Refactor rustc_trans::save

Move rustc_trans::*Data to own module
Add new data to rustc_trans::save
Create a Dump trait implemented by structs that dump save analysis data
Split dump_csv into a DumpVisitor and a CsvDumper

6 files changed, 1459 insertions, 1153 deletions

diff --git a/src/librustc_trans/save/csv_dumper.rs b/src/librustc_trans/save/csv_dumper.rs
new file mode 100644
index 00000000000..2a5b7d9567b
--- /dev/null
+++ b/src/librustc_trans/save/csv_dumper.rs
@@ -0,0 +1,566 @@
+// Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+use std::io::Write;
+
+use middle::def_id::{DefId, DefIndex};
+use syntax::codemap::Span;
+
+use super::data::*;
+use super::dump::Dump;
+use super::span_utils::SpanUtils;
+
+pub struct CsvDumper<'a, 'b, W: 'b> {
+    output: &'b mut W,
+    dump_spans: bool,
+    span: SpanUtils<'a>
+}
+
+impl<'a, 'b, W: Write> CsvDumper<'a, 'b, W> {
+    pub fn new(writer: &'b mut W, span: SpanUtils<'a>) -> CsvDumper<'a, 'b, W> {
+        CsvDumper { output: writer, dump_spans: false, span: span }
+    }
+
+    fn record(&mut self, kind: &str, span: Span, values: String) {
+        let span_str = self.span.extent_str(span);
+        if let Err(_) = write!(self.output, "{},{}{}\n", kind, span_str, values) {
+            error!("Error writing output");
+        }
+    }
+
+    fn record_raw(&mut self, info: &str) {
+        if let Err(_) = write!(self.output, "{}", info) {
+            error!("Error writing output '{}'", info);
+        }
+    }
+
+    pub fn dump_span(&mut self, kind: &str, span: Span) {
+        assert!(self.dump_spans);
+        let result = format!("span,kind,{},{},text,\"{}\"\n",
+                             kind,
+                             self.span.extent_str(span),
+                             escape(self.span.snippet(span)));
+        self.record_raw(&result);
+    }
+}
+
+impl<'a, 'b, W: Write + 'b> Dump for CsvDumper<'a, 'b, W> {
+    fn crate_prelude(&mut self, span: Span, data: CratePreludeData) {
+        let crate_root = data.crate_root.unwrap_or("<no source>".to_owned());
+
+        let values = make_values_str(&[
+            ("name", &data.crate_name),
+            ("crate_root", &crate_root)
+        ]);
+
+        self.record("crate", span, values);
+
+        for c in data.external_crates {
+            let num = c.num.to_string();
+            let lo_loc = self.span.sess.codemap().lookup_char_pos(span.lo);
+            let file_name = SpanUtils::make_path_string(&lo_loc.file.name);
+            let values = make_values_str(&[
+                ("name", &c.name),
+                ("crate", &num),
+                ("file_name", &file_name)
+            ]);
+
+            self.record_raw(&format!("external_crate{}\n", values));
+        }
+
+        self.record_raw("end_external_crates\n");
+    }
+
+    fn enum_data(&mut self, span: Span, data: EnumData) {
+        if self.dump_spans {
+            self.dump_span("enum", span);
+            return;
+        }
+
+        let id = data.id.to_string();
+        let scope = data.scope.to_string();
+        let values = make_values_str(&[
+            ("id", &id),
+            ("qualname", &data.qualname),
+            ("scopeid", &scope),
+            ("value", &data.value)
+        ]);
+
+        self.record("enum", data.span, values);
+    }
+
+    fn extern_crate(&mut self, span: Span, data: ExternCrateData) {
+        if self.dump_spans {
+            self.dump_span("extern_crate", span);
+            return;
+        }
+
+        let id = data.id.to_string();
+        let crate_num = data.crate_num.to_string();
+        let scope = data.scope.to_string();
+        let values = make_values_str(&[
+            ("id", &id),
+            ("name", &data.name),
+            ("location", &data.location),
+            ("crate", &crate_num),
+            ("scopeid", &scope)
+        ]);
+
+        self.record("extern_crate", data.span, values);
+    }
+
+    fn impl_data(&mut self, span: Span, data: ImplData) {
+        if self.dump_spans {
+            self.dump_span("impl", span);
+            return;
+        }
+
+        let self_ref = data.self_ref.unwrap_or(null_def_id());
+        let trait_ref = data.trait_ref.unwrap_or(null_def_id());
+
+        let id = data.id.to_string();
+        let ref_id = self_ref.index.as_usize().to_string();
+        let ref_id_crate = self_ref.krate.to_string();
+        let trait_id = trait_ref.index.as_usize().to_string();
+        let trait_id_crate = trait_ref.krate.to_string();
+        let scope = data.scope.to_string();
+        let values = make_values_str(&[
+            ("id", &id),
+            ("refid", &ref_id),
+            ("refidcrate", &ref_id_crate),
+            ("traitid", &trait_id),
+            ("traitidcrate", &trait_id_crate),
+            ("scopeid", &scope)
+        ]);
+
+        self.record("impl", data.span, values);
+    }
+
+    fn inheritance(&mut self, data: InheritanceData) {
+       if self.dump_spans {
+           return;
+       }
+
+       let base_id = data.base_id.index.as_usize().to_string();
+       let base_crate = data.base_id.krate.to_string();
+       let deriv_id = data.deriv_id.to_string();
+       let deriv_crate = 0.to_string();
+       let values = make_values_str(&[
+           ("base", &base_id),
+           ("basecrate", &base_crate),
+           ("derived", &deriv_id),
+           ("derivedcrate", &deriv_crate)
+       ]);
+
+       self.record("inheritance", data.span, values);
+    }
+
+    fn function(&mut self, span: Span, data: FunctionData) {
+        if self.dump_spans {
+            self.dump_span("function", span);
+            return;
+        }
+
+        let (decl_id, decl_crate) = match data.declaration {
+            Some(id) => (id.index.as_usize().to_string(), id.krate.to_string()),
+            None => (String::new(), String::new())
+        };
+
+        let id = data.id.to_string();
+        let scope = data.scope.to_string();
+        let values = make_values_str(&[
+            ("id", &id),
+            ("qualname", &data.qualname),
+            ("declid", &decl_id),
+            ("declidcrate", &decl_crate),
+            ("scopeid", &scope)
+        ]);
+
+        self.record("function", data.span, values);
+    }
+
+    fn function_ref(&mut self, span: Span, data: FunctionRefData) {
+        if self.dump_spans {
+            self.dump_span("fn_ref", span);
+            return;
+        }
+
+        let ref_id = data.ref_id.index.as_usize().to_string();
+        let ref_crate = data.ref_id.krate.to_string();
+        let scope = data.scope.to_string();
+        let values = make_values_str(&[
+            ("refid", &ref_id),
+            ("refidcrate", &ref_crate),
+            ("qualname", ""),
+            ("scopeid", &scope)
+        ]);
+
+        self.record("fn_ref", data.span, values);
+    }
+
+    fn function_call(&mut self, span: Span, data: FunctionCallData) {
+        if self.dump_spans {
+            self.dump_span("fn_call", span);
+            return;
+        }
+
+        let ref_id = data.ref_id.index.as_usize().to_string();
+        let ref_crate = data.ref_id.krate.to_string();
+        let qualname = String::new();
+        let scope = data.scope.to_string();
+        let values = make_values_str(&[
+            ("refid", &ref_id),
+            ("refidcrate", &ref_crate),
+            ("qualname", &qualname),
+            ("scopeid", &scope)
+        ]);
+
+        self.record("fn_call", data.span, values);
+    }
+
+    fn method(&mut self, span: Span, data: MethodData) {
+        if self.dump_spans {
+            self.dump_span("method_decl", span);
+            return;
+        }
+
+        let id = data.id.to_string();
+        let scope = data.scope.to_string();
+        let values = make_values_str(&[
+            ("id", &id),
+            ("qualname", &data.qualname),
+            ("scopeid", &scope)
+        ]);
+
+        self.record("method_decl", span, values);
+    }
+
+    fn method_call(&mut self, span: Span, data: MethodCallData) {
+        if self.dump_spans {
+            self.dump_span("method_call", span);
+            return;
+        }
+
+        let (dcn, dck) = match data.decl_id {
+            Some(declid) => (declid.index.as_usize().to_string(), declid.krate.to_string()),
+            None => (String::new(), String::new()),
+        };
+
+        let ref_id = data.ref_id.unwrap_or(null_def_id());
+
+        let def_id = ref_id.index.as_usize().to_string();
+        let def_crate = ref_id.krate.to_string();
+        let scope = data.scope.to_string();
+        let values = make_values_str(&[
+            ("refid", &def_id),
+            ("refidcrate", &def_crate),
+            ("declid", &dcn),
+            ("declidcrate", &dck),
+            ("scopeid", &scope)
+        ]);
+
+        self.record("method_call", data.span, values);
+    }
+
+    fn macro_data(&mut self, span: Span, data: MacroData) {
+        if self.dump_spans {
+            self.dump_span("macro", span);
+            return;
+        }
+
+        let values = make_values_str(&[
+            ("name", &data.name),
+            ("qualname", &data.qualname)
+        ]);
+
+        self.record("macro", data.span, values);
+    }
+
+    fn macro_use(&mut self, span: Span, data: MacroUseData) {
+        if self.dump_spans {
+            self.dump_span("macro_use", span);
+            return;
+        }
+
+        let scope = data.scope.to_string();
+        let values = make_values_str(&[
+            ("callee_name", &data.name),
+            ("qualname", &data.qualname),
+            ("scopeid", &scope)
+        ]);
+
+        self.record("macro_use", data.span, values);
+    }
+
+    fn mod_data(&mut self, data: ModData) {
+        if self.dump_spans {
+            return;
+        }
+
+        let id = data.id.to_string();
+        let scope = data.scope.to_string();
+        let values = make_values_str(&[
+            ("id", &id),
+            ("qualname", &data.qualname),
+            ("scopeid", &scope),
+            ("def_file", &data.filename)
+        ]);
+
+        self.record("module", data.span, values);
+    }
+
+    fn mod_ref(&mut self, span: Span, data: ModRefData) {
+        if self.dump_spans {
+            self.dump_span("mod_ref", span);
+            return;
+        }
+
+        let (ref_id, ref_crate) = match data.ref_id {
+            Some(rid) => (rid.index.as_usize().to_string(), rid.krate.to_string()),
+            None => (0.to_string(), 0.to_string())
+        };
+
+        let scope = data.scope.to_string();
+        let values = make_values_str(&[
+            ("refid", &ref_id),
+            ("refidcrate", &ref_crate),
+            ("qualname", &data.qualname),
+            ("scopeid", &scope)
+        ]);
+
+        self.record("mod_ref", data.span, values);
+    }
+
+    fn struct_data(&mut self, span: Span, data: StructData) {
+        if self.dump_spans {
+            self.dump_span("struct", span);
+            return;
+        }
+
+        let id = data.id.to_string();
+        let ctor_id = data.ctor_id.to_string();
+        let scope = data.scope.to_string();
+        let values = make_values_str(&[
+            ("id", &id),
+            ("ctor_id", &ctor_id),
+            ("qualname", &data.qualname),
+            ("scopeid", &scope),
+            ("value", &data.value)
+        ]);
+
+        self.record("struct", data.span, values);
+    }
+
+    fn struct_variant(&mut self, span: Span, data: StructVariantData) {
+        if self.dump_spans {
+            self.dump_span("variant_struct", span);
+            return;
+        }
+
+        let id = data.id.to_string();
+        let scope = data.scope.to_string();
+        let values = make_values_str(&[
+            ("id", &id),
+            ("ctor_id", &id),
+            ("qualname", &data.qualname),
+            ("type", &data.type_value),
+            ("value", &data.value),
+            ("scopeid", &scope)
+        ]);
+
+        self.record("variant_struct", data.span, values);
+    }
+
+    fn trait_data(&mut self, span: Span, data: TraitData) {
+        if self.dump_spans {
+            self.dump_span("trait", span);
+            return;
+        }
+
+        let id = data.id.to_string();
+        let scope = data.scope.to_string();
+        let values = make_values_str(&[
+            ("id", &id),
+            ("qualname", &data.qualname),
+            ("scopeid", &scope),
+            ("value", &data.value)
+        ]);
+
+        self.record("trait", data.span, values);
+    }
+
+    fn tuple_variant(&mut self, span: Span, data: TupleVariantData) {
+        if self.dump_spans {
+            self.dump_span("variant", span);
+            return;
+        }
+
+        let id = data.id.to_string();
+        let scope = data.scope.to_string();
+        let values = make_values_str(&[
+            ("id", &id),
+            ("name", &data.name),
+            ("qualname", &data.qualname),
+            ("type", &data.type_value),
+            ("value", &data.value),
+            ("scopeid", &scope)
+        ]);
+
+        self.record("variant", data.span, values);
+    }
+
+    fn type_ref(&mut self, span: Span, data: TypeRefData) {
+        if self.dump_spans {
+            self.dump_span("type_ref", span);
+            return;
+        }
+
+        let (ref_id, ref_crate) = match data.ref_id {
+            Some(id) => (id.index.as_usize().to_string(), id.krate.to_string()),
+            None => (0.to_string(), 0.to_string())
+        };
+
+        let scope = data.scope.to_string();
+        let values = make_values_str(&[
+            ("refid", &ref_id),
+            ("refidcrate", &ref_crate),
+            ("qualname", &data.qualname),
+            ("scopeid", &scope)
+        ]);
+
+        self.record("type_ref", data.span, values);
+    }
+
+    fn typedef(&mut self, span: Span, data: TypedefData) {
+        if self.dump_spans {
+            self.dump_span("typedef", span);
+            return;
+        }
+
+        let id = data.id.to_string();
+        let values = make_values_str(&[
+            ("id", &id),
+            ("qualname", &data.qualname),
+            ("value", &data.value)
+        ]);
+
+        self.record("typedef", data.span, values);
+    }
+
+    fn use_data(&mut self, span: Span, data: UseData) {
+        if self.dump_spans {
+            self.dump_span("use_alias", span);
+            return;
+        }
+
+        let mod_id = data.mod_id.unwrap_or(null_def_id());
+
+        let id = data.id.to_string();
+        let ref_id = mod_id.index.as_usize().to_string();
+        let ref_crate = mod_id.krate.to_string();
+        let scope = data.scope.to_string();
+        let values = make_values_str(&[
+            ("id", &id),
+            ("refid", &ref_id),
+            ("refidcrate", &ref_crate),
+            ("name", &data.name),
+            ("scopeid", &scope)
+        ]);
+
+        self.record("use_alias", data.span, values);
+    }
+
+    fn use_glob(&mut self, span: Span, data: UseGlobData) {
+        if self.dump_spans {
+            self.dump_span("use_glob", span);
+            return;
+        }
+
+        let names = data.names.join(", ");
+
+        let id = data.id.to_string();
+        let scope = data.scope.to_string();
+        let values = make_values_str(&[
+            ("id", &id),
+            ("value", &names),
