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'Program' is not an ast Node

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This commit is contained in:
Irmen de Jong 2021-10-30 00:25:34 +02:00
parent d7d2eefa4f
commit 3767b4bbe7
13 changed files with 217 additions and 206 deletions
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98
compiler/src/prog8/compiler/Compiler.kt
View File

@ -24,7 +24,7 @@ import kotlin.system.measureTimeMillis
class CompilationResult(val success: Boolean,
val programAst: Program,
val program: Program,
val programName: String,
val compTarget: ICompilationTarget,
val importedFiles: List<Path>)
@ -39,7 +39,7 @@ fun compileProgram(filepath: Path,
outputDir: Path,
errors: IErrorReporter = ErrorReporter()): CompilationResult {
var programName = ""
lateinit var programAst: Program
lateinit var program: Program
lateinit var importedFiles: List<Path>
val compTarget =
@ -52,31 +52,31 @@ fun compileProgram(filepath: Path,
try {
val totalTime = measureTimeMillis {
// import main module and everything it needs
val (ast, compilationOptions, imported) = parseImports(filepath, errors, compTarget, sourceDirs)
val (programresult, compilationOptions, imported) = parseImports(filepath, errors, compTarget, sourceDirs)
compilationOptions.slowCodegenWarnings = slowCodegenWarnings
compilationOptions.optimize = optimize
programAst = ast
program = programresult
importedFiles = imported
processAst(programAst, errors, compilationOptions)
processAst(program, errors, compilationOptions)
if (compilationOptions.optimize)
optimizeAst(
programAst,
program,
errors,
BuiltinFunctionsFacade(BuiltinFunctions),
compTarget
)
postprocessAst(programAst, errors, compilationOptions)
postprocessAst(program, errors, compilationOptions)
// println("*********** AST BEFORE ASSEMBLYGEN *************")
// printAst(programAst)
// printAst(program)
if (writeAssembly) {
val result = writeAssembly(programAst, errors, outputDir, compilationOptions)
val result = writeAssembly(program, errors, outputDir, compilationOptions)
when (result) {
is WriteAssemblyResult.Ok -> programName = result.filename
is WriteAssemblyResult.Fail -> {
System.err.println(result.error)
return CompilationResult(false, programAst, programName, compTarget, importedFiles)
return CompilationResult(false, program, programName, compTarget, importedFiles)
}
}
}
@ -84,7 +84,7 @@ fun compileProgram(filepath: Path,
System.out.flush()
System.err.flush()
println("\nTotal compilation+assemble time: ${totalTime / 1000.0} sec.")
return CompilationResult(true, programAst, programName, compTarget, importedFiles)
return CompilationResult(true, program, programName, compTarget, importedFiles)
} catch (px: ParseError) {
System.err.print("\u001b[91m") // bright red
System.err.println("${px.position.toClickableStr()} parse error: ${px.message}".trim())
@ -155,20 +155,20 @@ fun parseImports(filepath: Path,
sourceDirs: List<String>): Triple<Program, CompilationOptions, List<Path>> {
println("Compiler target: ${compTarget.name}. Parsing...")
val bf = BuiltinFunctionsFacade(BuiltinFunctions)
val programAst = Program(filepath.nameWithoutExtension, bf, compTarget, compTarget)
bf.program = programAst
val program = Program(filepath.nameWithoutExtension, bf, compTarget, compTarget)
bf.program = program
val importer = ModuleImporter(programAst, compTarget.name, errors, sourceDirs)
val importer = ModuleImporter(program, compTarget.name, errors, sourceDirs)
val importedModuleResult = importer.importModule(filepath)
importedModuleResult.onFailure { throw it }
errors.report()
val importedFiles = programAst.modules.map { it.source }
val importedFiles = program.modules.map { it.source }
.filter { it.isFromFilesystem }
.map { Path(it.origin) }
val compilerOptions = determineCompilationOptions(programAst, compTarget)
val compilerOptions = determineCompilationOptions(program, compTarget)
if (compilerOptions.launcher == LauncherType.BASIC && compilerOptions.output != OutputType.PRG)
throw ParsingFailedError("${programAst.modules.first().position} BASIC launcher requires output type PRG.")
throw ParsingFailedError("${program.modules.first().position} BASIC launcher requires output type PRG.")
// depending on the machine and compiler options we may have to include some libraries
for(lib in compTarget.machine.importLibs(compilerOptions, compTarget.name))
@ -178,7 +178,7 @@ fun parseImports(filepath: Path,
importer.importLibraryModule("math")
importer.importLibraryModule("prog8_lib")
errors.report()
return Triple(programAst, compilerOptions, importedFiles)
return Triple(program, compilerOptions, importedFiles)
}
fun determineCompilationOptions(program: Program, compTarget: ICompilationTarget): CompilationOptions {
@ -241,44 +241,44 @@ fun determineCompilationOptions(program: Program, compTarget: ICompilationTarget
)
}
private fun processAst(programAst: Program, errors: IErrorReporter, compilerOptions: CompilationOptions) {
private fun processAst(program: Program, errors: IErrorReporter, compilerOptions: CompilationOptions) {
