597 lines
25 KiB
Python
597 lines
25 KiB
Python
import t, c
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from stdint import *
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import ast
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import memhub
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import string
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import stdlib
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import viperlib
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import stdio
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import lib.core.Handles.HandlesBase as HandlesBase
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import lib.core.Handles.HandlesTranslator as HT
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import lib.core.Handles.HandlesStruct as HandlesStruct
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# ============================================================
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# HandlesImports - 导入语句处理（Mixin 继承模式）
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#
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# 管理 _imported_modules 和 _from_imports 字符串
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# 注意：str = bytes = t.CChar | t.CPtr = i8*
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# ============================================================
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# ============================================================
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# 模块级工具函数（保留供外部调用）
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# ============================================================
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# ============================================================
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# 添加已导入模块名
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# ============================================================
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def add_imported_module(pool: memhub.MemBuddy | t.CPtr,
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imported_modules: str,
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name: str) -> str:
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"""记录已导入的模块名，返回新的 imported_modules 字符串指针"""
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if name is None:
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return imported_modules
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if imported_modules is None:
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nlen: t.CSizeT = string.strlen(name)
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buf: t.CChar | t.CPtr = pool.alloc(nlen + 1)
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if buf is not None:
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string.strcpy(buf, name)
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return buf
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return None
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else:
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old_len: t.CSizeT = string.strlen(imported_modules)
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name_len: t.CSizeT = string.strlen(name)
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new_len: t.CSizeT = old_len + 1 + name_len
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buf2: t.CChar | t.CPtr = pool.alloc(new_len + 1)
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if buf2 is not None:
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string.strcpy(buf2, imported_modules)
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buf2[old_len] = ' '
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string.strcpy(buf2 + old_len + 1, name)
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return buf2
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return imported_modules
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# ============================================================
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# 检查模块是否已导入
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# ============================================================
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def is_module_imported(imported_modules: str, name: str) -> int:
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"""检查模块是否已导入（词边界精确匹配，避免子串误匹配）"""
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if name is None or imported_modules is None:
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return 0
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name_len: t.CSizeT = string.strlen(name)
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cur: t.CChar | t.CPtr = imported_modules
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total_len: t.CSizeT = string.strlen(imported_modules)
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ci: t.CSizeT = 0
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while ci < total_len:
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while ci < total_len and cur[ci] == ' ':
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ci += 1
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if ci >= total_len:
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break
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word_start: t.CSizeT = ci
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while ci < total_len and cur[ci] != ' ':
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ci += 1
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word_len: t.CSizeT = ci - word_start
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if word_len == name_len:
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match: int = 1
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for ei in range(name_len):
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if cur[word_start + ei] != name[ei]:
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match = 0
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break
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if match == 1:
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return 1
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return 0
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# ============================================================
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# 添加 from-import 名称映射
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# ============================================================
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def add_from_import(pool: memhub.MemBuddy | t.CPtr,
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from_imports: str,
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local_name: str,
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module_name: str,
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original_name: str = None) -> str:
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"""添加 from-import 映射，返回新的 from_imports 字符串
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格式:
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无别名: "local_name:module_name"
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有别名: "local_name:module_name:original_name"
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（original_name 为源模块中的真实函数名，用于跨模块 SHA1 修饰）
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"""
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if local_name is None or module_name is None:
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return from_imports
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entry: t.CChar | t.CPtr = pool.alloc(256)
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if entry is None:
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return from_imports
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if original_name is not None and original_name != local_name:
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viperlib.snprintf(entry, 256, "%s:%s:%s", local_name, module_name, original_name)
