[vala/wip/transform: 43/98] DOM-like linked list of statements
- From: Rico Tzschichholz <ricotz src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [vala/wip/transform: 43/98] DOM-like linked list of statements
- Date: Sun, 25 Sep 2016 19:37:48 +0000 (UTC)
commit befab6e06808d2fb5cde7b6c96d04a3bba9d3408
Author: Luca Bruno <lucabru src gnome org>
Date: Thu Jan 5 15:33:32 2012 +0100
DOM-like linked list of statements
codegen/valaccodebasemodule.vala | 2 +-
vala/Makefile.am | 2 +-
vala/valabasestatement.vala | 32 +++++++++
vala/valablock.vala | 134 ++++++++++++++++++++----------------
vala/valabreakstatement.vala | 2 +-
vala/valacodewriter.vala | 2 +-
vala/valacontinuestatement.vala | 2 +-
vala/valadeclarationstatement.vala | 2 +-
vala/valadeletestatement.vala | 2 +-
vala/valadostatement.vala | 2 +-
vala/valaemptystatement.vala | 2 +-
vala/valaexpressionstatement.vala | 2 +-
vala/valaflowanalyzer.vala | 2 +-
vala/valaforeachstatement.vala | 2 +-
vala/valaforstatement.vala | 2 +-
vala/valaifstatement.vala | 2 +-
vala/valalockstatement.vala | 2 +-
vala/valaloop.vala | 2 +-
vala/valareturnstatement.vala | 2 +-
vala/valastatement.vala | 2 +
vala/valastatementlist.vala | 77 ---------------------
vala/valaswitchsection.vala | 6 +-
vala/valaswitchstatement.vala | 2 +-
vala/valathrowstatement.vala | 2 +-
vala/valatrystatement.vala | 2 +-
vala/valaunlockstatement.vala | 2 +-
vala/valawhilestatement.vala | 2 +-
vala/valayieldstatement.vala | 2 +-
28 files changed, 134 insertions(+), 163 deletions(-)
---
diff --git a/codegen/valaccodebasemodule.vala b/codegen/valaccodebasemodule.vala
index 2b1133c..4d726b2 100644
--- a/codegen/valaccodebasemodule.vala
+++ b/codegen/valaccodebasemodule.vala
@@ -2168,7 +2168,7 @@ public abstract class Vala.CCodeBaseModule : CodeGenerator {
cfile.add_function (unref_fun);
}
- foreach (Statement stmt in b.get_statements ()) {
+ foreach (Statement stmt in b) {
push_line (stmt.source_reference);
stmt.emit (this);
pop_line ();
diff --git a/vala/Makefile.am b/vala/Makefile.am
index a18d5c0..f81c8c0 100644
--- a/vala/Makefile.am
+++ b/vala/Makefile.am
@@ -26,6 +26,7 @@ libvalacore_la_VALASOURCES = \
valaassignment.vala \
valaattribute.vala \
valabaseaccess.vala \
+ valabasestatement.vala \
valabasicblock.vala \
valabinaryexpression.vala \
valablock.vala \
@@ -134,7 +135,6 @@ libvalacore_la_VALASOURCES = \
valasourcelocation.vala \
valasourcereference.vala \
valastatement.vala \
- valastatementlist.vala \
valastringliteral.vala \
valastruct.vala \
valastructvaluetype.vala \
diff --git a/vala/valabasestatement.vala b/vala/valabasestatement.vala
new file mode 100644
index 0000000..33d2516
--- /dev/null
+++ b/vala/valabasestatement.vala
@@ -0,0 +1,32 @@
+/* valabasestatement.vala
+ *
+ * Copyright (C) 2012 Luca Bruno
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * Author:
+ * Luca Bruno <lucabru src gnome org>
+ */
+
+using GLib;
+
+/**
+ * Simple class implementing Statement.
