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langcc.cpp
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langcc.cpp
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#include "langcc_common.hpp"
#include "langcc_rt.hpp"
namespace langcc {
LangCompileResult_T compile_lang_inner(
lang::meta::Node_T src, Int k, Gensym_T gen_meta, LexOutput_T lex_res,
string src_base_name, string dst_path, HeaderMode hm) {
AR_ge(k, 0);
auto L = src->as_Lang();
LangCompileContext ctx(L, gen_meta, lex_res, src_base_name, dst_path, k);
LOG(1, "Performing initial validation and tabulation");
lang_init_validate(ctx);
for (auto path : *ctx.includes_) {
ctx.cc_.dst_decls_->push_back(ctx.cc_.Q_->qq_ext(Some<string>("Decl"),
fmt_str("#include \"{}\"", path))->as_Decl());
}
lang_emit_preambles(ctx);
LOG(1, "Compiling lexer");
if (!ctx.parser_allow_unreach_) {
auto unreach_err = lexer_check_all_reach(ctx);
if (unreach_err.is_some()) {
return unreach_err.as_some();
}
}
auto lexer_mode_dfas = lexer_compile_dfas(ctx);
lexer_gen_cpp_defs(ctx, ctx.cc_, src_base_name, lexer_mode_dfas, hm);
LOG(1, "Compiling parser: tabulating symbols");
parser_tabulate_syms_top(ctx);
LOG(1, "Compiling parser: inferring attributes");
parser_infer_attrs_top(ctx);
LOG(2, " === Constrs by rule:\n{}\n\n", ctx.parser_attr_constr_by_rule_);
LOG(3, " === Top-level attr domains:\n{}\n\n", ctx.parser_attr_domains_);
parser_flatten_grammar_rules(ctx);
LOG(2, " === Flattened grammar:\n\n{}\n\n", ctx.Gr_flat_);
LOG(4, " === wr_map={}\n\ndt_map={}\n\nparent_map={}\n\nrd_map={}\n\n",
ctx.gen_wr_map_, ctx.gen_dt_map_, ctx.gen_dt_parent_mapping_, ctx.gen_rd_map_);
if (!ctx.parser_allow_unreach_) {
auto unreach_err = parser_check_all_reach(ctx);
if (unreach_err.is_some()) {
return unreach_err.as_some();
}
}
auto lr_conflicts = parser_lr_analysis(ctx);
if (lr_conflicts->length() > 0) {
auto res = LangCompileResult::Error::LRConf::make(lr_conflicts);
return res;
}
LOG(1, "Generating AST datatype definitions");
lang_emit_datatype_defs(ctx, hm);
LOG(1, "Generating AST writer definitions");
lang_emit_writer_defs(ctx, hm);
LOG(1, "Generating AST parser definitions");
lang_emit_parser_defs(ctx, hm);
for (auto path : *ctx.includes_post_) {
ctx.cc_.dst_decls_->push_back(ctx.cc_.Q_->qq_ext(Some<string>("Decl"),
fmt_str("#include \"{}\"", path))->as_Decl());
}
LOG(1, "Generating global definitions");
lang_emit_global_defs(ctx, hm);
lang_emit_test_defs(ctx);
lang_emit_debug_defs(ctx);
lang_emit_extract_final(ctx, hm);
return LangCompileResult::Ok::make(
ctx.hpp_path_, ctx.cpp_path_, ctx.cpp_test_path_, ctx.cpp_debug_path_);
}
LangCompileResult_T compile_lang(
lang::meta::Node_T src, Int k, Gensym_T gen_meta, LexOutput_T lex_res,
string src_base_name, string dst_path, HeaderMode hm) {
try {
return compile_lang_inner(src, k, gen_meta, lex_res, src_base_name, dst_path, hm);
} catch (const LangCompileResult::Error_T& res) {
return res;
}
}
tuple<meta::Node::Lang_T, Gensym_T, LexOutput_T> load_lang_path(string src_path) {
auto src_str = read_file_shared(src_path);
auto gen_meta = make_rc<Gensym>();
auto L_meta = lang::meta::init();
auto parse = L_meta->parse(src_str, gen_meta);
if (!parse->is_success()) {
LG_ERR("{}", parse->err_.as_some());
AX();
}
auto src = parse->res_.as_some()->as_Lang();
return make_tuple(src, gen_meta, parse->lex_);
}
string lang_get_src_base_name(string src_path) {
auto src_comps = str_split(src_path, "/");
auto src_base_comps = str_split(src_comps.at(src_comps.size() - 1), ".");
if (src_base_comps.size() != 2 || src_base_comps[1] != "lang") {