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else:
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viperlib.snprintf(entry, 256, "%s:%s", local_name, module_name)
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if from_imports is None:
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return entry
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else:
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old_len: t.CSizeT = string.strlen(from_imports)
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entry_len: t.CSizeT = string.strlen(entry)
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new_len: t.CSizeT = old_len + 1 + entry_len
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buf: t.CChar | t.CPtr = pool.alloc(new_len + 1)
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if buf is not None:
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string.strcpy(buf, from_imports)
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buf[old_len] = ' '
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string.strcpy(buf + old_len + 1, entry)
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return buf
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return from_imports
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# ============================================================
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# 查找 from-import 名称 → 返回原始函数名（别名场景）
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#
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# 对于 from X import Y as Z，返回 Y（源模块中的真实函数名）。
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# 无别名时返回 None（local_name 即为原始名）。
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# ============================================================
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def lookup_from_import_original(from_imports: str,
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local_name: str) -> str:
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"""查找 from-import 别名对应的原始函数名，返回 None=无别名或未找到"""
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if local_name is None or from_imports is None:
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return None
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name_len: t.CSizeT = string.strlen(local_name)
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cur: t.CChar | t.CPtr = from_imports
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ci: t.CSizeT = 0
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total_len: t.CSizeT = string.strlen(from_imports)
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while ci < total_len:
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# 跳过前导空格
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while ci < total_len and cur[ci] == ' ':
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ci += 1
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if ci >= total_len:
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break
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# 找到第一个 ':' 的位置
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colon1: t.CSizeT = ci
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while colon1 < total_len and cur[colon1] != ':' and cur[colon1] != ' ':
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colon1 += 1
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if colon1 >= total_len or cur[colon1] != ':':
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break
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entry_name_len: t.CSizeT = colon1 - ci
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# 跳过 star import
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if entry_name_len == 1 and cur[ci] == '*':
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ci = colon1
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while ci < total_len and cur[ci] != ' ':
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ci += 1
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continue
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# 比较名称
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if entry_name_len == name_len:
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match: int = 1
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ei: t.CSizeT = 0
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while ei < name_len:
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if cur[ci + ei] != local_name[ei]:
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match = 0
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break
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ei += 1
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if match == 1:
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# 找到匹配，检查是否有第三个字段（原始名）
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pos: t.CSizeT = colon1 + 1
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# 跳过模块名
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while pos < total_len and cur[pos] != ':' and cur[pos] != ' ' and cur[pos] != '\0':
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pos += 1
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if pos < total_len and cur[pos] == ':':
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# 有第三个字段: original_name
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orig_start: t.CSizeT = pos + 1
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orig_end: t.CSizeT = orig_start
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while orig_end < total_len and cur[orig_end] != ' ' and cur[orig_end] != '\0':
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orig_end += 1
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orig_len: t.CSizeT = orig_end - orig_start
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if orig_len > 0:
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orig_buf: str = cur + orig_start
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# 返回指向内部的指针（调用方需在使用期内保持 from_imports 有效）
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return orig_buf
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return None
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return None
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# 跳到下一个条目
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ci = colon1
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while ci < total_len and cur[ci] != ' ':
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ci += 1
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return None
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# ============================================================
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# 查找 from-import 名称 → 返回模块名或 None
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#
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# allow_star_fallback: 是否允许 star import 回退（默认 1=允许）。
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# 当查询明确模块名（如 "BuildPipeline"）时，应传 0 禁用回退，
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# 避免被 star import 模块名误导（如 from stdint import * 后
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# 查询 "BuildPipeline" 错误回退到 "stdint"）。
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# ============================================================
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def lookup_from_import(from_imports: str, name: str,
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allow_star_fallback: int = 1) -> str:
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"""查找 from-import 名称，返回模块名或 None
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支持 star import: 如果 from_imports 中有 "*:module" 条目，
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且未找到精确名称匹配，且 allow_star_fallback != 0，则返回 star import 的模块名。
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"""
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if name is None or from_imports is None:
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return None
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name_len: t.CSizeT = string.strlen(name)
