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feat: while/loop, array indexing (hIndexPtr/hAssign/hLoad), hAssign for assignment expressions

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This commit is contained in:
dimgigov
2026-05-31 21:10:17 +03:00
parent 0ae4424bbc
commit 646c1cad28
4 changed files with 168 additions and 0 deletions
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_selfhost/src/c_backend.bux
+61
View File
@@ -223,6 +223,67 @@ func CBE_EmitExpr(cbe: *CEmitter, node: *HirNode) {
return; return;
} }
// While
if kind == hWhile {
StringBuilder_Append(&cbe.sb, "while (");
CBE_EmitExpr(cbe, node.child1);
StringBuilder_Append(&cbe.sb, ") {\n");
if node.child2 != null as *HirNode {
cbe.indent = cbe.indent + 1;
CBE_EmitExpr(cbe, node.child2);
cbe.indent = cbe.indent - 1;
}
var sp: int = 0;
while sp < cbe.indent {
StringBuilder_Append(&cbe.sb, " ");
sp = sp + 1;
}
StringBuilder_Append(&cbe.sb, "}");
return;
}
// Loop (infinite)
if kind == hLoop {
StringBuilder_Append(&cbe.sb, "while (1) {\n");
if node.child1 != null as *HirNode {
cbe.indent = cbe.indent + 1;
CBE_EmitExpr(cbe, node.child1);
cbe.indent = cbe.indent - 1;
}
var sp: int = 0;
while sp < cbe.indent {
StringBuilder_Append(&cbe.sb, " ");
sp = sp + 1;
}
StringBuilder_Append(&cbe.sb, "}");
return;
}
// Index: arr[idx] — emit as arr[idx]
if kind == hIndexPtr {
CBE_EmitExpr(cbe, node.child1);
StringBuilder_Append(&cbe.sb, "[");
CBE_EmitExpr(cbe, node.child2);
StringBuilder_Append(&cbe.sb, "]");
return;
}
// Load: *ptr — emit as *ptr (dereference)
if kind == hLoad {
StringBuilder_Append(&cbe.sb, "(*");
CBE_EmitExpr(cbe, node.child1);
StringBuilder_Append(&cbe.sb, ")");
return;
}
// Assign: target = value
if kind == hAssign {
CBE_EmitExpr(cbe, node.child1);
StringBuilder_Append(&cbe.sb, " = ");
CBE_EmitExpr(cbe, node.child2);
return;
}
// Cast // Cast
if kind == hCast { if kind == hCast {
StringBuilder_Append(&cbe.sb, "(("); StringBuilder_Append(&cbe.sb, "((");
_selfhost/src/hir_lower.bux
+23
View File
@@ -66,6 +66,13 @@ func Lcx_LowerExpr(ctx: *LowerCtx, expr: *Expr) -> *HirNode {
// Binary // Binary
if kind == ekBinary { if kind == ekBinary {
// Assignment operator → use hAssign
if expr.intValue == tkAssign {
n.kind = hAssign;
n.child1 = Lcx_LowerExpr(ctx, expr.child1);
n.child2 = Lcx_LowerExpr(ctx, expr.child2);
return n;
}
n.kind = hBinary; n.kind = hBinary;
n.intValue = expr.intValue; // operator n.intValue = expr.intValue; // operator
n.child1 = Lcx_LowerExpr(ctx, expr.child1); n.child1 = Lcx_LowerExpr(ctx, expr.child1);
@@ -106,6 +113,22 @@ func Lcx_LowerExpr(ctx: *LowerCtx, expr: *Expr) -> *HirNode {
return n; return n;
} }
// Index: arr[idx]
if kind == ekIndex {
n.kind = hIndexPtr;
n.child1 = Lcx_LowerExpr(ctx, expr.child1);
n.child2 = Lcx_LowerExpr(ctx, expr.child2);
return n;
}
// Assign: target = value
if kind == ekAssign {
n.kind = hAssign;
