/
Parser.y
407 lines (346 loc) · 15.6 KB
/
Parser.y
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{
module Parser where
import Lexer
import Error
}
%name pProgram Program
%monad { Err } { thenM } { returnM }
%tokentype {Token}
%token
':' { Token _ (TokenSymbols ":") }
'!' { Token _ (TokenSymbols "!") }
'!=' { Token _ (TokenSymbols "!=") }
'%' { Token _ (TokenSymbols "%") }
'&' { Token _ (TokenSymbols "&") }
'&&' { Token _ (TokenSymbols "&&") }
'(' { Token _ (TokenSymbols "(") }
')' { Token _ (TokenSymbols ")") }
'*' { Token _ (TokenSymbols "*") }
'*=' { Token _ (TokenSymbols "*=") }
'+' { Token _ (TokenSymbols "+") }
'++' { Token _ (TokenSymbols "++") }
'+=' { Token _ (TokenSymbols "+=") }
',' { Token _ (TokenSymbols ",") }
'-' { Token _ (TokenSymbols "-") }
'--' { Token _ (TokenSymbols "--") }
'-=' { Token _ (TokenSymbols "-=") }
'/' { Token _ (TokenSymbols "/") }
'/=' { Token _ (TokenSymbols "/=") }
';' { Token _ (TokenSymbols ";") }
'<' { Token _ (TokenSymbols "<") }
'<=' { Token _ (TokenSymbols "<=") }
'<-' { Token _ (TokenSymbols "<-") }
'=' { Token _ (TokenSymbols "=") }
'==' { Token _ (TokenSymbols "==") }
'>' { Token _ (TokenSymbols ">") }
'>=' { Token _ (TokenSymbols ">=") }
'=>' { Token _ (TokenSymbols "=>") }
'to' { Token _ (TokenSymbols "to") }
'ex' { Token _ (TokenSymbols "ex") }
'case' { Token _ (TokenSymbols "case") }
'try' { Token _ (TokenSymbols "try") }
'catch' { Token _ (TokenSymbols "catch") }
'false' { Token _ (TokenSymbols "false") }
'true' { Token _ (TokenSymbols "true") }
'[' { Token _ (TokenSymbols "[") }
']' { Token _ (TokenSymbols "]") }
'^' { Token _ (TokenSymbols "^") }
'bool' { Token _ (TokenSymbols "Boolean") }
'break' { Token _ (TokenSymbols "break") }
'char' { Token _ (TokenSymbols "Char") }
'continue' { Token _ (TokenSymbols "continue") }
'else' { Token _ (TokenSymbols "else") }
'float' { Token _ (TokenSymbols "Float") }
'if' { Token _ (TokenSymbols "if") }
'int' { Token _ (TokenSymbols "Int") }
'string' { Token _ (TokenSymbols "String") }
'array' { Token _ (TokenSymbols "Array") }
'return' { Token _ (TokenSymbols "return") }
'val' { Token _ (TokenSymbols "val") }
'var' { Token _ (TokenSymbols "var") }
'valres' { Token _ (TokenSymbols "valres") }
'unit' { Token _ (TokenSymbols "Unit") }
'while' { Token _ (TokenSymbols "while") }
'for' { Token _ (TokenSymbols "for") }
'def' { Token _ (TokenSymbols "def") }
'{' { Token _ (TokenSymbols "{") }
'}' { Token _ (TokenSymbols "}") }
'||' { Token _ (TokenSymbols "||") }
Int { Token _ (TokenInt _) }
Char { Token _ (TokenChar _) }
String { Token _ (TokenAlpha _) }
Double { Token _ (TokenDouble _) }
Ident { Token _ (TokenIdent _) }
%left '||' '&&'
%left '!'
