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https://github.com/irmen/prog8.git
synced 2024-08-20 05:29:02 +00:00
more for loops, words
This commit is contained in:
parent
82f01d84c2
commit
3f4050c647
@ -150,14 +150,14 @@ internal class AstChecker(private val program: Program,
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checkResult.add(ExpressionError("word loop variable can only loop over bytes or words", forLoop.position))
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}
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DataType.FLOAT -> {
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if(iterableDt!= DataType.FLOAT && iterableDt != DataType.ARRAY_F)
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checkResult.add(ExpressionError("float loop variable can only loop over floats", forLoop.position))
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checkResult.add(ExpressionError("for loop only supports integers", forLoop.position))
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}
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else -> checkResult.add(ExpressionError("loop variable must be numeric type", forLoop.position))
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}
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}
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}
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}
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super.visit(forLoop)
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}
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@ -772,8 +772,11 @@ internal class AstChecker(private val program: Program,
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super.visit(range)
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val from = range.from.constValue(program)
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val to = range.to.constValue(program)
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val stepLv = range.step.constValue(program) ?: NumericLiteralValue(DataType.UBYTE, 1, range.position)
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if (stepLv.type !in IntegerDatatypes || stepLv.number.toInt() == 0) {
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val stepLv = range.step.constValue(program)
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if(stepLv==null) {
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err("range step must be a constant integer")
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return
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} else if (stepLv.type !in IntegerDatatypes || stepLv.number.toInt() == 0) {
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err("range step must be an integer != 0")
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return
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}
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@ -952,71 +952,180 @@ internal class AsmGen2(val program: Program,
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}
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private fun translate(stmt: ForLoop) {
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val iterableDt = stmt.iterable.inferType(program)
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val loopLabel = makeLabel("for_loop")
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val endLabel = makeLabel("for_end")
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val iterableDt = stmt.iterable.inferType(program)!!
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when(stmt.iterable) {
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is RangeExpr -> {
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val range = (stmt.iterable as RangeExpr).toConstantIntegerRange()
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if(range==null)
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TODO("non-const range loop")
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if(range.isEmpty())
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throw AssemblyError("empty range")
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when(iterableDt) {
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in ByteDatatypes -> {
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if(stmt.loopRegister!=null) {
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if(range==null) {
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translateForOverNonconstRange(stmt, iterableDt, stmt.iterable as RangeExpr)
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} else {
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if (range.isEmpty())
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throw AssemblyError("empty range")
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translateForOverConstRange(stmt, iterableDt, range)
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}
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}
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is IdentifierReference -> {
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translateForOverIterableVar(stmt, iterableDt, stmt.iterable as IdentifierReference)
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}
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else -> throw AssemblyError("can't iterate over ${stmt.iterable}")
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}
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}
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// loop register over range
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private fun translateForOverNonconstRange(stmt: ForLoop, iterableDt: DataType, range: RangeExpr) {
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TODO("non-const range loop")
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}
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if(stmt.loopRegister!=Register.A)
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throw AssemblyError("can only use A")
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when {
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range.step==1 -> {
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// step = 1
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val counterLabel = makeLabel("for_counter")
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out("""
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private fun translateForOverIterableVar(stmt: ForLoop, iterableDt: DataType, ident: IdentifierReference) {
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val loopLabel = makeLabel("for_loop")
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val endLabel = makeLabel("for_end")
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val iterableName = asmIdentifierName(ident)
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val decl = ident.targetVarDecl(program.namespace)!!
