From a1ab7d3cba6c753cd1c838f99fabf029e4c1d035 Mon Sep 17 00:00:00 2001 From: Erick Tryzelaar Date: Tue, 18 Sep 2012 10:47:39 -0700 Subject: [PATCH] libstd: Add serialization2 versions of prettyprint and ebml --- src/libstd/ebml2.rs | 623 +++++++++++++++++++++++++++++++++++++ src/libstd/prettyprint2.rs | 142 +++++++++ src/libstd/std.rc | 8 +- 3 files changed, 772 insertions(+), 1 deletion(-) create mode 100644 src/libstd/ebml2.rs create mode 100644 src/libstd/prettyprint2.rs diff --git a/src/libstd/ebml2.rs b/src/libstd/ebml2.rs new file mode 100644 index 000000000000..8b37dea62108 --- /dev/null +++ b/src/libstd/ebml2.rs @@ -0,0 +1,623 @@ +use serialization2; + +// Simple Extensible Binary Markup Language (ebml) reader and writer on a +// cursor model. See the specification here: +// http://www.matroska.org/technical/specs/rfc/index.html +export Doc; +export doc_at; +export maybe_get_doc; +export get_doc; +export docs; +export tagged_docs; +export doc_data; +export doc_as_str; +export doc_as_u8; +export doc_as_u16; +export doc_as_u32; +export doc_as_u64; +export doc_as_i8; +export doc_as_i16; +export doc_as_i32; +export doc_as_i64; +export Serializer; +export Deserializer; +export with_doc_data; +export get_doc; +export extensions; + +struct EbmlTag { + id: uint, + size: uint, +} + +struct EbmlState { + ebml_tag: EbmlTag, + tag_pos: uint, + data_pos: uint, +} + +// FIXME (#2739): When we have module renaming, make "reader" and "writer" +// separate modules within this file. + +// ebml reading +struct Doc { + data: @~[u8], + start: uint, + end: uint, +} + +struct TaggedDoc { + tag: uint, + doc: Doc, +} + +impl Doc: ops::Index { + pure fn index(+tag: uint) -> Doc { + unsafe { + get_doc(self, tag) + } + } +} + +fn vuint_at(data: &[u8], start: uint) -> {val: uint, next: uint} { + let a = data[start]; + if a & 0x80u8 != 0u8 { + return {val: (a & 0x7fu8) as uint, next: start + 1u}; + } + if a & 0x40u8 != 0u8 { + return {val: ((a & 0x3fu8) as uint) << 8u | + (data[start + 1u] as uint), + next: start + 2u}; + } else if a & 0x20u8 != 0u8 { + return {val: ((a & 0x1fu8) as uint) << 16u | + (data[start + 1u] as uint) << 8u | + (data[start + 2u] as uint), + next: start + 3u}; + } else if a & 0x10u8 != 0u8 { + return {val: ((a & 0x0fu8) as uint) << 24u | + (data[start + 1u] as uint) << 16u | + (data[start + 2u] as uint) << 8u | + (data[start + 3u] as uint), + next: start + 4u}; + } else { error!("vint too big"); fail; } +} + +fn Doc(data: @~[u8]) -> Doc { + Doc { data: data, start: 0u, end: vec::len::(*data) } +} + +fn doc_at(data: @~[u8], start: uint) -> TaggedDoc { + let elt_tag = vuint_at(*data, start); + let elt_size = vuint_at(*data, elt_tag.next); + let end = elt_size.next + elt_size.val; + TaggedDoc { + tag: elt_tag.val, + doc: Doc { data: data, start: elt_size.next, end: end } + } +} + +fn maybe_get_doc(d: Doc, tg: uint) -> Option { + let mut pos = d.start; + while pos < d.end { + let elt_tag = vuint_at(*d.data, pos); + let elt_size = vuint_at(*d.data, elt_tag.next); + pos = elt_size.next + elt_size.val; + if elt_tag.val == tg { + return Some(Doc { data: d.data, start: elt_size.next, end: pos }); + } + } + None +} + +fn get_doc(d: Doc, tg: uint) -> Doc { + match maybe_get_doc(d, tg) { + Some(d) => d, + None => { + error!