Support raw string literals. (#2405)

* Support raw string literals.

* Use raw string literal in tests.

Co-authored-by: Yong He <yhe@nvidia.com>

3 files changed, 47 insertions, 11 deletions

diff --git a/tests/cpu-program/gfx-smoke.slang b/tests/cpu-program/gfx-smoke.slang
index 2ad33052f..37beede7e 100644
--- a/tests/cpu-program/gfx-smoke.slang
+++ b/tests/cpu-program/gfx-smoke.slang
@@ -23,17 +23,17 @@ public __extern_cpp int main()
     device.value.createCommandQueue(&queueDesc, queue);
 
     gfx.ShaderProgramDesc2 programDesc = {};
-    NativeString s =
-        "[shader(\"compute\")]"
-        "[numthreads(4, 1, 1)]"
-        "void computeMain("
-        "    uint3 sv_dispatchThreadID: SV_DispatchThreadID,"
-        "    uniform RWStructuredBuffer<float> buffer"
-        "    )"
-        "{"
-        "    var input = buffer[sv_dispatchThreadID.x];"
-        "    buffer[sv_dispatchThreadID.x] = sv_dispatchThreadID.x;"
-        "}";
+    NativeString s = R"(
+        [shader("compute")]
+        [numthreads(4, 1, 1)]
+        void computeMain(
+            uint3 sv_dispatchThreadID: SV_DispatchThreadID,
+            uniform RWStructuredBuffer<float> buffer
+            )
+        {
+            var input = buffer[sv_dispatchThreadID.x];
+            buffer[sv_dispatchThreadID.x] = sv_dispatchThreadID.x;
+        })";
     programDesc.sourceData = s;
     programDesc.sourceType = gfx.ShaderModuleSourceType.SlangSource;
     programDesc.sourceDataSize = s.length;
diff --git a/tests/front-end/raw-string-literal.slang b/tests/front-end/raw-string-literal.slang
new file mode 100644
index 000000000..321f183c7
--- /dev/null
+++ b/tests/front-end/raw-string-literal.slang
@@ -0,0 +1,28 @@
+// Test raw string literals.
+
+//TEST:EXECUTABLE:
+__target_intrinsic(cpp, R"delim(printf("%c", $0))delim")
+void writeChar(int8_t ch);
+
+void printLines(NativeString text)
+{
+    NativeString str = text;
+    int8_t *ptr = bit_cast<Ptr<int8_t>>(str);
+    for (int i = 0; i < text.length; i++)
+    {
+        if (ptr[i] != 13)
+        {
+            writeChar(ptr[i]);
+        }
+    }
+}
+
+public __extern_cpp int main()
+{
+    printLines(
+        R"(This is line 1.
+        This is line 2.
+        "Hello World"
+        )");
+    return 0;
+}
\ No newline at end of file
diff --git a/tests/front-end/raw-string-literal.slang.expected b/tests/front-end/raw-string-literal.slang.expected
new file mode 100644
index 000000000..684398fb1
--- /dev/null
+++ b/tests/front-end/raw-string-literal.slang.expected
@@ -0,0 +1,8 @@
+result code = 0
+standard error = {
+}
+standard output = {
+This is line 1.
+        This is line 2.
+        "Hello World"
+        }