Inline code to check if the light source is a point or sun?

[ghost]

Is there any code available to determine the type of light source hitting the mesh?

[pragma37]

There's certainly code for it:

Malt/Malt/Shaders/Lighting/Lighting.glsl

Line 90 in 5a00fa9

if (light.type == LIGHT_SUN)

However, lighting is computed inside a loop, so custom lighting is not doable withing the Inline Code node.
You may need to make a custom node instead.
You can check https://github.com/bnpr/Malt/blob/Development/Malt/Pipelines/NPR_Pipeline/Shaders/NPR_Pipeline/NPR_Shading2.glsl to see how the built-in Shading nodes are done.