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[vala/wip/transform: 34/50] Drop build_context from CodeBuilder

commit d7b4688baeae4fa60e9b3ddbd146c3006bed4ffc
Author: Luca Bruno <lucabru src gnome org>
Date:   Wed Jan 4 15:25:04 2012 +0100

    Drop build_context from CodeBuilder

 codegen/valagdbusclienttransformer.vala |    4 +-
 codegen/valagdbusservertransformer.vala |    4 +-
 codegen/valagvarianttransformer.vala    |   24 +++---
 vala/valacodebuilder.vala               |  148 +++++++++++++-----------------
 4 files changed, 80 insertions(+), 100 deletions(-)
---
diff --git a/codegen/valagdbusclienttransformer.vala b/codegen/valagdbusclienttransformer.vala
index 84456fc..6d585db 100644
--- a/codegen/valagdbusclienttransformer.vala
+++ b/codegen/valagdbusclienttransformer.vala
@@ -187,7 +187,7 @@ public class Vala.GDBusClientTransformer : GVariantTransformer {
 		m.access = SymbolAccessibility.PRIVATE;
 		m.add_parameter (new Parameter ("parameters", data_type ("GLib.Variant", false), sig.source_reference));
 		proxy_class.add_method (m);
-		b.push_method (m);
+		push_builder (new CodeBuilder.for_subroutine (m));
 
 		var iter = b.add_temp_declaration (null, expression ("parameters.iterator ()"));
 		var call = new MethodCall (expression (sig.name), sig.source_reference);
@@ -202,7 +202,7 @@ public class Vala.GDBusClientTransformer : GVariantTransformer {
 		}
 		b.add_expression (call);
 
-		b.pop_method ();
+		pop_builder ();
 		return m.name;
 	}
 
diff --git a/codegen/valagdbusservertransformer.vala b/codegen/valagdbusservertransformer.vala
index 16570c7..618fa6f 100644
--- a/codegen/valagdbusservertransformer.vala
+++ b/codegen/valagdbusservertransformer.vala
@@ -43,7 +43,7 @@ public class Vala.GDBusServerTransformer : GDBusClientTransformer {
 		wrapper.add_parameter (new Parameter ("object", object_type));
 		wrapper.add_parameter (new Parameter ("arguments", data_type ("GLib.Variant", false)));
 		wrapper.add_parameter (new Parameter ("invocation", data_type ("GLib.DBusMethodInvocation", false)));
-		b.push_method (wrapper);
+		push_builder (new CodeBuilder.for_subroutine (wrapper));
 
 		var iter = b.add_temp_declaration (null, expression ("arguments.iterator ()"));
 
@@ -136,7 +136,7 @@ public class Vala.GDBusServerTransformer : GDBusClientTransformer {
 			check (ready);
 		}
 
-		b.pop_method ();
+		pop_builder ();
 		check (wrapper);
 		return wrapper.name;
 	}
diff --git a/codegen/valagvarianttransformer.vala b/codegen/valagvarianttransformer.vala
index f1b9e51..694bfe0 100644
--- a/codegen/valagvarianttransformer.vala
+++ b/codegen/valagvarianttransformer.vala
@@ -147,7 +147,7 @@ public class Vala.GVariantTransformer : CodeTransformer {
 		Method m;
 		if (!wrapper_method (data_type ("GLib.Variant"), "gvariant_serialize_array "+array_type.to_string(), out m)) {
 			m.add_parameter (new Parameter ("array", copy_type (array_type, false), b.source_reference));
-			b.push_method (m);
+			push_builder (new CodeBuilder.for_subroutine (m));
 
 			string[] indices = new string[array_type.rank];
 			for (int dim=1; dim <= array_type.rank; dim++) {
@@ -155,7 +155,7 @@ public class Vala.GVariantTransformer : CodeTransformer {
 			}
 			b.add_return (serialize_array_dim (array_type, 1, indices, "array"));
 
