feat(ast): 将AST上下文重构为模块并添加字符串池支持
- 将scc_ast_ctx重命名为scc_ast_module以更好地反映其功能 - 添加scc_strpool_t用于统一管理AST节点名称字符串的生命周期 - 实现scc_ast_module_intern函数用于字符串驻留 - 更新所有相关的初始化、销毁和访问函数命名 - 修改内存分配宏以使用新的模块结构 refactor(parser): 更新解析器以使用AST模块和字符串池 - 将解析器中的ast_ctx字段替换为ast_module - 在创建AST节点时使用新的ast_module参数 - 使用scc_ast_module_intern函数处理标识符和字符串字面量 - 确保所有字符串都被正确驻留到模块的字符串池中 refactor(sema): 更新语义分析器使用AST模块 - 将sema_ctx中的ast_ctx字段替换为ast_module - 更新语义分析器初始化函数参数 refactor(ast2ir): 更新AST到IR转换器使用AST模块 - 将ast_ctx字段替换为ast_module - 更新上下文初始化函数参数和实现 fix(cfg): 修复CFG模块中的符号查找错误 - 修正scc_cfg_module_unsafe_get_symbol函数中的边界检查条件 perf(ir): 完善各IR层模块的内存清理机制 - 为HIR模块添加函数和基本块元数据的释放逻辑 - 为MIR和LIR模块完善完整的资源清理和内存释放 - 确保所有分配的元数据结构都能被正确释放 chore(deps): 添加scc_utils依赖到AST库 - 在libs/ast/cbuild.toml中添加对scc_utils的依赖
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@@ -6,6 +6,7 @@
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typedef struct {
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scc_hashtable_t str2libsym;
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scc_pe_idata_lib_vec_t idata_libs;
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scc_strpool_t pool; /* owns all interned symbol names and library names */
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const char *find_path;
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} pe_idata_lib_ctx_t;
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@@ -24,11 +25,18 @@ static void load_from_def(pe_idata_lib_ctx_t *ctx, const char *file_path,
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const char *fname = scc_str_as_cstr(&fpath);
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scc_file_t fp = scc_fopen(fname, SCC_FILE_READ);
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if (fp == nullptr) {
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scc_str_drop(&fpath);
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return;
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}
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LOG_TRACE("load_from_def file read sucessful: %s", fname);
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usize fsize = scc_fsize(fp);
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if (fsize == 0) {
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scc_fclose(fp);
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scc_str_drop(&fpath);
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return;
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}
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char *buffer = scc_malloc(fsize);
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Assert(buffer != nullptr);
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@@ -36,10 +44,9 @@ static void load_from_def(pe_idata_lib_ctx_t *ctx, const char *file_path,
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Assert(read_size == fsize);
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scc_fclose(fp);
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// scc_pe_name_vec_t symbol_names;
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usize line = 0;
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// FIXME
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buffer[fsize - 1] = '\0';
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const char *dll_pooled = scc_strpool_intern(&ctx->pool, dll_name);
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for (usize i = 0; i < fsize; i += 1) {
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if (buffer[i] == '\n') {
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line += 1;
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@@ -56,15 +63,18 @@ static void load_from_def(pe_idata_lib_ctx_t *ctx, const char *file_path,
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break;
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}
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}
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// FIXME memory leak
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scc_hashtable_set(&ctx->str2libsym, buffer + i, (void *)dll_name);
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const char *sym_pooled = scc_strpool_intern(&ctx->pool, buffer + i);
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scc_hashtable_set(&ctx->str2libsym, sym_pooled, (void *)dll_pooled);
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}
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scc_free(buffer);
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scc_str_drop(&fpath);
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}
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static void pe_idata_lib_init(pe_idata_lib_ctx_t *ctx, const char *find_path) {
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// Got .dll.def
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scc_hashtable_cstr_init(&ctx->str2libsym);
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scc_strpool_init(&ctx->pool);
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scc_vec_init(ctx->idata_libs);
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ctx->find_path = find_path;
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load_from_def(ctx, ctx->find_path, "msvcrt.dll");
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@@ -249,4 +259,12 @@ void sccf2pe(scc_pe_builder_t *builder, const sccf_t *sccf) {
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scc_pe_write_section(builder, &idata_range,
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scc_vec_unsafe_get_data(idata_buffer),
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scc_vec_size(idata_buffer));
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// Cleanup
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scc_vec_foreach(idata_lib_ctx.idata_libs, i) {
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scc_vec_free(scc_vec_at(idata_lib_ctx.idata_libs, i).symbol_names);
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}
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scc_vec_free(idata_lib_ctx.idata_libs);
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scc_hashtable_drop(&idata_lib_ctx.str2libsym);
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scc_strpool_drop(&idata_lib_ctx.pool);
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}
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