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when(iterableDt) {
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DataType.STR, DataType.STR_S -> {
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if(stmt.loopRegister!=null && stmt.loopRegister!=Register.A)
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throw AssemblyError("can only use A")
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out("""
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lda #<$iterableName
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ldy #>$iterableName
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sta $loopLabel+1
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sty $loopLabel+2
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$loopLabel lda ${65535.toHex()} ; modified
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beq $endLabel""")
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if(stmt.loopVar!=null)
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out(" sta ${asmIdentifierName(stmt.loopVar!!)}")
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translate(stmt.body)
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out("""
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inc $loopLabel+1
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bne $loopLabel
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inc $loopLabel+2
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bne $loopLabel
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$endLabel""")
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}
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DataType.ARRAY_UB, DataType.ARRAY_B -> {
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val length = decl.arraysize!!.size()
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if(stmt.loopRegister!=null && stmt.loopRegister!=Register.A)
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throw AssemblyError("can only use A")
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val counterLabel = makeLabel("for_counter")
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val modifiedLabel = makeLabel("for_modified")
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out("""
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lda #<$iterableName
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ldy #>$iterableName
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sta $modifiedLabel+1
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sty $modifiedLabel+2
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ldy #0
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$loopLabel sty $counterLabel
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cpy #$length
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beq $endLabel
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$modifiedLabel lda ${65535.toHex()},y ; modified""")
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if(stmt.loopVar!=null)
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out(" sta ${asmIdentifierName(stmt.loopVar!!)}")
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translate(stmt.body)
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out("""
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ldy $counterLabel
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iny
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jmp $loopLabel
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$counterLabel .byte 0
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$endLabel""")
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}
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DataType.ARRAY_W, DataType.ARRAY_UW -> {
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val length = decl.arraysize!!.size()!! * 2
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if(stmt.loopRegister!=null)
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throw AssemblyError("can't use register to loop over words")
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val counterLabel = makeLabel("for_counter")
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val modifiedLabel = makeLabel("for_modified")
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val modifiedLabel2 = makeLabel("for_modified2")
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val loopvarName = asmIdentifierName(stmt.loopVar!!)
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out("""
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lda #<$iterableName
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ldy #>$iterableName
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sta $modifiedLabel+1
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sty $modifiedLabel+2
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lda #<$iterableName+1
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ldy #>$iterableName+1
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sta $modifiedLabel2+1
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sty $modifiedLabel2+2
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ldy #0
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$loopLabel sty $counterLabel
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cpy #$length
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beq $endLabel
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$modifiedLabel lda ${65535.toHex()},y ; modified
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sta $loopvarName
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$modifiedLabel2 lda ${65535.toHex()},y ; modified
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sta $loopvarName+1""")
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translate(stmt.body)
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out("""
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ldy $counterLabel
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iny
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iny
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jmp $loopLabel
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$counterLabel .byte 0
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$endLabel""")
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}
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DataType.ARRAY_F -> {
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throw AssemblyError("for loop with floating point variables is not supported")
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}
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else -> throw AssemblyError("can't iterate over $iterableDt")
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}
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}
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private fun translateForOverConstRange(stmt: ForLoop, iterableDt: DataType, range: IntProgression) {
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val loopLabel = makeLabel("for_loop")
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val endLabel = makeLabel("for_end")
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when(iterableDt) {
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in ByteDatatypes -> {
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if(stmt.loopRegister!=null) {
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// loop register over range
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if(stmt.loopRegister!=Register.A)
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throw AssemblyError("can only use A")
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when {
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range.step==1 -> {
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// step = 1
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val counterLabel = makeLabel("for_counter")
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out("""
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lda #${range.first}
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sta $loopLabel+1
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lda #${range.last-range.first+1 and 255}
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sta $counterLabel
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$loopLabel lda #0 ; modified""")
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translate(stmt.body)
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out("""
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translate(stmt.body)
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out("""
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dec $counterLabel
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beq $endLabel
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inc $loopLabel+1
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jmp $loopLabel
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$counterLabel .byte 0
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$endLabel""")
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}
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range.step==-1 -> {
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// step = -1
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val counterLabel = makeLabel("for_counter")
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out("""
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}
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range.step==-1 -> {
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// step = -1
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val counterLabel = makeLabel("for_counter")
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out("""
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lda #${range.first}
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sta $loopLabel+1
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lda #${range.first-range.last+1 and 255}
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sta $counterLabel
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$loopLabel lda #0 ; modified """)
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translate(stmt.body)
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out("""
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translate(stmt.body)
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out("""
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dec $counterLabel
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beq $endLabel
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dec $loopLabel+1
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jmp $loopLabel
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$counterLabel .byte 0
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$endLabel""")
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}
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range.step>0 -> {
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// step >= 2
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val counterLabel = makeLabel("for_counter")
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out("""
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}
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range.step >= 2 -> {
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// step >= 2
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val counterLabel = makeLabel("for_counter")
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out("""
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lda #${(range.last-range.first) / range.step + 1}
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sta $counterLabel
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lda #${range.first}
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$loopLabel pha""")
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translate(stmt.body)
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out("""
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translate(stmt.body)
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out("""
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pla
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dec $counterLabel
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beq $endLabel
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@ -1025,17 +1134,17 @@ $loopLabel pha""")
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jmp $loopLabel
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$counterLabel .byte 0
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$endLabel""")
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}
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else -> {
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// step <= -2
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val counterLabel = makeLabel("for_counter")
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out("""
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}
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else -> {
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// step <= -2
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val counterLabel = makeLabel("for_counter")
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out("""
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lda #${(range.first-range.last) / range.step.absoluteValue + 1}
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sta $counterLabel
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lda #${range.first}
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$loopLabel pha""")
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translate(stmt.body)
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out("""
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translate(stmt.body)
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out("""
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pla
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dec $counterLabel
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beq $endLabel
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@ -1044,61 +1153,59 @@ $loopLabel pha""")
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jmp $loopLabel
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$counterLabel .byte 0
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$endLabel""")
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}
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}
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}
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}
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} else {
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} else {
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// loop over byte range via loopvar
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val varname = asmIdentifierName(stmt.loopVar!!)
