apg_py.api.semantic Namespace Reference

Functions
def	semantic (api)
	Translate the AST, generating a list of rule objects, and UDT objects, if any. More...
def	remove_redundant_opcodes (rules)
	Opcodes ALT and CAT with only one child are redundant and can be removed. More...
def	check_for_removal (i, opcodes)
	Scan all opcodes and check for ALT, CAT and REP that can be removed. More...
def	adjust_children (j, opcodes)
	When an opcode is removed the indecies of the ALT and CAT children must be corrected for the removed opcodes. More...

Function Documentation

adjust_children()

def apg_py.api.semantic.adjust_children	(		j,
			opcodes
	)

When an opcode is removed the indecies of the ALT and CAT children must be corrected for the removed opcodes.

Parameters

j	The opcode index of reference.
opcodes	The list of opcodes for a particular rule.

Definition at line 64 of file semantic.py.

check_for_removal()

def apg_py.api.semantic.check_for_removal	(		i,
			opcodes
	)

Scan all opcodes and check for ALT, CAT and REP that can be removed.

Parameters

i	The opcode index of reference.
opcodes	The list of opcodes for a given rule.

Returns

Returns the number of remaining opcodes after removal.

Definition at line 46 of file semantic.py.

remove_redundant_opcodes()

def apg_py.api.semantic.remove_redundant_opcodes

(

rules

)

Opcodes ALT and CAT with only one child are redundant and can be removed.

Opcodes REP with min = max = 1 are redundant and can be removed.

Parameters

rules

The grammar object rules.

Definition at line 32 of file semantic.py.

semantic()

def apg_py.api.semantic.semantic

(

api

)

Translate the AST, generating a list of rule objects, and UDT objects, if any.

Parameters

api	The api object for the grammar syntax (api.py)

Definition at line 10 of file semantic.py.