119 lines
2.6 KiB
C
119 lines
2.6 KiB
C
#ifndef CKIWI_H_
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#define CKIWI_H_
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#include <stddef.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define KIWI_REF_ISNULL(ref) ((ref).impl_ == NULL)
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// LuaJIT start
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enum KiwiErrKind {
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KiwiErrNone,
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KiwiErrUnsatisfiableConstraint = 1,
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KiwiErrUnknownConstraint,
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KiwiErrDuplicateConstraint,
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KiwiErrUnknownEditVariable,
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KiwiErrDuplicateEditVariable,
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KiwiErrBadRequiredStrength,
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KiwiErrInternalSolverError,
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KiwiErrAlloc,
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KiwiErrUnknown,
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};
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enum KiwiRelOp { KIWI_OP_LE, KIWI_OP_GE, KIWI_OP_EQ };
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typedef struct {
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void* private_;
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} KiwiVarRef;
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typedef struct {
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KiwiVarRef var;
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double coefficient;
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} KiwiTerm;
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typedef struct {
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double constant;
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int term_count;
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KiwiTerm terms[1];
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} KiwiExpression;
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typedef struct {
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void* private_;
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} KiwiConstraintRef;
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typedef struct {
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enum KiwiErrKind kind;
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char message[64];
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} KiwiErr;
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typedef struct {
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void* impl_;
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} KiwiSolverRef;
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KiwiVarRef kiwi_var_new(const char* name);
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void kiwi_var_del(KiwiVarRef var);
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const char* kiwi_var_name(KiwiVarRef var);
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void kiwi_var_set_name(KiwiVarRef var, const char* name);
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double kiwi_var_value(KiwiVarRef var);
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void kiwi_var_set_value(KiwiVarRef var, double value);
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int kiwi_var_eq(KiwiVarRef var, KiwiVarRef other);
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KiwiConstraintRef
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kiwi_constraint_new(const KiwiExpression* expression, enum KiwiRelOp op, double strength);
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void kiwi_constraint_del(KiwiConstraintRef constraint);
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double kiwi_constraint_strength(KiwiConstraintRef constraint);
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enum KiwiRelOp kiwi_constraint_op(KiwiConstraintRef constraint);
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int kiwi_constraint_violated(KiwiConstraintRef constraint);
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int kiwi_constraint_expression(
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KiwiConstraintRef constraint,
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KiwiExpression* out,
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int out_size
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);
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KiwiErr kiwi_solver_add_constraint(KiwiSolverRef s, KiwiConstraintRef constraint);
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KiwiErr kiwi_solver_remove_constraint(KiwiSolverRef s, KiwiConstraintRef constraint);
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int kiwi_solver_has_constraint(KiwiSolverRef s, KiwiConstraintRef constraint);
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KiwiErr kiwi_solver_add_edit_var(KiwiSolverRef s, KiwiVarRef var, double strength);
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KiwiErr kiwi_solver_remove_edit_var(KiwiSolverRef s, KiwiVarRef var);
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int kiwi_solver_has_edit_var(KiwiSolverRef s, KiwiVarRef var);
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KiwiErr kiwi_solver_suggest_value(KiwiSolverRef s, KiwiVarRef var, double value);
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void kiwi_solver_update_vars(KiwiSolverRef s);
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void kiwi_solver_reset(KiwiSolverRef s);
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void kiwi_solver_dump(KiwiSolverRef s);
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char* kiwi_solver_dumps(KiwiSolverRef s, void* (*alloc)(size_t));
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KiwiSolverRef kiwi_solver_new();
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void kiwi_solver_del(KiwiSolverRef s);
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// LuaJIT end
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#ifdef __cplusplus
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}
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#endif
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// Local Variables:
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// mode: c++
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// End:
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#endif // CKIWI_H_
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