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front end optimization&stack overflow prompt

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change parameter type to avoid unnecessary copies of string.
change stack depth from 65536<<4 to 16+(65536<<2).
now you could know stack overflow when it happens
This commit is contained in:
Valk Richard Li
2021-06-07 23:53:43 +08:00
parent a3dbaebfd8
commit 166fe32839
10 changed files with 172 additions and 396 deletions
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nasal_ast.h
+36 -156
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@@ -4,8 +4,7 @@
enum ast_node
{
ast_null=0,
ast_root,
ast_block,
ast_root,ast_block,
ast_nil,ast_num,ast_str,ast_id,ast_func,ast_hash,ast_vec,
ast_hashmember,ast_call,ast_callh,ast_callv,ast_callf,ast_subvec,
ast_args,ast_default_arg,ast_dynamic_id,
@@ -20,74 +19,31 @@ enum ast_node
ast_for,ast_forindex,ast_foreach,ast_while,ast_new_iter,
ast_conditional,ast_if,ast_elsif,ast_else,
ast_multi_id,ast_multi_scalar,
ast_definition,ast_multi_assign,
ast_continue,ast_break,ast_return
ast_def,ast_multi_assign,
ast_continue,ast_break,ast_ret
};
std::string ast_name(int type)
const char* ast_name[]=
{
switch(type)
{
case ast_null: return "null";
case ast_root: return "root";
case ast_block: return "block";
case ast_nil: return "nil";
case ast_num: return "number";
case ast_str: return "string";
case ast_id: return "id";
case ast_func: return "function";
case ast_hash: return "hash";
case ast_vec: return "vector";
case ast_hashmember: return "hashmember";
case ast_call: return "call";
case ast_callh: return "callh";
case ast_callv: return "callv";
case ast_callf: return "callf";
case ast_subvec: return "subvec";
case ast_args: return "args";
case ast_default_arg: return "deflt_arg";
case ast_dynamic_id: return "dyn_id";
case ast_and: return "and";
case ast_or: return "or";
case ast_equal: return "=";
case ast_addeq: return "+=";
case ast_subeq: return "-=";
case ast_multeq: return "*=";
case ast_diveq: return "/=";
case ast_lnkeq: return "~=";
case ast_cmpeq: return "==";
case ast_neq: return "!=";
case ast_less: return "<";
case ast_leq: return "<=";
case ast_grt: return ">";
case ast_geq: return ">=";
case ast_add: return "+";
case ast_sub: return "-";
case ast_mult: return "*";
case ast_div: return "/";
case ast_link: return "~";
case ast_neg: return "unary-";
case ast_not: return "unary!";
case ast_trino: return "trino";
case ast_for: return "for";
case ast_forindex: return "forindex";
case ast_foreach: return "foreach";
case ast_while: return "while";
case ast_new_iter: return "iter";
case ast_conditional: return "conditional";
case ast_if: return "if";
case ast_elsif: return "elsif";
case ast_else: return "else";
case ast_multi_id: return "multi_id";
case ast_multi_scalar: return "multi_scalar";
case ast_definition: return "def";
case ast_multi_assign: return "multi_assign";
case ast_continue: return "continue";
case ast_break: return "break";
case ast_return: return "return";
}
return "null";
}
"null",
"root","block",
"nil","num","str","id","func","hash","vec",
"hashmember","call","callh","callv","callf","subvec",
"args","deflt_arg","dyn_id",
"and","or",
"=","+=","-=","*=","/=","~=",
"==","!=",
"<","<=",
">",">=",
"+","-","*","/","~",
"unary-","unary!",
"trino",
"for","forindex","foreach","while","iter",
"conditional","if","elsif","else",
"multi_id","multi_scalar",
"def","multi_assign",
"continue","break","return"
};
class nasal_ast
{
@@ -98,39 +54,24 @@ private:
std::string str;
std::vector<nasal_ast> children;
public:
nasal_ast();
nasal_ast(int,int);
nasal_ast(){line=0;type=ast_null;}
nasal_ast(int l,int t){line=l;type=t;}
nasal_ast(const nasal_ast&);
~nasal_ast();
nasal_ast& operator=(const nasal_ast&);
void print_ast(int);
void clear();
void set_line(int);
void set_type(int);
void set_str(std::string&);
void set_num(double);
void add_child(nasal_ast);
int get_line();
int get_type();
double get_num();
std::string& get_str();
std::vector<nasal_ast>& get_children();
void add_child(nasal_ast ast){children.push_back(ast);}
void set_line(int l){line=l;}
void set_type(int t){type=t;}
void set_str(std::string& s){str=s;}
void set_num(double n){num=n;}
int get_line(){return line;}
int get_type(){return type;}
double get_num(){return num;}
std::string& get_str(){return str;}
std::vector<nasal_ast>& get_children(){return children;}
};
nasal_ast::nasal_ast()
{
line=0;
type=ast_null;
return;
}
nasal_ast::nasal_ast(int _line,int _type)
{
line=_line;
type=_type;
return;
}
nasal_ast::nasal_ast(const nasal_ast& tmp)
{
line=tmp.line;
@@ -141,12 +82,6 @@ nasal_ast::nasal_ast(const nasal_ast& tmp)
return;
}
nasal_ast::~nasal_ast()
{
children.clear();
return;
}
nasal_ast& nasal_ast::operator=(const nasal_ast& tmp)
{
line=tmp.line;
@@ -167,67 +102,12 @@ void nasal_ast::clear()
return;
}
void nasal_ast::set_line(int l)
{
line=l;
return;
}
void nasal_ast::set_type(int t)
{
type=t;
return;
}
void nasal_ast::set_str(std::string& s)
{
str=s;
return;
}
void nasal_ast::set_num(double n)
{
num=n;
return;
}
void nasal_ast::add_child(nasal_ast ast)
{
children.push_back(ast);
return;
}
int nasal_ast::get_line()
{
return line;
}
int nasal_ast::get_type()
{
return type;
}
std::string& nasal_ast::get_str()
{
return str;
}
double nasal_ast::get_num()
{
return num;
}
std::vector<nasal_ast>& nasal_ast::get_children()
{
return children;
}
void nasal_ast::print_ast(int depth)
{
std::string indentation="";
for(int i=0;i<depth;++i)
indentation+="| ";
std::cout<<indentation<<ast_name(type);
std::cout<<indentation<<ast_name[type];
if(type==ast_str || type==ast_id || type==ast_dynamic_id || type==ast_callh)
std::cout<<":"<<str;
else if(type==ast_num)