From 2855f876aceddff4e124f92fa739dc9c9114dddd Mon Sep 17 00:00:00 2001
From: Doug Schaefer <doug.schaefer@windriver.com>
Date: Tue, 24 Jan 2006 18:23:53 +0000
Subject: [PATCH] PDOM - Add option to skip parsing of there is no build
 information.

---
 .../model/org/eclipse/cdt/core/model/ILanguage.java         | 6 ++++++
 .../org/eclipse/cdt/core/dom/ast/gnu/c/GCCLanguage.java     | 2 ++
 .../org/eclipse/cdt/core/dom/ast/gnu/cpp/GPPLanguage.java   | 2 ++
 .../org/eclipse/cdt/internal/core/pdom/PDOMDatabase.java    | 3 ++-
 4 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/core/org.eclipse.cdt.core/model/org/eclipse/cdt/core/model/ILanguage.java b/core/org.eclipse.cdt.core/model/org/eclipse/cdt/core/model/ILanguage.java
index c8c8c0e4ee6..e992b628572 100644
--- a/core/org.eclipse.cdt.core/model/org/eclipse/cdt/core/model/ILanguage.java
+++ b/core/org.eclipse.cdt.core/model/org/eclipse/cdt/core/model/ILanguage.java
@@ -45,6 +45,12 @@ public interface ILanguage extends IAdaptable {
 	 */
 	public static final int AST_SKIP_INDEXED_HEADERS = 4;
 
+	/**
+	 * Style for getTranslationUnit. Don't parse the file if there is no build
+	 * information for it.
+	 */
+	public static final int AST_SKIP_IF_NO_BUILD_INFO = 8;
+	
 	/**
 	 * Return the language id for this language in the given PDOM.
 	 * This is to differentiate languages from eachother.
diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/core/dom/ast/gnu/c/GCCLanguage.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/core/dom/ast/gnu/c/GCCLanguage.java
index 4dea6698f91..196f5819a05 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/core/dom/ast/gnu/c/GCCLanguage.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/core/dom/ast/gnu/c/GCCLanguage.java
@@ -89,6 +89,8 @@ public class GCCLanguage extends PlatformObject implements ILanguage {
 			IScannerInfo buildScanInfo = provider.getScannerInformation(infoResource);
 			if (buildScanInfo != null)
 				scanInfo = buildScanInfo;
+			else if ((style & ILanguage.AST_SKIP_IF_NO_BUILD_INFO) != 0)
+				return null;
 			else
 				scanInfo = new ScannerInfo();
 		}
diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/core/dom/ast/gnu/cpp/GPPLanguage.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/core/dom/ast/gnu/cpp/GPPLanguage.java
index 0c79f192c35..9509cbbd694 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/core/dom/ast/gnu/cpp/GPPLanguage.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/core/dom/ast/gnu/cpp/GPPLanguage.java
@@ -88,6 +88,8 @@ public class GPPLanguage extends PlatformObject implements ILanguage {
 			IScannerInfo buildScanInfo = provider.getScannerInformation(infoResource);
 			if (buildScanInfo != null)
 				scanInfo = buildScanInfo;
+			else if ((style & ILanguage.AST_SKIP_IF_NO_BUILD_INFO) != 0)
+				return null;
 			else
 				scanInfo = new ScannerInfo();
 		}
diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/PDOMDatabase.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/PDOMDatabase.java
index ff9f88ef7a2..349b85ae235 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/PDOMDatabase.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/PDOMDatabase.java
@@ -120,7 +120,8 @@ public class PDOMDatabase implements IPDOM {
 
 		IASTTranslationUnit ast = language.getTranslationUnit((IFile)tu.getResource(),
 				ILanguage.AST_USE_INDEX |
-				ILanguage.AST_SKIP_INDEXED_HEADERS);
+				ILanguage.AST_SKIP_INDEXED_HEADERS |
+				ILanguage.AST_SKIP_IF_NO_BUILD_INFO);
 		if (ast == null)
 			return;