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package com.rox.cpu.mos6502.assembler; |
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/** |
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* A parsed instruction operand. |
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* <p> |
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* {@code mode} is left {@code null} for two syntactically ambiguous cases, resolved later by |
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* {@code InstructionResolver} against what the mnemonic actually supports: |
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* <ul> |
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* <li>no operand token at all ({@link #EMPTY}) - could be IMPLIED or ACCUMULATOR</li> |
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* <li>a bare label reference - could be RELATIVE (branches) or ABSOLUTE (e.g. JMP/JSR)</li> |
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* </ul> |
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*/ |
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record Operand(AddressingMode mode, int value, String label) { |
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static final Operand EMPTY = new Operand(null, 0, null); |
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static Operand accumulator() { |
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1. accumulator : replaced return value with null for com/rox/cpu/mos6502/assembler/Operand::accumulator → KILLED
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return new Operand(AddressingMode.ACCUMULATOR, 0, null); |
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} |
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static Operand of(final AddressingMode mode, final int value) { |
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1. of : replaced return value with null for com/rox/cpu/mos6502/assembler/Operand::of → KILLED
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return new Operand(mode, value, null); |
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} |
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static Operand labelRef(final String label) { |
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1. labelRef : replaced return value with null for com/rox/cpu/mos6502/assembler/Operand::labelRef → KILLED
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return new Operand(null, 0, label); |
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} |
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boolean isEmpty() { |
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3
1. isEmpty : negated conditional → KILLED
2. isEmpty : replaced boolean return with true for com/rox/cpu/mos6502/assembler/Operand::isEmpty → KILLED
3. isEmpty : negated conditional → KILLED
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return mode == null && label == null; |
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} |
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boolean isLabelReference() { |
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2
1. isLabelReference : negated conditional → KILLED
2. isLabelReference : replaced boolean return with true for com/rox/cpu/mos6502/assembler/Operand::isLabelReference → KILLED
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return label != null; |
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} |
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} |
| | Mutations |
| 17 |
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1.1
Location : accumulator
Killed by : com.rox.cpu.mos6502.assembler.OperandParserTest.[engine:junit-jupiter]/[class:com.rox.cpu.mos6502.assembler.OperandParserTest]/[nested-class:Accumulator]/[test-template:bareARegisterTokenIsAccumulator(java.lang.String)]/[test-template-invocation:#1] replaced return value with null for com/rox/cpu/mos6502/assembler/Operand::accumulator → KILLED
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1.1
Location : of
Killed by : com.rox.cpu.mos6502.assembler.OperandParserTest.[engine:junit-jupiter]/[class:com.rox.cpu.mos6502.assembler.OperandParserTest]/[nested-class:Immediate]/[test-template:hashPrefixedLiteralsAreImmediate(java.lang.String, int)]/[test-template-invocation:#2] replaced return value with null for com/rox/cpu/mos6502/assembler/Operand::of → KILLED
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1.1
Location : labelRef
Killed by : com.rox.cpu.mos6502.assembler.InstructionResolverTest.[engine:junit-jupiter]/[class:com.rox.cpu.mos6502.assembler.InstructionResolverTest]/[method:labelOperandResolvesToRelativeForBranches()] replaced return value with null for com/rox/cpu/mos6502/assembler/Operand::labelRef → KILLED
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1.1
Location : isEmpty
Killed by : com.rox.cpu.mos6502.assembler.OperandParserTest.[engine:junit-jupiter]/[class:com.rox.cpu.mos6502.assembler.OperandParserTest]/[nested-class:Empty]/[method:emptyOperandTextIsTheEmptySentinel()] negated conditional → KILLED
2.2
Location : isEmpty
Killed by : com.rox.cpu.mos6502.assembler.InstructionResolverTest.[engine:junit-jupiter]/[class:com.rox.cpu.mos6502.assembler.InstructionResolverTest]/[method:labelOperandResolvesToRelativeForBranches()] replaced boolean return with true for com/rox/cpu/mos6502/assembler/Operand::isEmpty → KILLED
3.3
Location : isEmpty
Killed by : com.rox.cpu.mos6502.assembler.OperandParserTest.[engine:junit-jupiter]/[class:com.rox.cpu.mos6502.assembler.OperandParserTest]/[nested-class:Empty]/[method:emptyOperandTextIsTheEmptySentinel()] negated conditional → KILLED
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1.1
Location : isLabelReference
Killed by : com.rox.cpu.mos6502.assembler.InstructionResolverTest.[engine:junit-jupiter]/[class:com.rox.cpu.mos6502.assembler.InstructionResolverTest]/[method:labelOperandResolvesToRelativeForBranches()] negated conditional → KILLED
2.2
Location : isLabelReference
Killed by : com.rox.cpu.mos6502.assembler.InstructionResolverTest.[engine:junit-jupiter]/[class:com.rox.cpu.mos6502.assembler.InstructionResolverTest]/[method:directModeResolvesToTheMatchingOpcode()] replaced boolean return with true for com/rox/cpu/mos6502/assembler/Operand::isLabelReference → KILLED
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