LG_ERR("Incorrect format for source filename");
AX();
}
auto src_base_name = src_base_comps[0];
return src_base_name;
}
LangCompileResult_T compile_lang_path(
string src_path, string dst_path, Option_T<Int> k, HeaderMode hm) {
auto src_base_name = lang_get_src_base_name(src_path);
auto [src, gen_meta, lex_res] = load_lang_path(src_path);
auto kr = lang_get_k_default(src);
if (k.is_some()) {
kr = k.as_some();
}
return compile_lang(src, kr, gen_meta, lex_res, src_base_name, dst_path, hm);
}
LangCompileResult_T compile_lang_full(
string src_path, string dst_path, RunTests run_tests, HeaderMode hm,
Vec_T<string> extra_includes) {
makedirs(dst_path);
auto [src, _, __] = load_lang_path(src_path);
auto compile_tests = lang_get_compile_test_stanza(src);
if (compile_tests.is_some()) {
for (auto test : *compile_tests.as_some()->items_) {
auto test_k = string_to_int(test->k_.to_std_string()).as_some();
auto test_res = compile_lang_path(src_path, dst_path, Some<Int>(test_k), hm);
if (test_res->is_Ok()) {
if (test->neg_) {
LG_ERR("Unexpected compilation success: k={}", test_k);
AX();
}
} else if (test_res->is_Error()) {
if (!test->neg_) {
LG_ERR("Lang compile error:\n{}\n\n", test_res->as_Error());
AX();
}
} else {
AX();
}
}
}
auto res = compile_lang_path(src_path, dst_path, None<Int>(), hm);
if (res->is_Error()) {
return res;
}
if (run_tests == RunTests::Y) {
makedirs("build/gen_test_bin");
#ifdef __APPLE__
string sdkroot = STRINGIFY(__MACOS_SDKROOT__);
setenv("SDKROOT", sdkroot.c_str(), 1);
#endif
Vec<string> cmds;
string cc = STRINGIFY(__CC__);
cmds.push(cc);
#ifndef __APPLE__
cmds.push("-Wno-attributes");
#endif
#ifdef __APPLE__
cmds.push("-D");
cmds.push(fmt_str("__MACOS_SDKROOT__={}", sdkroot));
cmds.push("-isystem");
cmds.push("/usr/local/include");
#endif
cmds.push("-o");
auto tgt_path = fmt_str("build/gen_test_bin/{}__gen_test",
lang_get_src_base_name(src_path));
cmds.push(tgt_path);
cmds.push("-g");
cmds.push("-ggdb");
cmds.push("-g3");
cmds.push("-std=c++17");
cmds.push("-fno-omit-frame-pointer");
#ifdef __APPLE__
cmds.push("-mmacosx-version-min=12.0");
#endif
cmds.push("-I");
cmds.push(fmt_str("./{}", dst_path));
cmds.push("-I");
cmds.push(".");
cmds.push("-I");
cmds.push("./src");
for (auto x : *extra_includes) {
cmds.push("-isystem");
cmds.push(x);
}
if (hm == HeaderMode::N) {
cmds.push(res->as_Ok()->cpp_path_);
}
cmds.push(res->as_Ok()->cpp_test_path_);
#ifndef __APPLE__
cmds.push("-lunwind");
#endif
cmds.push("-ldl");
string cmd;
for (auto cmd_i : cmds) {
cmd += cmd_i + " ";
}
LOG(1, "Running: {}", cmd);
{
auto rc = system(cmd.c_str());
if (rc != 0) {
LG_ERR("Failure: {}", cmd);
AX();
}
}
LOG(1, "Running: {}", tgt_path);
{
auto rc = system(tgt_path.c_str());
if (rc != 0) {
LG_ERR("Failure: {}", tgt_path);
AX();
}
}
}
return res;
}
bool test_lang(string test_name) {
string src_path = fmt_str("grammars/test/{}.lang", test_name);
string dst_path = "build/gen_test_src";
auto [src, _, __] = load_lang_path(src_path);
auto stat = compile_lang_full(
src_path, dst_path, RunTests::Y, HeaderMode::N, make_rc<Vec<string>>());
if (stat->is_Error() && !lang_is_expected_fail(src)) {
LG_ERR("Error:\n\n{}\n\n", stat->as_Error());
return false;
} else if (stat->is_Ok() && lang_is_expected_fail(src)) {
LG_ERR("Unexpected compilation success");
return false;
} else if (stat->is_Error() && lang_is_expected_fail(src)) {
LOG(1, "Error (expected error):\n\n{}\n\n", stat->as_Error());
return true;
}
return true;
}
void test_lang_toplevel(string test_name) {
bool ok = test_lang(test_name);
if (!ok) {
AX();
}
}
}