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syntax.k
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syntax.k
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module C-SORTS
syntax StorageClassSpecifier
syntax Qualifier
syntax Modifier ::= StorageClassSpecifier
endmodule
module C-SYNTAX
imports C-SORTS
imports COMPAT-SORTS
imports C-REVAL-SYNTAX
imports INT-SYNTAX
imports STRING-SYNTAX
imports COMMON-SYNTAX
syntax KResult ::= SpecifierElem
syntax KItem ::= Block(Int, StrictList) [avoid]
/*
type cabsloc = {
lineno : int;
filename: string;
lineOffsetStart: int;
lineOffsetEnd : int;
systemHeader : bool;
}
*/
/*
and statement =
NOP of cabsloc
| COMPUTATION of expression * cabsloc
| BLOCK of block * cabsloc
| SEQUENCE of statement * statement * cabsloc
*/
syntax KItem ::= Nop() [symbol]
syntax KItem ::= Computation(K) [latex({{#1}};), symbol]
context Computation(HOLE:KItem => reval(HOLE)) [result(RValue)]
syntax KItem ::= "Initializer" "(" KItem ":=" KItem ")" [strict(1)]
context Initializer(_ := (HOLE:KItem => reval(HOLE))) [result(RValue)]
syntax KItem ::= Zero(KItem) [strict]
syntax KItem ::= InitPadding(KItem, CId) [strict(1)]
/*
and cvspec =
CV_CONST | CV_VOLATILE | CV_RESTRICT
*/
/*
and spec_elem =
SpecTypedef
| SpecCV of cvspec (* const/volatile *)
| SpecAttr of attribute (* __attribute__ *)
| SpecStorage of storage
| SpecInline
*/
syntax SpecifierElem ::= SpecTypedef() [symbol]
syntax SpecifierElem ::= MissingType() [symbol]
// the following are because I flattened SpecifierElem
syntax SpecifierElem ::= Modifier
syntax StorageClassSpecifier ::= AutoSpecifier
syntax Modifier ::= FunctionSpecifier
syntax FunctionSpecifier ::= Noreturn() [symbol]
| SpecExtendsTuOf(CId)
syntax Modifier ::= SpecLocalStaticOf(CId)
/*
| IF of expression * statement * statement * cabsloc
| WHILE of expression * statement * cabsloc
| DOWHILE of expression * statement * cabsloc
| FOR of for_clause * expression * expression * statement * cabsloc
*/
syntax KItem ::= IfThenElse(K, K, K) [symbol]
context IfThenElse((HOLE:KItem => reval(HOLE)), _, _) [result(RValue)]
syntax KItem ::= While(K, K) [symbol]
syntax KItem ::= DoWhile(K, K)
// Condition, post expression, body
syntax KItem ::= For(K, K, K)
/*
| BREAK of cabsloc
| CONTINUE of cabsloc
| RETURN of expression * cabsloc
*/
syntax KItem ::= Break() [symbol]
syntax KItem ::= Continue() [symbol]
syntax KItem ::= Return(K) [symbol]
context Return(HOLE:KItem => reval(HOLE)) [result(RValue)]
/*
| SWITCH of expression * statement * cabsloc
| CASERANGE of expression * expression * statement * cabsloc
*/
// unique switch id
syntax KItem ::= Switch(Int, K, K) [symbol]
context Switch(_, (HOLE:KItem => reval(HOLE)), _) [result(RValue)]
/*
| CASE of expression * statement * cabsloc
| DEFAULT of statement * cabsloc
*/
// unique switch id, unique case id, exp, statement
syntax KItem ::= Case(Int, Int, K, K) [symbol]
// unique switch id, statement
syntax KItem ::= Default(Int, K) [symbol]
/*
| LABEL of String * statement * cabsloc
*/
syntax KItem ::= Label(CId, K) [avoid, symbol]
/*
| GOTO of String * cabsloc
*/
syntax KItem ::= Goto(CId) [symbol] // CId
/*
| UNARY of unary_operator * expression
and unary_operator =
MINUS | PLUS | NOT | BNOT | MEMOF | ADDROF
| PREINCR | PREDECR | POSINCR | POSDECR
*/
syntax KItem ::= "-" K
| "+" K
| "!" K
| "~" K
| "*" K
| "&" KItem [strict]
| "++" KItem [prefer, strict]
| "--" KItem [prefer, strict, latex(\terminal{-{}-}{#1})]
| KItem "++" [prefer, strict]
| KItem "--" [prefer, strict, latex({#1}\terminal{-{}-})]
/* | BINARY of binary_operator * expression * expression */
> K "*" K [left]
| K "/" K [left]
| K "%" K [left]
> K "+" K [left]
| K "-" K [left]
> K "<<" K [left, latex({{#1}}\ll{{#2}})]
| K ">>" K [left, latex({{#1}}\gg{{#2}})]
> K "<" K [left]
| K "<=" K [left]
| K ">" K [left]
| K ">=" K [left]
> K "==" K [left]
| K "!=" K [left]
> K "&" K [left]
> K "^" K [left]
> K "|" K [left]
> K "&&" K [prefer, left]
> K "||" K [left]
/* | QUESTION of expression * expression * expression */
// Ternary operator is right-associative.
