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fixed string + string/ string * number
This commit is contained in:
Irmen de Jong
parent
01ac5f29db
commit
9e54e11113
@ -57,6 +57,9 @@ internal fun Program.checkIdentifiers(errors: ErrorReporter) {
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val transforms = AstVariousTransforms(this)
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transforms.visit(this)
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transforms.applyModifications()
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val lit2decl = LiteralsToAutoVars(this)
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lit2decl.visit(this)
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lit2decl.applyModifications()
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}
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if (modules.map { it.name }.toSet().size != modules.size) {
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@ -832,10 +832,10 @@ internal class AstChecker(private val program: Program,
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}
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}
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if(leftDt !in NumericDatatypes)
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errors.err("left operand is not numeric", expr.left.position)
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if(rightDt!in NumericDatatypes)
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errors.err("right operand is not numeric", expr.right.position)
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if(leftDt !in NumericDatatypes && leftDt != DataType.STR)
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errors.err("left operand is not numeric or str", expr.left.position)
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if(rightDt!in NumericDatatypes && rightDt != DataType.STR)
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errors.err("right operand is not numeric or str", expr.right.position)
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if(leftDt!=rightDt)
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errors.err("left and right operands aren't the same type", expr.left.position)
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}
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@ -47,78 +47,59 @@ internal class AstVariousTransforms(private val program: Program) : AstWalker()
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return noModifications
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}
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override fun before(expr: BinaryExpression, parent: Node): Iterable<IAstModification> {
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when {
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expr.left is StringLiteralValue ->
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return listOf(IAstModification.ReplaceNode(
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expr,
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processBinaryExprWithString(expr.left as StringLiteralValue, expr.right, expr),
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parent
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))
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expr.right is StringLiteralValue ->
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return listOf(IAstModification.ReplaceNode(
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expr,
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processBinaryExprWithString(expr.right as StringLiteralValue, expr.left, expr),
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parent
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))
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override fun after(expr: BinaryExpression, parent: Node): Iterable<IAstModification> {
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val leftStr = expr.left as? StringLiteralValue
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val rightStr = expr.right as? StringLiteralValue
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if(expr.operator == "+") {
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val concatenatedString = concatString(expr)
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if(concatenatedString!=null)
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return listOf(IAstModification.ReplaceNode(expr, concatenatedString, parent))
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}
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return noModifications
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}
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override fun after(string: StringLiteralValue, parent: Node): Iterable<IAstModification> {
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if(string.parent !is VarDecl) {
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// replace the literal string by a identifier reference to a new local vardecl
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val vardecl = VarDecl.createAuto(string)
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val identifier = IdentifierReference(listOf(vardecl.name), vardecl.position)
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return listOf(
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IAstModification.ReplaceNode(string, identifier, parent),
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IAstModification.InsertFirst(vardecl, string.definingScope() as Node)
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)
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}
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return noModifications
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}
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override fun after(array: ArrayLiteralValue, parent: Node): Iterable<IAstModification> {
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val vardecl = array.parent as? VarDecl
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if(vardecl!=null) {
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// adjust the datatype of the array (to an educated guess)
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val arrayDt = array.type
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if(!arrayDt.istype(vardecl.datatype)) {
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val cast = array.cast(vardecl.datatype)
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if (cast != null && cast !== array)
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return listOf(IAstModification.ReplaceNode(vardecl.value!!, cast, vardecl))
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else if(expr.operator == "*") {
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if (leftStr!=null) {
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val amount = expr.right.constValue(program)
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if(amount!=null) {
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val string = leftStr.value.repeat(amount.number.toInt())
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val strval = StringLiteralValue(string, leftStr.altEncoding, expr.position)
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return listOf(IAstModification.ReplaceNode(expr, strval, parent))
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}
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}
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} else {
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val arrayDt = array.guessDatatype(program)
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if(arrayDt.isKnown) {
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// this array literal is part of an expression, turn it into an identifier reference
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val litval2 = array.cast(arrayDt.typeOrElse(DataType.STRUCT))
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if(litval2!=null) {
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val vardecl2 = VarDecl.createAuto(litval2)
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val identifier = IdentifierReference(listOf(vardecl2.name), vardecl2.position)
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return listOf(
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IAstModification.ReplaceNode(array, identifier, parent),
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IAstModification.InsertFirst(vardecl2, array.definingScope() as Node)
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)
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else if (rightStr!=null) {
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val amount = expr.right.constValue(program)
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if(amount!=null) {
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val string = rightStr.value.repeat(amount.number.toInt())
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val strval = StringLiteralValue(string, rightStr.altEncoding, expr.position)
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return listOf(IAstModification.ReplaceNode(expr, strval, parent))
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}
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}
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}
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return noModifications
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}
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private fun processBinaryExprWithString(string: StringLiteralValue, operand: Expression, expr: BinaryExpression): Expression {
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val constvalue = operand.constValue(program)
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if(constvalue!=null) {
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if (expr.operator == "*") {
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// repeat a string a number of times
