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Move most Cursor methods into a CursorBase trait.

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The Cursor navigation methods all just depend on the cursor's position
and layout reference. Make a CursorBase trait that provides access to
this information with methods and implement the navigation methods on
top of that.

This makes it possible to have multiple types implement the cursor
interface.
This commit is contained in:
Jakob Stoklund Olesen
2017-08-03 16:43:47 -07:00
parent f175882030
commit dba0df787c
20 changed files with 136 additions and 110 deletions
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5
lib/frontend/src/ssa.rs
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@@ -5,7 +5,8 @@
//! In: Jhala R., De Bosschere K. (eds) Compiler Construction. CC 2013.
//! Lecture Notes in Computer Science, vol 7791. Springer, Berlin, Heidelberg
use cretonne::ir::{Ebb, Value, Inst, Type, DataFlowGraph, JumpTables, Layout, Cursor, InstBuilder};
use cretonne::ir::{Ebb, Value, Inst, Type, DataFlowGraph, JumpTables, Layout, Cursor, CursorBase,
InstBuilder};
use cretonne::ir::instructions::BranchInfo;
use std::hash::Hash;
use cretonne::entity_map::{EntityMap, PrimaryEntityData};
@@ -607,7 +608,7 @@ impl<Variable> SSABuilder<Variable>
#[cfg(test)]
mod tests {
use cretonne::entity_ref::EntityRef;
use cretonne::ir::{Function, InstBuilder, Cursor, Inst, JumpTableData};
use cretonne::ir::{Function, InstBuilder, Cursor, CursorBase, Inst, JumpTableData};
use cretonne::ir::types::*;
use cretonne::verify_function;
use cretonne::ir::instructions::BranchInfo;