dim_bootstrap.py

# dim_bootstrap.py — Self-Hosting Compiler Bootstrapper
#
# Framework for a self-hosting Dim compiler (written in Dim).
# This is the foundation for Phase 8 - self-hosting.

from typing import Dict, List, Optional, Any
from dataclasses import dataclass


@dataclass
class BootstrapPhase:
    name: str
    description: str
    implemented: bool


PHASES = [
    BootstrapPhase("Tokenizer", "Convert source text to tokens", True),
    BootstrapPhase("Parser", "Build AST from tokens", True),
    BootstrapPhase("Type Checker", "Type inference and validation", True),
    BootstrapPhase("MIR Lowering", "AST to Mid-level IR", True),
    BootstrapPhase("Code Generation", "LLVM IR generation", True),
    BootstrapPhase("Self-Hosting", "Compiler written in Dim", False),
]


class SelfHostingFramework:
    def __init__(self):
        self.compiled_modules: Dict[str, str] = {}

    def register_module(self, name: str, dim_code: str):
        self.compiled_modules[name] = dim_code

    def get_module(self, name: str) -> Optional[str]:
        return self.compiled_modules.get(name)

    def compile_module(self, dim_code: str) -> bool:
        from dim_lexer import Lexer
        from dim_parser import Parser
        from dim_semantic import SemanticAnalyzer
        from dim_module_resolver import ModuleResolver
        from dim_mir_lowering import lower_program
        from dim_mir_to_llvm import LLVMGenerator

        try:
            tokens = Lexer(dim_code, "<bootstrap>").tokenize()
            parser = Parser(tokens, dim_code, "<bootstrap>")
            ast = parser.parse_program()

            if parser.diag.has_errors:
                return False

            resolver = ModuleResolver("<bootstrap>")
            sem = SemanticAnalyzer(dim_code, "<bootstrap>", resolver)
            resolver.resolve_program(ast, dim_code, "<bootstrap>")

            if not sem.analyze(ast):
                return False

            module = lower_program(ast)
            gen = LLVMGenerator()
            llvm_ir = gen.generate(module)

            return True
        except Exception:
            return False

    def status(self):
        print("Self-Hosting Bootstrap Status")
        print("=" * 40)
        for phase in PHASES:
            status = "✓" if phase.implemented else "✗"
            print(f"{status} {phase.name}: {phase.description}")
        print("=" * 40)

        unimplemented = sum(1 for p in PHASES if not p.implemented)
        print(f"\nProgress: {len(PHASES) - unimplemented}/{len(PHASES)} phases")


def write_bootstrap_modules():
    framework = SelfHostingFramework()

    print("Creating bootstrap modules...")

    token_module = """
# Token types for the Dim language
enum TokenType:
    Identifier
    Keyword
    Number
    String
    Operator
    LParen
    RParen
    LBrace
    RBrace
    LBracket
    RBracket
    Comma
    Dot
    Colon
    Semicolon
    Newline
    Indent
    Dedent
    EOF

struct Token:
    kind: TokenType
    value: str
    line: i32
    column: i32

fn token_to_string(t: Token) -> str:
    return t.kind.to_string() + ":" + t.value
"""

    framework.register_module("token", token_module)
    print("✓ token.dim")

    lexer_module = """
# Simple lexer for Dim
import token

fn lex(source: str) -> [Token]:
    tokens = []
    # Simplified - full implementation would be here
    return tokens
"""

    framework.register_module("lexer", lexer_module)
    print("✓ lexer.dim")

    print(f"\nRegistered {len(framework.compiled_modules)} bootstrap modules")

    return framework


def main():
    framework = SelfHostingFramework()
    framework.status()

    print("\n--- Writing Bootstrap Modules ---")
    framework = write_bootstrap_modules()

    print("\nNote: Full self-hosting requires implementing each compiler")
    print("      component in Dim. This is a multi-month effort.")


if __name__ == "__main__":
    main()