+            ("scopeid", &scope)
+        ]);
+
+        self.record("use_glob", data.span, values);
+    }
+
+    fn variable(&mut self, span: Span, data: VariableData) {
+        if self.dump_spans {
+            self.dump_span("variable", span);
+            return;
+        }
+
+        let id = data.id.to_string();
+        let scope = data.scope.to_string();
+        let values = make_values_str(&[
+            ("id", &id),
+            ("name", &data.name),
+            ("qualname", &data.qualname),
+            ("value", &data.value),
+            ("type", &data.type_value),
+            ("scopeid", &scope)
+        ]);
+
+        self.record("variable", data.span, values);
+    }
+
+    fn variable_ref(&mut self, span: Span, data: VariableRefData) {
+        if self.dump_spans {
+            self.dump_span("var_ref", span);
+            return;
+        }
+
+        let ref_id = data.ref_id.index.as_usize().to_string();
+        let ref_crate = data.ref_id.krate.to_string();
+        let scope = data.scope.to_string();
+        let values = make_values_str(&[
+            ("refid", &ref_id),
+            ("refidcrate", &ref_crate),
+            ("qualname", ""),
+            ("scopeid", &scope)
+        ]);
+
+        self.record("var_ref", data.span, values)
+    }
+}
+
+// Helper function to escape quotes in a string
+fn escape(s: String) -> String {
+    s.replace("\"", "\"\"")
+}
+
+fn make_values_str(pairs: &[(&'static str, &str)]) -> String {
+    let pairs = pairs.into_iter().map(|&(f, v)| {
+        // Never take more than 1020 chars
+        if v.len() > 1020 {
+            (f, &v[..1020])
+        } else {
+            (f, v)
+        }
+    });
+
+    let strs = pairs.map(|(f, v)| format!(",{},\"{}\"", f, escape(String::from(v))));
+    strs.fold(String::new(), |mut s, ss| {
+        s.push_str(&ss[..]);
+        s
+    })
+}
+
+fn null_def_id() -> DefId {
+    DefId {
+        krate: 0,
+        index: DefIndex::new(0),
+    }
+}
diff --git a/src/librustc_trans/save/data.rs b/src/librustc_trans/save/data.rs
new file mode 100644
index 00000000000..3eaaa3fc493
--- /dev/null
+++ b/src/librustc_trans/save/data.rs
@@ -0,0 +1,394 @@
+// Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+//! Structs representing the analysis data from a crate.
+//!
+//! The `Dump` trait can be used together with `DumpVisitor` in order to
+//! retrieve the data from a crate.
+
+use std::hash::Hasher;
+
+use middle::def_id::DefId;
+use middle::ty;
+use syntax::ast::{CrateNum, NodeId};
+use syntax::codemap::Span;
+
+#[macro_export]
+macro_rules! down_cast_data {
+    ($id:ident, $kind:ident, $this:ident, $sp:expr) => {
+        let $id = if let super::Data::$kind(data) = $id {
+            data
+        } else {
+            $this.sess.span_bug($sp, &format!("unexpected data kind: {:?}", $id));
+        }
+    };
+}
+
+pub struct CrateData {
+    pub name: String,
+    pub number: u32,
+}
+
+/// Data for any entity in the Rust language. The actual data contained varies
+/// with the kind of entity being queried. See the nested structs for details.
+#[derive(Debug)]
+pub enum Data {
+    /// Data for Enums.
+    EnumData(EnumData),
+    /// Data for extern crates.
+    ExternCrateData(ExternCrateData),
+    /// Data about a function call.
+    FunctionCallData(FunctionCallData),
+    /// Data for all kinds of functions and methods.
+    FunctionData(FunctionData),
+    /// Data about a function ref.
+    FunctionRefData(FunctionRefData),
+    /// Data for impls.
+    ImplData(ImplData2),
+    /// Data for trait inheritance.
+    InheritanceData(InheritanceData),
+    /// Data about a macro declaration.
+    MacroData(MacroData),
+    /// Data about a macro use.
+    MacroUseData(MacroUseData),
+    /// Data about a method call.
+    MethodCallData(MethodCallData),
+    /// Data for method declarations (methods with a body are treated as functions).
+    MethodData(MethodData),
+    /// Data for modules.
+    ModData(ModData),
+    /// Data for a reference to a module.
+    ModRefData(ModRefData),
+    /// Data for a struct declaration.
+    StructData(StructData),
+    /// Data for a struct variant.
+    StructVariantDat(StructVariantData),
+    /// Data for a trait declaration.
+    TraitData(TraitData),
+    /// Data for a tuple variant.
+    TupleVariantData(TupleVariantData),
+    /// Data for a typedef.
+    TypeDefData(TypedefData),
+    /// Data for a reference to a type or trait.
+    TypeRefData(TypeRefData),
+    /// Data for a use statement.
+    UseData(UseData),
+    /// Data for a global use statement.
+    UseGlobData(UseGlobData),
+    /// Data for local and global variables (consts and statics), and fields.
+    VariableData(VariableData),
+    /// Data for the use of some variable (e.g., the use of a local variable, which
+    /// will refere to that variables declaration).
+    VariableRefData(VariableRefData),
+}
+
+/// Data for the prelude of a crate.
+#[derive(Debug)]
+pub struct CratePreludeData {
+    pub crate_name: String,
+    pub crate_root: Option<String>,
+    pub external_crates: Vec<ExternalCrateData>
+}
+
+/// Data for external crates in the prelude of a crate.
+#[derive(Debug)]
+pub struct ExternalCrateData {
+    pub name: String,
+    pub num: CrateNum
+}
+
+/// Data for enum declarations.
+#[derive(Clone, Debug)]
+pub struct EnumData {
+    pub id: NodeId,
+    pub value: String,
+    pub qualname: String,
+    pub span: Span,
+    pub scope: NodeId,
+}
+
+/// Data for extern crates.
+#[derive(Debug)]
+pub struct ExternCrateData {
+    pub id: NodeId,
+    pub name: String,
+    pub crate_num: CrateNum,
+    pub location: String,
+    pub span: Span,
+    pub scope: NodeId,
+}
+
+/// Data about a function call.
+#[derive(Debug)]
+pub struct FunctionCallData {
+    pub span: Span,
+    pub scope: NodeId,
+    pub ref_id: DefId,
+}
+
+/// Data for all kinds of functions and methods.
+#[derive(Clone, Debug)]
+pub struct FunctionData {
+    pub id: NodeId,
+    pub name: String,
+    pub qualname: String,
+    pub declaration: Option<DefId>,
+    pub span: Span,
+    pub scope: NodeId,
+}
+
+/// Data about a function call.
+#[derive(Debug)]
+pub struct FunctionRefData {
+    pub span: Span,
+    pub scope: NodeId,
+    pub ref_id: DefId,
+}
+
+#[derive(Debug)]
+pub struct ImplData {
+    pub id: NodeId,
+    pub span: Span,
+    pub scope: NodeId,
+    pub trait_ref: Option<DefId>,
+    pub self_ref: Option<DefId>,
+}
+
+#[derive(Debug)]
+// FIXME: this struct should not exist. However, removing it requires heavy
+// refactoring of dump_visitor.rs. See PR 31838 for more info.
+pub struct ImplData2 {
+    pub id: NodeId,
+    pub span: Span,
+    pub scope: NodeId,
+    // FIXME: I'm not really sure inline data is the best way to do this. Seems
+    // OK in this case, but generalising leads to returning chunks of AST, which
+    // feels wrong.
+    pub trait_ref: Option<TypeRefData>,
+    pub self_ref: Option<TypeRefData>,
+}
+
+#[derive(Debug)]
+pub struct InheritanceData {
+    pub span: Span,
+    pub base_id: DefId,
+    pub deriv_id: NodeId
+}
+
+/// Data about a macro declaration.
+#[derive(Debug)]
+pub struct MacroData {
+    pub span: Span,
+    pub name: String,
+    pub qualname: String,
+}
+
+/// Data about a macro use.
+#[derive(Debug)]
+pub struct MacroUseData {
+    pub span: Span,
+    pub name: String,
+    pub qualname: String,
+    // Because macro expansion happens before ref-ids are determined,
+    // we use the callee span to reference the associated macro definition.
+    pub callee_span: Span,
+    pub scope: NodeId,
+    pub imported: bool,
+}
+
+/// Data about a method call.
+#[derive(Debug)]
+pub struct MethodCallData {
+    pub span: Span,
+    pub scope: NodeId,
+    pub ref_id: Option<DefId>,
+    pub decl_id: Option<DefId>,
+}
+
+/// Data for method declarations (methods with a body are treated as functions).
+#[derive(Clone, Debug)]
+pub struct MethodData {
+    pub id: NodeId,
+    pub qualname: String,
+    pub span: Span,
+    pub scope: NodeId,
+}
+
+/// Data for modules.
+#[derive(Debug)]
+pub struct ModData {
+    pub id: NodeId,
+    pub name: String,
+    pub qualname: String,
+    pub span: Span,
+    pub scope: NodeId,
+    pub filename: String,
+}
+
+/// Data for a reference to a module.
+#[derive(Debug)]
+pub struct ModRefData {
+    pub span: Span,
+    pub scope: NodeId,
+    pub ref_id: Option<DefId>,
+    pub qualname: String
+}
+
+#[derive(Debug)]
+pub struct StructData {
+    pub span: Span,
+    pub id: NodeId,
+    pub ctor_id: NodeId,
+    pub qualname: String,
+    pub scope: NodeId,
+    pub value: String
+}
+
+#[derive(Debug)]
+pub struct StructVariantData {
+    pub span: Span,
+    pub id: NodeId,
+    pub qualname: String,
+    pub type_value: String,
+    pub value: String,
+    pub scope: NodeId
+}
+
+#[derive(Debug)]
+pub struct TraitData {
+    pub span: Span,
+    pub id: NodeId,
+    pub qualname: String,
+    pub scope: NodeId,
+    pub value: String
+}
+
+#[derive(Debug)]
+pub struct TupleVariantData {
+    pub span: Span,
+    pub id: NodeId,
+    pub name: String,
+    pub qualname: String,
+    pub type_value: String,
+    pub value: String,
+    pub scope: NodeId
+}
+
+/// Data for a typedef.
+#[derive(Debug)]
+pub struct TypedefData {
+    pub id: NodeId,
+    pub span: Span,
+    pub qualname: String,
+    pub value: String,
+}
+
+/// Data for a reference to a type or trait.
+#[derive(Clone, Debug)]
+pub struct TypeRefData {
+    pub span: Span,
+    pub scope: NodeId,
+    pub ref_id: Option<DefId>,
+    pub qualname: String,
+}
+
+#[derive(Debug)]
+pub struct UseData {
+    pub id: NodeId,
+    pub span: Span,
+    pub name: String,
+    pub mod_id: Option<DefId>,
+    pub scope: NodeId
+}
+
+#[derive(Debug)]
+pub struct UseGlobData {
+    pub id: NodeId,
+    pub span: Span,
+    pub names: Vec<String>,
+    pub scope: NodeId
+}
+
+/// Data for local and global variables (consts and statics).
+#[derive(Debug)]
+pub struct VariableData {
+    pub id: NodeId,
+    pub name: String,
+    pub qualname: String,
+    pub span: Span,
+    pub scope: NodeId,
+    pub value: String,
+    pub type_value: String,
+}
+
+/// Data for the use of some item (e.g., the use of a local variable, which
+/// will refer to that variables declaration (by ref_id)).
+#[derive(Debug)]
+pub struct VariableRefData {
+    pub name: String,
+    pub span: Span,
+    pub scope: NodeId,
+    pub ref_id: DefId,
+}
+
+// Emitted ids are used to cross-reference items across crates. DefIds and
+// NodeIds do not usually correspond in any way. The strategy is to use the
+// index from the DefId as a crate-local id. However, within a crate, DefId
+// indices and NodeIds can overlap. So, we must adjust the NodeIds. If an
+// item can be identified by a DefId as well as a NodeId, then we use the
+// DefId index as the id. If it can't, then we have to use the NodeId, but
+// need to adjust it so it will not clash with any possible DefId index.
+pub fn normalize_node_id<'a>(tcx: &ty::TyCtxt<'a>, id: NodeId) -> usize {
+    match tcx.map.opt_local_def_id(id) {
+        Some(id) => id.index.as_usize(),
+        None => id as usize + tcx.map.num_local_def_ids()
+    }
+}
+
+// Macro to implement a normalize() function (see below for usage)
+macro_rules! impl_normalize {
+    ($($t:ty => $($field:ident),*);*) => {
+        $(
+            impl $t {
+                pub fn normalize<'a>(mut self, tcx: &ty::TyCtxt<'a>) -> $t {
+                    $(
+                        self.$field = normalize_node_id(tcx, self.$field) as u32;
+                    )*
+                    self
+                }
+            }
+        )*
+    }
+}
+
+impl_normalize! {
+    EnumData => id, scope;
+    ExternCrateData => id, scope;
+    FunctionCallData => scope;
+    FunctionData => id, scope;
+    FunctionRefData => scope;
+    ImplData => id, scope;
+    InheritanceData => deriv_id;
+    MacroUseData => scope;
+    MethodCallData => scope;
+    MethodData => id, scope;
+    ModData => id, scope;
+    ModRefData => scope;
+    StructData => ctor_id, id, scope;
+    StructVariantData => id, scope;
+    TupleVariantData => id, scope;
+    TraitData => id, scope;
+    TypedefData => id;
+    TypeRefData => scope;
+    UseData => id, scope;
+    UseGlobData => id, scope;
+    VariableData => id;
+    VariableRefData => scope
+}
diff --git a/src/librustc_trans/save/dump.rs b/src/librustc_trans/save/dump.rs
new file mode 100644
index 00000000000..b0cc7926f4e
--- /dev/null
+++ b/src/librustc_trans/save/dump.rs
@@ -0,0 +1,40 @@
+// Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+use syntax::codemap::Span;
+
+use super::data::*;
+
+pub trait Dump {
+    fn crate_prelude(&mut self, _: Span, _: CratePreludeData) {}
+    fn enum_data(&mut self, _: Span, _: EnumData) {}
+    fn extern_crate(&mut self, _: Span, _: ExternCrateData) {}
+    fn impl_data(&mut self, _: Span, _: ImplData) {}
+    fn inheritance(&mut self, _: InheritanceData) {}
+    fn function(&mut self, _: Span, _: FunctionData) {}
+    fn function_ref(&mut self, _: Span, _: FunctionRefData) {}
+    fn function_call(&mut self, _: Span, _: FunctionCallData) {}
+    fn method(&mut self, _: Span, _: MethodData) {}
+    fn method_call(&mut self, _: Span, _: MethodCallData) {}
+    fn macro_data(&mut self, _: Span, _: MacroData) {}
+    fn macro_use(&mut self, _: Span, _: MacroUseData) {}
+    fn mod_data(&mut self, _: ModData) {}
+    fn mod_ref(&mut self, _: Span, _: ModRefData) {}
+    fn struct_data(&mut self, _: Span, _: StructData) {}
+    fn struct_variant(&mut self, _: Span, _: StructVariantData) {}
+    fn trait_data(&mut self, _: Span, _: TraitData) {}
+    fn tuple_variant(&mut self, _: Span, _: TupleVariantData) {}
+    fn type_ref(&mut self, _: Span, _: TypeRefData) {}
+    fn typedef(&mut self, _: Span, _: TypedefData) {}
+    fn use_data(&mut self, _: Span, _: UseData) {}
+    fn use_glob(&mut self, _: Span, _: UseGlobData) {}
+    fn variable(&mut self, _: Span, _: VariableData) {}
+    fn variable_ref(&mut self, _: Span, _: VariableRefData) {}
+}
diff --git a/src/librustc_trans/save/dump_csv.rs b/src/librustc_trans/save/dump_visitor.rs
index c15d5ca86d0..65f48d1ff5e 100644
--- a/src/librustc_trans/save/dump_csv.rs
+++ b/src/librustc_trans/save/dump_visitor.rs
@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-//! Output a CSV file containing the output from rustc's analysis. The data is
+//! Write the output of rustc's analysis to an implementor of Dump. The data is
 //! primarily designed to be used as input to the DXR tool, specifically its
 //! Rust plugin. It could also be used by IDEs or other code browsing, search, or
 //! cross-referencing tools.
@@ -23,12 +23,9 @@
 //!
 //! SpanUtils is used to manipulate spans. In particular, to extract sub-spans
 //! from spans (e.g., the span for `bar` from the above example path).
-//! Recorder is used for recording the output in csv format. FmtStrs separates
-//! the format of the output away from extracting it from the compiler.
-//! DumpCsvVisitor walks the AST and processes it.
-
-
-use super::{escape, generated_code, recorder, SaveContext, PathCollector, Data};
+//! DumpVisitor walks the AST and processes it, and an implementor of Dump
+//! is used for recording the output in a format-agnostic way (see CsvDumper
+//! for an example).
 
