Symbol Table Entries

. each entry for a declaration of a name

. format need not be uniform because information depends upon the usage of the name

. each entry is a record consisting of consecutive words

. to keep records uniform some entries may be outside the symbol table

. information is entered into symbol table at various times

- keywords are entered initially

- identifier lexemes are entered by lexical analyzer

. symbol table entry may be set up when role of name becomes clear

. attribute values are filled in as information is available

For each declaration of a name, there is an entry in the symbol table. Different entries need to store different information because of the different contexts in which a name can occur. An entry corresponding to a particular name can be inserted into the symbol table at different stages depending on when the role of the name becomes clear. The various attributes that an entry in the symbol table can have are lexeme, type of name, size of storage and in case of functions - the parameter list etc.