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Valk Richard Li
2021-06-13 01:01:32 +08:00
parent 1d3c4b0843
commit 411c2e5c4c
4 changed files with 67 additions and 77 deletions
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nasal_parse.h
+20 -23
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@@ -271,10 +271,8 @@ void nasal_parse::check_memory_reachable(nasal_ast& node)
{
if(node.get_children()[0].get_type()!=ast_id)
die(node.get_line(),"cannot get the memory of a temporary data");
int size=node.get_children().size();
for(int i=0;i<size;++i)
for(auto& tmp:node.get_children())
{
nasal_ast& tmp=node.get_children()[i];
if(tmp.get_type()==ast_callf)
die(tmp.get_line(),"cannot get the memory of function-returned value");
if(tmp.get_type()==ast_callv && (tmp.get_children().size()>1 || tmp.get_children()[0].get_type()==ast_subvec))
@@ -419,41 +417,40 @@ nasal_ast nasal_parse::args_gen()
match(tok_rcurve,"expected \')\' after parameter list");
std::string args_format="func(";
int node_child_size=node.get_children().size();
for(int i=0;i<node_child_size;++i)
for(auto& tmp:node.get_children())
{
switch(node.get_children()[i].get_type())
switch(tmp.get_type())
{
case ast_id: args_format+="val";break;
case ast_id: args_format+="val";break;
case ast_default_arg: args_format+="val=scalar";break;
case ast_dynamic_id: args_format+="val...";break;
}
args_format+=",)"[i==node_child_size-1];
args_format+=",)"[&tmp==&node.get_children().back()];
}
bool checked_default_val=false,checked_dynamic_ids=false;
for(int i=0;i<node_child_size;++i)
for(auto& tmp:node.get_children())
{
if(node.get_children()[i].get_type()==ast_default_arg)
if(tmp.get_type()==ast_default_arg)
checked_default_val=true;
else if(node.get_children()[i].get_type()==ast_dynamic_id)
else if(tmp.get_type()==ast_dynamic_id)
checked_dynamic_ids=true;
if(checked_default_val && node.get_children()[i].get_type()!=ast_default_arg)
die(node.get_children()[i].get_line(),"must use default arguments until the end of argument list: "+args_format);
if(checked_dynamic_ids && i!=node_child_size-1)
die(node.get_children()[i].get_line(),"dynamic identifier must be the end of argument list: "+args_format);
if(checked_default_val && tmp.get_type()!=ast_default_arg)
die(tmp.get_line(),"must use default parameters after using it once: "+args_format);
if(checked_dynamic_ids && &tmp!=&node.get_children().back())
die(tmp.get_line(),"dynamic parameter must be the end: "+args_format);
}
std::unordered_map<std::string,bool> argname_table;
for(int i=0;i<node_child_size;++i)
for(auto& tmp:node.get_children())
{
std::string new_name;
switch(node.get_children()[i].get_type())
switch(tmp.get_type())
{
case ast_dynamic_id:
case ast_id:new_name=node.get_children()[i].get_str();break;
case ast_default_arg:new_name=node.get_children()[i].get_children()[0].get_str();break;
case ast_id:new_name=tmp.get_str();break;
case ast_default_arg:tmp.get_children()[0].get_str();break;
}
if(argname_table.find(new_name)!=argname_table.end())
die(node.get_children()[i].get_line(),"argument name should not repeat");
if(argname_table.count(new_name))
die(tmp.get_line(),"parameter's name repeats: "+new_name);
else
argname_table[new_name]=true;
}
@@ -464,9 +461,9 @@ nasal_ast nasal_parse::expr()
nasal_ast node(tok_list[ptr].line,ast_null);
int tok_type=tok_list[ptr].type;
if((tok_type==tok_break || tok_type==tok_continue) && !in_loop)
die(error_line,"cannot use break/continue outside loop");
die(error_line,"use break/continue in the loop");
if(tok_type==tok_ret && !in_function)
die(error_line,"cannot use return outside function");
die(error_line,"use return in the function");
switch(tok_type)
{
case tok_nil: