[misc] Remove namespace macros

c_api/src/taichi_llvm_impl.h

@@ -2,13 +2,11 @@
 
 #include "taichi_core_impl.h"
 
-namespace taichi {
-namespace lang {
+namespace taichi::lang {
 class LlvmRuntimeExecutor;
 class MemoryPool;
 struct CompileConfig;
-}  // namespace lang
-}  // namespace taichi
+}  // namespace taichi::lang
 
 namespace capi {
 

docs/lang/articles/contribution/contributor_guide.md

@@ -313,7 +313,6 @@ Below we highlight some of the most widely used styles.
 - Constant names should use the camel case, with a prefix `k`, for example, `constexpr int kTaichiMaxNumArgs = 64;`.
 - Macros should start with `TI_`, for example, `TI_NOT_IMPLEMENTED`.
   - In general, avoid using macros as much as possible.
-  - Avoid using `TI_NAMESPACE_BEGIN/END` in the new code.
 
 ### Rule of thumbs
 

taichi/analysis/alias_analysis.cpp

@@ -2,7 +2,7 @@
 #include "taichi/ir/analysis.h"
 #include "taichi/ir/statements.h"
 
-TLANG_NAMESPACE_BEGIN
+namespace taichi::lang {
 
 namespace irpass::analysis {
 
@@ -168,4 +168,4 @@ bool maybe_same_address(Stmt *var1, Stmt *var2) {
 
 }  // namespace irpass::analysis
 
-TLANG_NAMESPACE_END
+}  // namespace taichi::lang

taichi/analysis/arithmetic_interpretor.cpp

@@ -7,8 +7,7 @@
 #include "taichi/ir/type_utils.h"
 #include "taichi/ir/visitors.h"
 
-namespace taichi {
-namespace lang {
+namespace taichi::lang {
 namespace {
 
 using CodeRegion = ArithmeticInterpretor::CodeRegion;
@@ -180,5 +179,4 @@ std::optional<TypedConstant> ArithmeticInterpretor::evaluate(
   return ev.run(region, init_ctx);
 }
 
-}  // namespace lang
-}  // namespace taichi
+}  // namespace taichi::lang

taichi/analysis/arithmetic_interpretor.h

@@ -7,8 +7,7 @@
 #include "taichi/ir/statements.h"
 #include "taichi/ir/type.h"
 
-namespace taichi {
-namespace lang {
+namespace taichi::lang {
 
 /**
  * Interprets a sequence of CHI IR statements within a block (acts like a
@@ -96,5 +95,4 @@ class ArithmeticInterpretor {
                                         const EvalContext &init_ctx) const;
 };
 
-}  // namespace lang
-}  // namespace taichi
+}  // namespace taichi::lang

taichi/analysis/bls_analyzer.cpp

@@ -3,8 +3,7 @@
 #include "taichi/system/profiler.h"
 #include "taichi/ir/analysis.h"
 
-namespace taichi {
-namespace lang {
+namespace taichi::lang {
 
 BLSAnalyzer::BLSAnalyzer(OffloadedStmt *for_stmt, ScratchPads *pads)
     : for_stmt_(for_stmt), pads_(pads) {
@@ -106,5 +105,4 @@ bool BLSAnalyzer::run() {
   return analysis_ok_;
 }
 
-}  // namespace lang
-}  // namespace taichi
+}  // namespace taichi::lang

taichi/analysis/bls_analyzer.h

@@ -4,8 +4,7 @@
 #include "taichi/ir/statements.h"
 #include "taichi/ir/scratch_pad.h"
 
-namespace taichi {
-namespace lang {
+namespace taichi::lang {
 
 // Figure out accessed SNodes, and their ranges in this for stmt
 class BLSAnalyzer : public BasicStmtVisitor {
@@ -56,5 +55,4 @@ class BLSAnalyzer : public BasicStmtVisitor {
   bool analysis_ok_{true};
 };
 
-}  // namespace lang
-}  // namespace taichi
+}  // namespace taichi::lang

taichi/analysis/build_cfg.cpp

@@ -3,8 +3,7 @@
 #include "taichi/ir/statements.h"
 #include "taichi/program/function.h"
 
-namespace taichi {
-namespace lang {
+namespace taichi::lang {
 
 struct CFGFuncKey {
   FunctionKey func_key{"", -1, -1};
@@ -16,8 +15,7 @@ struct CFGFuncKey {
   }
 };
 
-}  // namespace lang
-}  // namespace taichi
+}  // namespace taichi::lang
 
 namespace std {
 template <>
@@ -29,8 +27,7 @@ struct hash<taichi::lang::CFGFuncKey> {
 };
 }  // namespace std
 