("failed to find block with tag %u", tg); + fail; + } + } +} + +fn docs(d: Doc, it: fn(uint, Doc) -> bool) { + let mut pos = d.start; + while pos < d.end { + let elt_tag = vuint_at(*d.data, pos); + let elt_size = vuint_at(*d.data, elt_tag.next); + pos = elt_size.next + elt_size.val; + let doc = Doc { data: d.data, start: elt_size.next, end: pos }; + if !it(elt_tag.val, doc) { + break; + } + } +} + +fn tagged_docs(d: Doc, tg: uint, it: fn(Doc) -> bool) { + let mut pos = d.start; + while pos < d.end { + let elt_tag = vuint_at(*d.data, pos); + let elt_size = vuint_at(*d.data, elt_tag.next); + pos = elt_size.next + elt_size.val; + if elt_tag.val == tg { + let doc = Doc { data: d.data, start: elt_size.next, end: pos }; + if !it(doc) { + break; + } + } + } +} + +fn doc_data(d: Doc) -> ~[u8] { vec::slice::(*d.data, d.start, d.end) } + +fn with_doc_data(d: Doc, f: fn(x: &[u8]) -> T) -> T { + f(vec::view(*d.data, d.start, d.end)) +} + +fn doc_as_str(d: Doc) -> ~str { str::from_bytes(doc_data(d)) } + +fn doc_as_u8(d: Doc) -> u8 { + assert d.end == d.start + 1u; + (*d.data)[d.start] +} + +fn doc_as_u16(d: Doc) -> u16 { + assert d.end == d.start + 2u; + io::u64_from_be_bytes(*d.data, d.start, 2u) as u16 +} + +fn doc_as_u32(d: Doc) -> u32 { + assert d.end == d.start + 4u; + io::u64_from_be_bytes(*d.data, d.start, 4u) as u32 +} + +fn doc_as_u64(d: Doc) -> u64 { + assert d.end == d.start + 8u; + io::u64_from_be_bytes(*d.data, d.start, 8u) +} + +fn doc_as_i8(d: Doc) -> i8 { doc_as_u8(d) as i8 } +fn doc_as_i16(d: Doc) -> i16 { doc_as_u16(d) as i16 } +fn doc_as_i32(d: Doc) -> i32 { doc_as_u32(d) as i32 } +fn doc_as_i64(d: Doc) -> i64 { doc_as_u64(d) as i64 } + +// ebml writing +struct Serializer { + writer: io::Writer, + priv mut size_positions: ~[uint], +} + +fn write_sized_vuint(w: io::Writer, n: uint, size: uint) { + match size { + 1u => w.write(&[0x80u8 | (n as u8)]), + 2u => w.write(&[0x40u8 | ((n >> 8_u) as u8), n as u8]), + 3u => w.write(&[0x20u8 | ((n >> 16_u) as u8), (n >> 8_u) as u8, + n as u8]), + 4u => w.write(&[0x10u8 | ((n >> 24_u) as u8), (n >> 16_u) as u8, + (n >> 8_u) as u8, n as u8]), + _ => fail fmt!("vint to write too big: %?", n) + }; +} + +fn write_vuint(w: io::Writer, n: uint) { + if n < 0x7f_u { write_sized_vuint(w, n, 1u); return; } + if n < 0x4000_u { write_sized_vuint(w, n, 2u); return; } + if n < 0x200000_u { write_sized_vuint(w, n, 3u); return; } + if n < 0x10000000_u { write_sized_vuint(w, n, 4u); return; } + fail fmt!