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Added 'Toy_String' to 'Toy_Value' structure, read more

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To help with storing strings within tables, I've replaced the unused
'_padding' member of 'Toy_String' with 'cachedHash', which is set to
zero on string allocation.

The hash of a string isn't generated and stored until it's actually
needed, as the rope pattern means not every string needs a hash -
hopefully this will save unnecessarily wasted time.

When a hash of a string is needed, the hashing function first checks to
see if that string already has one, and if so, returns it. Again, less
time wasted.

When generating a new string hash, the hashing function takes the
string's type into account, as node-based strings first need their
contents assembled into a simple char buffer.

Other changes include:

* Changed 'TOY_VALUE_TO_*' to 'TOY_VALUE_FROM_*'
* Changed 'TOY_VALUE_IS_EQUAL' to 'TOY_VALUES_ARE_EQUAL'
* Added a missing '#pragma once' to 'toy_print.h'
This commit is contained in:
Kayne Ruse
2024-10-07 17:20:08 +11:00
parent d62ee2a9a3
commit 14653a303f
25 changed files with 266 additions and 175 deletions
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22
source/toy_value.h
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@@ -2,6 +2,9 @@
#include "toy_common.h"
//forward declarations
struct Toy_String;
typedef enum Toy_ValueType {
TOY_VALUE_NULL,
TOY_VALUE_BOOLEAN,
@@ -20,15 +23,15 @@ typedef struct Toy_Value { //32 | 64 BITNESS
bool boolean; //1 | 1
int integer; //4 | 4
float number; //4 | 4
//TODO: strings
struct Toy_String* string; //4 | 8
//TODO: arrays
//TODO: dictonaries
//TODO: functions
//TODO: opaque
} as; //4 | 4
} as; //4 | 8
Toy_ValueType type; //4 | 4
} Toy_Value; //8 | 8
} Toy_Value; //8 | 12
#define TOY_VALUE_IS_NULL(value) ((value).type == TOY_VALUE_NULL)
#define TOY_VALUE_IS_BOOLEAN(value) ((value).type == TOY_VALUE_BOOLEAN)
@@ -43,18 +46,21 @@ typedef struct Toy_Value { //32 | 64 BITNESS
#define TOY_VALUE_AS_BOOLEAN(value) ((value).as.boolean)
#define TOY_VALUE_AS_INTEGER(value) ((value).as.integer)
#define TOY_VALUE_AS_FLOAT(value) ((value).as.number)
#define TOY_VALUE_AS_STRING(value) ((value).as.string)
//TODO: more
#define TOY_VALUE_TO_NULL() ((Toy_Value){{ .integer = 0 }, TOY_VALUE_NULL})
#define TOY_VALUE_TO_BOOLEAN(value) ((Toy_Value){{ .boolean = value }, TOY_VALUE_BOOLEAN})
#define TOY_VALUE_TO_INTEGER(value) ((Toy_Value){{ .integer = value }, TOY_VALUE_INTEGER})
#define TOY_VALUE_TO_FLOAT(value) ((Toy_Value){{ .number = value }, TOY_VALUE_FLOAT})
#define TOY_VALUE_FROM_NULL() ((Toy_Value){{ .integer = 0 }, TOY_VALUE_NULL})
#define TOY_VALUE_FROM_BOOLEAN(value) ((Toy_Value){{ .boolean = value }, TOY_VALUE_BOOLEAN})
#define TOY_VALUE_FROM_INTEGER(value) ((Toy_Value){{ .integer = value }, TOY_VALUE_INTEGER})
#define TOY_VALUE_FROM_FLOAT(value) ((Toy_Value){{ .number = value }, TOY_VALUE_FLOAT})
#define TOY_VALUE_FROM_STRING(value) ((Toy_Value){{ .string = value }, TOY_VALUE_STRING})
//TODO: more
#define TOY_VALUE_IS_TRUTHY(value) Toy_private_isTruthy(value)
TOY_API bool Toy_private_isTruthy(Toy_Value value);
#define TOY_VALUE_IS_EQUAL(left, right) Toy_private_isEqual(left, right)
#define TOY_VALUES_ARE_EQUAL(left, right) Toy_private_isEqual(left, right)
TOY_API bool Toy_private_isEqual(Toy_Value left, Toy_Value right);
unsigned int Toy_hashValue(Toy_Value value);