// perform initial syntax checks and processings
println("Processing for target ${compilerOptions.compTarget.name}...")
programAst.preprocessAst()
programAst.checkIdentifiers(errors, compilerOptions)
program.preprocessAst()
program.checkIdentifiers(errors, compilerOptions)
errors.report()
// TODO: turning char literals into UBYTEs via an encoding should really happen in code gen - but for that we'd need DataType.CHAR
// NOTE: we will then lose the opportunity to do constant-folding on any expression containing a char literal, but how often will those occur?
// Also they might be optimized away eventually in codegen or by the assembler even
programAst.charLiteralsToUByteLiterals(compilerOptions.compTarget)
programAst.constantFold(errors, compilerOptions.compTarget)
program.charLiteralsToUByteLiterals(compilerOptions.compTarget)
program.constantFold(errors, compilerOptions.compTarget)
errors.report()
programAst.reorderStatements(errors)
program.reorderStatements(errors)
errors.report()
programAst.addTypecasts(errors)
program.addTypecasts(errors)
errors.report()
programAst.variousCleanups(programAst, errors)
program.variousCleanups(program, errors)
errors.report()
programAst.checkValid(compilerOptions, errors, compilerOptions.compTarget)
program.checkValid(compilerOptions, errors, compilerOptions.compTarget)
errors.report()
programAst.checkIdentifiers(errors, compilerOptions)
program.checkIdentifiers(errors, compilerOptions)
errors.report()
}
private fun optimizeAst(programAst: Program, errors: IErrorReporter, functions: IBuiltinFunctions, compTarget: ICompilationTarget) {
private fun optimizeAst(program: Program, errors: IErrorReporter, functions: IBuiltinFunctions, compTarget: ICompilationTarget) {
// optimize the parse tree
println("Optimizing...")
val remover = UnusedCodeRemover(programAst, errors, compTarget)
remover.visit(programAst)
val remover = UnusedCodeRemover(program, errors, compTarget)
remover.visit(program)
remover.applyModifications()
while (true) {
// keep optimizing expressions and statements until no more steps remain
val optsDone1 = programAst.simplifyExpressions()
val optsDone2 = programAst.splitBinaryExpressions(compTarget)
val optsDone3 = programAst.optimizeStatements(errors, functions, compTarget)
programAst.constantFold(errors, compTarget) // because simplified statements and expressions can result in more constants that can be folded away
val optsDone1 = program.simplifyExpressions()
val optsDone2 = program.splitBinaryExpressions(compTarget)
val optsDone3 = program.optimizeStatements(errors, functions, compTarget)
program.constantFold(errors, compTarget) // because simplified statements and expressions can result in more constants that can be folded away
errors.report()
if (optsDone1 + optsDone2 + optsDone3 == 0)
break
@ -287,17 +287,17 @@ private fun optimizeAst(programAst: Program, errors: IErrorReporter, functions:
errors.report()
}
private fun postprocessAst(programAst: Program, errors: IErrorReporter, compilerOptions: CompilationOptions) {
programAst.addTypecasts(errors)
private fun postprocessAst(program: Program, errors: IErrorReporter, compilerOptions: CompilationOptions) {
program.addTypecasts(errors)
errors.report()
programAst.variousCleanups(programAst, errors)
programAst.checkValid(compilerOptions, errors, compilerOptions.compTarget) // check if final tree is still valid
program.variousCleanups(program, errors)
program.checkValid(compilerOptions, errors, compilerOptions.compTarget) // check if final tree is still valid
errors.report()
val callGraph = CallGraph(programAst)
val callGraph = CallGraph(program)
callGraph.checkRecursiveCalls(errors)
errors.report()
programAst.verifyFunctionArgTypes()
programAst.moveMainAndStartToFirst()
program.verifyFunctionArgTypes()
program.moveMainAndStartToFirst()
}
private sealed class WriteAssemblyResult {
@ -305,20 +305,20 @@ private sealed class WriteAssemblyResult {
class Fail(val error: String): WriteAssemblyResult()
}
private fun writeAssembly(programAst: Program,
private fun writeAssembly(program: Program,
errors: IErrorReporter,
outputDir: Path,
compilerOptions: CompilationOptions
): WriteAssemblyResult {
// asm generation directly from the Ast
programAst.processAstBeforeAsmGeneration(errors, compilerOptions.compTarget)
program.processAstBeforeAsmGeneration(errors, compilerOptions.compTarget)
errors.report()
// printAst(programAst)
// printAst(program)
compilerOptions.compTarget.machine.initializeZeropage(compilerOptions)
val assembly = asmGeneratorFor(compilerOptions.compTarget,
programAst,
program,
errors,
compilerOptions.compTarget.machine.zeropage,
compilerOptions,
@ -338,10 +338,10 @@ private fun writeAssembly(programAst: Program,
}
}
fun printAst(programAst: Program) {
fun printAst(program: Program) {
println()
val printer = AstToSourceTextConverter(::print, programAst)
printer.visit(programAst)
val printer = AstToSourceTextConverter(::print, program)
printer.visit(program)
println()
}

