From 47d43f5a583dc2d474e553afe0cb682d878231b1 Mon Sep 17 00:00:00 2001
From: nsfisis <nsfisis@gmail.com>
Date: Thu, 11 Dec 2025 03:06:22 +0900
Subject: Revert "feat: minimal wasm backend"

This reverts commit f64ab73b841377f044e727ee1d9e0bcf55c6b626.
---
 src/codegen_wasm.c | 119 -----------------------------------------------------
 1 file changed, 119 deletions(-)
 delete mode 100644 src/codegen_wasm.c

(limited to 'src/codegen_wasm.c')

diff --git a/src/codegen_wasm.c b/src/codegen_wasm.c
deleted file mode 100644
index 1072b67..0000000
--- a/src/codegen_wasm.c
+++ /dev/null
@@ -1,119 +0,0 @@
-#include <stdlib.h>
-#include <string.h>
-#include "codegen.h"
-#include "common.h"
-#include "preprocess.h"
-
-typedef enum {
-    GenMode_lval,
-    GenMode_rval,
-} GenMode;
-
-typedef struct {
-    FILE* out;
-    int next_label;
-    int* loop_labels;
-    AstNode* current_func;
-    int switch_label;
-} CodeGen;
-
-static CodeGen* codegen_new(FILE* out) {
-    CodeGen* g = calloc(1, sizeof(CodeGen));
-    g->out = out;
-    g->next_label = 1;
-    g->loop_labels = calloc(1024, sizeof(int));
-    g->switch_label = -1;
-    return g;
-}
-
-static void codegen_expr(CodeGen* g, AstNode* ast, GenMode gen_mode);
-static void codegen_stmt(CodeGen* g, AstNode* ast);
-
-static void codegen_func_prologue(CodeGen* g, AstNode* ast) {
-    for (int i = 0; i < ast->node_params->node_len; ++i) {
-        fprintf(g->out, " (param $l_%s i32)", ast->node_params->node_items[i].name);
-    }
-    fprintf(g->out, " (result i32)\n");
-}
-
-static void codegen_func_epilogue(CodeGen* g, AstNode* ast) {
-}
-
-static void codegen_binary_expr(CodeGen* g, AstNode* ast, GenMode gen_mode) {
-    codegen_expr(g, ast->node_lhs, gen_mode);
-    codegen_expr(g, ast->node_rhs, gen_mode);
-    if (ast->node_op == TokenKind_plus) {
-        fprintf(g->out, "i32.add\n");
-    } else {
-        unreachable();
-    }
-}
-
-static void codegen_lvar(CodeGen* g, AstNode* ast, GenMode gen_mode) {
-    fprintf(g->out, "  local.get $l_%s\n", ast->name);
-}
-
-static void codegen_expr(CodeGen* g, AstNode* ast, GenMode gen_mode) {
-    if (ast->kind == AstNodeKind_binary_expr) {
-        codegen_binary_expr(g, ast, gen_mode);
-    } else if (ast->kind == AstNodeKind_lvar) {
-        codegen_lvar(g, ast, gen_mode);
-    } else {
-        unreachable();
-    }
-}
-
-static void codegen_return_stmt(CodeGen* g, AstNode* ast) {
-    if (ast->node_expr) {
-        codegen_expr(g, ast->node_expr, GenMode_rval);
-    }
-    codegen_func_epilogue(g, ast);
-}
-
-static void codegen_nop(CodeGen* g, AstNode* ast) {
-}
-
-static void codegen_block_stmt(CodeGen* g, AstNode* ast) {
-    for (int i = 0; i < ast->node_len; ++i) {
-        AstNode* stmt = ast->node_items + i;
-        codegen_stmt(g, stmt);
-    }
-}
-
-static void codegen_stmt(CodeGen* g, AstNode* ast) {
-    if (ast->kind == AstNodeKind_list) {
-        codegen_block_stmt(g, ast);
-    } else if (ast->kind == AstNodeKind_return_stmt) {
-        codegen_return_stmt(g, ast);
-    } else if (ast->kind == AstNodeKind_nop) {
-        codegen_nop(g, ast);
-    } else {
-        unreachable();
-    }
-}
-
-static void codegen_func(CodeGen* g, AstNode* ast) {
-    g->current_func = ast;
-
-    fprintf(g->out, "(func (export \"%s\") \n", ast->name);
-
-    codegen_func_prologue(g, ast);
-    codegen_stmt(g, ast->node_body);
-    codegen_func_epilogue(g, ast);
-
-    fprintf(g->out, ")\n");
-    g->current_func = NULL;
-}
-
-void codegen_wasm(Program* prog, FILE* out) {
-    CodeGen* g = codegen_new(out);
-
-    fprintf(g->out, "(module\n");
-
-    for (int i = 0; i < prog->funcs->node_len; ++i) {
-        AstNode* func = prog->funcs->node_items + i;
-        codegen_func(g, func);
-    }
-
-    fprintf(g->out, ")\n");
-}
-- 
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