Transcript DESIGN OF MACRO PREPROCESSOR

DESIGN OF MACRO PREPROCESSOR
Tasks involved in macro
expansion
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Identify macro calls in the program
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Determine the values of formal
parameters
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Macro Name Table (MNT)
Actual Parameter Table (APT)
Parameter Default Table (PDT )
Maintain the value of EV declared
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Expansion Time Variables (EVT)
Tasks involved in macro
expansion
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Organize expansion time control flow
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Determine the value of seq. symbol
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Macro definition Table (MDT)
Sequencing Symbols Table (SST)
Perform expansion of model statement
Design Specification for each
Task
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Identify information to perform the task
Design data structure to record the info
Determine processing to obtain the
info
Determine processing to perform the
task