2
compiler/src/prog8/compiler/astprocessing/AstChecker.kt
View File

@ -27,7 +27,7 @@ internal class AstChecker(private val program: Program,
if(mainBlocks.size>1)
errors.err("more than one 'main' block", mainBlocks[0].position)
if(mainBlocks.isEmpty())
errors.err("there is no 'main' block", program.modules.firstOrNull()?.position ?: program.position)
errors.err("there is no 'main' block", program.modules.firstOrNull()?.position ?: Position.DUMMY)
for(mainBlock in mainBlocks) {
val startSub = mainBlock.subScope("start") as? Subroutine

10
compiler/test/TestCallgraph.kt
View File

@ -26,11 +26,11 @@ class TestCallgraph {
}
"""
val result = compileText(C64Target, false, sourcecode).assertSuccess()
val graph = CallGraph(result.programAst)
val graph = CallGraph(result.program)
assertEquals(1, graph.imports.size)
assertEquals(1, graph.importedBy.size)
val toplevelModule = result.programAst.toplevelModule
val toplevelModule = result.program.toplevelModule
val importedModule = graph.imports.getValue(toplevelModule).single()
assertEquals("string", importedModule.name)
val importedBy = graph.importedBy.getValue(importedModule).single()
@ -45,7 +45,7 @@ class TestCallgraph {
assertFalse(sub in graph.calls)
assertFalse(sub in graph.calledBy)
if(sub === result.programAst.entrypoint)
if(sub === result.program.entrypoint)
assertFalse(graph.unused(sub), "start() should always be marked as used to avoid having it removed")
else
assertTrue(graph.unused(sub))
@ -66,11 +66,11 @@ class TestCallgraph {
}
"""
val result = compileText(C64Target, false, sourcecode).assertSuccess()
val graph = CallGraph(result.programAst)
val graph = CallGraph(result.program)
assertEquals(1, graph.imports.size)
assertEquals(1, graph.importedBy.size)
val toplevelModule = result.programAst.toplevelModule
val toplevelModule = result.program.toplevelModule
val importedModule = graph.imports.getValue(toplevelModule).single()
assertEquals("string", importedModule.name)
val importedBy = graph.importedBy.getValue(importedModule).single()