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cur: t.CChar | t.CPtr = from_imports
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ci: t.CSizeT = 0
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total_len: t.CSizeT = string.strlen(from_imports)
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star_mod: str = None
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while ci < total_len:
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# 跳过前导空格
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while ci < total_len and cur[ci] == ' ':
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ci += 1
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if ci >= total_len:
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break
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# 找到 ':' 的位置
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colon_pos: t.CSizeT = ci
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while colon_pos < total_len and cur[colon_pos] != ':' and cur[colon_pos] != ' ':
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colon_pos += 1
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if colon_pos >= total_len or cur[colon_pos] != ':':
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break
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entry_name_len: t.CSizeT = colon_pos - ci
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# 检测 star import ("*:module")
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if entry_name_len == 1 and cur[ci] == '*':
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mod_start: t.CSizeT = colon_pos + 1
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mod_end: t.CSizeT = mod_start
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while mod_end < total_len and cur[mod_end] != ' ' and cur[mod_end] != '\0' and cur[mod_end] != ':':
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mod_end += 1
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star_mod = cur + mod_start
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# 比较名称
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elif entry_name_len == name_len:
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match: int = 1
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ei: t.CSizeT = 0
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while ei < name_len:
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if cur[ci + ei] != name[ei]:
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match = 0
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break
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ei += 1
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if match == 1:
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mod_start2: t.CSizeT = colon_pos + 1
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mod_end2: t.CSizeT = mod_start2
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# 模块名结束于: 空格、null、或第二个':'（别名格式的分隔符）
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while mod_end2 < total_len and cur[mod_end2] != ' ' and cur[mod_end2] != '\0' and cur[mod_end2] != ':':
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mod_end2 += 1
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return cur + mod_start2
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# 跳到下一个条目
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ci = colon_pos
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while ci < total_len and cur[ci] != ' ':
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ci += 1
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# 未找到精确匹配，仅在允许时回退到 star import
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if allow_star_fallback == 0:
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return None
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return star_mod
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# ============================================================
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# 全局 re-export 映射表（module_sha1 + func_name → source_module）
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#
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# 当 ast/__init__.py 中有 from .lexer import _lexer_init 时，
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# _lexer_init 被 re-export 为 ast._lexer_init。
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# 跨模块调用 ast._lexer_init(...) 需使用 ast.lexer 的 SHA1 混淆，
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# 而非 ast 的 SHA1。
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#
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# 数据布局：
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# _g_reexport_sha1s: 每条 17 字节（SHA1 16字符 + null）
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# _g_reexport_funcs: 每条 64 字节（函数名 + null）
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# _g_reexport_srcs: 每条 64 字节（源模块名 + null）
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# ============================================================
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MAX_REEXPORT: t.CDefine = 512
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_g_reexport_sha1s: bytes = None
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_g_reexport_funcs: bytes = None
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_g_reexport_srcs: bytes = None
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_g_reexport_count: int = 0
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# ============================================================
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# register_reexport - 注册 re-export 映射
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#
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# 在 HandleImportFromNames 中调用：当处理 from .X import Y 时，
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# 记录当前模块（通过 ModuleSha1）re-export 了函数 Y，源模块为 X。
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#
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# 幂等：重复注册相同映射不会增加条目。
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# 内存用 stdlib.malloc 分配（全局存储器，跨 Phase 持久化）。
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# ============================================================
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def register_reexport(mod_sha1: str, func_name: str, source_module: str) -> int:
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"""注册 re-export 映射（幂等），返回 0 成功，-1 失败"""
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global _g_reexport_sha1s, _g_reexport_funcs, _g_reexport_srcs, _g_reexport_count
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if mod_sha1 is None or func_name is None or source_module is None:
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return -1
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# 懒初始化
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if _g_reexport_sha1s is None:
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_g_reexport_sha1s = stdlib.malloc(MAX_REEXPORT * 17)
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_g_reexport_funcs = stdlib.malloc(MAX_REEXPORT * 64)
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_g_reexport_srcs = stdlib.malloc(MAX_REEXPORT * 64)
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if _g_reexport_sha1s is None or _g_reexport_funcs is None or _g_reexport_srcs is None:
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return -1
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string.memset(_g_reexport_sha1s, 0, MAX_REEXPORT * 17)
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string.memset(_g_reexport_funcs, 0, MAX_REEXPORT * 64)
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string.memset(_g_reexport_srcs, 0, MAX_REEXPORT * 64)
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if _g_reexport_count >= MAX_REEXPORT:
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return -1
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# 幂等检查：查找是否已存在相同映射
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for i in range(_g_reexport_count):
