What is the author's style in Candy by Luke Davies?

The language of the novel is very informal. There is a lot heroin and drug slang and swearing. The sentences are constructed to show the common lingo of Australians in the 1990s. However, the language is not without rules as the author writes in a grammatically perfect way. The sentences follow grammar rules and complex rules of literature. The language adds depth to the novel as a whole because the reader can understand what is going on even though the narrator and Candy are deep into heroin nearly all of the time. Though slang terms and swearing are used, there is no colloquial or indecipherable language that an American reader can't understand.