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fix(iw9): foreach with index

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This commit is contained in:
xensik 2022-11-18 12:31:30 +01:00
parent 8bc4bec600
commit 821f59c694
1 changed files with 40 additions and 10 deletions
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48
src/iw9/xsk/decompiler.cpp
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@ -2090,19 +2090,44 @@ void decompiler::decompile_foreach(const ast::stmt_list::ptr& stmt, std::size_t
std::reverse(vars.begin(), vars.end());
auto loc = stmt->list.at(begin - 2).loc();
auto use_index = false;
if (stmt->list[begin-1] == ast::kind::stmt_assign && stmt->list[begin-1].as_assign->expr.as_assign_equal->rvalue == ast::kind::expr_undefined)
{
use_index = true;
}
auto loc = use_index ? stmt->list.at(begin - 3).loc() : stmt->list.at(begin - 2).loc();
auto init = ast::stmt(std::make_unique<ast::stmt_list>());
if (use_index)
{
init.as_list->list.push_back(std::move(stmt->list[begin-3]));
}
init.as_list->list.push_back(std::move(stmt->list[begin-2]));
init.as_list->list.push_back(std::move(stmt->list[begin-1]));
auto stmt0 = std::move(stmt->list[begin+1]);
begin -= 2; // move begin from 'test' to 'array'
begin -= use_index ? 3 : 2; // move begin from 'test' to 'array'
stmt->list.erase(stmt->list.begin() + begin); // remove 'array'
stmt->list.erase(stmt->list.begin() + begin); // remove 'elem'
stmt->list.erase(stmt->list.begin() + begin); // remove 'key'
if (use_index)
{
stmt->list.erase(stmt->list.begin() + begin); // remove 'index'
}
stmt->list.erase(stmt->list.begin() + begin); // remove 'test'
stmt->list.erase(stmt->list.begin() + begin); // remove 'set'
end -= 5; // move end to 'iter' ( minus 'array', 'elem', 'test' & 'set' )
stmt->list.erase(stmt->list.begin() + begin); // remove 'setelem'
if (use_index)
{
stmt->list.erase(stmt->list.begin() + begin); // remove 'setindex'
}
end -= use_index ? 7 : 5; // move end to 'iter' ( minus 'array', 'key', 'index?', 'test' & 'setelem', 'setindex?' )
stmt->list.erase(stmt->list.begin() + end); // remove 'iter'
stmt->list.erase(stmt->list.begin() + end); // remove 'jumpback
@ -2111,12 +2136,9 @@ void decompiler::decompile_foreach(const ast::stmt_list::ptr& stmt, std::size_t
stmt->list.erase(stmt->list.begin() + end); // remove temp var 'array'
}
auto use_key = true;
if (stmt->list.size() > end && stmt->list.at(end) == ast::kind::asm_clear)
{
stmt->list.erase(stmt->list.begin() + end); // remove temp var 'key'
use_key = false;
}
auto foreach_stmt = std::make_unique<ast::stmt_list>(loc);
@ -2131,7 +2153,7 @@ void decompiler::decompile_foreach(const ast::stmt_list::ptr& stmt, std::size_t
decompile_statements(foreach_stmt);
blocks_.pop_back();
auto new_stmt = ast::stmt(std::make_unique<ast::stmt_foreach>(loc, ast::stmt(std::move(foreach_stmt)), use_key));
auto new_stmt = ast::stmt(std::make_unique<ast::stmt_foreach>(loc, ast::stmt(std::move(foreach_stmt)), use_index));
new_stmt.as_foreach->vars = vars;
new_stmt.as_foreach->pre_expr = std::move(init);
new_stmt.as_foreach->stmt0 = std::move(stmt0);
@ -2681,8 +2703,16 @@ void decompiler::process_stmt_foreach(const ast::stmt_foreach::ptr& stmt, const
stmt->array_expr = std::move(stmt->pre_expr.as_list->list[0].as_assign->expr.as_assign->rvalue);
stmt->value_expr = std::move(stmt->stmt0.as_assign->expr.as_assign->lvalue);
if (stmt->use_key)
{
stmt->key_expr = std::move(stmt->pre_expr.as_list->list[2].as_assign->expr.as_assign->lvalue);
}
else
{
stmt->key_expr = std::move(stmt->pre_expr.as_list->list[1].as_assign->expr.as_assign->lvalue);
}
}
void decompiler::process_stmt_switch(const ast::stmt_switch::ptr& stmt, const block::ptr& blk)
{