ryuslash/crafting-interpreters
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

Cahapter 22.1

Browse source
This commit is contained in:
Tom Willemse 2021-10-21 20:00:19 -07:00
parent 26b418d254
commit df1985ae84
2 changed files with 22 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
clox/src/common.h
View file

@ -8,4 +8,6 @@
#define DEBUG_PRINT_CODE
#define DEBUG_TRACE_EXECUTION
#define UINT8_COUNT (UINT8_MAX + 1)
#endif

20
clox/src/compiler.c
View file

@ -38,7 +38,19 @@ typedef struct {
Precedence precedence;
} ParseRule;
typedef struct {
Token name;
int depth;
} Local;
typedef struct {
Local locals[UINT8_COUNT];
int localCount;
int scopeDepth;
} Compiler;
Parser parser;
Compiler *current = NULL;
Chunk *compilingChunk;
static Chunk *currentChunk() { return compilingChunk; }
@ -122,6 +134,12 @@ static void emitConstant(Value value) {
emitBytes(OP_CONSTANT, makeConstant(value));
}
static void initCompiler(Compiler *compiler) {
compiler->localCount = 0;
compiler->scopeDepth = 0;
current = compiler;
}
static void endCompiler() {
emitReturn();
#ifdef DEBUG_PRINT_CODE
@ -398,6 +416,8 @@ static ParseRule *getRule(TokenType type) { return &rules[type]; }
bool compile(const char *source, Chunk *chunk) {
initScanner(source);
Compiler compiler;
initCompiler(&compiler);
compilingChunk = chunk;
parser.hadError = false;