-namespace taichi {
-namespace lang {
+namespace taichi::lang {
 
 /**
  * Build a control-flow graph. The resulting graph is guaranteed to have an
@@ -460,5 +457,4 @@ std::unique_ptr<ControlFlowGraph> build_cfg(IRNode *root) {
 }
 }  // namespace irpass::analysis
 
-}  // namespace lang
-}  // namespace taichi
+}  // namespace taichi::lang

taichi/analysis/check_fields_registered.cpp

@@ -2,7 +2,7 @@
 #include "taichi/ir/analysis.h"
 #include "taichi/ir/visitors.h"
 
-TLANG_NAMESPACE_BEGIN
+namespace taichi::lang {
 
 class FieldsRegisteredChecker : public BasicStmtVisitor {
  public:
@@ -33,4 +33,4 @@ void check_fields_registered(IRNode *root) {
 }
 }  // namespace irpass::analysis
 
-TLANG_NAMESPACE_END
+}  // namespace taichi::lang

taichi/analysis/clone.cpp

@@ -7,7 +7,7 @@
 
 #include <unordered_map>
 
-TLANG_NAMESPACE_BEGIN
+namespace taichi::lang {
 
 class IRCloner : public IRVisitor {
  private:
@@ -139,4 +139,4 @@ std::unique_ptr<IRNode> clone(IRNode *root, Kernel *kernel) {
 }
 }  // namespace irpass::analysis
 
-TLANG_NAMESPACE_END
+}  // namespace taichi::lang

taichi/analysis/constexpr_propagation.cpp

@@ -4,7 +4,7 @@
 #include <unordered_set>
 #include <functional>
 
-TLANG_NAMESPACE_BEGIN
+namespace taichi::lang {
 
 namespace {
 
@@ -106,4 +106,4 @@ std::unordered_set<Stmt *> constexpr_prop(
 }
 }  // namespace irpass::analysis
 
-TLANG_NAMESPACE_END
+}  // namespace taichi::lang

taichi/analysis/count_statements.cpp

@@ -2,7 +2,7 @@
 #include "taichi/ir/analysis.h"
 #include "taichi/ir/visitors.h"
 
-TLANG_NAMESPACE_BEGIN
+namespace taichi::lang {
 
 // Count all statements (including containers)
 class StmtCounter : public BasicStmtVisitor {
@@ -41,4 +41,4 @@ int count_statements(IRNode *root) {
 }
 }  // namespace irpass::analysis
 
-TLANG_NAMESPACE_END
+}  // namespace taichi::lang

taichi/analysis/data_source_analysis.cpp

@@ -2,7 +2,7 @@
 #include "taichi/ir/analysis.h"
 #include "taichi/ir/statements.h"
 
-TLANG_NAMESPACE_BEGIN
+namespace taichi::lang {
 
 namespace irpass::analysis {
 
@@ -77,4 +77,4 @@ std::vector<Stmt *> get_store_destination(Stmt *store_stmt) {
 
 }  // namespace irpass::analysis
 
-TLANG_NAMESPACE_END
+}  // namespace taichi::lang

taichi/analysis/detect_fors_with_break.cpp

@@ -5,7 +5,7 @@
 
 #include <unordered_set>
 
-TLANG_NAMESPACE_BEGIN
+namespace taichi::lang {
 
 class DetectForsWithBreak : public BasicStmtVisitor {
  public:
@@ -50,4 +50,4 @@ std::unordered_set<Stmt *> detect_fors_with_break(IRNode *root) {
 }
 }  // namespace irpass::analysis
 
-TLANG_NAMESPACE_END
+}  // namespace taichi::lang

taichi/analysis/gather_deactivations.cpp

@@ -3,7 +3,7 @@
 #include "taichi/ir/statements.h"
 #include "taichi/ir/visitors.h"
 
-TLANG_NAMESPACE_BEGIN
+namespace taichi::lang {
 
 class GatherDeactivations : public BasicStmtVisitor {
  public:
@@ -36,4 +36,4 @@ std::unordered_set<SNode *> gather_deactivations(IRNode *root) {
 }
 }  // namespace irpass::analysis
 
-TLANG_NAMESPACE_END
+}  // namespace taichi::lang

taichi/analysis/gather_mesh_thread_local.cpp

@@ -5,7 +5,7 @@
 #include "taichi/ir/analysis.h"
 #include "taichi/ir/statements.h"
 
-TLANG_NAMESPACE_BEGIN
+namespace taichi::lang {
 
 using MeshElementTypeSet = std::unordered_set<mesh::MeshElementType>;
 
@@ -79,4 +79,4 @@ gather_mesh_thread_local(OffloadedStmt *offload, const CompileConfig &config) {
 
