libcore: Add some visitor-based logging functionality
This commit is contained in:
parent
8299f3a447
commit
45f5f8ec45
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@ -61,6 +61,7 @@ export mutable;
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export flate;
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export unit;
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export uniq;
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export repr;
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// NDM seems to be necessary for resolve to work
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export option_iter;
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@ -224,10 +225,9 @@ mod rand;
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mod run;
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mod sys;
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mod unsafe;
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mod mutable;
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mod flate;
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mod repr;
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// Modules supporting compiler-generated code
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// Exported but not part of the public interface
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@ -0,0 +1,575 @@
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use dvec::DVec;
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use io::{Writer, WriterUtil};
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use libc::c_void;
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use sys::TypeDesc;
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use to_str::ToStr;
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use unsafe::transmute;
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use intrinsic::{TyDesc, TyVisitor};
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/// Helpers
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/// Helper function for alignment calculation.
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#[inline(always)]
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fn align(size: uint, align: uint) -> uint {
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((size + align) - 1) & !(align - 1)
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}
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struct VecRepr {
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box_header: (uint, uint, uint, uint),
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mut fill: uint,
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mut alloc: uint,
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data: u8
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}
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struct BoxRepr {
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ref_count: uint,
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type_desc: *TyDesc,
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prev: *BoxRepr,
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next: *BoxRepr,
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data: u8
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}
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trait EscapedCharWriter {
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fn write_escaped_char(ch: char);
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}
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impl Writer : EscapedCharWriter {
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fn write_escaped_char(ch: char) {
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match ch {
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'\t' => self.write_str("\\t"),
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'\r' => self.write_str("\\r"),
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'\n' => self.write_str("\\n"),
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'\\' => self.write_str("\\\\"),
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'\'' => self.write_str("\\'"),
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'"' => self.write_str("\\\""),
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'\x20'..'\x7e' => self.write_char(ch),
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_ => {
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// XXX: This is inefficient because it requires a malloc.
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self.write_str(char::escape_unicode(ch))
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}
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}
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}
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}
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/// Representations
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trait Repr {
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fn write_repr(writer: @Writer);
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}
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impl () : Repr {
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fn write_repr(writer: @Writer) { writer.write_str("()"); }
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}
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impl bool : Repr {
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fn write_repr(writer: @Writer) {
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writer.write_str(if self { "true" } else { "false" })
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}
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}
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impl int : Repr {
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fn write_repr(writer: @Writer) { writer.write_int(self); }
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}
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impl i8 : Repr {
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fn write_repr(writer: @Writer) { writer.write_int(self as int); }
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}
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impl i16 : Repr {
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fn write_repr(writer: @Writer) { writer.write_int(self as int); }
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}
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impl i32 : Repr {
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fn write_repr(writer: @Writer) { writer.write_int(self as int); }
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}
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impl i64 : Repr {
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// XXX: This can lose precision.
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fn write_repr(writer: @Writer) { writer.write_int(self as int); }
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}
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impl uint : Repr {
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fn write_repr(writer: @Writer) { writer.write_uint(self); }
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}
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impl u8 : Repr {
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fn write_repr(writer: @Writer) { writer.write_uint(self as uint); }
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}
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impl u16 : Repr {
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fn write_repr(writer: @Writer) { writer.write_uint(self as uint); }
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}
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impl u32 : Repr {
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fn write_repr(writer: @Writer) { writer.write_uint(self as uint); }
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}
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impl u64 : Repr {
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// XXX: This can lose precision.
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fn write_repr(writer: @Writer) { writer.write_uint(self as uint); }
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}
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impl float : Repr {
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// XXX: This mallocs.
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fn write_repr(writer: @Writer) { writer.write_str(self.to_str()); }
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}
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impl f32 : Repr {
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// XXX: This mallocs.
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fn write_repr(writer: @Writer) { writer.write_str(self.to_str()); }
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}
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impl f64 : Repr {
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// XXX: This mallocs.
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fn write_repr(writer: @Writer) { writer.write_str(self.to_str()); }
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}
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impl char : Repr {
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fn write_repr(writer: @Writer) { writer.write_char(self); }
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}
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/// XXX: This should not use a boxed writer!
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struct ReprPrinter {
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mut ptr: *c_void,
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writer: @Writer, // XXX: This should not use a boxed trait.
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mut skip: bool,
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enum_stack: DVec<*c_void>
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}
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/// FIXME (issue #3462): This is horrible.
