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repeat loop count now always rounded to integer

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This commit is contained in:
Irmen de Jong 2023-07-06 23:57:44 +02:00
parent 70c9ab9074
commit ffb2027a19
3 changed files with 18 additions and 3 deletions
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12
codeOptimizers/src/prog8/optimizer/ConstantFoldingOptimizer.kt
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@ -6,12 +6,14 @@ import prog8.ast.base.FatalAstException
import prog8.ast.expressions.*
import prog8.ast.maySwapOperandOrder
import prog8.ast.statements.ForLoop
import prog8.ast.statements.RepeatLoop
import prog8.ast.statements.VarDecl
import prog8.ast.statements.VarDeclType
import prog8.ast.walk.AstWalker
import prog8.ast.walk.IAstModification
import prog8.code.core.AssociativeOperators
import prog8.code.core.DataType
import kotlin.math.floor
class ConstantFoldingOptimizer(private val program: Program) : AstWalker() {
@ -363,6 +365,16 @@ class ConstantFoldingOptimizer(private val program: Program) : AstWalker() {
return noModifications
}
override fun after(repeatLoop: RepeatLoop, parent: Node): Iterable<IAstModification> {
val count = (repeatLoop.iterations as? NumericLiteral)?.number
if(count!=null && floor(count)!=count) {
val integer = NumericLiteral.optimalInteger(count.toInt(), repeatLoop.position)
repeatLoop.iterations = integer
integer.linkParents(repeatLoop)
}
return noModifications
}
private class ShuffleOperands(val expr: BinaryExpression,
val exprOperator: String?,
val subExpr: BinaryExpression,

7
compiler/src/prog8/compiler/astprocessing/AstChecker.kt
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@ -12,6 +12,7 @@ import prog8.compiler.builtinFunctionReturnType
import java.io.CharConversionException
import java.io.File
import kotlin.io.path.Path
import kotlin.math.floor
/**
* Semantic analysis.
@ -468,8 +469,10 @@ internal class AstChecker(private val program: Program,
override fun visit(repeatLoop: RepeatLoop) {
val iterations = repeatLoop.iterations?.constValue(program)
if(iterations != null && iterations.number.toInt() > 65535)
errors.err("repeat cannot go over 65535 iterations", iterations.position)
if (iterations != null) {
require(floor(iterations.number)==iterations.number)
if (iterations.number.toInt() > 65535) errors.err("repeat cannot go over 65535 iterations", iterations.position)
}
val ident = repeatLoop.iterations as? IdentifierReference
if(ident!=null) {

2
docs/source/todo.rst
View File

@ -1,7 +1,7 @@
TODO
====
- Fix expericodegen errors (examples/cx16/diskspeed, rockrunners etc)
- Fix expericodegen errors (examples/cx16/keyboardhandler, rockrunners etc)
...