6
compiler/test/TestCompilerOnCharLit.kt
View File

@ -34,7 +34,7 @@ class TestCompilerOnCharLit {
}
""").assertSuccess()
val program = result.programAst
val program = result.program
val startSub = program.entrypoint
val funCall = startSub.statements.filterIsInstance<IFunctionCall>()[0]
@ -58,7 +58,7 @@ class TestCompilerOnCharLit {
}
""").assertSuccess()
val program = result.programAst
val program = result.program
val startSub = program.entrypoint
val funCall = startSub.statements.filterIsInstance<IFunctionCall>()[0]
@ -93,7 +93,7 @@ class TestCompilerOnCharLit {
}
""").assertSuccess()
val program = result.programAst
val program = result.program
val startSub = program.entrypoint
val funCall = startSub.statements.filterIsInstance<IFunctionCall>()[0]

4
compiler/test/TestCompilerOnImportsAndIncludes.kt
View File

@ -37,7 +37,7 @@ class TestCompilerOnImportsAndIncludes {
val result = compileFile(platform, optimize = false, fixturesDir, filepath.name)
.assertSuccess()
val program = result.programAst
val program = result.program
val startSub = program.entrypoint
val strLits = startSub.statements
.filterIsInstance<FunctionCallStatement>()
@ -62,7 +62,7 @@ class TestCompilerOnImportsAndIncludes {
val result = compileFile(platform, optimize = false, fixturesDir, filepath.name)
.assertSuccess()
val program = result.programAst
val program = result.program
val startSub = program.entrypoint
val args = startSub.statements
.filterIsInstance<FunctionCallStatement>()

12
compiler/test/TestCompilerOnRanges.kt
View File

@ -43,7 +43,7 @@ class TestCompilerOnRanges {
}
""").assertSuccess()
val program = result.programAst
val program = result.program
val startSub = program.entrypoint
val decl = startSub
.statements.filterIsInstance<VarDecl>()[0]
@ -72,7 +72,7 @@ class TestCompilerOnRanges {
}
""").assertSuccess()
val program = result.programAst
val program = result.program
val startSub = program.entrypoint
val decl = startSub
.statements.filterIsInstance<VarDecl>()[0]
@ -154,7 +154,7 @@ class TestCompilerOnRanges {
}
""").assertSuccess()
val program = result.programAst
val program = result.program
val startSub = program.entrypoint
val iterable = startSub
.statements.filterIsInstance<ForLoop>()
@ -185,7 +185,7 @@ class TestCompilerOnRanges {
}
""").assertSuccess()
val program = result.programAst
val program = result.program
val startSub = program.entrypoint
val rangeExpr = startSub
.statements.filterIsInstance<ForLoop>()
@ -212,7 +212,7 @@ class TestCompilerOnRanges {
}
""").assertSuccess()
val program = result.programAst
val program = result.program
val startSub = program.entrypoint
val rangeExpr = startSub
.statements.filterIsInstance<ForLoop>()
@ -256,7 +256,7 @@ class TestCompilerOnRanges {
}
""").assertSuccess()
val program = result.programAst
val program = result.program
val startSub = program.entrypoint
val iterable = startSub
.statements.filterIsInstance<ForLoop>()

10
compiler/test/TestImportedModulesOrderAndOptions.kt
View File

@ -30,9 +30,9 @@ main {
}
}
""").assertSuccess()
assertTrue(result.programAst.toplevelModule.name.startsWith("on_the_fly_test"))
assertTrue(result.program.toplevelModule.name.startsWith("on_the_fly_test"))
val moduleNames = result.programAst.modules.map { it.name }
val moduleNames = result.program.modules.map { it.name }
assertTrue(moduleNames[0].startsWith("on_the_fly_test"), "main module must be first")
assertEquals(listOf(
"prog8_interned_strings",
@ -44,7 +44,7 @@ main {
"prog8_lib"
), moduleNames.drop(1), "module order in parse tree")
assertTrue(result.programAst.toplevelModule.name.startsWith("on_the_fly_test"))
assertTrue(result.program.toplevelModule.name.startsWith("on_the_fly_test"))
}
@Test
@ -61,8 +61,8 @@ main {
}
}
""").assertSuccess()
assertTrue(result.programAst.toplevelModule.name.startsWith("on_the_fly_test"))
val options = determineCompilationOptions(result.programAst, C64Target)
assertTrue(result.program.toplevelModule.name.startsWith("on_the_fly_test"))
val options = determineCompilationOptions(result.program, C64Target)
assertTrue(options.floats)
assertEquals(ZeropageType.DONTUSE, options.zeropage)
assertTrue(options.noSysInit)