%nonassoc '<' '>' '<=' '<-' '>=' '=>' '==' '!='
%left '+' '-'
%left '*' '/' '%'
%right '^'
%left NEG '&'
%left '++' '--'
%%
BasicType :: {AbsNode}
: 'bool' { BasicTypeNode (tpos $1) (BType "Boolean") }
| 'char' { BasicTypeNode (tpos $1) (BType "Char") }
| 'float' { BasicTypeNode (tpos $1) (BType "Float") }
| 'int' { BasicTypeNode (tpos $1) (BType "Int") }
| 'unit' { BasicTypeNode (tpos $1) (BType "Unit") }
| 'string' { BasicTypeNode (tpos $1) (BType "String") }
RExpr :: {AbsNode}
: RExpr '||' RExpr { RExprNode (pos $1) (OpBoolean $1 $3 "||") }
| RExpr '&&' RExpr { RExprNode (pos $1) (OpBoolean $1 $3 "&&") }
| '!' RExpr { RExprNode (tpos $1) (Not $2) }
| RExpr '==' RExpr { RExprNode (pos $1) (OpRelation $1 $3 "==") }
| RExpr '!=' RExpr { RExprNode (pos $1) (OpRelation $1 $3 "!=") }
| RExpr '<' RExpr { RExprNode (pos $1) (OpRelation $1 $3 "<") }
| RExpr '<=' RExpr { RExprNode (pos $1) (OpRelation $1 $3 "<=") }
| RExpr '>' RExpr { RExprNode (pos $1) (OpRelation $1 $3 ">") }
| RExpr '>=' RExpr { RExprNode (pos $1) (OpRelation $1 $3 ">=") }
| RExpr '+' RExpr { RExprNode (pos $1) (OpAritm $1 $3 "+") }
| RExpr '-' RExpr { RExprNode (pos $1) (OpAritm $1 $3 "-") }
| RExpr '*' RExpr { RExprNode (pos $1) (OpAritm $1 $3 "*") }
| RExpr '/' RExpr { RExprNode (pos $1) (OpAritm $1 $3 "/") }
| RExpr '%' RExpr { RExprNode (pos $1) (OpAritm $1 $3 "%") }
| RExpr '^' RExpr { RExprNode (pos $1) (OpAritm $1 $3 "^") }
| '-' RExpr %prec NEG { RExprNode (tpos $1) (Neg $2) }
| '&' LExpr { RExprNode (tpos $1) (Ref $2) }
| FunCall { RExprNode (pos $1) (FCall $1) }
| Int { RExprNode (tpos $1) (Int (read (prToken $1)::Int)) }
| Char { RExprNode (tpos $1) (Char (head (tail(prToken $1)))) }
| String { RExprNode (tpos $1) (String (prToken $1)) }
| Double { RExprNode (tpos $1) (Float (read (prToken $1)::Double)) }
| 'true' { RExprNode (tpos $1) (Bool Boolean_True) }
| 'false' { RExprNode (tpos $1) (Bool Boolean_False) }
| '(' RExpr ')' { $2 }
| LExpr { RExprNode (pos $1) (Lexpr $1) }
LExpr :: {AbsNode}
: '*' RExpr { LExprNode (tpos $1) (Deref $2) }
| '++' LExpr { LExprNode (tpos $1) (PreIncrDecr $2 "+") }
| '--' LExpr { LExprNode (tpos $1) (PreIncrDecr $2 "-") }
| LExpr '++' { LExprNode (pos $1) (PostIncrDecr $1 "+") }
| LExpr '--' { LExprNode (pos $1) (PostIncrDecr $1 "-") }
| '(' LExpr ')' { $2 }
| BLExpr { LExprNode (pos $1) (BasLExpr $1) }
FunCall :: {AbsNode}
: Ident '(' ListRExpr ')' { FunCallNode (tpos $1) (Call (Ident (prToken $1)) $3) }
ListRExpr
: {- empty -} { [] }
| RExpr { (:[]) $1 }
| RExpr ',' ListRExpr { (:) $1 $3 }
BLExpr :: {AbsNode}
: BLExpr '[' RExpr ']' { BLExprNode (pos $1) (ArrayEl $1 $3) }
| Ident { BLExprNode (tpos $1) (Id (Ident (prToken $1))) }
Program :: {AbsNode}
: ListDecl { ProgramNode (Pn 1 1) (Prog (reverse $1)) }
ListDecl
: {- empty -} { [] }
| ListDecl Decl { flip (:) $1 $2 }
Decl :: {AbsNode}
: ModalityDecl Ident ':' BasicType '=' ComplexRExpr ';' { DeclNode (pos $1) (DvarBInit $1 (Ident (prToken $2)) $4 $6) }
| ModalityDecl Ident ':' TypeSpec '=' ComplexRExpr ';' { DeclNode (pos $1) (DvarCInit $1 (Ident (prToken $2)) $4 $6) }
| 'def' Ident '(' ListParameter ')' ':' BasicType '=' '{' CompStmt ReturnStmt '}' { DeclNode (tpos $1) (Dfun (Ident (prToken $2)) $4 $7 $10 $11) }
TypeSpec :: {AbsNode}
: BasicType { TypeSpecNode (pos $1) (BasTyp $1) }
