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Printer

  

Print

  

Print expression

  

PrintBinary

  

Print a binary operation

  

PrintDelimitedList

  

Print list elements delimited by specified expression

  

PrintParentheses

  

Print expression contained in parentheses if needed

  

PrintStatementBlock

  

Print a block of statements

  

PrintUnary

  

Print a unary operation

 

Calling Sequence

Parameters

Description

Calling Sequence

Printer:-Print(expr)

Printer:-PrintBinary(opname, expr1, expr2)

Printer:-PrintDelimitedList(l, delimiter)

Printer:-PrintParentheses(expr, icname)

Printer:-PrintStatementBlock(expr)

Printer:-PrintUnary(opname, expr)

Parameters

Printer

-

Printer module

expr, expr1, expr2

-

Intermediate Code expressions

delimiter

-

string or Intermediate Code expression

opname

-

operator name where opname is one of Addition, Exponentiation, Division, Multiplication, and Subtraction

icname

-

member of CodeGeneration:-Names subpackage

Description

• 

The process of translating the intermediate form into a string equivalent compatible with a specific programming language is known as printing.

• 

The Print command is the basic tool for printing intermediate code. Given an intermediate code expression expr, Print calls the Print handler for op0,expr and passes the operands of expr as arguments.  In this way it traverses the intermediate code tree.

• 

The PrintUnary, PrintBinary commands print prefix unary and infix binary operations, respectively.  The name opname must have been previously defined with AddOperator, and must be one of the operators listed in AddOperator.

• 

The PrintDelimitedList command prints the elements of the list l delimited with the expression delimiter.  It is equivalent to Print(op(ListTools:-Join(l, delimiter))).

• 

The PrintParentheses command prints expr, contained within parentheses if and only if the precedence of icname is greater than that the precedence of op(0, expr).  It is useful for correct printing of infix binary operators.

• 

The PrintStatementBlock command prints expr with indentation, and contained within a program block in the language.

• 

For more information about Printer functions, see Printer.

See Also

AddOperator

Intermediate Code Structure

Printer

 


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