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struct ReprPrinterWrapper {
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printer: @ReprPrinter
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}
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impl ReprPrinter {
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#[inline(always)]
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fn align(n: uint) {
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unsafe {
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self.ptr = transmute(align(self.ptr as uint, n));
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}
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}
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#[inline(always)]
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fn bump(n: uint) {
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unsafe {
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self.ptr = transmute(self.ptr as uint + n);
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}
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}
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#[inline(always)]
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fn log_simple<T:Repr>() -> bool {
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unsafe {
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self.align(sys::min_align_of::<T>());
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let value_addr: &T = transmute(copy self.ptr);
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(*value_addr).write_repr(self.writer);
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self.bump(sys::size_of::<T>());
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true
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}
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}
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}
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impl ReprPrinterWrapper {
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fn visit_estr() -> bool {
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unsafe {
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self.printer.writer.write_char('"');
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let vec_repr_ptr: **VecRepr = transmute(copy self.printer.ptr);
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let vec_repr = *vec_repr_ptr;
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let data_ptr = ptr::to_unsafe_ptr(&(*vec_repr).data);
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let slice: &str = transmute((data_ptr, (*vec_repr).fill));
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do str::chars_iter(slice) |ch| {
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self.printer.writer.write_escaped_char(ch);
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}
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self.printer.writer.write_char('"');
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let ptr_size = sys::size_of::<*c_void>();
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self.printer.ptr = transmute(self.printer.ptr as uint + ptr_size);
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true
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}
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}
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fn visit_self_describing_heap_alloc(mtbl: uint) -> bool {
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unsafe {
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if mtbl != 1 { self.printer.writer.write_str("mut "); }
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let box_ptr: **BoxRepr = transmute(copy self.printer.ptr);
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let box = *box_ptr;
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self.printer.ptr = transmute(&(*box).data);
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intrinsic::visit_tydesc((*box).type_desc, self as @TyVisitor);
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let box_size = sys::size_of::<*BoxRepr>();
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self.printer.ptr = transmute(self.printer.ptr as uint + box_size);
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true
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}
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}
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fn visit_ptr_contents(mtbl: uint, inner: *TyDesc) -> bool {
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unsafe {
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if mtbl != 1 { self.printer.writer.write_str("mut "); }
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let data_ptr: **c_void = transmute(copy self.printer.ptr);
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if *data_ptr == ptr::null() {
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self.printer.writer.write_str("null");
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} else {
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self.printer.ptr = *data_ptr;
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intrinsic::visit_tydesc(inner, self as @TyVisitor);
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}
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let ptr_size = sys::size_of::<*c_void>();
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self.printer.ptr = transmute(self.printer.ptr as uint + ptr_size);
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true
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}
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}
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fn visit_evec(mtbl: uint, inner: *TyDesc) -> bool {
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unsafe {
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self.printer.writer.write_char('[');
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self.printer.align(sys::min_align_of::<*c_void>());
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let vec_repr_ptr: **VecRepr = transmute(copy self.printer.ptr);
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let old_ptr = self.printer.ptr as uint;
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let vec_repr: *VecRepr = *vec_repr_ptr;
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self.printer.ptr = transmute(&(*vec_repr).data);
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let end_ptr: *c_void = transmute(self.printer.ptr as uint +
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(*vec_repr).fill);
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let sys_tydesc: *TypeDesc = transmute(copy inner);
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let alignment = (*sys_tydesc).align;
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let mut first = true;
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loop {
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self.printer.align(alignment);
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if self.printer.ptr >= end_ptr { break; }
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if first {
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self.printer.writer.write_char(' ');
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if mtbl != 1 { self.printer.writer.write_str("mut "); }
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} else {
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self.printer.writer.write_str(", ");
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}
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intrinsic::visit_tydesc(inner, self as @TyVisitor);
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first = false;
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}
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if !first {
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self.printer.writer.write_char(' ');
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} else if mtbl != 1 {
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self.printer.writer.write_str("mut");
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}
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self.printer.writer.write_char(']');
