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Adjustments to new LFSC grammar. #53

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Adjustments to new LFSC grammar. #53

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957f4b2
modify LFSC 1.5 grammar to what rlfsc's "sugar" branch currently impl…
alex-ozdemir Dec 8, 2020
a834b33
Update 'assuming' form
alex-ozdemir Dec 9, 2020
eeae386
Post-discussion changes:
alex-ozdemir Dec 14, 2020
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19 changes: 11 additions & 8 deletions doc/lfsc1_5.g4
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Original file line number Diff line number Diff line change
Expand Up @@ -17,8 +17,10 @@ command
| '(' 'run' code ')'
| '(' 'program' iden '(' typed_par+ ')' type code ')'
// Extension /////////////////////////////////
| '(' 'declare-type' iden '(' type* ')' ')'
| '(' 'declare-rule' iden ( ntype | vtype )+ type ')' ')'
| '(' 'declare-type' iden decl_list ')'
| '(' 'declare-rule' iden decl_list type ')'
| '(' 'define-const' iden decl_list term ')'
| '(' 'check-assuming' decl_list type term ')'
//////////////////////////////////////////////
;
// (declare-type c (τ₁ ⋯ τᵢ)) with i > 0
Expand All @@ -33,6 +35,8 @@ command
// is equivalent to
// (declare r (-> r ν₁ ⋯ νᵢ τ))

decl_list : '(' (ntype | vtype)* ')';

iden : ID ;

kind
Expand Down Expand Up @@ -78,7 +82,7 @@ ntype
// (^ c t)

// Extension /////////////////////
vtype : '(' 'var' iden ntype ')' ;
vtype : '(' ':' iden ntype ')' ;
//////////////////////////////////

type
Expand All @@ -89,7 +93,7 @@ type
| '(' '!' iden ntype type ')'
// Extension ///////////////////////////////
| '(' 'Forall' iden ntype type ')'
| '(' '->' ( ntype | vtype )+ type ')'
| '(' '->' decl_list type ')'
////////////////////////////////////////////
;
// (Forall ξ τ₁ τ₂)
Expand Down Expand Up @@ -117,14 +121,13 @@ term
| rat_const
| '(' term term+ ')'
| '(' '\\' iden term ')'
| '(' '@' iden term ')'
| '(' '@' iden term term ')'
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I think was just a typo.

| '(' ':' type term ')'
// Deprecated
| '(' '%' iden type term ')'
// Extensions ///////////////////
| '(' 'lam' iden term ')'
| '(' 'let' iden term term ')'
| '(' 'proved-by' type term ')'
| '(' 'assuming' vtype+ term ')'
;
//////////////////////////////////
// (lam ξ t)
Expand Down Expand Up @@ -167,4 +170,4 @@ code
INT : [0-9]+ ;
RAT : ('0' | [1-9][0-9]*) '/' [1-9][0-9]* ;
ID : [a-zA-Z~!@$%^&*_\-+=<>.?/][a-zA-Z0-9~!@$%^&*_\-+=<>.?/]* ;
KW : ':'[a-zA-Z0-9~!@$%^&*_\-+=<>.?/]* ;
KW : ':'[a-zA-Z0-9~!@$%^&*_\-+=<>.?/]* ;