376 lines
5.9 KiB
BNF
376 lines
5.9 KiB
BNF
right_assoc(item,op) ::=
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item
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| item op right_assoc(item,op)
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left_assoc(item,op) ::=
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right_assoc(item,op)
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option(item) :=
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(**)
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| item
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series(item,sep,term) ::=
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item after_item(item,sep,term)
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after_item(item,sep,term) ::=
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sep item_or_closing(item,sep,term)
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| term
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item_or_closing(item,sep,term) ::=
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term
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| series(item,sep,term)
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(* Compound constructs *)
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par(item) ::=
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LPAR item RPAR
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brackets(item) ::=
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LBRACKET item RBRACKET
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(* Sequences *)
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(* Possibly empty sequence of items *)
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seq(item) ::=
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option(nseq(item))
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(* Non-empty sequence of items *)
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nseq(item) ::=
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item seq(item)
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(* Non-empty separated sequence of items *)
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nsepseq(item,Sep) ::=
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item
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| item Sep nsepseq(item,Sep)
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(* Possibly empty separated sequence of items *)
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sepseq(item,Sep) ::=
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option(nsepseq(item,Sep))
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(* Main *)
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contract ::=
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nseq(declaration) EOF
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declaration ::=
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type_decl option(SEMI)
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| const_decl option(SEMI)
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| lambda_decl option(SEMI)
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(* Type declarations *)
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type_decl ::=
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Type Ident (* type_name *) Is type_expr
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type_expr ::=
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cartesian
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| sum_type
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| record_type
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cartesian ::=
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nsepseq(function_type,TIMES)
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function_type ::=
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right_assoc(core_type,ARROW)
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core_type ::=
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Ident (* type_name *)
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| Ident (* type_name *) type_tuple
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| Map type_tuple
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| Set par(type_expr)
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| List par(type_expr)
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| par(type_expr)
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type_tuple ::=
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par(nsepseq(type_expr,COMMA))
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sum_type ::=
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nsepseq(variant,VBAR)
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| VBAR nsepseq(variant,VBAR)
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variant ::=
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Constr Of cartesian
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| Constr
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record_type ::=
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Record series(field_decl,SEMI,End)
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| Record LBRACKET series(field_decl,SEMI,RBRACKET)
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field_decl ::=
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Ident (* field_name *) COLON type_expr
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(* Function and procedure declarations *)
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lambda_decl ::=
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fun_decl
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| proc_decl
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| entry_decl
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fun_decl ::=
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Function Ident (* fun_name *) parameters COLON type_expr Is
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seq(local_decl)
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block
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With expr
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entry_decl ::=
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Entrypoint Ident (* fun_name *) entry_params COLON type_expr Is
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seq(local_decl)
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block
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With expr
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entry_params ::=
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par(nsepseq(entry_param_decl,SEMI))
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proc_decl ::=
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Procedure Ident (* fun_name *) parameters Is
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seq(local_decl)
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block
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parameters ::=
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par(nsepseq(param_decl,SEMI))
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param_decl ::=
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Var Ident (* var *) COLON param_type
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| Const Ident (* var *) COLON param_type
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entry_param_decl ::=
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param_decl
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| Storage Ident (* var *) COLON param_type
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param_type ::=
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cartesian
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block ::=
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Begin series(statement,SEMI,End)
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| Block LBRACE series(statement,SEMI,RBRACE)
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statement ::=
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instruction
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| data_decl
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data_decl ::=
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const_decl
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| var_decl
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const_decl ::=
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Const unqualified_decl(EQUAL)
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var_decl ::=
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Var unqualified_decl(ASS)
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local_decl ::=
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fun_decl option(SEMI)
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| proc_decl option(SEMI)
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| data_decl option(SEMI)
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unqualified_decl(op) ::=
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Ident (* var *) COLON type_expr op expr
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instruction ::=
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single_instr
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| block
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single_instr ::=
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If expr Then if_clause option(SEMI) Else if_clause
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| case(instruction)
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| Ident (* proc_name *) arguments
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| Ident ASS expr
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| Ident brackets(expr) ASS expr
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| Ident DOT nsepseq(selection,DOT) option(brackets(expr)) ASS expr
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| loop
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| Fail expr
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| Skip
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| Patch path With structure
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| Remove expr From Map path