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self.printer.ptr = transmute(old_ptr + sys::size_of::<int>());
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true
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}
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}
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}
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impl ReprPrinterWrapper : TyVisitor {
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fn visit_bot() -> bool {
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self.printer.bump(1);
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self.printer.writer.write_str("fail");
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true
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}
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fn visit_nil() -> bool { self.printer.log_simple::<()>() }
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fn visit_bool() -> bool { self.printer.log_simple::<bool>() }
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// Numbers
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fn visit_int() -> bool { self.printer.log_simple::<int>() }
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fn visit_i8() -> bool { self.printer.log_simple::<i8>() }
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fn visit_i16() -> bool { self.printer.log_simple::<i16>() }
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fn visit_i32() -> bool { self.printer.log_simple::<i32>() }
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fn visit_i64() -> bool { self.printer.log_simple::<i64>() }
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fn visit_uint() -> bool { self.printer.log_simple::<uint>() }
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fn visit_u8() -> bool { self.printer.log_simple::<u8>() }
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fn visit_u16() -> bool { self.printer.log_simple::<u16>() }
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fn visit_u32() -> bool { self.printer.log_simple::<u32>() }
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fn visit_u64() -> bool { self.printer.log_simple::<u64>() }
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fn visit_float() -> bool { self.printer.log_simple::<float>() }
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fn visit_f32() -> bool { self.printer.log_simple::<f32>() }
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fn visit_f64() -> bool { self.printer.log_simple::<f64>() }
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fn visit_char() -> bool { self.printer.log_simple::<char>() }
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fn visit_str() -> bool { true }
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// Strings
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fn visit_estr_box() -> bool {
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self.printer.writer.write_char('@');
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self.visit_estr()
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}
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fn visit_estr_uniq() -> bool {
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self.printer.writer.write_char('~');
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self.visit_estr()
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}
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fn visit_estr_slice() -> bool {
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unsafe {
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self.printer.writer.write_char('"');
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let slice_ptr: *&str = transmute(copy self.printer.ptr);
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let slice = *slice_ptr;
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do str::chars_iter(slice) |ch| {
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self.printer.writer.write_escaped_char(ch);
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}
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self.printer.writer.write_char('"');
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let slice_sz = sys::size_of::<(*char,uint)>();
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self.printer.ptr = transmute(self.printer.ptr as uint + slice_sz);
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true
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}
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}
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fn visit_estr_fixed(_n: uint, _sz: uint, _align: uint) -> bool { true }
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// Pointers
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fn visit_box(mtbl: uint, _inner: *TyDesc) -> bool {
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self.printer.writer.write_char('@');
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self.visit_self_describing_heap_alloc(mtbl)
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}
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fn visit_uniq(mtbl: uint, _inner: *TyDesc) -> bool {
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self.printer.writer.write_char('~');
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self.visit_self_describing_heap_alloc(mtbl)
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}
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fn visit_ptr(mtbl: uint, inner: *TyDesc) -> bool {
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self.printer.writer.write_char('*');
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self.visit_ptr_contents(mtbl, inner)
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}
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fn visit_rptr(mtbl: uint, inner: *TyDesc) -> bool {
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self.printer.writer.write_char('&');
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self.visit_ptr_contents(mtbl, inner)
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}
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// Vectors
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fn visit_vec(_mtbl: uint, _inner: *TyDesc) -> bool { true }
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fn visit_unboxed_vec(_mtbl: uint, _inner: *TyDesc) -> bool { true }
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fn visit_evec_box(mtbl: uint, inner: *TyDesc) -> bool {
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self.printer.writer.write_char('@');
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self.visit_evec(mtbl, inner)
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}
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fn visit_evec_uniq(mtbl: uint, inner: *TyDesc) -> bool {
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self.printer.writer.write_char('~');
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self.visit_evec(mtbl, inner)
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}
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fn visit_evec_slice(mtbl: uint, inner: *TyDesc) -> bool {
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unsafe {
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self.printer.writer.write_str("&[");
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self.printer.align(sys::min_align_of::<(*c_void,uint)>());
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let slice_ptr: *(*c_void,uint) = transmute(copy self.printer.ptr);
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let (data, fill) = *slice_ptr;
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self.printer.ptr = data;
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let end_ptr: *c_void = transmute(self.printer.ptr as uint + fill);
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let sys_tydesc: *TypeDesc = transmute(copy inner);
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let alignment = (*sys_tydesc).align;
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let mut first = true;
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loop {
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self.printer.align(alignment);