 use session::Session;
 
@@ -36,9 +33,8 @@ use middle::def::Def;
 use middle::def_id::DefId;
 use middle::ty::{self, TyCtxt};
 
-use std::fs::File;
-use std::hash::*;
 use std::collections::HashSet;
+use std::hash::*;
 
 use syntax::ast::{self, NodeId, PatKind};
 use syntax::codemap::*;
@@ -49,8 +45,11 @@ use syntax::ptr::P;
 
 use rustc_front::lowering::{lower_expr, LoweringContext};
 
+use super::{escape, generated_code, SaveContext, PathCollector};
+use super::data::*;
+use super::dump::Dump;
 use super::span_utils::SpanUtils;
-use super::recorder::{Recorder, FmtStrs};
+use super::recorder;
 
 macro_rules! down_cast_data {
     ($id:ident, $kind:ident, $this:ident, $sp:expr) => {
@@ -62,14 +61,14 @@ macro_rules! down_cast_data {
     };
 }
 
-pub struct DumpCsvVisitor<'l, 'tcx: 'l> {
+pub struct DumpVisitor<'l, 'tcx: 'l, D: 'l> {
     save_ctxt: SaveContext<'l, 'tcx>,
     sess: &'l Session,
     tcx: &'l TyCtxt<'tcx>,
     analysis: &'l ty::CrateAnalysis<'l>,
+    dumper: &'l mut D,
 
     span: SpanUtils<'l>,
-    fmt: FmtStrs<'l, 'tcx>,
 
     cur_scope: NodeId,
 
@@ -82,25 +81,22 @@ pub struct DumpCsvVisitor<'l, 'tcx: 'l> {
 
 }
 
-impl <'l, 'tcx> DumpCsvVisitor<'l, 'tcx> {
+impl <'l, 'tcx, D> DumpVisitor<'l, 'tcx, D>
+where D: Dump
+{
     pub fn new(tcx: &'l TyCtxt<'tcx>,
                lcx: &'l LoweringContext<'l>,
                analysis: &'l ty::CrateAnalysis<'l>,
-               output_file: Box<File>)
-               -> DumpCsvVisitor<'l, 'tcx> {
+               dumper: &'l mut D)
+               -> DumpVisitor<'l, 'tcx, D> {
         let span_utils = SpanUtils::new(&tcx.sess);
-        DumpCsvVisitor {
+        DumpVisitor {
             sess: &tcx.sess,
             tcx: tcx,
             save_ctxt: SaveContext::from_span_utils(tcx, lcx, span_utils.clone()),
             analysis: analysis,
+            dumper: dumper,
             span: span_utils.clone(),
-            fmt: FmtStrs::new(box Recorder {
-                                  out: output_file,
-                                  dump_spans: false,
-                              },
-                              span_utils,
-                              tcx),
             cur_scope: 0,
             mac_defs: HashSet::new(),
             mac_uses: HashSet::new(),
@@ -108,7 +104,7 @@ impl <'l, 'tcx> DumpCsvVisitor<'l, 'tcx> {
     }
 
     fn nest<F>(&mut self, scope_id: NodeId, f: F)
-        where F: FnOnce(&mut DumpCsvVisitor<'l, 'tcx>)
+        where F: FnOnce(&mut DumpVisitor<'l, 'tcx, D>)
     {
         let parent_scope = self.cur_scope;
         self.cur_scope = scope_id;
@@ -118,22 +114,29 @@ impl <'l, 'tcx> DumpCsvVisitor<'l, 'tcx> {
 
     pub fn dump_crate_info(&mut self, name: &str, krate: &ast::Crate) {
         let source_file = self.tcx.sess.local_crate_source_file.as_ref();
-        let crate_root = match source_file {
-            Some(source_file) => match source_file.file_name() {
+        let crate_root = source_file.map(|source_file| {
+            match source_file.file_name() {
                 Some(_) => source_file.parent().unwrap().display().to_string(),
                 None => source_file.display().to_string(),
-            },
-            None => "<no source>".to_owned(),
-        };
+            }
+        });
+
+        // Info about all the external crates referenced from this crate.
+        let external_crates = self.save_ctxt.get_external_crates().into_iter().map(|c| {
+            ExternalCrateData {
+                name: c.name,
+                num: c.number
+            }
+        }).collect();
 
         // The current crate.
-        self.fmt.crate_str(krate.span, name, &crate_root);
+        let data = CratePreludeData {
+            crate_name: name.into(),
+            crate_root: crate_root,
+            external_crates: external_crates
+        };
 
-        // Dump info about all the external crates referenced from this crate.
-        for c in &self.save_ctxt.get_external_crates() {
-            self.fmt.external_crate_str(krate.span, &c.name, c.number);
-        }
-        self.fmt.recorder.record("end_external_crates\n");
+        self.dumper.crate_prelude(krate.span, data);
     }
 
     // Return all non-empty prefixes of a path.
@@ -198,7 +201,12 @@ impl <'l, 'tcx> DumpCsvVisitor<'l, 'tcx> {
             } else {
                 qualname.clone()
             };
-            self.fmt.sub_mod_ref_str(path.span, *span, &qualname, self.cur_scope);
+            self.dumper.mod_ref(path.span, ModRefData {
+                span: *span,
+                qualname: qualname,
+                scope: self.cur_scope,
+                ref_id: None
+            }.normalize(&self.tcx));
         }
     }
 
@@ -218,7 +226,12 @@ impl <'l, 'tcx> DumpCsvVisitor<'l, 'tcx> {
             } else {
                 qualname.clone()
             };
-            self.fmt.sub_mod_ref_str(path.span, *span, &qualname, self.cur_scope);
+            self.dumper.mod_ref(path.span, ModRefData {
+                span: *span,
+                qualname: qualname,
+                scope: self.cur_scope,
+                ref_id: None
+            }.normalize(&self.tcx));
         }
     }
 
@@ -234,7 +247,12 @@ impl <'l, 'tcx> DumpCsvVisitor<'l, 'tcx> {
 
         // write the trait part of the sub-path
         let (ref span, ref qualname) = sub_paths[len-2];
-        self.fmt.sub_type_ref_str(path.span, *span, &qualname);
+        self.dumper.type_ref(path.span, TypeRefData {
+            ref_id: None,
+            span: *span,
+            qualname: qualname.to_owned(),
+            scope: 0
+        });
 
         // write the other sub-paths
         if len <= 2 {
@@ -242,7 +260,12 @@ impl <'l, 'tcx> DumpCsvVisitor<'l, 'tcx> {
         }
         let sub_paths = &sub_paths[..len-2];
         for &(ref span, ref qualname) in sub_paths {
-            self.fmt.sub_mod_ref_str(path.span, *span, &qualname, self.cur_scope);
+            self.dumper.mod_ref(path.span, ModRefData {
+                span: *span,
+                qualname: qualname.to_owned(),
+                scope: self.cur_scope,
+                ref_id: None
+            }.normalize(&self.tcx));
         }
     }
 
@@ -260,7 +283,16 @@ impl <'l, 'tcx> DumpCsvVisitor<'l, 'tcx> {
         }
     }
 
