Quantification of the development evolution of the VDM grammar of VooDooMFront.

Coverage Metrics

Version	KP	Pr	S	RSa	RSm		RC
0.0.1	1005	815	2278	2	17		52%
0.0.2	946	2753	3396	2	17		54%
0.0.3	900	2753	3518	2	17		55%
1.0	900	2753	3518	2	17		55%

where

KP	Kernel Productions	Number of non-reject productions in the normalized SDF grammar
Pr	Priorities	Number of priorities in the normalized SDF grammar
S	States	Number of states in the parse table
RSa	Rule Size average	Average size of the LHS of productions
RSm	Rule Size maximum	Maximum size of the LHS of productions
RC	Rule Coverage	Percentage of kernel productions used in the test suite

Size and Complexity Metrics

The size metrics were calculated with the SdfMetz tool. For more information see the SdfMetz wiki page.

Version	TERM	VAR	MCC	AVS	HAL
0.0.1	138	161	234	4.404	228.9
0.0.2	138	118	232	6.441	241.1
0.0.3	138	71	232	10.437	256.1
1.0	138	71	232	10.437	256.1

where:

VAR	number of unique non-terminals
TERM	number of unique terminals
PROD	number of production rules
AVS	average Right Hand Side size
HAL	Halstead Effort (measured in thousands)

Structural Metrics

Version	TIMP	LEV	CLEV	NSLEV	DEP
0.0.1	0.9	53	32.9	4	69
0.0.2	1.3	49	41.5	4	39
0.0.3	2.8	35	49.3	3	27
1.0	2.8	35	49.3	3	27

where:

TIMP	Tree impurity
LEV	Count of levels
CLEV	Normalized count of levels
NSLEV	Number of non-singleton levels
DEP	Size of the largest level

Ambiguity-related Metrics

Version	FRST	ASSOC	REJP	UPPRI	TNUPEG	TNPC	TNG
0.0.1	4	0	63	0	0	0	0
0.0.2	4	35	99	72	72	2	18
0.0.3	4	35	99	72	72	2	18
1.0	4	35	99	72	72	2	18

where:

FRST	Number of follow restrictions
ASSOC	Number of associativity attributes in context-free productions
REJP	Number of reject productions
UPPRI	Number of unique productions in priorities
TNUPEG	Total number of unique productions in each group
TNPC	Total number of priority chains
TNG	Total number of priority groups