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when {
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range.step==1 -> {
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// step = 1
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val counterLabel = makeLabel("for_counter")
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out("""
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// loop over byte range via loopvar
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val varname = asmIdentifierName(stmt.loopVar!!)
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val counterLabel = makeLabel("for_counter")
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when {
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range.step==1 -> {
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// step = 1
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out("""
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lda #${range.first}
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sta $varname
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lda #${range.last-range.first+1 and 255}
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sta $counterLabel
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$loopLabel""")
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translate(stmt.body)
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out("""
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translate(stmt.body)
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out("""
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dec $counterLabel
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beq $endLabel
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inc $varname
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jmp $loopLabel
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$counterLabel .byte 0
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$endLabel""")
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}
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range.step==-1 -> {
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// step = -1
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val counterLabel = makeLabel("for_counter")
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out("""
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}
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range.step==-1 -> {
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// step = -1
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out("""
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lda #${range.first}
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sta $varname
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lda #${range.first-range.last+1 and 255}
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sta $counterLabel
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$loopLabel""")
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translate(stmt.body)
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out("""
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translate(stmt.body)
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out("""
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dec $counterLabel
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beq $endLabel
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dec $varname
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jmp $loopLabel
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$counterLabel .byte 0
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$endLabel""")
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}
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range.step>0 -> {
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// step >= 2
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val counterLabel = makeLabel("for_counter")
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out("""
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}
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range.step >= 2 -> {
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// step >= 2
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out("""
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lda #${(range.last-range.first) / range.step + 1}
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sta $counterLabel
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lda #${range.first}
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sta $varname
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$loopLabel""")
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translate(stmt.body)
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out("""
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translate(stmt.body)
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out("""
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dec $counterLabel
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beq $endLabel
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lda $varname
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@ -1108,18 +1215,17 @@ $loopLabel""")
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jmp $loopLabel
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$counterLabel .byte 0
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$endLabel""")
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}
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else -> {
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// step <= -2
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val counterLabel = makeLabel("for_counter")
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out("""
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}
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else -> {
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// step <= -2
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out("""
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lda #${(range.first-range.last) / range.step.absoluteValue + 1}
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sta $counterLabel
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lda #${range.first}
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sta $varname
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$loopLabel""")
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translate(stmt.body)
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out("""
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translate(stmt.body)
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out("""
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dec $counterLabel
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beq $endLabel
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lda $varname
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@ -1129,89 +1235,111 @@ $loopLabel""")
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jmp $loopLabel
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$counterLabel .byte 0
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$endLabel""")
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}
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}
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}
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}
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in WordDatatypes -> {
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TODO("forloop over word range $stmt") // TODO
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}
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else -> throw AssemblyError("range expression can only be byte or word")
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}
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}
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is IdentifierReference -> {
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val ident = (stmt.iterable as IdentifierReference)
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val iterableName = asmIdentifierName(ident)
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val decl = ident.targetVarDecl(program.namespace)!!
