xxq250/Nasal-Interpreter
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This commit is contained in:
Valk Richard Li
2020-01-26 22:08:25 +08:00
committed by GitHub
parent 036bd1ca7c
commit c4b929bfd6
1 changed files with 21 additions and 18 deletions
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version2.0/nasal_parse.h
+21 -18
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@@ -33,6 +33,7 @@ class nasal_parse
bool check_multi_assignment();// check multi_call_id '=' multi_scalar
bool check_multi_scalar(); // check multi_scalar
bool check_var_in_curve(); // check multi_definition: (var id,id,id)
bool check_function_end(abstract_syntax_tree&); // check end of definition or '=' is a function
// abstract_syntax_tree generation
// block statements generation
@@ -296,6 +297,22 @@ bool nasal_parse::check_var_in_curve()
return ret;
}
bool nasal_parse::check_function_end(abstract_syntax_tree& tmp)
{
if(tmp.get_node_type()==__definition || tmp.get_node_type()==__equal)
{
if(!tmp.get_children().empty())
{
if(tmp.get_children().back().get_node_type()==__function)
return true;
else
return check_function_end(tmp.get_children().back());
}
return false;
}
return false;
}
void nasal_parse::main_generate()
{
error=0;
@@ -314,10 +331,7 @@ void nasal_parse::main_generate()
case __var:
this->push_token();
root.add_children(definition());
if((!root.get_children().empty()) &&
(!root.get_children().back().get_children().empty()) &&
(root.get_children().back().get_children().back().get_node_type()==__function)
)
if((!root.get_children().empty()) && check_function_end(root.get_children().back()))
need_semi_check=false;
else
need_semi_check=true;
@@ -329,11 +343,7 @@ void nasal_parse::main_generate()
this->push_token();
root.add_children(calculation());
// check assignment function
if((!root.get_children().empty()) &&
(root.get_children().back().get_node_type()==__equal) &&
(!root.get_children().back().get_children().empty()) &&
(root.get_children().back().get_children().back().get_node_type()==__function)
)
if((!root.get_children().empty()) && check_function_end(root.get_children().back()))
need_semi_check=false;
else
need_semi_check=true;
@@ -454,10 +464,7 @@ abstract_syntax_tree nasal_parse::block_generate()
case __var:
this->push_token();
block_node.get_children().push_back(definition());
if((!block_node.get_children().empty()) &&
(!block_node.get_children().back().get_children().empty()) &&
(block_node.get_children().back().get_children().back().get_node_type()==__function)
)
if((!block_node.get_children().empty()) && check_function_end(block_node.get_children().back()))
need_semi_check=false;
else
need_semi_check=true;
@@ -468,11 +475,7 @@ abstract_syntax_tree nasal_parse::block_generate()
case __func:
this->push_token();
block_node.add_children(calculation());
if((!block_node.get_children().empty()) &&
(block_node.get_children().back().get_node_type()==__equal) &&
(!block_node.get_children().back().get_children().empty()) &&
(block_node.get_children().back().get_children().back().get_node_type()==__function)
)
if((!block_node.get_children().empty()) && check_function_end(block_node.get_children().back()))
need_semi_check=false;
else
need_semi_check=true;