+ */
+public class Vala.BaseStatement : CodeNode, Statement {
+ public Statement prev { get; set; }
+
+ public Statement next { get; set; }
+}
diff --git a/vala/valablock.vala b/vala/valablock.vala
index 0b3447a..6719409 100644
--- a/vala/valablock.vala
+++ b/vala/valablock.vala
@@ -34,7 +34,14 @@ public class Vala.Block : Symbol, Statement {
public bool captured { get; set; }
- private List<Statement> statement_list = new ArrayList<Statement> ();
+ public Statement first_statement { get; private set; }
+
+ public Statement prev { get; set; }
+
+ public Statement next { get; set; }
+
+ private Statement last_statement;
+
private List<LocalVariable> local_variables = new ArrayList<LocalVariable> ();
private List<Constant> local_constants = new ArrayList<Constant> ();
@@ -54,34 +61,28 @@ public class Vala.Block : Symbol, Statement {
*/
public void add_statement (Statement stmt) {
stmt.parent_node = this;
- statement_list.add (stmt);
+ if (last_statement == null) {
+ first_statement = last_statement = stmt;
+ } else {
+ last_statement.next = stmt;
+ stmt.prev = last_statement;
+ last_statement = stmt;
+ }
}
public void insert_statement (int index, Statement stmt) {
- stmt.parent_node = this;
- statement_list.insert (index, stmt);
- }
-
- /**
- * Returns a copy of the list of statements.
- *
- * @return statement list
- */
- public List<Statement> get_statements () {
- var list = new ArrayList<Statement> ();
- foreach (Statement stmt in statement_list) {
- var stmt_list = stmt as StatementList;
- if (stmt_list != null) {
- for (int i = 0; i < stmt_list.length; i++) {
- list.add (stmt_list.get (i));
- }
- } else {
- list.add (stmt);
- }
+ Statement iter = first_statement;
+ while (iter != null && index > 0) {
+ index--;
+ iter = iter.next;
+ }
+ if (iter == null) {
+ add_statement (stmt);
+ } else {
+ insert_before (iter, stmt);
}
- return list;
}
-
+
/**
* Add a local variable to this block.
*
@@ -132,7 +133,7 @@ public class Vala.Block : Symbol, Statement {
}
public override void accept_children (CodeVisitor visitor) {
- foreach (Statement stmt in statement_list) {
+ foreach (Statement stmt in this) {
stmt.accept (visitor);
}
}
@@ -146,8 +147,8 @@ public class Vala.Block : Symbol, Statement {
owner = context.analyzer.get_current_symbol (parent_node).scope;
- for (int i = 0; i < statement_list.size; i++) {
- statement_list[i].check (context);
+ foreach (var stmt in this) {
+ stmt.check (context);
}
foreach (LocalVariable local in get_local_variables ()) {
@@ -166,7 +167,7 @@ public class Vala.Block : Symbol, Statement {
source_reference = this.source_reference;
}
// use get_statements () instead of statement_list to not miss errors within StatementList
objects
- foreach (Statement stmt in get_statements ()) {
+ foreach (Statement stmt in this) {
stmt.get_error_types (collection, source_reference);
}
}
@@ -176,42 +177,55 @@ public class Vala.Block : Symbol, Statement {
}
public void insert_before (Statement stmt, Statement new_stmt) {
- for (int i = 0; i < statement_list.size; i++) {
- var stmt_list = statement_list[i] as StatementList;
- if (stmt_list != null) {
- for (int j = 0; j < stmt_list.length; j++) {
- if (stmt_list.get (j) == stmt) {
- stmt_list.insert (j, new_stmt);
- new_stmt.parent_node = this;
- break;
- }
- }
- } else if (statement_list[i] == stmt) {
- stmt_list = new StatementList (source_reference);
- stmt_list.add (new_stmt);
- stmt_list.add (stmt);
- statement_list[i] = stmt_list;
- new_stmt.parent_node = this;
- }
+ new_stmt.parent_node = this;
+ new_stmt.prev = stmt.prev;
+ new_stmt.next = stmt;
+
+ if (stmt.prev == null) {
+ first_statement = new_stmt;
+ } else {
+ stmt.prev.next = new_stmt;
}
+ stmt.prev = new_stmt;
}
public void replace_statement (Statement old_stmt, Statement new_stmt) {
- for (int i = 0; i < statement_list.size; i++) {
- var stmt_list = statement_list[i] as StatementList;
- if (stmt_list != null) {
- for (int j = 0; j < stmt_list.length; j++) {
- if (stmt_list.get (j) == old_stmt) {
- stmt_list.set (j, new_stmt);
- new_stmt.parent_node = this;
- break;
- }
- }
- } else if (statement_list[i] == old_stmt) {
- statement_list[i] = new_stmt;
- new_stmt.parent_node = this;
- break;
- }
+ new_stmt.parent_node = this;
+ new_stmt.prev = old_stmt.prev;
+ new_stmt.next = old_stmt.next;
+
+ if (old_stmt.prev == null) {
+ first_statement = new_stmt;
+ } else {
+ old_stmt.prev.next = new_stmt;
+ }
+
+ if (old_stmt.next == null) {
+ last_statement = new_stmt;
+ } else {
+ old_stmt.next.prev = new_stmt;
+ }
+ }
+
+ public StatementIterator iterator () {
+ return new StatementIterator (this);
+ }
+}
+
+public class Vala.StatementIterator {
+ private Block block;
+ private Statement next;
+
+ public StatementIterator (Block block) {
+ this.block = block;
+ this.next = block.first_statement;
+ }
+
+ public Statement? next_value () {
+ var ret = next;
+ if (ret != null) {
+ next = ret.next;
}
+ return ret;
}
}
diff --git a/vala/valabreakstatement.vala b/vala/valabreakstatement.vala
index 3f69c85..6545b2d 100644
--- a/vala/valabreakstatement.vala
+++ b/vala/valabreakstatement.vala
@@ -25,7 +25,7 @@ using GLib;
/**
* Represents a break statement in the source code.