("vint to write too big: %?", n); +} + +fn Serializer(w: io::Writer) -> Serializer { + let size_positions: ~[uint] = ~[]; + Serializer { writer: w, mut size_positions: size_positions } +} + +// FIXME (#2741): Provide a function to write the standard ebml header. +impl Serializer { + fn start_tag(tag_id: uint) { + debug!("Start tag %u", tag_id); + + // Write the enum ID: + write_vuint(self.writer, tag_id); + + // Write a placeholder four-byte size. + vec::push(self.size_positions, self.writer.tell()); + let zeroes: &[u8] = &[0u8, 0u8, 0u8, 0u8]; + self.writer.write(zeroes); + } + + fn end_tag() { + let last_size_pos = vec::pop::(self.size_positions); + let cur_pos = self.writer.tell(); + self.writer.seek(last_size_pos as int, io::SeekSet); + let size = (cur_pos - last_size_pos - 4u); + write_sized_vuint(self.writer, size, 4u); + self.writer.seek(cur_pos as int, io::SeekSet); + + debug!("End tag (size = %u)", size); + } + + fn wr_tag(tag_id: uint, blk: fn()) { + self.start_tag(tag_id); + blk(); + self.end_tag(); + } + + fn wr_tagged_bytes(tag_id: uint, b: &[u8]) { + write_vuint(self.writer, tag_id); + write_vuint(self.writer, vec::len(b)); + self.writer.write(b); + } + + fn wr_tagged_u64(tag_id: uint, v: u64) { + do io::u64_to_be_bytes(v, 8u) |v| { + self.wr_tagged_bytes(tag_id, v); + } + } + + fn wr_tagged_u32(tag_id: uint, v: u32) { + do io::u64_to_be_bytes(v as u64, 4u) |v| { + self.wr_tagged_bytes(tag_id, v); + } + } + + fn wr_tagged_u16(tag_id: uint, v: u16) { + do io::u64_to_be_bytes(v as u64, 2u) |v| { + self.wr_tagged_bytes(tag_id, v); + } + } + + fn wr_tagged_u8(tag_id: uint, v: u8) { + self.wr_tagged_bytes(tag_id, &[v]); + } + + fn wr_tagged_i64(tag_id: uint, v: i64) { + do io::u64_to_be_bytes(v as u64, 8u) |v| { + self.wr_tagged_bytes(tag_id, v); + } + } + + fn wr_tagged_i32(tag_id: uint, v: i32) { + do io::u64_to_be_bytes(v as u64, 4u) |v| { + self.wr_tagged_bytes(tag_id, v); + } + } + + fn wr_tagged_i16(tag_id: uint, v: i16) { + do io::u64_to_be_bytes(v as u64, 2u) |v| { + self.wr_tagged_bytes(tag_id, v); + } + } + + fn wr_tagged_i8(tag_id: uint, v: i8) { + self.wr_tagged_bytes(tag_id, &[v as u8]); + } + + fn wr_tagged_str(tag_id: uint, v: &str) { + str::byte_slice(v, |b| self.wr_tagged_bytes(tag_id, b)); + } + + fn wr_bytes(b: &[u8]) { + debug!("Write %u bytes", vec::len(b)); + self.writer.write(b); + } + + fn wr_str(s: ~str) { + debug!("Write str: %?", s); + self.writer.write(str::to_bytes(s)); + } +} + +// FIXME (#2743): optionally perform "relaxations" on end_tag to more +// efficiently encode sizes; this is a fixed point iteration + +// Set to true to generate more debugging in EBML serialization. +// Totally lame approach. +const debug: bool = false; + +enum EbmlSerializerTag { + EsUint, EsU64, EsU32, EsU16, EsU8, + EsInt, EsI64, EsI32, EsI16, EsI8, + EsBool, + EsStr, + EsF64, EsF32, EsFloat, + EsEnum, EsEnumVid, EsEnumBody, + EsVec, EsVecLen, EsVecElt, + + EsOpaque, + + EsLabel // Used only when debugging +} + +priv impl Serializer { + // used internally to emit things like the vector length and so on + fn _emit_tagged_uint(t: EbmlSerializerTag, v: uint) { + assert v <= 0xFFFF_FFFF_u; + self.wr_tagged_u32(t as uint, v as u32); + } + + fn _emit_label(label: &str) { + // There are various strings that we have access to, such as + // the name of a record field, which do not actually appear in + // the serialized EBML (normally). This is just for + // efficiency. When debugging, though, we can emit such + // labels and then they will be checked by deserializer to + // try and check failures more quickly. + if debug { self.wr_tagged_str(EsLabel as uint, label) } + } +} + +impl Serializer { + fn emit_opaque(&self, f: fn()) { + do self.wr_tag(EsOpaque as uint) { + f() + } + } +} + +impl Serializer: serialization2::Serializer { + fn emit_nil(&self) {} + + fn emit_uint(&self, v: uint) { + self.wr_tagged_u64(EsUint as uint, v as u64); + } + fn emit_u64(&self, v: u64) { self.wr_tagged_u64(EsU64 as uint, v); } + fn emit_u32(&self, v: u32) { self.wr_tagged_u32(EsU32 as uint, v); } + fn emit_u16(&self, v: u16) { self.wr_tagged_u16(EsU16 as uint, v); } + fn emit_u8(&self, v: u8) { self.wr_tagged_u8 (EsU8 as uint, v); } + + fn emit_int(&self, v: int) { + self.wr_tagged_i64(EsInt as uint, v as i64); + } + fn emit_i64(&self, v: i64) { self.wr_tagged_i64(EsI64 as uint, v); } + fn emit_i32(&self, v: i32) { self.wr_tagged_i32(EsI32 as uint, v); } + fn emit_i16(&self, v: i16) { self.wr_tagged_i16(EsI16 as uint, v); } + fn emit_i8(&self, v: i8) { self.wr_tagged_i8 (EsI8 as uint, v); } + + fn emit_bool(&self, v: bool) { + self.wr_tagged_u8(EsBool as uint, v as u8) + } + + // FIXME (#2742): implement these + fn emit_f64(&self, _v: f64) { fail ~"Unimplemented: serializing an f64"; } + fn emit_f32(&self, _v: f32) { fail ~"Unimplemented: serializing an f32"; } + fn emit_float(&self, _v: float) { + fail ~"Unimplemented: serializing a float"; + } + + fn emit_str(&self, v: &str) { self.wr_tagged_str(EsStr as uint, v) } + + fn emit_enum(&self, name: &str, f: fn()) { + self._emit_label(name); + self.wr_tag(EsEnum as uint, f) + } + fn emit_enum_variant(&self, _v_name: &str, v_id: uint, _cnt: uint, + f: fn()) { + self._emit_tagged_uint(EsEnumVid, v_id); + self.wr_tag(EsEnumBody as uint, f) + } + fn emit_enum_variant_arg(&self, _idx: uint, f: fn()) { f() } + + fn emit_vec(&self, len: uint, f: fn()) { + do self.wr_tag(EsVec as uint) { + self._emit_tagged_uint(EsVecLen, len); + f() + } + } + + fn emit_vec_elt(&self, _idx: uint, f: fn()) { + self.wr_tag(EsVecElt as uint, f) + } + + fn emit_box(&self, f: fn()) { f() } + fn emit_uniq(&self, f: fn()) { f() } + fn emit_rec(&self, f: fn()) { f() } + fn emit_rec_field(&self, f_name: &str, _f_idx: uint, f: fn()) { + self._emit_label(f_name); + f() + } + fn emit_tup(&self, _sz: uint, f: fn()) { f() } + fn emit_tup_elt(&self, _idx: uint, f: fn()) { f() } +} + +struct Deserializer { + priv mut parent: Doc, + priv mut pos: uint, +} + +fn Deserializer(d: Doc) -> Deserializer { + Deserializer { mut parent: d, mut pos: d.start } +} + +priv impl Deserializer { + fn _check_label(lbl: ~str) { + if self.pos < self.parent.end { + let TaggedDoc { tag: r_tag, doc: r_doc } = + doc_at(self.parent.data, self.pos); + + if r_tag == (EsLabel as uint) { + self.pos = r_doc.end; + let str = doc_as_str(r_doc); + if lbl != str { + fail fmt!