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308 lines (274 loc) · 9.54 KB
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// Copyright (C) 2022-2026 Exaloop Inc. <https://exaloop.io>
#include "cache.h"
#include <chrono>
#include <ranges>
#include <string>
#include <vector>
#include "codon/cir/pyextension.h"
#include "codon/cir/util/irtools.h"
#include "codon/parser/common.h"
#include "codon/parser/peg/peg.h"
#include "codon/parser/visitors/translate/translate.h"
#include "codon/parser/visitors/typecheck/ctx.h"
#include "codon/parser/visitors/typecheck/typecheck.h"
namespace codon::ast {
const std::string VAR_ARGV = getMangledVar("", "__argv__");
const std::string FN_OPTIONAL_UNWRAP =
getMangledFunc("std.internal.types.optional", "unwrap");
Cache::Cache(std::string argv0, const std::shared_ptr<IFilesystem> &fs) : fs(fs) {
if (!this->fs) {
this->fs = std::make_shared<Filesystem>(argv0);
}
this->_nodes = new std::vector<std::unique_ptr<ast::ASTNode>>();
typeCtx = std::make_shared<TypeContext>(this, ".root");
}
std::string Cache::getTemporaryVar(const std::string &prefix, char sigil) {
auto n = fmt::format("{}{}_{}", sigil ? fmt::format("{}_", sigil) : "", prefix,
++varCount);
return n;
}
std::string Cache::rev(const std::string &s) {
auto i = reverseIdentifierLookup.find(s);
if (i != reverseIdentifierLookup.end())
return i->second;
seqassertn(false, "'{}' has no non-canonical name", s);
return "";
}
SrcInfo Cache::generateSrcInfo() {
return {FILE_GENERATED, generatedSrcInfoCount, generatedSrcInfoCount++, 0};
}
std::string Cache::getContent(const SrcInfo &info) {
auto i = imports.find(info.file);
if (i == imports.end())
return "";
int line = info.line - 1;
if (line < 0 || line >= i->second.content.size())
return "";
auto s = i->second.content[line];
int col = info.col - 1;
if (col < 0 || col >= s.size())
return "";
int len = info.len;
return s.substr(col, len);
}
Cache::Class *Cache::getClass(const types::ClassType *type) {
auto name = type->name;
return in(classes, name);
}
std::string Cache::getMethod(types::ClassType *typ, const std::string &member) {
if (auto cls = getClass(typ)) {
if (auto t = in(cls->methods, member))
return *t;
}
seqassertn(false, "cannot find '{}' in '{}'", member, typ->name);
return "";
}
types::ClassType *Cache::findClass(const std::string &name) const {
auto f = typeCtx->find(name);
if (f && f->isType())
return f->getType()->getClass()->generics[0].getType()->getClass();
return nullptr;
}
types::FuncType *Cache::findFunction(const std::string &name) const {
auto f = typeCtx->find(name);
if (f && f->type && f->isFunc())
return f->type->getFunc();
f = typeCtx->find(name + ":0");
if (f && f->type && f->isFunc())
return f->type->getFunc();
return nullptr;
}
types::FuncType *Cache::findMethod(types::ClassType *typ, const std::string &member,
const std::vector<types::Type *> &args) const {
auto f = TypecheckVisitor(typeCtx).findBestMethod(typ, member, args);
return f;
}
ir::types::Type *Cache::realizeType(types::ClassType *type,
const std::vector<types::TypePtr> &generics) {
auto tv = TypecheckVisitor(typeCtx);
if (auto rtv = tv.realize(tv.instantiateType(type, castVectorPtr(generics)))) {
return classes[rtv->getClass()->name]
.realizations[rtv->getClass()->realizedName()]
->ir;
}
return nullptr;
}
ir::Func *Cache::realizeFunction(types::FuncType *type,
const std::vector<types::TypePtr> &args,
const std::vector<types::TypePtr> &generics,
types::ClassType *parentClass) {
auto tv = TypecheckVisitor(typeCtx);
auto t = tv.instantiateType(type, parentClass);
if (args.size() != t->size() + 1)
return nullptr;
types::Type::Unification undo;
if (t->getRetType()->unify(args[0].get(), &undo) < 0) {
undo.undo();
return nullptr;
}
for (int gi = 1; gi < args.size(); gi++) {
undo = types::Type::Unification();
if ((*t)[gi - 1]->unify(args[gi].get(), &undo) < 0) {
undo.undo();
return nullptr;
}
}
if (!generics.empty()) {
if (generics.size() != t->funcGenerics.size())
return nullptr;
for (int gi = 0; gi < generics.size(); gi++) {
undo = types::Type::Unification();
if (t->funcGenerics[gi].type->unify(generics[gi].get(), &undo) < 0) {
undo.undo();
return nullptr;
}
}
}
ir::Func *f = nullptr;
if (auto rtv = tv.realize(t.get())) {
auto pr = pendingRealizations; // copy it as it might be modified
for (const auto &key : pr | std::views::keys)
TranslateVisitor(codegenCtx).translateStmts(clone(functions[key].ast));
f = functions[rtv->getFunc()->ast->getName()].realizations[rtv->realizedName()]->ir;
