Add string literal parsing to HLSL lexer (copied from the one for C++).

- Also added a snippet to the example file where a string shows up (uncommon in HLSL).

2 files changed, 20 insertions, 0 deletions

diff --git a/pygments/lexers/graphics.py b/pygments/lexers/graphics.py
index a5da2375..b47e12b1 100644
--- a/pygments/lexers/graphics.py
+++ b/pygments/lexers/graphics.py
@@ -102,6 +102,7 @@ class HLSLShaderLexer(RegexLexer):
             (r'0[xX][0-9a-fA-F]*', Number.Hex),
             (r'0[0-7]*', Number.Oct),
             (r'[1-9][0-9]*', Number.Integer),
+			(r'"', String, 'string'),
             (words((
                 'asm','asm_fragment','break','case','cbuffer','centroid','class',
                 'column_major','compile','compile_fragment','const','continue',
@@ -217,6 +218,14 @@ class HLSLShaderLexer(RegexLexer):
             (r'\\$', Comment.Preproc),  # backslash at end of line -- usually macro continuation
             (r'\s+', Text),
         ],
+        'string': [
+            (r'"', String, '#pop'),
+            (r'\\([\\abfnrtv"\']|x[a-fA-F0-9]{2,4}|'
+             r'u[a-fA-F0-9]{4}|U[a-fA-F0-9]{8}|[0-7]{1,3})', String.Escape),
+            (r'[^\\"\n]+', String),  # all other characters
+            (r'\\\n', String),  # line continuation
+            (r'\\', String),  # stray backslash
+        ],
     }
 
 
diff --git a/tests/examplefiles/example.hlsl b/tests/examplefiles/example.hlsl
index 77f1fa49..21d0a672 100644
--- a/tests/examplefiles/example.hlsl
+++ b/tests/examplefiles/example.hlsl
@@ -155,3 +155,14 @@ void main(
 

 	o_rgb = diffuseColor * diffuseLight;

 }

+

+[domain("quad")]

+void ds(

+	in float edgeFactors[4] : SV_TessFactor,

+	in float insideFactors[2] : SV_InsideTessFactor,

+	in OutputPatch<VData, 4> inp,

+	in float2 uv : SV_DomainLocation,

+	out float4 o_pos : SV_Position)

+{

+	o_pos = lerp(lerp(inp[0].pos, inp[1].pos, uv.x), lerp(inp[2].pos, inp[3].pos, uv.x), uv.y);

+}