("Expected label %s but found %s", lbl, str); + } + } + } + } + + fn next_doc(exp_tag: EbmlSerializerTag) -> Doc { + debug!(". next_doc(exp_tag=%?)", exp_tag); + if self.pos >= self.parent.end { + fail ~"no more documents in current node!"; + } + let TaggedDoc { tag: r_tag, doc: r_doc } = + doc_at(self.parent.data, self.pos); + debug!("self.parent=%?-%? self.pos=%? r_tag=%? r_doc=%?-%?", + copy self.parent.start, copy self.parent.end, + copy self.pos, r_tag, r_doc.start, r_doc.end); + if r_tag != (exp_tag as uint) { + fail fmt!("expected EMBL doc with tag %? but found tag %?", + exp_tag, r_tag); + } + if r_doc.end > self.parent.end { + fail fmt!("invalid EBML, child extends to 0x%x, parent to 0x%x", + r_doc.end, self.parent.end); + } + self.pos = r_doc.end; + r_doc + } + + fn push_doc(d: Doc, f: fn() -> T) -> T{ + let old_parent = self.parent; + let old_pos = self.pos; + self.parent = d; + self.pos = d.start; + let r = f(); + self.parent = old_parent; + self.pos = old_pos; + move r + } + + fn _next_uint(exp_tag: EbmlSerializerTag) -> uint { + let r = doc_as_u32(self.next_doc(exp_tag)); + debug!("_next_uint exp_tag=%? result=%?", exp_tag, r); + r as uint + } +} + +impl Deserializer { + fn read_opaque(&self, op: fn(Doc) -> R) -> R { + do self.push_doc(self.next_doc(EsOpaque)) { + op(copy self.parent) + } + } +} + +impl Deserializer: serialization2::Deserializer { + fn read_nil(&self) -> () { () } + + fn read_u64(&self) -> u64 { doc_as_u64(self.next_doc(EsU64)) } + fn read_u32(&self) -> u32 { doc_as_u32(self.next_doc(EsU32)) } + fn read_u16(&self) -> u16 { doc_as_u16(self.next_doc(EsU16)) } + fn read_u8 (&self) -> u8 { doc_as_u8 (self.next_doc(EsU8 )) } + fn read_uint(&self) -> uint { + let v = doc_as_u64(self.next_doc(EsUint)); + if v > (core::uint::max_value as u64) { + fail fmt!("uint %? too large for this architecture", v); + } + v as uint + } + + fn read_i64(&self) -> i64 { doc_as_u64(self.next_doc(EsI64)) as i64 } + fn read_i32(&self) -> i32 { doc_as_u32(self.next_doc(EsI32)) as i32 } + fn read_i16(&self) -> i16 { doc_as_u16(self.next_doc(EsI16)) as i16 } + fn read_i8 (&self) -> i8 { doc_as_u8 (self.next_doc(EsI8 )) as i8 } + fn read_int(&self) -> int { + let v = doc_as_u64(self.next_doc(EsInt)) as i64; + if v > (int::max_value as i64) || v < (int::min_value as i64) { + fail fmt!("int %? out of range for this architecture", v); + } + v as int + } + + fn read_bool(&self) -> bool { doc_as_u8(self.next_doc(EsBool)) as bool } + + fn read_f64(&self) -> f64 { fail ~"read_f64()"; } + fn read_f32(&self) -> f32 { fail ~"read_f32()"; } + fn read_float(&self) -> float { fail ~"read_float()"; } + + fn read_str(&self) -> ~str { doc_as_str(self.next_doc(EsStr)) } + + // Compound types: + fn read_enum(&self, name: ~str, f: fn() -> T) -> T { + debug!