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if self.printer.ptr >= end_ptr { break; }
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if first {
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self.printer.writer.write_char(' ');
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if mtbl != 1 { self.printer.writer.write_str("mut "); }
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} else {
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self.printer.writer.write_str(", ");
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}
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intrinsic::visit_tydesc(inner, self as @TyVisitor);
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first = false;
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}
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if !first {
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self.printer.writer.write_char(' ');
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} else if mtbl != 1 {
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self.printer.writer.write_str("mut");
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}
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self.printer.writer.write_char(']');
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let slice_size = sys::size_of::<(uint, *c_void)>();
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self.printer.ptr = transmute(slice_ptr as uint + slice_size);
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true
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}
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}
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fn visit_evec_fixed(n: uint, sz: uint, align: uint, mtbl: uint,
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inner: *TyDesc) -> bool {
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unsafe {
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self.printer.writer.write_char('[');
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self.printer.align(align);
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let end_ptr: *c_void = transmute(self.printer.ptr as uint + sz);
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for uint::range(0, n) |i| {
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self.printer.align(align);
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if i == 0 {
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self.printer.writer.write_char(' ');
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if mtbl != 1 { self.printer.writer.write_str("mut "); }
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} else {
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self.printer.writer.write_str(", ");
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}
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intrinsic::visit_tydesc(inner, self as @TyVisitor);
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}
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if n > 0 {
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self.printer.writer.write_char(' ');
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} else if mtbl != 1 {
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self.printer.writer.write_str("mut");
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}
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self.printer.writer.write_char(']');
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self.printer.ptr = end_ptr;
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true
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}
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}
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// Records
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fn visit_enter_rec(_n_fields: uint, _sz: uint, align: uint) -> bool {
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self.printer.writer.write_char('{');
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self.printer.align(align);
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true
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}
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fn visit_rec_field(i: uint, name: &str, mtbl: uint, inner: *TyDesc) ->
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bool {
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if i != 0 {
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self.printer.writer.write_str(", ");
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} else {
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self.printer.writer.write_char(' ');
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}
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if mtbl != 1 { self.printer.writer.write_str("mut "); }
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self.printer.writer.write_str(name);
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self.printer.writer.write_str(": ");
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intrinsic::visit_tydesc(inner, self as @TyVisitor);
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true
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}
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fn visit_leave_rec(n_fields: uint, _sz: uint, _align: uint) -> bool {
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if n_fields > 0 { self.printer.writer.write_char(' '); }
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self.printer.writer.write_char('}');
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true
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}
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// Structs
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fn visit_enter_class(_n_fields: uint, _sz: uint, align: uint) -> bool {
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self.printer.writer.write_char('{');
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self.printer.align(align);
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true
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}
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fn visit_class_field(i: uint, name: &str, mtbl: uint, inner: *TyDesc) ->
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bool {
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if i != 0 {
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self.printer.writer.write_str(", ");
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} else {
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self.printer.writer.write_char(' ');
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}
|
||||
if mtbl != 1 { self.printer.writer.write_str("mut "); }
|
||||
self.printer.writer.write_str(name);
|
||||
self.printer.writer.write_str(": ");
|
||||
intrinsic::visit_tydesc(inner, self as @TyVisitor);
|
||||
true
|
||||
}
|
||||
fn visit_leave_class(n_fields: uint, _sz: uint, _align: uint) -> bool {
|
||||
if n_fields > 0 { self.printer.writer.write_char(' '); }
|
||||
self.printer.writer.write_char('}');
|
||||
true
|
||||
}
|
||||
|
||||
// Tuples
|
||||
|
||||
fn visit_enter_tup(_n_fields: uint, _sz: uint, align: uint) -> bool {
|
||||
self.printer.writer.write_char('(');
|
||||
self.printer.align(align);
|
||||
true
|
||||
}
|
||||
fn visit_tup_field(i: uint, inner: *TyDesc) -> bool {
|
||||
if i != 0 { self.printer.writer.write_str(", "); }
|
||||
intrinsic::visit_tydesc(inner, self as @TyVisitor);
|
||||
true
|
||||
}
|
||||
fn visit_leave_tup(_n_fields: uint, _sz: uint, _align: uint) -> bool {
|
||||
self.printer.writer.write_char(')');
|
||||
true
|
||||
}
|
||||
|
||||
// Enums
|
||||
|
||||
fn visit_enter_enum(_n_variants: uint, sz: uint, align: uint) -> bool {
|
||||
unsafe {
|
||||
self.printer.align(align);
|
||||
|
||||
// Write in the location of the end of this enum.
|
||||
let new_pos = self.printer.ptr as uint + sz;
|
||||
self.printer.enum_stack.push(transmute(new_pos));
|
||||
|
||||
true
|
||||
}
|
||||
}
|
||||
|
||||
fn visit_enter_enum_variant(_variant: uint,
|
||||
disr_val: int,
|
||||
_n_fields: uint,
|
||||
name: &str) -> bool {
|
||||
unsafe {
|
||||
let disr_ptr = self.printer.ptr as *int;
|
||||
if *disr_ptr == disr_val {
|
||||
self.printer.skip = false; // Don't skip this variant.
