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add string.endswith() to efficiently test for a suffix without copying

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add string.startswith() to efficiently test for string prefix without copying
This commit is contained in:
Irmen de Jong
2022-07-21 00:38:30 +02:00
parent 473efbe67a
commit f2d27403c5
7 changed files with 60 additions and 4 deletions
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5
codeGenVirtual/src/prog8/codegen/virtual/AssignmentGen.kt
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@@ -165,6 +165,11 @@ internal class AssignmentGen(private val codeGen: CodeGen, private val expressio
throw AssemblyError("non-array var indexing requires bytes index")
val idxReg = codeGen.vmRegisters.nextFree()
code += expressionEval.translateExpression(array.index, idxReg, -1)
if(zero) {
// there's no STOREZIX instruction
resultRegister = codeGen.vmRegisters.nextFree()
code += VmCodeInstruction(Opcode.LOAD, vmDt, reg1=resultRegister, value=0)
}
code += VmCodeInstruction(Opcode.STOREIX, vmDt, reg1=resultRegister, reg2=idxReg, value = variableAddr)
return code
}

4
codeGenVirtual/src/prog8/codegen/virtual/VariableAllocator.kt
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@@ -60,8 +60,8 @@ class VariableAllocator(private val st: SymbolTable, private val program: PtProg
DataType.FLOAT -> (variable.initialNumericValue ?: 0.0).toString()
in NumericDatatypes -> (variable.initialNumericValue ?: 0).toHex()
DataType.STR -> {
val encoded = program.encoding.encodeString(variable.initialStringValue!!.first, variable.initialStringValue!!.second)
encoded.joinToString(",") { it.toInt().toHex() } + ",0"
val encoded = program.encoding.encodeString(variable.initialStringValue!!.first, variable.initialStringValue!!.second) + listOf(0u)
encoded.joinToString(",") { it.toInt().toHex() }
}
DataType.ARRAY_F -> {
if(variable.initialArrayValue!=null) {