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

Chapter 22.2

Browse source
This commit is contained in:
Tom Willemse 2021-10-21 20:18:48 -07:00
parent df1985ae84
commit 42a7e26292
1 changed files with 16 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

16
clox/src/compiler.c
View file

@ -149,6 +149,10 @@ static void endCompiler() {
#endif #endif
} }
static void beginScope() { current->scopeDepth++; }
static void endScope() { current->scopeDepth--; }
static void expression(); static void expression();
static void statement(); static void statement();
static void declaration(); static void declaration();
@ -217,6 +221,14 @@ static void literal(bool canAssign) {
static void expression() { parsePrecedence(PREC_ASSIGNMENT); } static void expression() { parsePrecedence(PREC_ASSIGNMENT); }
static void block() {
while (!check(TOKEN_RIGHT_BRACE) && !check(TOKEN_EOF)) {
declaration();
}
consume(TOKEN_RIGHT_BRACE, "Expect '}' after block.");
}
static void varDeclaration() { static void varDeclaration() {
uint8_t global = parseVariable("Expect variable name."); uint8_t global = parseVariable("Expect variable name.");
@ -280,6 +292,10 @@ static void declaration() {
static void statement() { static void statement() {
if (match(TOKEN_PRINT)) { if (match(TOKEN_PRINT)) {
printStatement(); printStatement();
} else if (match(TOKEN_LEFT_BRACE)) {
beginScope();
block();
endScope();
} else { } else {
expressionStatement(); expressionStatement();
} }