 }  // namespace irpass::analysis
 
-TLANG_NAMESPACE_END
+}  // namespace taichi::lang

taichi/analysis/gather_meshfor_relation_types.cpp

@@ -5,7 +5,7 @@
 #include "taichi/ir/analysis.h"
 #include "taichi/ir/statements.h"
 
-TLANG_NAMESPACE_BEGIN
+namespace taichi::lang {
 
 namespace irpass::analysis {
 
@@ -62,4 +62,4 @@ void gather_meshfor_relation_types(IRNode *node) {
 
 }  // namespace irpass::analysis
 
-TLANG_NAMESPACE_END
+}  // namespace taichi::lang

taichi/analysis/gather_snode_read_writes.cpp

@@ -4,7 +4,7 @@
 #include "taichi/ir/analysis.h"
 #include "taichi/ir/statements.h"
 
-TLANG_NAMESPACE_BEGIN
+namespace taichi::lang {
 
 namespace irpass::analysis {
 
@@ -40,4 +40,4 @@ gather_snode_read_writes(IRNode *root) {
 }
 }  // namespace irpass::analysis
 
-TLANG_NAMESPACE_END
+}  // namespace taichi::lang

taichi/analysis/gather_statements.cpp

@@ -2,7 +2,7 @@
 #include "taichi/ir/analysis.h"
 #include "taichi/ir/visitors.h"
 
-TLANG_NAMESPACE_BEGIN
+namespace taichi::lang {
 
 class StmtSearcher : public BasicStmtVisitor {
  private:
@@ -37,4 +37,4 @@ std::vector<Stmt *> gather_statements(IRNode *root,
 }
 }  // namespace irpass::analysis
 
-TLANG_NAMESPACE_END
+}  // namespace taichi::lang

taichi/analysis/gather_uniquely_accessed_pointers.cpp

@@ -5,7 +5,7 @@
 #include "taichi/ir/visitors.h"
 #include <algorithm>
 
-TLANG_NAMESPACE_BEGIN
+namespace taichi::lang {
 
 class LoopUniqueStmtSearcher : public BasicStmtVisitor {
  private:
@@ -385,4 +385,4 @@ void gather_uniquely_accessed_bit_structs(IRNode *root, AnalysisManager *amgr) {
 }
 }  // namespace irpass::analysis
 
-TLANG_NAMESPACE_END
+}  // namespace taichi::lang

taichi/analysis/gather_uniquely_accessed_pointers.h

@@ -2,8 +2,7 @@
 
 #include "taichi/ir/pass.h"
 
-namespace taichi {
-namespace lang {
+namespace taichi::lang {
 
 class GatherUniquelyAccessedBitStructsPass : public Pass {
  public:
@@ -16,5 +15,4 @@ class GatherUniquelyAccessedBitStructsPass : public Pass {
   };
 };
 
-}  // namespace lang
-}  // namespace taichi
+}  // namespace taichi::lang

taichi/analysis/gather_used_atomics.cpp

@@ -4,7 +4,7 @@
 #include "taichi/ir/visitors.h"
 #include <unordered_set>
 
-TLANG_NAMESPACE_BEGIN
+namespace taichi::lang {
 
 class UsedAtomicsSearcher : public BasicStmtVisitor {
  private:
@@ -49,4 +49,4 @@ std::unique_ptr<std::unordered_set<AtomicOpStmt *>> gather_used_atomics(
 }
 }  // namespace irpass::analysis
 
-TLANG_NAMESPACE_END
+}  // namespace taichi::lang

taichi/analysis/gen_offline_cache_key.cpp

@@ -8,8 +8,7 @@
 #include "taichi/program/function.h"
 #include "taichi/program/program.h"
 
-namespace taichi {
-namespace lang {
+namespace taichi::lang {
 
 namespace {
 
@@ -656,5 +655,4 @@ void gen_offline_cache_key(Program *prog, IRNode *ast, std::ostream *os) {
   ASTSerializer::run(prog, ast, os);
 }
 
-}  // namespace lang
-}  // namespace taichi
+}  // namespace taichi::lang

taichi/analysis/has_store_or_atomic.cpp

@@ -3,7 +3,7 @@
 #include "taichi/ir/statements.h"
 #include "taichi/ir/visitors.h"
 
-TLANG_NAMESPACE_BEGIN
+namespace taichi::lang {
 
 // Find if there is a store (or AtomicOpStmt).
 class LocalStoreSearcher : public BasicStmtVisitor {
@@ -54,4 +54,4 @@ bool has_store_or_atomic(IRNode *root, const std::vector<Stmt *> &vars) {
 }
 }  // namespace irpass::analysis
 
-TLANG_NAMESPACE_END
+}  // namespace taichi::lang