n.child1 = Lcx_LowerExpr(ctx, expr.child1); // target
n.child2 = Lcx_LowerExpr(ctx, expr.child2); // value
return n;
}
// Cast // Cast
if kind == ekCast { if kind == ekCast {
n.kind = hCast; n.kind = hCast;
src_bux/c_backend.bux
+61
View File
@@ -223,6 +223,67 @@ func CBE_EmitExpr(cbe: *CEmitter, node: *HirNode) {
return; return;
} }
// While
if kind == hWhile {
StringBuilder_Append(&cbe.sb, "while (");
CBE_EmitExpr(cbe, node.child1);
StringBuilder_Append(&cbe.sb, ") {\n");
if node.child2 != null as *HirNode {
cbe.indent = cbe.indent + 1;
CBE_EmitExpr(cbe, node.child2);
cbe.indent = cbe.indent - 1;
}
var sp: int = 0;
while sp < cbe.indent {
StringBuilder_Append(&cbe.sb, " ");
sp = sp + 1;
}
StringBuilder_Append(&cbe.sb, "}");
return;
}
// Loop (infinite)
if kind == hLoop {
StringBuilder_Append(&cbe.sb, "while (1) {\n");
if node.child1 != null as *HirNode {
cbe.indent = cbe.indent + 1;
CBE_EmitExpr(cbe, node.child1);
cbe.indent = cbe.indent - 1;
}
var sp: int = 0;
while sp < cbe.indent {
StringBuilder_Append(&cbe.sb, " ");
sp = sp + 1;
}
StringBuilder_Append(&cbe.sb, "}");
return;
}
// Index: arr[idx] — emit as arr[idx]
if kind == hIndexPtr {
CBE_EmitExpr(cbe, node.child1);
StringBuilder_Append(&cbe.sb, "[");
CBE_EmitExpr(cbe, node.child2);
StringBuilder_Append(&cbe.sb, "]");
return;
}
// Load: *ptr — emit as *ptr (dereference)
if kind == hLoad {
StringBuilder_Append(&cbe.sb, "(*");
CBE_EmitExpr(cbe, node.child1);
StringBuilder_Append(&cbe.sb, ")");
return;
}
// Assign: target = value
if kind == hAssign {
CBE_EmitExpr(cbe, node.child1);
StringBuilder_Append(&cbe.sb, " = ");
CBE_EmitExpr(cbe, node.child2);
return;
}
// Cast // Cast
if kind == hCast { if kind == hCast {
StringBuilder_Append(&cbe.sb, "(("); StringBuilder_Append(&cbe.sb, "((");
src_bux/hir_lower.bux
+23
View File
@@ -66,6 +66,13 @@ func Lcx_LowerExpr(ctx: *LowerCtx, expr: *Expr) -> *HirNode {
// Binary // Binary
if kind == ekBinary { if kind == ekBinary {
// Assignment operator → use hAssign
if expr.intValue == tkAssign {
n.kind = hAssign;
n.child1 = Lcx_LowerExpr(ctx, expr.child1);
n.child2 = Lcx_LowerExpr(ctx, expr.child2);
return n;
}
n.kind = hBinary; n.kind = hBinary;
n.intValue = expr.intValue; // operator n.intValue = expr.intValue; // operator
n.child1 = Lcx_LowerExpr(ctx, expr.child1); n.child1 = Lcx_LowerExpr(ctx, expr.child1);
@@ -106,6 +113,22 @@ func Lcx_LowerExpr(ctx: *LowerCtx, expr: *Expr) -> *HirNode {
return n; return n;
} }
// Index: arr[idx]
if kind == ekIndex {
n.kind = hIndexPtr;
n.child1 = Lcx_LowerExpr(ctx, expr.child1);
n.child2 = Lcx_LowerExpr(ctx, expr.child2);
return n;
}
// Assign: target = value
if kind == ekAssign {
n.kind = hAssign;
n.child1 = Lcx_LowerExpr(ctx, expr.child1); // target
n.child2 = Lcx_LowerExpr(ctx, expr.child2); // value
return n;
}
// Cast // Cast
if kind == ekCast { if kind == ekCast {
n.kind = hCast; n.kind = hCast;