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Nasal-Interpreter
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update

This commit is contained in:
Valk Richard Li 2020-07-15 02:15:38 -07:00 committed by GitHub
parent 6ba888e445
commit e2cefa124e
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 14 additions and 9 deletions
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2
version3.0/nasal.ebnf
View File

@ -17,7 +17,7 @@ hash ::=
'{' {hashmember ','} '}'
;
hashmember::=
id ':' calculation
id|string ':' calculation
;
function::=
func argument_list expressions

21
version3.0/nasal_parse.h
View File

@ -205,16 +205,20 @@ bool nasal_parse::check_special_call()
// special call means like this:
// function_name(a:1,b:2,c:3);
int check_ptr=ptr+1;
int curve_cnt=1;
int curve_cnt=1,bracket_cnt=0,brace_cnt=0;
bool ret=false;
while(check_ptr<tok_list_size && curve_cnt)
{
switch(tok_list[check_ptr].type)
{
case tok_left_curve:++curve_cnt;break;
case tok_right_curve:--curve_cnt;break;
case tok_left_curve: ++curve_cnt; break;
case tok_left_bracket: ++bracket_cnt;break;
case tok_left_brace: ++brace_cnt; break;
case tok_right_curve: --curve_cnt; break;
case tok_right_bracket:--bracket_cnt;break;
case tok_right_brace: --brace_cnt; break;
}
if(curve_cnt==1 && tok_list[check_ptr].type==tok_colon)
if(curve_cnt==1 && !bracket_cnt && !brace_cnt && tok_list[check_ptr].type==tok_colon)
{
ret=true;
break;
@ -311,8 +315,9 @@ nasal_ast nasal_parse::hash_gen()
{
node.add_child(hash_member_gen());
++ptr;
if(ptr<tok_list_size && tok_list[ptr].type==tok_comma) ++ptr;
else if(ptr<tok_list_size && tok_list[ptr].type!=tok_comma && tok_list[ptr].type!=tok_right_brace)
if(ptr>=tok_list_size) break;
if(tok_list[ptr].type==tok_comma) ++ptr;
else if(tok_list[ptr].type!=tok_comma && tok_list[ptr].type!=tok_right_brace)
{
error_info(error_line,lack_comma);
++error;
@ -329,14 +334,14 @@ nasal_ast nasal_parse::hash_gen()
nasal_ast nasal_parse::hash_member_gen()
{
nasal_ast node;
if(ptr>=tok_list_size || tok_list[ptr].type!=tok_identifier)
if(ptr>=tok_list_size || (tok_list[ptr].type!=tok_identifier && tok_list[ptr].type!=tok_string))
{
error_info(error_line,lack_identifier);
return node;
}
node.set_line(tok_list[ptr].line);
node.set_type(ast_hashmember);
node.add_child(id_gen());
node.add_child(tok_list[ptr].type==tok_identifier?id_gen():string_gen());
++ptr;
if(ptr>=tok_list_size || tok_list[ptr].type!=tok_colon)
{