-			b.pop_method ();
+			pop_builder ();
 			check (m);
 		}
 		var call = (MethodCall) expression (m.name+"()");
@@ -215,7 +215,7 @@ public class Vala.GVariantTransformer : CodeTransformer {
 		var type = context.analyzer.get_data_type_for_symbol (st);
 		if (!wrapper_method (data_type ("GLib.Variant"), "gvariant_serialize_struct "+type.to_string(), out m)) {
 			m.add_parameter (new Parameter ("st", type, b.source_reference));
-			b.push_method (m);
+			push_builder (new CodeBuilder.for_subroutine (m));
 
 			var builderinit = expression ("new GLib.VariantBuilder (GLib.VariantType.TUPLE)");
 			var builder = b.add_temp_declaration (null, builderinit);
@@ -229,7 +229,7 @@ public class Vala.GVariantTransformer : CodeTransformer {
 			}
 			b.add_return (expression (@"$builder.end ()"));
 
-			b.pop_method ();
+			pop_builder ();
 			check (m);
 		}
 
@@ -242,7 +242,7 @@ public class Vala.GVariantTransformer : CodeTransformer {
 		Method m;
 		if (!wrapper_method (data_type ("GLib.Variant"), "gvariant_serialize_hash_table "+type.to_string(), out m)) {
 			m.add_parameter (new Parameter ("ht", copy_type (type, false), b.source_reference));
-			b.push_method (m);
+			push_builder (new CodeBuilder.for_subroutine (m));
 
 			var builderinit = expression (@"new GLib.VariantBuilder (new GLib.VariantType (\"$(get_type_signature (type))\"))");
 			var builder = b.add_temp_declaration (null, builderinit);
@@ -251,7 +251,7 @@ public class Vala.GVariantTransformer : CodeTransformer {
 			b.add_expression (for_each);
 			b.add_return (expression (@"$builder.end ()"));
 
-			b.pop_method ();
+			pop_builder ();
 			check (m);
 		}
 		var call = (MethodCall) expression (m.name+"()");
@@ -273,7 +273,7 @@ public class Vala.GVariantTransformer : CodeTransformer {
 		Method m;
 		if (!wrapper_method (copy_type (array_type, true), "gvariant_deserialize_array "+array_type.to_string(), out m)) {
 			m.add_parameter (new Parameter ("variant", data_type ("GLib.Variant", false), b.source_reference));
-			b.push_method (m);
+			push_builder (new CodeBuilder.for_subroutine (m));
 
 			var iterator = b.add_temp_declaration (data_type ("GLib.VariantIter"), expression ("variant.iterator ()"));
 
@@ -294,7 +294,7 @@ public class Vala.GVariantTransformer : CodeTransformer {
 			deserialize_array_dim (array_type, "variant", indices, 1, array);
 			b.add_return (expression (array));
 
-			b.pop_method ();
+			pop_builder ();
 			check (m);
 		}
 		var call = (MethodCall) expression (m.name+"()");
@@ -338,7 +338,7 @@ public class Vala.GVariantTransformer : CodeTransformer {
 		type.value_owned = true;
 		if (!wrapper_method (type, "gvariant_deserialize_struct "+type.to_string(), out m)) {
 			m.add_parameter (new Parameter ("variant", data_type ("GLib.Variant", false), b.source_reference));
-			b.push_method (m);
+			push_builder (new CodeBuilder.for_subroutine (m));
 
 			var iterator = b.add_temp_declaration (data_type ("GLib.VariantIter"), expression (@"variant.iterator ()"));
 