|
||||
self.printer.writer.write_str(name);
|
||||
self.printer.bump(sys::size_of::<int>());
|
||||
} else {
|
||||
self.printer.skip = true; // Skip this variant.
|
||||
}
|
||||
true
|
||||
}
|
||||
}
|
||||
|
||||
fn visit_enum_variant_field(i: uint, inner: *TyDesc) -> bool {
|
||||
if !self.printer.skip {
|
||||
if i == 0 {
|
||||
self.printer.writer.write_char('(');
|
||||
} else {
|
||||
self.printer.writer.write_str(", ");
|
||||
}
|
||||
|
||||
intrinsic::visit_tydesc(inner, self as @TyVisitor);
|
||||
}
|
||||
true
|
||||
}
|
||||
|
||||
fn visit_leave_enum_variant(_variant: uint,
|
||||
_disr_val: int,
|
||||
n_fields: uint,
|
||||
_name: &str) -> bool {
|
||||
if !self.printer.skip && n_fields > 1 {
|
||||
self.printer.writer.write_char(')');
|
||||
}
|
||||
true
|
||||
}
|
||||
|
||||
fn visit_leave_enum(_n_variants: uint, _sz: uint, _align: uint) -> bool {
|
||||
self.printer.ptr = self.printer.enum_stack.pop();
|
||||
true
|
||||
}
|
||||
|
||||
// Functions
|
||||
|
||||
fn visit_enter_fn(_purity: uint, proto: uint,
|
||||
_n_inputs: uint, _retstyle: uint) -> bool {
|
||||
self.printer.align(sys::min_align_of::<(uint,uint)>());
|
||||
match proto {
|
||||
2u => self.printer.writer.write_char('~'),
|
||||
3u => self.printer.writer.write_char('@'),
|
||||
4u => self.printer.writer.write_char('&'),
|
||||
_ => {}
|
||||
}
|
||||
self.printer.writer.write_str("fn");
|
||||
true
|
||||
}
|
||||
|
||||
fn visit_fn_input(_i: uint, _mode: uint, _inner: *TyDesc) -> bool { true }
|
||||
fn visit_fn_output(_retstyle: uint, _inner: *TyDesc) -> bool { true }
|
||||
fn visit_leave_fn(_purity: uint, _proto: uint,
|
||||
_n_inputs: uint, _retstyle: uint) -> bool { true }
|
||||
|
||||
// Others
|
||||
|
||||
fn visit_trait() -> bool { self.printer.writer.write_str("@trait"); true }
|
||||
fn visit_var() -> bool { true }
|
||||
fn visit_var_integral() -> bool { true }
|
||||
fn visit_param(_i: uint) -> bool { true }
|
||||
fn visit_self() -> bool { true }
|
||||
fn visit_type() -> bool { true }
|
||||
fn visit_opaque_box() -> bool {
|
||||
self.printer.writer.write_char('@');
|
||||
self.visit_self_describing_heap_alloc(1)
|
||||
}
|
||||
fn visit_constr(_inner: *TyDesc) -> bool { true }
|
||||
fn visit_closure_ptr(_ck: uint) -> bool { true }
|
||||
}
|
||||
|
||||
pub fn write_repr<T>(writer: @Writer, object: &T) {
|
||||
unsafe {
|
||||
let ptr = ptr::to_unsafe_ptr(object) as *c_void;
|
||||
let tydesc = sys::get_type_desc::<T>();
|
||||
let tydesc = unsafe::transmute(tydesc);
|
||||
|
||||
let repr_printer = @ReprPrinter {
|
||||
ptr: ptr,
|
||||
writer: writer,
|
||||
skip: false,
|
||||
enum_stack: DVec()
|
||||
};
|
||||
|
||||
let wrapper = ReprPrinterWrapper { printer: repr_printer };
|
||||
intrinsic::visit_tydesc(tydesc, wrapper as @TyVisitor);
|
||||
}
|
||||
}
|
||||
|
|
@ -37,6 +37,12 @@ impl u64: ToStr {
|
|||
impl float: ToStr {
|
||||
fn to_str() -> ~str { float::to_str(self, 4u) }
|
||||
}
|
||||
impl f32: ToStr {
|
||||
fn to_str() -> ~str { float::to_str(self as float, 4u) }
|
||||
}
|
||||
impl f64: ToStr {
|
||||
fn to_str() -> ~str { float::to_str(self as float, 4u) }
|
||||
}
|
||||
impl bool: ToStr {
|
||||
fn to_str() -> ~str { bool::to_str(self) }
|
||||
}
|
||||
|
|
Loading…
Reference in New Issue