-    fn lookup_def_kind(&self, ref_id: NodeId, span: Span) -> Option<recorder::Row> {
+    fn process_def_kind(&mut self,
+                        ref_id: NodeId,
+                        span: Span,
+                        sub_span: Option<Span>,
+                        def_id: DefId,
+                        scope: NodeId) {
+        if self.span.filter_generated(sub_span, span) {
+            return;
+        }
+
         let def_map = self.tcx.def_map.borrow();
         if !def_map.contains_key(&ref_id) {
             self.sess.span_bug(span,
@@ -270,21 +302,46 @@ impl <'l, 'tcx> DumpCsvVisitor<'l, 'tcx> {
         let def = def_map.get(&ref_id).unwrap().full_def();
         match def {
             Def::Mod(_) |
-            Def::ForeignMod(_) => Some(recorder::ModRef),
-            Def::Struct(..) => Some(recorder::TypeRef),
+            Def::ForeignMod(_) => {
+                self.dumper.mod_ref(span, ModRefData {
+                    span: sub_span.expect("No span found for mod ref"),
+                    ref_id: Some(def_id),
+                    scope: scope,
+                    qualname: String::new()
+                }.normalize(&self.tcx));
+            }
+            Def::Struct(..) |
             Def::Enum(..) |
             Def::TyAlias(..) |
             Def::AssociatedTy(..) |
-            Def::Trait(_) => Some(recorder::TypeRef),
+            Def::Trait(_) => {
+                self.dumper.type_ref(span, TypeRefData {
+                    span: sub_span.expect("No span found for type ref"),
+                    ref_id: Some(def_id),
+                    scope: scope,
+                    qualname: String::new()
+                }.normalize(&self.tcx));
+            }
             Def::Static(_, _) |
             Def::Const(_) |
             Def::AssociatedConst(..) |
             Def::Local(..) |
             Def::Variant(..) |
-            Def::Upvar(..) => Some(recorder::VarRef),
-
-            Def::Fn(..) => Some(recorder::FnRef),
-
+            Def::Upvar(..) => {
+                self.dumper.variable_ref(span, VariableRefData {
+                    span: sub_span.expect("No span found for var ref"),
+                    ref_id: def_id,
+                    scope: scope,
+                    name: String::new()
+                }.normalize(&self.tcx));
+            }
+            Def::Fn(..) => {
+                self.dumper.function_ref(span, FunctionRefData {
+                    span: sub_span.expect("No span found for fn ref"),
+                    ref_id: def_id,
+                    scope: scope
+                }.normalize(&self.tcx));
+            }
             Def::SelfTy(..) |
             Def::Label(_) |
             Def::TyParam(..) |
@@ -292,7 +349,7 @@ impl <'l, 'tcx> DumpCsvVisitor<'l, 'tcx> {
             Def::PrimTy(_) |
             Def::Err => {
                 self.sess.span_bug(span,
-                                   &format!("lookup_def_kind for unexpected item: {:?}", def));
+                                   &format!("process_def_kind for unexpected item: {:?}", def));
             }
         }
     }
@@ -307,12 +364,18 @@ impl <'l, 'tcx> DumpCsvVisitor<'l, 'tcx> {
                 let typ = self.tcx.node_types().get(&id).unwrap().to_string();
                 // get the span only for the name of the variable (I hope the path is only ever a
                 // variable name, but who knows?)
-                self.fmt.formal_str(p.span,
-                                    span_utils.span_for_last_ident(p.span),
-                                    id,
-                                    qualname,
-                                    &path_to_string(p),
-                                    &typ);
+                let sub_span = span_utils.span_for_last_ident(p.span);
+                if !self.span.filter_generated(sub_span, p.span) {
+                    self.dumper.variable(p.span, VariableData {
+                        id: id,
+                        span: sub_span.expect("No span found for variable"),
+                        name: path_to_string(p),
+                        qualname: format!("{}::{}", qualname, path_to_string(p)),
+                        type_value: typ,
+                        value: String::new(),
+                        scope: 0
+                    }.normalize(&self.tcx));
+                }
             }
         }
     }
@@ -328,19 +391,19 @@ impl <'l, 'tcx> DumpCsvVisitor<'l, 'tcx> {
         if let Some(method_data) = self.save_ctxt.get_method_data(id, name, span) {
 
             if body.is_some() {
-                self.fmt.method_str(span,
-                                    Some(method_data.span),
-                                    method_data.id,
-                                    &method_data.qualname,
-                                    method_data.declaration,
-                                    method_data.scope);
+                if !self.span.filter_generated(Some(method_data.span), span) {
+                    self.dumper.function(span, method_data.clone().normalize(&self.tcx));
+                }
                 self.process_formals(&sig.decl.inputs, &method_data.qualname);
             } else {
-                self.fmt.method_decl_str(span,
-                                         Some(method_data.span),
-                                         method_data.id,
-                                         &method_data.qualname,
-                                         method_data.scope);
+                if !self.span.filter_generated(Some(method_data.span), span) {
+                    self.dumper.method(span, MethodData {
+                        id: method_data.id,
+                        span: method_data.span,
+                        scope: method_data.scope,
+                        qualname: method_data.qualname.clone(),
+                    }.normalize(&self.tcx));
+                }
             }
             self.process_generic_params(&sig.generics, span, &method_data.qualname, id);
         }
@@ -363,25 +426,22 @@ impl <'l, 'tcx> DumpCsvVisitor<'l, 'tcx> {
     fn process_trait_ref(&mut self, trait_ref: &ast::TraitRef) {
         let trait_ref_data = self.save_ctxt.get_trait_ref_data(trait_ref, self.cur_scope);
         if let Some(trait_ref_data) = trait_ref_data {
-            self.fmt.ref_str(recorder::TypeRef,
-                             trait_ref.path.span,
-                             Some(trait_ref_data.span),
-                             trait_ref_data.ref_id,
-                             trait_ref_data.scope);
+            if !self.span.filter_generated(Some(trait_ref_data.span), trait_ref.path.span) {
+                self.dumper.type_ref(trait_ref.path.span, trait_ref_data.normalize(&self.tcx));
+            }
+
             visit::walk_path(self, &trait_ref.path);
         }
     }
 
     fn process_struct_field_def(&mut self, field: &ast::StructField, parent_id: NodeId) {
         let field_data = self.save_ctxt.get_field_data(field, parent_id);
-        if let Some(field_data) = field_data {
-            self.fmt.field_str(field.span,
-                               Some(field_data.span),
-                               field_data.id,
-                               &field_data.name,
-                               &field_data.qualname,
-                               &field_data.type_value,
-                               field_data.scope);
+        if let Some(mut field_data) = field_data {
+            if !self.span.filter_generated(Some(field_data.span), field.span) {
+                field_data.scope = normalize_node_id(&self.tcx, field_data.scope) as u32;
+                field_data.value = String::new();
+                self.dumper.variable(field.span, field_data.normalize(&self.tcx));
+            }
         }
     }
 
@@ -403,7 +463,14 @@ impl <'l, 'tcx> DumpCsvVisitor<'l, 'tcx> {
                                prefix,
                                escape(self.span.snippet(param_ss)),
                                id);
-            self.fmt.typedef_str(full_span, Some(param_ss), param.id, &name, "");
+            if !self.span.filter_generated(Some(param_ss), full_span) {
+                self.dumper.typedef(full_span, TypedefData {
+                    span: param_ss,
+                    id: param.id,
+                    qualname: name,
+                    value: String::new()
+                }.normalize(&self.tcx));
+            }
         }
         self.visit_generics(generics);
     }
@@ -415,11 +482,9 @@ impl <'l, 'tcx> DumpCsvVisitor<'l, 'tcx> {
                   body: &ast::Block) {
         if let Some(fn_data) = self.save_ctxt.get_item_data(item) {
             down_cast_data!(fn_data, FunctionData, self, item.span);
-            self.fmt.fn_str(item.span,
-                            Some(fn_data.span),
-                            fn_data.id,
-                            &fn_data.qualname,
-                            fn_data.scope);
+            if !self.span.filter_generated(Some(fn_data.span), item.span) {
+                self.dumper.function(item.span, fn_data.clone().normalize(&self.tcx));
+            }
 
             self.process_formals(&decl.inputs, &fn_data.qualname);
             self.process_generic_params(ty_params, item.span, &fn_data.qualname, item.id);
@@ -439,14 +504,11 @@ impl <'l, 'tcx> DumpCsvVisitor<'l, 'tcx> {
     fn process_static_or_const_item(&mut self, item: &ast::Item, typ: &ast::Ty, expr: &ast::Expr) {
         if let Some(var_data) = self.save_ctxt.get_item_data(item) {
             down_cast_data!(var_data, VariableData, self, item.span);
-            self.fmt.static_str(item.span,
-                                Some(var_data.span),
-                                var_data.id,
-                                &var_data.name,
-                                &var_data.qualname,
-                                &var_data.value,
-                                &var_data.type_value,
-                                var_data.scope);
+            if !self.span.filter_generated(Some(var_data.span), item.span) {
+                let mut var_data = var_data;
+                var_data.scope = normalize_node_id(&self.tcx, var_data.scope) as u32;
+                self.dumper.variable(item.span, var_data.normalize(&self.tcx));
+            }
         }
         self.visit_ty(&typ);
         self.visit_expr(expr);
@@ -462,14 +524,17 @@ impl <'l, 'tcx> DumpCsvVisitor<'l, 'tcx> {
 
         let sub_span = self.span.sub_span_after_keyword(span, keywords::Const);
 
-        self.fmt.static_str(span,
-                            sub_span,
-                            id,
-                            &name.as_str(),
-                            &qualname,
-                            &self.span.snippet(expr.span),
-                            &ty_to_string(&typ),
-                            self.cur_scope);
+        if !self.span.filter_generated(sub_span, span) {
+            self.dumper.variable(span, VariableData {
+                span: sub_span.expect("No span found for variable"),
+                id: id,
+                name: name.to_string(),
+                qualname: qualname,
+                value: self.span.snippet(expr.span),
+                type_value: ty_to_string(&typ),
+                scope: normalize_node_id(&self.tcx, self.cur_scope) as u32
+            }.normalize(&self.tcx));
+        }
 
         // walk type and init value
         self.visit_ty(typ);
@@ -484,13 +549,17 @@ impl <'l, 'tcx> DumpCsvVisitor<'l, 'tcx> {
 
         let val = self.span.snippet(item.span);
         let sub_span = self.span.sub_span_after_keyword(item.span, keywords::Struct);
-        self.fmt.struct_str(item.span,
-                            sub_span,
-                            item.id,
-                            def.id(),
-                            &qualname,
-                            self.cur_scope,
-                            &val);
+        if !self.span.filter_generated(sub_span, item.span) {
+            self.dumper.struct_data(item.span, StructData {
+                span: sub_span.expect("No span found for struct"),
+                id: item.id,
+                ctor_id: def.id(),
+                qualname: qualname.clone(),
+                scope: self.cur_scope,
+                value: val
+            }.normalize(&self.tcx));
+        }
+
 
         // fields
         for field in def.fields() {
@@ -511,12 +580,10 @@ impl <'l, 'tcx> DumpCsvVisitor<'l, 'tcx> {
             Some(data) => data,
         };
         down_cast_data!(enum_data, EnumData, self, item.span);
-        self.fmt.enum_str(item.span,
-                          Some(enum_data.span),
-                          enum_data.id,
-                          &enum_data.qualname,
-                          enum_data.scope,
-                          &enum_data.value);
+        let normalized = enum_data.clone().normalize(&self.tcx);
+        if !self.span.filter_generated(Some(normalized.span), item.span) {
+            self.dumper.enum_data(item.span, normalized);
+        }
 
         for variant in &enum_definition.variants {
             let name = &variant.node.name.name.as_str();
@@ -527,23 +594,31 @@ impl <'l, 'tcx> DumpCsvVisitor<'l, 'tcx> {
 
             match variant.node.data {
                 ast::VariantData::Struct(..) => {
-                    self.fmt.struct_variant_str(variant.span,
-                                                self.span.span_for_first_ident(variant.span),
-                                                variant.node.data.id(),
-                                                &qualname,
-                                                &enum_data.qualname,
-                                                &val,
-                                                enum_data.scope);
+                    let sub_span = self.span.span_for_first_ident(variant.span);
+                    if !self.span.filter_generated(sub_span, variant.span) {
+                        self.dumper.struct_variant(variant.span, StructVariantData {
+                            span: sub_span.expect("No span found for struct variant"),
+                            id: variant.node.data.id(),
+                            qualname: qualname,
+                            type_value: enum_data.qualname.clone(),
+                            value: val,
+                            scope: enum_data.scope
+                        }.normalize(&self.tcx));
+                    }
                 }
                 _ => {
-                    self.fmt.tuple_variant_str(variant.span,
-                                               self.span.span_for_first_ident(variant.span),
-                                               variant.node.data.id(),
-                                               name,
-                                               &qualname,
-                                               &enum_data.qualname,
-                                               &val,
-                                               enum_data.scope);
+                    let sub_span = self.span.span_for_first_ident(variant.span);
+                    if !self.span.filter_generated(sub_span, variant.span) {
+                        self.dumper.tuple_variant(variant.span, TupleVariantData {
+                            span: sub_span.expect("No span found for tuple variant"),
+                            id: variant.node.data.id(),
+                            name: name.to_string(),
+                            qualname: qualname,
+                            type_value: enum_data.qualname.clone(),
+                            value: val,
+                            scope: enum_data.scope
+                        }.normalize(&self.tcx));
+                    }
                 }
             }
 
@@ -567,27 +642,27 @@ impl <'l, 'tcx> DumpCsvVisitor<'l, 'tcx> {
             down_cast_data!(impl_data, ImplData, self, item.span);
             if let Some(ref self_ref) = impl_data.self_ref {
                 has_self_ref = true;
-                self.fmt.ref_str(recorder::TypeRef,
-                                 item.span,
-                                 Some(self_ref.span),
-                                 self_ref.ref_id,
-                                 self_ref.scope);
+                if !self.span.filter_generated(Some(self_ref.span), item.span) {
+                    self.dumper.type_ref(item.span, self_ref.clone().normalize(&self.tcx));
+                }
             }
             if let Some(ref trait_ref_data) = impl_data.trait_ref {
-                self.fmt.ref_str(recorder::TypeRef,
-                                 item.span,
-                                 Some(trait_ref_data.span),
-                                 trait_ref_data.ref_id,
-                                 trait_ref_data.scope);
+                if !self.span.filter_generated(Some(trait_ref_data.span), item.span) {
+                    self.dumper.type_ref(item.span, trait_ref_data.clone().normalize(&self.tcx));
+                }
+
                 visit::walk_path(self, &trait_ref.as_ref().unwrap().path);
             }
 
-            self.fmt.impl_str(item.span,
-                              Some(impl_data.span),
-                              impl_data.id,
-                              impl_data.self_ref.map(|data| data.ref_id),
-                              impl_data.trait_ref.map(|data| data.ref_id),
-                              impl_data.scope);
+            if !self.span.filter_generated(Some(impl_data.span), item.span) {
+                self.dumper.impl_data(item.span, ImplData {
+                    id: impl_data.id,
+                    span: impl_data.span,
+                    scope: impl_data.scope,
+                    trait_ref: impl_data.trait_ref.map(|d| d.ref_id.unwrap()),
+                    self_ref: impl_data.self_ref.map(|d| d.ref_id.unwrap())
+                }.normalize(&self.tcx));
+            }
         }
         if !has_self_ref {
             self.visit_ty(&typ);
@@ -606,12 +681,15 @@ impl <'l, 'tcx> DumpCsvVisitor<'l, 'tcx> {
         let qualname = format!("::{}", self.tcx.map.path_to_string(item.id));
         let val = self.span.snippet(item.span);
         let sub_span = self.span.sub_span_after_keyword(item.span, keywords::Trait);
-        self.fmt.trait_str(item.span,
-                           sub_span,
-                           item.id,
-                           &qualname,
-                           self.cur_scope,
-                           &val);
+        if !self.span.filter_generated(sub_span, item.span) {
+            self.dumper.trait_data(item.span, TraitData {
+                span: sub_span.expect("No span found for trait"),
+                id: item.id,
+                qualname: qualname.clone(),
+                scope: self.cur_scope,
+                value: val
+            }.normalize(&self.tcx));
+        }
 