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when(iterableDt) {
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DataType.STR, DataType.STR_S -> {
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if(stmt.loopRegister!=null && stmt.loopRegister!=Register.A)
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throw AssemblyError("can only use A")
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in WordDatatypes -> {
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// loop over word range via loopvar
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val counterLabel = makeLabel("for_counter")
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val varname = asmIdentifierName(stmt.loopVar!!)
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when {
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range.step == 1 -> {
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// step = 1
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out("""
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lda #<$iterableName
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ldy #>$iterableName
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sta $loopLabel+1
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sty $loopLabel+2
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$loopLabel lda ${65535.toHex()} ; modified
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beq $endLabel""")
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if(stmt.loopVar!=null)
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out(" sta ${asmIdentifierName(stmt.loopVar!!)}")
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lda #<${range.first}
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ldy #>${range.first}
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sta $varname
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sty $varname+1
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lda #${range.last - range.first + 1 and 255}
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sta $counterLabel
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$loopLabel""")
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translate(stmt.body)
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out("""
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inc $loopLabel+1
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bne $loopLabel
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inc $loopLabel+2
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bne $loopLabel
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$endLabel""")
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}
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DataType.ARRAY_UB, DataType.ARRAY_B -> {
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val length = decl.arraysize!!.size()
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if(stmt.loopRegister!=null && stmt.loopRegister!=Register.A)
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throw AssemblyError("can only use A")
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val counterLabel = makeLabel("for_counter")
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val modifiedLabel = makeLabel("for_modified")
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out("""
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lda #<$iterableName
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ldy #>$iterableName
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sta $modifiedLabel+1
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sty $modifiedLabel+2
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ldy #0
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$loopLabel sty $counterLabel
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cpy #$length
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dec $counterLabel
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beq $endLabel
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$modifiedLabel lda ${65535.toHex()},y ; modified""")
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if(stmt.loopVar!=null)
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out(" sta ${asmIdentifierName(stmt.loopVar!!)}")
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translate(stmt.body)
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out("""
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ldy $counterLabel
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iny
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inc $varname
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bne $loopLabel
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inc $varname+1
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jmp $loopLabel
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$counterLabel .byte 0
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$counterLabel .byte 0
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$endLabel""")
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}
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DataType.ARRAY_W, DataType.ARRAY_UW -> {
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val length = decl.arraysize!!.size()
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println("forloop over word array len $length $stmt") // TODO
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if(stmt.loopRegister!=null) {
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TODO("loop register over wordarray of len $length")