8
compiler/test/TestOptimization.kt
View File

@ -26,10 +26,10 @@ class TestOptimization {
}
"""
val result = compileText(C64Target, true, sourcecode).assertSuccess()
val toplevelModule = result.programAst.toplevelModule
val toplevelModule = result.program.toplevelModule
val mainBlock = toplevelModule.statements.single() as Block
val startSub = mainBlock.statements.single() as Subroutine
assertSame(result.programAst.entrypoint, startSub)
assertSame(result.program.entrypoint, startSub)
assertEquals("start", startSub.name, "only start sub should remain")
assertTrue(startSub.statements.single() is Return, "compiler has inserted return in empty subroutines")
}
@ -48,11 +48,11 @@ class TestOptimization {
}
"""
val result = compileText(C64Target, true, sourcecode).assertSuccess()
val toplevelModule = result.programAst.toplevelModule
val toplevelModule = result.program.toplevelModule
val mainBlock = toplevelModule.statements.single() as Block
val startSub = mainBlock.statements[0] as Subroutine
val emptySub = mainBlock.statements[1] as Subroutine
assertSame(result.programAst.entrypoint, startSub)
assertSame(result.program.entrypoint, startSub)
assertEquals("start", startSub.name)
assertEquals("empty", emptySub.name)
assertTrue(emptySub.statements.single() is Return, "compiler has inserted return in empty subroutines")

26
compiler/test/TestScoping.kt
View File

@ -2,19 +2,35 @@ package prog8tests
import org.junit.jupiter.api.Test
import org.junit.jupiter.api.TestInstance
import prog8.ast.GlobalNamespace
import prog8.ast.base.ParentSentinel
import prog8.ast.expressions.NumericLiteralValue
import prog8.ast.statements.*
import prog8.compiler.target.C64Target
import prog8tests.helpers.assertSuccess
import prog8tests.helpers.compileText
import kotlin.test.assertEquals
import kotlin.test.assertFalse
import kotlin.test.assertTrue
import kotlin.test.*
@TestInstance(TestInstance.Lifecycle.PER_CLASS)
class TestScoping {
@Test
fun testModulesParentIsGlobalNamespace() {
val src = """
main {
sub start() {
}
}
"""
val result = compileText(C64Target, false, src, writeAssembly = false).assertSuccess()
val module = result.program.toplevelModule
assertIs<GlobalNamespace>(module.parent)
assertSame(result.program, module.program)
assertIs<ParentSentinel>(module.parent.parent)
}
@Test
fun testAnonScopeVarsMovedIntoSubroutineScope() {
val src = """
@ -29,7 +45,7 @@ class TestScoping {
"""
val result = compileText(C64Target, false, src, writeAssembly = false).assertSuccess()
val module = result.programAst.toplevelModule
val module = result.program.toplevelModule
val mainBlock = module.statements.single() as Block
val start = mainBlock.statements.single() as Subroutine
val repeatbody = start.statements.filterIsInstance<RepeatLoop>().single().body
@ -100,7 +116,7 @@ class TestScoping {
"""
val result = compileText(C64Target, false, src, writeAssembly = true).assertSuccess()
val module = result.programAst.toplevelModule
val module = result.program.toplevelModule
val mainBlock = module.statements.single() as Block
val start = mainBlock.statements.single() as Subroutine
val labels = start.statements.filterIsInstance<Label>()