}
return f;
}
ir::types::Type *Cache::makeTuple(const std::vector<types::TypePtr> &types) {
auto tv = TypecheckVisitor(typeCtx);
auto t = tv.instantiateType(tv.generateTuple(types.size()), castVectorPtr(types));
return realizeType(t->getClass(), types);
}
ir::types::Type *Cache::makeFunction(const std::vector<types::TypePtr> &types) {
auto tv = TypecheckVisitor(typeCtx);
seqassertn(!types.empty(), "types must have at least one argument");
std::vector<types::Type *> tt;
for (size_t i = 1; i < types.size(); i++)
tt.emplace_back(types[i].get());
const auto &ret = types[0];
auto argType = tv.instantiateType(tv.generateTuple(types.size() - 1), tt);
auto ft = realizeType(tv.getStdLibType("Function")->getClass(), {argType, ret});
return ft;
}
ir::types::Type *Cache::makeUnion(const std::vector<types::TypePtr> &types) {
auto tv = TypecheckVisitor(typeCtx);
auto argType =
tv.instantiateType(tv.generateTuple(types.size()), castVectorPtr(types));
return realizeType(tv.getStdLibType("Union")->getClass(), {argType});
}
size_t Cache::getRealizationId(types::ClassType *type) {
auto cv = TypecheckVisitor(typeCtx).getClassRealization(type);
return cv->id;
}
std::vector<size_t> Cache::getBaseRealizationIds(types::ClassType *type) {
auto r = TypecheckVisitor(typeCtx).getClassRealization(type);
std::vector<size_t> baseIds;
for (const auto &t : r->bases) {
baseIds.push_back(getRealizationId(t.get()));
}
return baseIds;
}
std::vector<size_t> Cache::getChildRealizationIds(types::ClassType *type) {
auto cv = TypecheckVisitor(typeCtx).getClassRealization(type);
auto parentId = cv->id;
std::vector<size_t> childIds;
for (const auto &[_, c] : classes) {
for (const auto &[_, r] : c.realizations) {
for (const auto &t : r->bases) {
if (getRealizationId(t.get()) == parentId) {
childIds.push_back(r->id);
break;
}
}
}
}
return childIds;
}
std::vector<ir::SeriesFlow *> Cache::parseCode(const std::string &code) {
auto nodeOrErr = ast::parseCode(this, "<internal>", code, /*startLine=*/0);
if (!nodeOrErr)
throw exc::ParserException(nodeOrErr.takeError());
auto sctx = imports[MAIN_IMPORT].ctx;
auto node = ast::TypecheckVisitor::apply(sctx, *nodeOrErr);
auto old = codegenCtx->series;
codegenCtx->series.clear();
ast::TranslateVisitor(codegenCtx).initializeGlobals();
ast::TranslateVisitor(codegenCtx).translateStmts(node);
std::swap(old, codegenCtx->series);
return old;
}
std::vector<std::shared_ptr<types::ClassType>>
Cache::mergeC3(std::vector<std::vector<types::TypePtr>> &seqs) {
// Reference: https://www.python.org/download/releases/2.3/mro/
std::vector<std::shared_ptr<types::ClassType>> result;
for (size_t i = 0;; i++) {
bool found = false;
std::shared_ptr<types::ClassType> cand = nullptr;
for (auto &seq : seqs) {
if (seq.empty())
continue;
found = true;
bool nothead = false;
for (auto &s : seqs)
if (!s.empty()) {
bool in = false;
for (size_t j = 1; j < s.size(); j++) {
if ((in |= (seq[0]->is(s[j]->getClass()->name))))
break;
}
if (in) {
nothead = true;
break;
}
}
if (!nothead) {
cand = std::dynamic_pointer_cast<types::ClassType>(seq[0]);
break;
}
}
if (!found)
return result;
if (!cand)
return {};
result.push_back(cand);
for (auto &s : seqs)
if (!s.empty() && cand->is(s[0]->getClass()->name)) {
s.erase(s.begin());
}
}
return result;
}
/**
* Generate Python bindings for Cython-like access.
*/
void Cache::populatePythonModule() {
using namespace ast;
const std::string CYTHON_ITER = "_PyWrap.IterWrap";
if (!pythonExt)
return;
if (!pyModule)
pyModule = std::make_shared<ir::PyModule>();
LOG_USER("[py] ====== module generation =======");
auto tv = TypecheckVisitor(typeCtx);
auto clss = classes; // needs copy as below fns can mutate this
for (const auto &cn : clss | std::views::keys) {
auto py = tv.cythonizeClass(cn);
if (!py.name.empty())
pyModule->types.push_back(py);
}
// Handle __iternext__ wrappers
for (const auto &cn : classes[CYTHON_ITER].realizations | std::views::keys) {
auto py = tv.cythonizeIterator(cn);
pyModule->types.push_back(py);
}
auto fns = functions; // needs copy as below fns can mutate this
for (const auto &fn : fns | std::views::keys) {
auto py = tv.cythonizeFunction(fn);
if (!py.name.empty())
pyModule->functions.push_back(py);
}
// Handle pending realizations!
auto pr = pendingRealizations; // copy it as it might be modified
for (const auto &key : pr | std::views::keys)
TranslateVisitor(codegenCtx).translateStmts(clone(functions[key].ast));
}
} // namespace codon::ast