syntax_data: {"ast_node_type":"other","tokens":[{"end":30,"kind":"keyword","start":0,"text":"r0:"}]}
source_snippet:         r0: reg = ["r0", "0"],
context_before:     PowerPC PowerPCInlineAsmReg PowerPCInlineAsmRegClass {
context_after:         r3: reg, reg_nonzero = ["r3", "3"],