8933c9a4a9
Ignore 'boilerplate' opcodes that set up the async iteration logic internally (https://www.python.org/dev/peps/pep-0492/#asynchronous-iterators-and-async-for) - We don’t need any of this as GET_AITER is enough to tell us that we are in an `async for`.
121 lines
2.9 KiB
C++
121 lines
2.9 KiB
C++
#include "ASTNode.h"
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#include <bytecode.h>
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/* ASTNodeList */
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void ASTNodeList::removeLast()
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{
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list_t::iterator it = m_nodes.end();
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--it;
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m_nodes.erase(it);
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}
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void ASTNodeList::removeFirst()
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{
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m_nodes.erase(m_nodes.cbegin());
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}
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/* ASTUnary */
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const char* ASTUnary::op_str() const
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{
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static const char* s_op_strings[] = {
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"+", "-", "~", "not "
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};
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return s_op_strings[op()];
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}
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/* ASTBinary */
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const char* ASTBinary::op_str() const
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{
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static const char* s_op_strings[] = {
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".", " ** ", " * ", " / ", " // ", " % ", " + ", " - ",
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" << ", " >> ", " & ", " ^ ", " | ", " and ", " or ", " @ ",
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" += ", " -= ", " *= ", " /= ", " %= ", " **= ", " <<= ",
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" >>= ", " &= ", " ^= ", " |= ", " //= ", " @= ",
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};
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return s_op_strings[op()];
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}
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/* ASTCompare */
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const char* ASTCompare::op_str() const
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{
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static const char* s_cmp_strings[] = {
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" < ", " <= ", " == ", " != ", " > ", " >= ", " in ", " not in ", " is ", " is not ",
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"<EXCEPTION MATCH>", "<BAD>"
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};
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return s_cmp_strings[op()];
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}
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/* ASTKeyword */
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const char* ASTKeyword::word_str() const
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{
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static const char* s_word_strings[] = {
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"pass", "break", "continue"
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};
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return s_word_strings[key()];
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}
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/* ASTBlock */
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void ASTBlock::removeLast()
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{
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list_t::iterator it = m_nodes.end();
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--it;
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m_nodes.erase(it);
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}
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void ASTBlock::removeFirst()
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{
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m_nodes.erase(m_nodes.begin());
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}
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const char* ASTBlock::type_str() const
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{
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static const char* s_type_strings[] = {
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"", "if", "else", "elif", "try", "CONTAINER", "except",
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"finally", "while", "for", "with", "async for"
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};
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return s_type_strings[blktype()];
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}
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/* ASTIterBlock */
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const int ASTIterBlock::ASYNCFOR_BOILER_READLOOPINDEX = 4;
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const int ASTIterBlock::ASYNCFOR_BOILER_READLOOPCONTENTS = 11;
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const int ASTIterBlock::ASYNCFOR_BOILER_OFFSETFROMEND = 12;
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const int ASTIterBlock::ASYNCFOR_BOILER_FIRSTJUMP = 5;
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const Pyc::Opcode ASTIterBlock::ASYNCFOR_BOILER_ALTJUMPOP = Pyc::JUMP_ABSOLUTE_A;
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const std::vector<Pyc::Opcode> ASTIterBlock::ASYNCFOR_BOILERPLATE = {
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// Ignore all these after GET_AITER.
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Pyc::SETUP_EXCEPT_A,
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Pyc::GET_ANEXT,
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Pyc::LOAD_CONST_A, // None
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Pyc::YIELD_FROM,
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// Process ops from here to load index variable.
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// Continue ignoring all these
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Pyc::POP_BLOCK,
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Pyc::JUMP_FORWARD_A, // or JUMP_ABSOLUTE if pass
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Pyc::DUP_TOP,
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Pyc::LOAD_GLOBAL_A, // StopAsyncIteration
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Pyc::COMPARE_OP_A, // (<EXCEPTION MATCH>)
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Pyc::POP_JUMP_IF_TRUE_A,
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Pyc::END_FINALLY,
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// Actual code inside the loop begins here. 'Preamble' before this, 'Trailer' after.
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// After reading a JUMP at the address we are expecting, ignore the following:
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Pyc::POP_TOP,
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Pyc::POP_TOP,
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Pyc::POP_TOP,
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Pyc::POP_EXCEPT,
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Pyc::POP_TOP
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// Then a POP_BLOCK as per normal loop
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};
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