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Fixing LESS, GREATER and IMPLIES operator, outdated typing.io imports and pastification of negative numbers #207

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Fixing LESS, GREATER and IMPLIES operator, outdated typing.io imports and pastification of negative numbers #207

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e03b2ea
fixed typing import statements
Jun 24, 2026
e5a14e0
Changed LESS and GREATER operator to return -sys.float_info.min when …
Jun 24, 2026
747698a
Changed the IMPLIES operator to use sys.float_info.min for the left a…
Jun 24, 2026
bdc27ce
Changed IMPLIES operator to use sys.float_info.max for the left argum…
Jun 24, 2026
59f296c
Set version of antlr4 to 4.9 to get the typing fixes. Deleted StlLexe…
Jun 25, 2026
4f90126
Updated documentation of modified operators.
Jun 29, 2026
9c3a0cd
Fixed pastification result when specification/rule contains a negativ…
Jul 2, 2026
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8 changes: 6 additions & 2 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -209,9 +209,11 @@ rho(phi / psi,w,t) = rho(phi,w,t) / rho(psi,w,t)

% Numeric predicates
rho(phi <= psi,w,t) = rho(psi,w,t) - rho(phi,w,t)
rho(phi < psi,w,t) = rho(psi,w,t) - rho(phi,w,t)
rho(phi < psi,w,t) = rho(psi,w,t) - rho(phi,w,t) if rho(psi,w,t) - rho(phi,w,t) != 0
-sys.float_info.min otherwise
rho(phi >= psi,w,t) = rho(phi,w,t) - rho(psi,w,t)
rho(phi > psi,w,t) = rho(phi,w,t) - rho(psi,w,t)
rho(phi > psi,w,t) = rho(phi,w,t) - rho(psi,w,t) if rho(psi,w,t) - rho(phi,w,t) != 0
-sys.float_info.min otherwise
rho(phi == psi,w,t) = -|rho(phi,w,t) - rho(psi,w,t)|
rho(phi !== psi,w,t) = |rho(phi,w,t) - rho(psi,w,t)|

Expand All @@ -220,6 +222,8 @@ rho(not(phi),w,t) = -rho(phi,w,t)
rho(phi or psi,w,t) = max(rho(phi,w,t),rho(psi,w,t))
rho(phi and psi,w,t) = min(rho(phi,w,t),rho(psi,w,t))
rho(phi -> psi,w,t) = max(-rho(phi,w,t),rho(psi,w,t))
rho(phi -> psi,w,t) = rho(psi,w,t) if rho(phi,w,t) == 0
= max(-rho(phi,w,t),rho(psi,w,t)) otherwise
rho(phi <-> psi,w,t) = -|rho(phi,w,t) - rho(psi,w,t)|
rho(phi xor psi,w,t) = |rho(phi,w,t) - rho(psi,w,t)|

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8 changes: 4 additions & 4 deletions rtamt/antlr/grammar/tl/LtlLexer.g4
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Expand Up @@ -223,7 +223,7 @@ FALSE
: ('false' | 'FALSE');

IntegerLiteral
: DecimalNumeral
: SignedInteger
| HexNumeral
| BinaryNumeral ;

Expand Down Expand Up @@ -288,9 +288,9 @@ RealLiteral
: DecimalRealLiteral ;

fragment DecimalRealLiteral
: Digits '.' Digits? ExponentPart?
| '.' Digits ExponentPart?
| Digits ExponentPart
: Sign? Digits '.' Digits? ExponentPart?
| Sign? '.' Digits ExponentPart?
| Sign? Digits ExponentPart
;

fragment ExponentPart
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1,014 changes: 510 additions & 504 deletions rtamt/antlr/parser/ltl/LtlLexer.py
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6,310 changes: 3,155 additions & 3,155 deletions rtamt/antlr/parser/ltl/LtlParser.py
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