("read_enum(%s)", name); + self._check_label(name); + self.push_doc(self.next_doc(EsEnum), f) + } + + fn read_enum_variant(&self, f: fn(uint) -> T) -> T { + debug!("read_enum_variant()"); + let idx = self._next_uint(EsEnumVid); + debug!(" idx=%u", idx); + do self.push_doc(self.next_doc(EsEnumBody)) { + f(idx) + } + } + + fn read_enum_variant_arg(&self, idx: uint, f: fn() -> T) -> T { + debug!("read_enum_variant_arg(idx=%u)", idx); + f() + } + + fn read_vec(&self, f: fn(uint) -> T) -> T { + debug!("read_vec()"); + do self.push_doc(self.next_doc(EsVec)) { + let len = self._next_uint(EsVecLen); + debug!(" len=%u", len); + f(len) + } + } + + fn read_vec_elt(&self, idx: uint, f: fn() -> T) -> T { + debug!("read_vec_elt(idx=%u)", idx); + self.push_doc(self.next_doc(EsVecElt), f) + } + + fn read_box(&self, f: fn() -> T) -> T { + debug!("read_box()"); + f() + } + + fn read_uniq(&self, f: fn() -> T) -> T { + debug!("read_uniq()"); + f() + } + + fn read_rec(&self, f: fn() -> T) -> T { + debug!("read_rec()"); + f() + } + + fn read_rec_field(&self, f_name: ~str, f_idx: uint, + f: fn() -> T) -> T { + debug!("read_rec_field(%s, idx=%u)", f_name, f_idx); + self._check_label(f_name); + f() + } + + fn read_tup(&self, sz: uint, f: fn() -> T) -> T { + debug!("read_tup(sz=%u)", sz); + f() + } + + fn read_tup_elt(&self, idx: uint, f: fn() -> T) -> T { + debug!("read_tup_elt(idx=%u)", idx); + f() + } +} + + +// ___________________________________________________________________________ +// Testing + +#[cfg(test)] +mod tests { + #[test] + fn test_option_int() { + fn test_v(v: Option) { + debug!("v == %?", v); + let bytes = do io::with_bytes_writer |wr| { + let ebml_w = Serializer(wr); + v.serialize(&ebml_w) + }; + let ebml_doc = Doc(@bytes); + let deser = Deserializer(ebml_doc); + let v1 = serialization2::deserialize(&deser); + debug!("v1 == %?", v1); + assert v == v1; + } + + test_v(Some(22)); + test_v(None); + test_v(Some(3)); + } +} diff --git a/src/libstd/prettyprint2.rs b/src/libstd/prettyprint2.rs new file mode 100644 index 000000000000..c0e76662bcb0 --- /dev/null +++ b/src/libstd/prettyprint2.rs @@ -0,0 +1,142 @@ +#[forbid(deprecated_mode)]; +#[forbid(deprecated_pattern)]; + +use io::Writer; +use io::WriterUtil; +use serialization2; + +struct Serializer { + wr: io::Writer, +} + +fn Serializer(wr: io::Writer) -> Serializer { + Serializer { wr: wr } +} + +impl Serializer: serialization2::Serializer { + fn emit_nil(&self) { + self.wr.write_str(~"()") + } + + fn emit_uint(&self, v: uint) { + self.wr.write_str(fmt!("%?u", v)); + } + + fn emit_u64(&self, v: u64) { + self.wr.write_str(fmt!("%?_u64", v)); + } + + fn emit_u32(&self, v: u32) { + self.wr.write_str(fmt!("%?_u32", v)); + } + + fn emit_u16(&self, v: u16) { + self.wr.write_str(fmt!