| CompoundType { TypeSpecNode (pos $1) (CompType $1) }
CompoundType :: {AbsNode}
: 'array' '[' TypeSpec ']' '(' Int ')' { CompoundTypeNode (tpos $1) (ArrDef $3 (read (prToken $6)::Int)) }
| '*' TypeSpec { CompoundTypeNode (tpos $1) (Pointer $2) }
ComplexRExpr :: {AbsNode}
: RExpr { ComplexRExprNode (pos $1) (Simple $1) }
| 'array' '(' ListComplexRExpr ')' { ComplexRExprNode (tpos $1) (Array $3) }
ListComplexRExpr : ComplexRExpr { (:[]) $1 }
| ComplexRExpr ',' ListComplexRExpr { (:) $1 $3 }
ListParameter
: {- empty -} { [] }
| Parameter { (:[]) $1 }
| Parameter ',' ListParameter { (:) $1 $3 }
Parameter :: {AbsNode}
: ModalityParam Ident ':' TypeSpec { ParameterNode (pos $1) (Param $1 (Ident (prToken $2)) $4) }
ModalityDecl :: {AbsNode}
: 'val' { ModalityDeclNode (tpos $1) ModalityD_val }
| 'var' { ModalityDeclNode (tpos $1) ModalityD_var }
ModalityParam :: {AbsNode}
: {- empty -} { ModalityParamNode (Pn 0 0) ModalityPEmpty }
| 'val' { ModalityParamNode (tpos $1) ModalityP_val }
| 'valres' { ModalityParamNode (tpos $1) ModalityP_valres }
| 'var' { ModalityParamNode (tpos $1) ModalityP_var }
CompStmt :: {AbsNode}
: ListDecl ListStmt { CompStmtNode (Pn 0 0) (BlockDecl (reverse $1) (reverse $2)) }
ListStmt
: {- empty -} { [] }
| ListStmt Stmt { flip (:) $1 $2 }
Stmt :: {AbsNode}
: '{' CompStmt '}' { StmtNode (tpos $1) (Comp $2) }
| FunCall ';' { StmtNode (pos $1) (ProcCall $1) }
| JumpStmt ';' { StmtNode (pos $1) (Jmp $1) }
| IterStmt { StmtNode (pos $1) (Iter $1) }
| SelectionStmt { StmtNode (pos $1) (Sel $1) }
| LExpr Assignment_op RExpr ';' { StmtNode (pos $1) (Assgn $1 $2 $3) }
| LExpr ';' { StmtNode (pos $1) (LExprStmt $1) }
| TryCatchStmt { StmtNode (pos $1) (ExHandler $1)}
TryCatchStmt :: {AbsNode}
: 'try' Stmt 'catch' '{' 'case' 'ex' ':' Ident '=>' Stmt '}' { TryCatchStmtNode (tpos $1) (TryCatch $2 (Ident (prToken $8)) $10) }
Assignment_op :: {AbsNode}
: '=' { Assignment_opNode (tpos $1) Assign }
| '*=' { Assignment_opNode (tpos $1) (AssignOp "*") }
| '+=' { Assignment_opNode (tpos $1) (AssignOp "+") }
| '/=' { Assignment_opNode (tpos $1) (AssignOp "/") }
| '-=' { Assignment_opNode (tpos $1) (AssignOp "-") }
JumpStmt :: {AbsNode}
: 'break' { JumpStmtNode (tpos $1) Break }
| 'continue' { JumpStmtNode (tpos $1) Continue }
ReturnStmt :: {AbsNode}
: 'return' ';' { ReturnStmtNode (tpos $1) RetExpVoid }
| 'return' '(' RExpr ')' ';' { ReturnStmtNode (tpos $1) (RetExp $3) }
SelectionStmt :: {AbsNode}
: 'if' '(' RExpr ')' Stmt 'else' Stmt { SelectionStmtNode (tpos $1) (IfElse $3 $5 $7) }
| 'if' '(' RExpr ')' Stmt { SelectionStmtNode (tpos $1) (IfNoElse $3 $5) }
IterStmt :: {AbsNode}
: 'while' '(' RExpr ')' Stmt { IterStmtNode (tpos $1) (While $3 $5) }
| 'for' '(' Ident '<-' RExpr 'to' RExpr ')' Stmt { IterStmtNode (tpos $1) (For (Ident (prToken $3)) $5 $7 $9) }
{
returnM :: a -> Err a
returnM = return
thenM :: Err a -> (a -> Err b) -> Err b
thenM = (>>=)
happyError :: [Token] -> Err a
happyError ts =
Bad $ "Error => syntax error at " ++ tokenPos ts ++
case ts of
[] -> []
[Err _] -> " due to lexer error"
_ -> " before " ++ unwords (map (id . prToken) (take 4 ts))
------------------------------------------------------------
------------------------ ABS -------------------------------
------------------------------------------------------------
data AbsNode