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sidx: t.CSizeT = t.CSizeT(i) * 17
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fidx: t.CSizeT = t.CSizeT(i) * 64
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if string.strcmp(_g_reexport_sha1s + sidx, mod_sha1) == 0:
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if string.strcmp(_g_reexport_funcs + fidx, func_name) == 0:
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# 已存在，更新 source_module（以防变化）
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string.strcpy(_g_reexport_srcs + fidx, source_module)
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return 0
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# 添加新条目
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idx2: t.CSizeT = t.CSizeT(_g_reexport_count) * 17
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fidx2: t.CSizeT = t.CSizeT(_g_reexport_count) * 64
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string.strcpy(_g_reexport_sha1s + idx2, mod_sha1)
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string.strcpy(_g_reexport_funcs + fidx2, func_name)
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string.strcpy(_g_reexport_srcs + fidx2, source_module)
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_g_reexport_count += 1
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return 0
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# ============================================================
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# lookup_reexport - 查找 re-export 映射
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#
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# 给定模块 SHA1 和函数名，返回源模块名（如 "ast.lexer"）或 None。
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# 调用方通过 _lookup_module_sha1(source_module) 获取源模块的 SHA1。
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# ============================================================
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def lookup_reexport(mod_sha1: str, func_name: str) -> str:
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"""查找 re-export 映射，返回源模块名或 None"""
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if mod_sha1 is None or func_name is None:
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return None
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if _g_reexport_sha1s is None or _g_reexport_count <= 0:
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return None
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for i in range(_g_reexport_count):
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sidx: t.CSizeT = t.CSizeT(i) * 17
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fidx: t.CSizeT = t.CSizeT(i) * 64
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if string.strcmp(_g_reexport_sha1s + sidx, mod_sha1) == 0:
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if string.strcmp(_g_reexport_funcs + fidx, func_name) == 0:
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return _g_reexport_srcs + fidx
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return None
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# ============================================================
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# _resolve_relative_module - 解析相对导入为完整模块名
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#
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# 对于 from .X import Y（level=1, module="X"）在包 pkg 中：
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# 解析为 "pkg.X"
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# 对于 from . import Y（level=1, module=None）在包 pkg 中：
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# 解析为 "pkg"
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# 对于 from ..X import Y（level=2, module="X"）在包 pkg.sub 中：
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# 解析为 "pkg.X"（先从 pkg.sub 上溯一级到 pkg，再追加 .X）
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#
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# Args:
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# pool: 内存池
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# current_package: 当前文件所属包名（如 "llvmlite"），None 表示无包
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# level: 相对导入级别（0=绝对，1=., 2=..）
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# module: ImportFrom 的 module 字段（可能为 None）
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#
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# Returns:
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# 解析后的完整模块名；绝对导入（level<=0）直接返回 module；
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# 无法解析时返回 module（回退到原始值）
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# ============================================================
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def _resolve_relative_module(pool: memhub.MemBuddy | t.CPtr,
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current_package: str,
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level: t.CInt,
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module: str) -> str:
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"""解析相对导入为完整模块名"""
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if level <= 0:
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return module
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if current_package is None:
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return module
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# 从 current_package 开始，上溯 (level-1) 级
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pkg: str = current_package
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up: t.CInt = level - 1
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while up > 0:
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pkg_len: t.CSizeT = string.strlen(pkg)
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last_dot: t.CSizeT = 0
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found: int = 0
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i: t.CSizeT = 0
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while i < pkg_len:
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if pkg[i] == '.':
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last_dot = i
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found = 1
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i += 1
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if found == 0:
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# 无更多父级，包变为空
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pkg = None
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break
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# 截断到最后一个 '.' 处
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new_pkg: str = pool.alloc(last_dot + 1)
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if new_pkg is None:
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return module
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string.strncpy(new_pkg, pkg, last_dot)
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new_pkg[last_dot] = '\0'
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pkg = new_pkg
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up -= 1
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if module is None:
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# from . import Y → 模块就是包本身
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return pkg
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if pkg is None:
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# 包已上溯到空，直接用 module
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return module
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# 拼接 pkg + "." + module
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pkg_len2: t.CSizeT = string.strlen(pkg)
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mod_len: t.CSizeT = string.strlen(module)
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buf: str = pool.alloc(pkg_len2 + 1 + mod_len + 1)
|
||
if buf is None:
|
||
return module
|
||
string.strcpy(buf, pkg)
|
||
buf[pkg_len2] = '.'
