cgen: cleanup generating helper comments with -skip-unused
Delyan Angelov
parent
ebb5305b27
commit
0b60510c9c
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@ -1045,60 +1045,7 @@ fn (mut g Gen) stmt(node ast.Stmt) {
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}
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}
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ast.FnDecl {
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g.gen_attrs(node.attrs)
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// g.tmp_count = 0 TODO
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mut skip := false
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pos := g.out.buf.len
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should_bundle_module := util.should_bundle_module(node.mod)
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if g.pref.build_mode == .build_module {
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// if node.name.contains('parse_text') {
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// println('!!! $node.name mod=$node.mod, built=$g.module_built')
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// }
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// TODO true for not just "builtin"
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// TODO: clean this up
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mod := if g.is_builtin_mod { 'builtin' } else { node.name.all_before_last('.') }
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if (mod != g.module_built && node.mod != g.module_built.after('/'))
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|| should_bundle_module {
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// Skip functions that don't have to be generated for this module.
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// println('skip bm $node.name mod=$node.mod module_built=$g.module_built')
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skip = true
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}
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if g.is_builtin_mod && g.module_built == 'builtin' && node.mod == 'builtin' {
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skip = false
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}
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if !skip && g.pref.is_verbose {
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println('build module `$g.module_built` fn `$node.name`')
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}
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}
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if g.pref.use_cache {
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// We are using prebuilt modules, we do not need to generate
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// their functions in main.c.
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if node.mod != 'main' && node.mod != 'help' && !should_bundle_module
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&& !g.pref.is_test && node.generic_params.len == 0 {
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skip = true
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}
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}
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keep_fn_decl := g.fn_decl
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g.fn_decl = &node
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if node.name == 'main.main' {
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g.has_main = true
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}
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if node.name == 'backtrace' || node.name == 'backtrace_symbols'
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|| node.name == 'backtrace_symbols_fd' {
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g.write('\n#ifndef __cplusplus\n')
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}
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g.gen_fn_decl(node, skip)
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if node.name == 'backtrace' || node.name == 'backtrace_symbols'
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|| node.name == 'backtrace_symbols_fd' {
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g.write('\n#endif\n')
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}
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g.fn_decl = keep_fn_decl
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if skip {
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g.out.go_back_to(pos)
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}
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if node.language != .c {
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g.writeln('')
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}
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g.process_fn_decl(node)
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}
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ast.ForCStmt {
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prev_branch_parent_pos := g.branch_parent_pos
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@ -7,6 +7,82 @@ import v.ast
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import v.table
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import v.util
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fn (mut g Gen) is_used_by_main(node ast.FnDecl) bool {
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mut is_used_by_main := true
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if g.pref.skip_unused {
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fkey := if node.is_method { '${int(node.receiver.typ)}.$node.name' } else { node.name }
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is_used_by_main = g.table.used_fns[fkey]
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$if trace_skip_unused_fns ? {
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println('> is_used_by_main: $is_used_by_main | node.name: $node.name | fkey: $fkey | node.is_method: $node.is_method')
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}
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if !is_used_by_main {
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$if trace_skip_unused_fns_in_c_code ? {
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g.writeln('// fn $node.name UNUSED')
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}
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}
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}
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return is_used_by_main
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}
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fn (mut g Gen) process_fn_decl(node ast.FnDecl) {
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if !g.is_used_by_main(node) {
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return
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}
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g.gen_attrs(node.attrs)
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// g.tmp_count = 0 TODO
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mut skip := false
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pos := g.out.buf.len
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should_bundle_module := util.should_bundle_module(node.mod)
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if g.pref.build_mode == .build_module {
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// if node.name.contains('parse_text') {
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// println('!!! $node.name mod=$node.mod, built=$g.module_built')
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// }
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// TODO true for not just "builtin"
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// TODO: clean this up
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mod := if g.is_builtin_mod { 'builtin' } else { node.name.all_before_last('.') }
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if (mod != g.module_built && node.mod != g.module_built.after('/')) || should_bundle_module {
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// Skip functions that don't have to be generated for this module.
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// println('skip bm $node.name mod=$node.mod module_built=$g.module_built')
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skip = true
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}
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if g.is_builtin_mod && g.module_built == 'builtin' && node.mod == 'builtin' {
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skip = false
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}
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if !skip && g.pref.is_verbose {
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println('build module `$g.module_built` fn `$node.name`')
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}
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}
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if g.pref.use_cache {
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// We are using prebuilt modules, we do not need to generate
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// their functions in main.c.
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if node.mod != 'main' && node.mod != 'help' && !should_bundle_module && !g.pref.is_test
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&& node.generic_params.len == 0 {
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skip = true
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}
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}
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keep_fn_decl := g.fn_decl
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g.fn_decl = &node
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if node.name == 'main.main' {
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g.has_main = true
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}
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if node.name == 'backtrace' || node.name == 'backtrace_symbols'
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|| node.name == 'backtrace_symbols_fd' {
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g.write('\n#ifndef __cplusplus\n')
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}
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g.gen_fn_decl(node, skip)
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if node.name == 'backtrace' || node.name == 'backtrace_symbols'
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|| node.name == 'backtrace_symbols_fd' {
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g.write('\n#endif\n')
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}
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g.fn_decl = keep_fn_decl
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if skip {
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g.out.go_back_to(pos)
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}
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if node.language != .c {
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g.writeln('')
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}
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}
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fn (mut g Gen) gen_fn_decl(node ast.FnDecl, skip bool) {
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// TODO For some reason, build fails with autofree with this line
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// as it's only informative, comment it for now
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@ -27,17 +103,6 @@ fn (mut g Gen) gen_fn_decl(node ast.FnDecl, skip bool) {
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}
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}
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*/
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if g.pref.skip_unused {
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fkey := if node.is_method { '${int(node.receiver.typ)}.$node.name' } else { node.name }
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is_used_by_main := g.table.used_fns[fkey]
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$if trace_skip_unused_fns ? {
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println('> is_used_by_main: $is_used_by_main | node.name: $node.name | fkey: $fkey | node.is_method: $node.is_method')
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}
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if !is_used_by_main {
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g.writeln('// fn $node.name UNUSED')
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return
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}
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}
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g.returned_var_name = ''
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//
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