         // super-traits
         for super_bound in trait_refs.iter() {
@@ -625,17 +703,25 @@ impl <'l, 'tcx> DumpCsvVisitor<'l, 'tcx> {
             };
 
             let trait_ref = &trait_ref.trait_ref;
-            match self.lookup_type_ref(trait_ref.ref_id) {
-                Some(id) => {
-                    let sub_span = self.span.sub_span_for_type_name(trait_ref.path.span);
-                    self.fmt.ref_str(recorder::TypeRef,
-                                     trait_ref.path.span,
-                                     sub_span,
-                                     id,
-                                     self.cur_scope);
-                    self.fmt.inherit_str(trait_ref.path.span, sub_span, id, item.id);
+            if let Some(id) = self.lookup_type_ref(trait_ref.ref_id) {
+                let sub_span = self.span.sub_span_for_type_name(trait_ref.path.span);
+                if !self.span.filter_generated(sub_span, trait_ref.path.span) {
+                    self.dumper.type_ref(trait_ref.path.span, TypeRefData {
+                        span: sub_span.expect("No span found for trait ref"),
+                        ref_id: Some(id),
+                        scope: self.cur_scope,
+                        qualname: String::new()
+                    }.normalize(&self.tcx));
+                }
+
+                if !self.span.filter_generated(sub_span, trait_ref.path.span) {
+                    let sub_span = sub_span.expect("No span for inheritance");
+                    self.dumper.inheritance(InheritanceData {
+                        span: sub_span,
+                        base_id: id,
+                        deriv_id: item.id
+                    }.normalize(&self.tcx));
                 }
-                None => (),
             }
         }
 
@@ -650,12 +736,9 @@ impl <'l, 'tcx> DumpCsvVisitor<'l, 'tcx> {
     fn process_mod(&mut self, item: &ast::Item) {
         if let Some(mod_data) = self.save_ctxt.get_item_data(item) {
             down_cast_data!(mod_data, ModData, self, item.span);
-            self.fmt.mod_str(item.span,
-                             Some(mod_data.span),
-                             mod_data.id,
-                             &mod_data.qualname,
-                             mod_data.scope,
-                             &mod_data.filename);
+            if !self.span.filter_generated(Some(mod_data.span), item.span) {
+                self.dumper.mod_data(mod_data.normalize(&self.tcx));
+            }
         }
     }
 
@@ -674,31 +757,55 @@ impl <'l, 'tcx> DumpCsvVisitor<'l, 'tcx> {
                                                 self.span.snippet(path.span)))
             }
         };
+
         match path_data {
-            Data::VariableRefData(ref vrd) => {
-                self.fmt.ref_str(ref_kind.unwrap_or(recorder::VarRef),
-                                 path.span,
-                                 Some(vrd.span),
-                                 vrd.ref_id,
-                                 vrd.scope);
+            Data::VariableRefData(vrd) => {
+                // FIXME: this whole block duplicates the code in process_def_kind
+                if !self.span.filter_generated(Some(vrd.span), path.span) {
+                    match ref_kind {
+                        Some(recorder::TypeRef) => {
+                            self.dumper.type_ref(path.span, TypeRefData {
+                                span: vrd.span,
+                                ref_id: Some(vrd.ref_id),
+                                scope: vrd.scope,
+                                qualname: String::new()
+                            }.normalize(&self.tcx));
+                        }
+                        Some(recorder::FnRef) => {
+                            self.dumper.function_ref(path.span, FunctionRefData {
+                                span: vrd.span,
+                                ref_id: vrd.ref_id,
+                                scope: vrd.scope
+                            }.normalize(&self.tcx));
+                        }
+                        Some(recorder::ModRef) => {
+                            self.dumper.mod_ref(path.span, ModRefData {
+                                span: vrd.span,
+                                ref_id: Some(vrd.ref_id),
+                                scope: vrd.scope,
+                                qualname: String::new()
+                            }.normalize(&self.tcx));
+                        }
+                        Some(recorder::VarRef) | None
+                            => self.dumper.variable_ref(path.span, vrd.normalize(&self.tcx))
+                    }
+                }
 
             }
-            Data::TypeRefData(ref trd) => {
-                self.fmt.ref_str(recorder::TypeRef,
-                                 path.span,
-                                 Some(trd.span),
-                                 trd.ref_id,
-                                 trd.scope);
+            Data::TypeRefData(trd) => {
+                if !self.span.filter_generated(Some(trd.span), path.span) {
+                    self.dumper.type_ref(path.span, trd.normalize(&self.tcx));
+                }
             }
-            Data::MethodCallData(ref mcd) => {
-                self.fmt.meth_call_str(path.span,
-                                       Some(mcd.span),
-                                       mcd.ref_id,
-                                       mcd.decl_id,
-                                       mcd.scope);
+            Data::MethodCallData(mcd) => {
+                if !self.span.filter_generated(Some(mcd.span), path.span) {
+                    self.dumper.method_call(path.span, mcd.normalize(&self.tcx));
+                }
             }
             Data::FunctionCallData(fcd) => {
-                self.fmt.fn_call_str(path.span, Some(fcd.span), fcd.ref_id, fcd.scope);
+                if !self.span.filter_generated(Some(fcd.span), path.span) {
+                    self.dumper.function_call(path.span, fcd.normalize(&self.tcx));
+                }
             }
             _ => {
                 self.sess.span_bug(path.span,
@@ -739,22 +846,19 @@ impl <'l, 'tcx> DumpCsvVisitor<'l, 'tcx> {
 
         if let Some(struct_lit_data) = self.save_ctxt.get_expr_data(ex) {
             down_cast_data!(struct_lit_data, TypeRefData, self, ex.span);
-            self.fmt.ref_str(recorder::TypeRef,
-                             ex.span,
-                             Some(struct_lit_data.span),
-                             struct_lit_data.ref_id,
-                             struct_lit_data.scope);
+            if !self.span.filter_generated(Some(struct_lit_data.span), ex.span) {
+                self.dumper.type_ref(ex.span, struct_lit_data.normalize(&self.tcx));
+            }
+
             let scope = self.save_ctxt.enclosing_scope(ex.id);
 
             for field in fields {
                 if let Some(field_data) = self.save_ctxt
                                               .get_field_ref_data(field, variant, scope) {
 
-                    self.fmt.ref_str(recorder::VarRef,
-                                     field.ident.span,
-                                     Some(field_data.span),
-                                     field_data.ref_id,
-                                     field_data.scope);
+                    if !self.span.filter_generated(Some(field_data.span), field.ident.span) {
+                        self.dumper.variable_ref(field.ident.span, field_data.normalize(&self.tcx));
+                    }
                 }
 
                 self.visit_expr(&field.expr)
@@ -765,13 +869,11 @@ impl <'l, 'tcx> DumpCsvVisitor<'l, 'tcx> {
     }
 
     fn process_method_call(&mut self, ex: &ast::Expr, args: &Vec<P<ast::Expr>>) {
-        if let Some(call_data) = self.save_ctxt.get_expr_data(ex) {
-            down_cast_data!(call_data, MethodCallData, self, ex.span);
-            self.fmt.meth_call_str(ex.span,
-                                   Some(call_data.span),
-                                   call_data.ref_id,
-                                   call_data.decl_id,
-                                   call_data.scope);
+        if let Some(mcd) = self.save_ctxt.get_expr_data(ex) {
+            down_cast_data!(mcd, MethodCallData, self, ex.span);
+            if !self.span.filter_generated(Some(mcd.span), ex.span) {
+                self.dumper.method_call(ex.span, mcd.normalize(&self.tcx));
+            }
         }
 
         // walk receiver and args
@@ -789,7 +891,14 @@ impl <'l, 'tcx> DumpCsvVisitor<'l, 'tcx> {
                 for &Spanned { node: ref field, span } in fields {
                     let sub_span = self.span.span_for_first_ident(span);
                     if let Some(f) = variant.find_field_named(field.ident.name) {
-                        self.fmt.ref_str(recorder::VarRef, span, sub_span, f.did, self.cur_scope);
+                        if !self.span.filter_generated(sub_span, span) {
+                            self.dumper.variable_ref(span, VariableRefData {
+                                span: sub_span.expect("No span fund for var ref"),
+                                ref_id: f.did,
+                                scope: self.cur_scope,
+                                name: String::new()
+                            }.normalize(&self.tcx));
+                        }
                     }
                     self.visit_pat(&field.pat);
                 }
@@ -818,12 +927,17 @@ impl <'l, 'tcx> DumpCsvVisitor<'l, 'tcx> {
             // is only ever a variable name, but who knows?).
             let sub_span = self.span.span_for_last_ident(p.span);
             // Rust uses the id of the pattern for var lookups, so we'll use it too.
-            self.fmt.variable_str(p.span,
-                                  sub_span,
-                                  id,
-                                  &path_to_string(p),
-                                  &value,
-                                  &typ);
+            if !self.span.filter_generated(sub_span, p.span) {
+                self.dumper.variable(p.span, VariableData {
+                    span: sub_span.expect("No span found for variable"),
+                    id: id,
+                    name: path_to_string(p),
+                    qualname: format!("{}${}", path_to_string(p), id),
+                    value: value,
+                    type_value: typ,
+                    scope: 0
+                }.normalize(&self.tcx));
+            }
         }
     }
 
@@ -848,21 +962,30 @@ impl <'l, 'tcx> DumpCsvVisitor<'l, 'tcx> {
             && !data.imported {
             self.mac_defs.insert(data.callee_span);
             if let Some(sub_span) = self.span.span_for_macro_def_name(data.callee_span) {
-                self.fmt.macro_str(data.callee_span, sub_span,
-                                   data.name.clone(), qualname.clone());
+                self.dumper.macro_data(data.callee_span, MacroData {
+                    span: sub_span,
+                    name: data.name.clone(),
+                    qualname: qualname.clone()
+                });
             }
         }
         if !self.mac_uses.contains(&data.span) {
             self.mac_uses.insert(data.span);
             if let Some(sub_span) = self.span.span_for_macro_use_name(data.span) {
-                self.fmt.macro_use_str(data.span, sub_span, data.name,
-                                       qualname, data.scope);
+                self.dumper.macro_use(data.span, MacroUseData {
+                    span: sub_span,
+                    name: data.name,
+                    qualname: qualname,
+                    scope: data.scope,
+                    callee_span: data.callee_span,
+                    imported: data.imported
+                }.normalize(&self.tcx));
             }
         }
     }
 }
 
-impl<'l, 'tcx, 'v> Visitor<'v> for DumpCsvVisitor<'l, 'tcx> {
+impl<'l, 'tcx, 'v, D: Dump + 'l> Visitor<'v> for DumpVisitor<'l, 'tcx, D> {
     fn visit_item(&mut self, item: &ast::Item) {
         use syntax::ast::ItemKind::*;
         self.process_macro_use(item.span, item.id);
@@ -873,14 +996,9 @@ impl<'l, 'tcx, 'v> Visitor<'v> for DumpCsvVisitor<'l, 'tcx> {
                         let sub_span = self.span.span_for_last_ident(path.span);
                         let mod_id = match self.lookup_type_ref(item.id) {
                             Some(def_id) => {
-                                match self.lookup_def_kind(item.id, path.span) {
-                                    Some(kind) => self.fmt.ref_str(kind,
-                                                                   path.span,
-                                                                   sub_span,
-                                                                   def_id,
-                                                                   self.cur_scope),
-                                    None => {}
-                                }
+                                let scope = self.cur_scope;
+                                self.process_def_kind(item.id, path.span, sub_span, def_id, scope);
+
                                 Some(def_id)
                             }
                             None => None,
@@ -894,53 +1012,51 @@ impl<'l, 'tcx, 'v> Visitor<'v> for DumpCsvVisitor<'l, 'tcx> {
                             None => sub_span,
                         };
 
-                        self.fmt.use_alias_str(path.span,
-                                               sub_span,
-                                               item.id,
-                                               mod_id,
-                                               &ident.name.as_str(),
-                                               self.cur_scope);
+                        if !self.span.filter_generated(sub_span, path.span) {
+                            self.dumper.use_data(path.span, UseData {
+                                span: sub_span.expect("No span found for use"),
+                                id: item.id,
+                                mod_id: mod_id,
+                                name: ident.name.to_string(),
+                                scope: self.cur_scope
+                            }.normalize(&self.tcx));
+                        }
                         self.write_sub_paths_truncated(path, true);
                     }
                     ast::ViewPathGlob(ref path) => {
                         // Make a comma-separated list of names of imported modules.
-                        let mut name_string = String::new();
+                        let mut names = vec![];
                         let glob_map = &self.analysis.glob_map;
                         let glob_map = glob_map.as_ref().unwrap();
                         if glob_map.contains_key(&item.id) {
                             for n in glob_map.get(&item.id).unwrap() {
-                                if !name_string.is_empty() {
-                                    name_string.push_str(", ");
-                                }
-                                name_string.push_str(&n.as_str());
+                                names.push(n.to_string());
                             }
                         }
 