6
compiler/test/TestSubroutines.kt
View File

@ -46,7 +46,7 @@ class TestSubroutines {
}
"""
val result = compileText(C64Target, false, text, writeAssembly = false).assertSuccess()
val module = result.programAst.toplevelModule
val module = result.program.toplevelModule
val mainBlock = module.statements.single() as Block
val asmfunc = mainBlock.statements.filterIsInstance<Subroutine>().single { it.name=="asmfunc"}
val func = mainBlock.statements.filterIsInstance<Subroutine>().single { it.name=="func"}
@ -94,7 +94,7 @@ class TestSubroutines {
}
"""
val result = compileText(C64Target, false, text, writeAssembly = true).assertSuccess()
val module = result.programAst.toplevelModule
val module = result.program.toplevelModule
val mainBlock = module.statements.single() as Block
val asmfunc = mainBlock.statements.filterIsInstance<Subroutine>().single { it.name=="asmfunc"}
val func = mainBlock.statements.filterIsInstance<Subroutine>().single { it.name=="func"}
@ -170,7 +170,7 @@ class TestSubroutines {
"""
val result = compileText(C64Target, false, text, writeAssembly = false).assertSuccess()
val module = result.programAst.toplevelModule
val module = result.program.toplevelModule
val mainBlock = module.statements.single() as Block
val asmfunc = mainBlock.statements.filterIsInstance<Subroutine>().single { it.name=="asmfunc"}
val func = mainBlock.statements.filterIsInstance<Subroutine>().single { it.name=="func"}

118
compilerAst/src/prog8/ast/AstToplevel.kt
View File

@ -3,12 +3,9 @@ package prog8.ast
import prog8.ast.base.*
import prog8.ast.expressions.Expression
import prog8.ast.expressions.IdentifierReference
import prog8.ast.expressions.StringLiteralValue
import prog8.ast.statements.*
import prog8.ast.walk.AstWalker
import prog8.ast.walk.IAstVisitor
import prog8.compilerinterface.IMemSizer
import prog8.compilerinterface.IStringEncoding
import prog8.parser.SourceCode
const val internedStringsModuleName = "prog8_interned_strings"
@ -284,121 +281,6 @@ interface Node {
}
/*********** Everything starts from here, the Program; zero or more modules *************/
class Program(val name: String,
val builtinFunctions: IBuiltinFunctions,
val memsizer: IMemSizer,
val encoding: IStringEncoding
): Node {
private val _modules = mutableListOf<Module>()
val modules: List<Module> = _modules
val namespace: GlobalNamespace = GlobalNamespace(modules)
init {
// insert a container module for all interned strings later
val internedStringsModule = Module(mutableListOf(), Position.DUMMY, SourceCode.Generated(internedStringsModuleName))
val block = Block(internedStringsModuleName, null, mutableListOf(), true, Position.DUMMY)
internedStringsModule.statements.add(block)
_modules.add(0, internedStringsModule)
internedStringsModule.linkParents(namespace)
internedStringsModule.program = this
}
fun addModule(module: Module): Program {
require(null == _modules.firstOrNull { it.name == module.name })
{ "module '${module.name}' already present" }
_modules.add(module)
module.linkIntoProgram(this)
return this
}
fun removeModule(module: Module) = _modules.remove(module)
fun moveModuleToFront(module: Module): Program {
require(_modules.contains(module))
{ "Not a module of this program: '${module.name}'"}
_modules.remove(module)
_modules.add(0, module)
return this
}
val allBlocks: List<Block>
get() = modules.flatMap { it.statements.filterIsInstance<Block>() }
val entrypoint: Subroutine
get() {
val mainBlocks = allBlocks.filter { it.name == "main" }
return when (mainBlocks.size) {
0 -> throw FatalAstException("no 'main' block")
1 -> mainBlocks[0].subScope("start") as Subroutine
else -> throw FatalAstException("more than one 'main' block")
}
}
val toplevelModule: Module
get() = modules.first { it.name!=internedStringsModuleName }
val definedLoadAddress: Int
get() = toplevelModule.loadAddress
var actualLoadAddress: Int = 0
private val internedStringsUnique = mutableMapOf<Pair<String, Boolean>, List<String>>()
fun internString(string: StringLiteralValue): List<String> {
// Move a string literal into the internal, deduplicated, string pool
// replace it with a variable declaration that points to the entry in the pool.
if(string.parent is VarDecl) {
// deduplication can only be performed safely for known-const strings (=string literals OUTSIDE OF A VARDECL)!
throw FatalAstException("cannot intern a string literal that's part of a vardecl")
}
fun getScopedName(string: StringLiteralValue): List<String> {
val internedStringsBlock = modules
.first { it.name == internedStringsModuleName }.statements
.first { it is Block && it.name == internedStringsModuleName } as Block
val varName = "string_${internedStringsBlock.statements.size}"
val decl = VarDecl(
VarDeclType.VAR, DataType.STR, ZeropageWish.NOT_IN_ZEROPAGE, null, varName, string,
isArray = false, autogeneratedDontRemove = true, sharedWithAsm = false, position = string.position
)
internedStringsBlock.statements.add(decl)
decl.linkParents(internedStringsBlock)
return listOf(internedStringsModuleName, decl.name)
}
val key = Pair(string.value, string.altEncoding)
val existing = internedStringsUnique[key]
if (existing != null)
return existing
val scopedName = getScopedName(string)
internedStringsUnique[key] = scopedName
return scopedName
}
override val position: Position = Position.DUMMY
override var parent: Node
get() = throw FatalAstException("program has no parent")
set(_) = throw FatalAstException("can't set parent of program")
override fun linkParents(parent: Node) {
modules.forEach {
it.linkParents(namespace)
}
}
override fun replaceChildNode(node: Node, replacement: Node) {
require(node is Module && replacement is Module)
val idx = _modules.indexOfFirst { it===node }
_modules[idx] = replacement
replacement.linkIntoProgram(this)
}
}
open class Module(final override var statements: MutableList<Statement>,
final override val position: Position,
val source: SourceCode) : Node, INameScope {