= RExprNode {pos::Posn, gRExpr::RExpr}
| FunCallNode {pos::Posn, gFunCall::FunCall}
| LExprNode {pos::Posn, gLExpr::LExpr}
| BLExprNode {pos::Posn, gBLExpr::BLExpr}
| ProgramNode {pos::Posn, gProgram::Program}
| DeclNode {pos::Posn, gDecl::Decl}
| TypeSpecNode {pos::Posn, gTypeSpec::TypeSpec}
| BasicTypeNode {pos::Posn, gBasicType::BasicType}
| CompoundTypeNode {pos::Posn, gCompoundType::CompoundType}
| ComplexRExprNode {pos::Posn, gComplexRExpr::ComplexRExpr}
| ParameterNode {pos::Posn, gParameter::Parameter}
| ModalityParamNode {pos::Posn, gModalityParam::ModalityParam}
| ModalityDeclNode {pos::Posn, gModalityDecl::ModalityDecl}
| CompStmtNode {pos::Posn, gCompStmt::CompStmt}
| StmtNode {pos::Posn, gStmt::Stmt}
| TryCatchStmtNode {pos::Posn, gTryCatch::TryCatchStmt}
| Assignment_opNode {pos::Posn, gAssignment_op::Assignment_op}
| JumpStmtNode {pos::Posn, gJumpStmt::JumpStmt}
| ReturnStmtNode {pos::Posn, gReturnStmt::ReturnStmt}
| SelectionStmtNode {pos::Posn, gSelectionStmt::SelectionStmt}
| IterStmtNode {pos::Posn, gIterStmt::IterStmt}
deriving (Eq, Ord, Show)
newtype Ident = Ident String
deriving (Eq, Ord, Show, Read)
data Boolean
= Boolean_True
| Boolean_False
deriving (Eq, Ord, Show, Read)
data Program = Prog [AbsNode]
deriving (Eq, Ord, Show)
data Decl
= DvarBInit AbsNode Ident AbsNode AbsNode
| DvarCInit AbsNode Ident AbsNode AbsNode
| Dfun Ident [AbsNode] AbsNode AbsNode AbsNode
deriving (Eq, Ord, Show)
data RExpr
= OpRelation AbsNode AbsNode String
| OpAritm AbsNode AbsNode String
| OpBoolean AbsNode AbsNode String
| Not AbsNode
| Neg AbsNode
| Ref AbsNode
| FCall AbsNode
| Int Int
| Char Char
| String String
| Float Double
| Bool Boolean
| Lexpr AbsNode
deriving (Eq, Ord, Show)
data FunCall
= Call Ident [AbsNode]
deriving (Eq, Ord, Show)
data LExpr
= Deref AbsNode
| PreIncrDecr AbsNode String
| PostIncrDecr AbsNode String
| BasLExpr AbsNode
deriving (Eq, Ord, Show)
data BLExpr
= ArrayEl AbsNode AbsNode
| Id Ident
deriving (Eq, Ord, Show)
data TypeSpec
= BasTyp AbsNode
| CompType AbsNode
deriving (Eq, Ord, Show)
data BasicType
= BType String
deriving (Eq, Ord, Show, Read)
data CompoundType
= ArrDef AbsNode Int
| Pointer AbsNode
deriving (Eq, Ord, Show)
data ComplexRExpr
= Simple AbsNode
| Array [AbsNode]
deriving (Eq, Ord, Show)
data Parameter
= Param AbsNode Ident AbsNode
deriving (Eq, Ord, Show)
data ModalityParam
= ModalityPEmpty
| ModalityP_val
| ModalityP_var
| ModalityP_valres
deriving (Eq, Ord, Show)
data ModalityDecl
= ModalityD_val
| ModalityD_var
deriving (Eq, Ord, Show)
data CompStmt
= BlockDecl [AbsNode] [AbsNode]
deriving (Eq, Ord, Show)
data Stmt
= Comp AbsNode
| ProcCall AbsNode
| Jmp AbsNode
| Iter AbsNode
| Sel AbsNode
| Assgn AbsNode AbsNode AbsNode
| LExprStmt AbsNode
| ExHandler AbsNode
deriving (Eq, Ord, Show)
data TryCatchStmt
= TryCatch AbsNode Ident AbsNode
deriving (Eq, Ord, Show)
data Assignment_op
= Assign
| AssignOp String
deriving (Eq, Ord, Show, Read)
data JumpStmt
= Break
| Continue
deriving (Eq, Ord, Show, Read)
data ReturnStmt
= RetExpVoid
| RetExp AbsNode
deriving (Eq, Ord, Show)
data SelectionStmt
= IfNoElse AbsNode AbsNode
| IfElse AbsNode AbsNode AbsNode
deriving (Eq, Ord, Show)
data IterStmt
= While AbsNode AbsNode
| DoWhile AbsNode AbsNode
| For Ident AbsNode AbsNode AbsNode
deriving (Eq, Ord, Show)
}