("%?_u16", v)); + } + + fn emit_u8(&self, v: u8) { + self.wr.write_str(fmt!("%?_u8", v)); + } + + fn emit_int(&self, v: int) { + self.wr.write_str(fmt!("%?", v)); + } + + fn emit_i64(&self, v: i64) { + self.wr.write_str(fmt!("%?_i64", v)); + } + + fn emit_i32(&self, v: i32) { + self.wr.write_str(fmt!("%?_i32", v)); + } + + fn emit_i16(&self, v: i16) { + self.wr.write_str(fmt!("%?_i16", v)); + } + + fn emit_i8(&self, v: i8) { + self.wr.write_str(fmt!("%?_i8", v)); + } + + fn emit_bool(&self, v: bool) { + self.wr.write_str(fmt!("%b", v)); + } + + fn emit_float(&self, v: float) { + self.wr.write_str(fmt!("%?_f", v)); + } + + fn emit_f64(&self, v: f64) { + self.wr.write_str(fmt!("%?_f64", v)); + } + + fn emit_f32(&self, v: f32) { + self.wr.write_str(fmt!("%?_f32", v)); + } + + fn emit_str(&self, v: &str) { + self.wr.write_str(fmt!("%?", v)); + } + + fn emit_enum(&self, _name: &str, f: fn()) { + f(); + } + + fn emit_enum_variant(&self, v_name: &str, _v_id: uint, sz: uint, + f: fn()) { + self.wr.write_str(v_name); + if sz > 0u { self.wr.write_str(~"("); } + f(); + if sz > 0u { self.wr.write_str(~")"); } + } + + fn emit_enum_variant_arg(&self, idx: uint, f: fn()) { + if idx > 0u { self.wr.write_str(~", "); } + f(); + } + + fn emit_vec(&self, _len: uint, f: fn()) { + self.wr.write_str(~"["); + f(); + self.wr.write_str(~"]"); + } + + fn emit_vec_elt(&self, idx: uint, f: fn()) { + if idx > 0u { self.wr.write_str(~", "); } + f(); + } + + fn emit_box(&self, f: fn()) { + self.wr.write_str(~"@"); + f(); + } + + fn emit_uniq(&self, f: fn()) { + self.wr.write_str(~"~"); + f(); + } + + fn emit_rec(&self, f: fn()) { + self.wr.write_str(~"{"); + f(); + self.wr.write_str(~"}"); + } + + fn emit_rec_field(&self, f_name: &str, f_idx: uint, f: fn()) { + if f_idx > 0u { self.wr.write_str(~", "); } + self.wr.write_str(f_name); + self.wr.write_str(~": "); + f(); + } + + fn emit_tup(&self, _sz: uint, f: fn()) { + self.wr.write_str(~"("); + f(); + self.wr.write_str(~")"); + } + + fn emit_tup_elt(&self, idx: uint, f: fn()) { + if idx > 0u { self.wr.write_str(~", "); } + f(); + } +} diff --git a/src/libstd/std.rc b/src/libstd/std.rc index 548ec1c31b46..c3b7c1793ec3 100644 --- a/src/libstd/std.rc +++ b/src/libstd/std.rc @@ -34,7 +34,9 @@ export sync, arc, comm; export bitv, deque, fun_treemap, list, map; export smallintmap, sort, treemap; export rope, arena, par; -export ebml, dbg, getopts, json, rand, sha1, term, time, prettyprint; +export ebml, ebml2; +export dbg, getopts, json, rand, sha1, term, time; +export prettyprint, prettyprint2; export test, tempfile, serialization, serialization2; export cmp; export base64; @@ -107,6 +109,8 @@ mod treemap; #[legacy_exports] mod ebml; #[legacy_exports] +mod ebml2; +#[legacy_exports] mod dbg; #[legacy_exports] mod getopts; @@ -125,6 +129,8 @@ mod time; #[legacy_exports] mod prettyprint; #[legacy_exports] +mod prettyprint2; +#[legacy_exports] mod arena; #[legacy_exports] mod par;