(bound(id[[ I ]]))
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Rule
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eval-arith[[ AExp1 '+' AExp2 ]] =
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integer-add(eval-arith[[ AExp1 ]], eval-arith[[ AExp2 ]])
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Rule
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eval-arith[[ AExp1 '/' AExp2 ]] =
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checked integer-divide(eval-arith[[ AExp1 ]], eval-arith[[ AExp2 ]])
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Rule
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eval-arith[[ '(' AExp ')' ]] = eval-arith[[ AExp ]]
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Syntax
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N : num ::= '-'?_decimal
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Lexis
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D : decimal ::= ('0'-'9')+
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Semantics
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int-val[[ _:num ]] : integers
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Rule
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int-val[[ D ]] = decimal-natural(\"D\")
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Rule
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int-val[[ '-' D ]] = integer-negate(int-val[[ D ]])
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Lexis
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I : id ::= ('A'-'Z'|'a'-'z')+
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Semantics
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id[[ _:id ]] : ids
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Rule
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id[[ I ]] = \"I\"
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Semantics id[[ X:id ]] : => identifiers
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= \"X\"
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