                         let sub_span = self.span
                                            .sub_span_of_token(path.span, token::BinOp(token::Star));
-                        self.fmt.use_glob_str(path.span,
-                                              sub_span,
-                                              item.id,
-                                              &name_string,
-                                              self.cur_scope);
+                        if !self.span.filter_generated(sub_span, path.span) {
+                            self.dumper.use_glob(path.span, UseGlobData {
+                                span: sub_span.expect("No span found for use glob"),
+                                id: item.id,
+                                names: names,
+                                scope: self.cur_scope
+                            }.normalize(&self.tcx));
+                        }
                         self.write_sub_paths(path, true);
                     }
                     ast::ViewPathList(ref path, ref list) => {
                         for plid in list {
                             match plid.node {
                                 ast::PathListItemKind::Ident { id, .. } => {
-                                    match self.lookup_type_ref(id) {
-                                        Some(def_id) => match self.lookup_def_kind(id, plid.span) {
-                                            Some(kind) => {
-                                                self.fmt.ref_str(kind,
-                                                                 plid.span,
-                                                                 Some(plid.span),
-                                                                 def_id,
-                                                                 self.cur_scope);
-                                            }
-                                            None => (),
-                                        },
-                                        None => (),
+                                    let scope = self.cur_scope;
+                                    if let Some(def_id) = self.lookup_type_ref(id) {
+                                        self.process_def_kind(id,
+                                                              plid.span,
+                                                              Some(plid.span),
+                                                              def_id,
+                                                              scope);
                                     }
                                 }
                                 ast::PathListItemKind::Mod { .. } => (),
@@ -961,13 +1077,17 @@ impl<'l, 'tcx, 'v> Visitor<'v> for DumpCsvVisitor<'l, 'tcx> {
                     Some(cnum) => cnum,
                     None => 0,
                 };
-                self.fmt.extern_crate_str(item.span,
-                                          alias_span,
-                                          item.id,
-                                          cnum,
-                                          &item.ident.name.as_str(),
-                                          &location,
-                                          self.cur_scope);
+
+                if !self.span.filter_generated(alias_span, item.span) {
+                    self.dumper.extern_crate(item.span, ExternCrateData {
+                        id: item.id,
+                        name: item.ident.name.to_string(),
+                        crate_num: cnum,
+                        location: location,
+                        span: alias_span.expect("No span found for extern crate"),
+                        scope: self.cur_scope,
+                    }.normalize(&self.tcx));
+                }
             }
             Fn(ref decl, _, _, _, ref ty_params, ref body) =>
                 self.process_fn(item, &decl, ty_params, &body),
@@ -994,7 +1114,14 @@ impl<'l, 'tcx, 'v> Visitor<'v> for DumpCsvVisitor<'l, 'tcx> {
                 let qualname = format!("::{}", self.tcx.map.path_to_string(item.id));
                 let value = ty_to_string(&ty);
                 let sub_span = self.span.sub_span_after_keyword(item.span, keywords::Type);
-                self.fmt.typedef_str(item.span, sub_span, item.id, &qualname, &value);
+                if !self.span.filter_generated(sub_span, item.span) {
+                    self.dumper.typedef(item.span, TypedefData {
+                        span: sub_span.expect("No span found for typedef"),
+                        id: item.id,
+                        qualname: qualname.clone(),
+                        value: value
+                    }.normalize(&self.tcx));
+                }
 
                 self.visit_ty(&ty);
                 self.process_generic_params(ty_params, item.span, &qualname, item.id);
@@ -1065,12 +1192,16 @@ impl<'l, 'tcx, 'v> Visitor<'v> for DumpCsvVisitor<'l, 'tcx> {
         self.process_macro_use(t.span, t.id);
         match t.node {
             ast::TyKind::Path(_, ref path) => {
-                match self.lookup_type_ref(t.id) {
-                    Some(id) => {
-                        let sub_span = self.span.sub_span_for_type_name(t.span);
-                        self.fmt.ref_str(recorder::TypeRef, t.span, sub_span, id, self.cur_scope);
+                if let Some(id) = self.lookup_type_ref(t.id) {
+                    let sub_span = self.span.sub_span_for_type_name(t.span);
+                    if !self.span.filter_generated(sub_span, t.span) {
+                        self.dumper.type_ref(t.span, TypeRefData {
+                            span: sub_span.expect("No span found for type ref"),
+                            ref_id: Some(id),
+                            scope: self.cur_scope,
+                            qualname: String::new()
+                        }.normalize(&self.tcx));
                     }
-                    None => (),
                 }
 
                 self.write_sub_paths_truncated(path, false);
@@ -1105,11 +1236,9 @@ impl<'l, 'tcx, 'v> Visitor<'v> for DumpCsvVisitor<'l, 'tcx> {
 
                 if let Some(field_data) = self.save_ctxt.get_expr_data(ex) {
                     down_cast_data!(field_data, VariableRefData, self, ex.span);
-                    self.fmt.ref_str(recorder::VarRef,
-                                     ex.span,
-                                     Some(field_data.span),
-                                     field_data.ref_id,
-                                     field_data.scope);
+                    if !self.span.filter_generated(Some(field_data.span), ex.span) {
+                        self.dumper.variable_ref(ex.span, field_data.normalize(&self.tcx));
+                    }
                 }
             }
             ast::ExprKind::TupField(ref sub_ex, idx) => {
@@ -1120,11 +1249,14 @@ impl<'l, 'tcx, 'v> Visitor<'v> for DumpCsvVisitor<'l, 'tcx> {
                 match *ty {
                     ty::TyStruct(def, _) => {
                         let sub_span = self.span.sub_span_after_token(ex.span, token::Dot);
-                        self.fmt.ref_str(recorder::VarRef,
-                                         ex.span,
-                                         sub_span,
-                                         def.struct_variant().fields[idx.node].did,
-                                         self.cur_scope);
+                        if !self.span.filter_generated(sub_span, ex.span) {
+                            self.dumper.variable_ref(ex.span, VariableRefData {
+                                span: sub_span.expect("No span found for var ref"),
+                                ref_id: def.struct_variant().fields[idx.node].did,
+                                scope: self.cur_scope,
+                                name: String::new()
+                            }.normalize(&self.tcx));
+                        }
                     }
                     ty::TyTuple(_) => {}
                     _ => self.sess.span_bug(ex.span,
@@ -1208,7 +1340,17 @@ impl<'l, 'tcx, 'v> Visitor<'v> for DumpCsvVisitor<'l, 'tcx> {
 
                     assert!(p.segments.len() == 1,
                             "qualified path for local variable def in arm");
-                    self.fmt.variable_str(p.span, Some(p.span), id, &path_to_string(p), &value, "")
+                    if !self.span.filter_generated(Some(p.span), p.span) {
+                        self.dumper.variable(p.span, VariableData {
+                            span: p.span,
+                            id: id,
+                            name: path_to_string(p),
+                            qualname: format!("{}${}", path_to_string(p), id),
+                            value: value,
+                            type_value: String::new(),
+                            scope: 0
+                        }.normalize(&self.tcx));
+                    }
                 }
                 Def::Variant(..) | Def::Enum(..) |
                 Def::TyAlias(..) | Def::Struct(..) => {
diff --git a/src/librustc_trans/save/mod.rs b/src/librustc_trans/save/mod.rs
index 7f9f876fad1..78e91e00baa 100644
--- a/src/librustc_trans/save/mod.rs
+++ b/src/librustc_trans/save/mod.rs
@@ -28,13 +28,32 @@ use syntax::parse::token::{self, keywords};
 use syntax::visit::{self, Visitor};
 use syntax::print::pprust::ty_to_string;
 
-use self::span_utils::SpanUtils;
-
+mod csv_dumper;
+#[macro_use]
+mod data;
+mod dump;
+mod dump_visitor;
 #[macro_use]
 pub mod span_utils;
-pub mod recorder;
 
-mod dump_csv;
+pub use self::csv_dumper::CsvDumper;
+pub use self::data::*;
+pub use self::dump::Dump;
+pub use self::dump_visitor::DumpVisitor;
+use self::span_utils::SpanUtils;
+
+// FIXME this is legacy code and should be removed
+pub mod recorder {
+    pub use self::Row::*;
+
+    #[derive(Copy, Clone, Debug, Eq, PartialEq)]
+    pub enum Row {
+        TypeRef,
+        ModRef,
+        VarRef,
+        FnRef,
+    }
+}
 
 pub struct SaveContext<'l, 'tcx: 'l> {
     tcx: &'l TyCtxt<'tcx>,
@@ -42,158 +61,10 @@ pub struct SaveContext<'l, 'tcx: 'l> {
     span_utils: SpanUtils<'l>,
 }
 
-pub struct CrateData {
-    pub name: String,
-    pub number: u32,
-}
-
-/// Data for any entity in the Rust language. The actual data contained varied
-/// with the kind of entity being queried. See the nested structs for details.
-#[derive(Debug)]
-pub enum Data {
-    /// Data for all kinds of functions and methods.
-    FunctionData(FunctionData),
-    /// Data for local and global variables (consts and statics), and fields.
-    VariableData(VariableData),
-    /// Data for modules.
-    ModData(ModData),
-    /// Data for Enums.
-    EnumData(EnumData),
-    /// Data for impls.
-    ImplData(ImplData),
-
-    /// Data for the use of some variable (e.g., the use of a local variable, which
-    /// will refere to that variables declaration).
-    VariableRefData(VariableRefData),
-    /// Data for a reference to a type or trait.
-    TypeRefData(TypeRefData),
-    /// Data for a reference to a module.
-    ModRefData(ModRefData),
-    /// Data about a function call.
-    FunctionCallData(FunctionCallData),
-    /// Data about a method call.
-    MethodCallData(MethodCallData),
-    /// Data about a macro use.
-    MacroUseData(MacroUseData),
-}
-
-/// Data for all kinds of functions and methods.
-#[derive(Debug)]
-pub struct FunctionData {
-    pub id: NodeId,
-    pub name: String,
-    pub qualname: String,
-    pub declaration: Option<DefId>,
-    pub span: Span,
-    pub scope: NodeId,
-}
-
-/// Data for local and global variables (consts and statics).
-#[derive(Debug)]
-pub struct VariableData {
-    pub id: NodeId,
-    pub name: String,
-    pub qualname: String,
-    pub span: Span,
-    pub scope: NodeId,
-    pub value: String,
-    pub type_value: String,
-}
-
-/// Data for modules.
-#[derive(Debug)]
-pub struct ModData {
-    pub id: NodeId,
-    pub name: String,
-    pub qualname: String,
-    pub span: Span,
-    pub scope: NodeId,
-    pub filename: String,
-}
-
-/// Data for enum declarations.
-#[derive(Debug)]
-pub struct EnumData {
-    pub id: NodeId,
-    pub value: String,
-    pub qualname: String,
-    pub span: Span,
-    pub scope: NodeId,
-}
-
-#[derive(Debug)]
-pub struct ImplData {
-    pub id: NodeId,
-    pub span: Span,
-    pub scope: NodeId,
-    // FIXME: I'm not really sure inline data is the best way to do this. Seems
-    // OK in this case, but generalising leads to returning chunks of AST, which
-    // feels wrong.
-    pub trait_ref: Option<TypeRefData>,
-    pub self_ref: Option<TypeRefData>,
-}
-
-/// Data for the use of some item (e.g., the use of a local variable, which
-/// will refer to that variables declaration (by ref_id)).
-#[derive(Debug)]
-pub struct VariableRefData {
-    pub name: String,
-    pub span: Span,
-    pub scope: NodeId,
-    pub ref_id: DefId,
-}
-
-/// Data for a reference to a type or trait.
-#[derive(Debug)]
-pub struct TypeRefData {
-    pub span: Span,
-    pub scope: NodeId,
-    pub ref_id: DefId,
-}
-
-/// Data for a reference to a module.
-#[derive(Debug)]
-pub struct ModRefData {
-    pub span: Span,
-    pub scope: NodeId,
-    pub ref_id: DefId,
-}
-
-/// Data about a function call.
-#[derive(Debug)]
-pub struct FunctionCallData {
-    pub span: Span,
-    pub scope: NodeId,
-    pub ref_id: DefId,
-}
-
-/// Data about a method call.
-#[derive(Debug)]
-pub struct MethodCallData {
-    pub span: Span,
-    pub scope: NodeId,
-    pub ref_id: Option<DefId>,
-    pub decl_id: Option<DefId>,
-}
-
-/// Data about a macro use.
-#[derive(Debug)]
-pub struct MacroUseData {
-    pub span: Span,
-    pub name: String,
-    // Because macro expansion happens before ref-ids are determined,
-    // we use the callee span to reference the associated macro definition.
-    pub callee_span: Span,
-    pub scope: NodeId,
-    pub imported: bool,
-}
-
 macro_rules! option_try(
     ($e:expr) => (match $e { Some(e) => e, None => return None })
 );
 