> K "?" K ":" K
[right, gather(e & E)]
> K "*=" K
| K "/=" K
| K "%=" K
| K "+=" K
| K "-=" K
| K "<<=" K
| K "&=" K
| K "^=" K
| K "|=" K
| K ">>=" K
[latex({{#1}}\terminal{$\ll$=}{{#2}})]
| K ":=" K
context - (HOLE:KItem => reval(HOLE)) [result(RValue)]
context + (HOLE:KItem => reval(HOLE)) [result(RValue)]
context ! (HOLE:KItem => reval(HOLE)) [result(RValue)]
context ~ (HOLE:KItem => reval(HOLE)) [result(RValue)]
context * (HOLE:KItem => reval(HOLE)) [result(RValue)]
context (HOLE:KItem => reval(HOLE)) * _ [ndheat, result(RValue)]
context _ * (HOLE:KItem => reval(HOLE)) [ndheat, result(RValue)]
context (HOLE:KItem => reval(HOLE)) / _ [ndheat, result(RValue)]
context _ / (HOLE:KItem => reval(HOLE)) [ndheat, result(RValue)]
context (HOLE:KItem => reval(HOLE)) % _ [ndheat, result(RValue)]
context _ % (HOLE:KItem => reval(HOLE)) [ndheat, result(RValue)]
context (HOLE:KItem => reval(HOLE)) + _ [ndheat, result(RValue)]
context _ + (HOLE:KItem => reval(HOLE)) [ndheat, result(RValue)]
context (HOLE:KItem => reval(HOLE)) - _ [ndheat, result(RValue)]
context _ - (HOLE:KItem => reval(HOLE)) [ndheat, result(RValue)]
context (HOLE:KItem => reval(HOLE)) << _ [ndheat, result(RValue)]
context _ << (HOLE:KItem => reval(HOLE)) [ndheat, result(RValue)]
context (HOLE:KItem => reval(HOLE)) >> _ [ndheat, result(RValue)]
context _ >> (HOLE:KItem => reval(HOLE)) [ndheat, result(RValue)]
context (HOLE:KItem => reval(HOLE)) < _ [ndheat, result(RValue)]
context _ < (HOLE:KItem => reval(HOLE)) [ndheat, result(RValue)]
context (HOLE:KItem => reval(HOLE)) <= _ [ndheat, result(RValue)]
context _ <= (HOLE:KItem => reval(HOLE)) [ndheat, result(RValue)]
context (HOLE:KItem => reval(HOLE)) > _ [ndheat, result(RValue)]
context _ > (HOLE:KItem => reval(HOLE)) [ndheat, result(RValue)]
context (HOLE:KItem => reval(HOLE)) >= _ [ndheat, result(RValue)]
context _ >= (HOLE:KItem => reval(HOLE)) [ndheat, result(RValue)]
context (HOLE:KItem => reval(HOLE)) == _ [ndheat, result(RValue)]
context _ == (HOLE:KItem => reval(HOLE)) [ndheat, result(RValue)]
context (HOLE:KItem => reval(HOLE)) != _ [ndheat, result(RValue)]
context _ != (HOLE:KItem => reval(HOLE)) [ndheat, result(RValue)]
context (HOLE:KItem => reval(HOLE)) & _ [ndheat, result(RValue)]
context _ & (HOLE:KItem => reval(HOLE)) [ndheat, result(RValue)]
context (HOLE:KItem => reval(HOLE)) ^ _ [ndheat, result(RValue)]
context _ ^ (HOLE:KItem => reval(HOLE)) [ndheat, result(RValue)]
context (HOLE:KItem => reval(HOLE)) | _ [ndheat, result(RValue)]
context _ | (HOLE:KItem => reval(HOLE)) [ndheat, result(RValue)]
context HOLE:KItem *= _
context _ *= (HOLE:KItem => reval(HOLE)) [result(RValue)]
context HOLE:KItem /= _
context _ /= (HOLE:KItem => reval(HOLE)) [result(RValue)]
context HOLE:KItem %= _
context _ %= (HOLE:KItem => reval(HOLE)) [result(RValue)]
context HOLE:KItem += _
context _ += (HOLE:KItem => reval(HOLE)) [result(RValue)]
context HOLE:KItem -= _
context _ -= (HOLE:KItem => reval(HOLE)) [result(RValue)]
context HOLE:KItem <<= _
context _ <<= (HOLE:KItem => reval(HOLE)) [result(RValue)]
context HOLE:KItem &= _
context _ &= (HOLE:KItem => reval(HOLE)) [result(RValue)]
context HOLE:KItem ^= _
context _ ^= (HOLE:KItem => reval(HOLE)) [result(RValue)]
context HOLE:KItem |= _
context _ |= (HOLE:KItem => reval(HOLE)) [result(RValue)]
context HOLE:KItem >>= _
context _ >>= (HOLE:KItem => reval(HOLE)) [result(RValue)]
context HOLE:KItem := _ [ndheat]
context _ := (HOLE:KItem => reval(HOLE)) [ndheat, result(RValue)]
syntax KItem ::= Cast(K, K) [klabel(Cast2)]
context Cast(HOLE:KItem, _)
context Cast(_, (HOLE:KItem => reval(HOLE))) [result(RValue)]
/*
(* There is a special form of CALL in which the function called
__builtin_va_arg and the second argument is sizeof(T). This
should be printed as just T *)
| CALL of expression * expression list
*/
syntax KItem ::= Call(KItem, KItem) [symbol]
context Call((HOLE:KItem => reval(HOLE)), _) [ndheat, result(RValue)]
/*
| MEMBEROF of expression * string
*/
syntax KItem ::= KItem "." CId [left, strict(1)]
syntax KItem ::= GnuBody(KItem) [symbol]
/*
and attribute = String * expression list
*/
// String, List
syntax KItem ::= Attribute(String, StrictList) [symbol]
endmodule