language-c-0.4.7: Analysis and generation of C code

Copyright | (c) [1995..1999] Manuel M. T. Chakravarty (c) 2008 Benedikt Huber
License | BSD-style
Maintainer | benedikt.huber@gmail.com
Stability | experimental
Portability | ghc
Safe Haskell | None
Language | Haskell98

Language.C.Data.Ident

Description

This module provides the notion of identifiers in C, speed up using hashing. Identifiers are associated optionally associated with a `NodeInfo`, i.e. with a unique `Name` and a source location (`Position`). The ordering relation on identifiers is based on the hash and does not follow the lexical order.

Synopsis

- data Ident = Ident String !Int NodeInfo
- data SUERef
  - = AnonymousRef Name
  - | NamedRef Ident
- isAnonymousRef :: SUERef -> Bool
- mkIdent :: Position -> String -> Name -> Ident
- builtinIdent :: String -> Ident
- internalIdent :: String -> Ident
- internalIdentAt :: Position -> String -> Ident
- isInternalIdent :: Ident -> Bool
- identToString :: Ident -> String
- dumpIdent :: Ident -> String

# Documentation

data Ident

C identifiers

Constructors

Ident String !Int NodeInfo |

Instances

Eq Ident |
Data Ident |
Ord Ident |
Show Ident |
Pos Ident |
CNode Ident |

data SUERef

References uniquely determining a struct, union or enum type. Those are either identified by an string identifier, or by a unique name (anonymous types).

Constructors

AnonymousRef Name |
NamedRef Ident |

Instances

Eq SUERef |
Data SUERef |
Ord SUERef |
Show SUERef |

isAnonymousRef :: SUERef -> Bool

Return true if the struct/union/enum reference is anonymous.

mkIdent :: Position -> String -> Name -> Ident

build an identifier from a string.

- only minimal error checking, e.g., the characters of the identifier are not checked for being alphanumerical only; the correct lexis of the identifier should be ensured by the caller, e.g., the scanner.
- for reasons of simplicity the complete lexeme is hashed.

builtinIdent :: String -> Ident

returns a builtin identifier (has builtin position and no unique name)

internalIdent :: String -> Ident

returns an internal identifier (has internal position and no unique name)

internalIdentAt :: Position -> String -> Ident

return an internal identifier with position info

isInternalIdent :: Ident -> Bool

return `True` if the given identifier is internal

identToString :: Ident -> String

string of an identifier

dumpIdent :: Ident -> String

dump the identifier string and its positions for debugging purposes