bjoernager/rust
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Stringify op tokens.

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This commit is contained in:
Graydon Hoare 2010-08-20 15:57:59 -07:00
parent a2bd79a6ac
commit c0e173e19a
1 changed files with 29 additions and 2 deletions
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31
src/comp/fe/token.rs
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@ -152,10 +152,37 @@ type token = tag
BRACEQUOTE(str), BRACEQUOTE(str),
EOF()); EOF());
fn op_to_str(op o) -> str {
alt (o) {
case (PLUS()) { ret "+"; }
case (MINUS()) { ret "-"; }
case (STAR()) { ret "*"; }
case (SLASH()) { ret "/"; }
case (PERCENT()) { ret "%"; }
case (EQ()) { ret "="; }
case (LT()) { ret "<"; }
case (LE()) { ret "<="; }
case (EQEQ()) { ret "=="; }
case (NE()) { ret "!="; }
case (GE()) { ret ">="; }
case (GT()) { ret ">"; }
case (NOT()) { ret "!"; }
case (TILDE()) { ret "~"; }
case (CARET()) { ret "^"; }
case (AND()) { ret "&"; }
case (ANDAND()) { ret "&&"; }
case (OR()) { ret "|"; }
case (OROR()) { ret "||"; }
case (LSL()) { ret "<<"; }
case (LSR()) { ret ">>"; }
case (ASR()) { ret ">>>"; }
}
}
fn to_str(token t) -> str { fn to_str(token t) -> str {
alt (t) { alt (t) {
case (OP(_)) { ret "<op>"; } case (OP(op)) { ret op_to_str(op); }
case (OPEQ(_)) { ret "<op>="; } case (OPEQ(op)) { ret op_to_str(op) + "="; }
case (AS()) { ret "as"; } case (AS()) { ret "as"; }
case (WITH()) { ret "with"; } case (WITH()) { ret "with"; }