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} else {
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TODO("loop variable over wordarray of len $length")
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}
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range.step == -1 -> {
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// step = 1
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out("""
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lda #<${range.first}
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ldy #>${range.first}
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sta $varname
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sty $varname+1
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lda #${range.first - range.last + 1 and 255}
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sta $counterLabel
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$loopLabel""")
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translate(stmt.body)
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out("""
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dec $counterLabel
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beq $endLabel
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lda $varname
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bne +
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dec $varname+1
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+ dec $varname
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jmp $loopLabel
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$counterLabel .byte 0
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$endLabel""")
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}
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DataType.ARRAY_F -> {
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val length = decl.arraysize!!.size()
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println("forloop over float array len $length $stmt") // TODO
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if(stmt.loopRegister!=null) {
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throw AssemblyError("can't use register to loop over floats")
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} else {
|
||||
TODO("loop variable over floatarray of len $length")
|
||||
}
|
||||
range.step >= 2 -> {
|
||||
// step >= 2
|
||||
out("""
|
||||
lda #<${range.first}
|
||||
ldy #>${range.first}
|
||||
sta $varname
|
||||
sty $varname+1
|
||||
lda #${(range.last-range.first) / range.step + 1}
|
||||
sta $counterLabel
|
||||
$loopLabel""")
|
||||
translate(stmt.body)
|
||||
out("""
|
||||
dec $counterLabel
|
||||
beq $endLabel
|
||||
clc
|
||||
lda $varname
|
||||
adc #<${range.step}
|
||||
sta $varname
|
||||
lda $varname+1
|
||||
adc #>${range.step}
|
||||
sta $varname+1
|
||||
jmp $loopLabel
|
||||
$counterLabel .byte 0
|
||||
$endLabel""")
|
||||
}
|
||||
else -> {
|
||||
// step <= -2
|
||||
out("""
|
||||
lda #<${range.first}
|
||||
ldy #>${range.first}
|
||||
sta $varname
|
||||
sty $varname+1
|
||||
lda #${(range.first-range.last) / range.step.absoluteValue + 1}
|
||||
sta $counterLabel
|
||||
$loopLabel""")
|
||||
translate(stmt.body)
|
||||
out("""
|
||||
dec $counterLabel
|
||||
beq $endLabel
|
||||
sec
|
||||
lda $varname
|
||||
sbc #<${range.step.absoluteValue}
|
||||
sta $varname
|
||||
lda $varname+1
|
||||
sbc #>${range.step.absoluteValue}
|
||||
sta $varname+1
|
||||
jmp $loopLabel
|
||||
$counterLabel .byte 0
|
||||
$endLabel""")
|
||||
}
|
||||
else -> throw AssemblyError("can't iterate over $iterableDt")
|
||||
}
|
||||
}
|
||||
else -> throw AssemblyError("can't iterate over ${stmt.iterable}")
|
||||
else -> throw AssemblyError("range expression can only be byte or word")
|
||||
}
|
||||
}
|
||||
|
||||
|
@ -8,6 +8,9 @@ main {
|
||||
byte bvar
|
||||
ubyte var2
|
||||
|
||||
ubyte[] barr = [22,33,44,55,66]
|
||||
word[] warr = [-111,222,-333,444]
|
||||
|
||||
for A in "hello" {
|
||||
c64scr.print_ub(A)
|
||||
c64.CHROUT(',')
|
||||
@ -43,6 +46,12 @@ main {
|
||||
c64.CHROUT(',')
|
||||
}
|
||||
c64.CHROUT('\n')
|
||||
|
||||
for A in barr {
|
||||
c64scr.print_ub(A)
|
||||
c64.CHROUT(',')
|
||||
}
|
||||
c64.CHROUT('\n')
|
||||
c64.CHROUT('\n')
|
||||
|
||||
for ubyte cc in "hello" {
|
||||
@ -80,13 +89,49 @@ main {
|
||||
c64.CHROUT(',')
|
||||
}
|
||||
c64.CHROUT('\n')
|
||||
|
||||
for ubyte cc7 in barr {
|
||||
c64scr.print_ub(cc7)
|
||||
c64.CHROUT(',')
|
||||
}
|
||||
c64.CHROUT('\n')
|
||||
c64.CHROUT('\n')
|
||||
|
||||
for uword ww1 in [1111, 2222, 3333] {
|
||||
c64scr.print_uw(ww1)
|
||||
c64.CHROUT(',')
|
||||
}
|
||||
c64.CHROUT('\n')
|
||||
|
||||
; for float fl in [1.1, 2.2, 5.5, 99.99] {
|
||||
; c64flt.print_f(fl)
|
||||
; c64.CHROUT(',')
|
||||
; }
|
||||
; c64.CHROUT('\n')
|
||||
for word ww2 in warr {
|
||||
c64scr.print_w(ww2)
|
||||
c64.CHROUT(',')
|
||||
}
|
||||
c64.CHROUT('\n')
|
||||
|
||||
for uword ww3 in 1111 to 1122 {
|
||||
c64scr.print_uw(ww3)
|
||||
c64.CHROUT(',')
|
||||
}
|
||||
c64.CHROUT('\n')
|
||||
|
||||
for uword ww3b in 2000 to 1990 step -1 {
|
||||
c64scr.print_uw(ww3b)
|
||||
c64.CHROUT(',')
|
||||
}
|
||||
c64.CHROUT('\n')
|
||||
|
||||
for uword ww3c in 1111 to 50000 step 3333 {
|
||||
c64scr.print_uw(ww3c)
|
||||
c64.CHROUT(',')
|
||||
}
|
||||
c64.CHROUT('\n')
|
||||
|
||||
for word ww4 in 999 to -999 step -500 {
|
||||
c64scr.print_w(ww4)
|
||||
c64.CHROUT(',')
|
||||
}
|
||||
c64.CHROUT('\n')
|
||||
c64.CHROUT('\n')
|
||||
}
|
||||
}
|
||||
|
Loading…
Reference in New Issue
Block a user