Mesa (7.10): glsl: Change default value of ast_type_specifier::precision

[Ian Romanick]

Module: Mesa
Branch: 7.10
Commit: 9016ab24b8c69ef59c6fb9ae85d75571e943879b
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=9016ab24b8c69ef59c6fb9ae85d75571e943879b

Author: Chad Versace <chad.versace at intel.com>
Date:   Fri Jan 14 09:50:55 2011 -0800

glsl: Change default value of ast_type_specifier::precision

Change default value to ast_precision_none, which denotes the absence of
a precision of a qualifier.

Previously, the default value was ast_precision_high. This made it
impossible to detect if a precision qualifier was present or not.
(cherry picked from commit aaa31bf8f44e1aab0e87160661196b0a16e1d015)

---

 src/glsl/ast.h        |    7 ++++---
 src/glsl/ast_type.cpp |    2 +-
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/src/glsl/ast.h b/src/glsl/ast.h
index a77b522..6791734 100644
--- a/src/glsl/ast.h
+++ b/src/glsl/ast.h
@@ -318,7 +318,8 @@ public:
 
 
 enum {
-   ast_precision_high = 0, /**< Default precision. */
+   ast_precision_none = 0, /**< Absence of precision qualifier. */
+   ast_precision_high,
    ast_precision_medium,
    ast_precision_low
 };
@@ -440,7 +441,7 @@ public:
    /** Construct a type specifier from a type name */
    ast_type_specifier(const char *name) 
       : type_specifier(ast_type_name), type_name(name), structure(NULL),
-	is_array(false), array_size(NULL), precision(ast_precision_high)
+	is_array(false), array_size(NULL), precision(ast_precision_none)
    {
       /* empty */
    }
@@ -448,7 +449,7 @@ public:
    /** Construct a type specifier from a structure definition */
    ast_type_specifier(ast_struct_specifier *s)
       : type_specifier(ast_struct), type_name(s->name), structure(s),
-	is_array(false), array_size(NULL), precision(ast_precision_high)
+	is_array(false), array_size(NULL), precision(ast_precision_none)
    {
       /* empty */
    }
diff --git a/src/glsl/ast_type.cpp b/src/glsl/ast_type.cpp
index b7488cf..3b331c4 100644
--- a/src/glsl/ast_type.cpp
+++ b/src/glsl/ast_type.cpp
@@ -49,7 +49,7 @@ ast_type_specifier::print(void) const
 
 ast_type_specifier::ast_type_specifier(int specifier)
       : type_specifier(ast_types(specifier)), type_name(NULL), structure(NULL),
-	is_array(false), array_size(NULL), precision(ast_precision_high)
+	is_array(false), array_size(NULL), precision(ast_precision_none)
 {
    static const char *const names[] = {
       "void",