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Code Issues Packages Projects Releases 10 Wiki Activity

Global variables (#378)

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* global variables

* implemented type checking of global variable, added test case

* added a comment

* improvements based on Dave's suggestions

* improvements based on Jon's suggestions

* added test cases about global variable ordering
This commit is contained in:
Jeremy G. Siek
2021-03-15 16:06:27 -04:00
committed by GitHub
parent 41786eae25
commit ced98ef021
22 changed files with 822 additions and 3 deletions
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executable_semantics/interpreter/interpreter.cpp
+8
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@@ -304,6 +304,14 @@ auto FunctionDeclaration::InitGlobals(Env& globals) const -> void {
globals.Set(definition->name, a);
}
// Adds an entry in `globals` mapping the variable's name to the
// result of evaluating the initializer.
auto VariableDeclaration::InitGlobals(Env& globals) const -> void {
auto v = InterpExp(globals, initializer);
Address a = AllocateValue(v);
globals.Set(name, a);
}
// { S, H} -> { { C, E, F} :: S, H}
// where C is the body of the function,
// E is the environment (functions + parameters + locals)