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this is not modifying the ast

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This commit is contained in:
Irmen de Jong 2020-03-19 23:15:53 +01:00
parent 82dce2dd53
commit a191ec71a4
2 changed files with 6 additions and 7 deletions
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2
compiler/src/prog8/vm/astvm/AstVm.kt
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@ -189,7 +189,7 @@ class AstVm(val program: Program, compilationTarget: String) {
fun run() { fun run() {
try { try {
val init = VariablesCreator(runtimeVariables) val init = AstVmVariablesCreator(runtimeVariables)
init.visit(program) init.visit(program)
// initialize all global variables // initialize all global variables

11
compiler/src/prog8/vm/astvm/VariablesCreator.kt → compiler/src/prog8/vm/astvm/AstVmVariablesCreator.kt
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@ -8,8 +8,7 @@ import prog8.ast.base.VarDeclType
import prog8.ast.expressions.ArrayLiteralValue import prog8.ast.expressions.ArrayLiteralValue
import prog8.ast.expressions.NumericLiteralValue import prog8.ast.expressions.NumericLiteralValue
import prog8.ast.expressions.StringLiteralValue import prog8.ast.expressions.StringLiteralValue
import prog8.ast.processing.IAstModifyingVisitor import prog8.ast.processing.IAstVisitor
import prog8.ast.statements.Statement
import prog8.ast.statements.StructDecl import prog8.ast.statements.StructDecl
import prog8.ast.statements.VarDecl import prog8.ast.statements.VarDecl
import prog8.ast.statements.ZeropageWish import prog8.ast.statements.ZeropageWish
@ -17,10 +16,10 @@ import prog8.vm.RuntimeValueArray
import prog8.vm.RuntimeValueNumeric import prog8.vm.RuntimeValueNumeric
import prog8.vm.RuntimeValueString import prog8.vm.RuntimeValueString
class VariablesCreator(private val runtimeVariables: RuntimeVariables) : IAstModifyingVisitor { class AstVmVariablesCreator(private val runtimeVariables: RuntimeVariables) : IAstVisitor {
override fun visit(program: Program) { override fun visit(program: Program) {
// define the three registers as global variables // define the three registers as global variables, and set their initial values
runtimeVariables.define(program.namespace, Register.A.name, RuntimeValueNumeric(DataType.UBYTE, 0)) runtimeVariables.define(program.namespace, Register.A.name, RuntimeValueNumeric(DataType.UBYTE, 0))
runtimeVariables.define(program.namespace, Register.X.name, RuntimeValueNumeric(DataType.UBYTE, 255)) runtimeVariables.define(program.namespace, Register.X.name, RuntimeValueNumeric(DataType.UBYTE, 255))
runtimeVariables.define(program.namespace, Register.Y.name, RuntimeValueNumeric(DataType.UBYTE, 0)) runtimeVariables.define(program.namespace, Register.Y.name, RuntimeValueNumeric(DataType.UBYTE, 0))
@ -42,7 +41,7 @@ class VariablesCreator(private val runtimeVariables: RuntimeVariables) : IAstMod
super.visit(program) super.visit(program)
} }
override fun visit(decl: VarDecl): Statement { override fun visit(decl: VarDecl) {
// if the decl is part of a struct, just skip it // if the decl is part of a struct, just skip it
if(decl.parent !is StructDecl) { if(decl.parent !is StructDecl) {
when (decl.type) { when (decl.type) {
@ -75,6 +74,6 @@ class VariablesCreator(private val runtimeVariables: RuntimeVariables) : IAstMod
} }
} }
} }
return super.visit(decl) super.visit(decl)
} }
} }