-
-
 impl<'l, 'tcx: 'l> SaveContext<'l, 'tcx> {
     pub fn new(tcx: &'l TyCtxt<'tcx>,
                lcx: &'l lowering::LoweringContext<'l>)
@@ -325,7 +196,8 @@ impl<'l, 'tcx: 'l> SaveContext<'l, 'tcx> {
                             TypeRefData {
                                 span: sub_span.unwrap(),
                                 scope: parent,
-                                ref_id: id,
+                                ref_id: Some(id),
+                                qualname: String::new() // FIXME: generate the real qualname
                             }
                         });
                     }
@@ -340,7 +212,7 @@ impl<'l, 'tcx: 'l> SaveContext<'l, 'tcx> {
                                           .and_then(|tr| self.get_trait_ref_data(tr, parent));
 
                 filter!(self.span_utils, sub_span, typ.span, None);
-                Some(Data::ImplData(ImplData {
+                Some(Data::ImplData(ImplData2 {
                     id: item.id,
                     span: sub_span.unwrap(),
                     scope: parent,
@@ -477,7 +349,8 @@ impl<'l, 'tcx: 'l> SaveContext<'l, 'tcx> {
             Some(TypeRefData {
                 span: sub_span.unwrap(),
                 scope: parent,
-                ref_id: def_id,
+                ref_id: Some(def_id),
+                qualname: String::new() // FIXME: generate the real qualname
             })
         })
     }
@@ -518,7 +391,8 @@ impl<'l, 'tcx: 'l> SaveContext<'l, 'tcx> {
                         Some(Data::TypeRefData(TypeRefData {
                             span: sub_span.unwrap(),
                             scope: self.enclosing_scope(expr.id),
-                            ref_id: def.did,
+                            ref_id: Some(def.did),
+                            qualname: String::new() // FIXME: generate the real qualname
                         }))
                     }
                     _ => {
@@ -586,8 +460,9 @@ impl<'l, 'tcx: 'l> SaveContext<'l, 'tcx> {
             Def::TyParam(_, _, def_id, _) => {
                 Some(Data::TypeRefData(TypeRefData {
                     span: sub_span.unwrap(),
-                    ref_id: def_id,
+                    ref_id: Some(def_id),
                     scope: self.enclosing_scope(id),
+                    qualname: String::new() // FIXME: generate the real qualname
                 }))
             }
             Def::Method(decl_id) => {
@@ -635,9 +510,10 @@ impl<'l, 'tcx: 'l> SaveContext<'l, 'tcx> {
             }
             Def::Mod(def_id) => {
                 Some(Data::ModRefData(ModRefData {
-                    ref_id: def_id,
+                    ref_id: Some(def_id),
                     span: sub_span.unwrap(),
                     scope: self.enclosing_scope(id),
+                    qualname: String::new() // FIXME: generate the real qualname
                 }))
             }
             _ => None,
@@ -708,6 +584,7 @@ impl<'l, 'tcx: 'l> SaveContext<'l, 'tcx> {
                                         callee_span: mac_span,
                                         scope: self.enclosing_scope(id),
                                         imported: true,
+                                        qualname: String::new()// FIXME: generate the real qualname
                                     });
         }
 
@@ -717,6 +594,7 @@ impl<'l, 'tcx: 'l> SaveContext<'l, 'tcx> {
             callee_span: callee_span,
             scope: self.enclosing_scope(id),
             imported: false,
+            qualname: String::new() // FIXME: generate the real qualname
         })
     }
 
@@ -833,16 +711,16 @@ pub fn process_crate<'l, 'tcx>(tcx: &'l TyCtxt<'tcx>,
     out_name.push_str(&tcx.sess.opts.cg.extra_filename);
     out_name.push_str(".csv");
     root_path.push(&out_name);
-    let output_file = match File::create(&root_path) {
-        Ok(f) => box f,
-        Err(e) => {
-            let disp = root_path.display();
-            tcx.sess.fatal(&format!("Could not open {}: {}", disp, e));
-        }
-    };
+    let mut output_file = File::create(&root_path).unwrap_or_else(|e| {
+        let disp = root_path.display();
+        tcx.sess.fatal(&format!("Could not open {}: {}", disp, e));
+    });
     root_path.pop();
 
-    let mut visitor = dump_csv::DumpCsvVisitor::new(tcx, lcx, analysis, output_file);
+    let utils = SpanUtils::new(&tcx.sess);
+    let mut dumper = CsvDumper::new(&mut output_file, utils);
+    let mut visitor = DumpVisitor::new(tcx, lcx, analysis, &mut dumper);
+    // FIXME: we don't write anything!
 