@@ -352,7 +352,7 @@ public class Vala.GVariantTransformer : CodeTransformer {
 				b.add_assignment (expression (@"$result.$(f.name)"), expression (@"($(f.variable_type)) ($iterator.next_value ())"));
 			}
 			b.add_return (expression (result));
-			b.pop_method ();
+			pop_builder ();
 			check (m);
 		}
 		var call = (MethodCall) expression (m.name+"()");
@@ -364,7 +364,7 @@ public class Vala.GVariantTransformer : CodeTransformer {
 		Method m;
 		if (!wrapper_method (copy_type (type, true), "gvariant_deserialize_hash_table "+type.to_string(), out m)) {
 			m.add_parameter (new Parameter ("variant", data_type ("GLib.Variant", false), b.source_reference));
-			b.push_method (m);
+			push_builder (new CodeBuilder.for_subroutine (m));
 
 			var iterator = b.add_temp_declaration (data_type ("GLib.VariantIter"), expression (@"variant.iterator ()"));
 
@@ -388,7 +388,7 @@ public class Vala.GVariantTransformer : CodeTransformer {
 			b.close ();
 
 			b.add_return (expression (hash_table));
-			b.pop_method ();
+			pop_builder ();
 			check (m);
 		}
 		var call = (MethodCall) expression (m.name+"()");
diff --git a/vala/valacodebuilder.vala b/vala/valacodebuilder.vala
index f32cca3..19e3590 100644
--- a/vala/valacodebuilder.vala
+++ b/vala/valacodebuilder.vala
@@ -23,119 +23,99 @@
 using GLib;
 
 public class Vala.CodeBuilder {
-	class BuildContext {
-		public Block current_block;
-		public Statement insert_statement;
-		public Block insert_block;
-		public ArrayList<Statement> statement_stack = new ArrayList<Statement> ();
-		public ArrayList<CodeNode> check_nodes = new ArrayList<CodeNode> ();
-	}
-
-	BuildContext build_context;
-	ArrayList<BuildContext> context_stack = new ArrayList<BuildContext> ();
+	public Block current_block;
+	public Statement insert_statement;
+	public Block insert_block;
+	public ArrayList<Statement> statement_stack = new ArrayList<Statement> ();
+	public ArrayList<CodeNode> check_nodes = new ArrayList<CodeNode> ();
 	public SourceReference source_reference;
 
 	public CodeBuilder (CodeContext context, Statement insert_statement, SourceReference source_reference) {
-		build_context = new BuildContext ();
-		build_context.current_block = new Block (source_reference);
-		build_context.insert_statement = insert_statement;
-		build_context.insert_block = context.analyzer.get_insert_block (insert_statement);
+		current_block = new Block (source_reference);
+		insert_statement = insert_statement;
+		insert_block = context.analyzer.get_insert_block (insert_statement);
 		this.source_reference = source_reference;
 
 		var statement_block = context.analyzer.get_current_block (insert_statement);
-		statement_block.insert_before (build_context.insert_statement, build_context.current_block);
-		build_context.insert_statement = build_context.current_block;
-		build_context.check_nodes.add (build_context.current_block);
+		statement_block.insert_before (insert_statement, current_block);
+		insert_statement = current_block;
+		check_nodes.add (current_block);
 	}
 
 	public CodeBuilder.for_subroutine (Subroutine m) {
 		source_reference = m.source_reference;
-		build_context = new BuildContext ();
-		build_context.insert_block = m.body = new Block (source_reference);
-		build_context.insert_statement = build_context.current_block = new Block (source_reference);
-		m.body.add_statement (build_context.current_block);
+		insert_block = m.body = new Block (source_reference);
+		insert_statement = current_block = new Block (source_reference);
+		m.body.add_statement (current_block);
 	}
 
 	public void check (CodeTransformer transformer) {
-		foreach (var node in build_context.check_nodes) {
+		foreach (var node in check_nodes) {
 			transformer.check (node);
 		}
 	}
 
-	public void push_method (Method m) {
-		context_stack.add (build_context);
-		build_context = new BuildContext ();
-		build_context.insert_block = m.body = new Block (source_reference);
-		build_context.insert_statement = build_context.current_block = new Block (source_reference);
-		m.body.add_statement (build_context.current_block);
-	}
-
-	public void pop_method () {
-		build_context = context_stack[context_stack.size - 1];
-		context_stack.remove_at (context_stack.size - 1);
-	}
-
 	public void open_block () {
-		build_context.statement_stack.add (build_context.current_block);
-		var parent_block = build_context.current_block;
+		statement_stack.add (current_block);
+		var parent_block = current_block;
 