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return StringLiteralValue(string.value.repeat(constvalue.number.toInt()), string.altEncoding, expr.position)
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private fun concatString(expr: BinaryExpression): StringLiteralValue? {
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val rightStrval = expr.right as? StringLiteralValue
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val leftStrval = expr.left as? StringLiteralValue
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return when {
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expr.operator!="+" -> null
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expr.left is BinaryExpression && rightStrval!=null -> {
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val subStrVal = concatString(expr.left as BinaryExpression)
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if(subStrVal==null)
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null
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else
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StringLiteralValue("${subStrVal.value}${rightStrval.value}", subStrVal.altEncoding, rightStrval.position)
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}
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expr.right is BinaryExpression && leftStrval!=null -> {
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val subStrVal = concatString(expr.right as BinaryExpression)
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if(subStrVal==null)
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null
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else
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StringLiteralValue("${leftStrval.value}${subStrVal.value}", subStrVal.altEncoding, leftStrval.position)
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}
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leftStrval!=null && rightStrval!=null -> {
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StringLiteralValue("${leftStrval.value}${rightStrval.value}", leftStrval.altEncoding, leftStrval.position)
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}
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else -> null
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}
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if(expr.operator == "+" && operand is StringLiteralValue) {
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// concatenate two strings
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return StringLiteralValue("${string.value}${operand.value}", string.altEncoding, expr.position)
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}
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return expr
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}
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}
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53
compiler/src/prog8/ast/processing/LiteralsToAutoVars.kt
Normal file
53
compiler/src/prog8/ast/processing/LiteralsToAutoVars.kt
Normal file
@ -0,0 +1,53 @@
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package prog8.ast.processing
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import prog8.ast.Node
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import prog8.ast.Program
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import prog8.ast.base.*
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import prog8.ast.expressions.*
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import prog8.ast.statements.*
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internal class LiteralsToAutoVars(private val program: Program) : AstWalker() {
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private val noModifications = emptyList<IAstModification>()
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override fun after(string: StringLiteralValue, parent: Node): Iterable<IAstModification> {
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if(string.parent !is VarDecl) {
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// replace the literal string by a identifier reference to a new local vardecl
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val vardecl = VarDecl.createAuto(string)
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val identifier = IdentifierReference(listOf(vardecl.name), vardecl.position)
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return listOf(
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IAstModification.ReplaceNode(string, identifier, parent),
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IAstModification.InsertFirst(vardecl, string.definingScope() as Node)
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)
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}
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return noModifications
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}
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override fun after(array: ArrayLiteralValue, parent: Node): Iterable<IAstModification> {
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val vardecl = array.parent as? VarDecl
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if(vardecl!=null) {
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// adjust the datatype of the array (to an educated guess)
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val arrayDt = array.type
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if(!arrayDt.istype(vardecl.datatype)) {
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val cast = array.cast(vardecl.datatype)
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if (cast != null && cast !== array)
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return listOf(IAstModification.ReplaceNode(vardecl.value!!, cast, vardecl))
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}
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} else {
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val arrayDt = array.guessDatatype(program)
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if(arrayDt.isKnown) {
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// this array literal is part of an expression, turn it into an identifier reference
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val litval2 = array.cast(arrayDt.typeOrElse(DataType.STRUCT))
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if(litval2!=null) {
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val vardecl2 = VarDecl.createAuto(litval2)
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val identifier = IdentifierReference(listOf(vardecl2.name), vardecl2.position)
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return listOf(
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IAstModification.ReplaceNode(array, identifier, parent),
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IAstModification.InsertFirst(vardecl2, array.definingScope() as Node)
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)
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}
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}
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}
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return noModifications
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}
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}
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@ -7,11 +7,10 @@ main {
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sub start() {
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; TODO fix multi- string concatenation:
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; txt.print("\nCommands are:\n"+
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; "buy jump inf cash\n" +
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; "sell teleport market hold\n" +
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; "fuel galhyp local quit\n")
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txt.print("\nCommands are:\n"+
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"buy jump inf cash\n" +
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"sell teleport market hold\n" +
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"fuel galhyp local quit\n")
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; str name = "irmen de jong"
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; uword strptr = &name
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@ -28,14 +27,6 @@ main {
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; txt.print_ub(strlen(strptr))
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; txt.chrout('\n')
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ubyte q
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for q in 0 to 255 {
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txt.print_ub(q)
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txt.chrout(' ')
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txt.print_uw(q*5) ; TODO fix
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txt.chrout('\n')
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}
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}
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@ -31,7 +31,10 @@ main {
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if num_chars {
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when input[0] {
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'?' -> {
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txt.print("\nCommands are:\nbuy jump info cash\nsell teleport market hold\nfuel galhyp local quit\n")
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txt.print("\nCommands are:\n"+
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"buy jump info cash\n"+
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"sell teleport market hold\n"+
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"fuel galhyp local quit\n")
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}
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'q' -> break
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'b' -> trader.do_buy()
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