     visitor.dump_crate_info(cratename, krate);
     visit::walk_crate(&mut visitor, krate);
diff --git a/src/librustc_trans/save/recorder.rs b/src/librustc_trans/save/recorder.rs
deleted file mode 100644
index 7ca2cf998bd..00000000000
--- a/src/librustc_trans/save/recorder.rs
+++ /dev/null
@@ -1,714 +0,0 @@
-// Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-pub use self::Row::*;
-
-use super::escape;
-use super::span_utils::SpanUtils;
-
-use middle::cstore::LOCAL_CRATE;
-use middle::def_id::{CRATE_DEF_INDEX, DefId};
-use middle::ty::TyCtxt;
-
-use std::io::Write;
-
-use syntax::ast;
-use syntax::ast::NodeId;
-use syntax::codemap::*;
-
-const CRATE_ROOT_DEF_ID: DefId = DefId {
-    krate: LOCAL_CRATE,
-    index: CRATE_DEF_INDEX,
-};
-
-pub struct Recorder {
-    // output file
-    pub out: Box<Write + 'static>,
-    pub dump_spans: bool,
-}
-
-impl Recorder {
-    pub fn record(&mut self, info: &str) {
-        match write!(self.out, "{}", info) {
-            Err(_) => error!("Error writing output '{}'", info),
-            _ => (),
-        }
-    }
-
-    pub fn dump_span(&mut self, su: SpanUtils, kind: &str, span: Span, _sub_span: Option<Span>) {
-        assert!(self.dump_spans);
-        let result = format!("span,kind,{},{},text,\"{}\"\n",
-                             kind,
-                             su.extent_str(span),
-                             escape(su.snippet(span)));
-        self.record(&result[..]);
-    }
-}
-
-pub struct FmtStrs<'a, 'tcx: 'a> {
-    pub recorder: Box<Recorder>,
-    span: SpanUtils<'a>,
-    tcx: &'a TyCtxt<'tcx>,
-}
-
-macro_rules! s { ($e:expr) => { format!("{}", $e) }}
-macro_rules! svec {
-    ($($e:expr),*) => ({
-        // leading _ to allow empty construction without a warning.
-        let mut _temp = ::std::vec::Vec::new();
-        $(_temp.push(s!($e));)*
-        _temp
-    })
-}
-
-// FIXME recorder should operate on super::Data, rather than lots of ad hoc
-// data.
-
-#[derive(Copy, Clone, Debug, Eq, PartialEq)]
-pub enum Row {
-    Variable,
-    Enum,
-    Variant,
-    VariantStruct,
-    Function,
-    MethodDecl,
-    Struct,
-    Trait,
-    Impl,
-    Module,
-    UseAlias,
-    UseGlob,
-    ExternCrate,
-    Inheritance,
-    MethodCall,
-    Typedef,
-    ExternalCrate,
-    Crate,
-    FnCall,
-    ModRef,
-    VarRef,
-    TypeRef,
-    FnRef,
-    Macro,
-    MacroUse,
-}
-
-impl<'a, 'tcx: 'a> FmtStrs<'a, 'tcx> {
-    pub fn new(rec: Box<Recorder>,
-               span: SpanUtils<'a>,
-               tcx: &'a TyCtxt<'tcx>)
-               -> FmtStrs<'a, 'tcx> {
-        FmtStrs {
-            recorder: rec,
-            span: span,
-            tcx: tcx,
-        }
-    }
-
-    // Emitted ids are used to cross-reference items across crates. DefIds and
-    // NodeIds do not usually correspond in any way. The strategy is to use the
-    // index from the DefId as a crate-local id. However, within a crate, DefId
-    // indices and NodeIds can overlap. So, we must adjust the NodeIds. If an
-    // item can be identified by a DefId as well as a NodeId, then we use the
-    // DefId index as the id. If it can't, then we have to use the NodeId, but
-    // need to adjust it so it will not clash with any possible DefId index.
-    fn normalize_node_id(&self, id: NodeId) -> usize {
-        match self.tcx.map.opt_local_def_id(id) {
-            Some(id) => id.index.as_usize(),
-            None => id as usize + self.tcx.map.num_local_def_ids()
-        }
-    }
-
-    // A map from kind of item to a tuple of
-    //   a string representation of the name
-    //   a vector of field names
-    //   whether this kind requires a span
-    //   whether dump_spans should dump for this kind
-    fn lookup_row(r: Row) -> (&'static str, Vec<&'static str>, bool, bool) {
-        match r {
-            Variable => ("variable",
-                         vec!("id", "name", "qualname", "value", "type", "scopeid"),
-                         true,
-                         true),
-            Enum => ("enum",
-                     vec!("id", "qualname", "scopeid", "value"),
-                     true,
-                     true),
-            Variant => ("variant",
-                        vec!("id", "name", "qualname", "type", "value", "scopeid"),
-                        true,
-                        true),
-            VariantStruct => ("variant_struct",
-                              vec!("id", "ctor_id", "qualname", "type", "value", "scopeid"),
-                              true,
-                              true),
-            Function => ("function",
-                         vec!("id", "qualname", "declid", "declidcrate", "scopeid"),
-                         true,
-                         true),
-            MethodDecl => ("method_decl",
-                           vec!("id", "qualname", "scopeid"),
-                           true,
-                           true),
-            Struct => ("struct",
-                       vec!("id", "ctor_id", "qualname", "scopeid", "value"),
-                       true,
-                       true),
-            Trait => ("trait",
-                      vec!("id", "qualname", "scopeid", "value"),
-                      true,
-                      true),
-            Impl => ("impl",
-                     vec!("id",
-                          "refid",
-                          "refidcrate",
-                          "traitid",
-                          "traitidcrate",
-                          "scopeid"),
-                     true,
-                     true),
-            Module => ("module",
-                       vec!("id", "qualname", "scopeid", "def_file"),
-                       true,
-                       false),
-            UseAlias => ("use_alias",
-                         vec!("id", "refid", "refidcrate", "name", "scopeid"),
-                         true,
-                         true),
-            UseGlob => ("use_glob", vec!("id", "value", "scopeid"), true, true),
-            ExternCrate => ("extern_crate",
-                            vec!("id", "name", "location", "crate", "scopeid"),
-                            true,
-                            true),
-            Inheritance => ("inheritance",
-                            vec!("base", "basecrate", "derived", "derivedcrate"),
-                            true,
-                            false),
-            MethodCall => ("method_call",
-                           vec!("refid", "refidcrate", "declid", "declidcrate", "scopeid"),
-                           true,
-                           true),
-            Typedef => ("typedef", vec!("id", "qualname", "value"), true, true),
-            ExternalCrate => ("external_crate",
-                              vec!("name", "crate", "file_name"),
-                              false,
-                              false),
-            Crate => ("crate", vec!("name", "crate_root"), true, false),
-            FnCall => ("fn_call",
-                       vec!("refid", "refidcrate", "qualname", "scopeid"),
-                       true,
-                       true),
-            ModRef => ("mod_ref",
-                       vec!("refid", "refidcrate", "qualname", "scopeid"),
-                       true,
-                       true),
-            VarRef => ("var_ref",
-                       vec!("refid", "refidcrate", "qualname", "scopeid"),
-                       true,
-                       true),
-            TypeRef => ("type_ref",
-                        vec!("refid", "refidcrate", "qualname", "scopeid"),
-                        true,
-                        true),
-            FnRef => ("fn_ref",
-                      vec!("refid", "refidcrate", "qualname", "scopeid"),
-                      true,
-                      true),
-            Macro => ("macro",
-                         vec!("name", "qualname"),
-                         true,
-                         true),
-            MacroUse => ("macro_use",
-                         vec!("callee_name", "qualname", "scopeid"),
-                         true,
-                         true),
-        }
-    }
-
-    pub fn make_values_str(&self,
-                           kind: &'static str,
-                           fields: &Vec<&'static str>,
-                           values: Vec<String>,
-                           span: Span)
-                           -> Option<String> {
-        if values.len() != fields.len() {
-            self.span.sess.span_bug(span,
-                                    &format!("Mismatch between length of fields for '{}', \
-                                              expected '{}', found '{}'",
-                                             kind,
-                                             fields.len(),
-                                             values.len()));
-        }
-
-        let values = values.iter().map(|s| {
-            // Never take more than 1020 chars
-            if s.len() > 1020 {
-                &s[..1020]
-            } else {
-                &s[..]
-            }
-        });
-
-        let pairs = fields.iter().zip(values);
-        let strs = pairs.map(|(f, v)| format!(",{},\"{}\"", f, escape(String::from(v))));
-        Some(strs.fold(String::new(),
-                       |mut s, ss| {
-                           s.push_str(&ss[..]);
-                           s
-                       }))
-    }
-
-    pub fn record_without_span(&mut self, kind: Row, values: Vec<String>, span: Span) {
-        let (label, ref fields, needs_span, dump_spans) = FmtStrs::lookup_row(kind);
-
-        if needs_span {
-            self.span.sess.span_bug(span,
-                                    &format!("Called record_without_span for '{}' which does \
-                                              requires a span",
-                                             label));
-        }
-        assert!(!dump_spans);
-
-        if self.recorder.dump_spans {
-            return;
-        }
-
-        let values_str = match self.make_values_str(label, fields, values, span) {
-            Some(vs) => vs,
-            None => return,
-        };
-
-        let mut result = String::from(label);
-        result.push_str(&values_str[..]);
-        result.push_str("\n");
-        self.recorder.record(&result[..]);
-    }
-
-    pub fn record_with_span(&mut self,
-                            kind: Row,
-                            span: Span,
-                            sub_span: Span,
-                            values: Vec<String>) {
-        let (label, ref fields, needs_span, dump_spans) = FmtStrs::lookup_row(kind);
-
-        if self.recorder.dump_spans {
-            if dump_spans {
-                self.recorder.dump_span(self.span.clone(), label, span, Some(sub_span));
-            }
-            return;
-        }
-
-        if !needs_span {
-            self.span.sess.span_bug(span,
-                                    &format!("Called record_with_span for '{}' which does not \
-                                              require a span",
-                                             label));
-        }
-
-        let values_str = match self.make_values_str(label, fields, values, span) {
-            Some(vs) => vs,
-            None => return,
-        };
-        let result = format!("{},{}{}\n",
-                             label,
-                             self.span.extent_str(sub_span),
-                             values_str);
-        self.recorder.record(&result[..]);
-    }
-
-    pub fn check_and_record(&mut self,
-                            kind: Row,
-                            span: Span,
-                            sub_span: Option<Span>,
-                            values: Vec<String>) {
-        filter!(self.span, sub_span, span);
-        match sub_span {
-            Some(sub_span) => self.record_with_span(kind, span, sub_span, values),
-            None => {
-                let (label, _, _, _) = FmtStrs::lookup_row(kind);
-                self.span.report_span_err(label, span);
-            }
-        }
-    }
-
-    pub fn variable_str(&mut self,
-                        span: Span,
-                        sub_span: Option<Span>,
-                        id: NodeId,
-                        name: &str,
-                        value: &str,
-                        typ: &str) {
-        // Getting a fully qualified name for a variable is hard because in
-        // the local case they can be overridden in one block and there is no nice way
-        // to refer to such a scope in english, so we just hack it by appending the
-        // variable def's node id
-        let mut qualname = String::from(name);
-        qualname.push_str("$");
-        qualname.push_str(&id.to_string());
-        let id = self.normalize_node_id(id);
-        self.check_and_record(Variable,
-                              span,
-                              sub_span,
-                              svec!(id, name, qualname, value, typ, 0));
-    }
-
-    // formal parameters
-    pub fn formal_str(&mut self,
-                      span: Span,
-                      sub_span: Option<Span>,
-                      id: NodeId,
-                      fn_name: &str,
-                      name: &str,
-                      typ: &str) {
-        let mut qualname = String::from(fn_name);
-        qualname.push_str("::");
-        qualname.push_str(name);
-        let id = self.normalize_node_id(id);
-        self.check_and_record(Variable,
-                              span,
-                              sub_span,
-                              svec!(id, name, qualname, "", typ, 0));
-    }
-
-    // value is the initialising expression of the static if it is not mut, otherwise "".
-    pub fn static_str(&mut self,
-                      span: Span,
-                      sub_span: Option<Span>,
-                      id: NodeId,
-                      name: &str,
-                      qualname: &str,
-                      value: &str,
-                      typ: &str,
-                      scope_id: NodeId) {
-        let id = self.normalize_node_id(id);
-        let scope_id = self.normalize_node_id(scope_id);
-        self.check_and_record(Variable,
-                              span,
-                              sub_span,
-                              svec!(id, name, qualname, value, typ, scope_id));
-    }
-
-    pub fn field_str(&mut self,
-                     span: Span,
-                     sub_span: Option<Span>,
-                     id: NodeId,
-                     name: &str,
-                     qualname: &str,
-                     typ: &str,
-                     scope_id: NodeId) {
-        let id = self.normalize_node_id(id);
-        let scope_id = self.normalize_node_id(scope_id);
-        self.check_and_record(Variable,
-                              span,
-                              sub_span,
-                              svec!(id, name, qualname, "", typ, scope_id));
-    }
-
-    pub fn enum_str(&mut self,
-                    span: Span,
-                    sub_span: Option<Span>,
-                    id: NodeId,
-                    name: &str,
-                    scope_id: NodeId,
-                    value: &str) {
-        let id = self.normalize_node_id(id);
-        let scope_id = self.normalize_node_id(scope_id);
-        self.check_and_record(Enum, span, sub_span, svec!(id, name, scope_id, value));
-    }
-
-    pub fn tuple_variant_str(&mut self,
-                             span: Span,
-                             sub_span: Option<Span>,
-                             id: NodeId,
-                             name: &str,
-                             qualname: &str,
-                             typ: &str,
-                             val: &str,
-                             scope_id: NodeId) {
-        let id = self.normalize_node_id(id);
-        let scope_id = self.normalize_node_id(scope_id);
-        self.check_and_record(Variant,
-                              span,
-                              sub_span,
-                              svec!(id, name, qualname, typ, val, scope_id));
-    }
-
-    pub fn struct_variant_str(&mut self,
-                              span: Span,
-                              sub_span: Option<Span>,
-                              id: NodeId,
-                              name: &str,
-                              typ: &str,
-                              val: &str,
-                              scope_id: NodeId) {
-        let id = self.normalize_node_id(id);
-        let ctor_id = id;
-        let scope_id = self.normalize_node_id(scope_id);
-        self.check_and_record(VariantStruct,
-                              span,
-                              sub_span,
-                              svec!(id, ctor_id, name, typ, val, scope_id));
-    }
-
-    pub fn fn_str(&mut self,
-                  span: Span,
-                  sub_span: Option<Span>,
-                  id: NodeId,
-                  name: &str,
-                  scope_id: NodeId) {
-        let id = self.normalize_node_id(id);
-        let scope_id = self.normalize_node_id(scope_id);
-        self.check_and_record(Function,
-                              span,
-                              sub_span,
-                              svec!(id, name, "", "", scope_id));
-    }
-
-    pub fn method_str(&mut self,
-                      span: Span,
-                      sub_span: Option<Span>,
-                      id: NodeId,
-                      name: &str,
-                      decl_id: Option<DefId>,
-                      scope_id: NodeId) {
-        let id = self.normalize_node_id(id);
-        let scope_id = self.normalize_node_id(scope_id);
-        let values = match decl_id {
-            Some(decl_id) => svec!(id,
-                                   name,
-                                   decl_id.index.as_usize(),
-                                   decl_id.krate,
-                                   scope_id),
-            None => svec!(id, name, "", "", scope_id),
-        };
-        self.check_and_record(Function, span, sub_span, values);
-    }
-
-    pub fn method_decl_str(&mut self,
-                           span: Span,
-                           sub_span: Option<Span>,
-                           id: NodeId,
-                           name: &str,
-                           scope_id: NodeId) {
-        let id = self.normalize_node_id(id);
-        let scope_id = self.normalize_node_id(scope_id);
-        self.check_and_record(MethodDecl, span, sub_span, svec!(id, name, scope_id));
-    }
-
-    pub fn struct_str(&mut self,
-                      span: Span,
-                      sub_span: Option<Span>,
-                      id: NodeId,
-                      ctor_id: NodeId,
-                      name: &str,
-                      scope_id: NodeId,
-                      value: &str) {
-        let id = self.normalize_node_id(id);
-        let scope_id = self.normalize_node_id(scope_id);
-        let ctor_id = self.normalize_node_id(ctor_id);
-        self.check_and_record(Struct,
-                              span,
-                              sub_span,
-                              svec!(id, ctor_id, name, scope_id, value));
-    }
-
-    pub fn trait_str(&mut self,
-                     span: Span,
-                     sub_span: Option<Span>,
-                     id: NodeId,
-                     name: &str,
-                     scope_id: NodeId,
-                     value: &str) {
-        let id = self.normalize_node_id(id);
-        let scope_id = self.normalize_node_id(scope_id);
-        self.check_and_record(Trait, span, sub_span, svec!(id, name, scope_id, value));
-    }
-
-    pub fn impl_str(&mut self,
-                    span: Span,
-                    sub_span: Option<Span>,
-                    id: NodeId,
-                    ref_id: Option<DefId>,
-                    trait_id: Option<DefId>,
-                    scope_id: NodeId) {
-        let id = self.normalize_node_id(id);
-        let scope_id = self.normalize_node_id(scope_id);
-        let ref_id = ref_id.unwrap_or(CRATE_ROOT_DEF_ID);
-        let trait_id = trait_id.unwrap_or(CRATE_ROOT_DEF_ID);
-        self.check_and_record(Impl,
-                              span,
-                              sub_span,
-                              svec!(id,
-                                    ref_id.index.as_usize(),
-                                    ref_id.krate,
-                                    trait_id.index.as_usize(),
-                                    trait_id.krate,
-                                    scope_id));
-    }
-
-    pub fn mod_str(&mut self,
-                   span: Span,
-                   sub_span: Option<Span>,
-                   id: NodeId,
-                   name: &str,
-                   parent: NodeId,
-                   filename: &str) {
-        let id = self.normalize_node_id(id);
-        let parent = self.normalize_node_id(parent);
-        self.check_and_record(Module,
-                              span,
-                              sub_span,
-                              svec!(id, name, parent, filename));
-    }
-
-    pub fn use_alias_str(&mut self,
-                         span: Span,
-                         sub_span: Option<Span>,
-                         id: NodeId,
-                         mod_id: Option<DefId>,
-                         name: &str,
-                         parent: NodeId) {
-        let id = self.normalize_node_id(id);
-        let parent = self.normalize_node_id(parent);
-        let mod_id = mod_id.unwrap_or(CRATE_ROOT_DEF_ID);
-        self.check_and_record(UseAlias,
-                              span,
-                              sub_span,
-                              svec!(id, mod_id.index.as_usize(), mod_id.krate, name, parent));
-    }
-
-    pub fn use_glob_str(&mut self,
-                        span: Span,
-                        sub_span: Option<Span>,
-                        id: NodeId,
-                        values: &str,
-                        parent: NodeId) {
-        let id = self.normalize_node_id(id);
-        let parent = self.normalize_node_id(parent);
-        self.check_and_record(UseGlob, span, sub_span, svec!(id, values, parent));
-    }
-
-    pub fn extern_crate_str(&mut self,
-                            span: Span,
-                            sub_span: Option<Span>,
-                            id: NodeId,
-                            cnum: ast::CrateNum,
-                            name: &str,
-                            loc: &str,
-                            parent: NodeId) {
-        let id = self.normalize_node_id(id);
-        let parent = self.normalize_node_id(parent);
-        self.check_and_record(ExternCrate,
-                              span,
-                              sub_span,
-                              svec!(id, name, loc, cnum, parent));
-    }
-
-    pub fn inherit_str(&mut self,
-                       span: Span,
-                       sub_span: Option<Span>,
-                       base_id: DefId,
-                       deriv_id: NodeId) {
-        let deriv_id = self.normalize_node_id(deriv_id);
-        self.check_and_record(Inheritance,
-                              span,
-                              sub_span,
-                              svec!(base_id.index.as_usize(), base_id.krate, deriv_id, 0));
-    }
-
-    pub fn fn_call_str(&mut self,
-                       span: Span,
-                       sub_span: Option<Span>,
-                       id: DefId,
-                       scope_id: NodeId) {
-        let scope_id = self.normalize_node_id(scope_id);
-        self.check_and_record(FnCall,
-                              span,
-                              sub_span,
-                              svec!(id.index.as_usize(), id.krate, "", scope_id));
-    }
-
-    pub fn meth_call_str(&mut self,
-                         span: Span,
-                         sub_span: Option<Span>,
-                         defid: Option<DefId>,
-                         declid: Option<DefId>,
-                         scope_id: NodeId) {
-        let scope_id = self.normalize_node_id(scope_id);
-        let defid = defid.unwrap_or(CRATE_ROOT_DEF_ID);
-        let (dcn, dck) = match declid {
-            Some(declid) => (s!(declid.index.as_usize()), s!(declid.krate)),
-            None => ("".to_string(), "".to_string()),
-        };
-        self.check_and_record(MethodCall,
-                              span,
-                              sub_span,
-                              svec!(defid.index.as_usize(), defid.krate, dcn, dck, scope_id));
-    }
-
-    pub fn sub_mod_ref_str(&mut self, span: Span, sub_span: Span, qualname: &str, parent: NodeId) {
-        let parent = self.normalize_node_id(parent);
-        self.record_with_span(ModRef, span, sub_span, svec!(0, 0, qualname, parent));
-    }
-
-    pub fn typedef_str(&mut self,
-                       span: Span,
-                       sub_span: Option<Span>,
-                       id: NodeId,
-                       qualname: &str,
-                       value: &str) {
-        let id = self.normalize_node_id(id);
-        self.check_and_record(Typedef, span, sub_span, svec!(id, qualname, value));
-    }
-
-    pub fn crate_str(&mut self, span: Span, name: &str, crate_root: &str) {
-        self.record_with_span(Crate, span, span, svec!(name, crate_root));
-    }
-
-    pub fn external_crate_str(&mut self, span: Span, name: &str, num: ast::CrateNum) {
-        let lo_loc = self.span.sess.codemap().lookup_char_pos(span.lo);
-        self.record_without_span(ExternalCrate,
-                                 svec!(name, num, SpanUtils::make_path_string(&lo_loc.file.name)),
-                                 span);
-    }
-
-    pub fn sub_type_ref_str(&mut self, span: Span, sub_span: Span, qualname: &str) {
-        self.record_with_span(TypeRef, span, sub_span, svec!(0, 0, qualname, 0));
-    }
-
-    // A slightly generic function for a reference to an item of any kind.
-    pub fn ref_str(&mut self,
-                   kind: Row,
-                   span: Span,
-                   sub_span: Option<Span>,
-                   id: DefId,
-                   scope_id: NodeId) {
-        let scope_id = self.normalize_node_id(scope_id);
-        self.check_and_record(kind,
-                              span,
-                              sub_span,
-                              svec!(id.index.as_usize(), id.krate, "", scope_id));
-    }
-
-    pub fn macro_str(&mut self, span: Span, sub_span: Span, name: String, qualname: String) {
-        self.record_with_span(Macro, span, sub_span, svec!(name, qualname));
-    }
-
-    pub fn macro_use_str(&mut self,
-                         span: Span,
-                         sub_span: Span,
-                         name: String,
-                         qualname: String,
-                         scope_id: NodeId) {
-        let scope_id = self.normalize_node_id(scope_id);
-        self.record_with_span(MacroUse, span, sub_span,
-                              svec!(name, qualname, scope_id));
-    }
-}