|
||
string.strcpy(buf + pkg_len2 + 1, module)
|
||
return buf
|
||
|
||
|
||
# ============================================================
|
||
# compute_package_from_relpath - 从相对路径计算包名
|
||
#
|
||
# 包名 = 文件所在目录路径，将 / 和 \ 替换为 .
|
||
# 对于顶级文件（无目录分隔符），返回 None
|
||
#
|
||
# 示例：
|
||
# "llvmlite/__init__.py" → "llvmlite"
|
||
# "llvmlite/__types.py" → "llvmlite"
|
||
# "ast/parser.py" → "ast"
|
||
# "ast.py" → None（顶级文件）
|
||
# ============================================================
|
||
def compute_package_from_relpath(pool: memhub.MemBuddy | t.CPtr,
|
||
rel_path: str) -> str:
|
||
"""从相对路径计算包名（目录部分，分隔符替换为 .）"""
|
||
if rel_path is None:
|
||
return None
|
||
rlen: t.CSizeT = string.strlen(rel_path)
|
||
# 找最后一个 / 或 \
|
||
last_sep: t.CSizeT = 0
|
||
found: int = 0
|
||
i: t.CSizeT = 0
|
||
while i < rlen:
|
||
ch: t.CChar = rel_path[i]
|
||
if ch == '/' or ch == '\\':
|
||
last_sep = i
|
||
found = 1
|
||
i += 1
|
||
if found == 0:
|
||
# 无目录分隔符 → 顶级文件，无包
|
||
return None
|
||
# 复制目录部分，将 / 和 \ 替换为 .
|
||
dir_len: t.CSizeT = last_sep
|
||
buf: str = pool.alloc(dir_len + 1)
|
||
if buf is None:
|
||
return None
|
||
j: t.CSizeT = 0
|
||
while j < dir_len:
|
||
ch2: t.CChar = rel_path[j]
|
||
if ch2 == '/' or ch2 == '\\':
|
||
buf[j] = '.'
|
||
else:
|
||
buf[j] = ch2
|
||
j += 1
|
||
buf[dir_len] = '\0'
|
||
return buf
|
||
|
||
|
||
# ============================================================
|
||
# ImportsHandle - 导入语句处理器（Mixin 继承模式）
|
||
#
|
||
# 方法版本：直接更新 trans._imported_modules / trans._from_imports
|
||
# ============================================================
|
||
@t.NoVTable
|
||
class ImportsHandle(HandlesBase.Mixin):
|
||
"""导入语句处理器：继承 Mixin 获得 Trans 回指针"""
|
||
|
||
def __init__(self, trans: HT.Translator | t.CPtr):
|
||
self.Trans = trans
|
||
|
||
# ============================================================
|
||
# HandleImport - 处理 import 语句，更新 trans._imported_modules
|
||
# ============================================================
|
||
def HandleImport(self, node: ast.AST | t.CPtr) -> int:
|
||
"""处理 import 语句，返回 0"""
|
||
imp: ast.Import | t.CPtr = (ast.Import | t.CPtr)(node)
|
||
if imp is None:
|
||
return 0
|
||
names: list[ast.AST | t.CPtr] | t.CPtr = imp.names
|
||
if names is None:
|
||
return 0
|
||
nn: t.CSizeT = names.__len__()
|
||
for ni in range(nn):
|
||
alias: ast.Alias | t.CPtr = (ast.Alias | t.CPtr)(names.get(ni))
|
||
if alias is not None and alias.name is not None:
|
||
pool_val: memhub.MemBuddy | t.CPtr = self.Trans.Pool
|
||
im_val: str = self.Trans._imported_modules
|
||
self.Trans._imported_modules = add_imported_module(
|
||
pool_val, im_val, alias.name)
|
||
# 别名也加入导入模块列表（用于模块限定构造器检查 Module.Class()）
|
||
if alias.asname is not None:
|
||
self.Trans._imported_modules = add_imported_module(
|
||
pool_val, self.Trans._imported_modules, alias.asname)
|
||
# 别名也加入 from_imports（asname:fullname），
|
||
# 使 HT.func() 跨模块调用能通过 from_imports 查找别名→完整模块名→SHA1
|
||
# 否则 _lookup_module_sha1("HT") 找不到（mod_arr 只存文件名 HandlesTranslator）
|
||
self.Trans._from_imports = add_from_import(
|
||
pool_val, self.Trans._from_imports, alias.asname, alias.name)
|
||
else:
|
||
# 无别名时（import a.b.c），将顶层包名 "a" 也加入 _imported_modules，
|
||
# 使 a.b.c 作为属性访问的 base 被翻译时能通过 is_module_imported("a") 检查
|
||
dot_ptr: str = string.strstr(alias.name, '.')