-		build_context.current_block = new Block (source_reference);
+		current_block = new Block (source_reference);
 
-		parent_block.add_statement (build_context.current_block);
+		parent_block.add_statement (current_block);
 	}
 
 	public void open_if (Expression condition) {
-		build_context.statement_stack.add (build_context.current_block);
-		var parent_block = build_context.current_block;
+		statement_stack.add (current_block);
+		var parent_block = current_block;
 
-		build_context.current_block = new Block (source_reference);
+		current_block = new Block (source_reference);
 
-		var stmt = new IfStatement (condition, build_context.current_block, null, source_reference);
-		build_context.statement_stack.add (stmt);
+		var stmt = new IfStatement (condition, current_block, null, source_reference);
+		statement_stack.add (stmt);
 
 		parent_block.add_statement (stmt);
 	}
 
 	public void add_else () {
-		build_context.current_block = new Block (source_reference);
+		current_block = new Block (source_reference);
 
-		var stmt = (IfStatement) build_context.statement_stack[build_context.statement_stack.size-1];
+		var stmt = (IfStatement) statement_stack[statement_stack.size-1];
 		assert (stmt.false_statement == null);
-		stmt.false_statement = build_context.current_block;
+		stmt.false_statement = current_block;
 	}
 
 	public void else_if (Expression condition) {
-		var parent_if = (IfStatement) build_context.statement_stack[build_context.statement_stack.size - 1];
+		var parent_if = (IfStatement) statement_stack[statement_stack.size - 1];
 		assert (parent_if.false_statement == null);
 
-		build_context.statement_stack.remove_at (build_context.statement_stack.size - 1);
+		statement_stack.remove_at (statement_stack.size - 1);
 
-		build_context.current_block = new Block (source_reference);
+		current_block = new Block (source_reference);
 
-		var stmt = new IfStatement (condition, build_context.current_block, null, source_reference);
+		var stmt = new IfStatement (condition, current_block, null, source_reference);
 		var block = new Block (source_reference);
 		block.add_statement (stmt);
 		parent_if.false_statement = block;
-		build_context.statement_stack.add (stmt);
+		statement_stack.add (stmt);
 	}
 
 	public void open_while (Expression condition) {
-		build_context.statement_stack.add (build_context.current_block);
-		var parent_block = build_context.current_block;
+		statement_stack.add (current_block);
+		var parent_block = current_block;
 
-		build_context.current_block = new Block (source_reference);
+		current_block = new Block (source_reference);
 
-		var stmt = new WhileStatement (condition, build_context.current_block, source_reference);
+		var stmt = new WhileStatement (condition, current_block, source_reference);
 		parent_block.add_statement (stmt);
 	}
 
 	public void open_for (Expression? initializer, Expression condition, Expression? iterator) {
-		build_context.statement_stack.add (build_context.current_block);
-		var parent_block = build_context.current_block;
+		statement_stack.add (current_block);
+		var parent_block = current_block;
 
-		build_context.current_block = new Block (source_reference);
+		current_block = new Block (source_reference);
 
-		var stmt = new ForStatement (condition, build_context.current_block, source_reference);
+		var stmt = new ForStatement (condition, current_block, source_reference);
 		if (initializer != null) {
 			stmt.add_initializer (initializer);
 		}
@@ -147,10 +127,10 @@ public class Vala.CodeBuilder {
 	}
 
 	public void open_switch (Expression expression, Expression? first_label) {
-		var parent_block = build_context.current_block;
+		var parent_block = current_block;
 
 		var stmt = new SwitchStatement (expression, source_reference);
-		build_context.statement_stack.add (stmt);
+		statement_stack.add (stmt);
 
 		var section = new SwitchSection (source_reference);
 		SwitchLabel label;
@@ -160,17 +140,17 @@ public class Vala.CodeBuilder {
 			label = new SwitchLabel (first_label);
 		}
 		section.add_label (label);
-		build_context.current_block = section;
-		build_context.statement_stack.add (section);
+		current_block = section;
+		statement_stack.add (section);
 
 		parent_block.add_statement (stmt);
 		stmt.add_section (section);
 	}
 
 	public void add_section (Expression? expression) {
-		build_context.statement_stack.remove_at (build_context.statement_stack.size - 1);
+		statement_stack.remove_at (statement_stack.size - 1);
 