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| Remove expr From Set path
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injection(Kind,element) ::=
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Kind series(element,SEMI,End)
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| Kind End
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| Kind LBRACKET bracketed(element)
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bracketed(element) ::=
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series(element,SEMI,RBRACKET)
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| RBRACKET
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binding ::=
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expr ARROW expr
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if_clause ::=
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instruction
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| LBRACE series(statement,COMMA,RBRACE)
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case(rhs) ::=
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Case expr Of cases(rhs) End
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| Case expr Of LBRACKET cases(rhs) RBRACKET
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cases(rhs) ::=
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nsepseq(case_clause(rhs),VBAR)
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| VBAR nsepseq(case_clause(rhs),VBAR)
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case_clause(rhs) ::=
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pattern ARROW rhs
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loop ::=
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while_loop
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| for_loop
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while_loop ::=
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While expr block
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for_loop ::=
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For Ident ASS expr option(Down) To expr option(step_clause) block
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| For Ident In expr block
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| For Ident ARROW Ident In expr block
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step_clause ::=
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Step expr
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(* Expressions *)
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interactive_expr ::=
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expr EOF
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expr ::=
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case(expr)
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| disj_expr
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disj_expr ::=
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left_assoc(conj_expr,Or)
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conj_expr ::=
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left_assoc(set_membership,And)
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set_membership ::=
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core_expr Contains set_membership
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| comp_expr
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comp_expr ::=
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left_assoc(cat_expr,op_comp)
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op_comp ::=
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LT | LEQ | GT | GEQ | EQUAL | NEQ
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cat_expr ::=
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right_assoc(cons_expr,CAT)
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cons_expr ::=
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left_assoc(add_expr,CONS)
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add_expr ::=
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left_assoc(mult_expr,add_op)
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add_op ::=
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PLUS | MINUS
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mult_expr ::=
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left_assoc(unary_expr,mult_op)
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mult_op ::=
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TIMES | SLASH | Mod
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unary_expr ::=
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MINUS core_expr
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| Not core_expr
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| core_expr
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core_expr ::=
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Int
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| Nat
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| Mutez
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| Ident (* var *)
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| Ident (* var *) brackets(expr) (* lookup *)
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| Ident (* struct_name *) DOT nsepseq(selection,DOT) brackets(expr) (* lookup *)
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| Ident (* struct_name *) DOT nsepseq(selection,DOT)
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| String
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| Bytes
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| C_False
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| C_True
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| C_Unit
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| annot_expr
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| tuple_expr
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| list_expr
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| C_None
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| fun_call
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| structure
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| Constr arguments
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| Constr
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| C_Some arguments
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annot_expr ::=
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LPAR disj_expr COLON type_expr RPAR
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structure ::=
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injection(Map,binding)
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| injection(Set,expr)
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| record_expr
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path ::=
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Ident (* var *)
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| Ident (* struct_name *) DOT nsepseq(selection,DOT)
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selection ::=
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Ident (* field_name *)
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| Int
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record_expr ::=
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Record series(field_assignment,SEMI,End)
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| Record LBRACKET series(field_assignment,SEMI,RBRACKET)
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field_assignment ::=
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Ident (* field_name *) EQUAL expr
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fun_call ::=
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Ident (* fun_name *) arguments
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tuple_expr ::=
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tuple_inj
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tuple_inj ::=
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par(nsepseq(expr,COMMA))
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arguments ::=
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tuple_inj
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list_expr ::=
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injection(List,expr)
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| Nil
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(* Patterns *)
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pattern ::=
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nsepseq(core_pattern,CONS)
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core_pattern ::=
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Ident (* var *)
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| WILD
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| Int
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| String
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| C_Unit
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| C_False
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| C_True
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| C_None
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| list_pattern
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| tuple_pattern
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| constr_pattern
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| C_Some par(core_pattern)
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list_pattern ::=
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injection(List,core_pattern)
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| Nil
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| par(cons_pattern)
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cons_pattern ::=
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core_pattern CONS pattern
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tuple_pattern ::=
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par(nsepseq(core_pattern,COMMA))
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constr_pattern ::=
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Constr tuple_pattern
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| Constr
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