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Is a symbol table a dictionary?

Symbol tables and dictionaries perform essentially the same function; they contain entries that are database objects that can be looked up using a text string key. You can add entries to these container objects, and you can use an iterator to step through the entries and query their contents.

What is the symbol table used for?

The symbol table is used to store essential information about every symbol contained within the program. Virtually every phase of the compiler will use the symbol table: The initialization phase will place keywords, operators, and standard identifiers in it.

What is in a symbol table?

The symbol table is used to store essential information about every symbol contained within the program. Virtually every phase of the compiler will use the symbol table: The initialization phase will place keywords, operators, and standard identifiers in it.

What does a symbol table hash do?

A hash table is an array with an index range: 0 to table size 1. These entries are pointers pointing to the names of the symbol table. To search for a name we use a hash function that will result in an integer between 0 to table size 1. Insertion and lookup can be made very fast O(1).

How do I access a symbol table?

A compiler maintains two types of symbol tables: a global symbol table which can be accessed by all the procedures and scope symbol tables that are created for each scope in the program. To determine the scope of a name, symbol tables are arranged in hierarchical structure as shown in the example below: . . .

What is the difference between symbol table and Hashtable?

A hash-table is one way of implementing symbol table, and although commonly used its not a necessity. Any associative data-structure can be used to implement a symbol table.

What is the difference between symbol table and literal table?

In pass 1, whenever a symbol is defined and for entry is made in symbol table. In pass2, symbol table is used for generating address of a symbol. Literal table is used for keeping track of literals that are encountered in the programs. We directly specify the value, literal is used to give a location for the value.

What is the difference between symbol table and map?

map file is a symbol table used by the kernel. A symbol table is a look-up between symbol names and their addresses in memory. A symbol name may be the name of a variable or the name of a function.

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