-		var stmt = (SwitchStatement) build_context.statement_stack[build_context.statement_stack.size - 1];
+		var stmt = (SwitchStatement) statement_stack[statement_stack.size - 1];
 		var section = new SwitchSection (source_reference);
 		SwitchLabel label;
 		if (expression == null) {
@@ -179,14 +159,14 @@ public class Vala.CodeBuilder {
 			label = new SwitchLabel (expression);
 		}
 		section.add_label (label);
-		build_context.current_block = section;
-		build_context.statement_stack.add (section);
+		current_block = section;
+		statement_stack.add (section);
 
 		stmt.add_section (section);	
 	}
 
 	public void add_label (Expression? expression) {
-		var section = (SwitchSection) build_context.statement_stack[build_context.statement_stack.size - 1];
+		var section = (SwitchSection) statement_stack[statement_stack.size - 1];
 		SwitchLabel label;
 		if (expression == null) {
 			label = new SwitchLabel.with_default (source_reference);
@@ -197,26 +177,26 @@ public class Vala.CodeBuilder {
 	}
 
 	public void open_try () {
-		build_context.statement_stack.add (build_context.current_block);
-		var parent_block = build_context.current_block;
+		statement_stack.add (current_block);
+		var parent_block = current_block;
 
-		build_context.current_block = new Block (source_reference);
+		current_block = new Block (source_reference);
 
-		var stmt = new TryStatement (build_context.current_block, null, source_reference);
-		build_context.statement_stack.add (stmt);
+		var stmt = new TryStatement (current_block, null, source_reference);
+		statement_stack.add (stmt);
 
 		parent_block.add_statement (stmt);
 	}
 
 	public void add_catch (DataType? error_type, string? variable_name) {
-		build_context.current_block = new Block (source_reference);
+		current_block = new Block (source_reference);
 
-		var stmt = (TryStatement) build_context.statement_stack[build_context.statement_stack.size-1];
-		stmt.add_catch_clause (new CatchClause (error_type, variable_name, build_context.current_block, source_reference));
+		var stmt = (TryStatement) statement_stack[statement_stack.size-1];
+		stmt.add_catch_clause (new CatchClause (error_type, variable_name, current_block, source_reference));
 	}
 
 	public void add_statement (Statement statement) {
-		build_context.current_block.add_statement (statement);
+		current_block.add_statement (statement);
 	}
 
 	public void add_expression (Expression expression) {
@@ -246,16 +226,16 @@ public class Vala.CodeBuilder {
 	public string add_temp_declaration (DataType? type, Expression? initializer = null) {
 		var local = new LocalVariable (type, CodeNode.get_temp_name (), initializer, source_reference);
 		var stmt = new DeclarationStatement (local, source_reference);
-		build_context.insert_block.insert_before (build_context.insert_statement, stmt);
-		build_context.check_nodes.insert (0, stmt);
+		insert_block.insert_before (insert_statement, stmt);
+		check_nodes.insert (0, stmt);
 		return local.name;
 	}
 
 	public void close () {
 		do {
-			var top = build_context.statement_stack[build_context.statement_stack.size - 1];
-			build_context.statement_stack.remove_at (build_context.statement_stack.size - 1);
-			build_context.current_block = top as Block;
-		} while (build_context.current_block == null);
+			var top = statement_stack[statement_stack.size - 1];
+			statement_stack.remove_at (statement_stack.size - 1);
+			current_block = top as Block;
+		} while (current_block == null);
 	}
 }
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