*/
-public class Vala.BreakStatement : CodeNode, Statement {
+public class Vala.BreakStatement : BaseStatement {
/**
* Creates a new break statement.
*
diff --git a/vala/valacodewriter.vala b/vala/valacodewriter.vala
index 7e9c7c0..d08f2a9 100644
--- a/vala/valacodewriter.vala
+++ b/vala/valacodewriter.vala
@@ -908,7 +908,7 @@ public class Vala.CodeWriter : CodeVisitor {
public override void visit_block (Block b) {
write_begin_block ();
- foreach (Statement stmt in b.get_statements ()) {
+ foreach (Statement stmt in b) {
stmt.accept (this);
}
diff --git a/vala/valacontinuestatement.vala b/vala/valacontinuestatement.vala
index 1de109d..083d746 100644
--- a/vala/valacontinuestatement.vala
+++ b/vala/valacontinuestatement.vala
@@ -25,7 +25,7 @@ using GLib;
/**
* Represents a continue statement in the source code.
*/
-public class Vala.ContinueStatement : CodeNode, Statement {
+public class Vala.ContinueStatement : BaseStatement {
/**
* Creates a new continue statement.
*
diff --git a/vala/valadeclarationstatement.vala b/vala/valadeclarationstatement.vala
index ab652e9..1fea1cf 100644
--- a/vala/valadeclarationstatement.vala
+++ b/vala/valadeclarationstatement.vala
@@ -24,7 +24,7 @@
/**
* Represents a local variable or constant declaration statement in the source code.
*/
-public class Vala.DeclarationStatement : CodeNode, Statement {
+public class Vala.DeclarationStatement : BaseStatement {
/**
* The local variable or constant declaration.
*/
diff --git a/vala/valadeletestatement.vala b/vala/valadeletestatement.vala
index ff3ff68..426db5d 100644
--- a/vala/valadeletestatement.vala
+++ b/vala/valadeletestatement.vala
@@ -23,7 +23,7 @@
/**
* Represents a delete statement e.g. "delete a".
*/
-public class Vala.DeleteStatement : CodeNode, Statement {
+public class Vala.DeleteStatement : BaseStatement {
/**
* Expression representing the instance to be freed.
*/
diff --git a/vala/valadostatement.vala b/vala/valadostatement.vala
index ec72b06..145c2c6 100644
--- a/vala/valadostatement.vala
+++ b/vala/valadostatement.vala
@@ -25,7 +25,7 @@ using GLib;
/**
* Represents a do iteration statement in the source code.
*/
-public class Vala.DoStatement : CodeNode, Statement {
+public class Vala.DoStatement : BaseStatement {
/**
* Specifies the loop body.
*/
diff --git a/vala/valaemptystatement.vala b/vala/valaemptystatement.vala
index 1cc6ae0..81bcd3b 100644
--- a/vala/valaemptystatement.vala
+++ b/vala/valaemptystatement.vala
@@ -25,7 +25,7 @@ using GLib;
/**
* An empty statement.