112
compilerAst/src/prog8/ast/Program.kt Normal file
View File

@ -0,0 +1,112 @@
package prog8.ast
import prog8.ast.base.DataType
import prog8.ast.base.FatalAstException
import prog8.ast.base.Position
import prog8.ast.base.VarDeclType
import prog8.ast.expressions.StringLiteralValue
import prog8.ast.statements.Block
import prog8.ast.statements.Subroutine
import prog8.ast.statements.VarDecl
import prog8.ast.statements.ZeropageWish
import prog8.compilerinterface.IMemSizer
import prog8.compilerinterface.IStringEncoding
import prog8.parser.SourceCode
/*********** Everything starts from here, the Program; zero or more modules *************/
class Program(val name: String,
val builtinFunctions: IBuiltinFunctions,
val memsizer: IMemSizer,
val encoding: IStringEncoding
) {
private val _modules = mutableListOf<Module>()
val modules: List<Module> = _modules
val namespace: GlobalNamespace = GlobalNamespace(modules)
init {
// insert a container module for all interned strings later
val internedStringsModule =
Module(mutableListOf(), Position.DUMMY, SourceCode.Generated(internedStringsModuleName))
val block = Block(internedStringsModuleName, null, mutableListOf(), true, Position.DUMMY)
internedStringsModule.statements.add(block)
_modules.add(0, internedStringsModule)
internedStringsModule.linkParents(namespace)
internedStringsModule.program = this
}
fun addModule(module: Module): Program {
require(null == _modules.firstOrNull { it.name == module.name })
{ "module '${module.name}' already present" }
_modules.add(module)
module.linkIntoProgram(this)
return this
}
fun removeModule(module: Module) = _modules.remove(module)
fun moveModuleToFront(module: Module): Program {
require(_modules.contains(module))
{ "Not a module of this program: '${module.name}'"}
_modules.remove(module)
_modules.add(0, module)
return this
}
val allBlocks: List<Block>
get() = modules.flatMap { it.statements.filterIsInstance<Block>() }
val entrypoint: Subroutine
get() {
val mainBlocks = allBlocks.filter { it.name == "main" }
return when (mainBlocks.size) {
0 -> throw FatalAstException("no 'main' block")
1 -> mainBlocks[0].subScope("start") as Subroutine
else -> throw FatalAstException("more than one 'main' block")
}
}
val toplevelModule: Module
get() = modules.first { it.name!= internedStringsModuleName }
val definedLoadAddress: Int
get() = toplevelModule.loadAddress
var actualLoadAddress: Int = 0
private val internedStringsUnique = mutableMapOf<Pair<String, Boolean>, List<String>>()
fun internString(string: StringLiteralValue): List<String> {
// Move a string literal into the internal, deduplicated, string pool
// replace it with a variable declaration that points to the entry in the pool.
if(string.parent is VarDecl) {
// deduplication can only be performed safely for known-const strings (=string literals OUTSIDE OF A VARDECL)!
throw FatalAstException("cannot intern a string literal that's part of a vardecl")
}
fun getScopedName(string: StringLiteralValue): List<String> {
val internedStringsBlock = modules
.first { it.name == internedStringsModuleName }.statements
.first { it is Block && it.name == internedStringsModuleName } as Block
val varName = "string_${internedStringsBlock.statements.size}"
val decl = VarDecl(
VarDeclType.VAR, DataType.STR, ZeropageWish.NOT_IN_ZEROPAGE, null, varName, string,
isArray = false, autogeneratedDontRemove = true, sharedWithAsm = false, position = string.position
)
internedStringsBlock.statements.add(decl)
decl.linkParents(internedStringsBlock)
return listOf(internedStringsModuleName, decl.name)
}
val key = Pair(string.value, string.altEncoding)
val existing = internedStringsUnique[key]
if (existing != null)
return existing
val scopedName = getScopedName(string)
internedStringsUnique[key] = scopedName
return scopedName
}
}

