151 lines
3.8 KiB
V
151 lines
3.8 KiB
V
// Copyright (c) 2019-2022 Alexander Medvednikov. All rights reserved.
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// Use of this source code is governed by an MIT license that can be found in the LICENSE file.
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module c
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import v.ast
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import v.util
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fn (mut g Gen) string_literal(node ast.StringLiteral) {
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escaped_val := cescape_nonascii(util.smart_quote(node.val, node.is_raw))
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if node.language == .c {
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g.write('"$escaped_val"')
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} else {
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g.write('_SLIT("$escaped_val")')
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}
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}
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// optimize string interpolation in string builders:
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// `sb.writeln('a=$a')` =>
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// `sb.writeln('a='); sb.writeln(a.str())`
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fn (mut g Gen) string_inter_literal_sb_optimized(call_expr ast.CallExpr) {
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node := call_expr.args[0].expr as ast.StringInterLiteral
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// sb_name := g.cur_call_expr.left
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// g.go_before_stmt(0)
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g.writeln('// sb inter opt')
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is_nl := call_expr.name == 'writeln'
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// println('optimize sb $call_expr.name')
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for i, val in node.vals {
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escaped_val := cescape_nonascii(util.smart_quote(val, false))
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// if val == '' {
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// break
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// continue
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// }
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g.write('strings__Builder_write_string(&')
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g.expr(call_expr.left)
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g.write(', _SLIT("')
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g.write(escaped_val)
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g.writeln('"));')
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//
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if i >= node.exprs.len {
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break
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}
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// if node.expr_types.len <= i || node.exprs.len <= i {
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// continue
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// }
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if is_nl && i == node.exprs.len - 1 {
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g.write('strings__Builder_writeln(&')
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} else {
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g.write('strings__Builder_write_string(&')
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}
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g.expr(call_expr.left)
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g.write(', ')
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typ := node.expr_types[i]
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g.write(g.typ(typ))
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g.write('_str(')
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sym := g.table.sym(typ)
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if sym.kind != .function {
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g.expr(node.exprs[i])
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}
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g.writeln('));')
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}
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g.writeln('')
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// println(node.vals)
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return
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}
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fn (mut g Gen) gen_expr_to_string(expr ast.Expr, etype ast.Type) {
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is_shared := etype.has_flag(.shared_f)
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mut typ := etype
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if is_shared {
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typ = typ.clear_flag(.shared_f).set_nr_muls(0)
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}
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mut sym := g.table.sym(typ)
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// when type is alias and doesn't has `str()`, print the aliased value
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if mut sym.info is ast.Alias && !sym.has_method('str') {
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parent_sym := g.table.sym(sym.info.parent_type)
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if parent_sym.has_method('str') {
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typ = sym.info.parent_type
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sym = parent_sym
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}
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}
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sym_has_str_method, str_method_expects_ptr, _ := sym.str_method_info()
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if typ.has_flag(.variadic) {
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str_fn_name := g.get_str_fn(typ)
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g.write('${str_fn_name}(')
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g.expr(expr)
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g.write(')')
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} else if typ == ast.string_type {
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if etype.is_ptr() {
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g.write('*')
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}
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g.expr(expr)
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} else if typ == ast.bool_type {
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g.expr(expr)
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g.write(' ? _SLIT("true") : _SLIT("false")')
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} else if sym.kind == .none_ {
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g.write('_SLIT("<none>")')
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} else if sym.kind == .enum_ {
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if expr !is ast.EnumVal {
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str_fn_name := g.get_str_fn(typ)
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g.write('${str_fn_name}(')
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g.enum_expr(expr)
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g.write(')')
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} else {
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g.write('_SLIT("')
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g.enum_expr(expr)
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g.write('")')
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}
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} else if sym_has_str_method
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|| sym.kind in [.array, .array_fixed, .map, .struct_, .multi_return, .sum_type, .interface_] {
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is_ptr := typ.is_ptr()
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is_var_mut := expr.is_auto_deref_var()
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str_fn_name := g.get_str_fn(typ)
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if is_ptr && !is_var_mut {
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g.write('str_intp(1, _MOV((StrIntpData[]){{_SLIT("&"), $si_s_code ,{.d_s=')
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}
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g.write('${str_fn_name}(')
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if str_method_expects_ptr && !is_ptr {
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g.write('&')
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} else if (!str_method_expects_ptr && is_ptr && !is_shared) || is_var_mut {
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g.write('*')
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}
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if expr is ast.ArrayInit {
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if expr.is_fixed {
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s := g.typ(expr.typ)
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if !expr.has_it {
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g.write('($s)')
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}
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}
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}
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g.expr_with_cast(expr, typ, typ)
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if is_shared {
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g.write('->val')
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}
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g.write(')')
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if is_ptr && !is_var_mut {
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g.write('}}}))')
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// g.write(')')
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}
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} else {
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str_fn_name := g.get_str_fn(typ)
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g.write('${str_fn_name}(')
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if expr.is_auto_deref_var() {
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g.write('*')
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}
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if sym.kind != .function {
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g.expr_with_cast(expr, typ, typ)
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}
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g.write(')')
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}
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}
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