*/
-public class Vala.EmptyStatement : CodeNode, Statement {
+public class Vala.EmptyStatement : BaseStatement {
/**
* Creates a new empty statement.
*
diff --git a/vala/valaexpressionstatement.vala b/vala/valaexpressionstatement.vala
index 43cebbe..736c6b7 100644
--- a/vala/valaexpressionstatement.vala
+++ b/vala/valaexpressionstatement.vala
@@ -25,7 +25,7 @@
* A code statement that evaluates a given expression. The value computed by the
* expression, if any, is discarded.
*/
-public class Vala.ExpressionStatement : CodeNode, Statement {
+public class Vala.ExpressionStatement : BaseStatement {
/**
* Specifies the expression to evaluate.
*/
diff --git a/vala/valaflowanalyzer.vala b/vala/valaflowanalyzer.vala
index 373586a..2c61c08 100644
--- a/vala/valaflowanalyzer.vala
+++ b/vala/valaflowanalyzer.vala
@@ -661,7 +661,7 @@ public class Vala.FlowAnalyzer : CodeVisitor {
foreach (SwitchSection section in stmt.get_sections ()) {
current_block = new BasicBlock ();
condition_block.connect (current_block);
- foreach (Statement section_stmt in section.get_statements ()) {
+ foreach (Statement section_stmt in section) {
section_stmt.accept (this);
}
diff --git a/vala/valaforeachstatement.vala b/vala/valaforeachstatement.vala
index d40f34b..a412527 100644
--- a/vala/valaforeachstatement.vala
+++ b/vala/valaforeachstatement.vala
@@ -25,7 +25,7 @@
* Represents a foreach statement in the source code. Foreach statements iterate
* over the elements of a collection.
*/
-public class Vala.ForeachStatement : CodeNode, Statement {
+public class Vala.ForeachStatement : BaseStatement {
/**
* Specifies the element type.
*/
diff --git a/vala/valaforstatement.vala b/vala/valaforstatement.vala
index f82b4de..5a141ea 100644
--- a/vala/valaforstatement.vala
+++ b/vala/valaforstatement.vala
@@ -25,7 +25,7 @@ using GLib;
/**
* Represents a for iteration statement in the source code.
*/
-public class Vala.ForStatement : CodeNode, Statement {
+public class Vala.ForStatement : BaseStatement {
/**
* Specifies the loop condition.
*/
diff --git a/vala/valaifstatement.vala b/vala/valaifstatement.vala
index f2d22e7..04c0372 100644
--- a/vala/valaifstatement.vala
+++ b/vala/valaifstatement.vala
@@ -25,7 +25,7 @@ using GLib;
/**
* Represents an if selection statement in the source code.
*/
-public class Vala.IfStatement : CodeNode, Statement {
+public class Vala.IfStatement : BaseStatement {
/**
* The boolean condition to evaluate.
*/
diff --git a/vala/valalockstatement.vala b/vala/valalockstatement.vala
index 6f7912e..6f0f443 100644
--- a/vala/valalockstatement.vala
+++ b/vala/valalockstatement.vala
@@ -32,7 +32,7 @@ using GLib;
* occurs. Otherwise it's translated into a try/finally statement which unlocks the mutex
* after the block is finished.
*/
-public class Vala.LockStatement : CodeNode, Statement {
+public class Vala.LockStatement : BaseStatement {
/**
* Expression representing the resource to be locked.
*/
diff --git a/vala/valaloop.vala b/vala/valaloop.vala
index ce68946..862ef25 100644
--- a/vala/valaloop.vala
+++ b/vala/valaloop.vala
@@ -25,7 +25,7 @@ using GLib;
/**
* Represents an endless loop.
*/
-public class Vala.Loop : CodeNode, Statement {
+public class Vala.Loop : BaseStatement {
/**
* Specifies the loop body.
*/
diff --git a/vala/valareturnstatement.vala b/vala/valareturnstatement.vala
index 99e7e61..219f6d9 100644
--- a/vala/valareturnstatement.vala
+++ b/vala/valareturnstatement.vala
@@ -24,7 +24,7 @@
/**
* Represents a return statement in the source code.
*/
-public class Vala.ReturnStatement : CodeNode, Statement {
+public class Vala.ReturnStatement : BaseStatement {
/**
* The optional expression to return.
