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add boolean logic

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r4
2021-12-23 21:06:49 +01:00
parent d185396a1c
commit 84785dc3cf
10 changed files with 155 additions and 29 deletions
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35
lex.c
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@@ -58,6 +58,10 @@ TokList lex(const char *s) {
emit(&toks, &pos, (Tok){ .kind = TokElse });
else if (streq_0_n("while", start, i))
emit(&toks, &pos, (Tok){ .kind = TokWhile });
else if (streq_0_n("true", start, i))
emit(&toks, &pos, (Tok){ .kind = TokVal, .Val = { .type = { .kind = TypeBool, }, .Bool = true, }, });
else if (streq_0_n("false", start, i))
emit(&toks, &pos, (Tok){ .kind = TokVal, .Val = { .type = { .kind = TypeBool, }, .Bool = false, }, });
else {
emit(&toks, &pos, (Tok){
.kind = TokIdent,
@@ -162,15 +166,39 @@ TokList lex(const char *s) {
break;
case ':':
consume(&pos, *(s++));
if (s[0] == '=') {
if (s[0] == '=')
emit(&toks, &pos, (Tok){ .kind = TokDeclare });
} else {
else {
set_err("Expected ':='");
return toks;
}
break;
case '=':
emit(&toks, &pos, (Tok){ .kind = TokAssign });
consume(&pos, *(s++));
if (s[0] == '=')
emit(&toks, &pos, (Tok){ .kind = TokOp, .Op = OpEq });
else {
emit(&toks, &pos, (Tok){ .kind = TokAssign });
continue;
}
break;
case '<':
consume(&pos, *(s++));
if (s[0] == '=')
emit(&toks, &pos, (Tok){ .kind = TokOp, .Op = OpLe });
else {
emit(&toks, &pos, (Tok){ .kind = TokOp, .Op = OpLt });
continue;
}
break;
case '>':
consume(&pos, *(s++));
if (s[0] == '=')
emit(&toks, &pos, (Tok){ .kind = TokOp, .Op = OpGe });
else {
emit(&toks, &pos, (Tok){ .kind = TokOp, .Op = OpGt });
continue;
}
break;
case '{':
case '}':
@@ -180,6 +208,7 @@ TokList lex(const char *s) {
case '+':
case '-':
case '*':
case '!':
emit(&toks, &pos, (Tok){
.kind = TokOp,
.Op = s[0],