11
compilerAst/src/prog8/ast/walk/AstWalker.kt
View File

@ -2,6 +2,7 @@ package prog8.ast.walk
import prog8.ast.*
import prog8.ast.base.FatalAstException
import prog8.ast.base.ParentSentinel
import prog8.ast.expressions.*
import prog8.ast.statements.*
@ -105,7 +106,7 @@ abstract class AstWalker {
open fun before(nopStatement: NopStatement, parent: Node): Iterable<IAstModification> = noModifications
open fun before(numLiteral: NumericLiteralValue, parent: Node): Iterable<IAstModification> = noModifications
open fun before(postIncrDecr: PostIncrDecr, parent: Node): Iterable<IAstModification> = noModifications
open fun before(program: Program, parent: Node): Iterable<IAstModification> = noModifications
open fun before(program: Program): Iterable<IAstModification> = noModifications
open fun before(range: RangeExpr, parent: Node): Iterable<IAstModification> = noModifications
open fun before(untilLoop: UntilLoop, parent: Node): Iterable<IAstModification> = noModifications
open fun before(returnStmt: Return, parent: Node): Iterable<IAstModification> = noModifications
@ -146,7 +147,7 @@ abstract class AstWalker {
open fun after(nopStatement: NopStatement, parent: Node): Iterable<IAstModification> = noModifications
open fun after(numLiteral: NumericLiteralValue, parent: Node): Iterable<IAstModification> = noModifications
open fun after(postIncrDecr: PostIncrDecr, parent: Node): Iterable<IAstModification> = noModifications
open fun after(program: Program, parent: Node): Iterable<IAstModification> = noModifications
open fun after(program: Program): Iterable<IAstModification> = noModifications
open fun after(range: RangeExpr, parent: Node): Iterable<IAstModification> = noModifications
open fun after(untilLoop: UntilLoop, parent: Node): Iterable<IAstModification> = noModifications
open fun after(returnStmt: Return, parent: Node): Iterable<IAstModification> = noModifications
@ -196,9 +197,9 @@ abstract class AstWalker {
}
fun visit(program: Program) {
track(before(program, program), program, program)
program.modules.forEach { it.accept(this, program) }
track(after(program, program), program, program)
track(before(program), ParentSentinel, program.namespace)
program.modules.forEach { it.accept(this, program.namespace) }
track(after(program), ParentSentinel, program.namespace)
}
fun visit(module: Module, parent: Node) {