*/
diff --git a/vala/valastatement.vala b/vala/valastatement.vala
index a35d279..ccbee29 100644
--- a/vala/valastatement.vala
+++ b/vala/valastatement.vala
@@ -26,4 +26,6 @@ using GLib;
* Interface for all statement types.
*/
public interface Vala.Statement : CodeNode {
+ public abstract Statement prev { get; set; }
+ public abstract Statement next { get; set; }
}
diff --git a/vala/valaswitchsection.vala b/vala/valaswitchsection.vala
index 8cc177a..b314643 100644
--- a/vala/valaswitchsection.vala
+++ b/vala/valaswitchsection.vala
@@ -80,14 +80,14 @@ public class Vala.SwitchSection : Block {
label.accept (visitor);
}
- foreach (Statement st in get_statements ()) {
+ foreach (Statement st in this) {
st.accept (visitor);
}
}
public override void get_error_types (Collection<DataType> collection, SourceReference?
source_reference = null) {
// use get_statements () instead of statement_list to not miss errors within StatementList
objects
- foreach (var stmt in get_statements ()) {
+ foreach (var stmt in this) {
stmt.get_error_types (collection, source_reference);
}
}
@@ -105,7 +105,7 @@ public class Vala.SwitchSection : Block {
label.check (context);
}
- foreach (Statement st in get_statements ()) {
+ foreach (Statement st in this) {
st.check (context);
}
diff --git a/vala/valaswitchstatement.vala b/vala/valaswitchstatement.vala
index d6d2999..1e7051b 100644
--- a/vala/valaswitchstatement.vala
+++ b/vala/valaswitchstatement.vala
@@ -25,7 +25,7 @@ using GLib;
/**
* Represents a switch selection statement in the source code.
*/
-public class Vala.SwitchStatement : CodeNode, Statement {
+public class Vala.SwitchStatement : BaseStatement {
/**
* Specifies the switch expression.
*/
diff --git a/vala/valathrowstatement.vala b/vala/valathrowstatement.vala
index 2c5128c..32275f3 100644
--- a/vala/valathrowstatement.vala
+++ b/vala/valathrowstatement.vala
@@ -24,7 +24,7 @@
/**
* Represents a throw statement in the source code.
*/
-public class Vala.ThrowStatement : CodeNode, Statement {
+public class Vala.ThrowStatement : BaseStatement {
/**
* The error expression to throw.
*/
diff --git a/vala/valatrystatement.vala b/vala/valatrystatement.vala
index 3ae8924..1a0aaf8 100644
--- a/vala/valatrystatement.vala
+++ b/vala/valatrystatement.vala
@@ -25,7 +25,7 @@ using GLib;
/**
* Represents a try statement in the source code.
*/
-public class Vala.TryStatement : CodeNode, Statement {
+public class Vala.TryStatement : BaseStatement {
/**
* Specifies the body of the try statement.
*/
diff --git a/vala/valaunlockstatement.vala b/vala/valaunlockstatement.vala
index e73e363..7da272b 100644
--- a/vala/valaunlockstatement.vala
+++ b/vala/valaunlockstatement.vala
@@ -24,7 +24,7 @@
/**
* Represents an unlock statement e.g. {{{ unlock (a); }}}.
*/
-public class Vala.UnlockStatement : CodeNode, Statement {
+public class Vala.UnlockStatement : BaseStatement {
/**
* Expression representing the resource to be unlocked.
*/
diff --git a/vala/valawhilestatement.vala b/vala/valawhilestatement.vala
index 1fa17fd..79b37fe 100644
--- a/vala/valawhilestatement.vala
+++ b/vala/valawhilestatement.vala
@@ -25,7 +25,7 @@ using GLib;
/**
* Represents a while iteration statement in the source code.
*/
-public class Vala.WhileStatement : CodeNode, Statement {
+public class Vala.WhileStatement : BaseStatement {
/**
* Specifies the loop condition.
*/
diff --git a/vala/valayieldstatement.vala b/vala/valayieldstatement.vala
index 084ae26..18b49de 100644
--- a/vala/valayieldstatement.vala
+++ b/vala/valayieldstatement.vala
@@ -23,7 +23,7 @@
/**
* Represents a yield statement in the source code.
*/
-public class Vala.YieldStatement : CodeNode, Statement {
+public class Vala.YieldStatement : BaseStatement {
/**
* The expression to yield or the method call to yield to.
*/
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