Android System Programming

Built-in functions

The built-in functions are used to support edify language syntax. The built-in functions are registered by RegisterBuiltins. We can look at the following source code:

void RegisterBuiltins() {     RegisterFunction("ifelse", IfElseFn);     RegisterFunction("abort", AbortFn);     RegisterFunction("assert", AssertFn);     RegisterFunction("concat", ConcatFn);     RegisterFunction("is_substring", SubstringFn);     RegisterFunction("stdout", StdoutFn);     RegisterFunction("sleep", SleepFn);     RegisterFunction("less_than_int", LessThanIntFn);     RegisterFunction("greater_than_int", GreaterThanIntFn); } 

The RegisterBuiltins function registers the following built-in functions:

• ifelse(cond, e1[, e2]): Evaluates cond, and if it is true it evaluates ...