dmd.sideeffect

Find side-effects of expressions.

Members

callSideEffectLevel int callSideEffectLevel(FuncDeclaration f): Determine if the call of f, or function type or delegate type t1, has any side effects.
callSideEffectLevel int callSideEffectLevel(Type t): Undocumented in source. Be warned that the author may not have intended to support it.
copyToTemp VarDeclaration copyToTemp(StorageClass stc, char[] name, Expression e): Build a temporary variable to copy the value of e into.
discardValue bool discardValue(Expression e): The result of this expression will be discarded. Print error messages if the operation has no side effects (and hence is meaningless).
extractSideEffect Expression extractSideEffect(Scope* sc, char[] name, Expression e0, Expression e, bool alwaysCopy): Build a temporary variable to extract e's evaluation, if e is not trivial.
hasSideEffect bool hasSideEffect(Expression e, bool assumeImpureCalls): Determine if Expression has any side effects.
isTrivialExp bool isTrivialExp(Expression e): Front-end expression rewriting should create temporary variables for non trivial sub-expressions in order to: 1. save evaluation order 2. prevent sharing of sub-expression in AST