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change all expression and statement pointers to be const (#449)

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* change all expression and statement pointers to be const

* const in paren tests
This commit is contained in:
Jeremy G. Siek
2021-04-19 21:47:19 -04:00
committed by GitHub
parent 153d92b390
commit 34f1a03f7b
21 changed files with 258 additions and 229 deletions
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executable_semantics/ast/expression.h
+37 -33
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@@ -47,73 +47,77 @@ struct Expression {
} variable;
struct {
Expression* aggregate;
const Expression* aggregate;
std::string* field;
} get_field;
struct {
Expression* aggregate;
Expression* offset;
const Expression* aggregate;
const Expression* offset;
} index;
struct {
std::string* name;
Expression* type;
const Expression* type;
} pattern_variable;
int integer;
bool boolean;
struct {
std::vector<std::pair<std::string, Expression*>>* fields;
std::vector<std::pair<std::string, const Expression*>>* fields;
} tuple;
struct {
Operator op;
std::vector<Expression*>* arguments;
std::vector<const Expression*>* arguments;
} primitive_op;
struct {
Expression* function;
Expression* argument;
const Expression* function;
const Expression* argument;
} call;
struct {
Expression* parameter;
Expression* return_type;
const Expression* parameter;
const Expression* return_type;
} function_type;
} u;
};
auto MakeVar(int line_num, std::string var) -> Expression*;
auto MakeVarPat(int line_num, std::string var, Expression* type) -> Expression*;
auto MakeInt(int line_num, int i) -> Expression*;
auto MakeBool(int line_num, bool b) -> Expression*;
auto MakeOp(int line_num, Operator op, std::vector<Expression*>* args)
-> Expression*;
auto MakeUnOp(int line_num, enum Operator op, Expression* arg) -> Expression*;
auto MakeBinOp(int line_num, enum Operator op, Expression* arg1,
Expression* arg2) -> Expression*;
auto MakeCall(int line_num, Expression* fun, Expression* arg) -> Expression*;
auto MakeGetField(int line_num, Expression* exp, std::string field)
-> Expression*;
auto MakeVar(int line_num, std::string var) -> const Expression*;
auto MakeVarPat(int line_num, std::string var, const Expression* type)
-> const Expression*;
auto MakeInt(int line_num, int i) -> const Expression*;
auto MakeBool(int line_num, bool b) -> const Expression*;
auto MakeOp(int line_num, Operator op, std::vector<const Expression*>* args)
-> const Expression*;
auto MakeUnOp(int line_num, enum Operator op, const Expression* arg)
-> const Expression*;
auto MakeBinOp(int line_num, enum Operator op, const Expression* arg1,
const Expression* arg2) -> const Expression*;
auto MakeCall(int line_num, const Expression* fun, const Expression* arg)
-> const Expression*;
auto MakeGetField(int line_num, const Expression* exp, std::string field)
-> const Expression*;
auto MakeTuple(int line_num,
std::vector<std::pair<std::string, Expression*>>* args)
-> Expression*;
std::vector<std::pair<std::string, const Expression*>>* args)
-> const Expression*;
// Create an AST node for an empty tuple.
auto MakeUnit(int line_num) -> Expression*;
auto MakeIndex(int line_num, Expression* exp, Expression* i) -> Expression*;
auto MakeUnit(int line_num) -> const Expression*;
auto MakeIndex(int line_num, const Expression* exp, const Expression* i)
-> const Expression*;
auto MakeTypeType(int line_num) -> Expression*;
auto MakeIntType(int line_num) -> Expression*;
auto MakeBoolType(int line_num) -> Expression*;
auto MakeFunType(int line_num, Expression* param, Expression* ret)
-> Expression*;
auto MakeAutoType(int line_num) -> Expression*;
auto MakeTypeType(int line_num) -> const Expression*;
auto MakeIntType(int line_num) -> const Expression*;
auto MakeBoolType(int line_num) -> const Expression*;
auto MakeFunType(int line_num, const Expression* param, const Expression* ret)
-> const Expression*;
auto MakeAutoType(int line_num) -> const Expression*;
// Returns a Continuation type AST node at the given source location,
// which is the type of a continuation value.
auto MakeContinuationType(int line_num) -> Expression*;
auto MakeContinuationType(int line_num) -> const Expression*;
void PrintExp(const Expression* exp);