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Flatten the Value reference representation.

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All values are now references into the value table, so drop the
distinction between direct and table values. Direct values don't exist
any more.

Also remove the parser support for the 'vxNN' syntax. Only 'vNN' values
can be parsed now.
This commit is contained in:
Jakob Stoklund Olesen
2017-04-12 14:26:23 -07:00
parent 7cac9dcb41
commit 23ae70cacf
15 changed files with 115 additions and 264 deletions
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10
lib/reader/src/lexer.rs
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@@ -34,7 +34,7 @@ pub enum Token<'a> {
Float(&'a str), // Floating point immediate
Integer(&'a str), // Integer immediate
Type(types::Type), // i32, f32, b32x4, ...
Value(Value), // v12, vx7
Value(Value), // v12, v7
Ebb(Ebb), // ebb3
StackSlot(u32), // ss3
JumpTable(u32), // jt2
@@ -306,8 +306,7 @@ impl<'a> Lexer<'a> {
// decoded token.
fn numbered_entity(prefix: &str, number: u32) -> Option<Token<'a>> {
match prefix {
"v" => Value::direct_with_number(number).map(|v| Token::Value(v)),
"vx" => Value::table_with_number(number).map(|v| Token::Value(v)),
"v" => Value::with_number(number).map(|v| Token::Value(v)),
"ebb" => Ebb::with_number(number).map(|ebb| Token::Ebb(ebb)),
"ss" => Some(Token::StackSlot(number)),
"jt" => Some(Token::JumpTable(number)),
@@ -531,15 +530,14 @@ mod tests {
let mut lex = Lexer::new("v0 v00 vx01 ebb1234567890 ebb5234567890 v1x vx1 vxvx4 \
function0 function b1 i32x4 f32x5");
assert_eq!(lex.next(),
token(Token::Value(Value::direct_with_number(0).unwrap()), 1));
token(Token::Value(Value::with_number(0).unwrap()), 1));
assert_eq!(lex.next(), token(Token::Identifier("v00"), 1));
assert_eq!(lex.next(), token(Token::Identifier("vx01"), 1));
assert_eq!(lex.next(),
token(Token::Ebb(Ebb::with_number(1234567890).unwrap()), 1));
assert_eq!(lex.next(), token(Token::Identifier("ebb5234567890"), 1));
assert_eq!(lex.next(), token(Token::Identifier("v1x"), 1));
assert_eq!(lex.next(),
token(Token::Value(Value::table_with_number(1).unwrap()), 1));
assert_eq!(lex.next(), token(Token::Identifier("vx1"), 1));
assert_eq!(lex.next(), token(Token::Identifier("vxvx4"), 1));
assert_eq!(lex.next(), token(Token::Identifier("function0"), 1));
assert_eq!(lex.next(), token(Token::Identifier("function"), 1));