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author | alexv-smirnov <alex@ydb.tech> | 2023-03-15 19:59:12 +0300 |
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committer | alexv-smirnov <alex@ydb.tech> | 2023-03-15 19:59:12 +0300 |
commit | 056bb284ccf8dd6793ec3a54ffa36c4fb2b9ad11 (patch) | |
tree | 4740980126f32e3af7937ba0ca5f83e59baa4ab0 /contrib/tools/cython/Cython/Compiler/Interpreter.py | |
parent | 269126dcced1cc8b53eb4398b4a33e5142f10290 (diff) | |
download | ydb-056bb284ccf8dd6793ec3a54ffa36c4fb2b9ad11.tar.gz |
add library/cpp/actors, ymake build to ydb oss export
Diffstat (limited to 'contrib/tools/cython/Cython/Compiler/Interpreter.py')
-rw-r--r-- | contrib/tools/cython/Cython/Compiler/Interpreter.py | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/contrib/tools/cython/Cython/Compiler/Interpreter.py b/contrib/tools/cython/Cython/Compiler/Interpreter.py new file mode 100644 index 0000000000..9ec391f2a0 --- /dev/null +++ b/contrib/tools/cython/Cython/Compiler/Interpreter.py @@ -0,0 +1,64 @@ +""" +This module deals with interpreting the parse tree as Python +would have done, in the compiler. + +For now this only covers parse tree to value conversion of +compile-time values. +""" + +from __future__ import absolute_import + +from .Nodes import * +from .ExprNodes import * +from .Errors import CompileError + + +class EmptyScope(object): + def lookup(self, name): + return None + +empty_scope = EmptyScope() + +def interpret_compiletime_options(optlist, optdict, type_env=None, type_args=()): + """ + Tries to interpret a list of compile time option nodes. + The result will be a tuple (optlist, optdict) but where + all expression nodes have been interpreted. The result is + in the form of tuples (value, pos). + + optlist is a list of nodes, while optdict is a DictNode (the + result optdict is a dict) + + If type_env is set, all type nodes will be analysed and the resulting + type set. Otherwise only interpretateable ExprNodes + are allowed, other nodes raises errors. + + A CompileError will be raised if there are problems. + """ + + def interpret(node, ix): + if ix in type_args: + if type_env: + type = node.analyse_as_type(type_env) + if not type: + raise CompileError(node.pos, "Invalid type.") + return (type, node.pos) + else: + raise CompileError(node.pos, "Type not allowed here.") + else: + if (sys.version_info[0] >=3 and + isinstance(node, StringNode) and + node.unicode_value is not None): + return (node.unicode_value, node.pos) + return (node.compile_time_value(empty_scope), node.pos) + + if optlist: + optlist = [interpret(x, ix) for ix, x in enumerate(optlist)] + if optdict: + assert isinstance(optdict, DictNode) + new_optdict = {} + for item in optdict.key_value_pairs: + new_key, dummy = interpret(item.key, None) + new_optdict[new_key] = interpret(item.value, item.key.value) + optdict = new_optdict + return (optlist, new_optdict) |