floraachy/Nasal-Interpreter
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This commit is contained in:
Valk Richard Li
2020-01-11 22:04:07 +08:00
committed by GitHub
parent ee7934fc58
commit 3683dca3bb
4 changed files with 187 additions and 117 deletions
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version2.0/nasal_enum.h
+35 -24
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@@ -25,7 +25,6 @@ void print_lexer_token(int type)
enum parse_token_type
{
__stack_end=1,
__stack_top,
__cmp_equal,__cmp_not_equal,__cmp_less,__cmp_less_or_equal,__cmp_more,__cmp_more_or_equal,
// == != < <= > >=
__and_operator,__or_operator,__nor_operator,__add_operator,__sub_operator,__mul_operator,__div_operator,__link_operator,
@@ -49,6 +48,7 @@ enum parse_token_type
// absttract_syntax_tree type below
__root,
__null_type,
__multi_id,
__list,__hash,
__hash_member,
__call_function,__call_array,__call_hash,
@@ -63,7 +63,6 @@ void print_parse_token(int type)
switch(type)
{
case __stack_end: context="#"; break;
case __stack_top: context="#"; break;
case __cmp_equal: context="=="; break;
case __cmp_not_equal: context="!="; break;
@@ -122,20 +121,21 @@ void print_parse_token(int type)
case __number: context="number"; break;
case __string: context="string"; break;
case __root: context="root"; break;
case __null_type: context="null_type"; break;
case __list: context="list"; break;
case __hash: context="hash"; break;
case __hash_member: context="hash_member";break;
case __call_function: context="call_func"; break;
case __call_array: context="call_array"; break;
case __call_hash: context="call_hash"; break;
case __normal_statement_block:context="block"; break;
case __definition: context="definition"; break;
case __assignment: context="assignment"; break;
case __function: context="function"; break;
case __loop: context="loop"; break;
case __ifelse: context="if-else"; break;
case __root: context="root"; break;
case __null_type: context="null_type"; break;
case __multi_id: context="multi_identifiers"; break;
case __list: context="list"; break;
case __hash: context="hash"; break;
case __hash_member: context="hash_member"; break;
case __call_function: context="call_func"; break;
case __call_array: context="call_array"; break;
case __call_hash: context="call_hash"; break;
case __normal_statement_block:context="block"; break;
case __definition: context="definition"; break;
case __assignment: context="assignment"; break;
case __function: context="function"; break;
case __loop: context="loop"; break;
case __ifelse: context="if-else"; break;
default: context="undefined_token";break;
}
@@ -145,26 +145,37 @@ void print_parse_token(int type)
enum parse_error_type
{
parse_unknown_error, // unknown error
error_token_in_main, // when a token should not be the begin of a statement in main
definition_lack_var, // lack 'var' reserve word
definition_lack_id, // lack identifier
parse_unknown_error, // unknown error
error_token_in_main, // when a token should not be the begin of a statement in main
definition_lack_id, // lack identifier
definition_lack_equal, // lack '=' when not getting ';'
definition_wrong_type, // need identifier but get number or string
multi_definition_need_curve, // lack right curve when generating 'var (id,id,id)'
};
void print_parse_error(int error_type,int line,int error_token_type=__stack_end)
{
std::string error_info_head=">>[Parse-error] line ";
std::string warning_info_head=">> [Parse-warning] line ";
switch(error_type)
{
case parse_unknown_error: std::cout<<error_info_head<<line<<": unknown parse error. error id: parse_unknown_error."<<std::endl;break;
case parse_unknown_error:
std::cout<<error_info_head<<line<<": unknown parse error. error id: parse_unknown_error."<<std::endl;break;
case error_token_in_main:
std::cout<<error_info_head<<line<<": statements should not begin with \'";
print_parse_token(error_token_type);
std::cout<<"\' in main scope."<<std::endl;
break;
case definition_lack_var: std::cout<<error_info_head<<line<<": expect a \'var\' here."<<std::endl;break;
case definition_lack_id: std::cout<<error_info_head<<line<<": expect identifier(s) after \'var\'."<<std::endl;break;
default: std::cout<<error_info_head<<line<<": unknown parse error. error id: other_type."<<std::endl;break;
case definition_lack_id:
std::cout<<error_info_head<<line<<": expect identifier(s) after \'var\'."<<std::endl;break;
case definition_lack_equal:
std::cout<<error_info_head<<line<<": expect a \'=\' here."<<std::endl;break;
case definition_wrong_type:
std::cout<<error_info_head<<line<<": expect an identifier here but get other types."<<std::endl;
case multi_definition_need_curve:
std::cout<<error_info_head<<line<<": expect a \')\' here."<<std::endl;
default:
std::cout<<error_info_head<<line<<": unknown parse error. error id: other_type."<<std::endl;break;
}
return;
}