|
||
if dot_ptr is not None:
|
||
pkg_len: t.CSizeT = t.CSizeT(t.CUInt64T(dot_ptr) - t.CUInt64T(alias.name))
|
||
if pkg_len > 0 and pkg_len < 256:
|
||
pkg_buf: bytes = pool_val.alloc(pkg_len + 1)
|
||
if pkg_buf is not None:
|
||
string.strncpy(pkg_buf, alias.name, pkg_len)
|
||
pkg_buf[pkg_len] = '\0'
|
||
self.Trans._imported_modules = add_imported_module(
|
||
pool_val, self.Trans._imported_modules, pkg_buf)
|
||
return 0
|
||
|
||
# ============================================================
|
||
# HandleImportFromModule - 处理 from X import Y 的模块部分
|
||
#
|
||
# 对相对导入（level > 0），使用 trans.CurrentPackage 解析为
|
||
# 完整模块名（如 __types → llvmlite.__types），确保 .deps.txt
|
||
# 记录的模块名与 SHA1 映射表一致。
|
||
# ============================================================
|
||
def HandleImportFromModule(self, node: ast.AST | t.CPtr) -> int:
|
||
"""处理 from X import Y 的模块部分，更新 trans._imported_modules"""
|
||
impf: ast.ImportFrom | t.CPtr = (ast.ImportFrom | t.CPtr)(node)
|
||
if impf is None:
|
||
return 0
|
||
# 解析模块名：相对导入需补充包前缀
|
||
resolved: str = _resolve_relative_module(
|
||
self.Trans.Pool, self.Trans.CurrentPackage,
|
||
impf.level, impf.module)
|
||
if resolved is not None:
|
||
self.Trans._imported_modules = add_imported_module(
|
||
self.Trans.Pool, self.Trans._imported_modules, resolved)
|
||
return 0
|
||
|
||
# ============================================================
|
||
# HandleImportFromNames - 处理 from X import Y 的名称部分
|
||
#
|
||
# 同样使用解析后的完整模块名，确保 from-import 映射
|
||
# （如 LLVMType:llvmlite.__types）能正确查到 SHA1。
|
||
# ============================================================
|
||
def HandleImportFromNames(self, node: ast.AST | t.CPtr) -> int:
|
||
"""处理 from X import Y 的名称部分，更新 trans._from_imports"""
|
||
impf: ast.ImportFrom | t.CPtr = (ast.ImportFrom | t.CPtr)(node)
|
||
if impf is None:
|
||
return 0
|
||
# 解析模块名：相对导入需补充包前缀
|
||
resolved: str = _resolve_relative_module(
|
||
self.Trans.Pool, self.Trans.CurrentPackage,
|
||
impf.level, impf.module)
|
||
if resolved is not None:
|
||
names: list[ast.AST | t.CPtr] | t.CPtr = impf.names
|
||
if names is not None:
|
||
nn: t.CSizeT = names.__len__()
|
||
for ni in range(nn):
|
||
alias: ast.Alias | t.CPtr = (ast.Alias | t.CPtr)(names.get(ni))
|
||
if alias is not None and alias.name is not None:
|
||
local_name: str = alias.name
|
||
orig_name: str = None
|
||
if alias.asname is not None:
|
||
local_name = alias.asname
|
||
orig_name = alias.name
|
||
self.Trans._from_imports = add_from_import(
|
||
self.Trans.Pool, self.Trans._from_imports,
|
||
local_name, resolved, orig_name)
|
||
# 命名空间隔离：from-import 的名称标记为可见结构体
|
||
HandlesStruct.add_visible_struct(self.Trans.Pool, local_name)
|
||
# 注册 re-export 映射：当前模块 re-export 了 local_name，源模块为 resolved
|
||
# 使跨模块调用 module.func() 能解析到正确的源模块 SHA1
|
||
if self.Trans.ModuleSha1 is not None:
|
||
register_reexport(self.Trans.ModuleSha1, local_name, resolved)
|
||
return 0
|
||
|
||
|
||
# ============================================================
|
||
# NewImportsHandle - 工厂函数
|
||
# ============================================================
|
||
def NewImportsHandle(pool: memhub.MemBuddy | t.CPtr,
|
||
trans: HT.Translator | t.CPtr) -> ImportsHandle | t.CPtr:
|
||
h: ImportsHandle | t.CPtr = pool.alloc(ImportsHandle.__sizeof__())
|
||
if h is None:
|
||
return None
|
||
string.memset(h, 0, ImportsHandle.__sizeof__())
|
||
h.Trans = trans
|
||
return h
|