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Last change
on this file since 144 was 2, checked in by Rick van der Zwet, 15 years ago |
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Initial import of data of old repository ('data') worth keeping (e.g. tracking
means of URL access statistics)
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File size:
925 bytes
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| 1 | #ifndef COERCION_H
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| 2 | #define COERCION_H
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| 3 |
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| 4 | #include "types.h"
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| 5 | #include "Node.h"
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| 6 | #include "SyntaxTree.h"
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| 7 |
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| 8 | /* Gives the ReturnType that is at least needed for binary operators
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| 9 | * based on the return types of the left and right hand sides.
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| 10 | */
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| 11 | ReturnType minimumtype(ReturnType lhs, ReturnType rhs);
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| 12 |
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| 13 | /* Check whether type is of expected type
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| 14 | */
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| 15 | void checkType(ReturnType expected, ReturnType actual);
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| 16 | void checkType(ReturnType expected, Node *expression);
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| 17 |
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| 18 |
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| 19 | /* Coerces the expression node if necessary.
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| 20 | * Returns either a coercion node or expression itself.
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| 21 | */
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| 22 | Node *coerce(ReturnType to, Node *expression);
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| 23 |
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| 24 | /* Checks if the number and type of the arguments to the call are correct
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| 25 | * and coerces arguments if necessary.
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| 26 | * It gives an error message if it is incorrect.
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| 27 | * call_node must be a valid NodeType of either NODE_FUNCTIONCALL or
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| 28 | * NODE_PROCCALL
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| 29 | */
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| 30 | void check_parameters(Node *call_node);
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| 31 |
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| 32 | #endif /* COERCION_H */
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