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Undef value --- (for setting a value to be uninitialized/undefined)

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This commit is contained in:
Ginger Bill
2017-06-26 11:57:26 +01:00
parent 362a118782
commit c642e326ce
8 changed files with 124 additions and 14 deletions
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20
src/tokenizer.cpp
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@@ -56,6 +56,7 @@ TOKEN_KIND(Token__AssignOpEnd, "_AssignOpEnd"), \
TOKEN_KIND(Token_ArrowLeft, "<-"), \
TOKEN_KIND(Token_Inc, "++"), \
TOKEN_KIND(Token_Dec, "--"), \
TOKEN_KIND(Token_Undef, "---"), \
\
TOKEN_KIND(Token__ComparisonBegin, "_ComparisonBegin"), \
TOKEN_KIND(Token_CmpEq, "=="), \
@@ -916,7 +917,24 @@ Token tokenizer_get_token(Tokenizer *t) {
case '~': token.kind = token_kind_variant2(t, Token_Xor, Token_XorEq); break;
case '!': token.kind = token_kind_variant2(t, Token_Not, Token_NotEq); break;
case '+': token.kind = token_kind_variant3(t, Token_Add, Token_AddEq, '+', Token_Inc); break;
case '-': token.kind = token_kind_variant4(t, Token_Sub, Token_SubEq, '-', Token_Dec, '>', Token_ArrowRight); break;
case '-':
token.kind = Token_Sub;
if (t->curr_rune == '=') {
advance_to_next_rune(t);
token.kind = Token_SubEq;
} else if (t->curr_rune == '-') {
advance_to_next_rune(t);
token.kind = Token_Dec;
if (t->curr_rune == '-') {
advance_to_next_rune(t);
token.kind = Token_Undef;
}
} else if (t->curr_rune == '>') {
advance_to_next_rune(t);
token.kind = Token_ArrowRight;
}
break;
case '/': {
if (t->curr_rune == '/') {
while (t->curr_rune != '\n' && t->curr_rune != GB_RUNE_EOF) {